Bug Summary

File:tools/clang/lib/Driver/ToolChains/Clang.cpp
Warning:line 3427, 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-8/lib/clang/8.0.0 -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-8~svn350071/build-llvm/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn350071/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/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/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-8~svn350071/build-llvm/tools/clang/lib/Driver -fdebug-prefix-map=/build/llvm-toolchain-snapshot-8~svn350071=. -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-2018-12-27-042839-1215-1 -x c++ /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp -faddrsig
1//===--- LLVM.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "Clang.h"
11#include "Arch/AArch64.h"
12#include "Arch/ARM.h"
13#include "Arch/Mips.h"
14#include "Arch/PPC.h"
15#include "Arch/RISCV.h"
16#include "Arch/Sparc.h"
17#include "Arch/SystemZ.h"
18#include "Arch/X86.h"
19#include "AMDGPU.h"
20#include "CommonArgs.h"
21#include "Hexagon.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 }
368
369 // Find the last of each feature.
370 llvm::StringMap<unsigned> LastOpt;
371 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
372 StringRef Name = Features[I];
373 assert(Name[0] == '-' || Name[0] == '+')((Name[0] == '-' || Name[0] == '+') ? static_cast<void>
(0) : __assert_fail ("Name[0] == '-' || Name[0] == '+'", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 373, __PRETTY_FUNCTION__))
;
374 LastOpt[Name.drop_front(1)] = I;
375 }
376
377 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
378 // If this feature was overridden, ignore it.
379 StringRef Name = Features[I];
380 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
381 assert(LastI != LastOpt.end())((LastI != LastOpt.end()) ? static_cast<void> (0) : __assert_fail
("LastI != LastOpt.end()", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 381, __PRETTY_FUNCTION__))
;
382 unsigned Last = LastI->second;
383 if (Last != I)
384 continue;
385
386 CmdArgs.push_back("-target-feature");
387 CmdArgs.push_back(Name.data());
388 }
389}
390
391static bool
392shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
393 const llvm::Triple &Triple) {
394 // We use the zero-cost exception tables for Objective-C if the non-fragile
395 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
396 // later.
397 if (runtime.isNonFragile())
398 return true;
399
400 if (!Triple.isMacOSX())
401 return false;
402
403 return (!Triple.isMacOSXVersionLT(10, 5) &&
404 (Triple.getArch() == llvm::Triple::x86_64 ||
405 Triple.getArch() == llvm::Triple::arm));
406}
407
408/// Adds exception related arguments to the driver command arguments. There's a
409/// master flag, -fexceptions and also language specific flags to enable/disable
410/// C++ and Objective-C exceptions. This makes it possible to for example
411/// disable C++ exceptions but enable Objective-C exceptions.
412static void addExceptionArgs(const ArgList &Args, types::ID InputType,
413 const ToolChain &TC, bool KernelOrKext,
414 const ObjCRuntime &objcRuntime,
415 ArgStringList &CmdArgs) {
416 const llvm::Triple &Triple = TC.getTriple();
417
418 if (KernelOrKext) {
419 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
420 // arguments now to avoid warnings about unused arguments.
421 Args.ClaimAllArgs(options::OPT_fexceptions);
422 Args.ClaimAllArgs(options::OPT_fno_exceptions);
423 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
424 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
425 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
426 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
427 return;
428 }
429
430 // See if the user explicitly enabled exceptions.
431 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
432 false);
433
434 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
435 // is not necessarily sensible, but follows GCC.
436 if (types::isObjC(InputType) &&
437 Args.hasFlag(options::OPT_fobjc_exceptions,
438 options::OPT_fno_objc_exceptions, true)) {
439 CmdArgs.push_back("-fobjc-exceptions");
440
441 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
442 }
443
444 if (types::isCXX(InputType)) {
445 // Disable C++ EH by default on XCore and PS4.
446 bool CXXExceptionsEnabled =
447 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
448 Arg *ExceptionArg = Args.getLastArg(
449 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
450 options::OPT_fexceptions, options::OPT_fno_exceptions);
451 if (ExceptionArg)
452 CXXExceptionsEnabled =
453 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
454 ExceptionArg->getOption().matches(options::OPT_fexceptions);
455
456 if (CXXExceptionsEnabled) {
457 CmdArgs.push_back("-fcxx-exceptions");
458
459 EH = true;
460 }
461 }
462
463 if (EH)
464 CmdArgs.push_back("-fexceptions");
465}
466
467static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
468 bool Default = true;
469 if (TC.getTriple().isOSDarwin()) {
470 // The native darwin assembler doesn't support the linker_option directives,
471 // so we disable them if we think the .s file will be passed to it.
472 Default = TC.useIntegratedAs();
473 }
474 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
475 Default);
476}
477
478static bool ShouldDisableDwarfDirectory(const ArgList &Args,
479 const ToolChain &TC) {
480 bool UseDwarfDirectory =
481 Args.hasFlag(options::OPT_fdwarf_directory_asm,
482 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
483 return !UseDwarfDirectory;
484}
485
486// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
487// to the corresponding DebugInfoKind.
488static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
489 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 490, __PRETTY_FUNCTION__))
490 "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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 490, __PRETTY_FUNCTION__))
;
491 if (A.getOption().matches(options::OPT_g0) ||
492 A.getOption().matches(options::OPT_ggdb0))
493 return codegenoptions::NoDebugInfo;
494 if (A.getOption().matches(options::OPT_gline_tables_only) ||
495 A.getOption().matches(options::OPT_ggdb1))
496 return codegenoptions::DebugLineTablesOnly;
497 if (A.getOption().matches(options::OPT_gline_directives_only))
498 return codegenoptions::DebugDirectivesOnly;
499 return codegenoptions::LimitedDebugInfo;
500}
501
502static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
503 switch (Triple.getArch()){
504 default:
505 return false;
506 case llvm::Triple::arm:
507 case llvm::Triple::thumb:
508 // ARM Darwin targets require a frame pointer to be always present to aid
509 // offline debugging via backtraces.
510 return Triple.isOSDarwin();
511 }
512}
513
514static bool useFramePointerForTargetByDefault(const ArgList &Args,
515 const llvm::Triple &Triple) {
516 switch (Triple.getArch()) {
517 case llvm::Triple::xcore:
518 case llvm::Triple::wasm32:
519 case llvm::Triple::wasm64:
520 // XCore never wants frame pointers, regardless of OS.
521 // WebAssembly never wants frame pointers.
522 return false;
523 case llvm::Triple::riscv32:
524 case llvm::Triple::riscv64:
525 return !areOptimizationsEnabled(Args);
526 default:
527 break;
528 }
529
530 if (Triple.isOSNetBSD()) {
531 return !areOptimizationsEnabled(Args);
532 }
533
534 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
535 Triple.isOSHurd()) {
536 switch (Triple.getArch()) {
537 // Don't use a frame pointer on linux if optimizing for certain targets.
538 case llvm::Triple::mips64:
539 case llvm::Triple::mips64el:
540 case llvm::Triple::mips:
541 case llvm::Triple::mipsel:
542 case llvm::Triple::ppc:
543 case llvm::Triple::ppc64:
544 case llvm::Triple::ppc64le:
545 case llvm::Triple::systemz:
546 case llvm::Triple::x86:
547 case llvm::Triple::x86_64:
548 return !areOptimizationsEnabled(Args);
549 default:
550 return true;
551 }
552 }
553
554 if (Triple.isOSWindows()) {
555 switch (Triple.getArch()) {
556 case llvm::Triple::x86:
557 return !areOptimizationsEnabled(Args);
558 case llvm::Triple::x86_64:
559 return Triple.isOSBinFormatMachO();
560 case llvm::Triple::arm:
561 case llvm::Triple::thumb:
562 // Windows on ARM builds with FPO disabled to aid fast stack walking
563 return true;
564 default:
565 // All other supported Windows ISAs use xdata unwind information, so frame
566 // pointers are not generally useful.
567 return false;
568 }
569 }
570
571 return true;
572}
573
574static bool shouldUseFramePointer(const ArgList &Args,
575 const llvm::Triple &Triple) {
576 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
577 options::OPT_fomit_frame_pointer))
578 return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
579 mustUseNonLeafFramePointerForTarget(Triple);
580
581 if (Args.hasArg(options::OPT_pg))
582 return true;
583
584 return useFramePointerForTargetByDefault(Args, Triple);
585}
586
587static bool shouldUseLeafFramePointer(const ArgList &Args,
588 const llvm::Triple &Triple) {
589 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
590 options::OPT_momit_leaf_frame_pointer))
591 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
592
593 if (Args.hasArg(options::OPT_pg))
594 return true;
595
596 if (Triple.isPS4CPU())
597 return false;
598
599 return useFramePointerForTargetByDefault(Args, Triple);
600}
601
602/// Add a CC1 option to specify the debug compilation directory.
603static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
604 SmallString<128> cwd;
605 if (!llvm::sys::fs::current_path(cwd)) {
606 CmdArgs.push_back("-fdebug-compilation-dir");
607 CmdArgs.push_back(Args.MakeArgString(cwd));
608 }
609}
610
611/// Add a CC1 and CC1AS option to specify the debug file path prefix map.
612static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
613 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
614 StringRef Map = A->getValue();
615 if (Map.find('=') == StringRef::npos)
616 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
617 else
618 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
619 A->claim();
620 }
621}
622
623/// Vectorize at all optimization levels greater than 1 except for -Oz.
624/// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
625static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
626 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
627 if (A->getOption().matches(options::OPT_O4) ||
628 A->getOption().matches(options::OPT_Ofast))
629 return true;
630
631 if (A->getOption().matches(options::OPT_O0))
632 return false;
633
634 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 634, __PRETTY_FUNCTION__))
;
635
636 // Vectorize -Os.
637 StringRef S(A->getValue());
638 if (S == "s")
639 return true;
640
641 // Don't vectorize -Oz, unless it's the slp vectorizer.
642 if (S == "z")
643 return isSlpVec;
644
645 unsigned OptLevel = 0;
646 if (S.getAsInteger(10, OptLevel))
647 return false;
648
649 return OptLevel > 1;
650 }
651
652 return false;
653}
654
655/// Add -x lang to \p CmdArgs for \p Input.
656static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
657 ArgStringList &CmdArgs) {
658 // When using -verify-pch, we don't want to provide the type
659 // 'precompiled-header' if it was inferred from the file extension
660 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
661 return;
662
663 CmdArgs.push_back("-x");
664 if (Args.hasArg(options::OPT_rewrite_objc))
665 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
666 else {
667 // Map the driver type to the frontend type. This is mostly an identity
668 // mapping, except that the distinction between module interface units
669 // and other source files does not exist at the frontend layer.
670 const char *ClangType;
671 switch (Input.getType()) {
672 case types::TY_CXXModule:
673 ClangType = "c++";
674 break;
675 case types::TY_PP_CXXModule:
676 ClangType = "c++-cpp-output";
677 break;
678 default:
679 ClangType = types::getTypeName(Input.getType());
680 break;
681 }
682 CmdArgs.push_back(ClangType);
683 }
684}
685
686static void appendUserToPath(SmallVectorImpl<char> &Result) {
687#ifdef LLVM_ON_UNIX1
688 const char *Username = getenv("LOGNAME");
689#else
690 const char *Username = getenv("USERNAME");
691#endif
692 if (Username) {
693 // Validate that LoginName can be used in a path, and get its length.
694 size_t Len = 0;
695 for (const char *P = Username; *P; ++P, ++Len) {
696 if (!clang::isAlphanumeric(*P) && *P != '_') {
697 Username = nullptr;
698 break;
699 }
700 }
701
702 if (Username && Len > 0) {
703 Result.append(Username, Username + Len);
704 return;
705 }
706 }
707
708// Fallback to user id.
709#ifdef LLVM_ON_UNIX1
710 std::string UID = llvm::utostr(getuid());
711#else
712 // FIXME: Windows seems to have an 'SID' that might work.
713 std::string UID = "9999";
714#endif
715 Result.append(UID.begin(), UID.end());
716}
717
718static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
719 const InputInfo &Output, const ArgList &Args,
720 ArgStringList &CmdArgs) {
721
722 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
723 options::OPT_fprofile_generate_EQ,
724 options::OPT_fno_profile_generate);
725 if (PGOGenerateArg &&
726 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
727 PGOGenerateArg = nullptr;
728
729 auto *ProfileGenerateArg = Args.getLastArg(
730 options::OPT_fprofile_instr_generate,
731 options::OPT_fprofile_instr_generate_EQ,
732 options::OPT_fno_profile_instr_generate);
733 if (ProfileGenerateArg &&
734 ProfileGenerateArg->getOption().matches(
735 options::OPT_fno_profile_instr_generate))
736 ProfileGenerateArg = nullptr;
737
738 if (PGOGenerateArg && ProfileGenerateArg)
739 D.Diag(diag::err_drv_argument_not_allowed_with)
740 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
741
742 auto *ProfileUseArg = getLastProfileUseArg(Args);
743
744 if (PGOGenerateArg && ProfileUseArg)
745 D.Diag(diag::err_drv_argument_not_allowed_with)
746 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
747
748 if (ProfileGenerateArg && ProfileUseArg)
749 D.Diag(diag::err_drv_argument_not_allowed_with)
750 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
751
752 if (ProfileGenerateArg) {
753 if (ProfileGenerateArg->getOption().matches(
754 options::OPT_fprofile_instr_generate_EQ))
755 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
756 ProfileGenerateArg->getValue()));
757 // The default is to use Clang Instrumentation.
758 CmdArgs.push_back("-fprofile-instrument=clang");
759 }
760
761 if (PGOGenerateArg) {
762 CmdArgs.push_back("-fprofile-instrument=llvm");
763 if (PGOGenerateArg->getOption().matches(
764 options::OPT_fprofile_generate_EQ)) {
765 SmallString<128> Path(PGOGenerateArg->getValue());
766 llvm::sys::path::append(Path, "default_%m.profraw");
767 CmdArgs.push_back(
768 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
769 }
770 }
771
772 if (ProfileUseArg) {
773 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
774 CmdArgs.push_back(Args.MakeArgString(
775 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
776 else if ((ProfileUseArg->getOption().matches(
777 options::OPT_fprofile_use_EQ) ||
778 ProfileUseArg->getOption().matches(
779 options::OPT_fprofile_instr_use))) {
780 SmallString<128> Path(
781 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
782 if (Path.empty() || llvm::sys::fs::is_directory(Path))
783 llvm::sys::path::append(Path, "default.profdata");
784 CmdArgs.push_back(
785 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
786 }
787 }
788
789 if (Args.hasArg(options::OPT_ftest_coverage) ||
790 Args.hasArg(options::OPT_coverage))
791 CmdArgs.push_back("-femit-coverage-notes");
792 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
793 false) ||
794 Args.hasArg(options::OPT_coverage))
795 CmdArgs.push_back("-femit-coverage-data");
796
797 if (Args.hasFlag(options::OPT_fcoverage_mapping,
798 options::OPT_fno_coverage_mapping, false)) {
799 if (!ProfileGenerateArg)
800 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
801 << "-fcoverage-mapping"
802 << "-fprofile-instr-generate";
803
804 CmdArgs.push_back("-fcoverage-mapping");
805 }
806
807 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
808 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
809 if (!Args.hasArg(options::OPT_coverage))
810 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
811 << "-fprofile-exclude-files="
812 << "--coverage";
813
814 StringRef v = Arg->getValue();
815 CmdArgs.push_back(
816 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
817 }
818
819 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
820 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
821 if (!Args.hasArg(options::OPT_coverage))
822 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
823 << "-fprofile-filter-files="
824 << "--coverage";
825
826 StringRef v = Arg->getValue();
827 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
828 }
829
830 if (C.getArgs().hasArg(options::OPT_c) ||
831 C.getArgs().hasArg(options::OPT_S)) {
832 if (Output.isFilename()) {
833 CmdArgs.push_back("-coverage-notes-file");
834 SmallString<128> OutputFilename;
835 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
836 OutputFilename = FinalOutput->getValue();
837 else
838 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
839 SmallString<128> CoverageFilename = OutputFilename;
840 if (llvm::sys::path::is_relative(CoverageFilename)) {
841 SmallString<128> Pwd;
842 if (!llvm::sys::fs::current_path(Pwd)) {
843 llvm::sys::path::append(Pwd, CoverageFilename);
844 CoverageFilename.swap(Pwd);
845 }
846 }
847 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
848 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
849
850 // Leave -fprofile-dir= an unused argument unless .gcda emission is
851 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
852 // the flag used. There is no -fno-profile-dir, so the user has no
853 // targeted way to suppress the warning.
854 if (Args.hasArg(options::OPT_fprofile_arcs) ||
855 Args.hasArg(options::OPT_coverage)) {
856 CmdArgs.push_back("-coverage-data-file");
857 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
858 CoverageFilename = FProfileDir->getValue();
859 llvm::sys::path::append(CoverageFilename, OutputFilename);
860 }
861 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
862 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
863 }
864 }
865 }
866}
867
868/// Check whether the given input tree contains any compilation actions.
869static bool ContainsCompileAction(const Action *A) {
870 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
871 return true;
872
873 for (const auto &AI : A->inputs())
874 if (ContainsCompileAction(AI))
875 return true;
876
877 return false;
878}
879
880/// Check if -relax-all should be passed to the internal assembler.
881/// This is done by default when compiling non-assembler source with -O0.
882static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
883 bool RelaxDefault = true;
884
885 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
886 RelaxDefault = A->getOption().matches(options::OPT_O0);
887
888 if (RelaxDefault) {
889 RelaxDefault = false;
890 for (const auto &Act : C.getActions()) {
891 if (ContainsCompileAction(Act)) {
892 RelaxDefault = true;
893 break;
894 }
895 }
896 }
897
898 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
899 RelaxDefault);
900}
901
902// Extract the integer N from a string spelled "-dwarf-N", returning 0
903// on mismatch. The StringRef input (rather than an Arg) allows
904// for use by the "-Xassembler" option parser.
905static unsigned DwarfVersionNum(StringRef ArgValue) {
906 return llvm::StringSwitch<unsigned>(ArgValue)
907 .Case("-gdwarf-2", 2)
908 .Case("-gdwarf-3", 3)
909 .Case("-gdwarf-4", 4)
910 .Case("-gdwarf-5", 5)
911 .Default(0);
912}
913
914static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
915 codegenoptions::DebugInfoKind DebugInfoKind,
916 unsigned DwarfVersion,
917 llvm::DebuggerKind DebuggerTuning) {
918 switch (DebugInfoKind) {
919 case codegenoptions::DebugDirectivesOnly:
920 CmdArgs.push_back("-debug-info-kind=line-directives-only");
921 break;
922 case codegenoptions::DebugLineTablesOnly:
923 CmdArgs.push_back("-debug-info-kind=line-tables-only");
924 break;
925 case codegenoptions::LimitedDebugInfo:
926 CmdArgs.push_back("-debug-info-kind=limited");
927 break;
928 case codegenoptions::FullDebugInfo:
929 CmdArgs.push_back("-debug-info-kind=standalone");
930 break;
931 default:
932 break;
933 }
934 if (DwarfVersion > 0)
935 CmdArgs.push_back(
936 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
937 switch (DebuggerTuning) {
938 case llvm::DebuggerKind::GDB:
939 CmdArgs.push_back("-debugger-tuning=gdb");
940 break;
941 case llvm::DebuggerKind::LLDB:
942 CmdArgs.push_back("-debugger-tuning=lldb");
943 break;
944 case llvm::DebuggerKind::SCE:
945 CmdArgs.push_back("-debugger-tuning=sce");
946 break;
947 default:
948 break;
949 }
950}
951
952static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
953 const Driver &D, const ToolChain &TC) {
954 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 954, __PRETTY_FUNCTION__))
;
955 if (TC.supportsDebugInfoOption(A))
956 return true;
957 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
958 << A->getAsString(Args) << TC.getTripleString();
959 return false;
960}
961
962static void RenderDebugInfoCompressionArgs(const ArgList &Args,
963 ArgStringList &CmdArgs,
964 const Driver &D,
965 const ToolChain &TC) {
966 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
967 if (!A)
968 return;
969 if (checkDebugInfoOption(A, Args, D, TC)) {
970 if (A->getOption().getID() == options::OPT_gz) {
971 if (llvm::zlib::isAvailable())
972 CmdArgs.push_back("-compress-debug-sections");
973 else
974 D.Diag(diag::warn_debug_compression_unavailable);
975 return;
976 }
977
978 StringRef Value = A->getValue();
979 if (Value == "none") {
980 CmdArgs.push_back("-compress-debug-sections=none");
981 } else if (Value == "zlib" || Value == "zlib-gnu") {
982 if (llvm::zlib::isAvailable()) {
983 CmdArgs.push_back(
984 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
985 } else {
986 D.Diag(diag::warn_debug_compression_unavailable);
987 }
988 } else {
989 D.Diag(diag::err_drv_unsupported_option_argument)
990 << A->getOption().getName() << Value;
991 }
992 }
993}
994
995static const char *RelocationModelName(llvm::Reloc::Model Model) {
996 switch (Model) {
997 case llvm::Reloc::Static:
998 return "static";
999 case llvm::Reloc::PIC_:
1000 return "pic";
1001 case llvm::Reloc::DynamicNoPIC:
1002 return "dynamic-no-pic";
1003 case llvm::Reloc::ROPI:
1004 return "ropi";
1005 case llvm::Reloc::RWPI:
1006 return "rwpi";
1007 case llvm::Reloc::ROPI_RWPI:
1008 return "ropi-rwpi";
1009 }
1010 llvm_unreachable("Unknown Reloc::Model kind")::llvm::llvm_unreachable_internal("Unknown Reloc::Model kind"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1010)
;
1011}
1012
1013void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
1014 const Driver &D, const ArgList &Args,
1015 ArgStringList &CmdArgs,
1016 const InputInfo &Output,
1017 const InputInfoList &Inputs) const {
1018 Arg *A;
1019 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1020
1021 CheckPreprocessingOptions(D, Args);
1022
1023 Args.AddLastArg(CmdArgs, options::OPT_C);
1024 Args.AddLastArg(CmdArgs, options::OPT_CC);
1025
1026 // Handle dependency file generation.
