Bug Summary

File:tools/clang/lib/Driver/ToolChains/Clang.cpp
Warning:line 3487, column 5
Value stored to 'IsWindowsCygnus' is never read

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Clang.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-9/lib/clang/9.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/include -I /build/llvm-toolchain-snapshot-9~svn362543/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/9.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-9/lib/clang/9.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/Driver -fdebug-prefix-map=/build/llvm-toolchain-snapshot-9~svn362543=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2019-06-05-060531-1271-1 -x c++ /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp -faddrsig
1//===-- Clang.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "Clang.h"
10#include "Arch/AArch64.h"
11#include "Arch/ARM.h"
12#include "Arch/Mips.h"
13#include "Arch/PPC.h"
14#include "Arch/RISCV.h"
15#include "Arch/Sparc.h"
16#include "Arch/SystemZ.h"
17#include "Arch/X86.h"
18#include "AMDGPU.h"
19#include "CommonArgs.h"
20#include "Hexagon.h"
21#include "MSP430.h"
22#include "InputInfo.h"
23#include "PS4CPU.h"
24#include "clang/Basic/CharInfo.h"
25#include "clang/Basic/LangOptions.h"
26#include "clang/Basic/ObjCRuntime.h"
27#include "clang/Basic/Version.h"
28#include "clang/Driver/Distro.h"
29#include "clang/Driver/DriverDiagnostic.h"
30#include "clang/Driver/Options.h"
31#include "clang/Driver/SanitizerArgs.h"
32#include "clang/Driver/XRayArgs.h"
33#include "llvm/ADT/StringExtras.h"
34#include "llvm/Config/llvm-config.h"
35#include "llvm/Option/ArgList.h"
36#include "llvm/Support/CodeGen.h"
37#include "llvm/Support/Compression.h"
38#include "llvm/Support/FileSystem.h"
39#include "llvm/Support/Path.h"
40#include "llvm/Support/Process.h"
41#include "llvm/Support/TargetParser.h"
42#include "llvm/Support/YAMLParser.h"
43
44#ifdef LLVM_ON_UNIX1
45#include <unistd.h> // For getuid().
46#endif
47
48using namespace clang::driver;
49using namespace clang::driver::tools;
50using namespace clang;
51using namespace llvm::opt;
52
53static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
54 if (Arg *A =
55 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
56 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
57 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
58 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
59 << A->getBaseArg().getAsString(Args)
60 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
61 }
62 }
63}
64
65static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
66 // In gcc, only ARM checks this, but it seems reasonable to check universally.
67 if (Args.hasArg(options::OPT_static))
68 if (const Arg *A =
69 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
70 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
71 << "-static";
72}
73
74// Add backslashes to escape spaces and other backslashes.
75// This is used for the space-separated argument list specified with
76// the -dwarf-debug-flags option.
77static void EscapeSpacesAndBackslashes(const char *Arg,
78 SmallVectorImpl<char> &Res) {
79 for (; *Arg; ++Arg) {
80 switch (*Arg) {
81 default:
82 break;
83 case ' ':
84 case '\\':
85 Res.push_back('\\');
86 break;
87 }
88 Res.push_back(*Arg);
89 }
90}
91
92// Quote target names for inclusion in GNU Make dependency files.
93// Only the characters '$', '#', ' ', '\t' are quoted.
94static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
95 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
96 switch (Target[i]) {
97 case ' ':
98 case '\t':
99 // Escape the preceding backslashes
100 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
101 Res.push_back('\\');
102
103 // Escape the space/tab
104 Res.push_back('\\');
105 break;
106 case '$':
107 Res.push_back('$');
108 break;
109 case '#':
110 Res.push_back('\\');
111 break;
112 default:
113 break;
114 }
115
116 Res.push_back(Target[i]);
117 }
118}
119
120/// Apply \a Work on the current tool chain \a RegularToolChain and any other
121/// offloading tool chain that is associated with the current action \a JA.
122static void
123forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
124 const ToolChain &RegularToolChain,
125 llvm::function_ref<void(const ToolChain &)> Work) {
126 // Apply Work on the current/regular tool chain.
127 Work(RegularToolChain);
128
129 // Apply Work on all the offloading tool chains associated with the current
130 // action.
131 if (JA.isHostOffloading(Action::OFK_Cuda))
132 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
133 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
134 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
135 else if (JA.isHostOffloading(Action::OFK_HIP))
136 Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
137 else if (JA.isDeviceOffloading(Action::OFK_HIP))
138 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
139
140 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
141 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
142 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
143 Work(*II->second);
144 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
145 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
146
147 //
148 // TODO: Add support for other offloading programming models here.
149 //
150}
151
152/// This is a helper function for validating the optional refinement step
153/// parameter in reciprocal argument strings. Return false if there is an error
154/// parsing the refinement step. Otherwise, return true and set the Position
155/// of the refinement step in the input string.
156static bool getRefinementStep(StringRef In, const Driver &D,
157 const Arg &A, size_t &Position) {
158 const char RefinementStepToken = ':';
159 Position = In.find(RefinementStepToken);
160 if (Position != StringRef::npos) {
161 StringRef Option = A.getOption().getName();
162 StringRef RefStep = In.substr(Position + 1);
163 // Allow exactly one numeric character for the additional refinement
164 // step parameter. This is reasonable for all currently-supported
165 // operations and architectures because we would expect that a larger value
166 // of refinement steps would cause the estimate "optimization" to
167 // under-perform the native operation. Also, if the estimate does not
168 // converge quickly, it probably will not ever converge, so further
169 // refinement steps will not produce a better answer.
170 if (RefStep.size() != 1) {
171 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
172 return false;
173 }
174 char RefStepChar = RefStep[0];
175 if (RefStepChar < '0' || RefStepChar > '9') {
176 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
177 return false;
178 }
179 }
180 return true;
181}
182
183/// The -mrecip flag requires processing of many optional parameters.
184static void ParseMRecip(const Driver &D, const ArgList &Args,
185 ArgStringList &OutStrings) {
186 StringRef DisabledPrefixIn = "!";
187 StringRef DisabledPrefixOut = "!";
188 StringRef EnabledPrefixOut = "";
189 StringRef Out = "-mrecip=";
190
191 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
192 if (!A)
193 return;
194
195 unsigned NumOptions = A->getNumValues();
196 if (NumOptions == 0) {
197 // No option is the same as "all".
198 OutStrings.push_back(Args.MakeArgString(Out + "all"));
199 return;
200 }
201
202 // Pass through "all", "none", or "default" with an optional refinement step.
203 if (NumOptions == 1) {
204 StringRef Val = A->getValue(0);
205 size_t RefStepLoc;
206 if (!getRefinementStep(Val, D, *A, RefStepLoc))
207 return;
208 StringRef ValBase = Val.slice(0, RefStepLoc);
209 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
210 OutStrings.push_back(Args.MakeArgString(Out + Val));
211 return;
212 }
213 }
214
215 // Each reciprocal type may be enabled or disabled individually.
216 // Check each input value for validity, concatenate them all back together,
217 // and pass through.
218
219 llvm::StringMap<bool> OptionStrings;
220 OptionStrings.insert(std::make_pair("divd", false));
221 OptionStrings.insert(std::make_pair("divf", false));
222 OptionStrings.insert(std::make_pair("vec-divd", false));
223 OptionStrings.insert(std::make_pair("vec-divf", false));
224 OptionStrings.insert(std::make_pair("sqrtd", false));
225 OptionStrings.insert(std::make_pair("sqrtf", false));
226 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
227 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
228
229 for (unsigned i = 0; i != NumOptions; ++i) {
230 StringRef Val = A->getValue(i);
231
232 bool IsDisabled = Val.startswith(DisabledPrefixIn);
233 // Ignore the disablement token for string matching.
234 if (IsDisabled)
235 Val = Val.substr(1);
236
237 size_t RefStep;
238 if (!getRefinementStep(Val, D, *A, RefStep))
239 return;
240
241 StringRef ValBase = Val.slice(0, RefStep);
242 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
243 if (OptionIter == OptionStrings.end()) {
244 // Try again specifying float suffix.
245 OptionIter = OptionStrings.find(ValBase.str() + 'f');
246 if (OptionIter == OptionStrings.end()) {
247 // The input name did not match any known option string.
248 D.Diag(diag::err_drv_unknown_argument) << Val;
249 return;
250 }
251 // The option was specified without a float or double suffix.
252 // Make sure that the double entry was not already specified.
253 // The float entry will be checked below.
254 if (OptionStrings[ValBase.str() + 'd']) {
255 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
256 return;
257 }
258 }
259
260 if (OptionIter->second == true) {
261 // Duplicate option specified.
262 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
263 return;
264 }
265
266 // Mark the matched option as found. Do not allow duplicate specifiers.
267 OptionIter->second = true;
268
269 // If the precision was not specified, also mark the double entry as found.
270 if (ValBase.back() != 'f' && ValBase.back() != 'd')
271 OptionStrings[ValBase.str() + 'd'] = true;
272
273 // Build the output string.
274 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
275 Out = Args.MakeArgString(Out + Prefix + Val);
276 if (i != NumOptions - 1)
277 Out = Args.MakeArgString(Out + ",");
278 }
279
280 OutStrings.push_back(Args.MakeArgString(Out));
281}
282
283/// The -mprefer-vector-width option accepts either a positive integer
284/// or the string "none".
285static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
286 ArgStringList &CmdArgs) {
287 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
288 if (!A)
289 return;
290
291 StringRef Value = A->getValue();
292 if (Value == "none") {
293 CmdArgs.push_back("-mprefer-vector-width=none");
294 } else {
295 unsigned Width;
296 if (Value.getAsInteger(10, Width)) {
297 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
298 return;
299 }
300 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
301 }
302}
303
304static void getWebAssemblyTargetFeatures(const ArgList &Args,
305 std::vector<StringRef> &Features) {
306 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
307}
308
309static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
310 const ArgList &Args, ArgStringList &CmdArgs,
311 bool ForAS) {
312 const Driver &D = TC.getDriver();
313 std::vector<StringRef> Features;
314 switch (Triple.getArch()) {
315 default:
316 break;
317 case llvm::Triple::mips:
318 case llvm::Triple::mipsel:
319 case llvm::Triple::mips64:
320 case llvm::Triple::mips64el:
321 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
322 break;
323
324 case llvm::Triple::arm:
325 case llvm::Triple::armeb:
326 case llvm::Triple::thumb:
327 case llvm::Triple::thumbeb:
328 arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
329 break;
330
331 case llvm::Triple::ppc:
332 case llvm::Triple::ppc64:
333 case llvm::Triple::ppc64le:
334 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
335 break;
336 case llvm::Triple::riscv32:
337 case llvm::Triple::riscv64:
338 riscv::getRISCVTargetFeatures(D, Args, Features);
339 break;
340 case llvm::Triple::systemz:
341 systemz::getSystemZTargetFeatures(Args, Features);
342 break;
343 case llvm::Triple::aarch64:
344 case llvm::Triple::aarch64_be:
345 aarch64::getAArch64TargetFeatures(D, Triple, Args, Features);
346 break;
347 case llvm::Triple::x86:
348 case llvm::Triple::x86_64:
349 x86::getX86TargetFeatures(D, Triple, Args, Features);
350 break;
351 case llvm::Triple::hexagon:
352 hexagon::getHexagonTargetFeatures(D, Args, Features);
353 break;
354 case llvm::Triple::wasm32:
355 case llvm::Triple::wasm64:
356 getWebAssemblyTargetFeatures(Args, Features);
357 break;
358 case llvm::Triple::sparc:
359 case llvm::Triple::sparcel:
360 case llvm::Triple::sparcv9:
361 sparc::getSparcTargetFeatures(D, Args, Features);
362 break;
363 case llvm::Triple::r600:
364 case llvm::Triple::amdgcn:
365 amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
366 break;
367 case llvm::Triple::msp430:
368 msp430::getMSP430TargetFeatures(D, Args, Features);
369 }
370
371 // Find the last of each feature.
372 llvm::StringMap<unsigned> LastOpt;
373 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
374 StringRef Name = Features[I];
375 assert(Name[0] == '-' || Name[0] == '+')((Name[0] == '-' || Name[0] == '+') ? static_cast<void>
(0) : __assert_fail ("Name[0] == '-' || Name[0] == '+'", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 375, __PRETTY_FUNCTION__))
;
376 LastOpt[Name.drop_front(1)] = I;
377 }
378
379 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
380 // If this feature was overridden, ignore it.
381 StringRef Name = Features[I];
382 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
383 assert(LastI != LastOpt.end())((LastI != LastOpt.end()) ? static_cast<void> (0) : __assert_fail
("LastI != LastOpt.end()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 383, __PRETTY_FUNCTION__))
;
384 unsigned Last = LastI->second;
385 if (Last != I)
386 continue;
387
388 CmdArgs.push_back("-target-feature");
389 CmdArgs.push_back(Name.data());
390 }
391}
392
393static bool
394shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
395 const llvm::Triple &Triple) {
396 // We use the zero-cost exception tables for Objective-C if the non-fragile
397 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
398 // later.
399 if (runtime.isNonFragile())
400 return true;
401
402 if (!Triple.isMacOSX())
403 return false;
404
405 return (!Triple.isMacOSXVersionLT(10, 5) &&
406 (Triple.getArch() == llvm::Triple::x86_64 ||
407 Triple.getArch() == llvm::Triple::arm));
408}
409
410/// Adds exception related arguments to the driver command arguments. There's a
411/// master flag, -fexceptions and also language specific flags to enable/disable
412/// C++ and Objective-C exceptions. This makes it possible to for example
413/// disable C++ exceptions but enable Objective-C exceptions.
414static void addExceptionArgs(const ArgList &Args, types::ID InputType,
415 const ToolChain &TC, bool KernelOrKext,
416 const ObjCRuntime &objcRuntime,
417 ArgStringList &CmdArgs) {
418 const llvm::Triple &Triple = TC.getTriple();
419
420 if (KernelOrKext) {
421 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
422 // arguments now to avoid warnings about unused arguments.
423 Args.ClaimAllArgs(options::OPT_fexceptions);
424 Args.ClaimAllArgs(options::OPT_fno_exceptions);
425 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
426 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
427 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
428 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
429 return;
430 }
431
432 // See if the user explicitly enabled exceptions.
433 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
434 false);
435
436 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
437 // is not necessarily sensible, but follows GCC.
438 if (types::isObjC(InputType) &&
439 Args.hasFlag(options::OPT_fobjc_exceptions,
440 options::OPT_fno_objc_exceptions, true)) {
441 CmdArgs.push_back("-fobjc-exceptions");
442
443 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
444 }
445
446 if (types::isCXX(InputType)) {
447 // Disable C++ EH by default on XCore and PS4.
448 bool CXXExceptionsEnabled =
449 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
450 Arg *ExceptionArg = Args.getLastArg(
451 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
452 options::OPT_fexceptions, options::OPT_fno_exceptions);
453 if (ExceptionArg)
454 CXXExceptionsEnabled =
455 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
456 ExceptionArg->getOption().matches(options::OPT_fexceptions);
457
458 if (CXXExceptionsEnabled) {
459 CmdArgs.push_back("-fcxx-exceptions");
460
461 EH = true;
462 }
463 }
464
465 if (EH)
466 CmdArgs.push_back("-fexceptions");
467}
468
469static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
470 bool Default = true;
471 if (TC.getTriple().isOSDarwin()) {
472 // The native darwin assembler doesn't support the linker_option directives,
473 // so we disable them if we think the .s file will be passed to it.
474 Default = TC.useIntegratedAs();
475 }
476 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
477 Default);
478}
479
480static bool ShouldDisableDwarfDirectory(const ArgList &Args,
481 const ToolChain &TC) {
482 bool UseDwarfDirectory =
483 Args.hasFlag(options::OPT_fdwarf_directory_asm,
484 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
485 return !UseDwarfDirectory;
486}
487
488// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
489// to the corresponding DebugInfoKind.
490static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
491 assert(A.getOption().matches(options::OPT_gN_Group) &&((A.getOption().matches(options::OPT_gN_Group) && "Not a -g option that specifies a debug-info level"
) ? static_cast<void> (0) : __assert_fail ("A.getOption().matches(options::OPT_gN_Group) && \"Not a -g option that specifies a debug-info level\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 492, __PRETTY_FUNCTION__))
492 "Not a -g option that specifies a debug-info level")((A.getOption().matches(options::OPT_gN_Group) && "Not a -g option that specifies a debug-info level"
) ? static_cast<void> (0) : __assert_fail ("A.getOption().matches(options::OPT_gN_Group) && \"Not a -g option that specifies a debug-info level\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 492, __PRETTY_FUNCTION__))
;
493 if (A.getOption().matches(options::OPT_g0) ||
494 A.getOption().matches(options::OPT_ggdb0))
495 return codegenoptions::NoDebugInfo;
496 if (A.getOption().matches(options::OPT_gline_tables_only) ||
497 A.getOption().matches(options::OPT_ggdb1))
498 return codegenoptions::DebugLineTablesOnly;
499 if (A.getOption().matches(options::OPT_gline_directives_only))
500 return codegenoptions::DebugDirectivesOnly;
501 return codegenoptions::LimitedDebugInfo;
502}
503
504static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
505 switch (Triple.getArch()){
506 default:
507 return false;
508 case llvm::Triple::arm:
509 case llvm::Triple::thumb:
510 // ARM Darwin targets require a frame pointer to be always present to aid
511 // offline debugging via backtraces.
512 return Triple.isOSDarwin();
513 }
514}
515
516static bool useFramePointerForTargetByDefault(const ArgList &Args,
517 const llvm::Triple &Triple) {
518 switch (Triple.getArch()) {
519 case llvm::Triple::xcore:
520 case llvm::Triple::wasm32:
521 case llvm::Triple::wasm64:
522 case llvm::Triple::msp430:
523 // XCore never wants frame pointers, regardless of OS.
524 // WebAssembly never wants frame pointers.
525 return false;
526 case llvm::Triple::riscv32:
527 case llvm::Triple::riscv64:
528 return !areOptimizationsEnabled(Args);
529 default:
530 break;
531 }
532
533 if (Triple.isOSNetBSD()) {
534 return !areOptimizationsEnabled(Args);
535 }
536
537 if (Triple.isOSOpenBSD()) {
538 switch (Triple.getArch()) {
539 case llvm::Triple::mips64:
540 case llvm::Triple::mips64el:
541 case llvm::Triple::ppc:
542 case llvm::Triple::x86:
543 case llvm::Triple::x86_64:
544 return !areOptimizationsEnabled(Args);
545 default:
546 return true;
547 }
548 }
549
550 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
551 Triple.isOSHurd() || Triple.isOSkFreeBSD()) {
552 switch (Triple.getArch()) {
553 // Don't use a frame pointer on linux if optimizing for certain targets.
554 case llvm::Triple::mips64:
555 case llvm::Triple::mips64el:
556 case llvm::Triple::mips:
557 case llvm::Triple::mipsel:
558 case llvm::Triple::ppc:
559 case llvm::Triple::ppc64:
560 case llvm::Triple::ppc64le:
561 case llvm::Triple::systemz:
562 case llvm::Triple::x86:
563 case llvm::Triple::x86_64:
564 return !areOptimizationsEnabled(Args);
565 default:
566 return true;
567 }
568 }
569
570 if (Triple.isOSWindows()) {
571 switch (Triple.getArch()) {
572 case llvm::Triple::x86:
573 return !areOptimizationsEnabled(Args);
574 case llvm::Triple::x86_64:
575 return Triple.isOSBinFormatMachO();
576 case llvm::Triple::arm:
577 case llvm::Triple::thumb:
578 // Windows on ARM builds with FPO disabled to aid fast stack walking
579 return true;
580 default:
581 // All other supported Windows ISAs use xdata unwind information, so frame
582 // pointers are not generally useful.
583 return false;
584 }
585 }
586
587 return true;
588}
589
590static bool shouldUseFramePointer(const ArgList &Args,
591 const llvm::Triple &Triple) {
592 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
593 options::OPT_fomit_frame_pointer))
594 return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
595 mustUseNonLeafFramePointerForTarget(Triple);
596
597 if (Args.hasArg(options::OPT_pg))
598 return true;
599
600 return useFramePointerForTargetByDefault(Args, Triple);
601}
602
603static bool shouldUseLeafFramePointer(const ArgList &Args,
604 const llvm::Triple &Triple) {
605 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
606 options::OPT_momit_leaf_frame_pointer))
607 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
608
609 if (Args.hasArg(options::OPT_pg))
610 return true;
611
612 if (Triple.isPS4CPU())
613 return false;
614
615 return useFramePointerForTargetByDefault(Args, Triple);
616}
617
618/// Add a CC1 option to specify the debug compilation directory.
619static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs,
620 const llvm::vfs::FileSystem &VFS) {
621 if (llvm::ErrorOr<std::string> CWD = VFS.getCurrentWorkingDirectory()) {
622 CmdArgs.push_back("-fdebug-compilation-dir");
623 CmdArgs.push_back(Args.MakeArgString(*CWD));
624 }
625}
626
627/// Add a CC1 and CC1AS option to specify the debug file path prefix map.
628static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
629 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
630 StringRef Map = A->getValue();
631 if (Map.find('=') == StringRef::npos)
632 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
633 else
634 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
635 A->claim();
636 }
637}
638
639/// Vectorize at all optimization levels greater than 1 except for -Oz.
640/// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
641static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
642 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
643 if (A->getOption().matches(options::OPT_O4) ||
644 A->getOption().matches(options::OPT_Ofast))
645 return true;
646
647 if (A->getOption().matches(options::OPT_O0))
648 return false;
649
650 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag")((A->getOption().matches(options::OPT_O) && "Must have a -O flag"
) ? static_cast<void> (0) : __assert_fail ("A->getOption().matches(options::OPT_O) && \"Must have a -O flag\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 650, __PRETTY_FUNCTION__))
;
651
652 // Vectorize -Os.
653 StringRef S(A->getValue());
654 if (S == "s")
655 return true;
656
657 // Don't vectorize -Oz, unless it's the slp vectorizer.
658 if (S == "z")
659 return isSlpVec;
660
661 unsigned OptLevel = 0;
662 if (S.getAsInteger(10, OptLevel))
663 return false;
664
665 return OptLevel > 1;
666 }
667
668 return false;
669}
670
671/// Add -x lang to \p CmdArgs for \p Input.
672static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
673 ArgStringList &CmdArgs) {
674 // When using -verify-pch, we don't want to provide the type
675 // 'precompiled-header' if it was inferred from the file extension
676 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
677 return;
678
679 CmdArgs.push_back("-x");
680 if (Args.hasArg(options::OPT_rewrite_objc))
681 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
682 else {
683 // Map the driver type to the frontend type. This is mostly an identity
684 // mapping, except that the distinction between module interface units
685 // and other source files does not exist at the frontend layer.
686 const char *ClangType;
687 switch (Input.getType()) {
688 case types::TY_CXXModule:
689 ClangType = "c++";
690 break;
691 case types::TY_PP_CXXModule:
692 ClangType = "c++-cpp-output";
693 break;
694 default:
695 ClangType = types::getTypeName(Input.getType());
696 break;
697 }
698 CmdArgs.push_back(ClangType);
699 }
700}
701
702static void appendUserToPath(SmallVectorImpl<char> &Result) {
703#ifdef LLVM_ON_UNIX1
704 const char *Username = getenv("LOGNAME");
705#else
706 const char *Username = getenv("USERNAME");
707#endif
708 if (Username) {
709 // Validate that LoginName can be used in a path, and get its length.
710 size_t Len = 0;
711 for (const char *P = Username; *P; ++P, ++Len) {
712 if (!clang::isAlphanumeric(*P) && *P != '_') {
713 Username = nullptr;
714 break;
715 }
716 }
717
718 if (Username && Len > 0) {
719 Result.append(Username, Username + Len);
720 return;
721 }
722 }
723
724// Fallback to user id.
725#ifdef LLVM_ON_UNIX1
726 std::string UID = llvm::utostr(getuid());
727#else
728 // FIXME: Windows seems to have an 'SID' that might work.
729 std::string UID = "9999";
730#endif
731 Result.append(UID.begin(), UID.end());
732}
733
734static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
735 const Driver &D, const InputInfo &Output,
736 const ArgList &Args,
737 ArgStringList &CmdArgs) {
738
739 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
740 options::OPT_fprofile_generate_EQ,
741 options::OPT_fno_profile_generate);
742 if (PGOGenerateArg &&
743 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
744 PGOGenerateArg = nullptr;
745
746 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
747 options::OPT_fcs_profile_generate_EQ,
748 options::OPT_fno_profile_generate);
749 if (CSPGOGenerateArg &&
750 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
751 CSPGOGenerateArg = nullptr;
752
753 auto *ProfileGenerateArg = Args.getLastArg(
754 options::OPT_fprofile_instr_generate,
755 options::OPT_fprofile_instr_generate_EQ,
756 options::OPT_fno_profile_instr_generate);
757 if (ProfileGenerateArg &&
758 ProfileGenerateArg->getOption().matches(
759 options::OPT_fno_profile_instr_generate))
760 ProfileGenerateArg = nullptr;
761
762 if (PGOGenerateArg && ProfileGenerateArg)
763 D.Diag(diag::err_drv_argument_not_allowed_with)
764 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
765
766 auto *ProfileUseArg = getLastProfileUseArg(Args);
767
768 if (PGOGenerateArg && ProfileUseArg)
769 D.Diag(diag::err_drv_argument_not_allowed_with)
770 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
771
772 if (ProfileGenerateArg && ProfileUseArg)
773 D.Diag(diag::err_drv_argument_not_allowed_with)
774 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
775
776 if (CSPGOGenerateArg && PGOGenerateArg)
777 D.Diag(diag::err_drv_argument_not_allowed_with)
778 << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
779
780 if (ProfileGenerateArg) {
781 if (ProfileGenerateArg->getOption().matches(
782 options::OPT_fprofile_instr_generate_EQ))
783 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
784 ProfileGenerateArg->getValue()));
785 // The default is to use Clang Instrumentation.
786 CmdArgs.push_back("-fprofile-instrument=clang");
787 if (TC.getTriple().isWindowsMSVCEnvironment()) {
788 // Add dependent lib for clang_rt.profile
789 CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
790 TC.getCompilerRT(Args, "profile")));
791 }
792 }
793
794 Arg *PGOGenArg = nullptr;
795 if (PGOGenerateArg) {
796 assert(!CSPGOGenerateArg)((!CSPGOGenerateArg) ? static_cast<void> (0) : __assert_fail
("!CSPGOGenerateArg", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 796, __PRETTY_FUNCTION__))
;
797 PGOGenArg = PGOGenerateArg;
798 CmdArgs.push_back("-fprofile-instrument=llvm");
799 }
800 if (CSPGOGenerateArg) {
801 assert(!PGOGenerateArg)((!PGOGenerateArg) ? static_cast<void> (0) : __assert_fail
("!PGOGenerateArg", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 801, __PRETTY_FUNCTION__))
;
802 PGOGenArg = CSPGOGenerateArg;
803 CmdArgs.push_back("-fprofile-instrument=csllvm");
804 }
805 if (PGOGenArg) {
806 if (TC.getTriple().isWindowsMSVCEnvironment()) {
807 CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
808 TC.getCompilerRT(Args, "profile")));
809 }
810 if (PGOGenArg->getOption().matches(
811 PGOGenerateArg ? options::OPT_fprofile_generate_EQ
812 : options::OPT_fcs_profile_generate_EQ)) {
813 SmallString<128> Path(PGOGenArg->getValue());
814 llvm::sys::path::append(Path, "default_%m.profraw");
815 CmdArgs.push_back(
816 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
817 }
818 }
819
820 if (ProfileUseArg) {
821 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
822 CmdArgs.push_back(Args.MakeArgString(
823 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
824 else if ((ProfileUseArg->getOption().matches(
825 options::OPT_fprofile_use_EQ) ||
826 ProfileUseArg->getOption().matches(
827 options::OPT_fprofile_instr_use))) {
828 SmallString<128> Path(
829 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
830 if (Path.empty() || llvm::sys::fs::is_directory(Path))
831 llvm::sys::path::append(Path, "default.profdata");
832 CmdArgs.push_back(
833 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
834 }
835 }
836
837 if (Args.hasArg(options::OPT_ftest_coverage) ||
838 Args.hasArg(options::OPT_coverage))
839 CmdArgs.push_back("-femit-coverage-notes");
840 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
841 false) ||
842 Args.hasArg(options::OPT_coverage))
843 CmdArgs.push_back("-femit-coverage-data");
844
845 if (Args.hasFlag(options::OPT_fcoverage_mapping,
846 options::OPT_fno_coverage_mapping, false)) {
847 if (!ProfileGenerateArg)
848 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
849 << "-fcoverage-mapping"
850 << "-fprofile-instr-generate";
851
852 CmdArgs.push_back("-fcoverage-mapping");
853 }
854
855 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
856 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
857 if (!Args.hasArg(options::OPT_coverage))
858 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
859 << "-fprofile-exclude-files="
860 << "--coverage";
861
862 StringRef v = Arg->getValue();
863 CmdArgs.push_back(
864 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
865 }
866
867 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
868 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
869 if (!Args.hasArg(options::OPT_coverage))
870 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
871 << "-fprofile-filter-files="
872 << "--coverage";
873
874 StringRef v = Arg->getValue();
875 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
876 }
877
878 if (C.getArgs().hasArg(options::OPT_c) ||
879 C.getArgs().hasArg(options::OPT_S)) {
880 if (Output.isFilename()) {
881 CmdArgs.push_back("-coverage-notes-file");
882 SmallString<128> OutputFilename;
883 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
884 OutputFilename = FinalOutput->getValue();
885 else
886 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
887 SmallString<128> CoverageFilename = OutputFilename;
888 if (llvm::sys::path::is_relative(CoverageFilename))
889 (void)D.getVFS().makeAbsolute(CoverageFilename);
890 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
891 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
892
893 // Leave -fprofile-dir= an unused argument unless .gcda emission is
894 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
895 // the flag used. There is no -fno-profile-dir, so the user has no
896 // targeted way to suppress the warning.
897 if (Args.hasArg(options::OPT_fprofile_arcs) ||
898 Args.hasArg(options::OPT_coverage)) {
899 CmdArgs.push_back("-coverage-data-file");
900 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
901 CoverageFilename = FProfileDir->getValue();
902 llvm::sys::path::append(CoverageFilename, OutputFilename);
903 }
904 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
905 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
906 }
907 }
908 }
909}
910
911/// Check whether the given input tree contains any compilation actions.
912static bool ContainsCompileAction(const Action *A) {
913 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
914 return true;
915
916 for (const auto &AI : A->inputs())
917 if (ContainsCompileAction(AI))
918 return true;
919
920 return false;
921}
922
923/// Check if -relax-all should be passed to the internal assembler.
924/// This is done by default when compiling non-assembler source with -O0.
925static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
926 bool RelaxDefault = true;
927
928 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
929 RelaxDefault = A->getOption().matches(options::OPT_O0);
930
931 if (RelaxDefault) {
932 RelaxDefault = false;
933 for (const auto &Act : C.getActions()) {
934 if (ContainsCompileAction(Act)) {
935 RelaxDefault = true;
936 break;
937 }
938 }
939 }
940
941 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
942 RelaxDefault);
943}
944
945// Extract the integer N from a string spelled "-dwarf-N", returning 0
946// on mismatch. The StringRef input (rather than an Arg) allows
947// for use by the "-Xassembler" option parser.
948static unsigned DwarfVersionNum(StringRef ArgValue) {
949 return llvm::StringSwitch<unsigned>(ArgValue)
950 .Case("-gdwarf-2", 2)
951 .Case("-gdwarf-3", 3)
952 .Case("-gdwarf-4", 4)
953 .Case("-gdwarf-5", 5)
954 .Default(0);
955}
956
957static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
958 codegenoptions::DebugInfoKind DebugInfoKind,
959 unsigned DwarfVersion,
960 llvm::DebuggerKind DebuggerTuning) {
961 switch (DebugInfoKind) {
962 case codegenoptions::DebugDirectivesOnly:
963 CmdArgs.push_back("-debug-info-kind=line-directives-only");
964 break;
965 case codegenoptions::DebugLineTablesOnly:
966 CmdArgs.push_back("-debug-info-kind=line-tables-only");
967 break;
968 case codegenoptions::LimitedDebugInfo:
969 CmdArgs.push_back("-debug-info-kind=limited");
970 break;
971 case codegenoptions::FullDebugInfo:
972 CmdArgs.push_back("-debug-info-kind=standalone");
973 break;
974 default:
975 break;
976 }
977 if (DwarfVersion > 0)
978 CmdArgs.push_back(
979 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
980 switch (DebuggerTuning) {
981 case llvm::DebuggerKind::GDB:
982 CmdArgs.push_back("-debugger-tuning=gdb");
983 break;
984 case llvm::DebuggerKind::LLDB:
985 CmdArgs.push_back("-debugger-tuning=lldb");
986 break;
987 case llvm::DebuggerKind::SCE:
988 CmdArgs.push_back("-debugger-tuning=sce");
989 break;
990 default:
991 break;
992 }
993}
994
995static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
996 const Driver &D, const ToolChain &TC) {
997 assert(A && "Expected non-nullptr argument.")((A && "Expected non-nullptr argument.") ? static_cast
<void> (0) : __assert_fail ("A && \"Expected non-nullptr argument.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 997, __PRETTY_FUNCTION__))
;
998 if (TC.supportsDebugInfoOption(A))
999 return true;
1000 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
1001 << A->getAsString(Args) << TC.getTripleString();
1002 return false;
1003}
1004
1005static void RenderDebugInfoCompressionArgs(const ArgList &Args,
1006 ArgStringList &CmdArgs,
1007 const Driver &D,
1008 const ToolChain &TC) {
1009 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
1010 if (!A)
1011 return;
1012 if (checkDebugInfoOption(A, Args, D, TC)) {
1013 if (A->getOption().getID() == options::OPT_gz) {
1014 if (llvm::zlib::isAvailable())
1015 CmdArgs.push_back("--compress-debug-sections");
1016 else
1017 D.Diag(diag::warn_debug_compression_unavailable);
1018 return;
1019 }
1020
1021 StringRef Value = A->getValue();
1022 if (Value == "none") {
1023 CmdArgs.push_back("--compress-debug-sections=none");
1024 } else if (Value == "zlib" || Value == "zlib-gnu") {
1025 if (llvm::zlib::isAvailable()) {
1026 CmdArgs.push_back(
1027 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
1028 } else {
1029 D.Diag(diag::warn_debug_compression_unavailable);
1030 }
1031 } else {
1032 D.Diag(diag::err_drv_unsupported_option_argument)
1033 << A->getOption().getName() << Value;
1034 }
1035 }
1036}
1037
1038static const char *RelocationModelName(llvm::Reloc::Model Model) {
1039 switch (Model) {
1040 case llvm::Reloc::Static:
1041 return "static";
1042 case llvm::Reloc::PIC_:
1043 return "pic";
1044 case llvm::Reloc::DynamicNoPIC:
1045 return "dynamic-no-pic";
1046 case llvm::Reloc::ROPI:
1047 return "ropi";
1048 case llvm::Reloc::RWPI:
1049 return "rwpi";
1050 case llvm::Reloc::ROPI_RWPI:
1051 return "ropi-rwpi";
1052 }
1053 llvm_unreachable("Unknown Reloc::Model kind")::llvm::llvm_unreachable_internal("Unknown Reloc::Model kind"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1053)
;
1054}
1055
1056void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
1057 const Driver &D, const ArgList &Args,
1058 ArgStringList &CmdArgs,
1059 const InputInfo &Output,
1060 const InputInfoList &Inputs) const {
1061 Arg *A;
1062 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1063
1064 CheckPreprocessingOptions(D, Args);
1065
1066 Args.AddLastArg(CmdArgs, options::OPT_C);
1067 Args.AddLastArg(CmdArgs, options::OPT_CC);
1068
1069 // Handle dependency file generation.
1070 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
1071 (A = Args.getLastArg(options::OPT_MD)) ||
1072 (A = Args.getLastArg(options::OPT_MMD))) {
1073 // Determine the output location.
1074 const char *DepFile;
1075 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1076 DepFile = MF->getValue();
1077 C.addFailureResultFile(DepFile, &JA);
1078 } else if (Output.getType() == types::TY_Dependencies) {
1079 DepFile = Output.getFilename();
1080 } else if (A->getOption().matches(options::OPT_M) ||
1081 A->getOption().matches(options::OPT_MM)) {
1082 DepFile = "-";
1083 } else {
1084 DepFile = getDependencyFileName(Args, Inputs);
1085 C.addFailureResultFile(DepFile, &JA);
1086 }
1087 CmdArgs.push_back("-dependency-file");
1088 CmdArgs.push_back(DepFile);
1089
1090 // Add a default target if one wasn't specified.
1091 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1092 const char *DepTarget;
1093
1094 // If user provided -o, that is the dependency target, except
1095 // when we are only generating a dependency file.
1096 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1097 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1098 DepTarget = OutputOpt->getValue();
1099 } else {
1100 // Otherwise derive from the base input.
1101 //
1102 // FIXME: This should use the computed output file location.
1103 SmallString<128> P(Inputs[0].getBaseInput());
1104 llvm::sys::path::replace_extension(P, "o");
1105 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1106 }
1107
1108 if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1109 CmdArgs.push_back("-w");
1110 }
1111 CmdArgs.push_back("-MT");
1112 SmallString<128> Quoted;
1113 QuoteTarget(DepTarget, Quoted);
1114 CmdArgs.push_back(Args.MakeArgString(Quoted));
1115 }
1116
1117 if (A->getOption().matches(options::OPT_M) ||
1118 A->getOption().matches(options::OPT_MD))
1119 CmdArgs.push_back("-sys-header-deps");
1120 if ((isa<PrecompileJobAction>(JA) &&
1121 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1122 Args.hasArg(options::OPT_fmodule_file_deps))
1123 CmdArgs.push_back("-module-file-deps");
1124 }
1125
1126 if (Args.hasArg(options::OPT_MG)) {
1127 if (!A || A->getOption().matches(options::OPT_MD) ||
1128 A->getOption().matches(options::OPT_MMD))
1129 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1130 CmdArgs.push_back("-MG");
1131 }
1132
1133 Args.AddLastArg(CmdArgs, options::OPT_MP);
1134 Args.AddLastArg(CmdArgs, options::OPT_MV);
1135
1136 // Convert all -MQ <target> args to -MT <quoted target>
1137 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1138 A->claim();
1139
1140 if (A->getOption().matches(options::OPT_MQ)) {
1141 CmdArgs.push_back("-MT");
1142 SmallString<128> Quoted;
1143 QuoteTarget(A->getValue(), Quoted);
1144 CmdArgs.push_back(Args.MakeArgString(Quoted));
1145
1146 // -MT flag - no change
1147 } else {
1148 A->render(Args, CmdArgs);
1149 }
1150 }
1151
1152 // Add offload include arguments specific for CUDA. This must happen before
1153 // we -I or -include anything else, because we must pick up the CUDA headers
1154 // from the particular CUDA installation, rather than from e.g.
1155 // /usr/local/include.
1156 if (JA.isOffloading(Action::OFK_Cuda))
1157 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1158
1159 // If we are offloading to a target via OpenMP we need to include the
1160 // openmp_wrappers folder which contains alternative system headers.
1161 if (JA.isDeviceOffloading(Action::OFK_OpenMP) &&
1162 getToolChain().getTriple().isNVPTX()){
1163 if (!Args.hasArg(options::OPT_nobuiltininc)) {
1164 // Add openmp_wrappers/* to our system include path. This lets us wrap
1165 // standard library headers.
1166 SmallString<128> P(D.ResourceDir);
1167 llvm::sys::path::append(P, "include");
1168 llvm::sys::path::append(P, "openmp_wrappers");
1169 CmdArgs.push_back("-internal-isystem");
1170 CmdArgs.push_back(Args.MakeArgString(P));
1171 }
1172
1173 CmdArgs.push_back("-include");
1174 CmdArgs.push_back("__clang_openmp_math_declares.h");
1175 }
1176
1177 // Add -i* options, and automatically translate to
1178 // -include-pch/-include-pth for transparent PCH support. It's
1179 // wonky, but we include looking for .gch so we can support seamless
1180 // replacement into a build system already set up to be generating
1181 // .gch files.
1182
1183 if (getToolChain().getDriver().IsCLMode()) {
1184 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1185 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1186 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1187 JA.getKind() <= Action::AssembleJobClass) {
1188 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1189 }
1190 if (YcArg || YuArg) {
1191 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1192 if (!isa<PrecompileJobAction>(JA)) {
1193 CmdArgs.push_back("-include-pch");
1194 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1195 C, !ThroughHeader.empty()
1196 ? ThroughHeader
1197 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1198 }
1199
1200 if (ThroughHeader.empty()) {
1201 CmdArgs.push_back(Args.MakeArgString(
1202 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1203 } else {
1204 CmdArgs.push_back(
1205 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1206 }
1207 }
1208 }
1209
1210 bool RenderedImplicitInclude = false;
1211 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1212 if (A->getOption().matches(options::OPT_include)) {
1213 // Handling of gcc-style gch precompiled headers.
1214 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1215 RenderedImplicitInclude = true;
1216
1217 bool FoundPCH = false;
1218 SmallString<128> P(A->getValue());
1219 // We want the files to have a name like foo.h.pch. Add a dummy extension
1220 // so that replace_extension does the right thing.
1221 P += ".dummy";
1222 llvm::sys::path::replace_extension(P, "pch");
1223 if (llvm::sys::fs::exists(P))
1224 FoundPCH = true;
1225
1226 if (!FoundPCH) {
1227 llvm::sys::path::replace_extension(P, "gch");
1228 if (llvm::sys::fs::exists(P)) {
1229 FoundPCH = true;
1230 }
1231 }
1232
1233 if (FoundPCH) {
1234 if (IsFirstImplicitInclude) {
1235 A->claim();
1236 CmdArgs.push_back("-include-pch");
1237 CmdArgs.push_back(Args.MakeArgString(P));
1238 continue;
1239 } else {
1240 // Ignore the PCH if not first on command line and emit warning.
1241 D.Diag(diag::warn_drv_pch_not_first_include) << P
1242 << A->getAsString(Args);
1243 }
1244 }
1245 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1246 // Handling of paths which must come late. These entries are handled by
1247 // the toolchain itself after the resource dir is inserted in the right
1248 // search order.
1249 // Do not claim the argument so that the use of the argument does not
1250 // silently go unnoticed on toolchains which do not honour the option.
1251 continue;
1252 }
1253
1254 // Not translated, render as usual.
1255 A->claim();
1256 A->render(Args, CmdArgs);
1257 }
1258
1259 Args.AddAllArgs(CmdArgs,
1260 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1261 options::OPT_F, options::OPT_index_header_map});
1262
1263 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1264
1265 // FIXME: There is a very unfortunate problem here, some troubled
1266 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1267 // really support that we would have to parse and then translate
1268 // those options. :(
1269 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1270 options::OPT_Xpreprocessor);
1271
1272 // -I- is a deprecated GCC feature, reject it.
1273 if (Arg *A = Args.getLastArg(options::OPT_I_))
1274 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1275
1276 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1277 // -isysroot to the CC1 invocation.
1278 StringRef sysroot = C.getSysRoot();
1279 if (sysroot != "") {
1280 if (!Args.hasArg(options::OPT_isysroot)) {
1281 CmdArgs.push_back("-isysroot");
1282 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1283 }
1284 }
1285
1286 // Parse additional include paths from environment variables.
1287 // FIXME: We should probably sink the logic for handling these from the
1288 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1289 // CPATH - included following the user specified includes (but prior to
1290 // builtin and standard includes).
1291 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1292 // C_INCLUDE_PATH - system includes enabled when compiling C.
1293 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1294 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1295 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1296 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1297 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1298 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1299 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1300
1301 // While adding the include arguments, we also attempt to retrieve the
1302 // arguments of related offloading toolchains or arguments that are specific
1303 // of an offloading programming model.
1304
1305 // Add C++ include arguments, if needed.
1306 if (types::isCXX(Inputs[0].getType()))
1307 forAllAssociatedToolChains(C, JA, getToolChain(),
1308 [&Args, &CmdArgs](const ToolChain &TC) {
1309 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1310 });
1311
1312 // Add system include arguments for all targets but IAMCU.
1313 if (!IsIAMCU)
1314 forAllAssociatedToolChains(C, JA, getToolChain(),
1315 [&Args, &CmdArgs](const ToolChain &TC) {
1316 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1317 });
1318 else {
1319 // For IAMCU add special include arguments.
1320 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1321 }
1322}
1323
1324// FIXME: Move to target hook.
1325static bool isSignedCharDefault(const llvm::Triple &Triple) {
1326 switch (Triple.getArch()) {
1327 default:
1328 return true;
1329
1330 case llvm::Triple::aarch64:
1331 case llvm::Triple::aarch64_be:
1332 case llvm::Triple::arm:
1333 case llvm::Triple::armeb:
1334 case llvm::Triple::thumb:
1335 case llvm::Triple::thumbeb:
1336 if (Triple.isOSDarwin() || Triple.isOSWindows())
1337 return true;
1338 return false;
1339
1340 case llvm::Triple::ppc:
1341 case llvm::Triple::ppc64:
1342 if (Triple.isOSDarwin())
1343 return true;
1344 return false;
1345
1346 case llvm::Triple::hexagon:
1347 case llvm::Triple::ppc64le:
1348 case llvm::Triple::riscv32:
1349 case llvm::Triple::riscv64:
1350 case llvm::Triple::systemz:
1351 case llvm::Triple::xcore:
1352 return false;
1353 }
1354}
1355
1356static bool isNoCommonDefault(const llvm::Triple &Triple) {
1357 switch (Triple.getArch()) {
1358 default:
1359 if (Triple.isOSFuchsia())
1360 return true;
1361 return false;
1362
1363 case llvm::Triple::xcore:
1364 case llvm::Triple::wasm32:
1365 case llvm::Triple::wasm64:
1366 return true;
1367 }
1368}
1369
1370namespace {
1371void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1372 ArgStringList &CmdArgs) {
1373 // Select the ABI to use.
1374 // FIXME: Support -meabi.
1375 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1376 const char *ABIName = nullptr;
1377 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1378 ABIName = A->getValue();
1379 } else {
1380 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1381 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1382 }
1383
1384 CmdArgs.push_back("-target-abi");
1385 CmdArgs.push_back(ABIName);
1386}
1387}
1388
1389void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1390 ArgStringList &CmdArgs, bool KernelOrKext) const {
1391 RenderARMABI(Triple, Args, CmdArgs);
1392
1393 // Determine floating point ABI from the options & target defaults.
1394 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1395 if (ABI == arm::FloatABI::Soft) {
1396 // Floating point operations and argument passing are soft.
1397 // FIXME: This changes CPP defines, we need -target-soft-float.
1398 CmdArgs.push_back("-msoft-float");
1399 CmdArgs.push_back("-mfloat-abi");
1400 CmdArgs.push_back("soft");
1401 } else if (ABI == arm::FloatABI::SoftFP) {
1402 // Floating point operations are hard, but argument passing is soft.
1403 CmdArgs.push_back("-mfloat-abi");
1404 CmdArgs.push_back("soft");
1405 } else {
1406 // Floating point operations and argument passing are hard.
1407 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!")((ABI == arm::FloatABI::Hard && "Invalid float abi!")
? static_cast<void> (0) : __assert_fail ("ABI == arm::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1407, __PRETTY_FUNCTION__))
;
1408 CmdArgs.push_back("-mfloat-abi");
1409 CmdArgs.push_back("hard");
1410 }
1411
1412 // Forward the -mglobal-merge option for explicit control over the pass.
1413 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1414 options::OPT_mno_global_merge)) {
1415 CmdArgs.push_back("-mllvm");
1416 if (A->getOption().matches(options::OPT_mno_global_merge))
1417 CmdArgs.push_back("-arm-global-merge=false");
1418 else
1419 CmdArgs.push_back("-arm-global-merge=true");
1420 }
1421
1422 if (!Args.hasFlag(options::OPT_mimplicit_float,
1423 options::OPT_mno_implicit_float, true))
1424 CmdArgs.push_back("-no-implicit-float");
1425
1426 if (Args.getLastArg(options::OPT_mcmse))
1427 CmdArgs.push_back("-mcmse");
1428}
1429
1430void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1431 const ArgList &Args, bool KernelOrKext,
1432 ArgStringList &CmdArgs) const {
1433 const ToolChain &TC = getToolChain();
1434
1435 // Add the target features
1436 getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1437
1438 // Add target specific flags.
1439 switch (TC.getArch()) {
1440 default:
1441 break;
1442
1443 case llvm::Triple::arm:
1444 case llvm::Triple::armeb:
1445 case llvm::Triple::thumb:
1446 case llvm::Triple::thumbeb:
1447 // Use the effective triple, which takes into account the deployment target.
1448 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1449 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1450 break;
1451
1452 case llvm::Triple::aarch64:
1453 case llvm::Triple::aarch64_be:
1454 AddAArch64TargetArgs(Args, CmdArgs);
1455 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1456 break;
1457
1458 case llvm::Triple::mips:
1459 case llvm::Triple::mipsel:
1460 case llvm::Triple::mips64:
1461 case llvm::Triple::mips64el:
1462 AddMIPSTargetArgs(Args, CmdArgs);
1463 break;
1464
1465 case llvm::Triple::ppc:
1466 case llvm::Triple::ppc64:
1467 case llvm::Triple::ppc64le:
1468 AddPPCTargetArgs(Args, CmdArgs);
1469 break;
1470
1471 case llvm::Triple::riscv32:
1472 case llvm::Triple::riscv64:
1473 AddRISCVTargetArgs(Args, CmdArgs);
1474 break;
1475
1476 case llvm::Triple::sparc:
1477 case llvm::Triple::sparcel:
1478 case llvm::Triple::sparcv9:
1479 AddSparcTargetArgs(Args, CmdArgs);
1480 break;
1481
1482 case llvm::Triple::systemz:
1483 AddSystemZTargetArgs(Args, CmdArgs);
1484 break;
1485
1486 case llvm::Triple::x86:
1487 case llvm::Triple::x86_64:
1488 AddX86TargetArgs(Args, CmdArgs);
1489 break;
1490
1491 case llvm::Triple::lanai:
1492 AddLanaiTargetArgs(Args, CmdArgs);
1493 break;
1494
1495 case llvm::Triple::hexagon:
1496 AddHexagonTargetArgs(Args, CmdArgs);
1497 break;
1498
1499 case llvm::Triple::wasm32:
1500 case llvm::Triple::wasm64:
1501 AddWebAssemblyTargetArgs(Args, CmdArgs);
1502 break;
1503 }
1504}
1505
1506// Parse -mbranch-protection=<protection>[+<protection>]* where
1507// <protection> ::= standard | none | [bti,pac-ret[+b-key,+leaf]*]
1508// Returns a triple of (return address signing Scope, signing key, require
1509// landing pads)
1510static std::tuple<StringRef, StringRef, bool>
1511ParseAArch64BranchProtection(const Driver &D, const ArgList &Args,
1512 const Arg *A) {
1513 StringRef Scope = "none";
1514 StringRef Key = "a_key";
1515 bool IndirectBranches = false;
1516
1517 StringRef Value = A->getValue();
1518 // This maps onto -mbranch-protection=<scope>+<key>
1519
1520 if (Value.equals("standard")) {
1521 Scope = "non-leaf";
1522 Key = "a_key";
1523 IndirectBranches = true;
1524
1525 } else if (!Value.equals("none")) {
1526 SmallVector<StringRef, 4> BranchProtection;
1527 StringRef(A->getValue()).split(BranchProtection, '+');
1528
1529 auto Protection = BranchProtection.begin();
1530 while (Protection != BranchProtection.end()) {
1531 if (Protection->equals("bti"))
1532 IndirectBranches = true;
1533 else if (Protection->equals("pac-ret")) {
1534 Scope = "non-leaf";
1535 while (++Protection != BranchProtection.end()) {
1536 // Inner loop as "leaf" and "b-key" options must only appear attached
1537 // to pac-ret.
1538 if (Protection->equals("leaf"))
1539 Scope = "all";
1540 else if (Protection->equals("b-key"))
1541 Key = "b_key";
1542 else
1543 break;
1544 }
1545 Protection--;
1546 } else
1547 D.Diag(diag::err_invalid_branch_protection)
1548 << *Protection << A->getAsString(Args);
1549 Protection++;
1550 }
1551 }
1552
1553 return std::make_tuple(Scope, Key, IndirectBranches);
1554}
1555
1556namespace {
1557void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1558 ArgStringList &CmdArgs) {
1559 const char *ABIName = nullptr;
1560 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1561 ABIName = A->getValue();
1562 else if (Triple.isOSDarwin())
1563 ABIName = "darwinpcs";
1564 else
1565 ABIName = "aapcs";
1566
1567 CmdArgs.push_back("-target-abi");
1568 CmdArgs.push_back(ABIName);
1569}
1570}
1571
1572void Clang::AddAArch64TargetArgs(const ArgList &Args,
1573 ArgStringList &CmdArgs) const {
1574 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1575
1576 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1577 Args.hasArg(options::OPT_mkernel) ||
1578 Args.hasArg(options::OPT_fapple_kext))
1579 CmdArgs.push_back("-disable-red-zone");
1580
1581 if (!Args.hasFlag(options::OPT_mimplicit_float,
1582 options::OPT_mno_implicit_float, true))
1583 CmdArgs.push_back("-no-implicit-float");
1584
1585 RenderAArch64ABI(Triple, Args, CmdArgs);
1586
1587 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1588 options::OPT_mno_fix_cortex_a53_835769)) {
1589 CmdArgs.push_back("-mllvm");
1590 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1591 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1592 else
1593 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1594 } else if (Triple.isAndroid()) {
1595 // Enabled A53 errata (835769) workaround by default on android
1596 CmdArgs.push_back("-mllvm");
1597 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1598 }
1599
1600 // Forward the -mglobal-merge option for explicit control over the pass.
1601 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1602 options::OPT_mno_global_merge)) {
1603 CmdArgs.push_back("-mllvm");
1604 if (A->getOption().matches(options::OPT_mno_global_merge))
1605 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1606 else
1607 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1608 }
1609
1610 // Enable/disable return address signing and indirect branch targets.
1611 if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1612 options::OPT_mbranch_protection_EQ)) {
1613
1614 const Driver &D = getToolChain().getDriver();
1615
1616 StringRef Scope, Key;
1617 bool IndirectBranches;
1618
1619 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1620 Scope = A->getValue();
1621 if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1622 !Scope.equals("all"))
1623 D.Diag(diag::err_invalid_branch_protection)
1624 << Scope << A->getAsString(Args);
1625 Key = "a_key";
1626 IndirectBranches = false;
1627 } else
1628 std::tie(Scope, Key, IndirectBranches) =
1629 ParseAArch64BranchProtection(D, Args, A);
1630
1631 CmdArgs.push_back(
1632 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1633 CmdArgs.push_back(
1634 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1635 if (IndirectBranches)
1636 CmdArgs.push_back("-mbranch-target-enforce");
1637 }
1638}
1639
1640void Clang::AddMIPSTargetArgs(const ArgList &Args,
1641 ArgStringList &CmdArgs) const {
1642 const Driver &D = getToolChain().getDriver();
1643 StringRef CPUName;
1644 StringRef ABIName;
1645 const llvm::Triple &Triple = getToolChain().getTriple();
1646 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1647
1648 CmdArgs.push_back("-target-abi");
1649 CmdArgs.push_back(ABIName.data());
1650
1651 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1652 if (ABI == mips::FloatABI::Soft) {
1653 // Floating point operations and argument passing are soft.