1027 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
1028 (A = Args.getLastArg(options::OPT_MD)) ||
1029 (A = Args.getLastArg(options::OPT_MMD))) {
1030 // Determine the output location.
1031 const char *DepFile;
1032 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1033 DepFile = MF->getValue();
1034 C.addFailureResultFile(DepFile, &JA);
1035 } else if (Output.getType() == types::TY_Dependencies) {
1036 DepFile = Output.getFilename();
1037 } else if (A->getOption().matches(options::OPT_M) ||
1038 A->getOption().matches(options::OPT_MM)) {
1039 DepFile = "-";
1040 } else {
1041 DepFile = getDependencyFileName(Args, Inputs);
1042 C.addFailureResultFile(DepFile, &JA);
1043 }
1044 CmdArgs.push_back("-dependency-file");
1045 CmdArgs.push_back(DepFile);
1046
1047 // Add a default target if one wasn't specified.
1048 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1049 const char *DepTarget;
1050
1051 // If user provided -o, that is the dependency target, except
1052 // when we are only generating a dependency file.
1053 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1054 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1055 DepTarget = OutputOpt->getValue();
1056 } else {
1057 // Otherwise derive from the base input.
1058 //
1059 // FIXME: This should use the computed output file location.
1060 SmallString<128> P(Inputs[0].getBaseInput());
1061 llvm::sys::path::replace_extension(P, "o");
1062 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1063 }
1064
1065 if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1066 CmdArgs.push_back("-w");
1067 }
1068 CmdArgs.push_back("-MT");
1069 SmallString<128> Quoted;
1070 QuoteTarget(DepTarget, Quoted);
1071 CmdArgs.push_back(Args.MakeArgString(Quoted));
1072 }
1073
1074 if (A->getOption().matches(options::OPT_M) ||
1075 A->getOption().matches(options::OPT_MD))
1076 CmdArgs.push_back("-sys-header-deps");
1077 if ((isa<PrecompileJobAction>(JA) &&
1078 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1079 Args.hasArg(options::OPT_fmodule_file_deps))
1080 CmdArgs.push_back("-module-file-deps");
1081 }
1082
1083 if (Args.hasArg(options::OPT_MG)) {
1084 if (!A || A->getOption().matches(options::OPT_MD) ||
1085 A->getOption().matches(options::OPT_MMD))
1086 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1087 CmdArgs.push_back("-MG");
1088 }
1089
1090 Args.AddLastArg(CmdArgs, options::OPT_MP);
1091 Args.AddLastArg(CmdArgs, options::OPT_MV);
1092
1093 // Convert all -MQ <target> args to -MT <quoted target>
1094 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1095 A->claim();
1096
1097 if (A->getOption().matches(options::OPT_MQ)) {
1098 CmdArgs.push_back("-MT");
1099 SmallString<128> Quoted;
1100 QuoteTarget(A->getValue(), Quoted);
1101 CmdArgs.push_back(Args.MakeArgString(Quoted));
1102
1103 // -MT flag - no change
1104 } else {
1105 A->render(Args, CmdArgs);
1106 }
1107 }
1108
1109 // Add offload include arguments specific for CUDA. This must happen before
1110 // we -I or -include anything else, because we must pick up the CUDA headers
1111 // from the particular CUDA installation, rather than from e.g.
1112 // /usr/local/include.
1113 if (JA.isOffloading(Action::OFK_Cuda))
1114 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1115
1116 // Add -i* options, and automatically translate to
1117 // -include-pch/-include-pth for transparent PCH support. It's
1118 // wonky, but we include looking for .gch so we can support seamless
1119 // replacement into a build system already set up to be generating
1120 // .gch files.
1121
1122 if (getToolChain().getDriver().IsCLMode()) {
1123 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1124 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1125 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1126 JA.getKind() <= Action::AssembleJobClass) {
1127 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1128 }
1129 if (YcArg || YuArg) {
1130 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1131 if (!isa<PrecompileJobAction>(JA)) {
1132 CmdArgs.push_back("-include-pch");
1133 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1134 C, !ThroughHeader.empty()
1135 ? ThroughHeader
1136 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1137 }
1138
1139 if (ThroughHeader.empty()) {
1140 CmdArgs.push_back(Args.MakeArgString(
1141 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1142 } else {
1143 CmdArgs.push_back(
1144 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1145 }
1146 }
1147 }
1148
1149 bool RenderedImplicitInclude = false;
1150 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1151 if (A->getOption().matches(options::OPT_include)) {
1152 // Handling of gcc-style gch precompiled headers.
1153 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1154 RenderedImplicitInclude = true;
1155
1156 bool FoundPCH = false;
1157 SmallString<128> P(A->getValue());
1158 // We want the files to have a name like foo.h.pch. Add a dummy extension
1159 // so that replace_extension does the right thing.
1160 P += ".dummy";
1161 llvm::sys::path::replace_extension(P, "pch");
1162 if (llvm::sys::fs::exists(P))
1163 FoundPCH = true;
1164
1165 if (!FoundPCH) {
1166 llvm::sys::path::replace_extension(P, "gch");
1167 if (llvm::sys::fs::exists(P)) {
1168 FoundPCH = true;
1169 }
1170 }
1171
1172 if (FoundPCH) {
1173 if (IsFirstImplicitInclude) {
1174 A->claim();
1175 CmdArgs.push_back("-include-pch");
1176 CmdArgs.push_back(Args.MakeArgString(P));
1177 continue;
1178 } else {
1179 // Ignore the PCH if not first on command line and emit warning.
1180 D.Diag(diag::warn_drv_pch_not_first_include) << P
1181 << A->getAsString(Args);
1182 }
1183 }
1184 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1185 // Handling of paths which must come late. These entries are handled by
1186 // the toolchain itself after the resource dir is inserted in the right
1187 // search order.
1188 // Do not claim the argument so that the use of the argument does not
1189 // silently go unnoticed on toolchains which do not honour the option.
1190 continue;
1191 }
1192
1193 // Not translated, render as usual.
1194 A->claim();
1195 A->render(Args, CmdArgs);
1196 }
1197
1198 Args.AddAllArgs(CmdArgs,
1199 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1200 options::OPT_F, options::OPT_index_header_map});
1201
1202 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1203
1204 // FIXME: There is a very unfortunate problem here, some troubled
1205 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1206 // really support that we would have to parse and then translate
1207 // those options. :(
1208 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1209 options::OPT_Xpreprocessor);
1210
1211 // -I- is a deprecated GCC feature, reject it.
1212 if (Arg *A = Args.getLastArg(options::OPT_I_))
1213 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1214
1215 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1216 // -isysroot to the CC1 invocation.
1217 StringRef sysroot = C.getSysRoot();
1218 if (sysroot != "") {
1219 if (!Args.hasArg(options::OPT_isysroot)) {
1220 CmdArgs.push_back("-isysroot");
1221 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1222 }
1223 }
1224
1225 // Parse additional include paths from environment variables.
1226 // FIXME: We should probably sink the logic for handling these from the
1227 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1228 // CPATH - included following the user specified includes (but prior to
1229 // builtin and standard includes).
1230 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1231 // C_INCLUDE_PATH - system includes enabled when compiling C.
1232 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1233 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1234 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1235 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1236 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1237 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1238 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1239
1240 // While adding the include arguments, we also attempt to retrieve the
1241 // arguments of related offloading toolchains or arguments that are specific
1242 // of an offloading programming model.
1243
1244 // Add C++ include arguments, if needed.
1245 if (types::isCXX(Inputs[0].getType()))
1246 forAllAssociatedToolChains(C, JA, getToolChain(),
1247 [&Args, &CmdArgs](const ToolChain &TC) {
1248 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1249 });
1250
1251 // Add system include arguments for all targets but IAMCU.
1252 if (!IsIAMCU)
1253 forAllAssociatedToolChains(C, JA, getToolChain(),
1254 [&Args, &CmdArgs](const ToolChain &TC) {
1255 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1256 });
1257 else {
1258 // For IAMCU add special include arguments.
1259 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1260 }
1261}
1262
1263// FIXME: Move to target hook.
1264static bool isSignedCharDefault(const llvm::Triple &Triple) {
1265 switch (Triple.getArch()) {
1266 default:
1267 return true;
1268
1269 case llvm::Triple::aarch64:
1270 case llvm::Triple::aarch64_be:
1271 case llvm::Triple::arm:
1272 case llvm::Triple::armeb:
1273 case llvm::Triple::thumb:
1274 case llvm::Triple::thumbeb:
1275 if (Triple.isOSDarwin() || Triple.isOSWindows())
1276 return true;
1277 return false;
1278
1279 case llvm::Triple::ppc:
1280 case llvm::Triple::ppc64:
1281 if (Triple.isOSDarwin())
1282 return true;
1283 return false;
1284
1285 case llvm::Triple::hexagon:
1286 case llvm::Triple::ppc64le:
1287 case llvm::Triple::riscv32:
1288 case llvm::Triple::riscv64:
1289 case llvm::Triple::systemz:
1290 case llvm::Triple::xcore:
1291 return false;
1292 }
1293}
1294
1295static bool isNoCommonDefault(const llvm::Triple &Triple) {
1296 switch (Triple.getArch()) {
1297 default:
1298 if (Triple.isOSFuchsia())
1299 return true;
1300 return false;
1301
1302 case llvm::Triple::xcore:
1303 case llvm::Triple::wasm32:
1304 case llvm::Triple::wasm64:
1305 return true;
1306 }
1307}
1308
1309namespace {
1310void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1311 ArgStringList &CmdArgs) {
1312 // Select the ABI to use.
1313 // FIXME: Support -meabi.
1314 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1315 const char *ABIName = nullptr;
1316 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1317 ABIName = A->getValue();
1318 } else {
1319 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1320 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1321 }
1322
1323 CmdArgs.push_back("-target-abi");
1324 CmdArgs.push_back(ABIName);
1325}
1326}
1327
1328void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1329 ArgStringList &CmdArgs, bool KernelOrKext) const {
1330 RenderARMABI(Triple, Args, CmdArgs);
1331
1332 // Determine floating point ABI from the options & target defaults.
1333 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1334 if (ABI == arm::FloatABI::Soft) {
1335 // Floating point operations and argument passing are soft.
1336 // FIXME: This changes CPP defines, we need -target-soft-float.
1337 CmdArgs.push_back("-msoft-float");
1338 CmdArgs.push_back("-mfloat-abi");
1339 CmdArgs.push_back("soft");
1340 } else if (ABI == arm::FloatABI::SoftFP) {
1341 // Floating point operations are hard, but argument passing is soft.
1342 CmdArgs.push_back("-mfloat-abi");
1343 CmdArgs.push_back("soft");
1344 } else {
1345 // Floating point operations and argument passing are hard.
1346 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1346, __PRETTY_FUNCTION__))
;
1347 CmdArgs.push_back("-mfloat-abi");
1348 CmdArgs.push_back("hard");
1349 }
1350
1351 // Forward the -mglobal-merge option for explicit control over the pass.
1352 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1353 options::OPT_mno_global_merge)) {
1354 CmdArgs.push_back("-mllvm");
1355 if (A->getOption().matches(options::OPT_mno_global_merge))
1356 CmdArgs.push_back("-arm-global-merge=false");
1357 else
1358 CmdArgs.push_back("-arm-global-merge=true");
1359 }
1360
1361 if (!Args.hasFlag(options::OPT_mimplicit_float,
1362 options::OPT_mno_implicit_float, true))
1363 CmdArgs.push_back("-no-implicit-float");
1364}
1365
1366void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1367 const ArgList &Args, bool KernelOrKext,
1368 ArgStringList &CmdArgs) const {
1369 const ToolChain &TC = getToolChain();
1370
1371 // Add the target features
1372 getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1373
1374 // Add target specific flags.
1375 switch (TC.getArch()) {
1376 default:
1377 break;
1378
1379 case llvm::Triple::arm:
1380 case llvm::Triple::armeb:
1381 case llvm::Triple::thumb:
1382 case llvm::Triple::thumbeb:
1383 // Use the effective triple, which takes into account the deployment target.
1384 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1385 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1386 break;
1387
1388 case llvm::Triple::aarch64:
1389 case llvm::Triple::aarch64_be:
1390 AddAArch64TargetArgs(Args, CmdArgs);
1391 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1392 break;
1393
1394 case llvm::Triple::mips:
1395 case llvm::Triple::mipsel:
1396 case llvm::Triple::mips64:
1397 case llvm::Triple::mips64el:
1398 AddMIPSTargetArgs(Args, CmdArgs);
1399 break;
1400
1401 case llvm::Triple::ppc:
1402 case llvm::Triple::ppc64:
1403 case llvm::Triple::ppc64le:
1404 AddPPCTargetArgs(Args, CmdArgs);
1405 break;
1406
1407 case llvm::Triple::riscv32:
1408 case llvm::Triple::riscv64:
1409 AddRISCVTargetArgs(Args, CmdArgs);
1410 break;
1411
1412 case llvm::Triple::sparc:
1413 case llvm::Triple::sparcel:
1414 case llvm::Triple::sparcv9:
1415 AddSparcTargetArgs(Args, CmdArgs);
1416 break;
1417
1418 case llvm::Triple::systemz:
1419 AddSystemZTargetArgs(Args, CmdArgs);
1420 break;
1421
1422 case llvm::Triple::x86:
1423 case llvm::Triple::x86_64:
1424 AddX86TargetArgs(Args, CmdArgs);
1425 break;
1426
1427 case llvm::Triple::lanai:
1428 AddLanaiTargetArgs(Args, CmdArgs);
1429 break;
1430
1431 case llvm::Triple::hexagon:
1432 AddHexagonTargetArgs(Args, CmdArgs);
1433 break;
1434
1435 case llvm::Triple::wasm32:
1436 case llvm::Triple::wasm64:
1437 AddWebAssemblyTargetArgs(Args, CmdArgs);
1438 break;
1439 }
1440}
1441
1442// Parse -mbranch-protection=<protection>[+<protection>]* where
1443// <protection> ::= standard | none | [bti,pac-ret[+b-key,+leaf]*]
1444// Returns a triple of (return address signing Scope, signing key, require
1445// landing pads)
1446static std::tuple<StringRef, StringRef, bool>
1447ParseAArch64BranchProtection(const Driver &D, const ArgList &Args,
1448 const Arg *A) {
1449 StringRef Scope = "none";
1450 StringRef Key = "a_key";
1451 bool IndirectBranches = false;
1452
1453 StringRef Value = A->getValue();
1454 // This maps onto -mbranch-protection=<scope>+<key>
1455
1456 if (Value.equals("standard")) {
1457 Scope = "non-leaf";
1458 Key = "a_key";
1459 IndirectBranches = true;
1460
1461 } else if (!Value.equals("none")) {
1462 SmallVector<StringRef, 4> BranchProtection;
1463 StringRef(A->getValue()).split(BranchProtection, '+');
1464
1465 auto Protection = BranchProtection.begin();
1466 while (Protection != BranchProtection.end()) {
1467 if (Protection->equals("bti"))
1468 IndirectBranches = true;
1469 else if (Protection->equals("pac-ret")) {
1470 Scope = "non-leaf";
1471 while (++Protection != BranchProtection.end()) {
1472 // Inner loop as "leaf" and "b-key" options must only appear attached
1473 // to pac-ret.
1474 if (Protection->equals("leaf"))
1475 Scope = "all";
1476 else if (Protection->equals("b-key"))
1477 Key = "b_key";
1478 else
1479 break;
1480 }
1481 Protection--;
1482 } else
1483 D.Diag(diag::err_invalid_branch_protection)
1484 << *Protection << A->getAsString(Args);
1485 Protection++;
1486 }
1487 }
1488
1489 return std::make_tuple(Scope, Key, IndirectBranches);
1490}
1491
1492namespace {
1493void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1494 ArgStringList &CmdArgs) {
1495 const char *ABIName = nullptr;
1496 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1497 ABIName = A->getValue();
1498 else if (Triple.isOSDarwin())
1499 ABIName = "darwinpcs";
1500 else
1501 ABIName = "aapcs";
1502
1503 CmdArgs.push_back("-target-abi");
1504 CmdArgs.push_back(ABIName);
1505}
1506}
1507
1508void Clang::AddAArch64TargetArgs(const ArgList &Args,
1509 ArgStringList &CmdArgs) const {
1510 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1511
1512 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1513 Args.hasArg(options::OPT_mkernel) ||
1514 Args.hasArg(options::OPT_fapple_kext))
1515 CmdArgs.push_back("-disable-red-zone");
1516
1517 if (!Args.hasFlag(options::OPT_mimplicit_float,
1518 options::OPT_mno_implicit_float, true))
1519 CmdArgs.push_back("-no-implicit-float");
1520
1521 RenderAArch64ABI(Triple, Args, CmdArgs);
1522
1523 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1524 options::OPT_mno_fix_cortex_a53_835769)) {
1525 CmdArgs.push_back("-mllvm");
1526 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1527 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1528 else
1529 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1530 } else if (Triple.isAndroid()) {
1531 // Enabled A53 errata (835769) workaround by default on android
1532 CmdArgs.push_back("-mllvm");
1533 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1534 }
1535
1536 // Forward the -mglobal-merge option for explicit control over the pass.
1537 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1538 options::OPT_mno_global_merge)) {
1539 CmdArgs.push_back("-mllvm");
1540 if (A->getOption().matches(options::OPT_mno_global_merge))
1541 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1542 else
1543 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1544 }
1545
1546 // Enable/disable return address signing and indirect branch targets.
1547 if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1548 options::OPT_mbranch_protection_EQ)) {
1549
1550 const Driver &D = getToolChain().getDriver();
1551
1552 StringRef Scope, Key;
1553 bool IndirectBranches;
1554
1555 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1556 Scope = A->getValue();
1557 if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1558 !Scope.equals("all"))
1559 D.Diag(diag::err_invalid_branch_protection)
1560 << Scope << A->getAsString(Args);
1561 Key = "a_key";
1562 IndirectBranches = false;
1563 } else
1564 std::tie(Scope, Key, IndirectBranches) =
1565 ParseAArch64BranchProtection(D, Args, A);
1566
1567 CmdArgs.push_back(
1568 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1569 CmdArgs.push_back(
1570 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1571 if (IndirectBranches)
1572 CmdArgs.push_back("-mbranch-target-enforce");
1573 }
1574}
1575
1576void Clang::AddMIPSTargetArgs(const ArgList &Args,
1577 ArgStringList &CmdArgs) const {
1578 const Driver &D = getToolChain().getDriver();
1579 StringRef CPUName;
1580 StringRef ABIName;
1581 const llvm::Triple &Triple = getToolChain().getTriple();
1582 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1583
1584 CmdArgs.push_back("-target-abi");
1585 CmdArgs.push_back(ABIName.data());
1586
1587 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1588 if (ABI == mips::FloatABI::Soft) {
1589 // Floating point operations and argument passing are soft.
1590 CmdArgs.push_back("-msoft-float");
1591 CmdArgs.push_back("-mfloat-abi");
1592 CmdArgs.push_back("soft");
1593 } else {
1594 // Floating point operations and argument passing are hard.