1654 CmdArgs.push_back("-msoft-float");
1655 CmdArgs.push_back("-mfloat-abi");
1656 CmdArgs.push_back("soft");
1657 } else {
1658 // Floating point operations and argument passing are hard.
1659 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!")((ABI == mips::FloatABI::Hard && "Invalid float abi!"
) ? static_cast<void> (0) : __assert_fail ("ABI == mips::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1659, __PRETTY_FUNCTION__))
;
1660 CmdArgs.push_back("-mfloat-abi");
1661 CmdArgs.push_back("hard");
1662 }
1663
1664 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1665 if (A->getOption().matches(options::OPT_mxgot)) {
1666 CmdArgs.push_back("-mllvm");
1667 CmdArgs.push_back("-mxgot");
1668 }
1669 }
1670
1671 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1672 options::OPT_mno_ldc1_sdc1)) {
1673 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1674 CmdArgs.push_back("-mllvm");
1675 CmdArgs.push_back("-mno-ldc1-sdc1");
1676 }
1677 }
1678
1679 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1680 options::OPT_mno_check_zero_division)) {
1681 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1682 CmdArgs.push_back("-mllvm");
1683 CmdArgs.push_back("-mno-check-zero-division");
1684 }
1685 }
1686
1687 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1688 StringRef v = A->getValue();
1689 CmdArgs.push_back("-mllvm");
1690 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1691 A->claim();
1692 }
1693
1694 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1695 Arg *ABICalls =
1696 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1697
1698 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1699 // -mgpopt is the default for static, -fno-pic environments but these two
1700 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1701 // the only case where -mllvm -mgpopt is passed.
1702 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1703 // passed explicitly when compiling something with -mabicalls
1704 // (implictly) in affect. Currently the warning is in the backend.
1705 //
1706 // When the ABI in use is N64, we also need to determine the PIC mode that
1707 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1708 bool NoABICalls =
1709 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1710
1711 llvm::Reloc::Model RelocationModel;
1712 unsigned PICLevel;
1713 bool IsPIE;
1714 std::tie(RelocationModel, PICLevel, IsPIE) =
1715 ParsePICArgs(getToolChain(), Args);
1716
1717 NoABICalls = NoABICalls ||
1718 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1719
1720 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1721 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1722 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1723 CmdArgs.push_back("-mllvm");
1724 CmdArgs.push_back("-mgpopt");
1725
1726 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1727 options::OPT_mno_local_sdata);
1728 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1729 options::OPT_mno_extern_sdata);
1730 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1731 options::OPT_mno_embedded_data);
1732 if (LocalSData) {
1733 CmdArgs.push_back("-mllvm");
1734 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1735 CmdArgs.push_back("-mlocal-sdata=1");
1736 } else {
1737 CmdArgs.push_back("-mlocal-sdata=0");
1738 }
1739 LocalSData->claim();
1740 }
1741
1742 if (ExternSData) {
1743 CmdArgs.push_back("-mllvm");
1744 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1745 CmdArgs.push_back("-mextern-sdata=1");
1746 } else {
1747 CmdArgs.push_back("-mextern-sdata=0");
1748 }
1749 ExternSData->claim();
1750 }
1751
1752 if (EmbeddedData) {
1753 CmdArgs.push_back("-mllvm");
1754 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1755 CmdArgs.push_back("-membedded-data=1");
1756 } else {
1757 CmdArgs.push_back("-membedded-data=0");
1758 }
1759 EmbeddedData->claim();
1760 }
1761
1762 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1763 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1764
1765 if (GPOpt)
1766 GPOpt->claim();
1767
1768 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1769 StringRef Val = StringRef(A->getValue());
1770 if (mips::hasCompactBranches(CPUName)) {
1771 if (Val == "never" || Val == "always" || Val == "optimal") {
1772 CmdArgs.push_back("-mllvm");
1773 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1774 } else
1775 D.Diag(diag::err_drv_unsupported_option_argument)
1776 << A->getOption().getName() << Val;
1777 } else
1778 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1779 }
1780
1781 if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1782 options::OPT_mno_relax_pic_calls)) {
1783 if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1784 CmdArgs.push_back("-mllvm");
1785 CmdArgs.push_back("-mips-jalr-reloc=0");
1786 }
1787 }
1788}
1789
1790void Clang::AddPPCTargetArgs(const ArgList &Args,
1791 ArgStringList &CmdArgs) const {
1792 // Select the ABI to use.
1793 const char *ABIName = nullptr;
1794 if (getToolChain().getTriple().isOSLinux())
1795 switch (getToolChain().getArch()) {
1796 case llvm::Triple::ppc64: {
1797 // When targeting a processor that supports QPX, or if QPX is
1798 // specifically enabled, default to using the ABI that supports QPX (so
1799 // long as it is not specifically disabled).
1800 bool HasQPX = false;
1801 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1802 HasQPX = A->getValue() == StringRef("a2q");
1803 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1804 if (HasQPX) {
1805 ABIName = "elfv1-qpx";
1806 break;
1807 }
1808
1809 ABIName = "elfv1";
1810 break;
1811 }
1812 case llvm::Triple::ppc64le:
1813 ABIName = "elfv2";
1814 break;
1815 default:
1816 break;
1817 }
1818
1819 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1820 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1821 // the option if given as we don't have backend support for any targets
1822 // that don't use the altivec abi.
1823 if (StringRef(A->getValue()) != "altivec")
1824 ABIName = A->getValue();
1825
1826 ppc::FloatABI FloatABI =
1827 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1828
1829 if (FloatABI == ppc::FloatABI::Soft) {
1830 // Floating point operations and argument passing are soft.
1831 CmdArgs.push_back("-msoft-float");
1832 CmdArgs.push_back("-mfloat-abi");
1833 CmdArgs.push_back("soft");
1834 } else {
1835 // Floating point operations and argument passing are hard.
1836 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!")((FloatABI == ppc::FloatABI::Hard && "Invalid float abi!"
) ? static_cast<void> (0) : __assert_fail ("FloatABI == ppc::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1836, __PRETTY_FUNCTION__))
;
1837 CmdArgs.push_back("-mfloat-abi");
1838 CmdArgs.push_back("hard");
1839 }
1840
1841 if (ABIName) {
1842 CmdArgs.push_back("-target-abi");
1843 CmdArgs.push_back(ABIName);
1844 }
1845}
1846
1847void Clang::AddRISCVTargetArgs(const ArgList &Args,
1848 ArgStringList &CmdArgs) const {
1849 // FIXME: currently defaults to the soft-float ABIs. Will need to be
1850 // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropriate.
1851 const char *ABIName = nullptr;
1852 const llvm::Triple &Triple = getToolChain().getTriple();
1853 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1854 ABIName = A->getValue();
1855 else if (Triple.getArch() == llvm::Triple::riscv32)
1856 ABIName = "ilp32";
1857 else if (Triple.getArch() == llvm::Triple::riscv64)
1858 ABIName = "lp64";
1859 else
1860 llvm_unreachable("Unexpected triple!")::llvm::llvm_unreachable_internal("Unexpected triple!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1860)
;
1861
1862 CmdArgs.push_back("-target-abi");
1863 CmdArgs.push_back(ABIName);
1864}
1865
1866void Clang::AddSparcTargetArgs(const ArgList &Args,
1867 ArgStringList &CmdArgs) const {
1868 sparc::FloatABI FloatABI =
1869 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1870
1871 if (FloatABI == sparc::FloatABI::Soft) {
1872 // Floating point operations and argument passing are soft.
1873 CmdArgs.push_back("-msoft-float");
1874 CmdArgs.push_back("-mfloat-abi");
1875 CmdArgs.push_back("soft");
1876 } else {
1877 // Floating point operations and argument passing are hard.
1878 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!")((FloatABI == sparc::FloatABI::Hard && "Invalid float abi!"
) ? static_cast<void> (0) : __assert_fail ("FloatABI == sparc::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1878, __PRETTY_FUNCTION__))
;
1879 CmdArgs.push_back("-mfloat-abi");
1880 CmdArgs.push_back("hard");
1881 }
1882}
1883
1884void Clang::AddSystemZTargetArgs(const ArgList &Args,
1885 ArgStringList &CmdArgs) const {
1886 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1887 CmdArgs.push_back("-mbackchain");
1888}
1889
1890void Clang::AddX86TargetArgs(const ArgList &Args,
1891 ArgStringList &CmdArgs) const {
1892 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1893 Args.hasArg(options::OPT_mkernel) ||
1894 Args.hasArg(options::OPT_fapple_kext))
1895 CmdArgs.push_back("-disable-red-zone");
1896
1897 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
1898 options::OPT_mno_tls_direct_seg_refs, true))
1899 CmdArgs.push_back("-mno-tls-direct-seg-refs");
1900
1901 // Default to avoid implicit floating-point for kernel/kext code, but allow
1902 // that to be overridden with -mno-soft-float.
1903 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1904 Args.hasArg(options::OPT_fapple_kext));
1905 if (Arg *A = Args.getLastArg(
1906 options::OPT_msoft_float, options::OPT_mno_soft_float,
1907 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1908 const Option &O = A->getOption();
1909 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1910 O.matches(options::OPT_msoft_float));
1911 }
1912 if (NoImplicitFloat)
1913 CmdArgs.push_back("-no-implicit-float");
1914
1915 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1916 StringRef Value = A->getValue();
1917 if (Value == "intel" || Value == "att") {
1918 CmdArgs.push_back("-mllvm");
1919 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1920 } else {
1921 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1922 << A->getOption().getName() << Value;
1923 }
1924 } else if (getToolChain().getDriver().IsCLMode()) {
1925 CmdArgs.push_back("-mllvm");
1926 CmdArgs.push_back("-x86-asm-syntax=intel");
1927 }
1928
1929 // Set flags to support MCU ABI.
1930 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1931 CmdArgs.push_back("-mfloat-abi");
1932 CmdArgs.push_back("soft");
1933 CmdArgs.push_back("-mstack-alignment=4");
1934 }
1935}
1936
1937void Clang::AddHexagonTargetArgs(const ArgList &Args,
1938 ArgStringList &CmdArgs) const {
1939 CmdArgs.push_back("-mqdsp6-compat");
1940 CmdArgs.push_back("-Wreturn-type");
1941
1942 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1943 CmdArgs.push_back("-mllvm");
1944 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1945 Twine(G.getValue())));
1946 }
1947
1948 if (!Args.hasArg(options::OPT_fno_short_enums))
1949 CmdArgs.push_back("-fshort-enums");
1950 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1951 CmdArgs.push_back("-mllvm");
1952 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1953 }
1954 CmdArgs.push_back("-mllvm");
1955 CmdArgs.push_back("-machine-sink-split=0");
1956}
1957
1958void Clang::AddLanaiTargetArgs(const ArgList &Args,
1959 ArgStringList &CmdArgs) const {
1960 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1961 StringRef CPUName = A->getValue();
1962
1963 CmdArgs.push_back("-target-cpu");
1964 CmdArgs.push_back(Args.MakeArgString(CPUName));
1965 }
1966 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1967 StringRef Value = A->getValue();
1968 // Only support mregparm=4 to support old usage. Report error for all other
1969 // cases.
1970 int Mregparm;
1971 if (Value.getAsInteger(10, Mregparm)) {
1972 if (Mregparm != 4) {
1973 getToolChain().getDriver().Diag(
1974 diag::err_drv_unsupported_option_argument)
1975 << A->getOption().getName() << Value;
1976 }
1977 }
1978 }
1979}
1980
1981void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1982 ArgStringList &CmdArgs) const {
1983 // Default to "hidden" visibility.
1984 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1985 options::OPT_fvisibility_ms_compat)) {
1986 CmdArgs.push_back("-fvisibility");
1987 CmdArgs.push_back("hidden");
1988 }
1989}
1990
1991void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1992 StringRef Target, const InputInfo &Output,
1993 const InputInfo &Input, const ArgList &Args) const {
1994 // If this is a dry run, do not create the compilation database file.
1995 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1996 return;
1997
1998 using llvm::yaml::escape;
1999 const Driver &D = getToolChain().getDriver();
2000
2001 if (!CompilationDatabase) {
2002 std::error_code EC;
2003 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
2004 if (EC) {
2005 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2006 << EC.message();
2007 return;
2008 }
2009 CompilationDatabase = std::move(File);
2010 }
2011 auto &CDB = *CompilationDatabase;
2012 SmallString<128> Buf;
2013 if (llvm::sys::fs::current_path(Buf))
2014 Buf = ".";
2015 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
2016 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
2017 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
2018 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
2019 Buf = "-x";
2020 Buf += types::getTypeName(Input.getType());
2021 CDB << ", \"" << escape(Buf) << "\"";
2022 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2023 Buf = "--sysroot=";
2024 Buf += D.SysRoot;
2025 CDB << ", \"" << escape(Buf) << "\"";
2026 }
2027 CDB << ", \"" << escape(Input.getFilename()) << "\"";
2028 for (auto &A: Args) {
2029 auto &O = A->getOption();
2030 // Skip language selection, which is positional.
2031 if (O.getID() == options::OPT_x)
2032 continue;
2033 // Skip writing dependency output and the compilation database itself.
2034 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2035 continue;
2036 // Skip inputs.
2037 if (O.getKind() == Option::InputClass)
2038 continue;
2039 // All other arguments are quoted and appended.
2040 ArgStringList ASL;
2041 A->render(Args, ASL);
2042 for (auto &it: ASL)
2043 CDB << ", \"" << escape(it) << "\"";
2044 }
2045 Buf = "--target=";
2046 Buf += Target;
2047 CDB << ", \"" << escape(Buf) << "\"]},\n";
2048}
2049
2050static void CollectArgsForIntegratedAssembler(Compilation &C,
2051 const ArgList &Args,
2052 ArgStringList &CmdArgs,
2053 const Driver &D) {
2054 if (UseRelaxAll(C, Args))
2055 CmdArgs.push_back("-mrelax-all");
2056
2057 // Only default to -mincremental-linker-compatible if we think we are
2058 // targeting the MSVC linker.
2059 bool DefaultIncrementalLinkerCompatible =
2060 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2061 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2062 options::OPT_mno_incremental_linker_compatible,
2063 DefaultIncrementalLinkerCompatible))
2064 CmdArgs.push_back("-mincremental-linker-compatible");
2065
2066 switch (C.getDefaultToolChain().getArch()) {
2067 case llvm::Triple::arm:
2068 case llvm::Triple::armeb:
2069 case llvm::Triple::thumb:
2070 case llvm::Triple::thumbeb:
2071 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2072 StringRef Value = A->getValue();
2073 if (Value == "always" || Value == "never" || Value == "arm" ||
2074 Value == "thumb") {
2075 CmdArgs.push_back("-mllvm");
2076 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2077 } else {
2078 D.Diag(diag::err_drv_unsupported_option_argument)
2079 << A->getOption().getName() << Value;
2080 }
2081 }
2082 break;
2083 default:
2084 break;
2085 }
2086
2087 // When passing -I arguments to the assembler we sometimes need to
2088 // unconditionally take the next argument. For example, when parsing
2089 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2090 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2091 // arg after parsing the '-I' arg.
2092 bool TakeNextArg = false;
2093
2094 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2095 bool UseNoExecStack = C.getDefaultToolChain().isNoExecStackDefault();
2096 const char *MipsTargetFeature = nullptr;
2097 for (const Arg *A :
2098 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2099 A->claim();
2100
2101 for (StringRef Value : A->getValues()) {
2102 if (TakeNextArg) {
2103 CmdArgs.push_back(Value.data());
2104 TakeNextArg = false;
2105 continue;
2106 }
2107
2108 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2109 Value == "-mbig-obj")
2110 continue; // LLVM handles bigobj automatically
2111
2112 switch (C.getDefaultToolChain().getArch()) {
2113 default:
2114 break;
2115 case llvm::Triple::thumb:
2116 case llvm::Triple::thumbeb:
2117 case llvm::Triple::arm:
2118 case llvm::Triple::armeb:
2119 if (Value == "-mthumb")
2120 // -mthumb has already been processed in ComputeLLVMTriple()
2121 // recognize but skip over here.
2122 continue;
2123 break;
2124 case llvm::Triple::mips:
2125 case llvm::Triple::mipsel:
2126 case llvm::Triple::mips64:
2127 case llvm::Triple::mips64el:
2128 if (Value == "--trap") {
2129 CmdArgs.push_back("-target-feature");
2130 CmdArgs.push_back("+use-tcc-in-div");
2131 continue;
2132 }
2133 if (Value == "--break") {
2134 CmdArgs.push_back("-target-feature");
2135 CmdArgs.push_back("-use-tcc-in-div");
2136 continue;
2137 }
2138 if (Value.startswith("-msoft-float")) {
2139 CmdArgs.push_back("-target-feature");
2140 CmdArgs.push_back("+soft-float");
2141 continue;
2142 }
2143 if (Value.startswith("-mhard-float")) {
2144 CmdArgs.push_back("-target-feature");
2145 CmdArgs.push_back("-soft-float");
2146 continue;
2147 }
2148
2149 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2150 .Case("-mips1", "+mips1")
2151 .Case("-mips2", "+mips2")
2152 .Case("-mips3", "+mips3")
2153 .Case("-mips4", "+mips4")
2154 .Case("-mips5", "+mips5")
2155 .Case("-mips32", "+mips32")
2156 .Case("-mips32r2", "+mips32r2")
2157 .Case("-mips32r3", "+mips32r3")
2158 .Case("-mips32r5", "+mips32r5")
2159 .Case("-mips32r6", "+mips32r6")
2160 .Case("-mips64", "+mips64")
2161 .Case("-mips64r2", "+mips64r2")
2162 .Case("-mips64r3", "+mips64r3")
2163 .Case("-mips64r5", "+mips64r5")
2164 .Case("-mips64r6", "+mips64r6")
2165 .Default(nullptr);
2166 if (MipsTargetFeature)
2167 continue;
2168 }
2169
2170 if (Value == "-force_cpusubtype_ALL") {
2171 // Do nothing, this is the default and we don't support anything else.
2172 } else if (Value == "-L") {
2173 CmdArgs.push_back("-msave-temp-labels");
2174 } else if (Value == "--fatal-warnings") {
2175 CmdArgs.push_back("-massembler-fatal-warnings");
2176 } else if (Value == "--noexecstack") {
2177 UseNoExecStack = true;
2178 } else if (Value.startswith("-compress-debug-sections") ||
2179 Value.startswith("--compress-debug-sections") ||
2180 Value == "-nocompress-debug-sections" ||
2181 Value == "--nocompress-debug-sections") {
2182 CmdArgs.push_back(Value.data());
2183 } else if (Value == "-mrelax-relocations=yes" ||
2184 Value == "--mrelax-relocations=yes") {
2185 UseRelaxRelocations = true;
2186 } else if (Value == "-mrelax-relocations=no" ||
2187 Value == "--mrelax-relocations=no") {
2188 UseRelaxRelocations = false;
2189 } else if (Value.startswith("-I")) {
2190 CmdArgs.push_back(Value.data());
2191 // We need to consume the next argument if the current arg is a plain
2192 // -I. The next arg will be the include directory.
2193 if (Value == "-I")
2194 TakeNextArg = true;
2195 } else if (Value.startswith("-gdwarf-")) {
2196 // "-gdwarf-N" options are not cc1as options.
2197 unsigned DwarfVersion = DwarfVersionNum(Value);
2198 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2199 CmdArgs.push_back(Value.data());
2200 } else {
2201 RenderDebugEnablingArgs(Args, CmdArgs,
2202 codegenoptions::LimitedDebugInfo,
2203 DwarfVersion, llvm::DebuggerKind::Default);
2204 }
2205 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2206 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2207 // Do nothing, we'll validate it later.
2208 } else if (Value == "-defsym") {
2209 if (A->getNumValues() != 2) {
2210 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2211 break;
2212 }
2213 const char *S = A->getValue(1);
2214 auto Pair = StringRef(S).split('=');
2215 auto Sym = Pair.first;
2216 auto SVal = Pair.second;
2217
2218 if (Sym.empty() || SVal.empty()) {
2219 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2220 break;
2221 }
2222 int64_t IVal;
2223 if (SVal.getAsInteger(0, IVal)) {
2224 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2225 break;
2226 }
2227 CmdArgs.push_back(Value.data());
2228 TakeNextArg = true;
2229 } else if (Value == "-fdebug-compilation-dir") {
2230 CmdArgs.push_back("-fdebug-compilation-dir");
2231 TakeNextArg = true;
2232 } else {
2233 D.Diag(diag::err_drv_unsupported_option_argument)
2234 << A->getOption().getName() << Value;
2235 }
2236 }
2237 }
2238 if (UseRelaxRelocations)
2239 CmdArgs.push_back("--mrelax-relocations");
2240 if (UseNoExecStack)
2241 CmdArgs.push_back("-mnoexecstack");
2242 if (MipsTargetFeature != nullptr) {
2243 CmdArgs.push_back("-target-feature");
2244 CmdArgs.push_back(MipsTargetFeature);
2245 }
2246
2247 // forward -fembed-bitcode to assmebler
2248 if (C.getDriver().embedBitcodeEnabled() ||
2249 C.getDriver().embedBitcodeMarkerOnly())
2250 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2251}
2252
2253static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2254 bool OFastEnabled, const ArgList &Args,
2255 ArgStringList &CmdArgs) {
2256 // Handle various floating point optimization flags, mapping them to the
2257 // appropriate LLVM code generation flags. This is complicated by several
2258 // "umbrella" flags, so we do this by stepping through the flags incrementally
2259 // adjusting what we think is enabled/disabled, then at the end setting the
2260 // LLVM flags based on the final state.
2261 bool HonorINFs = true;
2262 bool HonorNaNs = true;
2263 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2264 bool MathErrno = TC.IsMathErrnoDefault();
2265 bool AssociativeMath = false;
2266 bool ReciprocalMath = false;
2267 bool SignedZeros = true;
2268 bool TrappingMath = true;
2269 StringRef DenormalFPMath = "";
2270 StringRef FPContract = "";
2271
2272 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2273 CmdArgs.push_back("-mlimit-float-precision");
2274 CmdArgs.push_back(A->getValue());
2275 }
2276
2277 for (const Arg *A : Args) {
2278 switch (A->getOption().getID()) {
2279 // If this isn't an FP option skip the claim below
2280 default: continue;
2281
2282 // Options controlling individual features
2283 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2284 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2285 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2286 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2287 case options::OPT_fmath_errno: MathErrno = true; break;
2288 case options::OPT_fno_math_errno: MathErrno = false; break;
2289 case options::OPT_fassociative_math: AssociativeMath = true; break;
2290 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2291 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2292 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2293 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2294 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2295 case options::OPT_ftrapping_math: TrappingMath = true; break;
2296 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2297
2298 case options::OPT_fdenormal_fp_math_EQ:
2299 DenormalFPMath = A->getValue();
2300 break;
2301
2302 // Validate and pass through -fp-contract option.
2303 case options::OPT_ffp_contract: {
2304 StringRef Val = A->getValue();
2305 if (Val == "fast" || Val == "on" || Val == "off")
2306 FPContract = Val;
2307 else
2308 D.Diag(diag::err_drv_unsupported_option_argument)
2309 << A->getOption().getName() << Val;
2310 break;
2311 }
2312
2313 case options::OPT_ffinite_math_only:
2314 HonorINFs = false;
2315 HonorNaNs = false;
2316 break;
2317 case options::OPT_fno_finite_math_only:
2318 HonorINFs = true;
2319 HonorNaNs = true;
2320 break;
2321
2322 case options::OPT_funsafe_math_optimizations:
2323 AssociativeMath = true;
2324 ReciprocalMath = true;
2325 SignedZeros = false;
2326 TrappingMath = false;
2327 break;
2328 case options::OPT_fno_unsafe_math_optimizations:
2329 AssociativeMath = false;
2330 ReciprocalMath = false;
2331 SignedZeros = true;
2332 TrappingMath = true;
2333 // -fno_unsafe_math_optimizations restores default denormal handling
2334 DenormalFPMath = "";
2335 break;
2336
2337 case options::OPT_Ofast:
2338 // If -Ofast is the optimization level, then -ffast-math should be enabled
2339 if (!OFastEnabled)
2340 continue;
2341 LLVM_FALLTHROUGH[[clang::fallthrough]];
2342 case options::OPT_ffast_math:
2343 HonorINFs = false;
2344 HonorNaNs = false;
2345 MathErrno = false;
2346 AssociativeMath = true;
2347 ReciprocalMath = true;
2348 SignedZeros = false;
2349 TrappingMath = false;
2350 // If fast-math is set then set the fp-contract mode to fast.
2351 FPContract = "fast";
2352 break;
2353 case options::OPT_fno_fast_math:
2354 HonorINFs = true;
2355 HonorNaNs = true;
2356 // Turning on -ffast-math (with either flag) removes the need for
2357 // MathErrno. However, turning *off* -ffast-math merely restores the
2358 // toolchain default (which may be false).
2359 MathErrno = TC.IsMathErrnoDefault();
2360 AssociativeMath = false;
2361 ReciprocalMath = false;
2362 SignedZeros = true;
2363 TrappingMath = true;
2364 // -fno_fast_math restores default denormal and fpcontract handling
2365 DenormalFPMath = "";
2366 FPContract = "";
2367 break;
2368 }
2369
2370 // If we handled this option claim it
2371 A->claim();
2372 }
2373
2374 if (!HonorINFs)
2375 CmdArgs.push_back("-menable-no-infs");
2376
2377 if (!HonorNaNs)
2378 CmdArgs.push_back("-menable-no-nans");
2379
2380 if (MathErrno)
2381 CmdArgs.push_back("-fmath-errno");
2382
2383 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2384 !TrappingMath)
2385 CmdArgs.push_back("-menable-unsafe-fp-math");
2386
2387 if (!SignedZeros)
2388 CmdArgs.push_back("-fno-signed-zeros");
2389
2390 if (AssociativeMath && !SignedZeros && !TrappingMath)
2391 CmdArgs.push_back("-mreassociate");
2392
2393 if (ReciprocalMath)
2394 CmdArgs.push_back("-freciprocal-math");
2395
2396 if (!TrappingMath)
2397 CmdArgs.push_back("-fno-trapping-math");
2398
2399 if (!DenormalFPMath.empty())
2400 CmdArgs.push_back(
2401 Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2402
2403 if (!FPContract.empty())
2404 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2405
2406 ParseMRecip(D, Args, CmdArgs);
2407
2408 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2409 // individual features enabled by -ffast-math instead of the option itself as
2410 // that's consistent with gcc's behaviour.
2411 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2412 ReciprocalMath && !SignedZeros && !TrappingMath)
2413 CmdArgs.push_back("-ffast-math");
2414
2415 // Handle __FINITE_MATH_ONLY__ similarly.
2416 if (!HonorINFs && !HonorNaNs)
2417 CmdArgs.push_back("-ffinite-math-only");
2418
2419 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2420 CmdArgs.push_back("-mfpmath");
2421 CmdArgs.push_back(A->getValue());
2422 }
2423
2424 // Disable a codegen optimization for floating-point casts.
2425 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2426 options::OPT_fstrict_float_cast_overflow, false))
2427 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2428}
2429
2430static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2431 const llvm::Triple &Triple,
2432 const InputInfo &Input) {
2433 // Enable region store model by default.
2434 CmdArgs.push_back("-analyzer-store=region");
2435
2436 // Treat blocks as analysis entry points.
2437 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2438
2439 // Add default argument set.
2440 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2441 CmdArgs.push_back("-analyzer-checker=core");
2442 CmdArgs.push_back("-analyzer-checker=apiModeling");
2443
2444 if (!Triple.isWindowsMSVCEnvironment()) {
2445 CmdArgs.push_back("-analyzer-checker=unix");
2446 } else {
2447 // Enable "unix" checkers that also work on Windows.
2448 CmdArgs.push_back("-analyzer-checker=unix.API");
2449 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2450 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2451 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2452 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2453 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2454 }
2455
2456 // Disable some unix checkers for PS4.