1595 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1595, __PRETTY_FUNCTION__))
;
1596 CmdArgs.push_back("-mfloat-abi");
1597 CmdArgs.push_back("hard");
1598 }
1599
1600 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1601 if (A->getOption().matches(options::OPT_mxgot)) {
1602 CmdArgs.push_back("-mllvm");
1603 CmdArgs.push_back("-mxgot");
1604 }
1605 }
1606
1607 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1608 options::OPT_mno_ldc1_sdc1)) {
1609 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1610 CmdArgs.push_back("-mllvm");
1611 CmdArgs.push_back("-mno-ldc1-sdc1");
1612 }
1613 }
1614
1615 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1616 options::OPT_mno_check_zero_division)) {
1617 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1618 CmdArgs.push_back("-mllvm");
1619 CmdArgs.push_back("-mno-check-zero-division");
1620 }
1621 }
1622
1623 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1624 StringRef v = A->getValue();
1625 CmdArgs.push_back("-mllvm");
1626 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1627 A->claim();
1628 }
1629
1630 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1631 Arg *ABICalls =
1632 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1633
1634 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1635 // -mgpopt is the default for static, -fno-pic environments but these two
1636 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1637 // the only case where -mllvm -mgpopt is passed.
1638 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1639 // passed explicitly when compiling something with -mabicalls
1640 // (implictly) in affect. Currently the warning is in the backend.
1641 //
1642 // When the ABI in use is N64, we also need to determine the PIC mode that
1643 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1644 bool NoABICalls =
1645 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1646
1647 llvm::Reloc::Model RelocationModel;
1648 unsigned PICLevel;
1649 bool IsPIE;
1650 std::tie(RelocationModel, PICLevel, IsPIE) =
1651 ParsePICArgs(getToolChain(), Args);
1652
1653 NoABICalls = NoABICalls ||
1654 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1655
1656 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1657 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1658 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1659 CmdArgs.push_back("-mllvm");
1660 CmdArgs.push_back("-mgpopt");
1661
1662 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1663 options::OPT_mno_local_sdata);
1664 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1665 options::OPT_mno_extern_sdata);
1666 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1667 options::OPT_mno_embedded_data);
1668 if (LocalSData) {
1669 CmdArgs.push_back("-mllvm");
1670 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1671 CmdArgs.push_back("-mlocal-sdata=1");
1672 } else {
1673 CmdArgs.push_back("-mlocal-sdata=0");
1674 }
1675 LocalSData->claim();
1676 }
1677
1678 if (ExternSData) {
1679 CmdArgs.push_back("-mllvm");
1680 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1681 CmdArgs.push_back("-mextern-sdata=1");
1682 } else {
1683 CmdArgs.push_back("-mextern-sdata=0");
1684 }
1685 ExternSData->claim();
1686 }
1687
1688 if (EmbeddedData) {
1689 CmdArgs.push_back("-mllvm");
1690 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1691 CmdArgs.push_back("-membedded-data=1");
1692 } else {
1693 CmdArgs.push_back("-membedded-data=0");
1694 }
1695 EmbeddedData->claim();
1696 }
1697
1698 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1699 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1700
1701 if (GPOpt)
1702 GPOpt->claim();
1703
1704 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1705 StringRef Val = StringRef(A->getValue());
1706 if (mips::hasCompactBranches(CPUName)) {
1707 if (Val == "never" || Val == "always" || Val == "optimal") {
1708 CmdArgs.push_back("-mllvm");
1709 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1710 } else
1711 D.Diag(diag::err_drv_unsupported_option_argument)
1712 << A->getOption().getName() << Val;
1713 } else
1714 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1715 }
1716}
1717
1718void Clang::AddPPCTargetArgs(const ArgList &Args,
1719 ArgStringList &CmdArgs) const {
1720 // Select the ABI to use.
1721 const char *ABIName = nullptr;
1722 if (getToolChain().getTriple().isOSLinux())
1723 switch (getToolChain().getArch()) {
1724 case llvm::Triple::ppc64: {
1725 // When targeting a processor that supports QPX, or if QPX is
1726 // specifically enabled, default to using the ABI that supports QPX (so
1727 // long as it is not specifically disabled).
1728 bool HasQPX = false;
1729 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1730 HasQPX = A->getValue() == StringRef("a2q");
1731 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1732 if (HasQPX) {
1733 ABIName = "elfv1-qpx";
1734 break;
1735 }
1736
1737 ABIName = "elfv1";
1738 break;
1739 }
1740 case llvm::Triple::ppc64le:
1741 ABIName = "elfv2";
1742 break;
1743 default:
1744 break;
1745 }
1746
1747 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1748 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1749 // the option if given as we don't have backend support for any targets
1750 // that don't use the altivec abi.
1751 if (StringRef(A->getValue()) != "altivec")
1752 ABIName = A->getValue();
1753
1754 ppc::FloatABI FloatABI =
1755 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1756
1757 if (FloatABI == ppc::FloatABI::Soft) {
1758 // Floating point operations and argument passing are soft.
1759 CmdArgs.push_back("-msoft-float");
1760 CmdArgs.push_back("-mfloat-abi");
1761 CmdArgs.push_back("soft");
1762 } else {
1763 // Floating point operations and argument passing are hard.
1764 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1764, __PRETTY_FUNCTION__))
;
1765 CmdArgs.push_back("-mfloat-abi");
1766 CmdArgs.push_back("hard");
1767 }
1768
1769 if (ABIName) {
1770 CmdArgs.push_back("-target-abi");
1771 CmdArgs.push_back(ABIName);
1772 }
1773}
1774
1775void Clang::AddRISCVTargetArgs(const ArgList &Args,
1776 ArgStringList &CmdArgs) const {
1777 // FIXME: currently defaults to the soft-float ABIs. Will need to be
1778 // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropriate.
1779 const char *ABIName = nullptr;
1780 const llvm::Triple &Triple = getToolChain().getTriple();
1781 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1782 ABIName = A->getValue();
1783 else if (Triple.getArch() == llvm::Triple::riscv32)
1784 ABIName = "ilp32";
1785 else if (Triple.getArch() == llvm::Triple::riscv64)
1786 ABIName = "lp64";
1787 else
1788 llvm_unreachable("Unexpected triple!")::llvm::llvm_unreachable_internal("Unexpected triple!", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1788)
;
1789
1790 CmdArgs.push_back("-target-abi");
1791 CmdArgs.push_back(ABIName);
1792}
1793
1794void Clang::AddSparcTargetArgs(const ArgList &Args,
1795 ArgStringList &CmdArgs) const {
1796 sparc::FloatABI FloatABI =
1797 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1798
1799 if (FloatABI == sparc::FloatABI::Soft) {
1800 // Floating point operations and argument passing are soft.
1801 CmdArgs.push_back("-msoft-float");
1802 CmdArgs.push_back("-mfloat-abi");
1803 CmdArgs.push_back("soft");
1804 } else {
1805 // Floating point operations and argument passing are hard.
1806 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1806, __PRETTY_FUNCTION__))
;
1807 CmdArgs.push_back("-mfloat-abi");
1808 CmdArgs.push_back("hard");
1809 }
1810}
1811
1812void Clang::AddSystemZTargetArgs(const ArgList &Args,
1813 ArgStringList &CmdArgs) const {
1814 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1815 CmdArgs.push_back("-mbackchain");
1816}
1817
1818void Clang::AddX86TargetArgs(const ArgList &Args,
1819 ArgStringList &CmdArgs) const {
1820 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1821 Args.hasArg(options::OPT_mkernel) ||
1822 Args.hasArg(options::OPT_fapple_kext))
1823 CmdArgs.push_back("-disable-red-zone");
1824
1825 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
1826 options::OPT_mno_tls_direct_seg_refs, true))
1827 CmdArgs.push_back("-mno-tls-direct-seg-refs");
1828
1829 // Default to avoid implicit floating-point for kernel/kext code, but allow
1830 // that to be overridden with -mno-soft-float.
1831 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1832 Args.hasArg(options::OPT_fapple_kext));
1833 if (Arg *A = Args.getLastArg(
1834 options::OPT_msoft_float, options::OPT_mno_soft_float,
1835 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1836 const Option &O = A->getOption();
1837 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1838 O.matches(options::OPT_msoft_float));
1839 }
1840 if (NoImplicitFloat)
1841 CmdArgs.push_back("-no-implicit-float");
1842
1843 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1844 StringRef Value = A->getValue();
1845 if (Value == "intel" || Value == "att") {
1846 CmdArgs.push_back("-mllvm");
1847 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1848 } else {
1849 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1850 << A->getOption().getName() << Value;
1851 }
1852 } else if (getToolChain().getDriver().IsCLMode()) {
1853 CmdArgs.push_back("-mllvm");
1854 CmdArgs.push_back("-x86-asm-syntax=intel");
1855 }
1856
1857 // Set flags to support MCU ABI.
1858 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1859 CmdArgs.push_back("-mfloat-abi");
1860 CmdArgs.push_back("soft");
1861 CmdArgs.push_back("-mstack-alignment=4");
1862 }
1863}
1864
1865void Clang::AddHexagonTargetArgs(const ArgList &Args,
1866 ArgStringList &CmdArgs) const {
1867 CmdArgs.push_back("-mqdsp6-compat");
1868 CmdArgs.push_back("-Wreturn-type");
1869
1870 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1871 CmdArgs.push_back("-mllvm");
1872 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1873 Twine(G.getValue())));
1874 }
1875
1876 if (!Args.hasArg(options::OPT_fno_short_enums))
1877 CmdArgs.push_back("-fshort-enums");
1878 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1879 CmdArgs.push_back("-mllvm");
1880 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1881 }
1882 CmdArgs.push_back("-mllvm");
1883 CmdArgs.push_back("-machine-sink-split=0");
1884}
1885
1886void Clang::AddLanaiTargetArgs(const ArgList &Args,
1887 ArgStringList &CmdArgs) const {
1888 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1889 StringRef CPUName = A->getValue();
1890
1891 CmdArgs.push_back("-target-cpu");
1892 CmdArgs.push_back(Args.MakeArgString(CPUName));
1893 }
1894 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1895 StringRef Value = A->getValue();
1896 // Only support mregparm=4 to support old usage. Report error for all other
1897 // cases.
1898 int Mregparm;
1899 if (Value.getAsInteger(10, Mregparm)) {
1900 if (Mregparm != 4) {
1901 getToolChain().getDriver().Diag(
1902 diag::err_drv_unsupported_option_argument)
1903 << A->getOption().getName() << Value;
1904 }
1905 }
1906 }
1907}
1908
1909void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1910 ArgStringList &CmdArgs) const {
1911 // Default to "hidden" visibility.
1912 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1913 options::OPT_fvisibility_ms_compat)) {
1914 CmdArgs.push_back("-fvisibility");
1915 CmdArgs.push_back("hidden");
1916 }
1917}
1918
1919void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1920 StringRef Target, const InputInfo &Output,
1921 const InputInfo &Input, const ArgList &Args) const {
1922 // If this is a dry run, do not create the compilation database file.
1923 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1924 return;
1925
1926 using llvm::yaml::escape;
1927 const Driver &D = getToolChain().getDriver();
1928
1929 if (!CompilationDatabase) {
1930 std::error_code EC;
1931 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1932 if (EC) {
1933 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1934 << EC.message();
1935 return;
1936 }
1937 CompilationDatabase = std::move(File);
1938 }
1939 auto &CDB = *CompilationDatabase;
1940 SmallString<128> Buf;
1941 if (llvm::sys::fs::current_path(Buf))
1942 Buf = ".";
1943 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1944 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1945 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1946 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1947 Buf = "-x";
1948 Buf += types::getTypeName(Input.getType());
1949 CDB << ", \"" << escape(Buf) << "\"";
1950 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1951 Buf = "--sysroot=";
1952 Buf += D.SysRoot;
1953 CDB << ", \"" << escape(Buf) << "\"";
1954 }
1955 CDB << ", \"" << escape(Input.getFilename()) << "\"";
1956 for (auto &A: Args) {
1957 auto &O = A->getOption();
1958 // Skip language selection, which is positional.
1959 if (O.getID() == options::OPT_x)
1960 continue;
1961 // Skip writing dependency output and the compilation database itself.
1962 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1963 continue;
1964 // Skip inputs.
1965 if (O.getKind() == Option::InputClass)
1966 continue;
1967 // All other arguments are quoted and appended.
1968 ArgStringList ASL;
1969 A->render(Args, ASL);
1970 for (auto &it: ASL)
1971 CDB << ", \"" << escape(it) << "\"";
1972 }
1973 Buf = "--target=";
1974 Buf += Target;
1975 CDB << ", \"" << escape(Buf) << "\"]},\n";
1976}
1977
1978static void CollectArgsForIntegratedAssembler(Compilation &C,
1979 const ArgList &Args,
1980 ArgStringList &CmdArgs,
1981 const Driver &D) {
1982 if (UseRelaxAll(C, Args))
1983 CmdArgs.push_back("-mrelax-all");
1984
1985 // Only default to -mincremental-linker-compatible if we think we are
1986 // targeting the MSVC linker.
1987 bool DefaultIncrementalLinkerCompatible =
1988 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1989 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1990 options::OPT_mno_incremental_linker_compatible,
1991 DefaultIncrementalLinkerCompatible))
1992 CmdArgs.push_back("-mincremental-linker-compatible");
1993
1994 switch (C.getDefaultToolChain().getArch()) {
1995 case llvm::Triple::arm:
1996 case llvm::Triple::armeb:
1997 case llvm::Triple::thumb:
1998 case llvm::Triple::thumbeb:
1999 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2000 StringRef Value = A->getValue();
2001 if (Value == "always" || Value == "never" || Value == "arm" ||
2002 Value == "thumb") {
2003 CmdArgs.push_back("-mllvm");
2004 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2005 } else {
2006 D.Diag(diag::err_drv_unsupported_option_argument)
2007 << A->getOption().getName() << Value;
2008 }
2009 }
2010 break;
2011 default:
2012 break;
2013 }
2014
2015 // When passing -I arguments to the assembler we sometimes need to
2016 // unconditionally take the next argument. For example, when parsing
2017 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2018 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2019 // arg after parsing the '-I' arg.
2020 bool TakeNextArg = false;
2021
2022 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2023 const char *MipsTargetFeature = nullptr;
2024 for (const Arg *A :
2025 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2026 A->claim();
2027
2028 for (StringRef Value : A->getValues()) {
2029 if (TakeNextArg) {
2030 CmdArgs.push_back(Value.data());
2031 TakeNextArg = false;
2032 continue;
2033 }
2034
2035 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2036 Value == "-mbig-obj")
2037 continue; // LLVM handles bigobj automatically
2038
2039 switch (C.getDefaultToolChain().getArch()) {
2040 default:
2041 break;
2042 case llvm::Triple::thumb:
2043 case llvm::Triple::thumbeb:
2044 case llvm::Triple::arm:
2045 case llvm::Triple::armeb:
2046 if (Value == "-mthumb")
2047 // -mthumb has already been processed in ComputeLLVMTriple()
2048 // recognize but skip over here.
2049 continue;
2050 break;
2051 case llvm::Triple::mips:
2052 case llvm::Triple::mipsel:
2053 case llvm::Triple::mips64:
2054 case llvm::Triple::mips64el:
2055 if (Value == "--trap") {
2056 CmdArgs.push_back("-target-feature");
2057 CmdArgs.push_back("+use-tcc-in-div");
2058 continue;
2059 }
2060 if (Value == "--break") {
2061 CmdArgs.push_back("-target-feature");
2062 CmdArgs.push_back("-use-tcc-in-div");
2063 continue;
2064 }
2065 if (Value.startswith("-msoft-float")) {
2066 CmdArgs.push_back("-target-feature");
2067 CmdArgs.push_back("+soft-float");
2068 continue;
2069 }
2070 if (Value.startswith("-mhard-float")) {
2071 CmdArgs.push_back("-target-feature");
2072 CmdArgs.push_back("-soft-float");
2073 continue;
2074 }
2075
2076 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2077 .Case("-mips1", "+mips1")
2078 .Case("-mips2", "+mips2")
2079 .Case("-mips3", "+mips3")
2080 .Case("-mips4", "+mips4")
2081 .Case("-mips5", "+mips5")
2082 .Case("-mips32", "+mips32")
2083 .Case("-mips32r2", "+mips32r2")
2084 .Case("-mips32r3", "+mips32r3")
2085 .Case("-mips32r5", "+mips32r5")
2086 .Case("-mips32r6", "+mips32r6")
2087 .Case("-mips64", "+mips64")
2088 .Case("-mips64r2", "+mips64r2")
2089 .Case("-mips64r3", "+mips64r3")
2090 .Case("-mips64r5", "+mips64r5")
2091 .Case("-mips64r6", "+mips64r6")
2092 .Default(nullptr);
2093 if (MipsTargetFeature)
2094 continue;
2095 }
2096
2097 if (Value == "-force_cpusubtype_ALL") {
2098 // Do nothing, this is the default and we don't support anything else.
2099 } else if (Value == "-L") {
2100 CmdArgs.push_back("-msave-temp-labels");
2101 } else if (Value == "--fatal-warnings") {
2102 CmdArgs.push_back("-massembler-fatal-warnings");
2103 } else if (Value == "--noexecstack") {
2104 CmdArgs.push_back("-mnoexecstack");
2105 } else if (Value.startswith("-compress-debug-sections") ||
2106 Value.startswith("--compress-debug-sections") ||
2107 Value == "-nocompress-debug-sections" ||
2108 Value == "--nocompress-debug-sections") {
2109 CmdArgs.push_back(Value.data());
2110 } else if (Value == "-mrelax-relocations=yes" ||
2111 Value == "--mrelax-relocations=yes") {
2112 UseRelaxRelocations = true;
2113 } else if (Value == "-mrelax-relocations=no" ||
2114 Value == "--mrelax-relocations=no") {
2115 UseRelaxRelocations = false;
2116 } else if (Value.startswith("-I")) {
2117 CmdArgs.push_back(Value.data());
2118 // We need to consume the next argument if the current arg is a plain
2119 // -I. The next arg will be the include directory.
2120 if (Value == "-I")
2121 TakeNextArg = true;
2122 } else if (Value.startswith("-gdwarf-")) {
2123 // "-gdwarf-N" options are not cc1as options.
2124 unsigned DwarfVersion = DwarfVersionNum(Value);
2125 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2126 CmdArgs.push_back(Value.data());
2127 } else {
2128 RenderDebugEnablingArgs(Args, CmdArgs,
2129 codegenoptions::LimitedDebugInfo,
2130 DwarfVersion, llvm::DebuggerKind::Default);
2131 }
2132 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2133 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2134 // Do nothing, we'll validate it later.
2135 } else if (Value == "-defsym") {
2136 if (A->getNumValues() != 2) {
2137 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2138 break;
2139 }
2140 const char *S = A->getValue(1);
2141 auto Pair = StringRef(S).split('=');
2142 auto Sym = Pair.first;
2143 auto SVal = Pair.second;
2144
2145 if (Sym.empty() || SVal.empty()) {
2146 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2147 break;
2148 }
2149 int64_t IVal;
2150 if (SVal.getAsInteger(0, IVal)) {
2151 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2152 break;
2153 }
2154 CmdArgs.push_back(Value.data());
2155 TakeNextArg = true;
2156 } else if (Value == "-fdebug-compilation-dir") {
2157 CmdArgs.push_back("-fdebug-compilation-dir");
2158 TakeNextArg = true;
2159 } else {
2160 D.Diag(diag::err_drv_unsupported_option_argument)
2161 << A->getOption().getName() << Value;
2162 }
2163 }
2164 }
2165 if (UseRelaxRelocations)
2166 CmdArgs.push_back("--mrelax-relocations");
2167 if (MipsTargetFeature != nullptr) {
2168 CmdArgs.push_back("-target-feature");
2169 CmdArgs.push_back(MipsTargetFeature);
2170 }
2171
2172 // forward -fembed-bitcode to assmebler
2173 if (C.getDriver().embedBitcodeEnabled() ||
2174 C.getDriver().embedBitcodeMarkerOnly())
2175 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2176}
2177
2178static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2179 bool OFastEnabled, const ArgList &Args,
2180 ArgStringList &CmdArgs) {
2181 // Handle various floating point optimization flags, mapping them to the
2182 // appropriate LLVM code generation flags. This is complicated by several
2183 // "umbrella" flags, so we do this by stepping through the flags incrementally
2184 // adjusting what we think is enabled/disabled, then at the end setting the
2185 // LLVM flags based on the final state.