2457 if (Triple.isPS4CPU()) {
2458 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2459 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2460 }
2461
2462 if (Triple.isOSDarwin())
2463 CmdArgs.push_back("-analyzer-checker=osx");
2464
2465 CmdArgs.push_back("-analyzer-checker=deadcode");
2466
2467 if (types::isCXX(Input.getType()))
2468 CmdArgs.push_back("-analyzer-checker=cplusplus");
2469
2470 if (!Triple.isPS4CPU()) {
2471 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2472 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2473 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2474 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2475 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2476 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2477 }
2478
2479 // Default nullability checks.
2480 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2481 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2482 }
2483
2484 // Set the output format. The default is plist, for (lame) historical reasons.
2485 CmdArgs.push_back("-analyzer-output");
2486 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2487 CmdArgs.push_back(A->getValue());
2488 else
2489 CmdArgs.push_back("plist");
2490
2491 // Disable the presentation of standard compiler warnings when using
2492 // --analyze. We only want to show static analyzer diagnostics or frontend
2493 // errors.
2494 CmdArgs.push_back("-w");
2495
2496 // Add -Xanalyzer arguments when running as analyzer.
2497 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2498}
2499
2500static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2501 ArgStringList &CmdArgs, bool KernelOrKext) {
2502 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2503
2504 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2505 // doesn't even have a stack!
2506 if (EffectiveTriple.isNVPTX())
2507 return;
2508
2509 // -stack-protector=0 is default.
2510 unsigned StackProtectorLevel = 0;
2511 unsigned DefaultStackProtectorLevel =
2512 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2513
2514 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2515 options::OPT_fstack_protector_all,
2516 options::OPT_fstack_protector_strong,
2517 options::OPT_fstack_protector)) {
2518 if (A->getOption().matches(options::OPT_fstack_protector))
2519 StackProtectorLevel =
2520 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2521 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2522 StackProtectorLevel = LangOptions::SSPStrong;
2523 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2524 StackProtectorLevel = LangOptions::SSPReq;
2525 } else {
2526 StackProtectorLevel = DefaultStackProtectorLevel;
2527 }
2528
2529 if (StackProtectorLevel) {
2530 CmdArgs.push_back("-stack-protector");
2531 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2532 }
2533
2534 // --param ssp-buffer-size=
2535 for (const Arg *A : Args.filtered(options::OPT__param)) {
2536 StringRef Str(A->getValue());
2537 if (Str.startswith("ssp-buffer-size=")) {
2538 if (StackProtectorLevel) {
2539 CmdArgs.push_back("-stack-protector-buffer-size");
2540 // FIXME: Verify the argument is a valid integer.
2541 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2542 }
2543 A->claim();
2544 }
2545 }
2546}
2547
2548static void RenderTrivialAutoVarInitOptions(const Driver &D,
2549 const ToolChain &TC,
2550 const ArgList &Args,
2551 ArgStringList &CmdArgs) {
2552 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2553 StringRef TrivialAutoVarInit = "";
2554
2555 for (const Arg *A : Args) {
2556 switch (A->getOption().getID()) {
2557 default:
2558 continue;
2559 case options::OPT_ftrivial_auto_var_init: {
2560 A->claim();
2561 StringRef Val = A->getValue();
2562 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2563 TrivialAutoVarInit = Val;
2564 else
2565 D.Diag(diag::err_drv_unsupported_option_argument)
2566 << A->getOption().getName() << Val;
2567 break;
2568 }
2569 }
2570 }
2571
2572 if (TrivialAutoVarInit.empty())
2573 switch (DefaultTrivialAutoVarInit) {
2574 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
2575 break;
2576 case LangOptions::TrivialAutoVarInitKind::Pattern:
2577 TrivialAutoVarInit = "pattern";
2578 break;
2579 case LangOptions::TrivialAutoVarInitKind::Zero:
2580 TrivialAutoVarInit = "zero";
2581 break;
2582 }
2583
2584 if (!TrivialAutoVarInit.empty()) {
2585 if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
2586 D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
2587 CmdArgs.push_back(
2588 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
2589 }
2590}
2591
2592static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2593 const unsigned ForwardedArguments[] = {
2594 options::OPT_cl_opt_disable,
2595 options::OPT_cl_strict_aliasing,
2596 options::OPT_cl_single_precision_constant,
2597 options::OPT_cl_finite_math_only,
2598 options::OPT_cl_kernel_arg_info,
2599 options::OPT_cl_unsafe_math_optimizations,
2600 options::OPT_cl_fast_relaxed_math,
2601 options::OPT_cl_mad_enable,
2602 options::OPT_cl_no_signed_zeros,
2603 options::OPT_cl_denorms_are_zero,
2604 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2605 options::OPT_cl_uniform_work_group_size
2606 };
2607
2608 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2609 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2610 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2611 }
2612
2613 for (const auto &Arg : ForwardedArguments)
2614 if (const auto *A = Args.getLastArg(Arg))
2615 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2616}
2617
2618static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2619 ArgStringList &CmdArgs) {
2620 bool ARCMTEnabled = false;
2621 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2622 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2623 options::OPT_ccc_arcmt_modify,
2624 options::OPT_ccc_arcmt_migrate)) {
2625 ARCMTEnabled = true;
2626 switch (A->getOption().getID()) {
2627 default: llvm_unreachable("missed a case")::llvm::llvm_unreachable_internal("missed a case", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 2627)
;
2628 case options::OPT_ccc_arcmt_check:
2629 CmdArgs.push_back("-arcmt-check");
2630 break;
2631 case options::OPT_ccc_arcmt_modify:
2632 CmdArgs.push_back("-arcmt-modify");
2633 break;
2634 case options::OPT_ccc_arcmt_migrate:
2635 CmdArgs.push_back("-arcmt-migrate");
2636 CmdArgs.push_back("-mt-migrate-directory");
2637 CmdArgs.push_back(A->getValue());
2638
2639 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2640 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2641 break;
2642 }
2643 }
2644 } else {
2645 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2646 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2647 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2648 }
2649
2650 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2651 if (ARCMTEnabled)
2652 D.Diag(diag::err_drv_argument_not_allowed_with)
2653 << A->getAsString(Args) << "-ccc-arcmt-migrate";
2654
2655 CmdArgs.push_back("-mt-migrate-directory");
2656 CmdArgs.push_back(A->getValue());
2657
2658 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2659 options::OPT_objcmt_migrate_subscripting,
2660 options::OPT_objcmt_migrate_property)) {
2661 // None specified, means enable them all.
2662 CmdArgs.push_back("-objcmt-migrate-literals");
2663 CmdArgs.push_back("-objcmt-migrate-subscripting");
2664 CmdArgs.push_back("-objcmt-migrate-property");
2665 } else {
2666 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2667 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2668 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2669 }
2670 } else {
2671 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2672 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2673 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2674 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2675 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2676 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2677 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2678 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2679 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2680 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2681 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2682 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2683 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2684 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2685 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2686 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2687 }
2688}
2689
2690static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2691 const ArgList &Args, ArgStringList &CmdArgs) {
2692 // -fbuiltin is default unless -mkernel is used.
2693 bool UseBuiltins =
2694 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2695 !Args.hasArg(options::OPT_mkernel));
2696 if (!UseBuiltins)
2697 CmdArgs.push_back("-fno-builtin");
2698
2699 // -ffreestanding implies -fno-builtin.
2700 if (Args.hasArg(options::OPT_ffreestanding))
2701 UseBuiltins = false;
2702
2703 // Process the -fno-builtin-* options.
2704 for (const auto &Arg : Args) {
2705 const Option &O = Arg->getOption();
2706 if (!O.matches(options::OPT_fno_builtin_))
2707 continue;
2708
2709 Arg->claim();
2710
2711 // If -fno-builtin is specified, then there's no need to pass the option to
2712 // the frontend.
2713 if (!UseBuiltins)
2714 continue;
2715
2716 StringRef FuncName = Arg->getValue();
2717 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2718 }
2719
2720 // le32-specific flags:
2721 // -fno-math-builtin: clang should not convert math builtins to intrinsics
2722 // by default.
2723 if (TC.getArch() == llvm::Triple::le32)
2724 CmdArgs.push_back("-fno-math-builtin");
2725}
2726
2727void Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
2728 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2729 llvm::sys::path::append(Result, "org.llvm.clang.");
2730 appendUserToPath(Result);
2731 llvm::sys::path::append(Result, "ModuleCache");
2732}
2733
2734static void RenderModulesOptions(Compilation &C, const Driver &D,
2735 const ArgList &Args, const InputInfo &Input,
2736 const InputInfo &Output,
2737 ArgStringList &CmdArgs, bool &HaveModules) {
2738 // -fmodules enables the use of precompiled modules (off by default).
2739 // Users can pass -fno-cxx-modules to turn off modules support for
2740 // C++/Objective-C++ programs.
2741 bool HaveClangModules = false;
2742 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2743 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2744 options::OPT_fno_cxx_modules, true);
2745 if (AllowedInCXX || !types::isCXX(Input.getType())) {
2746 CmdArgs.push_back("-fmodules");
2747 HaveClangModules = true;
2748 }
2749 }
2750
2751 HaveModules |= HaveClangModules;
2752 if (Args.hasArg(options::OPT_fmodules_ts)) {
2753 CmdArgs.push_back("-fmodules-ts");
2754 HaveModules = true;
2755 }
2756
2757 // -fmodule-maps enables implicit reading of module map files. By default,
2758 // this is enabled if we are using Clang's flavor of precompiled modules.
2759 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2760 options::OPT_fno_implicit_module_maps, HaveClangModules))
2761 CmdArgs.push_back("-fimplicit-module-maps");
2762
2763 // -fmodules-decluse checks that modules used are declared so (off by default)
2764 if (Args.hasFlag(options::OPT_fmodules_decluse,
2765 options::OPT_fno_modules_decluse, false))
2766 CmdArgs.push_back("-fmodules-decluse");
2767
2768 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2769 // all #included headers are part of modules.
2770 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2771 options::OPT_fno_modules_strict_decluse, false))
2772 CmdArgs.push_back("-fmodules-strict-decluse");
2773
2774 // -fno-implicit-modules turns off implicitly compiling modules on demand.
2775 bool ImplicitModules = false;
2776 if (!Args.hasFlag(options::OPT_fimplicit_modules,
2777 options::OPT_fno_implicit_modules, HaveClangModules)) {
2778 if (HaveModules)
2779 CmdArgs.push_back("-fno-implicit-modules");
2780 } else if (HaveModules) {
2781 ImplicitModules = true;
2782 // -fmodule-cache-path specifies where our implicitly-built module files
2783 // should be written.
2784 SmallString<128> Path;
2785 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2786 Path = A->getValue();
2787
2788 if (C.isForDiagnostics()) {
2789 // When generating crash reports, we want to emit the modules along with
2790 // the reproduction sources, so we ignore any provided module path.
2791 Path = Output.getFilename();
2792 llvm::sys::path::replace_extension(Path, ".cache");
2793 llvm::sys::path::append(Path, "modules");
2794 } else if (Path.empty()) {
2795 // No module path was provided: use the default.
2796 Driver::getDefaultModuleCachePath(Path);
2797 }
2798
2799 const char Arg[] = "-fmodules-cache-path=";
2800 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2801 CmdArgs.push_back(Args.MakeArgString(Path));
2802 }
2803
2804 if (HaveModules) {
2805 // -fprebuilt-module-path specifies where to load the prebuilt module files.
2806 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2807 CmdArgs.push_back(Args.MakeArgString(
2808 std::string("-fprebuilt-module-path=") + A->getValue()));
2809 A->claim();
2810 }
2811 }
2812
2813 // -fmodule-name specifies the module that is currently being built (or
2814 // used for header checking by -fmodule-maps).
2815 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2816
2817 // -fmodule-map-file can be used to specify files containing module
2818 // definitions.
2819 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2820
2821 // -fbuiltin-module-map can be used to load the clang
2822 // builtin headers modulemap file.
2823 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2824 SmallString<128> BuiltinModuleMap(D.ResourceDir);
2825 llvm::sys::path::append(BuiltinModuleMap, "include");
2826 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2827 if (llvm::sys::fs::exists(BuiltinModuleMap))
2828 CmdArgs.push_back(
2829 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2830 }
2831
2832 // The -fmodule-file=<name>=<file> form specifies the mapping of module
2833 // names to precompiled module files (the module is loaded only if used).
2834 // The -fmodule-file=<file> form can be used to unconditionally load
2835 // precompiled module files (whether used or not).
2836 if (HaveModules)
2837 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2838 else
2839 Args.ClaimAllArgs(options::OPT_fmodule_file);
2840
2841 // When building modules and generating crashdumps, we need to dump a module
2842 // dependency VFS alongside the output.
2843 if (HaveClangModules && C.isForDiagnostics()) {
2844 SmallString<128> VFSDir(Output.getFilename());
2845 llvm::sys::path::replace_extension(VFSDir, ".cache");
2846 // Add the cache directory as a temp so the crash diagnostics pick it up.
2847 C.addTempFile(Args.MakeArgString(VFSDir));
2848
2849 llvm::sys::path::append(VFSDir, "vfs");
2850 CmdArgs.push_back("-module-dependency-dir");
2851 CmdArgs.push_back(Args.MakeArgString(VFSDir));
2852 }
2853
2854 if (HaveClangModules)
2855 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2856
2857 // Pass through all -fmodules-ignore-macro arguments.
2858 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2859 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2860 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2861
2862 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2863
2864 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2865 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2866 D.Diag(diag::err_drv_argument_not_allowed_with)
2867 << A->getAsString(Args) << "-fbuild-session-timestamp";
2868
2869 llvm::sys::fs::file_status Status;
2870 if (llvm::sys::fs::status(A->getValue(), Status))
2871 D.Diag(diag::err_drv_no_such_file) << A->getValue();
2872 CmdArgs.push_back(
2873 Args.MakeArgString("-fbuild-session-timestamp=" +
2874 Twine((uint64_t)Status.getLastModificationTime()
2875 .time_since_epoch()
2876 .count())));
2877 }
2878
2879 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2880 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2881 options::OPT_fbuild_session_file))
2882 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2883
2884 Args.AddLastArg(CmdArgs,
2885 options::OPT_fmodules_validate_once_per_build_session);
2886 }
2887
2888 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2889 options::OPT_fno_modules_validate_system_headers,
2890 ImplicitModules))
2891 CmdArgs.push_back("-fmodules-validate-system-headers");
2892
2893 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2894}
2895
2896static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2897 ArgStringList &CmdArgs) {
2898 // -fsigned-char is default.
2899 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2900 options::OPT_fno_signed_char,
2901 options::OPT_funsigned_char,
2902 options::OPT_fno_unsigned_char)) {
2903 if (A->getOption().matches(options::OPT_funsigned_char) ||
2904 A->getOption().matches(options::OPT_fno_signed_char)) {
2905 CmdArgs.push_back("-fno-signed-char");
2906 }
2907 } else if (!isSignedCharDefault(T)) {
2908 CmdArgs.push_back("-fno-signed-char");
2909 }
2910
2911 // The default depends on the language standard.
2912 if (const Arg *A =
2913 Args.getLastArg(options::OPT_fchar8__t, options::OPT_fno_char8__t))
2914 A->render(Args, CmdArgs);
2915
2916 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2917 options::OPT_fno_short_wchar)) {
2918 if (A->getOption().matches(options::OPT_fshort_wchar)) {
2919 CmdArgs.push_back("-fwchar-type=short");
2920 CmdArgs.push_back("-fno-signed-wchar");
2921 } else {
2922 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2923 CmdArgs.push_back("-fwchar-type=int");
2924 if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
2925 T.isOSOpenBSD()))
2926 CmdArgs.push_back("-fno-signed-wchar");
2927 else
2928 CmdArgs.push_back("-fsigned-wchar");
2929 }
2930 }
2931}
2932
2933static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2934 const llvm::Triple &T, const ArgList &Args,
2935 ObjCRuntime &Runtime, bool InferCovariantReturns,
2936 const InputInfo &Input, ArgStringList &CmdArgs) {
2937 const llvm::Triple::ArchType Arch = TC.getArch();
2938
2939 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2940 // is the default. Except for deployment target of 10.5, next runtime is
2941 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2942 if (Runtime.isNonFragile()) {
2943 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2944 options::OPT_fno_objc_legacy_dispatch,
2945 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2946 if (TC.UseObjCMixedDispatch())
2947 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2948 else
2949 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2950 }
2951 }
2952
2953 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2954 // to do Array/Dictionary subscripting by default.
2955 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2956 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2957 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2958
2959 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2960 // NOTE: This logic is duplicated in ToolChains.cpp.
2961 if (isObjCAutoRefCount(Args)) {
2962 TC.CheckObjCARC();
2963
2964 CmdArgs.push_back("-fobjc-arc");
2965
2966 // FIXME: It seems like this entire block, and several around it should be
2967 // wrapped in isObjC, but for now we just use it here as this is where it
2968 // was being used previously.
2969 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2970 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2971 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2972 else
2973 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2974 }
2975
2976 // Allow the user to enable full exceptions code emission.
2977 // We default off for Objective-C, on for Objective-C++.
2978 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2979 options::OPT_fno_objc_arc_exceptions,
2980 /*default=*/types::isCXX(Input.getType())))
2981 CmdArgs.push_back("-fobjc-arc-exceptions");
2982 }
2983
2984 // Silence warning for full exception code emission options when explicitly
2985 // set to use no ARC.
2986 if (Args.hasArg(options::OPT_fno_objc_arc)) {
2987 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2988 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2989 }
2990
2991 // Allow the user to control whether messages can be converted to runtime
2992 // functions.
2993 if (types::isObjC(Input.getType())) {
2994 auto *Arg = Args.getLastArg(
2995 options::OPT_fobjc_convert_messages_to_runtime_calls,
2996 options::OPT_fno_objc_convert_messages_to_runtime_calls);
2997 if (Arg &&
2998 Arg->getOption().matches(
2999 options::OPT_fno_objc_convert_messages_to_runtime_calls))
3000 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
3001 }
3002
3003 // -fobjc-infer-related-result-type is the default, except in the Objective-C
3004 // rewriter.
3005 if (InferCovariantReturns)
3006 CmdArgs.push_back("-fno-objc-infer-related-result-type");
3007
3008 // Pass down -fobjc-weak or -fno-objc-weak if present.
3009 if (types::isObjC(Input.getType())) {
3010 auto WeakArg =
3011 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
3012 if (!WeakArg) {
3013 // nothing to do
3014 } else if (!Runtime.allowsWeak()) {
3015 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3016 D.Diag(diag::err_objc_weak_unsupported);
3017 } else {
3018 WeakArg->render(Args, CmdArgs);
3019 }
3020 }
3021}
3022
3023static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
3024 ArgStringList &CmdArgs) {
3025 bool CaretDefault = true;
3026 bool ColumnDefault = true;
3027
3028 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
3029 options::OPT__SLASH_diagnostics_column,
3030 options::OPT__SLASH_diagnostics_caret)) {
3031 switch (A->getOption().getID()) {
3032 case options::OPT__SLASH_diagnostics_caret:
3033 CaretDefault = true;
3034 ColumnDefault = true;
3035 break;
3036 case options::OPT__SLASH_diagnostics_column:
3037 CaretDefault = false;
3038 ColumnDefault = true;
3039 break;
3040 case options::OPT__SLASH_diagnostics_classic:
3041 CaretDefault = false;
3042 ColumnDefault = false;
3043 break;
3044 }
3045 }
3046
3047 // -fcaret-diagnostics is default.
3048 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3049 options::OPT_fno_caret_diagnostics, CaretDefault))
3050 CmdArgs.push_back("-fno-caret-diagnostics");
3051
3052 // -fdiagnostics-fixit-info is default, only pass non-default.
3053 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3054 options::OPT_fno_diagnostics_fixit_info))
3055 CmdArgs.push_back("-fno-diagnostics-fixit-info");
3056
3057 // Enable -fdiagnostics-show-option by default.
3058 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
3059 options::OPT_fno_diagnostics_show_option))
3060 CmdArgs.push_back("-fdiagnostics-show-option");
3061
3062 if (const Arg *A =
3063 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
3064 CmdArgs.push_back("-fdiagnostics-show-category");
3065 CmdArgs.push_back(A->getValue());
3066 }
3067
3068 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
3069 options::OPT_fno_diagnostics_show_hotness, false))
3070 CmdArgs.push_back("-fdiagnostics-show-hotness");
3071
3072 if (const Arg *A =
3073 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3074 std::string Opt =
3075 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3076 CmdArgs.push_back(Args.MakeArgString(Opt));
3077 }
3078
3079 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3080 CmdArgs.push_back("-fdiagnostics-format");
3081 CmdArgs.push_back(A->getValue());
3082 }
3083
3084 if (const Arg *A = Args.getLastArg(
3085 options::OPT_fdiagnostics_show_note_include_stack,
3086 options::OPT_fno_diagnostics_show_note_include_stack)) {
3087 const Option &O = A->getOption();
3088 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3089 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3090 else
3091 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3092 }
3093
3094 // Color diagnostics are parsed by the driver directly from argv and later
3095 // re-parsed to construct this job; claim any possible color diagnostic here
3096 // to avoid warn_drv_unused_argument and diagnose bad
3097 // OPT_fdiagnostics_color_EQ values.
3098 for (const Arg *A : Args) {
3099 const Option &O = A->getOption();
3100 if (!O.matches(options::OPT_fcolor_diagnostics) &&
3101 !O.matches(options::OPT_fdiagnostics_color) &&
3102 !O.matches(options::OPT_fno_color_diagnostics) &&
3103 !O.matches(options::OPT_fno_diagnostics_color) &&
3104 !O.matches(options::OPT_fdiagnostics_color_EQ))
3105 continue;
3106
3107 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3108 StringRef Value(A->getValue());
3109 if (Value != "always" && Value != "never" && Value != "auto")
3110 D.Diag(diag::err_drv_clang_unsupported)
3111 << ("-fdiagnostics-color=" + Value).str();
3112 }
3113 A->claim();
3114 }
3115
3116 if (D.getDiags().getDiagnosticOptions().ShowColors)
3117 CmdArgs.push_back("-fcolor-diagnostics");
3118
3119 if (Args.hasArg(options::OPT_fansi_escape_codes))
3120 CmdArgs.push_back("-fansi-escape-codes");
3121
3122 if (!Args.hasFlag(options::OPT_fshow_source_location,
3123 options::OPT_fno_show_source_location))
3124 CmdArgs.push_back("-fno-show-source-location");
3125
3126 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3127 CmdArgs.push_back("-fdiagnostics-absolute-paths");
3128
3129 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3130 ColumnDefault))
3131 CmdArgs.push_back("-fno-show-column");
3132
3133 if (!Args.hasFlag(options::OPT_fspell_checking,
3134 options::OPT_fno_spell_checking))
3135 CmdArgs.push_back("-fno-spell-checking");
3136}
3137
3138enum class DwarfFissionKind { None, Split, Single };
3139
3140static DwarfFissionKind getDebugFissionKind(const Driver &D,
3141 const ArgList &Args, Arg *&Arg) {
3142 Arg =
3143 Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3144 if (!Arg)
3145 return DwarfFissionKind::None;
3146
3147 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3148 return DwarfFissionKind::Split;
3149
3150 StringRef Value = Arg->getValue();
3151 if (Value == "split")
3152 return DwarfFissionKind::Split;
3153 if (Value == "single")
3154 return DwarfFissionKind::Single;
3155
3156 D.Diag(diag::err_drv_unsupported_option_argument)
3157 << Arg->getOption().getName() << Arg->getValue();
3158 return DwarfFissionKind::None;
3159}
3160
3161static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3162 const llvm::Triple &T, const ArgList &Args,
3163 bool EmitCodeView, bool IsWindowsMSVC,
3164 ArgStringList &CmdArgs,
3165 codegenoptions::DebugInfoKind &DebugInfoKind,
3166 DwarfFissionKind &DwarfFission) {
3167 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3168 options::OPT_fno_debug_info_for_profiling, false) &&
3169 checkDebugInfoOption(
3170 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3171 CmdArgs.push_back("-fdebug-info-for-profiling");
3172
3173 // The 'g' groups options involve a somewhat intricate sequence of decisions
3174 // about what to pass from the driver to the frontend, but by the time they
3175 // reach cc1 they've been factored into three well-defined orthogonal choices:
3176 // * what level of debug info to generate
3177 // * what dwarf version to write
3178 // * what debugger tuning to use
3179 // This avoids having to monkey around further in cc1 other than to disable
3180 // codeview if not running in a Windows environment. Perhaps even that
3181 // decision should be made in the driver as well though.
3182 unsigned DWARFVersion = 0;
3183 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3184
3185 bool SplitDWARFInlining =
3186 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3187 options::OPT_fno_split_dwarf_inlining, true);
3188
3189 Args.ClaimAllArgs(options::OPT_g_Group);
3190
3191 Arg* SplitDWARFArg;
3192 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3193
3194 if (DwarfFission != DwarfFissionKind::None &&
3195 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3196 DwarfFission = DwarfFissionKind::None;
3197 SplitDWARFInlining = false;
3198 }
3199
3200 if (const Arg *A =
3201 Args.getLastArg(options::OPT_g_Group, options::OPT_gsplit_dwarf,
3202 options::OPT_gsplit_dwarf_EQ)) {
3203 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3204
3205 // If the last option explicitly specified a debug-info level, use it.
3206 if (checkDebugInfoOption(A, Args, D, TC) &&
3207 A->getOption().matches(options::OPT_gN_Group)) {
3208 DebugInfoKind = DebugLevelToInfoKind(*A);
3209 // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
3210 // complicated if you've disabled inline info in the skeleton CUs
3211 // (SplitDWARFInlining) - then there's value in composing split-dwarf and
3212 // line-tables-only, so let those compose naturally in that case.
3213 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3214 DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3215 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3216 SplitDWARFInlining))
3217 DwarfFission = DwarfFissionKind::None;
3218 }
3219 }
3220
3221 // If a debugger tuning argument appeared, remember it.
3222 if (const Arg *A =
3223 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3224 if (checkDebugInfoOption(A, Args, D, TC)) {
3225 if (A->getOption().matches(options::OPT_glldb))
3226 DebuggerTuning = llvm::DebuggerKind::LLDB;
3227 else if (A->getOption().matches(options::OPT_gsce))
3228 DebuggerTuning = llvm::DebuggerKind::SCE;
3229 else
3230 DebuggerTuning = llvm::DebuggerKind::GDB;
3231 }
3232 }
3233
3234 // If a -gdwarf argument appeared, remember it.
3235 if (const Arg *A =
3236 Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
3237 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
3238 if (checkDebugInfoOption(A, Args, D, TC))
3239 DWARFVersion = DwarfVersionNum(A->getSpelling());
3240
3241 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3242 if (checkDebugInfoOption(A, Args, D, TC))
3243 EmitCodeView = true;
3244 }
3245
3246 // If the user asked for debug info but did not explicitly specify -gcodeview
3247 // or -gdwarf, ask the toolchain for the default format.
3248 if (!EmitCodeView && DWARFVersion == 0 &&
3249 DebugInfoKind != codegenoptions::NoDebugInfo) {
3250 switch (TC.getDefaultDebugFormat()) {
3251 case codegenoptions::DIF_CodeView:
3252 EmitCodeView = true;
3253 break;
3254 case codegenoptions::DIF_DWARF:
3255 DWARFVersion = TC.GetDefaultDwarfVersion();
3256 break;
3257 }
3258 }
3259
3260 // -gline-directives-only supported only for the DWARF debug info.
3261 if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3262 DebugInfoKind = codegenoptions::NoDebugInfo;
3263
3264 // We ignore flag -gstrict-dwarf for now.
3265 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3266 Args.ClaimAllArgs(options::OPT_g_flags_Group);
3267
3268 // Column info is included by default for everything except SCE and
3269 // CodeView. Clang doesn't track end columns, just starting columns, which,
3270 // in theory, is fine for CodeView (and PDB). In practice, however, the
3271 // Microsoft debuggers don't handle missing end columns well, so it's better
3272 // not to include any column info.
3273 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3274 (void)checkDebugInfoOption(A, Args, D, TC);
3275 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3276 /*Default=*/!EmitCodeView &&
3277 DebuggerTuning != llvm::DebuggerKind::SCE))
3278 CmdArgs.push_back("-dwarf-column-info");
3279
3280 // FIXME: Move backend command line options to the module.
3281 // If -gline-tables-only or -gline-directives-only is the last option it wins.
3282 if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3283 if (checkDebugInfoOption(A, Args, D, TC)) {
3284 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3285 DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3286 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3287 CmdArgs.push_back("-dwarf-ext-refs");
3288 CmdArgs.push_back("-fmodule-format=obj");
3289 }
3290 }
3291
3292 // -gsplit-dwarf enables the backend dwarf splitting and extraction.
3293 if (T.isOSBinFormatELF()) {
3294 if (!SplitDWARFInlining)
3295 CmdArgs.push_back("-fno-split-dwarf-inlining");
3296
3297 if (DwarfFission != DwarfFissionKind::None) {
3298 if (DwarfFission == DwarfFissionKind::Single)
3299 CmdArgs.push_back("-enable-split-dwarf=single");
3300 else
3301 CmdArgs.push_back("-enable-split-dwarf");
3302 }
3303 }
3304
3305 // After we've dealt with all combinations of things that could
3306 // make DebugInfoKind be other than None or DebugLineTablesOnly,
3307 // figure out if we need to "upgrade" it to standalone debug info.
3308 // We parse these two '-f' options whether or not they will be used,
3309 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3310 bool NeedFullDebug = Args.hasFlag(
3311 options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
3312 DebuggerTuning == llvm::DebuggerKind::LLDB ||
3313 TC.GetDefaultStandaloneDebug());
3314 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3315 (void)checkDebugInfoOption(A, Args, D, TC);
3316 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3317 DebugInfoKind = codegenoptions::FullDebugInfo;
3318
3319 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3320 false)) {
3321 // Source embedding is a vendor extension to DWARF v5. By now we have
3322 // checked if a DWARF version was stated explicitly, and have otherwise
3323 // fallen back to the target default, so if this is still not at least 5
3324 // we emit an error.
3325 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3326 if (DWARFVersion < 5)
3327 D.Diag(diag::err_drv_argument_only_allowed_with)
3328 << A->getAsString(Args) << "-gdwarf-5";
3329 else if (checkDebugInfoOption(A, Args, D, TC))
3330 CmdArgs.push_back("-gembed-source");
3331 }
3332
3333 if (EmitCodeView) {
3334 CmdArgs.push_back("-gcodeview");
3335
3336 // Emit codeview type hashes if requested.
3337 if (Args.hasFlag(options::OPT_gcodeview_ghash,
3338 options::OPT_gno_codeview_ghash, false)) {
3339 CmdArgs.push_back("-gcodeview-ghash");
3340 }
3341 }
3342
3343 // Adjust the debug info kind for the given toolchain.
3344 TC.adjustDebugInfoKind(DebugInfoKind, Args);
3345
3346 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3347 DebuggerTuning);
3348
3349 // -fdebug-macro turns on macro debug info generation.
3350 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3351 false))
3352 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3353 D, TC))
3354 CmdArgs.push_back("-debug-info-macro");
3355
3356 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3357 const auto *PubnamesArg =
3358 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3359 options::OPT_gpubnames, options::OPT_gno_pubnames);
3360 if (DwarfFission != DwarfFissionKind::None ||
3361 DebuggerTuning == llvm::DebuggerKind::LLDB ||
3362 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3363 if (!PubnamesArg ||
3364 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3365 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3366 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3367 options::OPT_gpubnames)
3368 ? "-gpubnames"
3369 : "-ggnu-pubnames");
3370
3371 if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3372 options::OPT_fno_debug_ranges_base_address, false)) {
3373 CmdArgs.push_back("-fdebug-ranges-base-address");
3374 }
3375
3376 // -gdwarf-aranges turns on the emission of the aranges section in the
3377 // backend.
3378 // Always enabled for SCE tuning.
3379 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3380 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3381 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3382 if (NeedAranges) {
3383 CmdArgs.push_back("-mllvm");
3384 CmdArgs.push_back("-generate-arange-section");
3385 }
3386
3387 if (Args.hasFlag(options::OPT_fdebug_types_section,
3388 options::OPT_fno_debug_types_section, false)) {
3389 if (!T.isOSBinFormatELF()) {
3390 D.Diag(diag::err_drv_unsupported_opt_for_target)
3391 << Args.getLastArg(options::OPT_fdebug_types_section)
3392 ->getAsString(Args)
3393 << T.getTriple();
3394 } else if (checkDebugInfoOption(
3395 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3396 TC)) {
3397 CmdArgs.push_back("-mllvm");
3398 CmdArgs.push_back("-generate-type-units");
3399 }
3400 }
3401
3402 // Decide how to render forward declarations of template instantiations.
3403 // SCE wants full descriptions, others just get them in the name.
3404 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3405 CmdArgs.push_back("-debug-forward-template-params");
3406
3407 // Do we need to explicitly import anonymous namespaces into the parent
3408 // scope?
3409 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3410 CmdArgs.push_back("-dwarf-explicit-import");
3411
3412 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3413}
3414
3415void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3416 const InputInfo &Output, const InputInfoList &Inputs,
3417 const ArgList &Args, const char *LinkingOutput) const {
3418 const auto &TC = getToolChain();
3419 const llvm::Triple &RawTriple = TC.getTriple();
3420 const llvm::Triple &Triple = TC.getEffectiveTriple();
3421 const std::string &TripleStr = Triple.getTriple();
3422
3423 bool KernelOrKext =
3424 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3425 const Driver &D = TC.getDriver();
3426 ArgStringList CmdArgs;
3427
3428 // Check number of inputs for sanity. We need at least one input.
3429 assert(Inputs.size() >= 1 && "Must have at least one input.")((Inputs.size() >= 1 && "Must have at least one input."
) ? static_cast<void> (0) : __assert_fail ("Inputs.size() >= 1 && \"Must have at least one input.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3429, __PRETTY_FUNCTION__))
;
3430 // CUDA/HIP compilation may have multiple inputs (source file + results of
3431 // device-side compilations). OpenMP device jobs also take the host IR as a
3432 // second input. Module precompilation accepts a list of header files to
3433 // include as part of the module. All other jobs are expected to have exactly
3434 // one input.
3435 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3436 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3437 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3438 bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3439
3440 // A header module compilation doesn't have a main input file, so invent a
3441 // fake one as a placeholder.
3442 const char *ModuleName = [&]{
3443 auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3444 return ModuleNameArg ? ModuleNameArg->getValue() : "";
3445 }();
3446 InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3447
3448 const InputInfo &Input =
3449 IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3450
3451 InputInfoList ModuleHeaderInputs;
3452 const InputInfo *CudaDeviceInput = nullptr;
3453 const InputInfo *OpenMPDeviceInput = nullptr;
3454 for (const InputInfo &I : Inputs) {
3455 if (&I == &Input) {
3456 // This is the primary input.
3457 } else if (IsHeaderModulePrecompile &&
3458 types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3459 types::ID Expected = HeaderModuleInput.getType();
3460 if (I.getType() != Expected) {
3461 D.Diag(diag::err_drv_module_header_wrong_kind)
3462 << I.getFilename() << types::getTypeName(I.getType())
3463 << types::getTypeName(Expected);
3464 }
3465 ModuleHeaderInputs.push_back(I);
3466 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3467 CudaDeviceInput = &I;
3468 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3469 OpenMPDeviceInput = &I;
3470 } else {
3471 llvm_unreachable("unexpectedly given multiple inputs")::llvm::llvm_unreachable_internal("unexpectedly given multiple inputs"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3471)
;
3472 }
3473 }
3474
3475 const llvm::Triple *AuxTriple = IsCuda ? TC.getAuxTriple() : nullptr;
3476 bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3477 bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3478 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3479 bool IsIAMCU = RawTriple.isOSIAMCU();
3480
3481 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3482 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3483 // Windows), we need to pass Windows-specific flags to cc1.
3484 if (IsCuda || IsHIP) {
3485 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3486 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3487 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
Value stored to 'IsWindowsCygnus' is never read
3488 }
3489
3490 // C++ is not supported for IAMCU.
3491 if (IsIAMCU && types::isCXX(Input.getType()))
3492 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3493
3494 // Invoke ourselves in -cc1 mode.
3495 //
3496 // FIXME: Implement custom jobs for internal actions.
3497 CmdArgs.push_back("-cc1");
3498
3499 // Add the "effective" target triple.
3500 CmdArgs.push_back("-triple");
3501 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3502
3503 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3504 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3505 Args.ClaimAllArgs(options::OPT_MJ);
3506 }
3507
3508 if (IsCuda || IsHIP) {
3509 // We have to pass the triple of the host if compiling for a CUDA/HIP device
3510 // and vice-versa.
3511 std::string NormalizedTriple;
3512 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
3513 JA.isDeviceOffloading(Action::OFK_HIP))
3514 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3515 ->getTriple()
3516 .normalize();
3517 else {
3518 // Host-side compilation.
3519 NormalizedTriple =
3520 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3521 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
3522 ->getTriple()
3523 .normalize();
3524 if (IsCuda) {
3525 // We need to figure out which CUDA version we're compiling for, as that
3526 // determines how we load and launch GPU kernels.
3527 auto *CTC = static_cast<const toolchains::CudaToolChain *>(
3528 C.getSingleOffloadToolChain<Action::OFK_Cuda>());
3529 assert(CTC && "Expected valid CUDA Toolchain.")((CTC && "Expected valid CUDA Toolchain.") ? static_cast
<void> (0) : __assert_fail ("CTC && \"Expected valid CUDA Toolchain.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3529, __PRETTY_FUNCTION__))
;
3530 if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
3531 CmdArgs.push_back(Args.MakeArgString(
3532 Twine("-target-sdk-version=") +
3533 CudaVersionToString(CTC->CudaInstallation.version())));
3534 }
3535 }
3536 CmdArgs.push_back("-aux-triple");
3537 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3538 }
3539
3540 if (IsOpenMPDevice) {
3541 // We have to pass the triple of the host if compiling for an OpenMP device.
3542 std::string NormalizedTriple =
3543 C.getSingleOffloadToolChain<Action::OFK_Host>()
3544 ->getTriple()
3545 .normalize();
3546 CmdArgs.push_back("-aux-triple");
3547 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3548 }
3549
3550 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3551 Triple.getArch() == llvm::Triple::thumb)) {
3552 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3553 unsigned Version;
3554 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3555 if (Version < 7)
3556 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3557 << TripleStr;
3558 }
3559
3560 // Push all default warning arguments that are specific to
3561 // the given target. These come before user provided warning options
3562 // are provided.
3563 TC.addClangWarningOptions(CmdArgs);
3564
3565 // Select the appropriate action.
3566 RewriteKind rewriteKind = RK_None;
3567
3568 if (isa<AnalyzeJobAction>(JA)) {
3569 assert(JA.getType() == types::TY_Plist && "Invalid output type.")((JA.getType() == types::TY_Plist && "Invalid output type."
) ? static_cast<void> (0) : __assert_fail ("JA.getType() == types::TY_Plist && \"Invalid output type.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3569, __PRETTY_FUNCTION__))
;
3570 CmdArgs.push_back("-analyze");
3571 } else if (isa<MigrateJobAction>(JA)) {
3572 CmdArgs.push_back("-migrate");
3573 } else if (isa<PreprocessJobAction>(JA)) {
3574 if (Output.getType() == types::TY_Dependencies)
3575 CmdArgs.push_back("-Eonly");
3576 else {
3577 CmdArgs.push_back("-E");
3578 if (Args.hasArg(options::OPT_rewrite_objc) &&
3579 !Args.hasArg(options::OPT_g_Group))
3580 CmdArgs.push_back("-P");
3581 }
3582 } else if (isa<AssembleJobAction>(JA)) {
3583 CmdArgs.push_back("-emit-obj");
3584
3585 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3586
3587 // Also ignore explicit -force_cpusubtype_ALL option.
3588 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3589 } else if (isa<PrecompileJobAction>(JA)) {
3590 if (JA.getType() == types::TY_Nothing)
3591 CmdArgs.push_back("-fsyntax-only");
3592 else if (JA.getType() == types::TY_ModuleFile)
3593 CmdArgs.push_back(IsHeaderModulePrecompile
3594 ? "-emit-header-module"
3595 : "-emit-module-interface");
3596 else
3597 CmdArgs.push_back("-emit-pch");
3598 } else if (isa<VerifyPCHJobAction>(JA)) {
3599 CmdArgs.push_back("-verify-pch");
3600 } else {
3601 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&(((isa<CompileJobAction>(JA) || isa<BackendJobAction
>(JA)) && "Invalid action for clang tool.") ? static_cast
<void> (0) : __assert_fail ("(isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) && \"Invalid action for clang tool.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3602, __PRETTY_FUNCTION__))
3602 "Invalid action for clang tool.")(((isa<CompileJobAction>(JA) || isa<BackendJobAction
>(JA)) && "Invalid action for clang tool.") ? static_cast
<void> (0) : __assert_fail ("(isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) && \"Invalid action for clang tool.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3602, __PRETTY_FUNCTION__))
;
3603 if (JA.getType() == types::TY_Nothing) {
3604 CmdArgs.push_back("-fsyntax-only");
3605 } else if (JA.getType() == types::TY_LLVM_IR ||
3606 JA.getType() == types::TY_LTO_IR) {
3607 CmdArgs.push_back("-emit-llvm");
3608 } else if (JA.getType() == types::TY_LLVM_BC ||
3609 JA.getType() == types::TY_LTO_BC) {
3610 CmdArgs.push_back("-emit-llvm-bc");
3611 } else if (JA.getType() == types::TY_PP_Asm) {
3612 CmdArgs.push_back("-S");
3613 } else if (JA.getType() == types::TY_AST) {
3614 CmdArgs.push_back("-emit-pch");
3615 } else if (JA.getType() == types::TY_ModuleFile) {
3616 CmdArgs.push_back("-module-file-info");
3617 } else if (JA.getType() == types::TY_RewrittenObjC) {
3618 CmdArgs.push_back("-rewrite-objc");
3619 rewriteKind = RK_NonFragile;
3620 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3621 CmdArgs.push_back("-rewrite-objc");
3622 rewriteKind = RK_Fragile;
3623 } else {
3624 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!")((JA.getType() == types::TY_PP_Asm && "Unexpected output type!"
) ? static_cast<void> (0) : __assert_fail ("JA.getType() == types::TY_PP_Asm && \"Unexpected output type!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3624, __PRETTY_FUNCTION__))
;
3625 }
3626
3627 // Preserve use-list order by default when emitting bitcode, so that
3628 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3629 // same result as running passes here. For LTO, we don't need to preserve
3630 // the use-list order, since serialization to bitcode is part of the flow.
3631 if (JA.getType() == types::TY_LLVM_BC)
3632 CmdArgs.push_back("-emit-llvm-uselists");
3633
3634 // Device-side jobs do not support LTO.
3635 bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3636 JA.isDeviceOffloading(Action::OFK_Host));
3637
3638 if (D.isUsingLTO() && !isDeviceOffloadAction) {
3639 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3640
3641 // The Darwin and PS4 linkers currently use the legacy LTO API, which
3642 // does not support LTO unit features (CFI, whole program vtable opt)
3643 // under ThinLTO.
3644 if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3645 D.getLTOMode() == LTOK_Full)
3646 CmdArgs.push_back("-flto-unit");
3647 }
3648 }
3649
3650 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3651 if (!types::isLLVMIR(Input.getType()))
3652 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3653 << "-x ir";
3654 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3655 }
3656
3657 if (Args.getLastArg(options::OPT_save_temps_EQ))
3658 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3659
3660 // Embed-bitcode option.
3661 // Only white-listed flags below are allowed to be embedded.
3662 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3663 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3664 // Add flags implied by -fembed-bitcode.
3665 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3666 // Disable all llvm IR level optimizations.
3667 CmdArgs.push_back("-disable-llvm-passes");
3668
3669 // Render target options such as -fuse-init-array on modern ELF platforms.
3670 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
3671
3672 // reject options that shouldn't be supported in bitcode
3673 // also reject kernel/kext
3674 static const constexpr unsigned kBitcodeOptionBlacklist[] = {
3675 options::OPT_mkernel,
3676 options::OPT_fapple_kext,
3677 options::OPT_ffunction_sections,
3678 options::OPT_fno_function_sections,
3679 options::OPT_fdata_sections,
3680 options::OPT_fno_data_sections,
3681 options::OPT_funique_section_names,
3682 options::OPT_fno_unique_section_names,
3683 options::OPT_mrestrict_it,
3684 options::OPT_mno_restrict_it,
3685 options::OPT_mstackrealign,
3686 options::OPT_mno_stackrealign,
3687 options::OPT_mstack_alignment,
3688 options::OPT_mcmodel_EQ,
3689 options::OPT_mlong_calls,
3690 options::OPT_mno_long_calls,
3691 options::OPT_ggnu_pubnames,
3692 options::OPT_gdwarf_aranges,
3693 options::OPT_fdebug_types_section,
3694 options::OPT_fno_debug_types_section,
3695 options::OPT_fdwarf_directory_asm,
3696 options::OPT_fno_dwarf_directory_asm,
3697 options::OPT_mrelax_all,
3698 options::OPT_mno_relax_all,
3699 options::OPT_ftrap_function_EQ,
3700 options::OPT_ffixed_r9,
3701 options::OPT_mfix_cortex_a53_835769,
3702 options::OPT_mno_fix_cortex_a53_835769,
3703 options::OPT_ffixed_x18,
3704 options::OPT_mglobal_merge,
3705 options::OPT_mno_global_merge,
3706 options::OPT_mred_zone,
3707 options::OPT_mno_red_zone,
3708 options::OPT_Wa_COMMA,
3709 options::OPT_Xassembler,
3710 options::OPT_mllvm,
3711 };
3712 for (const auto &A : Args)
3713 if (llvm::find(kBitcodeOptionBlacklist, A->getOption().getID()) !=
3714 std::end(kBitcodeOptionBlacklist))
3715 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
3716
3717 // Render the CodeGen options that need to be passed.
3718 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3719 options::OPT_fno_optimize_sibling_calls))
3720 CmdArgs.push_back("-mdisable-tail-calls");
3721
3722 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
3723 CmdArgs);
3724
3725 // Render ABI arguments
3726 switch (TC.getArch()) {
3727 default: break;
3728 case llvm::Triple::arm:
3729 case llvm::Triple::armeb:
3730 case llvm::Triple::thumbeb:
3731 RenderARMABI(Triple, Args, CmdArgs);
3732 break;
3733 case llvm::Triple::aarch64:
3734 case llvm::Triple::aarch64_be:
3735 RenderAArch64ABI(Triple, Args, CmdArgs);
3736 break;
3737 }
3738
3739 // Optimization level for CodeGen.
3740 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3741 if (A->getOption().matches(options::OPT_O4)) {
3742 CmdArgs.push_back("-O3");
3743 D.Diag(diag::warn_O4_is_O3);
3744 } else {
3745 A->render(Args, CmdArgs);
3746 }
3747 }
3748
3749 // Input/Output file.
3750 if (Output.getType() == types::TY_Dependencies) {
3751 // Handled with other dependency code.
3752 } else if (Output.isFilename()) {
3753 CmdArgs.push_back("-o");
3754 CmdArgs.push_back(Output.getFilename());
3755 } else {
3756 assert(Output.isNothing() && "Input output.")((Output.isNothing() && "Input output.") ? static_cast
<void> (0) : __assert_fail ("Output.isNothing() && \"Input output.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3756, __PRETTY_FUNCTION__))
;
3757 }
3758
3759 for (const auto &II : Inputs) {
3760 addDashXForInput(Args, II, CmdArgs);
3761 if (II.isFilename())
3762 CmdArgs.push_back(II.getFilename());
3763 else
3764 II.getInputArg().renderAsInput(Args, CmdArgs);
3765 }
3766
3767 C.addCommand(llvm::make_unique<Command>(JA, *this, D.getClangProgramPath(),
3768 CmdArgs, Inputs));
3769 return;
3770 }
3771
3772 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
3773 CmdArgs.push_back("-fembed-bitcode=marker");
3774
3775 // We normally speed up the clang process a bit by skipping destructors at
3776 // exit, but when we're generating diagnostics we can rely on some of the
3777 // cleanup.
3778 if (!C.isForDiagnostics())
3779 CmdArgs.push_back("-disable-free");
3780
3781#ifdef NDEBUG
3782 const bool IsAssertBuild = false;
3783#else
3784 const bool IsAssertBuild = true;
3785#endif
3786
3787 // Disable the verification pass in -asserts builds.
3788 if (!IsAssertBuild)
3789 CmdArgs.push_back("-disable-llvm-verifier");
3790
3791 // Discard value names in assert builds unless otherwise specified.
3792 if (Args.hasFlag(options::OPT_fdiscard_value_names,
3793 options::OPT_fno_discard_value_names, !IsAssertBuild))
3794 CmdArgs.push_back("-discard-value-names");
3795
3796 // Set the main file name, so that debug info works even with
3797 // -save-temps.
3798 CmdArgs.push_back("-main-file-name");
3799 CmdArgs.push_back(getBaseInputName(Args, Input));
3800
3801 // Some flags which affect the language (via preprocessor
3802 // defines).
3803 if (Args.hasArg(options::OPT_static))
3804 CmdArgs.push_back("-static-define");
3805
3806 if (Args.hasArg(options::OPT_municode))
3807 CmdArgs.push_back("-DUNICODE");
3808
3809 if (isa<AnalyzeJobAction>(JA))
3810 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3811
3812 // Enable compatilibily mode to avoid analyzer-config related errors.
3813 // Since we can't access frontend flags through hasArg, let's manually iterate
3814 // through them.
3815 bool FoundAnalyzerConfig = false;
3816 for (auto Arg : Args.filtered(options::OPT_Xclang))
3817 if (StringRef(Arg->getValue()) == "-analyzer-config") {
3818 FoundAnalyzerConfig = true;
3819 break;
3820 }
3821 if (!FoundAnalyzerConfig)
3822 for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
3823 if (StringRef(Arg->getValue()) == "-analyzer-config") {
3824 FoundAnalyzerConfig = true;
3825 break;
3826 }
3827 if (FoundAnalyzerConfig)
3828 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
3829
3830 CheckCodeGenerationOptions(D, Args);
3831
3832 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
3833 assert(FunctionAlignment <= 31 && "function alignment will be truncated!")((FunctionAlignment <= 31 && "function alignment will be truncated!"
) ? static_cast<void> (0) : __assert_fail ("FunctionAlignment <= 31 && \"function alignment will be truncated!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3833, __PRETTY_FUNCTION__))
;
3834 if (FunctionAlignment) {
3835 CmdArgs.push_back("-function-alignment");
3836 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3837 }
3838
3839 llvm::Reloc::Model RelocationModel;
3840 unsigned PICLevel;
3841 bool IsPIE;
3842 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
3843
3844 const char *RMName = RelocationModelName(RelocationModel);
3845
3846 if ((RelocationModel == llvm::Reloc::ROPI ||
3847 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3848 types::isCXX(Input.getType()) &&
3849 !Args.hasArg(options::OPT_fallow_unsupported))
3850 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3851
3852 if (RMName) {
3853 CmdArgs.push_back("-mrelocation-model");
3854 CmdArgs.push_back(RMName);
3855 }
3856 if (PICLevel > 0) {
3857 CmdArgs.push_back("-pic-level");
3858 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3859 if (IsPIE)
3860 CmdArgs.push_back("-pic-is-pie");
3861 }
3862
3863 if (RelocationModel == llvm::Reloc::ROPI ||
3864 RelocationModel == llvm::Reloc::ROPI_RWPI)
3865 CmdArgs.push_back("-fropi");
3866 if (RelocationModel == llvm::Reloc::RWPI ||
3867 RelocationModel == llvm::Reloc::ROPI_RWPI)
3868 CmdArgs.push_back("-frwpi");
3869
3870 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3871 CmdArgs.push_back("-meabi");
3872 CmdArgs.push_back(A->getValue());
3873 }
3874
3875 CmdArgs.push_back("-mthread-model");
3876 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3877 if (!TC.isThreadModelSupported(A->getValue()))
3878 D.Diag(diag::err_drv_invalid_thread_model_for_target)
3879 << A->getValue() << A->getAsString(Args);
3880 CmdArgs.push_back(A->getValue());
3881 }
3882 else
3883 CmdArgs.push_back(Args.MakeArgString(TC.getThreadModel()));
3884
3885 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3886
3887 if (Args.hasFlag(options::OPT_fmerge_all_constants,
3888 options::OPT_fno_merge_all_constants, false))
3889 CmdArgs.push_back("-fmerge-all-constants");
3890
3891 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3892 options::OPT_fdelete_null_pointer_checks, false))
3893 CmdArgs.push_back("-fno-delete-null-pointer-checks");
3894
3895 // LLVM Code Generator Options.
3896
3897 if (Args.hasArg(options::OPT_frewrite_map_file) ||
3898 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3899 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3900 options::OPT_frewrite_map_file_EQ)) {
3901 StringRef Map = A->getValue();
3902 if (!llvm::sys::fs::exists(Map)) {
3903 D.Diag(diag::err_drv_no_such_file) << Map;
3904 } else {
3905 CmdArgs.push_back("-frewrite-map-file");
3906 CmdArgs.push_back(A->getValue());
3907 A->claim();
3908 }
3909 }
3910 }
3911
3912 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3913 StringRef v = A->getValue();
3914 CmdArgs.push_back("-mllvm");
3915 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3916 A->claim();
3917 }
3918
3919 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3920 true))
3921 CmdArgs.push_back("-fno-jump-tables");
3922
3923 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3924 options::OPT_fno_profile_sample_accurate, false))
3925 CmdArgs.push_back("-fprofile-sample-accurate");
3926
3927 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3928 options::OPT_fno_preserve_as_comments, true))
3929 CmdArgs.push_back("-fno-preserve-as-comments");
3930
3931 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3932 CmdArgs.push_back("-mregparm");
3933 CmdArgs.push_back(A->getValue());
3934 }
3935
3936 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3937 options::OPT_freg_struct_return)) {
3938 if (TC.getArch() != llvm::Triple::x86) {
3939 D.Diag(diag::err_drv_unsupported_opt_for_target)
3940 << A->getSpelling() << RawTriple.str();
3941 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3942 CmdArgs.push_back("-fpcc-struct-return");
3943 } else {
3944 assert(A->getOption().matches(options::OPT_freg_struct_return))((A->getOption().matches(options::OPT_freg_struct_return))
? static_cast<void> (0) : __assert_fail ("A->getOption().matches(options::OPT_freg_struct_return)"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3944, __PRETTY_FUNCTION__))
;
3945 CmdArgs.push_back("-freg-struct-return");
3946 }
3947 }
3948
3949 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3950 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3951
3952 if (shouldUseFramePointer(Args, RawTriple))
3953 CmdArgs.push_back("-mdisable-fp-elim");
3954 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3955 options::OPT_fno_zero_initialized_in_bss))
3956 CmdArgs.push_back("-mno-zero-initialized-in-bss");
3957
3958 bool OFastEnabled = isOptimizationLevelFast(Args);
3959 // If -Ofast is the optimization level, then -fstrict-aliasing should be
3960 // enabled. This alias option is being used to simplify the hasFlag logic.
3961 OptSpecifier StrictAliasingAliasOption =
3962 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3963 // We turn strict aliasing off by default if we're in CL mode, since MSVC
3964 // doesn't do any TBAA.