2186 bool HonorINFs = true;
2187 bool HonorNaNs = true;
2188 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2189 bool MathErrno = TC.IsMathErrnoDefault();
2190 bool AssociativeMath = false;
2191 bool ReciprocalMath = false;
2192 bool SignedZeros = true;
2193 bool TrappingMath = true;
2194 StringRef DenormalFPMath = "";
2195 StringRef FPContract = "";
2196
2197 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2198 CmdArgs.push_back("-mlimit-float-precision");
2199 CmdArgs.push_back(A->getValue());
2200 }
2201
2202 for (const Arg *A : Args) {
2203 switch (A->getOption().getID()) {
2204 // If this isn't an FP option skip the claim below
2205 default: continue;
2206
2207 // Options controlling individual features
2208 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2209 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2210 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2211 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2212 case options::OPT_fmath_errno: MathErrno = true; break;
2213 case options::OPT_fno_math_errno: MathErrno = false; break;
2214 case options::OPT_fassociative_math: AssociativeMath = true; break;
2215 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2216 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2217 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2218 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2219 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2220 case options::OPT_ftrapping_math: TrappingMath = true; break;
2221 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2222
2223 case options::OPT_fdenormal_fp_math_EQ:
2224 DenormalFPMath = A->getValue();
2225 break;
2226
2227 // Validate and pass through -fp-contract option.
2228 case options::OPT_ffp_contract: {
2229 StringRef Val = A->getValue();
2230 if (Val == "fast" || Val == "on" || Val == "off")
2231 FPContract = Val;
2232 else
2233 D.Diag(diag::err_drv_unsupported_option_argument)
2234 << A->getOption().getName() << Val;
2235 break;
2236 }
2237
2238 case options::OPT_ffinite_math_only:
2239 HonorINFs = false;
2240 HonorNaNs = false;
2241 break;
2242 case options::OPT_fno_finite_math_only:
2243 HonorINFs = true;
2244 HonorNaNs = true;
2245 break;
2246
2247 case options::OPT_funsafe_math_optimizations:
2248 AssociativeMath = true;
2249 ReciprocalMath = true;
2250 SignedZeros = false;
2251 TrappingMath = false;
2252 break;
2253 case options::OPT_fno_unsafe_math_optimizations:
2254 AssociativeMath = false;
2255 ReciprocalMath = false;
2256 SignedZeros = true;
2257 TrappingMath = true;
2258 // -fno_unsafe_math_optimizations restores default denormal handling
2259 DenormalFPMath = "";
2260 break;
2261
2262 case options::OPT_Ofast:
2263 // If -Ofast is the optimization level, then -ffast-math should be enabled
2264 if (!OFastEnabled)
2265 continue;
2266 LLVM_FALLTHROUGH[[clang::fallthrough]];
2267 case options::OPT_ffast_math:
2268 HonorINFs = false;
2269 HonorNaNs = false;
2270 MathErrno = false;
2271 AssociativeMath = true;
2272 ReciprocalMath = true;
2273 SignedZeros = false;
2274 TrappingMath = false;
2275 // If fast-math is set then set the fp-contract mode to fast.
2276 FPContract = "fast";
2277 break;
2278 case options::OPT_fno_fast_math:
2279 HonorINFs = true;
2280 HonorNaNs = true;
2281 // Turning on -ffast-math (with either flag) removes the need for
2282 // MathErrno. However, turning *off* -ffast-math merely restores the
2283 // toolchain default (which may be false).
2284 MathErrno = TC.IsMathErrnoDefault();
2285 AssociativeMath = false;
2286 ReciprocalMath = false;
2287 SignedZeros = true;
2288 TrappingMath = true;
2289 // -fno_fast_math restores default denormal and fpcontract handling
2290 DenormalFPMath = "";
2291 FPContract = "";
2292 break;
2293 }
2294
2295 // If we handled this option claim it
2296 A->claim();
2297 }
2298
2299 if (!HonorINFs)
2300 CmdArgs.push_back("-menable-no-infs");
2301
2302 if (!HonorNaNs)
2303 CmdArgs.push_back("-menable-no-nans");
2304
2305 if (MathErrno)
2306 CmdArgs.push_back("-fmath-errno");
2307
2308 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2309 !TrappingMath)
2310 CmdArgs.push_back("-menable-unsafe-fp-math");
2311
2312 if (!SignedZeros)
2313 CmdArgs.push_back("-fno-signed-zeros");
2314
2315 if (AssociativeMath && !SignedZeros && !TrappingMath)
2316 CmdArgs.push_back("-mreassociate");
2317
2318 if (ReciprocalMath)
2319 CmdArgs.push_back("-freciprocal-math");
2320
2321 if (!TrappingMath)
2322 CmdArgs.push_back("-fno-trapping-math");
2323
2324 if (!DenormalFPMath.empty())
2325 CmdArgs.push_back(
2326 Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2327
2328 if (!FPContract.empty())
2329 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2330
2331 ParseMRecip(D, Args, CmdArgs);
2332
2333 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2334 // individual features enabled by -ffast-math instead of the option itself as
2335 // that's consistent with gcc's behaviour.
2336 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2337 ReciprocalMath && !SignedZeros && !TrappingMath)
2338 CmdArgs.push_back("-ffast-math");
2339
2340 // Handle __FINITE_MATH_ONLY__ similarly.
2341 if (!HonorINFs && !HonorNaNs)
2342 CmdArgs.push_back("-ffinite-math-only");
2343
2344 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2345 CmdArgs.push_back("-mfpmath");
2346 CmdArgs.push_back(A->getValue());
2347 }
2348
2349 // Disable a codegen optimization for floating-point casts.
2350 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2351 options::OPT_fstrict_float_cast_overflow, false))
2352 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2353}
2354
2355static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2356 const llvm::Triple &Triple,
2357 const InputInfo &Input) {
2358 // Enable region store model by default.
2359 CmdArgs.push_back("-analyzer-store=region");
2360
2361 // Treat blocks as analysis entry points.
2362 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2363
2364 // Add default argument set.
2365 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2366 CmdArgs.push_back("-analyzer-checker=core");
2367 CmdArgs.push_back("-analyzer-checker=apiModeling");
2368
2369 if (!Triple.isWindowsMSVCEnvironment()) {
2370 CmdArgs.push_back("-analyzer-checker=unix");
2371 } else {
2372 // Enable "unix" checkers that also work on Windows.
2373 CmdArgs.push_back("-analyzer-checker=unix.API");
2374 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2375 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2376 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2377 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2378 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2379 }
2380
2381 // Disable some unix checkers for PS4.
2382 if (Triple.isPS4CPU()) {
2383 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2384 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2385 }
2386
2387 if (Triple.isOSDarwin())
2388 CmdArgs.push_back("-analyzer-checker=osx");
2389
2390 CmdArgs.push_back("-analyzer-checker=deadcode");
2391
2392 if (types::isCXX(Input.getType()))
2393 CmdArgs.push_back("-analyzer-checker=cplusplus");
2394
2395 if (!Triple.isPS4CPU()) {
2396 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2397 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2398 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2399 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2400 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2401 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2402 }
2403
2404 // Default nullability checks.
2405 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2406 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2407 }
2408
2409 // Set the output format. The default is plist, for (lame) historical reasons.
2410 CmdArgs.push_back("-analyzer-output");
2411 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2412 CmdArgs.push_back(A->getValue());
2413 else
2414 CmdArgs.push_back("plist");
2415
2416 // Disable the presentation of standard compiler warnings when using
2417 // --analyze. We only want to show static analyzer diagnostics or frontend
2418 // errors.
2419 CmdArgs.push_back("-w");
2420
2421 // Add -Xanalyzer arguments when running as analyzer.
2422 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2423}
2424
2425static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2426 ArgStringList &CmdArgs, bool KernelOrKext) {
2427 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2428
2429 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2430 // doesn't even have a stack!
2431 if (EffectiveTriple.isNVPTX())
2432 return;
2433
2434 // -stack-protector=0 is default.
2435 unsigned StackProtectorLevel = 0;
2436 unsigned DefaultStackProtectorLevel =
2437 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2438
2439 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2440 options::OPT_fstack_protector_all,
2441 options::OPT_fstack_protector_strong,
2442 options::OPT_fstack_protector)) {
2443 if (A->getOption().matches(options::OPT_fstack_protector))
2444 StackProtectorLevel =
2445 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2446 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2447 StackProtectorLevel = LangOptions::SSPStrong;
2448 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2449 StackProtectorLevel = LangOptions::SSPReq;
2450 } else {
2451 StackProtectorLevel = DefaultStackProtectorLevel;
2452 }
2453
2454 if (StackProtectorLevel) {
2455 CmdArgs.push_back("-stack-protector");
2456 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2457 }
2458
2459 // --param ssp-buffer-size=
2460 for (const Arg *A : Args.filtered(options::OPT__param)) {
2461 StringRef Str(A->getValue());
2462 if (Str.startswith("ssp-buffer-size=")) {
2463 if (StackProtectorLevel) {
2464 CmdArgs.push_back("-stack-protector-buffer-size");
2465 // FIXME: Verify the argument is a valid integer.
2466 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2467 }
2468 A->claim();
2469 }
2470 }
2471}
2472
2473static void RenderTrivialAutoVarInitOptions(const Driver &D,
2474 const ToolChain &TC,
2475 const ArgList &Args,
2476 ArgStringList &CmdArgs) {
2477 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2478 StringRef TrivialAutoVarInit = "";
2479
2480 for (const Arg *A : Args) {
2481 switch (A->getOption().getID()) {
2482 default:
2483 continue;
2484 case options::OPT_ftrivial_auto_var_init: {
2485 A->claim();
2486 StringRef Val = A->getValue();
2487 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2488 TrivialAutoVarInit = Val;
2489 else
2490 D.Diag(diag::err_drv_unsupported_option_argument)
2491 << A->getOption().getName() << Val;
2492 break;
2493 }
2494 }
2495 }
2496
2497 if (TrivialAutoVarInit.empty())
2498 switch (DefaultTrivialAutoVarInit) {
2499 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
2500 break;
2501 case LangOptions::TrivialAutoVarInitKind::Pattern:
2502 TrivialAutoVarInit = "pattern";
2503 break;
2504 case LangOptions::TrivialAutoVarInitKind::Zero:
2505 TrivialAutoVarInit = "zero";
2506 break;
2507 }
2508
2509 if (!TrivialAutoVarInit.empty()) {
2510 if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
2511 D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
2512 CmdArgs.push_back(
2513 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
2514 }
2515}
2516
2517static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2518 const unsigned ForwardedArguments[] = {
2519 options::OPT_cl_opt_disable,
2520 options::OPT_cl_strict_aliasing,
2521 options::OPT_cl_single_precision_constant,
2522 options::OPT_cl_finite_math_only,
2523 options::OPT_cl_kernel_arg_info,
2524 options::OPT_cl_unsafe_math_optimizations,
2525 options::OPT_cl_fast_relaxed_math,
2526 options::OPT_cl_mad_enable,
2527 options::OPT_cl_no_signed_zeros,
2528 options::OPT_cl_denorms_are_zero,
2529 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2530 options::OPT_cl_uniform_work_group_size
2531 };
2532
2533 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2534 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2535 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2536 }
2537
2538 for (const auto &Arg : ForwardedArguments)
2539 if (const auto *A = Args.getLastArg(Arg))
2540 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2541}
2542
2543static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2544 ArgStringList &CmdArgs) {
2545 bool ARCMTEnabled = false;
2546 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2547 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2548 options::OPT_ccc_arcmt_modify,
2549 options::OPT_ccc_arcmt_migrate)) {
2550 ARCMTEnabled = true;
2551 switch (A->getOption().getID()) {
2552 default: llvm_unreachable("missed a case")::llvm::llvm_unreachable_internal("missed a case", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 2552)
;
2553 case options::OPT_ccc_arcmt_check:
2554 CmdArgs.push_back("-arcmt-check");
2555 break;
2556 case options::OPT_ccc_arcmt_modify:
2557 CmdArgs.push_back("-arcmt-modify");
2558 break;
2559 case options::OPT_ccc_arcmt_migrate:
2560 CmdArgs.push_back("-arcmt-migrate");
2561 CmdArgs.push_back("-mt-migrate-directory");
2562 CmdArgs.push_back(A->getValue());
2563
2564 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2565 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2566 break;
2567 }
2568 }
2569 } else {
2570 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2571 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2572 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2573 }
2574
2575 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2576 if (ARCMTEnabled)
2577 D.Diag(diag::err_drv_argument_not_allowed_with)
2578 << A->getAsString(Args) << "-ccc-arcmt-migrate";
2579
2580 CmdArgs.push_back("-mt-migrate-directory");
2581 CmdArgs.push_back(A->getValue());
2582
2583 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2584 options::OPT_objcmt_migrate_subscripting,
2585 options::OPT_objcmt_migrate_property)) {
2586 // None specified, means enable them all.
2587 CmdArgs.push_back("-objcmt-migrate-literals");
2588 CmdArgs.push_back("-objcmt-migrate-subscripting");
2589 CmdArgs.push_back("-objcmt-migrate-property");
2590 } else {
2591 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2592 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2593 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2594 }
2595 } else {
2596 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2597 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2598 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2599 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2600 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2601 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2602 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2603 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2604 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2605 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2606 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2607 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2608 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2609 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2610 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2611 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2612 }
2613}
2614
2615static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2616 const ArgList &Args, ArgStringList &CmdArgs) {
2617 // -fbuiltin is default unless -mkernel is used.
2618 bool UseBuiltins =
2619 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2620 !Args.hasArg(options::OPT_mkernel));
2621 if (!UseBuiltins)
2622 CmdArgs.push_back("-fno-builtin");
2623
2624 // -ffreestanding implies -fno-builtin.
2625 if (Args.hasArg(options::OPT_ffreestanding))
2626 UseBuiltins = false;
2627
2628 // Process the -fno-builtin-* options.
2629 for (const auto &Arg : Args) {
2630 const Option &O = Arg->getOption();
2631 if (!O.matches(options::OPT_fno_builtin_))
2632 continue;
2633
2634 Arg->claim();
2635
2636 // If -fno-builtin is specified, then there's no need to pass the option to
2637 // the frontend.
2638 if (!UseBuiltins)
2639 continue;
2640
2641 StringRef FuncName = Arg->getValue();
2642 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2643 }
2644
2645 // le32-specific flags:
2646 // -fno-math-builtin: clang should not convert math builtins to intrinsics
2647 // by default.
2648 if (TC.getArch() == llvm::Triple::le32)
2649 CmdArgs.push_back("-fno-math-builtin");
2650}
2651
2652void Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
2653 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2654 llvm::sys::path::append(Result, "org.llvm.clang.");
2655 appendUserToPath(Result);
2656 llvm::sys::path::append(Result, "ModuleCache");
2657}
2658
2659static void RenderModulesOptions(Compilation &C, const Driver &D,
2660 const ArgList &Args, const InputInfo &Input,
2661 const InputInfo &Output,
2662 ArgStringList &CmdArgs, bool &HaveModules) {
2663 // -fmodules enables the use of precompiled modules (off by default).
2664 // Users can pass -fno-cxx-modules to turn off modules support for
2665 // C++/Objective-C++ programs.
2666 bool HaveClangModules = false;
2667 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2668 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2669 options::OPT_fno_cxx_modules, true);
2670 if (AllowedInCXX || !types::isCXX(Input.getType())) {
2671 CmdArgs.push_back("-fmodules");
2672 HaveClangModules = true;
2673 }
2674 }
2675
2676 HaveModules = HaveClangModules;
2677 if (Args.hasArg(options::OPT_fmodules_ts)) {
2678 CmdArgs.push_back("-fmodules-ts");
2679 HaveModules = true;
2680 }
2681
2682 // -fmodule-maps enables implicit reading of module map files. By default,
2683 // this is enabled if we are using Clang's flavor of precompiled modules.
2684 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2685 options::OPT_fno_implicit_module_maps, HaveClangModules))
2686 CmdArgs.push_back("-fimplicit-module-maps");
2687
2688 // -fmodules-decluse checks that modules used are declared so (off by default)
2689 if (Args.hasFlag(options::OPT_fmodules_decluse,
2690 options::OPT_fno_modules_decluse, false))
2691 CmdArgs.push_back("-fmodules-decluse");
2692
2693 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2694 // all #included headers are part of modules.
2695 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2696 options::OPT_fno_modules_strict_decluse, false))
2697 CmdArgs.push_back("-fmodules-strict-decluse");
2698
2699 // -fno-implicit-modules turns off implicitly compiling modules on demand.
2700 bool ImplicitModules = false;
2701 if (!Args.hasFlag(options::OPT_fimplicit_modules,
2702 options::OPT_fno_implicit_modules, HaveClangModules)) {
2703 if (HaveModules)
2704 CmdArgs.push_back("-fno-implicit-modules");
2705 } else if (HaveModules) {
2706 ImplicitModules = true;
2707 // -fmodule-cache-path specifies where our implicitly-built module files
2708 // should be written.
2709 SmallString<128> Path;
2710 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2711 Path = A->getValue();
2712
2713 if (C.isForDiagnostics()) {
2714 // When generating crash reports, we want to emit the modules along with
2715 // the reproduction sources, so we ignore any provided module path.
2716 Path = Output.getFilename();
2717 llvm::sys::path::replace_extension(Path, ".cache");
2718 llvm::sys::path::append(Path, "modules");
2719 } else if (Path.empty()) {
2720 // No module path was provided: use the default.
2721 Driver::getDefaultModuleCachePath(Path);
2722 }
2723
2724 const char Arg[] = "-fmodules-cache-path=";
2725 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2726 CmdArgs.push_back(Args.MakeArgString(Path));
2727 }
2728
2729 if (HaveModules) {
2730 // -fprebuilt-module-path specifies where to load the prebuilt module files.
2731 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2732 CmdArgs.push_back(Args.MakeArgString(
2733 std::string("-fprebuilt-module-path=") + A->getValue()));
2734 A->claim();
2735 }
2736 }
2737
2738 // -fmodule-name specifies the module that is currently being built (or
2739 // used for header checking by -fmodule-maps).
2740 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2741
2742 // -fmodule-map-file can be used to specify files containing module
2743 // definitions.
2744 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2745
2746 // -fbuiltin-module-map can be used to load the clang
2747 // builtin headers modulemap file.
2748 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2749 SmallString<128> BuiltinModuleMap(D.ResourceDir);
2750 llvm::sys::path::append(BuiltinModuleMap, "include");
2751 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2752 if (llvm::sys::fs::exists(BuiltinModuleMap))
2753 CmdArgs.push_back(
2754 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2755 }
2756
2757 // The -fmodule-file=<name>=<file> form specifies the mapping of module
2758 // names to precompiled module files (the module is loaded only if used).
2759 // The -fmodule-file=<file> form can be used to unconditionally load
2760 // precompiled module files (whether used or not).
2761 if (HaveModules)
2762 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2763 else
2764 Args.ClaimAllArgs(options::OPT_fmodule_file);
2765
2766 // When building modules and generating crashdumps, we need to dump a module
2767 // dependency VFS alongside the output.
2768 if (HaveClangModules && C.isForDiagnostics()) {
2769 SmallString<128> VFSDir(Output.getFilename());
2770 llvm::sys::path::replace_extension(VFSDir, ".cache");
2771 // Add the cache directory as a temp so the crash diagnostics pick it up.
2772 C.addTempFile(Args.MakeArgString(VFSDir));
2773
2774 llvm::sys::path::append(VFSDir, "vfs");
2775 CmdArgs.push_back("-module-dependency-dir");
2776 CmdArgs.push_back(Args.MakeArgString(VFSDir));
2777 }
2778
2779 if (HaveClangModules)
2780 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2781
2782 // Pass through all -fmodules-ignore-macro arguments.
2783 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2784 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2785 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2786
2787 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2788
2789 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2790 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2791 D.Diag(diag::err_drv_argument_not_allowed_with)
2792 << A->getAsString(Args) << "-fbuild-session-timestamp";
2793
2794 llvm::sys::fs::file_status Status;
2795 if (llvm::sys::fs::status(A->getValue(), Status))
2796 D.Diag(diag::err_drv_no_such_file) << A->getValue();
2797 CmdArgs.push_back(
2798 Args.MakeArgString("-fbuild-session-timestamp=" +
2799 Twine((uint64_t)Status.getLastModificationTime()
2800 .time_since_epoch()
2801 .count())));
2802 }
2803
2804 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2805 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2806 options::OPT_fbuild_session_file))
2807 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2808
2809 Args.AddLastArg(CmdArgs,
2810 options::OPT_fmodules_validate_once_per_build_session);
2811 }
2812
2813 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2814 options::OPT_fno_modules_validate_system_headers,
2815 ImplicitModules))
2816 CmdArgs.push_back("-fmodules-validate-system-headers");
2817
2818 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2819}
2820
2821static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2822 ArgStringList &CmdArgs) {
2823 // -fsigned-char is default.