3965 bool TBAAOnByDefault = !D.IsCLMode();
3966 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3967 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3968 CmdArgs.push_back("-relaxed-aliasing");
3969 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3970 options::OPT_fno_struct_path_tbaa))
3971 CmdArgs.push_back("-no-struct-path-tbaa");
3972 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3973 false))
3974 CmdArgs.push_back("-fstrict-enums");
3975 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3976 true))
3977 CmdArgs.push_back("-fno-strict-return");
3978 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3979 options::OPT_fno_allow_editor_placeholders, false))
3980 CmdArgs.push_back("-fallow-editor-placeholders");
3981 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3982 options::OPT_fno_strict_vtable_pointers,
3983 false))
3984 CmdArgs.push_back("-fstrict-vtable-pointers");
3985 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3986 options::OPT_fno_force_emit_vtables,
3987 false))
3988 CmdArgs.push_back("-fforce-emit-vtables");
3989 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3990 options::OPT_fno_optimize_sibling_calls))
3991 CmdArgs.push_back("-mdisable-tail-calls");
3992 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
3993 options::OPT_fescaping_block_tail_calls, false))
3994 CmdArgs.push_back("-fno-escaping-block-tail-calls");
3995
3996 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3997 options::OPT_fno_fine_grained_bitfield_accesses);
3998
3999 // Handle segmented stacks.
4000 if (Args.hasArg(options::OPT_fsplit_stack))
4001 CmdArgs.push_back("-split-stacks");
4002
4003 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs);
4004
4005 // Decide whether to use verbose asm. Verbose assembly is the default on
4006 // toolchains which have the integrated assembler on by default.
4007 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
4008 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
4009 IsIntegratedAssemblerDefault) ||
4010 Args.hasArg(options::OPT_dA))
4011 CmdArgs.push_back("-masm-verbose");
4012
4013 if (!TC.useIntegratedAs())
4014 CmdArgs.push_back("-no-integrated-as");
4015
4016 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
4017 CmdArgs.push_back("-mdebug-pass");
4018 CmdArgs.push_back("Structure");
4019 }
4020 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
4021 CmdArgs.push_back("-mdebug-pass");
4022 CmdArgs.push_back("Arguments");
4023 }
4024
4025 // Enable -mconstructor-aliases except on darwin, where we have to work around
4026 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
4027 // aliases aren't supported.
4028 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
4029 CmdArgs.push_back("-mconstructor-aliases");
4030
4031 // Darwin's kernel doesn't support guard variables; just die if we
4032 // try to use them.
4033 if (KernelOrKext && RawTriple.isOSDarwin())
4034 CmdArgs.push_back("-fforbid-guard-variables");
4035
4036 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
4037 false)) {
4038 CmdArgs.push_back("-mms-bitfields");
4039 }
4040
4041 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
4042 options::OPT_mno_pie_copy_relocations,
4043 false)) {
4044 CmdArgs.push_back("-mpie-copy-relocations");
4045 }
4046
4047 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
4048 CmdArgs.push_back("-fno-plt");
4049 }
4050
4051 // -fhosted is default.
4052 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
4053 // use Freestanding.
4054 bool Freestanding =
4055 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
4056 KernelOrKext;
4057 if (Freestanding)
4058 CmdArgs.push_back("-ffreestanding");
4059
4060 // This is a coarse approximation of what llvm-gcc actually does, both
4061 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
4062 // complicated ways.
4063 bool AsynchronousUnwindTables =
4064 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
4065 options::OPT_fno_asynchronous_unwind_tables,
4066 (TC.IsUnwindTablesDefault(Args) ||
4067 TC.getSanitizerArgs().needsUnwindTables()) &&
4068 !Freestanding);
4069 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
4070 AsynchronousUnwindTables))
4071 CmdArgs.push_back("-munwind-tables");
4072
4073 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4074
4075 // FIXME: Handle -mtune=.
4076 (void)Args.hasArg(options::OPT_mtune_EQ);
4077
4078 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
4079 CmdArgs.push_back("-mcode-model");
4080 CmdArgs.push_back(A->getValue());
4081 }
4082
4083 // Add the target cpu
4084 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4085 if (!CPU.empty()) {
4086 CmdArgs.push_back("-target-cpu");
4087 CmdArgs.push_back(Args.MakeArgString(CPU));
4088 }
4089
4090 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4091
4092 // These two are potentially updated by AddClangCLArgs.
4093 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
4094 bool EmitCodeView = false;
4095
4096 // Add clang-cl arguments.
4097 types::ID InputType = Input.getType();
4098 if (D.IsCLMode())
4099 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4100
4101 DwarfFissionKind DwarfFission;
4102 RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, IsWindowsMSVC,
4103 CmdArgs, DebugInfoKind, DwarfFission);
4104
4105 // Add the split debug info name to the command lines here so we
4106 // can propagate it to the backend.
4107 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4108 TC.getTriple().isOSBinFormatELF() &&
4109 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4110 isa<BackendJobAction>(JA));
4111 const char *SplitDWARFOut;
4112 if (SplitDWARF) {
4113 CmdArgs.push_back("-split-dwarf-file");
4114 SplitDWARFOut = SplitDebugName(Args, Input, Output);
4115 CmdArgs.push_back(SplitDWARFOut);
4116 }
4117
4118 // Pass the linker version in use.
4119 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4120 CmdArgs.push_back("-target-linker-version");
4121 CmdArgs.push_back(A->getValue());
4122 }
4123
4124 if (!shouldUseLeafFramePointer(Args, RawTriple))
4125 CmdArgs.push_back("-momit-leaf-frame-pointer");
4126
4127 // Explicitly error on some things we know we don't support and can't just
4128 // ignore.
4129 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4130 Arg *Unsupported;
4131 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4132 TC.getArch() == llvm::Triple::x86) {
4133 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4134 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4135 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4136 << Unsupported->getOption().getName();
4137 }
4138 // The faltivec option has been superseded by the maltivec option.
4139 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4140 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4141 << Unsupported->getOption().getName()
4142 << "please use -maltivec and include altivec.h explicitly";
4143 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4144 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4145 << Unsupported->getOption().getName() << "please use -mno-altivec";
4146 }
4147
4148 Args.AddAllArgs(CmdArgs, options::OPT_v);
4149 Args.AddLastArg(CmdArgs, options::OPT_H);
4150 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4151 CmdArgs.push_back("-header-include-file");
4152 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4153 : "-");
4154 }
4155 Args.AddLastArg(CmdArgs, options::OPT_P);
4156 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4157
4158 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4159 CmdArgs.push_back("-diagnostic-log-file");
4160 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4161 : "-");
4162 }
4163
4164 bool UseSeparateSections = isUseSeparateSections(Triple);
4165
4166 if (Args.hasFlag(options::OPT_ffunction_sections,
4167 options::OPT_fno_function_sections, UseSeparateSections)) {
4168 CmdArgs.push_back("-ffunction-sections");
4169 }
4170
4171 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4172 UseSeparateSections)) {
4173 CmdArgs.push_back("-fdata-sections");
4174 }
4175
4176 if (!Args.hasFlag(options::OPT_funique_section_names,
4177 options::OPT_fno_unique_section_names, true))
4178 CmdArgs.push_back("-fno-unique-section-names");
4179
4180 if (auto *A = Args.getLastArg(
4181 options::OPT_finstrument_functions,
4182 options::OPT_finstrument_functions_after_inlining,
4183 options::OPT_finstrument_function_entry_bare))
4184 A->render(Args, CmdArgs);
4185
4186 // NVPTX doesn't support PGO or coverage. There's no runtime support for
4187 // sampling, overhead of call arc collection is way too high and there's no
4188 // way to collect the output.
4189 if (!Triple.isNVPTX())
4190 addPGOAndCoverageFlags(TC, C, D, Output, Args, CmdArgs);
4191
4192 if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
4193 ABICompatArg->render(Args, CmdArgs);
4194
4195 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4196 if (RawTriple.isPS4CPU() &&
4197 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4198 PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4199 PS4cpu::addSanitizerArgs(TC, CmdArgs);
4200 }
4201
4202 // Pass options for controlling the default header search paths.
4203 if (Args.hasArg(options::OPT_nostdinc)) {
4204 CmdArgs.push_back("-nostdsysteminc");
4205 CmdArgs.push_back("-nobuiltininc");
4206 } else {
4207 if (Args.hasArg(options::OPT_nostdlibinc))
4208 CmdArgs.push_back("-nostdsysteminc");
4209 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4210 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4211 }
4212
4213 // Pass the path to compiler resource files.
4214 CmdArgs.push_back("-resource-dir");
4215 CmdArgs.push_back(D.ResourceDir.c_str());
4216
4217 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4218
4219 RenderARCMigrateToolOptions(D, Args, CmdArgs);
4220
4221 // Add preprocessing options like -I, -D, etc. if we are using the
4222 // preprocessor.
4223 //
4224 // FIXME: Support -fpreprocessed
4225 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
4226 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4227
4228 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4229 // that "The compiler can only warn and ignore the option if not recognized".
4230 // When building with ccache, it will pass -D options to clang even on
4231 // preprocessed inputs and configure concludes that -fPIC is not supported.
4232 Args.ClaimAllArgs(options::OPT_D);
4233
4234 // Manually translate -O4 to -O3; let clang reject others.
4235 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4236 if (A->getOption().matches(options::OPT_O4)) {
4237 CmdArgs.push_back("-O3");
4238 D.Diag(diag::warn_O4_is_O3);
4239 } else {
4240 A->render(Args, CmdArgs);
4241 }
4242 }
4243
4244 // Warn about ignored options to clang.
4245 for (const Arg *A :
4246 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4247 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4248 A->claim();
4249 }
4250
4251 for (const Arg *A :
4252 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4253 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4254 A->claim();
4255 }
4256
4257 claimNoWarnArgs(Args);
4258
4259 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4260
4261 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4262 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4263 CmdArgs.push_back("-pedantic");
4264 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4265 Args.AddLastArg(CmdArgs, options::OPT_w);
4266
4267 // Fixed point flags
4268 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4269 /*Default=*/false))
4270 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4271
4272 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4273 // (-ansi is equivalent to -std=c89 or -std=c++98).
4274 //
4275 // If a std is supplied, only add -trigraphs if it follows the
4276 // option.
4277 bool ImplyVCPPCXXVer = false;
4278 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
4279 if (Std) {
4280 if (Std->getOption().matches(options::OPT_ansi))
4281 if (types::isCXX(InputType))
4282 CmdArgs.push_back("-std=c++98");
4283 else
4284 CmdArgs.push_back("-std=c89");
4285 else
4286 Std->render(Args, CmdArgs);
4287
4288 // If -f(no-)trigraphs appears after the language standard flag, honor it.
4289 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4290 options::OPT_ftrigraphs,
4291 options::OPT_fno_trigraphs))
4292 if (A != Std)
4293 A->render(Args, CmdArgs);
4294 } else {
4295 // Honor -std-default.
4296 //
4297 // FIXME: Clang doesn't correctly handle -std= when the input language
4298 // doesn't match. For the time being just ignore this for C++ inputs;
4299 // eventually we want to do all the standard defaulting here instead of
4300 // splitting it between the driver and clang -cc1.
4301 if (!types::isCXX(InputType))
4302 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4303 /*Joined=*/true);
4304 else if (IsWindowsMSVC)
4305 ImplyVCPPCXXVer = true;
4306
4307 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4308 options::OPT_fno_trigraphs);
4309 }
4310
4311 // GCC's behavior for -Wwrite-strings is a bit strange:
4312 // * In C, this "warning flag" changes the types of string literals from
4313 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
4314 // for the discarded qualifier.
4315 // * In C++, this is just a normal warning flag.
4316 //
4317 // Implementing this warning correctly in C is hard, so we follow GCC's
4318 // behavior for now. FIXME: Directly diagnose uses of a string literal as
4319 // a non-const char* in C, rather than using this crude hack.
4320 if (!types::isCXX(InputType)) {
4321 // FIXME: This should behave just like a warning flag, and thus should also
4322 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
4323 Arg *WriteStrings =
4324 Args.getLastArg(options::OPT_Wwrite_strings,
4325 options::OPT_Wno_write_strings, options::OPT_w);
4326 if (WriteStrings &&
4327 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
4328 CmdArgs.push_back("-fconst-strings");
4329 }
4330
4331 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
4332 // during C++ compilation, which it is by default. GCC keeps this define even
4333 // in the presence of '-w', match this behavior bug-for-bug.
4334 if (types::isCXX(InputType) &&
4335 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
4336 true)) {
4337 CmdArgs.push_back("-fdeprecated-macro");
4338 }
4339
4340 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
4341 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
4342 if (Asm->getOption().matches(options::OPT_fasm))
4343 CmdArgs.push_back("-fgnu-keywords");
4344 else
4345 CmdArgs.push_back("-fno-gnu-keywords");
4346 }
4347
4348 if (ShouldDisableDwarfDirectory(Args, TC))
4349 CmdArgs.push_back("-fno-dwarf-directory-asm");
4350
4351 if (ShouldDisableAutolink(Args, TC))
4352 CmdArgs.push_back("-fno-autolink");
4353
4354 // Add in -fdebug-compilation-dir if necessary.
4355 addDebugCompDirArg(Args, CmdArgs, D.getVFS());
4356
4357 addDebugPrefixMapArg(D, Args, CmdArgs);
4358
4359 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
4360 options::OPT_ftemplate_depth_EQ)) {
4361 CmdArgs.push_back("-ftemplate-depth");
4362 CmdArgs.push_back(A->getValue());
4363 }
4364
4365 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
4366 CmdArgs.push_back("-foperator-arrow-depth");
4367 CmdArgs.push_back(A->getValue());
4368 }
4369
4370 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
4371 CmdArgs.push_back("-fconstexpr-depth");
4372 CmdArgs.push_back(A->getValue());
4373 }
4374
4375 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
4376 CmdArgs.push_back("-fconstexpr-steps");
4377 CmdArgs.push_back(A->getValue());
4378 }
4379
4380 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
4381 CmdArgs.push_back("-fbracket-depth");
4382 CmdArgs.push_back(A->getValue());
4383 }
4384
4385 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
4386 options::OPT_Wlarge_by_value_copy_def)) {
4387 if (A->getNumValues()) {
4388 StringRef bytes = A->getValue();
4389 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
4390 } else
4391 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
4392 }
4393
4394 if (Args.hasArg(options::OPT_relocatable_pch))
4395 CmdArgs.push_back("-relocatable-pch");
4396
4397 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
4398 static const char *kCFABIs[] = {
4399 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
4400 };
4401
4402 if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
4403 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
4404 else
4405 A->render(Args, CmdArgs);
4406 }
4407
4408 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
4409 CmdArgs.push_back("-fconstant-string-class");
4410 CmdArgs.push_back(A->getValue());
4411 }
4412
4413 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
4414 CmdArgs.push_back("-ftabstop");
4415 CmdArgs.push_back(A->getValue());
4416 }
4417
4418 if (Args.hasFlag(options::OPT_fstack_size_section,
4419 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
4420 CmdArgs.push_back("-fstack-size-section");
4421
4422 CmdArgs.push_back("-ferror-limit");
4423 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
4424 CmdArgs.push_back(A->getValue());
4425 else
4426 CmdArgs.push_back("19");
4427
4428 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
4429 CmdArgs.push_back("-fmacro-backtrace-limit");
4430 CmdArgs.push_back(A->getValue());
4431 }
4432
4433 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
4434 CmdArgs.push_back("-ftemplate-backtrace-limit");
4435 CmdArgs.push_back(A->getValue());
4436 }
4437
4438 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
4439 CmdArgs.push_back("-fconstexpr-backtrace-limit");
4440 CmdArgs.push_back(A->getValue());
4441 }
4442
4443 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
4444 CmdArgs.push_back("-fspell-checking-limit");
4445 CmdArgs.push_back(A->getValue());
4446 }
4447
4448 // Pass -fmessage-length=.
4449 CmdArgs.push_back("-fmessage-length");
4450 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
4451 CmdArgs.push_back(A->getValue());
4452 } else {
4453 // If -fmessage-length=N was not specified, determine whether this is a
4454 // terminal and, if so, implicitly define -fmessage-length appropriately.
4455 unsigned N = llvm::sys::Process::StandardErrColumns();
4456 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
4457 }
4458
4459 // -fvisibility= and -fvisibility-ms-compat are of a piece.
4460 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
4461 options::OPT_fvisibility_ms_compat)) {
4462 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
4463 CmdArgs.push_back("-fvisibility");
4464 CmdArgs.push_back(A->getValue());
4465 } else {
4466 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat))((A->getOption().matches(options::OPT_fvisibility_ms_compat
)) ? static_cast<void> (0) : __assert_fail ("A->getOption().matches(options::OPT_fvisibility_ms_compat)"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 4466, __PRETTY_FUNCTION__))
;
4467 CmdArgs.push_back("-fvisibility");
4468 CmdArgs.push_back("hidden");
4469 CmdArgs.push_back("-ftype-visibility");
4470 CmdArgs.push_back("default");
4471 }
4472 }
4473
4474 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
4475 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
4476
4477 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
4478
4479 // Forward -f (flag) options which we can pass directly.
4480 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
4481 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
4482 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
4483 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
4484 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
4485 options::OPT_fno_emulated_tls);
4486 Args.AddLastArg(CmdArgs, options::OPT_fkeep_static_consts);
4487
4488 // AltiVec-like language extensions aren't relevant for assembling.
4489 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
4490 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
4491
4492 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
4493 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
4494
4495 // Forward flags for OpenMP. We don't do this if the current action is an
4496 // device offloading action other than OpenMP.
4497 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
4498 options::OPT_fno_openmp, false) &&
4499 (JA.isDeviceOffloading(Action::OFK_None) ||
4500 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
4501 switch (D.getOpenMPRuntime(Args)) {
4502 case Driver::OMPRT_OMP:
4503 case Driver::OMPRT_IOMP5:
4504 // Clang can generate useful OpenMP code for these two runtime libraries.
4505 CmdArgs.push_back("-fopenmp");
4506
4507 // If no option regarding the use of TLS in OpenMP codegeneration is
4508 // given, decide a default based on the target. Otherwise rely on the
4509 // options and pass the right information to the frontend.
4510 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
4511 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
4512 CmdArgs.push_back("-fnoopenmp-use-tls");
4513 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4514 options::OPT_fno_openmp_simd);
4515 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4516 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
4517 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
4518 Args.AddAllArgs(CmdArgs,
4519 options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
4520 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
4521 options::OPT_fno_openmp_optimistic_collapse,
4522 /*Default=*/false))
4523 CmdArgs.push_back("-fopenmp-optimistic-collapse");
4524
4525 // When in OpenMP offloading mode with NVPTX target, forward
4526 // cuda-mode flag
4527 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
4528 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
4529 CmdArgs.push_back("-fopenmp-cuda-mode");
4530
4531 // When in OpenMP offloading mode with NVPTX target, check if full runtime
4532 // is required.
4533 if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
4534 options::OPT_fno_openmp_cuda_force_full_runtime,
4535 /*Default=*/false))
4536 CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
4537 break;
4538 default:
4539 // By default, if Clang doesn't know how to generate useful OpenMP code
4540 // for a specific runtime library, we just don't pass the '-fopenmp' flag
4541 // down to the actual compilation.
4542 // FIXME: It would be better to have a mode which *only* omits IR
4543 // generation based on the OpenMP support so that we get consistent
4544 // semantic analysis, etc.
4545 break;
4546 }
4547 } else {
4548 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4549 options::OPT_fno_openmp_simd);
4550 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4551 }
4552
4553 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
4554 Sanitize.addArgs(TC, Args, CmdArgs, InputType);
4555
4556 const XRayArgs &XRay = TC.getXRayArgs();
4557 XRay.addArgs(TC, Args, CmdArgs, InputType);
4558
4559 if (TC.SupportsProfiling())
4560 Args.AddLastArg(CmdArgs, options::OPT_pg);
4561
4562 if (TC.SupportsProfiling())
4563 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4564
4565 // -flax-vector-conversions is default.
4566 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
4567 options::OPT_fno_lax_vector_conversions))
4568 CmdArgs.push_back("-fno-lax-vector-conversions");
4569
4570 if (Args.getLastArg(options::OPT_fapple_kext) ||
4571 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4572 CmdArgs.push_back("-fapple-kext");
4573
4574 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4575 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4576 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4577 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4578 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
4579 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4580 Args.AddLastArg(CmdArgs, options::OPT_malign_double);
4581
4582 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4583 CmdArgs.push_back("-ftrapv-handler");
4584 CmdArgs.push_back(A->getValue());
4585 }
4586
4587 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4588
4589 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4590 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4591 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4592 if (A->getOption().matches(options::OPT_fwrapv))
4593 CmdArgs.push_back("-fwrapv");
4594 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4595 options::OPT_fno_strict_overflow)) {
4596 if (A->getOption().matches(options::OPT_fno_strict_overflow))
4597 CmdArgs.push_back("-fwrapv");
4598 }
4599
4600 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4601 options::OPT_fno_reroll_loops))
4602 if (A->getOption().matches(options::OPT_freroll_loops))
4603 CmdArgs.push_back("-freroll-loops");
4604
4605 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4606 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4607 options::OPT_fno_unroll_loops);
4608
4609 Args.AddLastArg(CmdArgs, options::OPT_pthread);
4610
4611 if (Args.hasFlag(options::OPT_mspeculative_load_hardening, options::OPT_mno_speculative_load_hardening,
4612 false))
4613 CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
4614
4615 RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
4616 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
4617
4618 // Translate -mstackrealign
4619 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4620 false))
4621 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4622
4623 if (Args.hasArg(options::OPT_mstack_alignment)) {
4624 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4625 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4626 }
4627
4628 if (Args.hasArg(options::OPT_mstack_probe_size)) {
4629 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4630
4631 if (!Size.empty())
4632 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4633 else
4634 CmdArgs.push_back("-mstack-probe-size=0");
4635 }
4636
4637 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4638 options::OPT_mno_stack_arg_probe, true))
4639 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4640
4641 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4642 options::OPT_mno_restrict_it)) {
4643 if (A->getOption().matches(options::OPT_mrestrict_it)) {
4644 CmdArgs.push_back("-mllvm");
4645 CmdArgs.push_back("-arm-restrict-it");
4646 } else {
4647 CmdArgs.push_back("-mllvm");
4648 CmdArgs.push_back("-arm-no-restrict-it");
4649 }
4650 } else if (Triple.isOSWindows() &&
4651 (Triple.getArch() == llvm::Triple::arm ||
4652 Triple.getArch() == llvm::Triple::thumb)) {
4653 // Windows on ARM expects restricted IT blocks
4654 CmdArgs.push_back("-mllvm");
4655 CmdArgs.push_back("-arm-restrict-it");
4656 }
4657
4658 // Forward -cl options to -cc1
4659 RenderOpenCLOptions(Args, CmdArgs);
4660
4661 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4662 CmdArgs.push_back(
4663 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4664 }
4665
4666 // Forward -f options with positive and negative forms; we translate
4667 // these by hand.
4668 if (Arg *A = getLastProfileSampleUseArg(Args)) {
4669 auto *PGOArg = Args.getLastArg(
4670 options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
4671 options::OPT_fcs_profile_generate, options::OPT_fcs_profile_generate_EQ,
4672 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ);
4673 if (PGOArg)
4674 D.Diag(diag::err_drv_argument_not_allowed_with)
4675 << "SampleUse with PGO options";
4676
4677 StringRef fname = A->getValue();
4678 if (!llvm::sys::fs::exists(fname))
4679 D.Diag(diag::err_drv_no_such_file) << fname;
4680 else
4681 A->render(Args, CmdArgs);
4682 }
4683 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
4684
4685 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
4686
4687 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4688 options::OPT_fno_assume_sane_operator_new))
4689 CmdArgs.push_back("-fno-assume-sane-operator-new");
4690
4691 // -fblocks=0 is default.
4692 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4693 TC.IsBlocksDefault()) ||
4694 (Args.hasArg(options::OPT_fgnu_runtime) &&
4695 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4696 !Args.hasArg(options::OPT_fno_blocks))) {
4697 CmdArgs.push_back("-fblocks");
4698
4699 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
4700 CmdArgs.push_back("-fblocks-runtime-optional");
4701 }
4702
4703 // -fencode-extended-block-signature=1 is default.
4704 if (TC.IsEncodeExtendedBlockSignatureDefault())
4705 CmdArgs.push_back("-fencode-extended-block-signature");
4706
4707 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4708 false) &&
4709 types::isCXX(InputType)) {
4710 CmdArgs.push_back("-fcoroutines-ts");
4711 }
4712
4713 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4714 options::OPT_fno_double_square_bracket_attributes);
4715
4716 // -faccess-control is default.
4717 if (Args.hasFlag(options::OPT_fno_access_control,
4718 options::OPT_faccess_control, false))
4719 CmdArgs.push_back("-fno-access-control");
4720
4721 // -felide-constructors is the default.
4722 if (Args.hasFlag(options::OPT_fno_elide_constructors,
4723 options::OPT_felide_constructors, false))
4724 CmdArgs.push_back("-fno-elide-constructors");
4725
4726 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
4727
4728 if (KernelOrKext || (types::isCXX(InputType) &&
4729 (RTTIMode == ToolChain::RM_Disabled)))
4730 CmdArgs.push_back("-fno-rtti");
4731
4732 // -fshort-enums=0 is default for all architectures except Hexagon.
4733 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4734 TC.getArch() == llvm::Triple::hexagon))
4735 CmdArgs.push_back("-fshort-enums");
4736
4737 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4738
4739 // -fuse-cxa-atexit is default.
4740 if (!Args.hasFlag(
4741 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4742 !RawTriple.isOSWindows() &&
4743 RawTriple.getOS() != llvm::Triple::Solaris &&
4744 TC.getArch() != llvm::Triple::xcore &&
4745 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4746 RawTriple.hasEnvironment())) ||
4747 KernelOrKext)
4748 CmdArgs.push_back("-fno-use-cxa-atexit");
4749
4750 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4751 options::OPT_fno_register_global_dtors_with_atexit,
4752 RawTriple.isOSDarwin() && !KernelOrKext))
4753 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4754
4755 // -fms-extensions=0 is default.
4756 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4757 IsWindowsMSVC))
4758 CmdArgs.push_back("-fms-extensions");
4759
4760 // -fno-use-line-directives is default.
4761 if (Args.hasFlag(options::OPT_fuse_line_directives,
4762 options::OPT_fno_use_line_directives, false))
4763 CmdArgs.push_back("-fuse-line-directives");
4764
4765 // -fms-compatibility=0 is default.
4766 if (Args.hasFlag(options::OPT_fms_compatibility,
4767 options::OPT_fno_ms_compatibility,
4768 (IsWindowsMSVC &&
4769 Args.hasFlag(options::OPT_fms_extensions,
4770 options::OPT_fno_ms_extensions, true))))
4771 CmdArgs.push_back("-fms-compatibility");
4772
4773 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
4774 if (!MSVT.empty())
4775 CmdArgs.push_back(
4776 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4777
4778 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4779 if (ImplyVCPPCXXVer) {
4780 StringRef LanguageStandard;
4781 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4782 Std = StdArg;
4783 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4784 .Case("c++14", "-std=c++14")
4785 .Case("c++17", "-std=c++17")
4786 .Case("c++latest", "-std=c++2a")
4787 .Default("");
4788 if (LanguageStandard.empty())
4789 D.Diag(clang::diag::warn_drv_unused_argument)
4790 << StdArg->getAsString(Args);
4791 }
4792
4793 if (LanguageStandard.empty()) {
4794 if (IsMSVC2015Compatible)
4795 LanguageStandard = "-std=c++14";
4796 else
4797 LanguageStandard = "-std=c++11";
4798 }
4799
4800 CmdArgs.push_back(LanguageStandard.data());
4801 }
4802
4803 // -fno-borland-extensions is default.
4804 if (Args.hasFlag(options::OPT_fborland_extensions,
4805 options::OPT_fno_borland_extensions, false))
4806 CmdArgs.push_back("-fborland-extensions");
4807
4808 // -fno-declspec is default, except for PS4.
4809 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4810 RawTriple.isPS4()))
4811 CmdArgs.push_back("-fdeclspec");
4812 else if (Args.hasArg(options::OPT_fno_declspec))
4813 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4814
4815 // -fthreadsafe-static is default, except for MSVC compatibility versions less
4816 // than 19.
4817 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4818 options::OPT_fno_threadsafe_statics,
4819 !IsWindowsMSVC || IsMSVC2015Compatible))
4820 CmdArgs.push_back("-fno-threadsafe-statics");
4821
4822 // -fno-delayed-template-parsing is default, except when targeting MSVC.
4823 // Many old Windows SDK versions require this to parse.
4824 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4825 // compiler. We should be able to disable this by default at some point.
4826 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4827 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4828 CmdArgs.push_back("-fdelayed-template-parsing");
4829
4830 // -fgnu-keywords default varies depending on language; only pass if
4831 // specified.
4832 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4833 options::OPT_fno_gnu_keywords))
4834 A->render(Args, CmdArgs);
4835
4836 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4837 false))
4838 CmdArgs.push_back("-fgnu89-inline");
4839
4840 if (Args.hasArg(options::OPT_fno_inline))
4841 CmdArgs.push_back("-fno-inline");
4842
4843 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4844 options::OPT_finline_hint_functions,
4845 options::OPT_fno_inline_functions))
4846 InlineArg->render(Args, CmdArgs);
4847
4848 // FIXME: Find a better way to determine whether the language has modules
4849 // support by default, or just assume that all languages do.
4850 bool HaveModules =
4851 Std && (Std->containsValue("c++2a") || Std->containsValue("c++latest"));
4852 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4853
4854 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4855 options::OPT_fno_experimental_new_pass_manager);
4856
4857 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4858 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
4859 Input, CmdArgs);
4860
4861 if (Args.hasFlag(options::OPT_fapplication_extension,
4862 options::OPT_fno_application_extension, false))
4863 CmdArgs.push_back("-fapplication-extension");
4864
4865 // Handle GCC-style exception args.
4866 if (!C.getDriver().IsCLMode())
4867 addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
4868
4869 // Handle exception personalities
4870 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4871 options::OPT_fseh_exceptions,
4872 options::OPT_fdwarf_exceptions);
4873 if (A) {
4874 const Option &Opt = A->getOption();
4875 if (Opt.matches(options::OPT_fsjlj_exceptions))
4876 CmdArgs.push_back("-fsjlj-exceptions");
4877 if (Opt.matches(options::OPT_fseh_exceptions))
4878 CmdArgs.push_back("-fseh-exceptions");
4879 if (Opt.matches(options::OPT_fdwarf_exceptions))
4880 CmdArgs.push_back("-fdwarf-exceptions");
4881 } else {
4882 switch (TC.GetExceptionModel(Args)) {
4883 default:
4884 break;
4885 case llvm::ExceptionHandling::DwarfCFI:
4886 CmdArgs.push_back("-fdwarf-exceptions");
4887 break;
4888 case llvm::ExceptionHandling::SjLj:
4889 CmdArgs.push_back("-fsjlj-exceptions");
4890 break;
4891 case llvm::ExceptionHandling::WinEH:
4892 CmdArgs.push_back("-fseh-exceptions");
4893 break;
4894 }
4895 }
4896
4897 // C++ "sane" operator new.
4898 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4899 options::OPT_fno_assume_sane_operator_new))
4900 CmdArgs.push_back("-fno-assume-sane-operator-new");
4901
4902 // -frelaxed-template-template-args is off by default, as it is a severe
4903 // breaking change until a corresponding change to template partial ordering
4904 // is provided.
4905 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4906 options::OPT_fno_relaxed_template_template_args, false))
4907 CmdArgs.push_back("-frelaxed-template-template-args");
4908
4909 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4910 // most platforms.
4911 if (Args.hasFlag(options::OPT_fsized_deallocation,
4912 options::OPT_fno_sized_deallocation, false))
4913 CmdArgs.push_back("-fsized-deallocation");
4914
4915 // -faligned-allocation is on by default in C++17 onwards and otherwise off
4916 // by default.
4917 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4918 options::OPT_fno_aligned_allocation,
4919 options::OPT_faligned_new_EQ)) {
4920 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4921 CmdArgs.push_back("-fno-aligned-allocation");
4922 else
4923 CmdArgs.push_back("-faligned-allocation");
4924 }
4925
4926 // The default new alignment can be specified using a dedicated option or via
4927 // a GCC-compatible option that also turns on aligned allocation.
4928 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4929 options::OPT_faligned_new_EQ))
4930 CmdArgs.push_back(
4931 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4932
4933 // -fconstant-cfstrings is default, and may be subject to argument translation
4934 // on Darwin.
4935 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4936 options::OPT_fno_constant_cfstrings) ||
4937 !Args.hasFlag(options::OPT_mconstant_cfstrings,
4938 options::OPT_mno_constant_cfstrings))
4939 CmdArgs.push_back("-fno-constant-cfstrings");
4940
4941 // -fno-pascal-strings is default, only pass non-default.
4942 if (Args.hasFlag(options::OPT_fpascal_strings,
4943 options::OPT_fno_pascal_strings, false))
4944 CmdArgs.push_back("-fpascal-strings");
4945
4946 // Honor -fpack-struct= and -fpack-struct, if given. Note that
4947 // -fno-pack-struct doesn't apply to -fpack-struct=.
4948 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4949 std::string PackStructStr = "-fpack-struct=";
4950 PackStructStr += A->getValue();
4951 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4952 } else if (Args.hasFlag(options::OPT_fpack_struct,
4953 options::OPT_fno_pack_struct, false)) {
4954 CmdArgs.push_back("-fpack-struct=1");
4955 }
4956
4957 // Handle -fmax-type-align=N and -fno-type-align
4958 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4959 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4960 if (!SkipMaxTypeAlign) {
4961 std::string MaxTypeAlignStr = "-fmax-type-align=";
4962 MaxTypeAlignStr += A->getValue();
4963 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4964 }
4965 } else if (RawTriple.isOSDarwin()) {
4966 if (!SkipMaxTypeAlign) {
4967 std::string MaxTypeAlignStr = "-fmax-type-align=16";
4968 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4969 }
4970 }
4971
4972 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
4973 CmdArgs.push_back("-Qn");
4974
4975 // -fcommon is the default unless compiling kernel code or the target says so
4976 bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4977 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4978 !NoCommonDefault))
4979 CmdArgs.push_back("-fno-common");
4980
4981 // -fsigned-bitfields is default, and clang doesn't yet support
4982 // -funsigned-bitfields.
4983 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4984 options::OPT_funsigned_bitfields))
4985 D.Diag(diag::warn_drv_clang_unsupported)
4986 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4987
4988 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4989 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4990 D.Diag(diag::err_drv_clang_unsupported)
4991 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4992
4993 // -finput_charset=UTF-8 is default. Reject others
4994 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4995 StringRef value = inputCharset->getValue();
4996 if (!value.equals_lower("utf-8"))
4997 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4998 << value;
4999 }
5000
5001 // -fexec_charset=UTF-8 is default. Reject others
5002 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
5003 StringRef value = execCharset->getValue();
5004 if (!value.equals_lower("utf-8"))
5005 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
5006 << value;
5007 }
5008
5009 RenderDiagnosticsOptions(D, Args, CmdArgs);
5010
5011 // -fno-asm-blocks is default.
5012 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
5013 false))
5014 CmdArgs.push_back("-fasm-blocks");
5015
5016 // -fgnu-inline-asm is default.
5017 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
5018 options::OPT_fno_gnu_inline_asm, true))
5019 CmdArgs.push_back("-fno-gnu-inline-asm");
5020
5021 // Enable vectorization per default according to the optimization level
5022 // selected. For optimization levels that want vectorization we use the alias
5023 // option to simplify the hasFlag logic.
5024 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
5025 OptSpecifier VectorizeAliasOption =
5026 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
5027 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
5028 options::OPT_fno_vectorize, EnableVec))
5029 CmdArgs.push_back("-vectorize-loops");
5030
5031 // -fslp-vectorize is enabled based on the optimization level selected.
5032 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
5033 OptSpecifier SLPVectAliasOption =
5034 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
5035 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
5036 options::OPT_fno_slp_vectorize, EnableSLPVec))
5037 CmdArgs.push_back("-vectorize-slp");
5038
5039 ParseMPreferVectorWidth(D, Args, CmdArgs);
5040
5041 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
5042 A->render(Args, CmdArgs);
5043
5044 if (Arg *A = Args.getLastArg(
5045 options::OPT_fsanitize_undefined_strip_path_components_EQ))
5046 A->render(Args, CmdArgs);
5047
5048 // -fdollars-in-identifiers default varies depending on platform and
5049 // language; only pass if specified.
5050 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
5051 options::OPT_fno_dollars_in_identifiers)) {
5052 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
5053 CmdArgs.push_back("-fdollars-in-identifiers");
5054 else
5055 CmdArgs.push_back("-fno-dollars-in-identifiers");
5056 }
5057
5058 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
5059 // practical purposes.
5060 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
5061 options::OPT_fno_unit_at_a_time)) {
5062 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
5063 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
5064 }
5065
5066 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
5067 options::OPT_fno_apple_pragma_pack, false))
5068 CmdArgs.push_back("-fapple-pragma-pack");
5069
5070 // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
5071 if (Args.hasFlag(options::OPT_fsave_optimization_record,
5072 options::OPT_foptimization_record_file_EQ,
5073 options::OPT_fno_save_optimization_record, false) ||
5074 Args.hasFlag(options::OPT_foptimization_record_passes_EQ,
5075 options::OPT_fno_save_optimization_record, false)) {
5076 CmdArgs.push_back("-opt-record-file");
5077
5078 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
5079 if (A) {
5080 CmdArgs.push_back(A->getValue());
5081 } else {
5082 SmallString<128> F;
5083
5084 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
5085 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
5086 F = FinalOutput->getValue();
5087 }
5088
5089 if (F.empty()) {
5090 // Use the input filename.
5091 F = llvm::sys::path::stem(Input.getBaseInput());
5092
5093 // If we're compiling for an offload architecture (i.e. a CUDA device),
5094 // we need to make the file name for the device compilation different
5095 // from the host compilation.
5096 if (!JA.isDeviceOffloading(Action::OFK_None) &&
5097 !JA.isDeviceOffloading(Action::OFK_Host)) {
5098 llvm::sys::path::replace_extension(F, "");
5099 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
5100 Triple.normalize());
5101 F += "-";
5102 F += JA.getOffloadingArch();
5103 }
5104 }
5105
5106 llvm::sys::path::replace_extension(F, "opt.yaml");
5107 CmdArgs.push_back(Args.MakeArgString(F));
5108 }
5109 if (const Arg *A =
5110 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
5111 CmdArgs.push_back("-opt-record-passes");
5112 CmdArgs.push_back(A->getValue());
5113 }
5114 }
5115
5116 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5117 options::OPT_fno_rewrite_imports, false);
5118 if (RewriteImports)
5119 CmdArgs.push_back("-frewrite-imports");
5120
5121 // Enable rewrite includes if the user's asked for it or if we're generating
5122 // diagnostics.
5123 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5124 // nice to enable this when doing a crashdump for modules as well.
5125 if (Args.hasFlag(options::OPT_frewrite_includes,
5126 options::OPT_fno_rewrite_includes, false) ||
5127 (C.isForDiagnostics() && !HaveModules))
5128 CmdArgs.push_back("-frewrite-includes");
5129
5130 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5131 if (Arg *A = Args.getLastArg(options::OPT_traditional,
5132 options::OPT_traditional_cpp)) {
5133 if (isa<PreprocessJobAction>(JA))
5134 CmdArgs.push_back("-traditional-cpp");
5135 else
5136 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5137 }
5138
5139 Args.AddLastArg(CmdArgs, options::OPT_dM);
5140 Args.AddLastArg(CmdArgs, options::OPT_dD);
5141
5142 // Handle serialized diagnostics.
5143 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5144 CmdArgs.push_back("-serialize-diagnostic-file");
5145 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5146 }
5147
5148 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5149 CmdArgs.push_back("-fretain-comments-from-system-headers");
5150
5151 // Forward -fcomment-block-commands to -cc1.
5152 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5153 // Forward -fparse-all-comments to -cc1.
5154 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5155
5156 // Turn -fplugin=name.so into -load name.so
5157 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5158 CmdArgs.push_back("-load");
5159 CmdArgs.push_back(A->getValue());
5160 A->claim();
5161 }
5162
5163 // Forward -fpass-plugin=name.so to -cc1.
5164 for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
5165 CmdArgs.push_back(
5166 Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
5167 A->claim();
5168 }
5169
5170 // Setup statistics file output.
5171 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5172 if (!StatsFile.empty())
5173 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5174
5175 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5176 // parser.
5177 // -finclude-default-header flag is for preprocessor,
5178 // do not pass it to other cc1 commands when save-temps is enabled
5179 if (C.getDriver().isSaveTempsEnabled() &&
5180 !isa<PreprocessJobAction>(JA)) {
5181 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5182 Arg->claim();
5183 if (StringRef(Arg->getValue()) != "-finclude-default-header")
5184 CmdArgs.push_back(Arg->getValue());
5185 }
5186 }
5187 else {
5188 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5189 }
5190 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5191 A->claim();
5192
5193 // We translate this by hand to the -cc1 argument, since nightly test uses
5194 // it and developers have been trained to spell it with -mllvm. Both
5195 // spellings are now deprecated and should be removed.
5196 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5197 CmdArgs.push_back("-disable-llvm-optzns");
5198 } else {
5199 A->render(Args, CmdArgs);
5200 }
5201 }
5202
5203 // With -save-temps, we want to save the unoptimized bitcode output from the
5204 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5205 // by the frontend.
5206 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5207 // has slightly different breakdown between stages.
5208 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5209 // pristine IR generated by the frontend. Ideally, a new compile action should
5210 // be added so both IR can be captured.
5211 if (C.getDriver().isSaveTempsEnabled() &&
5212 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5213 isa<CompileJobAction>(JA))
5214 CmdArgs.push_back("-disable-llvm-passes");
5215
5216 Args.AddAllArgs(CmdArgs, options::OPT_undef);
5217
5218 const char *Exec = D.getClangProgramPath();
5219
5220 // Optionally embed the -cc1 level arguments into the debug info or a
5221 // section, for build analysis.
5222 // Also record command line arguments into the debug info if
5223 // -grecord-gcc-switches options is set on.
5224 // By default, -gno-record-gcc-switches is set on and no recording.
5225 auto GRecordSwitches =
5226 Args.hasFlag(options::OPT_grecord_command_line,
5227 options::OPT_gno_record_command_line, false);
5228 auto FRecordSwitches =
5229 Args.hasFlag(options::OPT_frecord_command_line,
5230 options::OPT_fno_record_command_line, false);
5231 if (FRecordSwitches && !Triple.isOSBinFormatELF())
5232 D.Diag(diag::err_drv_unsupported_opt_for_target)
5233 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5234 << TripleStr;
5235 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5236 ArgStringList OriginalArgs;
5237 for (const auto &Arg : Args)
5238 Arg->render(Args, OriginalArgs);
5239
5240 SmallString<256> Flags;
5241 Flags += Exec;
5242 for (const char *OriginalArg : OriginalArgs) {
5243 SmallString<128> EscapedArg;
5244 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5245 Flags += " ";
5246 Flags += EscapedArg;
5247 }
5248 auto FlagsArgString = Args.MakeArgString(Flags);
5249 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5250 CmdArgs.push_back("-dwarf-debug-flags");
5251 CmdArgs.push_back(FlagsArgString);
5252 }
5253 if (FRecordSwitches) {
5254 CmdArgs.push_back("-record-command-line");
5255 CmdArgs.push_back(FlagsArgString);
5256 }
5257 }
5258
5259 // Host-side cuda compilation receives all device-side outputs in a single
5260 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
5261 if ((IsCuda || IsHIP) && CudaDeviceInput) {
5262 CmdArgs.push_back("-fcuda-include-gpubinary");
5263 CmdArgs.push_back(CudaDeviceInput->getFilename());
5264 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
5265 CmdArgs.push_back("-fgpu-rdc");
5266 }
5267
5268 if (IsCuda) {
5269 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
5270 options::OPT_fno_cuda_short_ptr, false))
5271 CmdArgs.push_back("-fcuda-short-ptr");
5272 }
5273
5274 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
5275 // to specify the result of the compile phase on the host, so the meaningful
5276 // device declarations can be identified. Also, -fopenmp-is-device is passed
5277 // along to tell the frontend that it is generating code for a device, so that
5278 // only the relevant declarations are emitted.
5279 if (IsOpenMPDevice) {
5280 CmdArgs.push_back("-fopenmp-is-device");
5281 if (OpenMPDeviceInput) {
5282 CmdArgs.push_back("-fopenmp-host-ir-file-path");
5283 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
5284 }
5285 }
5286
5287 // For all the host OpenMP offloading compile jobs we need to pass the targets
5288 // information using -fopenmp-targets= option.
5289 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
5290 SmallString<128> TargetInfo("-fopenmp-targets=");
5291
5292 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
5293 assert(Tgts && Tgts->getNumValues() &&((Tgts && Tgts->getNumValues() && "OpenMP offloading has to have targets specified."
) ? static_cast<void> (0) : __assert_fail ("Tgts && Tgts->getNumValues() && \"OpenMP offloading has to have targets specified.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5294, __PRETTY_FUNCTION__))
5294 "OpenMP offloading has to have targets specified.")((Tgts && Tgts->getNumValues() && "OpenMP offloading has to have targets specified."
) ? static_cast<void> (0) : __assert_fail ("Tgts && Tgts->getNumValues() && \"OpenMP offloading has to have targets specified.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5294, __PRETTY_FUNCTION__))
;
5295 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
5296 if (i)
5297 TargetInfo += ',';
5298 // We need to get the string from the triple because it may be not exactly
5299 // the same as the one we get directly from the arguments.
5300 llvm::Triple T(Tgts->getValue(i));
5301 TargetInfo += T.getTriple();
5302 }
5303 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
5304 }
5305
5306 bool WholeProgramVTables =
5307 Args.hasFlag(options::OPT_fwhole_program_vtables,
5308 options::OPT_fno_whole_program_vtables, false);
5309 if (WholeProgramVTables) {
5310 if (!D.isUsingLTO())
5311 D.Diag(diag::err_drv_argument_only_allowed_with)
5312 << "-fwhole-program-vtables"
5313 << "-flto";
5314 CmdArgs.push_back("-fwhole-program-vtables");
5315 }
5316
5317 bool RequiresSplitLTOUnit = WholeProgramVTables || Sanitize.needsLTO();
5318 bool SplitLTOUnit =
5319 Args.hasFlag(options::OPT_fsplit_lto_unit,
5320 options::OPT_fno_split_lto_unit, RequiresSplitLTOUnit);
5321 if (RequiresSplitLTOUnit && !SplitLTOUnit)
5322 D.Diag(diag::err_drv_argument_not_allowed_with)
5323 << "-fno-split-lto-unit"
5324 << (WholeProgramVTables ? "-fwhole-program-vtables" : "-fsanitize=cfi");
5325 if (SplitLTOUnit)
5326 CmdArgs.push_back("-fsplit-lto-unit");
5327
5328 if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
5329 options::OPT_fno_experimental_isel)) {
5330 CmdArgs.push_back("-mllvm");
5331 if (A->getOption().matches(options::OPT_fexperimental_isel)) {
5332 CmdArgs.push_back("-global-isel=1");
5333
5334 // GISel is on by default on AArch64 -O0, so don't bother adding
5335 // the fallback remarks for it. Other combinations will add a warning of
5336 // some kind.
5337 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
5338 bool IsOptLevelSupported = false;
5339
5340 Arg *A = Args.getLastArg(options::OPT_O_Group);
5341 if (Triple.getArch() == llvm::Triple::aarch64) {
5342 if (!A || A->getOption().matches(options::OPT_O0))
5343 IsOptLevelSupported = true;
5344 }
5345 if (!IsArchSupported || !IsOptLevelSupported) {
5346 CmdArgs.push_back("-mllvm");
5347 CmdArgs.push_back("-global-isel-abort=2");
5348
5349 if (!IsArchSupported)
5350 D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
5351 else
5352 D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
5353 }
5354 } else {
5355 CmdArgs.push_back("-global-isel=0");
5356 }
5357 }
5358
5359 if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
5360 CmdArgs.push_back("-forder-file-instrumentation");
5361 // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
5362 // on, we need to pass these flags as linker flags and that will be handled
5363 // outside of the compiler.
5364 if (!D.isUsingLTO()) {
5365 CmdArgs.push_back("-mllvm");
5366 CmdArgs.push_back("-enable-order-file-instrumentation");
5367 }
5368 }
5369
5370 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
5371 options::OPT_fno_force_enable_int128)) {
5372 if (A->getOption().matches(options::OPT_fforce_enable_int128))
5373 CmdArgs.push_back("-fforce-enable-int128");
5374 }
5375
5376 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
5377 options::OPT_fno_complete_member_pointers, false))
5378 CmdArgs.push_back("-fcomplete-member-pointers");
5379
5380 if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
5381 options::OPT_fno_cxx_static_destructors, true))
5382 CmdArgs.push_back("-fno-c++-static-destructors");
5383
5384 if (Arg *A = Args.getLastArg(options::OPT_moutline,
5385 options::OPT_mno_outline)) {
5386 if (A->getOption().matches(options::OPT_moutline)) {
5387 // We only support -moutline in AArch64 right now. If we're not compiling
5388 // for AArch64, emit a warning and ignore the flag. Otherwise, add the
5389 // proper mllvm flags.
5390 if (Triple.getArch() != llvm::Triple::aarch64) {
5391 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
5392 } else {
5393 CmdArgs.push_back("-mllvm");
5394 CmdArgs.push_back("-enable-machine-outliner");
5395 }
5396 } else {
5397 // Disable all outlining behaviour.
5398 CmdArgs.push_back("-mllvm");
5399 CmdArgs.push_back("-enable-machine-outliner=never");
5400 }
5401 }
5402
5403 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
5404 (TC.getTriple().isOSBinFormatELF() ||
5405 TC.getTriple().isOSBinFormatCOFF()) &&
5406 !TC.getTriple().isPS4() &&
5407 !TC.getTriple().isOSNetBSD() &&
5408 !Distro(D.getVFS()).IsGentoo() &&
5409 !TC.getTriple().isAndroid() &&
5410 TC.useIntegratedAs()))
5411 CmdArgs.push_back("-faddrsig");
5412
5413 // Add the "-o out -x type src.c" flags last. This is done primarily to make
5414 // the -cc1 command easier to edit when reproducing compiler crashes.
5415 if (Output.getType() == types::TY_Dependencies) {
5416 // Handled with other dependency code.
5417 } else if (Output.isFilename()) {
5418 CmdArgs.push_back("-o");
5419 CmdArgs.push_back(Output.getFilename());
5420 } else {
5421 assert(Output.isNothing() && "Invalid output.")((Output.isNothing() && "Invalid output.") ? static_cast
<void> (0) : __assert_fail ("Output.isNothing() && \"Invalid output.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5421, __PRETTY_FUNCTION__))
;
5422 }
5423
5424 addDashXForInput(Args, Input, CmdArgs);
5425
5426 ArrayRef<InputInfo> FrontendInputs = Input;
5427 if (IsHeaderModulePrecompile)
5428 FrontendInputs = ModuleHeaderInputs;
5429 else if (Input.isNothing())
5430 FrontendInputs = {};
5431
5432 for (const InputInfo &Input : FrontendInputs) {
5433 if (Input.isFilename())
5434 CmdArgs.push_back(Input.getFilename());
5435 else
5436 Input.getInputArg().renderAsInput(Args, CmdArgs);
5437 }
5438
5439 // Finally add the compile command to the compilation.
5440 if (Args.hasArg(options::OPT__SLASH_fallback) &&
5441 Output.getType() == types::TY_Object &&
5442 (InputType == types::TY_C || InputType == types::TY_CXX)) {
5443 auto CLCommand =
5444 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
5445 C.addCommand(llvm::make_unique<FallbackCommand>(
5446 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
5447 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
5448 isa<PrecompileJobAction>(JA)) {
5449 // In /fallback builds, run the main compilation even if the pch generation
5450 // fails, so that the main compilation's fallback to cl.exe runs.
5451 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
5452 CmdArgs, Inputs));
5453 } else {
5454 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5455 }
5456
5457 // Make the compile command echo its inputs for /showFilenames.
5458 if (Output.getType() == types::TY_Object &&
5459 Args.hasFlag(options::OPT__SLASH_showFilenames,
5460 options::OPT__SLASH_showFilenames_, false)) {
5461 C.getJobs().getJobs().back()->setPrintInputFilenames(true);
5462 }
5463
5464 if (Arg *A = Args.getLastArg(options::OPT_pg))
5465 if (!shouldUseFramePointer(Args, Triple))
5466 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
5467 << A->getAsString(Args);
5468
5469 // Claim some arguments which clang supports automatically.
5470
5471 // -fpch-preprocess is used with gcc to add a special marker in the output to
5472 // include the PCH file.
5473 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
5474
5475 // Claim some arguments which clang doesn't support, but we don't
5476 // care to warn the user about.
5477 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
5478 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
5479
5480 // Disable warnings for clang -E -emit-llvm foo.c
5481 Args.ClaimAllArgs(options::OPT_emit_llvm);
5482}
5483
5484Clang::Clang(const ToolChain &TC)
5485 // CAUTION! The first constructor argument ("clang") is not arbitrary,
5486 // as it is for other tools. Some operations on a Tool actually test
5487 // whether that tool is Clang based on the Tool's Name as a string.
5488 : Tool("clang", "clang frontend", TC, RF_Full) {}
5489
5490Clang::~Clang() {}
5491
5492/// Add options related to the Objective-C runtime/ABI.
5493///
5494/// Returns true if the runtime is non-fragile.
5495ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
5496 ArgStringList &cmdArgs,
5497 RewriteKind rewriteKind) const {
5498 // Look for the controlling runtime option.
5499 Arg *runtimeArg =
5500 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
5501 options::OPT_fobjc_runtime_EQ);
5502
5503 // Just forward -fobjc-runtime= to the frontend. This supercedes
5504 // options about fragility.
5505 if (runtimeArg &&
5506 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
5507 ObjCRuntime runtime;
5508 StringRef value = runtimeArg->getValue();
5509 if (runtime.tryParse(value)) {
5510 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
5511 << value;
5512 }
5513 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
5514 (runtime.getVersion() >= VersionTuple(2, 0)))
5515 if (!getToolChain().getTriple().isOSBinFormatELF() &&
5516 !getToolChain().getTriple().isOSBinFormatCOFF()) {
5517 getToolChain().getDriver().Diag(
5518 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
5519 << runtime.getVersion().getMajor();
5520 }
5521
5522 runtimeArg->render(args, cmdArgs);
5523 return runtime;
5524 }
5525
5526 // Otherwise, we'll need the ABI "version". Version numbers are
5527 // slightly confusing for historical reasons:
5528 // 1 - Traditional "fragile" ABI
5529 // 2 - Non-fragile ABI, version 1
5530 // 3 - Non-fragile ABI, version 2
5531 unsigned objcABIVersion = 1;
5532 // If -fobjc-abi-version= is present, use that to set the version.
5533 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
5534 StringRef value = abiArg->getValue();
5535 if (value == "1")
5536 objcABIVersion = 1;
5537 else if (value == "2")
5538 objcABIVersion = 2;
5539 else if (value == "3")
5540 objcABIVersion = 3;
5541 else
5542 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
5543 } else {
5544 // Otherwise, determine if we are using the non-fragile ABI.
5545 bool nonFragileABIIsDefault =
5546 (rewriteKind == RK_NonFragile ||
5547 (rewriteKind == RK_None &&
5548 getToolChain().IsObjCNonFragileABIDefault()));
5549 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
5550 options::OPT_fno_objc_nonfragile_abi,
5551 nonFragileABIIsDefault)) {
5552// Determine the non-fragile ABI version to use.