2824 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2825 options::OPT_fno_signed_char,
2826 options::OPT_funsigned_char,
2827 options::OPT_fno_unsigned_char)) {
2828 if (A->getOption().matches(options::OPT_funsigned_char) ||
2829 A->getOption().matches(options::OPT_fno_signed_char)) {
2830 CmdArgs.push_back("-fno-signed-char");
2831 }
2832 } else if (!isSignedCharDefault(T)) {
2833 CmdArgs.push_back("-fno-signed-char");
2834 }
2835
2836 // The default depends on the language standard.
2837 if (const Arg *A =
2838 Args.getLastArg(options::OPT_fchar8__t, options::OPT_fno_char8__t))
2839 A->render(Args, CmdArgs);
2840
2841 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2842 options::OPT_fno_short_wchar)) {
2843 if (A->getOption().matches(options::OPT_fshort_wchar)) {
2844 CmdArgs.push_back("-fwchar-type=short");
2845 CmdArgs.push_back("-fno-signed-wchar");
2846 } else {
2847 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2848 CmdArgs.push_back("-fwchar-type=int");
2849 if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
2850 T.isOSOpenBSD()))
2851 CmdArgs.push_back("-fno-signed-wchar");
2852 else
2853 CmdArgs.push_back("-fsigned-wchar");
2854 }
2855 }
2856}
2857
2858static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2859 const llvm::Triple &T, const ArgList &Args,
2860 ObjCRuntime &Runtime, bool InferCovariantReturns,
2861 const InputInfo &Input, ArgStringList &CmdArgs) {
2862 const llvm::Triple::ArchType Arch = TC.getArch();
2863
2864 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2865 // is the default. Except for deployment target of 10.5, next runtime is
2866 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2867 if (Runtime.isNonFragile()) {
2868 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2869 options::OPT_fno_objc_legacy_dispatch,
2870 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2871 if (TC.UseObjCMixedDispatch())
2872 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2873 else
2874 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2875 }
2876 }
2877
2878 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2879 // to do Array/Dictionary subscripting by default.
2880 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2881 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2882 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2883
2884 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2885 // NOTE: This logic is duplicated in ToolChains.cpp.
2886 if (isObjCAutoRefCount(Args)) {
2887 TC.CheckObjCARC();
2888
2889 CmdArgs.push_back("-fobjc-arc");
2890
2891 // FIXME: It seems like this entire block, and several around it should be
2892 // wrapped in isObjC, but for now we just use it here as this is where it
2893 // was being used previously.
2894 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2895 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2896 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2897 else
2898 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2899 }
2900
2901 // Allow the user to enable full exceptions code emission.
2902 // We default off for Objective-C, on for Objective-C++.
2903 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2904 options::OPT_fno_objc_arc_exceptions,
2905 /*default=*/types::isCXX(Input.getType())))
2906 CmdArgs.push_back("-fobjc-arc-exceptions");
2907 }
2908
2909 // Silence warning for full exception code emission options when explicitly
2910 // set to use no ARC.
2911 if (Args.hasArg(options::OPT_fno_objc_arc)) {
2912 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2913 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2914 }
2915
2916 // Allow the user to control whether messages can be converted to runtime
2917 // functions.
2918 if (types::isObjC(Input.getType())) {
2919 auto *Arg = Args.getLastArg(
2920 options::OPT_fobjc_convert_messages_to_runtime_calls,
2921 options::OPT_fno_objc_convert_messages_to_runtime_calls);
2922 if (Arg &&
2923 Arg->getOption().matches(
2924 options::OPT_fno_objc_convert_messages_to_runtime_calls))
2925 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
2926 }
2927
2928 // -fobjc-infer-related-result-type is the default, except in the Objective-C
2929 // rewriter.
2930 if (InferCovariantReturns)
2931 CmdArgs.push_back("-fno-objc-infer-related-result-type");
2932
2933 // Pass down -fobjc-weak or -fno-objc-weak if present.
2934 if (types::isObjC(Input.getType())) {
2935 auto WeakArg =
2936 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2937 if (!WeakArg) {
2938 // nothing to do
2939 } else if (!Runtime.allowsWeak()) {
2940 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2941 D.Diag(diag::err_objc_weak_unsupported);
2942 } else {
2943 WeakArg->render(Args, CmdArgs);
2944 }
2945 }
2946}
2947
2948static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2949 ArgStringList &CmdArgs) {
2950 bool CaretDefault = true;
2951 bool ColumnDefault = true;
2952
2953 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2954 options::OPT__SLASH_diagnostics_column,
2955 options::OPT__SLASH_diagnostics_caret)) {
2956 switch (A->getOption().getID()) {
2957 case options::OPT__SLASH_diagnostics_caret:
2958 CaretDefault = true;
2959 ColumnDefault = true;
2960 break;
2961 case options::OPT__SLASH_diagnostics_column:
2962 CaretDefault = false;
2963 ColumnDefault = true;
2964 break;
2965 case options::OPT__SLASH_diagnostics_classic:
2966 CaretDefault = false;
2967 ColumnDefault = false;
2968 break;
2969 }
2970 }
2971
2972 // -fcaret-diagnostics is default.
2973 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2974 options::OPT_fno_caret_diagnostics, CaretDefault))
2975 CmdArgs.push_back("-fno-caret-diagnostics");
2976
2977 // -fdiagnostics-fixit-info is default, only pass non-default.
2978 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2979 options::OPT_fno_diagnostics_fixit_info))
2980 CmdArgs.push_back("-fno-diagnostics-fixit-info");
2981
2982 // Enable -fdiagnostics-show-option by default.
2983 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2984 options::OPT_fno_diagnostics_show_option))
2985 CmdArgs.push_back("-fdiagnostics-show-option");
2986
2987 if (const Arg *A =
2988 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2989 CmdArgs.push_back("-fdiagnostics-show-category");
2990 CmdArgs.push_back(A->getValue());
2991 }
2992
2993 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2994 options::OPT_fno_diagnostics_show_hotness, false))
2995 CmdArgs.push_back("-fdiagnostics-show-hotness");
2996
2997 if (const Arg *A =
2998 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2999 std::string Opt =
3000 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3001 CmdArgs.push_back(Args.MakeArgString(Opt));
3002 }
3003
3004 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3005 CmdArgs.push_back("-fdiagnostics-format");
3006 CmdArgs.push_back(A->getValue());
3007 }
3008
3009 if (const Arg *A = Args.getLastArg(
3010 options::OPT_fdiagnostics_show_note_include_stack,
3011 options::OPT_fno_diagnostics_show_note_include_stack)) {
3012 const Option &O = A->getOption();
3013 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3014 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3015 else
3016 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3017 }
3018
3019 // Color diagnostics are parsed by the driver directly from argv and later
3020 // re-parsed to construct this job; claim any possible color diagnostic here
3021 // to avoid warn_drv_unused_argument and diagnose bad
3022 // OPT_fdiagnostics_color_EQ values.
3023 for (const Arg *A : Args) {
3024 const Option &O = A->getOption();
3025 if (!O.matches(options::OPT_fcolor_diagnostics) &&
3026 !O.matches(options::OPT_fdiagnostics_color) &&
3027 !O.matches(options::OPT_fno_color_diagnostics) &&
3028 !O.matches(options::OPT_fno_diagnostics_color) &&
3029 !O.matches(options::OPT_fdiagnostics_color_EQ))
3030 continue;
3031
3032 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3033 StringRef Value(A->getValue());
3034 if (Value != "always" && Value != "never" && Value != "auto")
3035 D.Diag(diag::err_drv_clang_unsupported)
3036 << ("-fdiagnostics-color=" + Value).str();
3037 }
3038 A->claim();
3039 }
3040
3041 if (D.getDiags().getDiagnosticOptions().ShowColors)
3042 CmdArgs.push_back("-fcolor-diagnostics");
3043
3044 if (Args.hasArg(options::OPT_fansi_escape_codes))
3045 CmdArgs.push_back("-fansi-escape-codes");
3046
3047 if (!Args.hasFlag(options::OPT_fshow_source_location,
3048 options::OPT_fno_show_source_location))
3049 CmdArgs.push_back("-fno-show-source-location");
3050
3051 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3052 CmdArgs.push_back("-fdiagnostics-absolute-paths");
3053
3054 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3055 ColumnDefault))
3056 CmdArgs.push_back("-fno-show-column");
3057
3058 if (!Args.hasFlag(options::OPT_fspell_checking,
3059 options::OPT_fno_spell_checking))
3060 CmdArgs.push_back("-fno-spell-checking");
3061}
3062
3063enum class DwarfFissionKind { None, Split, Single };
3064
3065static DwarfFissionKind getDebugFissionKind(const Driver &D,
3066 const ArgList &Args, Arg *&Arg) {
3067 Arg =
3068 Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3069 if (!Arg)
3070 return DwarfFissionKind::None;
3071
3072 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3073 return DwarfFissionKind::Split;
3074
3075 StringRef Value = Arg->getValue();
3076 if (Value == "split")
3077 return DwarfFissionKind::Split;
3078 if (Value == "single")
3079 return DwarfFissionKind::Single;
3080
3081 D.Diag(diag::err_drv_unsupported_option_argument)
3082 << Arg->getOption().getName() << Arg->getValue();
3083 return DwarfFissionKind::None;
3084}
3085
3086static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3087 const llvm::Triple &T, const ArgList &Args,
3088 bool EmitCodeView, bool IsWindowsMSVC,
3089 ArgStringList &CmdArgs,
3090 codegenoptions::DebugInfoKind &DebugInfoKind,
3091 DwarfFissionKind &DwarfFission) {
3092 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3093 options::OPT_fno_debug_info_for_profiling, false) &&
3094 checkDebugInfoOption(
3095 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3096 CmdArgs.push_back("-fdebug-info-for-profiling");
3097
3098 // The 'g' groups options involve a somewhat intricate sequence of decisions
3099 // about what to pass from the driver to the frontend, but by the time they
3100 // reach cc1 they've been factored into three well-defined orthogonal choices:
3101 // * what level of debug info to generate
3102 // * what dwarf version to write
3103 // * what debugger tuning to use
3104 // This avoids having to monkey around further in cc1 other than to disable
3105 // codeview if not running in a Windows environment. Perhaps even that
3106 // decision should be made in the driver as well though.
3107 unsigned DWARFVersion = 0;
3108 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3109
3110 bool SplitDWARFInlining =
3111 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3112 options::OPT_fno_split_dwarf_inlining, true);
3113
3114 Args.ClaimAllArgs(options::OPT_g_Group);
3115
3116 Arg* SplitDWARFArg;
3117 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3118
3119 if (DwarfFission != DwarfFissionKind::None &&
3120 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3121 DwarfFission = DwarfFissionKind::None;
3122 SplitDWARFInlining = false;
3123 }
3124
3125 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
3126 if (checkDebugInfoOption(A, Args, D, TC)) {
3127 // If the last option explicitly specified a debug-info level, use it.
3128 if (A->getOption().matches(options::OPT_gN_Group)) {
3129 DebugInfoKind = DebugLevelToInfoKind(*A);
3130 // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
3131 // But -gsplit-dwarf is not a g_group option, hence we have to check the
3132 // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
3133 // This gets a bit more complicated if you've disabled inline info in
3134 // the skeleton CUs (SplitDWARFInlining) - then there's value in
3135 // composing split-dwarf and line-tables-only, so let those compose
3136 // naturally in that case. And if you just turned off debug info,
3137 // (-gsplit-dwarf -g0) - do that.
3138 if (DwarfFission != DwarfFissionKind::None) {
3139 if (A->getIndex() > SplitDWARFArg->getIndex()) {
3140 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3141 DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3142 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3143 SplitDWARFInlining))
3144 DwarfFission = DwarfFissionKind::None;
3145 } else if (SplitDWARFInlining)
3146 DebugInfoKind = codegenoptions::NoDebugInfo;
3147 }
3148 } else {
3149 // For any other 'g' option, use Limited.
3150 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3151 }
3152 } else {
3153 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3154 }
3155 }
3156
3157 // If a debugger tuning argument appeared, remember it.
3158 if (const Arg *A =
3159 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3160 if (checkDebugInfoOption(A, Args, D, TC)) {
3161 if (A->getOption().matches(options::OPT_glldb))
3162 DebuggerTuning = llvm::DebuggerKind::LLDB;
3163 else if (A->getOption().matches(options::OPT_gsce))
3164 DebuggerTuning = llvm::DebuggerKind::SCE;
3165 else
3166 DebuggerTuning = llvm::DebuggerKind::GDB;
3167 }
3168 }
3169
3170 // If a -gdwarf argument appeared, remember it.
3171 if (const Arg *A =
3172 Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
3173 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
3174 if (checkDebugInfoOption(A, Args, D, TC))
3175 DWARFVersion = DwarfVersionNum(A->getSpelling());
3176
3177 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3178 if (checkDebugInfoOption(A, Args, D, TC))
3179 EmitCodeView = true;
3180 }
3181
3182 // If the user asked for debug info but did not explicitly specify -gcodeview
3183 // or -gdwarf, ask the toolchain for the default format.
3184 if (!EmitCodeView && DWARFVersion == 0 &&
3185 DebugInfoKind != codegenoptions::NoDebugInfo) {
3186 switch (TC.getDefaultDebugFormat()) {
3187 case codegenoptions::DIF_CodeView:
3188 EmitCodeView = true;
3189 break;
3190 case codegenoptions::DIF_DWARF:
3191 DWARFVersion = TC.GetDefaultDwarfVersion();
3192 break;
3193 }
3194 }
3195
3196 // -gline-directives-only supported only for the DWARF debug info.
3197 if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3198 DebugInfoKind = codegenoptions::NoDebugInfo;
3199
3200 // We ignore flag -gstrict-dwarf for now.
3201 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3202 Args.ClaimAllArgs(options::OPT_g_flags_Group);
3203
3204 // Column info is included by default for everything except SCE and
3205 // CodeView. Clang doesn't track end columns, just starting columns, which,
3206 // in theory, is fine for CodeView (and PDB). In practice, however, the
3207 // Microsoft debuggers don't handle missing end columns well, so it's better
3208 // not to include any column info.
3209 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3210 (void)checkDebugInfoOption(A, Args, D, TC);
3211 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3212 /*Default=*/!EmitCodeView &&
3213 DebuggerTuning != llvm::DebuggerKind::SCE))
3214 CmdArgs.push_back("-dwarf-column-info");
3215
3216 // FIXME: Move backend command line options to the module.
3217 // If -gline-tables-only or -gline-directives-only is the last option it wins.
3218 if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3219 if (checkDebugInfoOption(A, Args, D, TC)) {
3220 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3221 DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3222 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3223 CmdArgs.push_back("-dwarf-ext-refs");
3224 CmdArgs.push_back("-fmodule-format=obj");
3225 }
3226 }
3227
3228 // -gsplit-dwarf should turn on -g and enable the backend dwarf
3229 // splitting and extraction.
3230 // FIXME: Currently only works on Linux and Fuchsia.
3231 if (T.isOSLinux() || T.isOSFuchsia()) {
3232 if (!SplitDWARFInlining)
3233 CmdArgs.push_back("-fno-split-dwarf-inlining");
3234
3235 if (DwarfFission != DwarfFissionKind::None) {
3236 if (DebugInfoKind == codegenoptions::NoDebugInfo)
3237 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3238
3239 if (DwarfFission == DwarfFissionKind::Single)
3240 CmdArgs.push_back("-enable-split-dwarf=single");
3241 else
3242 CmdArgs.push_back("-enable-split-dwarf");
3243 }
3244 }
3245
3246 // After we've dealt with all combinations of things that could
3247 // make DebugInfoKind be other than None or DebugLineTablesOnly,
3248 // figure out if we need to "upgrade" it to standalone debug info.
3249 // We parse these two '-f' options whether or not they will be used,
3250 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3251 bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
3252 options::OPT_fno_standalone_debug,
3253 TC.GetDefaultStandaloneDebug());
3254 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3255 (void)checkDebugInfoOption(A, Args, D, TC);
3256 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3257 DebugInfoKind = codegenoptions::FullDebugInfo;
3258
3259 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3260 false)) {
3261 // Source embedding is a vendor extension to DWARF v5. By now we have
3262 // checked if a DWARF version was stated explicitly, and have otherwise
3263 // fallen back to the target default, so if this is still not at least 5
3264 // we emit an error.
3265 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3266 if (DWARFVersion < 5)
3267 D.Diag(diag::err_drv_argument_only_allowed_with)
3268 << A->getAsString(Args) << "-gdwarf-5";
3269 else if (checkDebugInfoOption(A, Args, D, TC))
3270 CmdArgs.push_back("-gembed-source");
3271 }
3272
3273 if (EmitCodeView) {
3274 CmdArgs.push_back("-gcodeview");
3275
3276 // Emit codeview type hashes if requested.
3277 if (Args.hasFlag(options::OPT_gcodeview_ghash,
3278 options::OPT_gno_codeview_ghash, false)) {
3279 CmdArgs.push_back("-gcodeview-ghash");
3280 }
3281 }
3282
3283 // Adjust the debug info kind for the given toolchain.
3284 TC.adjustDebugInfoKind(DebugInfoKind, Args);
3285
3286 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3287 DebuggerTuning);
3288
3289 // -fdebug-macro turns on macro debug info generation.
3290 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3291 false))
3292 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3293 D, TC))
3294 CmdArgs.push_back("-debug-info-macro");
3295
3296 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3297 const auto *PubnamesArg =
3298 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3299 options::OPT_gpubnames, options::OPT_gno_pubnames);
3300 if (DwarfFission != DwarfFissionKind::None ||
3301 DebuggerTuning == llvm::DebuggerKind::LLDB ||
3302 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3303 if (!PubnamesArg ||
3304 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3305 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3306 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3307 options::OPT_gpubnames)
3308 ? "-gpubnames"
3309 : "-ggnu-pubnames");
3310
3311 if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3312 options::OPT_fno_debug_ranges_base_address, false)) {
3313 CmdArgs.push_back("-fdebug-ranges-base-address");
3314 }
3315
3316 // -gdwarf-aranges turns on the emission of the aranges section in the
3317 // backend.
3318 // Always enabled for SCE tuning.
3319 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3320 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3321 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3322 if (NeedAranges) {
3323 CmdArgs.push_back("-mllvm");
3324 CmdArgs.push_back("-generate-arange-section");
3325 }
3326
3327 if (Args.hasFlag(options::OPT_fdebug_types_section,
3328 options::OPT_fno_debug_types_section, false)) {
3329 if (!T.isOSBinFormatELF()) {
3330 D.Diag(diag::err_drv_unsupported_opt_for_target)
3331 << Args.getLastArg(options::OPT_fdebug_types_section)
3332 ->getAsString(Args)
3333 << T.getTriple();
3334 } else if (checkDebugInfoOption(
3335 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3336 TC)) {
3337 CmdArgs.push_back("-mllvm");
3338 CmdArgs.push_back("-generate-type-units");
3339 }
3340 }
3341
3342 // Decide how to render forward declarations of template instantiations.
3343 // SCE wants full descriptions, others just get them in the name.
3344 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3345 CmdArgs.push_back("-debug-forward-template-params");
3346
3347 // Do we need to explicitly import anonymous namespaces into the parent
3348 // scope?
3349 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3350 CmdArgs.push_back("-dwarf-explicit-import");
3351
3352 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3353}
3354
3355void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3356 const InputInfo &Output, const InputInfoList &Inputs,
3357 const ArgList &Args, const char *LinkingOutput) const {
3358 const auto &TC = getToolChain();
3359 const llvm::Triple &RawTriple = TC.getTriple();
3360 const llvm::Triple &Triple = TC.getEffectiveTriple();
3361 const std::string &TripleStr = Triple.getTriple();
3362
3363 bool KernelOrKext =
3364 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3365 const Driver &D = TC.getDriver();
3366 ArgStringList CmdArgs;
3367
3368 // Check number of inputs for sanity. We need at least one input.
3369 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3369, __PRETTY_FUNCTION__))
;
3370 // CUDA/HIP compilation may have multiple inputs (source file + results of
3371 // device-side compilations). OpenMP device jobs also take the host IR as a
3372 // second input. Module precompilation accepts a list of header files to
3373 // include as part of the module. All other jobs are expected to have exactly
3374 // one input.
3375 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3376 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3377 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3378 bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3379
3380 // A header module compilation doesn't have a main input file, so invent a
3381 // fake one as a placeholder.
3382 const char *ModuleName = [&]{
3383 auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3384 return ModuleNameArg ? ModuleNameArg->getValue() : "";
3385 }();
3386 InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3387
3388 const InputInfo &Input =
3389 IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3390
3391 InputInfoList ModuleHeaderInputs;
3392 const InputInfo *CudaDeviceInput = nullptr;
3393 const InputInfo *OpenMPDeviceInput = nullptr;
3394 for (const InputInfo &I : Inputs) {
3395 if (&I == &Input) {
3396 // This is the primary input.
3397 } else if (IsHeaderModulePrecompile &&
3398 types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3399 types::ID Expected = HeaderModuleInput.getType();
3400 if (I.getType() != Expected) {
3401 D.Diag(diag::err_drv_module_header_wrong_kind)
3402 << I.getFilename() << types::getTypeName(I.getType())
3403 << types::getTypeName(Expected);
3404 }
3405 ModuleHeaderInputs.push_back(I);
3406 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3407 CudaDeviceInput = &I;
3408 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3409 OpenMPDeviceInput = &I;
3410 } else {
3411 llvm_unreachable("unexpectedly given multiple inputs")::llvm::llvm_unreachable_internal("unexpectedly given multiple inputs"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3411)
;
3412 }
3413 }
3414
3415 const llvm::Triple *AuxTriple = IsCuda ? TC.getAuxTriple() : nullptr;
3416 bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3417 bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3418 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3419 bool IsIAMCU = RawTriple.isOSIAMCU();
3420
3421 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3422 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3423 // Windows), we need to pass Windows-specific flags to cc1.
3424 if (IsCuda || IsHIP) {
3425 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3426 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3427 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
Value stored to 'IsWindowsCygnus' is never read
3428 }
3429
3430 // C++ is not supported for IAMCU.
3431 if (IsIAMCU && types::isCXX(Input.getType()))
3432 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3433
3434 // Invoke ourselves in -cc1 mode.
3435 //
3436 // FIXME: Implement custom jobs for internal actions.
3437 CmdArgs.push_back("-cc1");
3438
3439 // Add the "effective" target triple.
3440 CmdArgs.push_back("-triple");
3441 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3442
3443 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3444 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3445 Args.ClaimAllArgs(options::OPT_MJ);
3446 }
3447
3448 if (IsCuda || IsHIP) {
3449 // We have to pass the triple of the host if compiling for a CUDA/HIP device
3450 // and vice-versa.
3451 std::string NormalizedTriple;
3452 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
3453 JA.isDeviceOffloading(Action::OFK_HIP))
3454 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3455 ->getTriple()
3456 .normalize();
3457 else
3458 NormalizedTriple =
3459 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3460 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
3461 ->getTriple()
3462 .normalize();
3463
3464 CmdArgs.push_back("-aux-triple");
3465 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3466 }
3467
3468 if (IsOpenMPDevice) {
3469 // We have to pass the triple of the host if compiling for an OpenMP device.
3470 std::string NormalizedTriple =
3471 C.getSingleOffloadToolChain<Action::OFK_Host>()
3472 ->getTriple()
3473 .normalize();
3474 CmdArgs.push_back("-aux-triple");
3475 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3476 }
3477
3478 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3479 Triple.getArch() == llvm::Triple::thumb)) {
3480 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3481 unsigned Version;
3482 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3483 if (Version < 7)
3484 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3485 << TripleStr;
3486 }
3487
3488 // Push all default warning arguments that are specific to
3489 // the given target. These come before user provided warning options
3490 // are provided.
3491 TC.addClangWarningOptions(CmdArgs);
3492
3493 // Select the appropriate action.
3494 RewriteKind rewriteKind = RK_None;
3495
3496 if (isa<AnalyzeJobAction>(JA)) {
3497 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3497, __PRETTY_FUNCTION__))
;
3498 CmdArgs.push_back("-analyze");
3499 } else if (isa<MigrateJobAction>(JA)) {
3500 CmdArgs.push_back("-migrate");
3501 } else if (isa<PreprocessJobAction>(JA)) {
3502 if (Output.getType() == types::TY_Dependencies)
3503 CmdArgs.push_back("-Eonly");
3504 else {
3505 CmdArgs.push_back("-E");
3506 if (Args.hasArg(options::OPT_rewrite_objc) &&
3507 !Args.hasArg(options::OPT_g_Group))
3508 CmdArgs.push_back("-P");
3509 }
3510 } else if (isa<AssembleJobAction>(JA)) {
3511 CmdArgs.push_back("-emit-obj");
3512
3513 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3514
3515 // Also ignore explicit -force_cpusubtype_ALL option.
3516 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3517 } else if (isa<PrecompileJobAction>(JA)) {
3518 if (JA.getType() == types::TY_Nothing)
3519 CmdArgs.push_back("-fsyntax-only");
3520 else if (JA.getType() == types::TY_ModuleFile)
3521 CmdArgs.push_back(IsHeaderModulePrecompile
3522 ? "-emit-header-module"
3523 : "-emit-module-interface");
3524 else
3525 CmdArgs.push_back("-emit-pch");
3526 } else if (isa<VerifyPCHJobAction>(JA)) {
3527 CmdArgs.push_back("-verify-pch");
3528 } else {
3529 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3530, __PRETTY_FUNCTION__))
3530 "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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3530, __PRETTY_FUNCTION__))
;
3531 if (JA.getType() == types::TY_Nothing) {
3532 CmdArgs.push_back("-fsyntax-only");
3533 } else if (JA.getType() == types::TY_LLVM_IR ||
3534 JA.getType() == types::TY_LTO_IR) {
3535 CmdArgs.push_back("-emit-llvm");
3536 } else if (JA.getType() == types::TY_LLVM_BC ||
3537 JA.getType() == types::TY_LTO_BC) {
3538 CmdArgs.push_back("-emit-llvm-bc");
3539 } else if (JA.getType() == types::TY_PP_Asm) {
3540 CmdArgs.push_back("-S");
3541 } else if (JA.getType() == types::TY_AST) {
3542 CmdArgs.push_back("-emit-pch");
3543 } else if (JA.getType() == types::TY_ModuleFile) {
3544 CmdArgs.push_back("-module-file-info");
3545 } else if (JA.getType() == types::TY_RewrittenObjC) {
3546 CmdArgs.push_back("-rewrite-objc");
3547 rewriteKind = RK_NonFragile;
3548 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3549 CmdArgs.push_back("-rewrite-objc");
3550 rewriteKind = RK_Fragile;
3551 } else {
3552 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3552, __PRETTY_FUNCTION__))
;
3553 }
3554
3555 // Preserve use-list order by default when emitting bitcode, so that
3556 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3557 // same result as running passes here. For LTO, we don't need to preserve
3558 // the use-list order, since serialization to bitcode is part of the flow.
3559 if (JA.getType() == types::TY_LLVM_BC)
3560 CmdArgs.push_back("-emit-llvm-uselists");
3561
3562 // Device-side jobs do not support LTO.
3563 bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3564 JA.isDeviceOffloading(Action::OFK_Host));
3565
3566 if (D.isUsingLTO() && !isDeviceOffloadAction) {
3567 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3568
3569 // The Darwin and PS4 linkers currently use the legacy LTO API, which
3570 // does not support LTO unit features (CFI, whole program vtable opt)
3571 // under ThinLTO.
3572 if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3573 D.getLTOMode() == LTOK_Full)
3574 CmdArgs.push_back("-flto-unit");
3575 }
3576 }
3577
3578 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3579 if (!types::isLLVMIR(Input.getType()))
3580 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3581 << "-x ir";
3582 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3583 }
3584
3585 if (Args.getLastArg(options::OPT_save_temps_EQ))
3586 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3587
3588 // Embed-bitcode option.
3589 // Only white-listed flags below are allowed to be embedded.
3590 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3591 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3592 // Add flags implied by -fembed-bitcode.
3593 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3594 // Disable all llvm IR level optimizations.
3595 CmdArgs.push_back("-disable-llvm-passes");
3596
3597 // reject options that shouldn't be supported in bitcode
3598 // also reject kernel/kext
3599 static const constexpr unsigned kBitcodeOptionBlacklist[] = {
3600 options::OPT_mkernel,
3601 options::OPT_fapple_kext,
3602 options::OPT_ffunction_sections,
3603 options::OPT_fno_function_sections,
3604 options::OPT_fdata_sections,
3605 options::OPT_fno_data_sections,
3606 options::OPT_funique_section_names,
3607 options::OPT_fno_unique_section_names,
3608 options::OPT_mrestrict_it,
3609 options::OPT_mno_restrict_it,
3610 options::OPT_mstackrealign,
3611 options::OPT_mno_stackrealign,
3612 options::OPT_mstack_alignment,
3613 options::OPT_mcmodel_EQ,
3614 options::OPT_mlong_calls,
3615 options::OPT_mno_long_calls,
3616 options::OPT_ggnu_pubnames,
3617 options::OPT_gdwarf_aranges,
3618 options::OPT_fdebug_types_section,
3619 options::OPT_fno_debug_types_section,
3620 options::OPT_fdwarf_directory_asm,
3621 options::OPT_fno_dwarf_directory_asm,
3622 options::OPT_mrelax_all,
3623 options::OPT_mno_relax_all,
3624 options::OPT_ftrap_function_EQ,
3625 options::OPT_ffixed_r9,
3626 options::OPT_mfix_cortex_a53_835769,
3627 options::OPT_mno_fix_cortex_a53_835769,
3628 options::OPT_ffixed_x18,
3629 options::OPT_mglobal_merge,
3630 options::OPT_mno_global_merge,
3631 options::OPT_mred_zone,
3632 options::OPT_mno_red_zone,
3633 options::OPT_Wa_COMMA,
3634 options::OPT_Xassembler,
3635 options::OPT_mllvm,
3636 };
3637 for (const auto &A : Args)
3638 if (std::find(std::begin(kBitcodeOptionBlacklist),
3639 std::end(kBitcodeOptionBlacklist),
3640 A->getOption().getID()) !=
3641 std::end(kBitcodeOptionBlacklist))
3642 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
3643
3644 // Render the CodeGen options that need to be passed.
3645 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3646 options::OPT_fno_optimize_sibling_calls))
3647 CmdArgs.push_back("-mdisable-tail-calls");
3648
3649 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
3650 CmdArgs);
3651
3652 // Render ABI arguments
3653 switch (TC.getArch()) {
3654 default: break;
3655 case llvm::Triple::arm:
3656 case llvm::Triple::armeb:
3657 case llvm::Triple::thumbeb:
3658 RenderARMABI(Triple, Args, CmdArgs);
3659 break;
3660 case llvm::Triple::aarch64:
3661 case llvm::Triple::aarch64_be:
3662 RenderAArch64ABI(Triple, Args, CmdArgs);
3663 break;
3664 }
3665
3666 // Optimization level for CodeGen.
3667 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3668 if (A->getOption().matches(options::OPT_O4)) {
3669 CmdArgs.push_back("-O3");
3670 D.Diag(diag::warn_O4_is_O3);
3671 } else {
3672 A->render(Args, CmdArgs);
3673 }
3674 }
3675
3676 // Input/Output file.
3677 if (Output.getType() == types::TY_Dependencies) {
3678 // Handled with other dependency code.
3679 } else if (Output.isFilename()) {
3680 CmdArgs.push_back("-o");
3681 CmdArgs.push_back(Output.getFilename());
3682 } else {
3683 assert(Output.isNothing() && "Input output.")((Output.isNothing() && "Input output.") ? static_cast
<void> (0) : __assert_fail ("Output.isNothing() && \"Input output.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3683, __PRETTY_FUNCTION__))
;
3684 }
3685
3686 for (const auto &II : Inputs) {
3687 addDashXForInput(Args, II, CmdArgs);
3688 if (II.isFilename())
3689 CmdArgs.push_back(II.getFilename());
3690 else
3691 II.getInputArg().renderAsInput(Args, CmdArgs);
3692 }
3693
3694 C.addCommand(llvm::make_unique<Command>(JA, *this, D.getClangProgramPath(),
3695 CmdArgs, Inputs));
3696 return;
3697 }
3698
3699 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
3700 CmdArgs.push_back("-fembed-bitcode=marker");
3701
3702 // We normally speed up the clang process a bit by skipping destructors at
3703 // exit, but when we're generating diagnostics we can rely on some of the
3704 // cleanup.
3705 if (!C.isForDiagnostics())
3706 CmdArgs.push_back("-disable-free");
3707
3708#ifdef NDEBUG
3709 const bool IsAssertBuild = false;
3710#else
3711 const bool IsAssertBuild = true;
3712#endif
3713
3714 // Disable the verification pass in -asserts builds.
3715 if (!IsAssertBuild)
3716 CmdArgs.push_back("-disable-llvm-verifier");
3717
3718 // Discard value names in assert builds unless otherwise specified.
3719 if (Args.hasFlag(options::OPT_fdiscard_value_names,
3720 options::OPT_fno_discard_value_names, !IsAssertBuild))
3721 CmdArgs.push_back("-discard-value-names");
3722
3723 // Set the main file name, so that debug info works even with
3724 // -save-temps.
3725 CmdArgs.push_back("-main-file-name");
3726 CmdArgs.push_back(getBaseInputName(Args, Input));
3727
3728 // Some flags which affect the language (via preprocessor
3729 // defines).
3730 if (Args.hasArg(options::OPT_static))
3731 CmdArgs.push_back("-static-define");
3732
3733 if (Args.hasArg(options::OPT_municode))
3734 CmdArgs.push_back("-DUNICODE");
3735
3736 if (isa<AnalyzeJobAction>(JA))
3737 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3738
3739 // Enable compatilibily mode to avoid analyzer-config related errors.
3740 // Since we can't access frontend flags through hasArg, let's manually iterate
3741 // through them.
3742 bool FoundAnalyzerConfig = false;
3743 for (auto Arg : Args.filtered(options::OPT_Xclang))
3744 if (StringRef(Arg->getValue()) == "-analyzer-config") {
3745 FoundAnalyzerConfig = true;
3746 break;
3747 }
3748 if (!FoundAnalyzerConfig)
3749 for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
3750 if (StringRef(Arg->getValue()) == "-analyzer-config") {
3751 FoundAnalyzerConfig = true;
3752 break;
3753 }
3754 if (FoundAnalyzerConfig)
3755 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
3756
3757 CheckCodeGenerationOptions(D, Args);
3758
3759 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
3760 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3760, __PRETTY_FUNCTION__))
;
3761 if (FunctionAlignment) {
3762 CmdArgs.push_back("-function-alignment");
3763 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3764 }
3765
3766 llvm::Reloc::Model RelocationModel;
3767 unsigned PICLevel;
3768 bool IsPIE;
3769 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
3770
3771 const char *RMName = RelocationModelName(RelocationModel);
3772
3773 if ((RelocationModel == llvm::Reloc::ROPI ||
3774 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3775 types::isCXX(Input.getType()) &&
3776 !Args.hasArg(options::OPT_fallow_unsupported))
3777 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3778
3779 if (RMName) {
3780 CmdArgs.push_back("-mrelocation-model");
3781 CmdArgs.push_back(RMName);
3782 }
3783 if (PICLevel > 0) {
3784 CmdArgs.push_back("-pic-level");
3785 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3786 if (IsPIE)
3787 CmdArgs.push_back("-pic-is-pie");
3788 }
3789
3790 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3791 CmdArgs.push_back("-meabi");
3792 CmdArgs.push_back(A->getValue());
3793 }
3794
3795 CmdArgs.push_back("-mthread-model");
3796 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3797 if (!TC.isThreadModelSupported(A->getValue()))
3798 D.Diag(diag::err_drv_invalid_thread_model_for_target)
3799 << A->getValue() << A->getAsString(Args);
3800 CmdArgs.push_back(A->getValue());
3801 }
3802 else
3803 CmdArgs.push_back(Args.MakeArgString(TC.getThreadModel()));
3804
3805 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3806
3807 if (Args.hasFlag(options::OPT_fmerge_all_constants,
3808 options::OPT_fno_merge_all_constants, false))
3809 CmdArgs.push_back("-fmerge-all-constants");
3810
3811 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3812 options::OPT_fdelete_null_pointer_checks, false))
3813 CmdArgs.push_back("-fno-delete-null-pointer-checks");
3814
3815 // LLVM Code Generator Options.
3816
3817 if (Args.hasArg(options::OPT_frewrite_map_file) ||
3818 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3819 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3820 options::OPT_frewrite_map_file_EQ)) {
3821 StringRef Map = A->getValue();
3822 if (!llvm::sys::fs::exists(Map)) {
3823 D.Diag(diag::err_drv_no_such_file) << Map;
3824 } else {
3825 CmdArgs.push_back("-frewrite-map-file");
3826 CmdArgs.push_back(A->getValue());
3827 A->claim();
3828 }
3829 }
3830 }
3831
3832 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3833 StringRef v = A->getValue();
3834 CmdArgs.push_back("-mllvm");
3835 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3836 A->claim();
3837 }
3838
3839 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3840 true))
3841 CmdArgs.push_back("-fno-jump-tables");
3842
3843 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3844 options::OPT_fno_profile_sample_accurate, false))
3845 CmdArgs.push_back("-fprofile-sample-accurate");
3846
3847 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3848 options::OPT_fno_preserve_as_comments, true))
3849 CmdArgs.push_back("-fno-preserve-as-comments");
3850
3851 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3852 CmdArgs.push_back("-mregparm");
3853 CmdArgs.push_back(A->getValue());
3854 }
3855
3856 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3857 options::OPT_freg_struct_return)) {
3858 if (TC.getArch() != llvm::Triple::x86) {
3859 D.Diag(diag::err_drv_unsupported_opt_for_target)
3860 << A->getSpelling() << RawTriple.str();
3861 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3862 CmdArgs.push_back("-fpcc-struct-return");
3863 } else {
3864 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3864, __PRETTY_FUNCTION__))
;
3865 CmdArgs.push_back("-freg-struct-return");
3866 }
3867 }
3868
3869 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3870 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3871
3872 if (shouldUseFramePointer(Args, RawTriple))
3873 CmdArgs.push_back("-mdisable-fp-elim");
3874 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3875 options::OPT_fno_zero_initialized_in_bss))
3876 CmdArgs.push_back("-mno-zero-initialized-in-bss");
3877
3878 bool OFastEnabled = isOptimizationLevelFast(Args);
3879 // If -Ofast is the optimization level, then -fstrict-aliasing should be
3880 // enabled. This alias option is being used to simplify the hasFlag logic.
3881 OptSpecifier StrictAliasingAliasOption =
3882 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3883 // We turn strict aliasing off by default if we're in CL mode, since MSVC
3884 // doesn't do any TBAA.
3885 bool TBAAOnByDefault = !D.IsCLMode();
3886 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3887 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3888 CmdArgs.push_back("-relaxed-aliasing");
3889 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3890 options::OPT_fno_struct_path_tbaa))
3891 CmdArgs.push_back("-no-struct-path-tbaa");
3892 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3893 false))
3894 CmdArgs.push_back("-fstrict-enums");
3895 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3896 true))
3897 CmdArgs.push_back("-fno-strict-return");
3898 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3899 options::OPT_fno_allow_editor_placeholders, false))
3900 CmdArgs.push_back("-fallow-editor-placeholders");
3901 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3902 options::OPT_fno_strict_vtable_pointers,
3903 false))
3904 CmdArgs.push_back("-fstrict-vtable-pointers");
3905 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3906 options::OPT_fno_force_emit_vtables,
3907 false))
3908 CmdArgs.push_back("-fforce-emit-vtables");
3909 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3910 options::OPT_fno_optimize_sibling_calls))
3911 CmdArgs.push_back("-mdisable-tail-calls");
3912 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
3913 options::OPT_fescaping_block_tail_calls, false))
3914 CmdArgs.push_back("-fno-escaping-block-tail-calls");
3915
3916 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3917 options::OPT_fno_fine_grained_bitfield_accesses);
3918
3919 // Handle segmented stacks.
3920 if (Args.hasArg(options::OPT_fsplit_stack))
3921 CmdArgs.push_back("-split-stacks");
3922
3923 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs);
3924
3925 // Decide whether to use verbose asm. Verbose assembly is the default on
3926 // toolchains which have the integrated assembler on by default.