5553#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
5554 unsigned nonFragileABIVersion = 1;
5555#else
5556 unsigned nonFragileABIVersion = 2;
5557#endif
5558
5559 if (Arg *abiArg =
5560 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
5561 StringRef value = abiArg->getValue();
5562 if (value == "1")
5563 nonFragileABIVersion = 1;
5564 else if (value == "2")
5565 nonFragileABIVersion = 2;
5566 else
5567 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
5568 << value;
5569 }
5570
5571 objcABIVersion = 1 + nonFragileABIVersion;
5572 } else {
5573 objcABIVersion = 1;
5574 }
5575 }
5576
5577 // We don't actually care about the ABI version other than whether
5578 // it's non-fragile.
5579 bool isNonFragile = objcABIVersion != 1;
5580
5581 // If we have no runtime argument, ask the toolchain for its default runtime.
5582 // However, the rewriter only really supports the Mac runtime, so assume that.
5583 ObjCRuntime runtime;
5584 if (!runtimeArg) {
5585 switch (rewriteKind) {
5586 case RK_None:
5587 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5588 break;
5589 case RK_Fragile:
5590 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
5591 break;
5592 case RK_NonFragile:
5593 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5594 break;
5595 }
5596
5597 // -fnext-runtime
5598 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
5599 // On Darwin, make this use the default behavior for the toolchain.
5600 if (getToolChain().getTriple().isOSDarwin()) {
5601 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5602
5603 // Otherwise, build for a generic macosx port.
5604 } else {
5605 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5606 }
5607
5608 // -fgnu-runtime
5609 } else {
5610 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime))((runtimeArg->getOption().matches(options::OPT_fgnu_runtime
)) ? static_cast<void> (0) : __assert_fail ("runtimeArg->getOption().matches(options::OPT_fgnu_runtime)"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5610, __PRETTY_FUNCTION__))
;
5611 // Legacy behaviour is to target the gnustep runtime if we are in
5612 // non-fragile mode or the GCC runtime in fragile mode.
5613 if (isNonFragile)
5614 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
5615 else
5616 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
5617 }
5618
5619 cmdArgs.push_back(
5620 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
5621 return runtime;
5622}
5623
5624static bool maybeConsumeDash(const std::string &EH, size_t &I) {
5625 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
5626 I += HaveDash;
5627 return !HaveDash;
5628}
5629
5630namespace {
5631struct EHFlags {
5632 bool Synch = false;
5633 bool Asynch = false;
5634 bool NoUnwindC = false;
5635};
5636} // end anonymous namespace
5637
5638/// /EH controls whether to run destructor cleanups when exceptions are
5639/// thrown. There are three modifiers:
5640/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
5641/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
5642/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
5643/// - c: Assume that extern "C" functions are implicitly nounwind.
5644/// The default is /EHs-c-, meaning cleanups are disabled.
5645static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
5646 EHFlags EH;
5647
5648 std::vector<std::string> EHArgs =
5649 Args.getAllArgValues(options::OPT__SLASH_EH);
5650 for (auto EHVal : EHArgs) {
5651 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5652 switch (EHVal[I]) {
5653 case 'a':
5654 EH.Asynch = maybeConsumeDash(EHVal, I);
5655 if (EH.Asynch)
5656 EH.Synch = false;
5657 continue;
5658 case 'c':
5659 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5660 continue;
5661 case 's':
5662 EH.Synch = maybeConsumeDash(EHVal, I);
5663 if (EH.Synch)
5664 EH.Asynch = false;
5665 continue;
5666 default:
5667 break;
5668 }
5669 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5670 break;
5671 }
5672 }
5673 // The /GX, /GX- flags are only processed if there are not /EH flags.
5674 // The default is that /GX is not specified.
5675 if (EHArgs.empty() &&
5676 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5677 /*default=*/false)) {
5678 EH.Synch = true;
5679 EH.NoUnwindC = true;
5680 }
5681
5682 return EH;
5683}
5684
5685void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5686 ArgStringList &CmdArgs,
5687 codegenoptions::DebugInfoKind *DebugInfoKind,
5688 bool *EmitCodeView) const {
5689 unsigned RTOptionID = options::OPT__SLASH_MT;
5690
5691 if (Args.hasArg(options::OPT__SLASH_LDd))
5692 // The /LDd option implies /MTd. The dependent lib part can be overridden,
5693 // but defining _DEBUG is sticky.
5694 RTOptionID = options::OPT__SLASH_MTd;
5695
5696 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5697 RTOptionID = A->getOption().getID();
5698
5699 StringRef FlagForCRT;
5700 switch (RTOptionID) {
5701 case options::OPT__SLASH_MD:
5702 if (Args.hasArg(options::OPT__SLASH_LDd))
5703 CmdArgs.push_back("-D_DEBUG");
5704 CmdArgs.push_back("-D_MT");
5705 CmdArgs.push_back("-D_DLL");
5706 FlagForCRT = "--dependent-lib=msvcrt";
5707 break;
5708 case options::OPT__SLASH_MDd:
5709 CmdArgs.push_back("-D_DEBUG");
5710 CmdArgs.push_back("-D_MT");
5711 CmdArgs.push_back("-D_DLL");
5712 FlagForCRT = "--dependent-lib=msvcrtd";
5713 break;
5714 case options::OPT__SLASH_MT:
5715 if (Args.hasArg(options::OPT__SLASH_LDd))
5716 CmdArgs.push_back("-D_DEBUG");
5717 CmdArgs.push_back("-D_MT");
5718 CmdArgs.push_back("-flto-visibility-public-std");
5719 FlagForCRT = "--dependent-lib=libcmt";
5720 break;
5721 case options::OPT__SLASH_MTd:
5722 CmdArgs.push_back("-D_DEBUG");
5723 CmdArgs.push_back("-D_MT");
5724 CmdArgs.push_back("-flto-visibility-public-std");
5725 FlagForCRT = "--dependent-lib=libcmtd";
5726 break;
5727 default:
5728 llvm_unreachable("Unexpected option ID.")::llvm::llvm_unreachable_internal("Unexpected option ID.", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5728)
;
5729 }
5730
5731 if (Args.hasArg(options::OPT__SLASH_Zl)) {
5732 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5733 } else {
5734 CmdArgs.push_back(FlagForCRT.data());
5735
5736 // This provides POSIX compatibility (maps 'open' to '_open'), which most
5737 // users want. The /Za flag to cl.exe turns this off, but it's not
5738 // implemented in clang.
5739 CmdArgs.push_back("--dependent-lib=oldnames");
5740 }
5741
5742 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
5743 A->render(Args, CmdArgs);
5744
5745 // This controls whether or not we emit RTTI data for polymorphic types.
5746 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5747 /*default=*/false))
5748 CmdArgs.push_back("-fno-rtti-data");
5749
5750 // This controls whether or not we emit stack-protector instrumentation.
5751 // In MSVC, Buffer Security Check (/GS) is on by default.
5752 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5753 /*default=*/true)) {
5754 CmdArgs.push_back("-stack-protector");
5755 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5756 }
5757
5758 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5759 if (Arg *DebugInfoArg =
5760 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5761 options::OPT_gline_tables_only)) {
5762 *EmitCodeView = true;
5763 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5764 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5765 else
5766 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5767 } else {
5768 *EmitCodeView = false;
5769 }
5770
5771 const Driver &D = getToolChain().getDriver();
5772 EHFlags EH = parseClangCLEHFlags(D, Args);
5773 if (EH.Synch || EH.Asynch) {
5774 if (types::isCXX(InputType))
5775 CmdArgs.push_back("-fcxx-exceptions");
5776 CmdArgs.push_back("-fexceptions");
5777 }
5778 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5779 CmdArgs.push_back("-fexternc-nounwind");
5780
5781 // /EP should expand to -E -P.
5782 if (Args.hasArg(options::OPT__SLASH_EP)) {
5783 CmdArgs.push_back("-E");
5784 CmdArgs.push_back("-P");
5785 }
5786
5787 unsigned VolatileOptionID;
5788 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5789 getToolChain().getArch() == llvm::Triple::x86)
5790 VolatileOptionID = options::OPT__SLASH_volatile_ms;
5791 else
5792 VolatileOptionID = options::OPT__SLASH_volatile_iso;
5793
5794 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5795 VolatileOptionID = A->getOption().getID();
5796
5797 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5798 CmdArgs.push_back("-fms-volatile");
5799
5800 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
5801 options::OPT__SLASH_Zc_dllexportInlines,
5802 false)) {
5803 if (Args.hasArg(options::OPT__SLASH_fallback)) {
5804 D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
5805 } else {
5806 CmdArgs.push_back("-fno-dllexport-inlines");
5807 }
5808 }
5809
5810 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5811 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5812 if (MostGeneralArg && BestCaseArg)
5813 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5814 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5815
5816 if (MostGeneralArg) {
5817 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5818 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5819 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5820
5821 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5822 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5823 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5824 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5825 << FirstConflict->getAsString(Args)
5826 << SecondConflict->getAsString(Args);
5827
5828 if (SingleArg)
5829 CmdArgs.push_back("-fms-memptr-rep=single");
5830 else if (MultipleArg)
5831 CmdArgs.push_back("-fms-memptr-rep=multiple");
5832 else
5833 CmdArgs.push_back("-fms-memptr-rep=virtual");
5834 }
5835
5836 // Parse the default calling convention options.
5837 if (Arg *CCArg =
5838 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5839 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5840 options::OPT__SLASH_Gregcall)) {
5841 unsigned DCCOptId = CCArg->getOption().getID();
5842 const char *DCCFlag = nullptr;
5843 bool ArchSupported = true;
5844 llvm::Triple::ArchType Arch = getToolChain().getArch();
5845 switch (DCCOptId) {
5846 case options::OPT__SLASH_Gd:
5847 DCCFlag = "-fdefault-calling-conv=cdecl";
5848 break;
5849 case options::OPT__SLASH_Gr:
5850 ArchSupported = Arch == llvm::Triple::x86;
5851 DCCFlag = "-fdefault-calling-conv=fastcall";
5852 break;
5853 case options::OPT__SLASH_Gz:
5854 ArchSupported = Arch == llvm::Triple::x86;
5855 DCCFlag = "-fdefault-calling-conv=stdcall";
5856 break;
5857 case options::OPT__SLASH_Gv:
5858 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5859 DCCFlag = "-fdefault-calling-conv=vectorcall";
5860 break;
5861 case options::OPT__SLASH_Gregcall:
5862 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5863 DCCFlag = "-fdefault-calling-conv=regcall";
5864 break;
5865 }
5866
5867 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5868 if (ArchSupported && DCCFlag)
5869 CmdArgs.push_back(DCCFlag);
5870 }
5871
5872 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5873 A->render(Args, CmdArgs);
5874
5875 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5876 CmdArgs.push_back("-fdiagnostics-format");
5877 if (Args.hasArg(options::OPT__SLASH_fallback))
5878 CmdArgs.push_back("msvc-fallback");
5879 else
5880 CmdArgs.push_back("msvc");
5881 }
5882
5883 if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
5884 SmallVector<StringRef, 1> SplitArgs;
5885 StringRef(A->getValue()).split(SplitArgs, ",");
5886 bool Instrument = false;
5887 bool NoChecks = false;
5888 for (StringRef Arg : SplitArgs) {
5889 if (Arg.equals_lower("cf"))
5890 Instrument = true;
5891 else if (Arg.equals_lower("cf-"))
5892 Instrument = false;
5893 else if (Arg.equals_lower("nochecks"))
5894 NoChecks = true;
5895 else if (Arg.equals_lower("nochecks-"))
5896 NoChecks = false;
5897 else
5898 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << Arg;
5899 }
5900 // Currently there's no support emitting CFG instrumentation; the flag only
5901 // emits the table of address-taken functions.
5902 if (Instrument || NoChecks)
5903 CmdArgs.push_back("-cfguard");
5904 }
5905}
5906
5907visualstudio::Compiler *Clang::getCLFallback() const {
5908 if (!CLFallback)
5909 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5910 return CLFallback.get();
5911}
5912
5913
5914const char *Clang::getBaseInputName(const ArgList &Args,
5915 const InputInfo &Input) {
5916 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5917}
5918
5919const char *Clang::getBaseInputStem(const ArgList &Args,
5920 const InputInfoList &Inputs) {
5921 const char *Str = getBaseInputName(Args, Inputs[0]);
5922
5923 if (const char *End = strrchr(Str, '.'))
5924 return Args.MakeArgString(std::string(Str, End));
5925
5926 return Str;
5927}
5928
5929const char *Clang::getDependencyFileName(const ArgList &Args,
5930 const InputInfoList &Inputs) {
5931 // FIXME: Think about this more.
5932 std::string Res;
5933
5934 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5935 std::string Str(OutputOpt->getValue());
5936 Res = Str.substr(0, Str.rfind('.'));
5937 } else {
5938 Res = getBaseInputStem(Args, Inputs);
5939 }
5940 return Args.MakeArgString(Res + ".d");
5941}
5942
5943// Begin ClangAs
5944
5945void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5946 ArgStringList &CmdArgs) const {
5947 StringRef CPUName;
5948 StringRef ABIName;
5949 const llvm::Triple &Triple = getToolChain().getTriple();
5950 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5951
5952 CmdArgs.push_back("-target-abi");
5953 CmdArgs.push_back(ABIName.data());
5954}
5955
5956void ClangAs::AddX86TargetArgs(const ArgList &Args,
5957 ArgStringList &CmdArgs) const {
5958 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5959 StringRef Value = A->getValue();
5960 if (Value == "intel" || Value == "att") {
5961 CmdArgs.push_back("-mllvm");
5962 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5963 } else {
5964 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5965 << A->getOption().getName() << Value;
5966 }
5967 }
5968}
5969
5970void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
5971 ArgStringList &CmdArgs) const {
5972 const llvm::Triple &Triple = getToolChain().getTriple();
5973 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
5974
5975 CmdArgs.push_back("-target-abi");
5976 CmdArgs.push_back(ABIName.data());
5977}
5978
5979void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
5980 const InputInfo &Output, const InputInfoList &Inputs,
5981 const ArgList &Args,
5982 const char *LinkingOutput) const {
5983 ArgStringList CmdArgs;
5984
5985 assert(Inputs.size() == 1 && "Unexpected number of inputs.")((Inputs.size() == 1 && "Unexpected number of inputs."
) ? static_cast<void> (0) : __assert_fail ("Inputs.size() == 1 && \"Unexpected number of inputs.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5985, __PRETTY_FUNCTION__))
;
5986 const InputInfo &Input = Inputs[0];
5987
5988 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5989 const std::string &TripleStr = Triple.getTriple();
5990 const auto &D = getToolChain().getDriver();
5991
5992 // Don't warn about "clang -w -c foo.s"
5993 Args.ClaimAllArgs(options::OPT_w);
5994 // and "clang -emit-llvm -c foo.s"
5995 Args.ClaimAllArgs(options::OPT_emit_llvm);
5996
5997 claimNoWarnArgs(Args);
5998
5999 // Invoke ourselves in -cc1as mode.
6000 //
6001 // FIXME: Implement custom jobs for internal actions.
6002 CmdArgs.push_back("-cc1as");
6003
6004 // Add the "effective" target triple.
6005 CmdArgs.push_back("-triple");
6006 CmdArgs.push_back(Args.MakeArgString(TripleStr));
6007
6008 // Set the output mode, we currently only expect to be used as a real
6009 // assembler.
6010 CmdArgs.push_back("-filetype");
6011 CmdArgs.push_back("obj");
6012
6013 // Set the main file name, so that debug info works even with
6014 // -save-temps or preprocessed assembly.
6015 CmdArgs.push_back("-main-file-name");
6016 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
6017
6018 // Add the target cpu
6019 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
6020 if (!CPU.empty()) {
6021 CmdArgs.push_back("-target-cpu");
6022 CmdArgs.push_back(Args.MakeArgString(CPU));
6023 }
6024
6025 // Add the target features
6026 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
6027
6028 // Ignore explicit -force_cpusubtype_ALL option.
6029 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
6030
6031 // Pass along any -I options so we get proper .include search paths.
6032 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
6033
6034 // Determine the original source input.
6035 const Action *SourceAction = &JA;
6036 while (SourceAction->getKind() != Action::InputClass) {
6037 assert(!SourceAction->getInputs().empty() && "unexpected root action!")((!SourceAction->getInputs().empty() && "unexpected root action!"
) ? static_cast<void> (0) : __assert_fail ("!SourceAction->getInputs().empty() && \"unexpected root action!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6037, __PRETTY_FUNCTION__))
;
6038 SourceAction = SourceAction->getInputs()[0];
6039 }
6040
6041 // Forward -g and handle debug info related flags, assuming we are dealing
6042 // with an actual assembly file.
6043 bool WantDebug = false;
6044 unsigned DwarfVersion = 0;
6045 Args.ClaimAllArgs(options::OPT_g_Group);
6046 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
6047 WantDebug = !A->getOption().matches(options::OPT_g0) &&
6048 !A->getOption().matches(options::OPT_ggdb0);
6049 if (WantDebug)
6050 DwarfVersion = DwarfVersionNum(A->getSpelling());
6051 }
6052 if (DwarfVersion == 0)
6053 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
6054
6055 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
6056
6057 if (SourceAction->getType() == types::TY_Asm ||
6058 SourceAction->getType() == types::TY_PP_Asm) {
6059 // You might think that it would be ok to set DebugInfoKind outside of
6060 // the guard for source type, however there is a test which asserts
6061 // that some assembler invocation receives no -debug-info-kind,
6062 // and it's not clear whether that test is just overly restrictive.
6063 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
6064 : codegenoptions::NoDebugInfo);
6065 // Add the -fdebug-compilation-dir flag if needed.
6066 addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());
6067
6068 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
6069
6070 // Set the AT_producer to the clang version when using the integrated
6071 // assembler on assembly source files.
6072 CmdArgs.push_back("-dwarf-debug-producer");
6073 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
6074
6075 // And pass along -I options
6076 Args.AddAllArgs(CmdArgs, options::OPT_I);
6077 }
6078 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
6079 llvm::DebuggerKind::Default);
6080 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
6081
6082
6083 // Handle -fPIC et al -- the relocation-model affects the assembler
6084 // for some targets.
6085 llvm::Reloc::Model RelocationModel;
6086 unsigned PICLevel;
6087 bool IsPIE;
6088 std::tie(RelocationModel, PICLevel, IsPIE) =
6089 ParsePICArgs(getToolChain(), Args);
6090
6091 const char *RMName = RelocationModelName(RelocationModel);
6092 if (RMName) {
6093 CmdArgs.push_back("-mrelocation-model");
6094 CmdArgs.push_back(RMName);
6095 }
6096
6097 // Optionally embed the -cc1as level arguments into the debug info, for build
6098 // analysis.
6099 if (getToolChain().UseDwarfDebugFlags()) {
6100 ArgStringList OriginalArgs;
6101 for (const auto &Arg : Args)
6102 Arg->render(Args, OriginalArgs);
6103
6104 SmallString<256> Flags;
6105 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6106 Flags += Exec;
6107 for (const char *OriginalArg : OriginalArgs) {
6108 SmallString<128> EscapedArg;
6109 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
6110 Flags += " ";
6111 Flags += EscapedArg;
6112 }
6113 CmdArgs.push_back("-dwarf-debug-flags");
6114 CmdArgs.push_back(Args.MakeArgString(Flags));
6115 }
6116
6117 // FIXME: Add -static support, once we have it.
6118
6119 // Add target specific flags.
6120 switch (getToolChain().getArch()) {
6121 default:
6122 break;
6123
6124 case llvm::Triple::mips:
6125 case llvm::Triple::mipsel:
6126 case llvm::Triple::mips64:
6127 case llvm::Triple::mips64el:
6128 AddMIPSTargetArgs(Args, CmdArgs);
6129 break;
6130
6131 case llvm::Triple::x86:
6132 case llvm::Triple::x86_64:
6133 AddX86TargetArgs(Args, CmdArgs);
6134 break;
6135
6136 case llvm::Triple::arm:
6137 case llvm::Triple::armeb:
6138 case llvm::Triple::thumb:
6139 case llvm::Triple::thumbeb:
6140 // This isn't in AddARMTargetArgs because we want to do this for assembly
6141 // only, not C/C++.
6142 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
6143 options::OPT_mno_default_build_attributes, true)) {
6144 CmdArgs.push_back("-mllvm");
6145 CmdArgs.push_back("-arm-add-build-attributes");
6146 }
6147 break;
6148
6149 case llvm::Triple::riscv32:
6150 case llvm::Triple::riscv64:
6151 AddRISCVTargetArgs(Args, CmdArgs);
6152 break;
6153 }
6154
6155 // Consume all the warning flags. Usually this would be handled more
6156 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6157 // doesn't handle that so rather than warning about unused flags that are
6158 // actually used, we'll lie by omission instead.
6159 // FIXME: Stop lying and consume only the appropriate driver flags
6160 Args.ClaimAllArgs(options::OPT_W_Group);
6161
6162 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6163 getToolChain().getDriver());
6164
6165 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6166
6167 assert(Output.isFilename() && "Unexpected lipo output.")((Output.isFilename() && "Unexpected lipo output.") ?
static_cast<void> (0) : __assert_fail ("Output.isFilename() && \"Unexpected lipo output.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6167, __PRETTY_FUNCTION__))
;
6168 CmdArgs.push_back("-o");
6169 CmdArgs.push_back(Output.getFilename());
6170
6171 const llvm::Triple &T = getToolChain().getTriple();
6172 Arg *A;
6173 if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
6174 T.isOSBinFormatELF()) {
6175 CmdArgs.push_back("-split-dwarf-file");
6176 CmdArgs.push_back(SplitDebugName(Args, Input, Output));
6177 }
6178
6179 assert(Input.isFilename() && "Invalid input.")((Input.isFilename() && "Invalid input.") ? static_cast
<void> (0) : __assert_fail ("Input.isFilename() && \"Invalid input.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6179, __PRETTY_FUNCTION__))
;
6180 CmdArgs.push_back(Input.getFilename());
6181
6182 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6183 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
6184}
6185
6186// Begin OffloadBundler
6187
6188void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
6189 const InputInfo &Output,
6190 const InputInfoList &Inputs,
6191 const llvm::opt::ArgList &TCArgs,
6192 const char *LinkingOutput) const {
6193 // The version with only one output is expected to refer to a bundling job.
6194 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!")((isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!"
) ? static_cast<void> (0) : __assert_fail ("isa<OffloadBundlingJobAction>(JA) && \"Expecting bundling job!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6194, __PRETTY_FUNCTION__))
;
6195
6196 // The bundling command looks like this:
6197 // clang-offload-bundler -type=bc
6198 // -targets=host-triple,openmp-triple1,openmp-triple2
6199 // -outputs=input_file
6200 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6201
6202 ArgStringList CmdArgs;
6203
6204 // Get the type.
6205 CmdArgs.push_back(TCArgs.MakeArgString(
6206 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
6207
6208 assert(JA.getInputs().size() == Inputs.size() &&((JA.getInputs().size() == Inputs.size() && "Not have inputs for all dependence actions??"
) ? static_cast<void> (0) : __assert_fail ("JA.getInputs().size() == Inputs.size() && \"Not have inputs for all dependence actions??\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6209, __PRETTY_FUNCTION__))
6209 "Not have inputs for all dependence actions??")((JA.getInputs().size() == Inputs.size() && "Not have inputs for all dependence actions??"
) ? static_cast<void> (0) : __assert_fail ("JA.getInputs().size() == Inputs.size() && \"Not have inputs for all dependence actions??\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6209, __PRETTY_FUNCTION__))
;
6210
6211 // Get the targets.
6212 SmallString<128> Triples;
6213 Triples += "-targets=";
6214 for (unsigned I = 0; I < Inputs.size(); ++I) {
6215 if (I)
6216 Triples += ',';
6217
6218 // Find ToolChain for this input.
6219 Action::OffloadKind CurKind = Action::OFK_Host;
6220 const ToolChain *CurTC = &getToolChain();
6221 const Action *CurDep = JA.getInputs()[I];
6222
6223 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
6224 CurTC = nullptr;
6225 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
6226 assert(CurTC == nullptr && "Expected one dependence!")((CurTC == nullptr && "Expected one dependence!") ? static_cast
<void> (0) : __assert_fail ("CurTC == nullptr && \"Expected one dependence!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6226, __PRETTY_FUNCTION__))
;
6227 CurKind = A->getOffloadingDeviceKind();
6228 CurTC = TC;
6229 });
6230 }
6231 Triples += Action::GetOffloadKindName(CurKind);
6232 Triples += '-';
6233 Triples += CurTC->getTriple().normalize();
6234 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
6235 Triples += '-';
6236 Triples += CurDep->getOffloadingArch();
6237 }
6238 }
6239 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6240
6241 // Get bundled file command.
6242 CmdArgs.push_back(
6243 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
6244
6245 // Get unbundled files command.
6246 SmallString<128> UB;
6247 UB += "-inputs=";
6248 for (unsigned I = 0; I < Inputs.size(); ++I) {
6249 if (I)
6250 UB += ',';
6251
6252 // Find ToolChain for this input.
6253 const ToolChain *CurTC = &getToolChain();
6254 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
6255 CurTC = nullptr;
6256 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
6257 assert(CurTC == nullptr && "Expected one dependence!")((CurTC == nullptr && "Expected one dependence!") ? static_cast
<void> (0) : __assert_fail ("CurTC == nullptr && \"Expected one dependence!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6257, __PRETTY_FUNCTION__))
;
6258 CurTC = TC;
6259 });
6260 }
6261 UB += CurTC->getInputFilename(Inputs[I]);
6262 }
6263 CmdArgs.push_back(TCArgs.MakeArgString(UB));
6264
6265 // All the inputs are encoded as commands.
6266 C.addCommand(llvm::make_unique<Command>(
6267 JA, *this,
6268 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6269 CmdArgs, None));
6270}
6271
6272void OffloadBundler::ConstructJobMultipleOutputs(
6273 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
6274 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
6275 const char *LinkingOutput) const {
6276 // The version with multiple outputs is expected to refer to a unbundling job.
6277 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
6278
6279 // The unbundling command looks like this:
6280 // clang-offload-bundler -type=bc
6281 // -targets=host-triple,openmp-triple1,openmp-triple2
6282 // -inputs=input_file
6283 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6284 // -unbundle
6285
6286 ArgStringList CmdArgs;
6287
6288 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!")((Inputs.size() == 1 && "Expecting to unbundle a single file!"
) ? static_cast<void> (0) : __assert_fail ("Inputs.size() == 1 && \"Expecting to unbundle a single file!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6288, __PRETTY_FUNCTION__))
;
6289 InputInfo Input = Inputs.front();
6290
6291 // Get the type.
6292 CmdArgs.push_back(TCArgs.MakeArgString(
6293 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
6294
6295 // Get the targets.
6296 SmallString<128> Triples;
6297 Triples += "-targets=";
6298 auto DepInfo = UA.getDependentActionsInfo();
6299 for (unsigned I = 0; I < DepInfo.size(); ++I) {
6300 if (I)
6301 Triples += ',';
6302
6303 auto &Dep = DepInfo[I];
6304 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
6305 Triples += '-';
6306 Triples += Dep.DependentToolChain->getTriple().normalize();
6307 if (Dep.DependentOffloadKind == Action::OFK_HIP &&
6308 !Dep.DependentBoundArch.empty()) {
6309 Triples += '-';
6310 Triples += Dep.DependentBoundArch;
6311 }
6312 }
6313
6314 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6315
6316 // Get bundled file command.
6317 CmdArgs.push_back(
6318 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
6319
6320 // Get unbundled files command.
6321 SmallString<128> UB;
6322 UB += "-outputs=";
6323 for (unsigned I = 0; I < Outputs.size(); ++I) {
6324 if (I)
6325 UB += ',';
6326 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
6327 }
6328 CmdArgs.push_back(TCArgs.MakeArgString(UB));
6329 CmdArgs.push_back("-unbundle");
6330
6331 // All the inputs are encoded as commands.
6332 C.addCommand(llvm::make_unique<Command>(
6333 JA, *this,
6334 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6335 CmdArgs, None));
6336}