3927 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
3928 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3929 IsIntegratedAssemblerDefault) ||
3930 Args.hasArg(options::OPT_dA))
3931 CmdArgs.push_back("-masm-verbose");
3932
3933 if (!TC.useIntegratedAs())
3934 CmdArgs.push_back("-no-integrated-as");
3935
3936 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3937 CmdArgs.push_back("-mdebug-pass");
3938 CmdArgs.push_back("Structure");
3939 }
3940 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3941 CmdArgs.push_back("-mdebug-pass");
3942 CmdArgs.push_back("Arguments");
3943 }
3944
3945 // Enable -mconstructor-aliases except on darwin, where we have to work around
3946 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3947 // aliases aren't supported.
3948 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3949 CmdArgs.push_back("-mconstructor-aliases");
3950
3951 // Darwin's kernel doesn't support guard variables; just die if we
3952 // try to use them.
3953 if (KernelOrKext && RawTriple.isOSDarwin())
3954 CmdArgs.push_back("-fforbid-guard-variables");
3955
3956 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3957 false)) {
3958 CmdArgs.push_back("-mms-bitfields");
3959 }
3960
3961 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3962 options::OPT_mno_pie_copy_relocations,
3963 false)) {
3964 CmdArgs.push_back("-mpie-copy-relocations");
3965 }
3966
3967 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3968 CmdArgs.push_back("-fno-plt");
3969 }
3970
3971 // -fhosted is default.
3972 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3973 // use Freestanding.
3974 bool Freestanding =
3975 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3976 KernelOrKext;
3977 if (Freestanding)
3978 CmdArgs.push_back("-ffreestanding");
3979
3980 // This is a coarse approximation of what llvm-gcc actually does, both
3981 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3982 // complicated ways.
3983 bool AsynchronousUnwindTables =
3984 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3985 options::OPT_fno_asynchronous_unwind_tables,
3986 (TC.IsUnwindTablesDefault(Args) ||
3987 TC.getSanitizerArgs().needsUnwindTables()) &&
3988 !Freestanding);
3989 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3990 AsynchronousUnwindTables))
3991 CmdArgs.push_back("-munwind-tables");
3992
3993 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
3994
3995 // FIXME: Handle -mtune=.
3996 (void)Args.hasArg(options::OPT_mtune_EQ);
3997
3998 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
3999 CmdArgs.push_back("-mcode-model");
4000 CmdArgs.push_back(A->getValue());
4001 }
4002
4003 // Add the target cpu
4004 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4005 if (!CPU.empty()) {
4006 CmdArgs.push_back("-target-cpu");
4007 CmdArgs.push_back(Args.MakeArgString(CPU));
4008 }
4009
4010 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4011
4012 // These two are potentially updated by AddClangCLArgs.
4013 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
4014 bool EmitCodeView = false;
4015
4016 // Add clang-cl arguments.
4017 types::ID InputType = Input.getType();
4018 if (D.IsCLMode())
4019 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4020
4021 DwarfFissionKind DwarfFission;
4022 RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, IsWindowsMSVC,
4023 CmdArgs, DebugInfoKind, DwarfFission);
4024
4025 // Add the split debug info name to the command lines here so we
4026 // can propagate it to the backend.
4027 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4028 (RawTriple.isOSLinux() || RawTriple.isOSFuchsia()) &&
4029 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4030 isa<BackendJobAction>(JA));
4031 const char *SplitDWARFOut;
4032 if (SplitDWARF) {
4033 CmdArgs.push_back("-split-dwarf-file");
4034 SplitDWARFOut = SplitDebugName(Args, Output);
4035 CmdArgs.push_back(SplitDWARFOut);
4036 }
4037
4038 // Pass the linker version in use.
4039 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4040 CmdArgs.push_back("-target-linker-version");
4041 CmdArgs.push_back(A->getValue());
4042 }
4043
4044 if (!shouldUseLeafFramePointer(Args, RawTriple))
4045 CmdArgs.push_back("-momit-leaf-frame-pointer");
4046
4047 // Explicitly error on some things we know we don't support and can't just
4048 // ignore.
4049 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4050 Arg *Unsupported;
4051 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4052 TC.getArch() == llvm::Triple::x86) {
4053 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4054 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4055 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4056 << Unsupported->getOption().getName();
4057 }
4058 // The faltivec option has been superseded by the maltivec option.
4059 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4060 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4061 << Unsupported->getOption().getName()
4062 << "please use -maltivec and include altivec.h explicitly";
4063 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4064 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4065 << Unsupported->getOption().getName() << "please use -mno-altivec";
4066 }
4067
4068 Args.AddAllArgs(CmdArgs, options::OPT_v);
4069 Args.AddLastArg(CmdArgs, options::OPT_H);
4070 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4071 CmdArgs.push_back("-header-include-file");
4072 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4073 : "-");
4074 }
4075 Args.AddLastArg(CmdArgs, options::OPT_P);
4076 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4077
4078 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4079 CmdArgs.push_back("-diagnostic-log-file");
4080 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4081 : "-");
4082 }
4083
4084 bool UseSeparateSections = isUseSeparateSections(Triple);
4085
4086 if (Args.hasFlag(options::OPT_ffunction_sections,
4087 options::OPT_fno_function_sections, UseSeparateSections)) {
4088 CmdArgs.push_back("-ffunction-sections");
4089 }
4090
4091 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4092 UseSeparateSections)) {
4093 CmdArgs.push_back("-fdata-sections");
4094 }
4095
4096 if (!Args.hasFlag(options::OPT_funique_section_names,
4097 options::OPT_fno_unique_section_names, true))
4098 CmdArgs.push_back("-fno-unique-section-names");
4099
4100 if (auto *A = Args.getLastArg(
4101 options::OPT_finstrument_functions,
4102 options::OPT_finstrument_functions_after_inlining,
4103 options::OPT_finstrument_function_entry_bare))
4104 A->render(Args, CmdArgs);
4105
4106 // NVPTX doesn't support PGO or coverage. There's no runtime support for
4107 // sampling, overhead of call arc collection is way too high and there's no
4108 // way to collect the output.
4109 if (!Triple.isNVPTX())
4110 addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
4111
4112 if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
4113 ABICompatArg->render(Args, CmdArgs);
4114
4115 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4116 if (RawTriple.isPS4CPU() &&
4117 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4118 PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4119 PS4cpu::addSanitizerArgs(TC, CmdArgs);
4120 }
4121
4122 // Pass options for controlling the default header search paths.
4123 if (Args.hasArg(options::OPT_nostdinc)) {
4124 CmdArgs.push_back("-nostdsysteminc");
4125 CmdArgs.push_back("-nobuiltininc");
4126 } else {
4127 if (Args.hasArg(options::OPT_nostdlibinc))
4128 CmdArgs.push_back("-nostdsysteminc");
4129 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4130 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4131 }
4132
4133 // Pass the path to compiler resource files.
4134 CmdArgs.push_back("-resource-dir");
4135 CmdArgs.push_back(D.ResourceDir.c_str());
4136
4137 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4138
4139 RenderARCMigrateToolOptions(D, Args, CmdArgs);
4140
4141 // Add preprocessing options like -I, -D, etc. if we are using the
4142 // preprocessor.
4143 //
4144 // FIXME: Support -fpreprocessed
4145 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
4146 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4147
4148 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4149 // that "The compiler can only warn and ignore the option if not recognized".
4150 // When building with ccache, it will pass -D options to clang even on
4151 // preprocessed inputs and configure concludes that -fPIC is not supported.
4152 Args.ClaimAllArgs(options::OPT_D);
4153
4154 // Manually translate -O4 to -O3; let clang reject others.
4155 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4156 if (A->getOption().matches(options::OPT_O4)) {
4157 CmdArgs.push_back("-O3");
4158 D.Diag(diag::warn_O4_is_O3);
4159 } else {
4160 A->render(Args, CmdArgs);
4161 }
4162 }
4163
4164 // Warn about ignored options to clang.
4165 for (const Arg *A :
4166 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4167 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4168 A->claim();
4169 }
4170
4171 for (const Arg *A :
4172 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4173 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4174 A->claim();
4175 }
4176
4177 claimNoWarnArgs(Args);
4178
4179 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4180
4181 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4182 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4183 CmdArgs.push_back("-pedantic");
4184 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4185 Args.AddLastArg(CmdArgs, options::OPT_w);
4186
4187 // Fixed point flags
4188 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4189 /*Default=*/false))
4190 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4191
4192 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4193 // (-ansi is equivalent to -std=c89 or -std=c++98).
4194 //
4195 // If a std is supplied, only add -trigraphs if it follows the
4196 // option.
4197 bool ImplyVCPPCXXVer = false;
4198 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
4199 if (Std->getOption().matches(options::OPT_ansi))
4200 if (types::isCXX(InputType))
4201 CmdArgs.push_back("-std=c++98");
4202 else
4203 CmdArgs.push_back("-std=c89");
4204 else
4205 Std->render(Args, CmdArgs);
4206
4207 // If -f(no-)trigraphs appears after the language standard flag, honor it.
4208 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4209 options::OPT_ftrigraphs,
4210 options::OPT_fno_trigraphs))
4211 if (A != Std)
4212 A->render(Args, CmdArgs);
4213 } else {
4214 // Honor -std-default.
4215 //
4216 // FIXME: Clang doesn't correctly handle -std= when the input language
4217 // doesn't match. For the time being just ignore this for C++ inputs;
4218 // eventually we want to do all the standard defaulting here instead of
4219 // splitting it between the driver and clang -cc1.
4220 if (!types::isCXX(InputType))
4221 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4222 /*Joined=*/true);
4223 else if (IsWindowsMSVC)
4224 ImplyVCPPCXXVer = true;
4225
4226 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4227 options::OPT_fno_trigraphs);
4228 }
4229
4230 // GCC's behavior for -Wwrite-strings is a bit strange:
4231 // * In C, this "warning flag" changes the types of string literals from
4232 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
4233 // for the discarded qualifier.
4234 // * In C++, this is just a normal warning flag.
4235 //
4236 // Implementing this warning correctly in C is hard, so we follow GCC's
4237 // behavior for now. FIXME: Directly diagnose uses of a string literal as
4238 // a non-const char* in C, rather than using this crude hack.
4239 if (!types::isCXX(InputType)) {
4240 // FIXME: This should behave just like a warning flag, and thus should also
4241 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
4242 Arg *WriteStrings =
4243 Args.getLastArg(options::OPT_Wwrite_strings,
4244 options::OPT_Wno_write_strings, options::OPT_w);
4245 if (WriteStrings &&
4246 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
4247 CmdArgs.push_back("-fconst-strings");
4248 }
4249
4250 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
4251 // during C++ compilation, which it is by default. GCC keeps this define even
4252 // in the presence of '-w', match this behavior bug-for-bug.
4253 if (types::isCXX(InputType) &&
4254 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
4255 true)) {
4256 CmdArgs.push_back("-fdeprecated-macro");
4257 }
4258
4259 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
4260 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
4261 if (Asm->getOption().matches(options::OPT_fasm))
4262 CmdArgs.push_back("-fgnu-keywords");
4263 else
4264 CmdArgs.push_back("-fno-gnu-keywords");
4265 }
4266
4267 if (ShouldDisableDwarfDirectory(Args, TC))
4268 CmdArgs.push_back("-fno-dwarf-directory-asm");
4269
4270 if (ShouldDisableAutolink(Args, TC))
4271 CmdArgs.push_back("-fno-autolink");
4272
4273 // Add in -fdebug-compilation-dir if necessary.
4274 addDebugCompDirArg(Args, CmdArgs);
4275
4276 addDebugPrefixMapArg(D, Args, CmdArgs);
4277
4278 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
4279 options::OPT_ftemplate_depth_EQ)) {
4280 CmdArgs.push_back("-ftemplate-depth");
4281 CmdArgs.push_back(A->getValue());
4282 }
4283
4284 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
4285 CmdArgs.push_back("-foperator-arrow-depth");
4286 CmdArgs.push_back(A->getValue());
4287 }
4288
4289 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
4290 CmdArgs.push_back("-fconstexpr-depth");
4291 CmdArgs.push_back(A->getValue());
4292 }
4293
4294 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
4295 CmdArgs.push_back("-fconstexpr-steps");
4296 CmdArgs.push_back(A->getValue());
4297 }
4298
4299 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
4300 CmdArgs.push_back("-fbracket-depth");
4301 CmdArgs.push_back(A->getValue());
4302 }
4303
4304 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
4305 options::OPT_Wlarge_by_value_copy_def)) {
4306 if (A->getNumValues()) {
4307 StringRef bytes = A->getValue();
4308 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
4309 } else
4310 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
4311 }
4312
4313 if (Args.hasArg(options::OPT_relocatable_pch))
4314 CmdArgs.push_back("-relocatable-pch");
4315
4316 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
4317 static const char *kCFABIs[] = {
4318 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
4319 };
4320
4321 if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
4322 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
4323 else
4324 A->render(Args, CmdArgs);
4325 }
4326
4327 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
4328 CmdArgs.push_back("-fconstant-string-class");
4329 CmdArgs.push_back(A->getValue());
4330 }
4331
4332 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
4333 CmdArgs.push_back("-ftabstop");
4334 CmdArgs.push_back(A->getValue());
4335 }
4336
4337 if (Args.hasFlag(options::OPT_fstack_size_section,
4338 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
4339 CmdArgs.push_back("-fstack-size-section");
4340
4341 CmdArgs.push_back("-ferror-limit");
4342 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
4343 CmdArgs.push_back(A->getValue());
4344 else
4345 CmdArgs.push_back("19");
4346
4347 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
4348 CmdArgs.push_back("-fmacro-backtrace-limit");
4349 CmdArgs.push_back(A->getValue());
4350 }
4351
4352 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
4353 CmdArgs.push_back("-ftemplate-backtrace-limit");
4354 CmdArgs.push_back(A->getValue());
4355 }
4356
4357 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
4358 CmdArgs.push_back("-fconstexpr-backtrace-limit");
4359 CmdArgs.push_back(A->getValue());
4360 }
4361
4362 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
4363 CmdArgs.push_back("-fspell-checking-limit");
4364 CmdArgs.push_back(A->getValue());
4365 }
4366
4367 // Pass -fmessage-length=.
4368 CmdArgs.push_back("-fmessage-length");
4369 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
4370 CmdArgs.push_back(A->getValue());
4371 } else {
4372 // If -fmessage-length=N was not specified, determine whether this is a
4373 // terminal and, if so, implicitly define -fmessage-length appropriately.
4374 unsigned N = llvm::sys::Process::StandardErrColumns();
4375 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
4376 }
4377
4378 // -fvisibility= and -fvisibility-ms-compat are of a piece.
4379 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
4380 options::OPT_fvisibility_ms_compat)) {
4381 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
4382 CmdArgs.push_back("-fvisibility");
4383 CmdArgs.push_back(A->getValue());
4384 } else {
4385 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 4385, __PRETTY_FUNCTION__))
;
4386 CmdArgs.push_back("-fvisibility");
4387 CmdArgs.push_back("hidden");
4388 CmdArgs.push_back("-ftype-visibility");
4389 CmdArgs.push_back("default");
4390 }
4391 }
4392
4393 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
4394 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
4395
4396 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
4397
4398 // Forward -f (flag) options which we can pass directly.
4399 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
4400 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
4401 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
4402 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
4403 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
4404 options::OPT_fno_emulated_tls);
4405 Args.AddLastArg(CmdArgs, options::OPT_fkeep_static_consts);
4406
4407 // AltiVec-like language extensions aren't relevant for assembling.
4408 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
4409 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
4410
4411 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
4412 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
4413
4414 // Forward flags for OpenMP. We don't do this if the current action is an
4415 // device offloading action other than OpenMP.
4416 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
4417 options::OPT_fno_openmp, false) &&
4418 (JA.isDeviceOffloading(Action::OFK_None) ||
4419 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
4420 switch (D.getOpenMPRuntime(Args)) {
4421 case Driver::OMPRT_OMP:
4422 case Driver::OMPRT_IOMP5:
4423 // Clang can generate useful OpenMP code for these two runtime libraries.
4424 CmdArgs.push_back("-fopenmp");
4425
4426 // If no option regarding the use of TLS in OpenMP codegeneration is
4427 // given, decide a default based on the target. Otherwise rely on the
4428 // options and pass the right information to the frontend.
4429 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
4430 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
4431 CmdArgs.push_back("-fnoopenmp-use-tls");
4432 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4433 options::OPT_fno_openmp_simd);
4434 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4435 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
4436 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
4437
4438 // When in OpenMP offloading mode with NVPTX target, forward
4439 // cuda-mode flag
4440 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
4441 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
4442 CmdArgs.push_back("-fopenmp-cuda-mode");
4443
4444 // When in OpenMP offloading mode with NVPTX target, check if full runtime
4445 // is required.
4446 if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
4447 options::OPT_fno_openmp_cuda_force_full_runtime,
4448 /*Default=*/false))
4449 CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
4450 break;
4451 default:
4452 // By default, if Clang doesn't know how to generate useful OpenMP code
4453 // for a specific runtime library, we just don't pass the '-fopenmp' flag
4454 // down to the actual compilation.
4455 // FIXME: It would be better to have a mode which *only* omits IR
4456 // generation based on the OpenMP support so that we get consistent
4457 // semantic analysis, etc.
4458 break;
4459 }
4460 } else {
4461 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4462 options::OPT_fno_openmp_simd);
4463 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4464 }
4465
4466 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
4467 Sanitize.addArgs(TC, Args, CmdArgs, InputType);
4468
4469 const XRayArgs &XRay = TC.getXRayArgs();
4470 XRay.addArgs(TC, Args, CmdArgs, InputType);
4471
4472 if (TC.SupportsProfiling())
4473 Args.AddLastArg(CmdArgs, options::OPT_pg);
4474
4475 if (TC.SupportsProfiling())
4476 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4477
4478 // -flax-vector-conversions is default.
4479 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
4480 options::OPT_fno_lax_vector_conversions))
4481 CmdArgs.push_back("-fno-lax-vector-conversions");
4482
4483 if (Args.getLastArg(options::OPT_fapple_kext) ||
4484 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4485 CmdArgs.push_back("-fapple-kext");
4486
4487 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4488 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4489 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4490 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4491 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4492
4493 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4494 CmdArgs.push_back("-ftrapv-handler");
4495 CmdArgs.push_back(A->getValue());
4496 }
4497
4498 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4499
4500 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4501 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4502 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4503 if (A->getOption().matches(options::OPT_fwrapv))
4504 CmdArgs.push_back("-fwrapv");
4505 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4506 options::OPT_fno_strict_overflow)) {
4507 if (A->getOption().matches(options::OPT_fno_strict_overflow))
4508 CmdArgs.push_back("-fwrapv");
4509 }
4510
4511 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4512 options::OPT_fno_reroll_loops))
4513 if (A->getOption().matches(options::OPT_freroll_loops))
4514 CmdArgs.push_back("-freroll-loops");
4515
4516 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4517 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4518 options::OPT_fno_unroll_loops);
4519
4520 Args.AddLastArg(CmdArgs, options::OPT_pthread);
4521
4522 if (Args.hasFlag(options::OPT_mspeculative_load_hardening, options::OPT_mno_speculative_load_hardening,
4523 false))
4524 CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
4525
4526 RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
4527 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
4528
4529 // Translate -mstackrealign
4530 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4531 false))
4532 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4533
4534 if (Args.hasArg(options::OPT_mstack_alignment)) {
4535 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4536 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4537 }
4538
4539 if (Args.hasArg(options::OPT_mstack_probe_size)) {
4540 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4541
4542 if (!Size.empty())
4543 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4544 else
4545 CmdArgs.push_back("-mstack-probe-size=0");
4546 }
4547
4548 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4549 options::OPT_mno_stack_arg_probe, true))
4550 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4551
4552 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4553 options::OPT_mno_restrict_it)) {
4554 if (A->getOption().matches(options::OPT_mrestrict_it)) {
4555 CmdArgs.push_back("-mllvm");
4556 CmdArgs.push_back("-arm-restrict-it");
4557 } else {
4558 CmdArgs.push_back("-mllvm");
4559 CmdArgs.push_back("-arm-no-restrict-it");
4560 }
4561 } else if (Triple.isOSWindows() &&
4562 (Triple.getArch() == llvm::Triple::arm ||
4563 Triple.getArch() == llvm::Triple::thumb)) {
4564 // Windows on ARM expects restricted IT blocks
4565 CmdArgs.push_back("-mllvm");
4566 CmdArgs.push_back("-arm-restrict-it");
4567 }
4568
4569 // Forward -cl options to -cc1
4570 RenderOpenCLOptions(Args, CmdArgs);
4571
4572 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4573 CmdArgs.push_back(
4574 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4575 }
4576
4577 // Forward -f options with positive and negative forms; we translate
4578 // these by hand.
4579 if (Arg *A = getLastProfileSampleUseArg(Args)) {
4580 StringRef fname = A->getValue();
4581 if (!llvm::sys::fs::exists(fname))
4582 D.Diag(diag::err_drv_no_such_file) << fname;
4583 else
4584 A->render(Args, CmdArgs);
4585 }
4586 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
4587
4588 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
4589
4590 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4591 options::OPT_fno_assume_sane_operator_new))
4592 CmdArgs.push_back("-fno-assume-sane-operator-new");
4593
4594 // -fblocks=0 is default.
4595 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4596 TC.IsBlocksDefault()) ||
4597 (Args.hasArg(options::OPT_fgnu_runtime) &&
4598 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4599 !Args.hasArg(options::OPT_fno_blocks))) {
4600 CmdArgs.push_back("-fblocks");
4601
4602 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
4603 CmdArgs.push_back("-fblocks-runtime-optional");
4604 }
4605
4606 // -fencode-extended-block-signature=1 is default.
4607 if (TC.IsEncodeExtendedBlockSignatureDefault())
4608 CmdArgs.push_back("-fencode-extended-block-signature");
4609
4610 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4611 false) &&
4612 types::isCXX(InputType)) {
4613 CmdArgs.push_back("-fcoroutines-ts");
4614 }
4615
4616 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4617 options::OPT_fno_double_square_bracket_attributes);
4618
4619 bool HaveModules = false;
4620 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4621
4622 // -faccess-control is default.
4623 if (Args.hasFlag(options::OPT_fno_access_control,
4624 options::OPT_faccess_control, false))
4625 CmdArgs.push_back("-fno-access-control");
4626
4627 // -felide-constructors is the default.
4628 if (Args.hasFlag(options::OPT_fno_elide_constructors,
4629 options::OPT_felide_constructors, false))
4630 CmdArgs.push_back("-fno-elide-constructors");
4631
4632 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
4633
4634 if (KernelOrKext || (types::isCXX(InputType) &&
4635 (RTTIMode == ToolChain::RM_Disabled)))
4636 CmdArgs.push_back("-fno-rtti");
4637
4638 // -fshort-enums=0 is default for all architectures except Hexagon.
4639 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4640 TC.getArch() == llvm::Triple::hexagon))
4641 CmdArgs.push_back("-fshort-enums");
4642
4643 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4644
4645 // -fuse-cxa-atexit is default.
4646 if (!Args.hasFlag(
4647 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4648 !RawTriple.isOSWindows() &&
4649 RawTriple.getOS() != llvm::Triple::Solaris &&
4650 TC.getArch() != llvm::Triple::xcore &&
4651 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4652 RawTriple.hasEnvironment())) ||
4653 KernelOrKext)
4654 CmdArgs.push_back("-fno-use-cxa-atexit");
4655
4656 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4657 options::OPT_fno_register_global_dtors_with_atexit,
4658 RawTriple.isOSDarwin() && !KernelOrKext))
4659 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4660
4661 // -fms-extensions=0 is default.
4662 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4663 IsWindowsMSVC))
4664 CmdArgs.push_back("-fms-extensions");
4665
4666 // -fno-use-line-directives is default.
4667 if (Args.hasFlag(options::OPT_fuse_line_directives,
4668 options::OPT_fno_use_line_directives, false))
4669 CmdArgs.push_back("-fuse-line-directives");
4670
4671 // -fms-compatibility=0 is default.
4672 if (Args.hasFlag(options::OPT_fms_compatibility,
4673 options::OPT_fno_ms_compatibility,
4674 (IsWindowsMSVC &&
4675 Args.hasFlag(options::OPT_fms_extensions,
4676 options::OPT_fno_ms_extensions, true))))
4677 CmdArgs.push_back("-fms-compatibility");
4678
4679 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
4680 if (!MSVT.empty())
4681 CmdArgs.push_back(
4682 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4683
4684 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4685 if (ImplyVCPPCXXVer) {
4686 StringRef LanguageStandard;
4687 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4688 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4689 .Case("c++14", "-std=c++14")
4690 .Case("c++17", "-std=c++17")
4691 .Case("c++latest", "-std=c++2a")
4692 .Default("");
4693 if (LanguageStandard.empty())
4694 D.Diag(clang::diag::warn_drv_unused_argument)
4695 << StdArg->getAsString(Args);
4696 }
4697
4698 if (LanguageStandard.empty()) {
4699 if (IsMSVC2015Compatible)
4700 LanguageStandard = "-std=c++14";
4701 else
4702 LanguageStandard = "-std=c++11";
4703 }
4704
4705 CmdArgs.push_back(LanguageStandard.data());
4706 }
4707
4708 // -fno-borland-extensions is default.
4709 if (Args.hasFlag(options::OPT_fborland_extensions,
4710 options::OPT_fno_borland_extensions, false))
4711 CmdArgs.push_back("-fborland-extensions");
4712
4713 // -fno-declspec is default, except for PS4.
4714 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4715 RawTriple.isPS4()))
4716 CmdArgs.push_back("-fdeclspec");
4717 else if (Args.hasArg(options::OPT_fno_declspec))
4718 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4719
4720 // -fthreadsafe-static is default, except for MSVC compatibility versions less
4721 // than 19.
4722 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4723 options::OPT_fno_threadsafe_statics,
4724 !IsWindowsMSVC || IsMSVC2015Compatible))
4725 CmdArgs.push_back("-fno-threadsafe-statics");
4726
4727 // -fno-delayed-template-parsing is default, except when targeting MSVC.
4728 // Many old Windows SDK versions require this to parse.
4729 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4730 // compiler. We should be able to disable this by default at some point.
4731 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4732 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4733 CmdArgs.push_back("-fdelayed-template-parsing");
4734
4735 // -fgnu-keywords default varies depending on language; only pass if
4736 // specified.
4737 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4738 options::OPT_fno_gnu_keywords))
4739 A->render(Args, CmdArgs);
4740
4741 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4742 false))
4743 CmdArgs.push_back("-fgnu89-inline");
4744
4745 if (Args.hasArg(options::OPT_fno_inline))
4746 CmdArgs.push_back("-fno-inline");
4747
4748 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4749 options::OPT_finline_hint_functions,
4750 options::OPT_fno_inline_functions))
4751 InlineArg->render(Args, CmdArgs);
4752
4753 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4754 options::OPT_fno_experimental_new_pass_manager);
4755
4756 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4757 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
4758 Input, CmdArgs);
4759
4760 if (Args.hasFlag(options::OPT_fapplication_extension,
4761 options::OPT_fno_application_extension, false))
4762 CmdArgs.push_back("-fapplication-extension");
4763
4764 // Handle GCC-style exception args.
4765 if (!C.getDriver().IsCLMode())
4766 addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
4767
4768 // Handle exception personalities
4769 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4770 options::OPT_fseh_exceptions,
4771 options::OPT_fdwarf_exceptions);
4772 if (A) {
4773 const Option &Opt = A->getOption();
4774 if (Opt.matches(options::OPT_fsjlj_exceptions))
4775 CmdArgs.push_back("-fsjlj-exceptions");
4776 if (Opt.matches(options::OPT_fseh_exceptions))
4777 CmdArgs.push_back("-fseh-exceptions");
4778 if (Opt.matches(options::OPT_fdwarf_exceptions))
4779 CmdArgs.push_back("-fdwarf-exceptions");
4780 } else {
4781 switch (TC.GetExceptionModel(Args)) {
4782 default:
4783 break;
4784 case llvm::ExceptionHandling::DwarfCFI:
4785 CmdArgs.push_back("-fdwarf-exceptions");
4786 break;
4787 case llvm::ExceptionHandling::SjLj:
4788 CmdArgs.push_back("-fsjlj-exceptions");
4789 break;
4790 case llvm::ExceptionHandling::WinEH:
4791 CmdArgs.push_back("-fseh-exceptions");
4792 break;
4793 }
4794 }
4795
4796 // C++ "sane" operator new.
4797 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4798 options::OPT_fno_assume_sane_operator_new))
4799 CmdArgs.push_back("-fno-assume-sane-operator-new");
4800
4801 // -frelaxed-template-template-args is off by default, as it is a severe
4802 // breaking change until a corresponding change to template partial ordering
4803 // is provided.
4804 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4805 options::OPT_fno_relaxed_template_template_args, false))
4806 CmdArgs.push_back("-frelaxed-template-template-args");
4807
4808 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4809 // most platforms.
4810 if (Args.hasFlag(options::OPT_fsized_deallocation,
4811 options::OPT_fno_sized_deallocation, false))
4812 CmdArgs.push_back("-fsized-deallocation");
4813
4814 // -faligned-allocation is on by default in C++17 onwards and otherwise off
4815 // by default.
4816 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4817 options::OPT_fno_aligned_allocation,
4818 options::OPT_faligned_new_EQ)) {
4819 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4820 CmdArgs.push_back("-fno-aligned-allocation");
4821 else
4822 CmdArgs.push_back("-faligned-allocation");
4823 }
4824
4825 // The default new alignment can be specified using a dedicated option or via
4826 // a GCC-compatible option that also turns on aligned allocation.
4827 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4828 options::OPT_faligned_new_EQ))
4829 CmdArgs.push_back(
4830 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4831
4832 // -fconstant-cfstrings is default, and may be subject to argument translation
4833 // on Darwin.
4834 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4835 options::OPT_fno_constant_cfstrings) ||
4836 !Args.hasFlag(options::OPT_mconstant_cfstrings,
4837 options::OPT_mno_constant_cfstrings))
4838 CmdArgs.push_back("-fno-constant-cfstrings");
4839
4840 // -fno-pascal-strings is default, only pass non-default.
4841 if (Args.hasFlag(options::OPT_fpascal_strings,
4842 options::OPT_fno_pascal_strings, false))
4843 CmdArgs.push_back("-fpascal-strings");
4844
4845 // Honor -fpack-struct= and -fpack-struct, if given. Note that
4846 // -fno-pack-struct doesn't apply to -fpack-struct=.
4847 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4848 std::string PackStructStr = "-fpack-struct=";
4849 PackStructStr += A->getValue();
4850 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4851 } else if (Args.hasFlag(options::OPT_fpack_struct,
4852 options::OPT_fno_pack_struct, false)) {
4853 CmdArgs.push_back("-fpack-struct=1");
4854 }
4855
4856 // Handle -fmax-type-align=N and -fno-type-align
4857 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4858 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4859 if (!SkipMaxTypeAlign) {
4860 std::string MaxTypeAlignStr = "-fmax-type-align=";
4861 MaxTypeAlignStr += A->getValue();
4862 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4863 }
4864 } else if (RawTriple.isOSDarwin()) {
4865 if (!SkipMaxTypeAlign) {
4866 std::string MaxTypeAlignStr = "-fmax-type-align=16";
4867 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4868 }
4869 }
4870
4871 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
4872 CmdArgs.push_back("-Qn");
4873
4874 // -fcommon is the default unless compiling kernel code or the target says so
4875 bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4876 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4877 !NoCommonDefault))
4878 CmdArgs.push_back("-fno-common");
4879
4880 // -fsigned-bitfields is default, and clang doesn't yet support
4881 // -funsigned-bitfields.
4882 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4883 options::OPT_funsigned_bitfields))
4884 D.Diag(diag::warn_drv_clang_unsupported)
4885 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4886
4887 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4888 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4889 D.Diag(diag::err_drv_clang_unsupported)
4890 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4891
4892 // -finput_charset=UTF-8 is default. Reject others
4893 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4894 StringRef value = inputCharset->getValue();
4895 if (!value.equals_lower("utf-8"))
4896 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4897 << value;
4898 }
4899
4900 // -fexec_charset=UTF-8 is default. Reject others
4901 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4902 StringRef value = execCharset->getValue();
4903 if (!value.equals_lower("utf-8"))
4904 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4905 << value;
4906 }
4907
4908 RenderDiagnosticsOptions(D, Args, CmdArgs);
4909
4910 // -fno-asm-blocks is default.
4911 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4912 false))
4913 CmdArgs.push_back("-fasm-blocks");
4914
4915 // -fgnu-inline-asm is default.
4916 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4917 options::OPT_fno_gnu_inline_asm, true))
4918 CmdArgs.push_back("-fno-gnu-inline-asm");
4919
4920 // Enable vectorization per default according to the optimization level
4921 // selected. For optimization levels that want vectorization we use the alias
4922 // option to simplify the hasFlag logic.
4923 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4924 OptSpecifier VectorizeAliasOption =
4925 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4926 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4927 options::OPT_fno_vectorize, EnableVec))
4928 CmdArgs.push_back("-vectorize-loops");
4929
4930 // -fslp-vectorize is enabled based on the optimization level selected.
4931 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4932 OptSpecifier SLPVectAliasOption =
4933 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4934 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4935 options::OPT_fno_slp_vectorize, EnableSLPVec))
4936 CmdArgs.push_back("-vectorize-slp");
4937
4938 ParseMPreferVectorWidth(D, Args, CmdArgs);
4939
4940 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4941 A->render(Args, CmdArgs);
4942
4943 if (Arg *A = Args.getLastArg(
4944 options::OPT_fsanitize_undefined_strip_path_components_EQ))
4945 A->render(Args, CmdArgs);
4946
4947 // -fdollars-in-identifiers default varies depending on platform and
4948 // language; only pass if specified.
4949 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4950 options::OPT_fno_dollars_in_identifiers)) {
4951 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4952 CmdArgs.push_back("-fdollars-in-identifiers");
4953 else
4954 CmdArgs.push_back("-fno-dollars-in-identifiers");
4955 }
4956
4957 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4958 // practical purposes.
4959 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4960 options::OPT_fno_unit_at_a_time)) {
4961 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4962 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4963 }
4964
4965 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4966 options::OPT_fno_apple_pragma_pack, false))
4967 CmdArgs.push_back("-fapple-pragma-pack");
4968
4969 if (Args.hasFlag(options::OPT_fsave_optimization_record,
4970 options::OPT_foptimization_record_file_EQ,
4971 options::OPT_fno_save_optimization_record, false)) {
4972 CmdArgs.push_back("-opt-record-file");
4973
4974 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4975 if (A) {
4976 CmdArgs.push_back(A->getValue());
4977 } else {
4978 SmallString<128> F;
4979
4980 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4981 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4982 F = FinalOutput->getValue();
4983 }
4984
4985 if (F.empty()) {
4986 // Use the input filename.
4987 F = llvm::sys::path::stem(Input.getBaseInput());
4988
4989 // If we're compiling for an offload architecture (i.e. a CUDA device),
4990 // we need to make the file name for the device compilation different
4991 // from the host compilation.
4992 if (!JA.isDeviceOffloading(Action::OFK_None) &&
4993 !JA.isDeviceOffloading(Action::OFK_Host)) {
4994 llvm::sys::path::replace_extension(F, "");
4995 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
4996 Triple.normalize());
4997 F += "-";
4998 F += JA.getOffloadingArch();
4999 }
5000 }
5001
5002 llvm::sys::path::replace_extension(F, "opt.yaml");
5003 CmdArgs.push_back(Args.MakeArgString(F));
5004 }
5005 }
5006
5007 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5008 options::OPT_fno_rewrite_imports, false);
5009 if (RewriteImports)
5010 CmdArgs.push_back("-frewrite-imports");
5011
5012 // Enable rewrite includes if the user's asked for it or if we're generating
5013 // diagnostics.
5014 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5015 // nice to enable this when doing a crashdump for modules as well.
5016 if (Args.hasFlag(options::OPT_frewrite_includes,
5017 options::OPT_fno_rewrite_includes, false) ||
5018 (C.isForDiagnostics() && !HaveModules))
5019 CmdArgs.push_back("-frewrite-includes");
5020
5021 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5022 if (Arg *A = Args.getLastArg(options::OPT_traditional,
5023 options::OPT_traditional_cpp)) {
5024 if (isa<PreprocessJobAction>(JA))
5025 CmdArgs.push_back("-traditional-cpp");
5026 else
5027 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5028 }
5029
5030 Args.AddLastArg(CmdArgs, options::OPT_dM);
5031 Args.AddLastArg(CmdArgs, options::OPT_dD);
5032
5033 // Handle serialized diagnostics.
5034 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5035 CmdArgs.push_back("-serialize-diagnostic-file");
5036 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5037 }
5038
5039 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5040 CmdArgs.push_back("-fretain-comments-from-system-headers");
5041
5042 // Forward -fcomment-block-commands to -cc1.
5043 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5044 // Forward -fparse-all-comments to -cc1.
5045 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5046
5047 // Turn -fplugin=name.so into -load name.so
5048 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5049 CmdArgs.push_back("-load");
5050 CmdArgs.push_back(A->getValue());
5051 A->claim();
5052 }
5053
5054 // Setup statistics file output.
5055 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5056 if (!StatsFile.empty())
5057 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5058
5059 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5060 // parser.
5061 // -finclude-default-header flag is for preprocessor,
5062 // do not pass it to other cc1 commands when save-temps is enabled
5063 if (C.getDriver().isSaveTempsEnabled() &&
5064 !isa<PreprocessJobAction>(JA)) {
5065 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5066 Arg->claim();
5067 if (StringRef(Arg->getValue()) != "-finclude-default-header")
5068 CmdArgs.push_back(Arg->getValue());
5069 }
5070 }
5071 else {
5072 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5073 }
5074 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5075 A->claim();
5076
5077 // We translate this by hand to the -cc1 argument, since nightly test uses
5078 // it and developers have been trained to spell it with -mllvm. Both
5079 // spellings are now deprecated and should be removed.
5080 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5081 CmdArgs.push_back("-disable-llvm-optzns");
5082 } else {
5083 A->render(Args, CmdArgs);
5084 }
5085 }
5086
5087 // With -save-temps, we want to save the unoptimized bitcode output from the
5088 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5089 // by the frontend.
5090 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5091 // has slightly different breakdown between stages.
5092 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5093 // pristine IR generated by the frontend. Ideally, a new compile action should
5094 // be added so both IR can be captured.
5095 if (C.getDriver().isSaveTempsEnabled() &&
5096 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5097 isa<CompileJobAction>(JA))
5098 CmdArgs.push_back("-disable-llvm-passes");
5099
5100 if (Output.getType() == types::TY_Dependencies) {
5101 // Handled with other dependency code.
5102 } else if (Output.isFilename()) {
5103 CmdArgs.push_back("-o");
5104 CmdArgs.push_back(Output.getFilename());
5105 } else {
5106 assert(Output.isNothing() && "Invalid output.")((Output.isNothing() && "Invalid output.") ? static_cast
<void> (0) : __assert_fail ("Output.isNothing() && \"Invalid output.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5106, __PRETTY_FUNCTION__))
;
5107 }
5108
5109 addDashXForInput(Args, Input, CmdArgs);
5110
5111 ArrayRef<InputInfo> FrontendInputs = Input;
5112 if (IsHeaderModulePrecompile)
5113 FrontendInputs = ModuleHeaderInputs;
5114 else if (Input.isNothing())
5115 FrontendInputs = {};
5116
5117 for (const InputInfo &Input : FrontendInputs) {
5118 if (Input.isFilename())
5119 CmdArgs.push_back(Input.getFilename());
5120 else
5121 Input.getInputArg().renderAsInput(Args, CmdArgs);
5122 }
5123
5124 Args.AddAllArgs(CmdArgs, options::OPT_undef);
5125
5126 const char *Exec = D.getClangProgramPath();
5127
5128 // Optionally embed the -cc1 level arguments into the debug info or a
5129 // section, for build analysis.
5130 // Also record command line arguments into the debug info if
5131 // -grecord-gcc-switches options is set on.
5132 // By default, -gno-record-gcc-switches is set on and no recording.
5133 auto GRecordSwitches =
5134 Args.hasFlag(options::OPT_grecord_command_line,
5135 options::OPT_gno_record_command_line, false);
5136 auto FRecordSwitches =
5137 Args.hasFlag(options::OPT_frecord_command_line,
5138 options::OPT_fno_record_command_line, false);
5139 if (FRecordSwitches && !Triple.isOSBinFormatELF())
5140 D.Diag(diag::err_drv_unsupported_opt_for_target)
5141 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5142 << TripleStr;
5143 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5144 ArgStringList OriginalArgs;
5145 for (const auto &Arg : Args)
5146 Arg->render(Args, OriginalArgs);
5147
5148 SmallString<256> Flags;
5149 Flags += Exec;
5150 for (const char *OriginalArg : OriginalArgs) {
5151 SmallString<128> EscapedArg;
5152 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5153 Flags += " ";
5154 Flags += EscapedArg;
5155 }
5156 auto FlagsArgString = Args.MakeArgString(Flags);
5157 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5158 CmdArgs.push_back("-dwarf-debug-flags");
5159 CmdArgs.push_back(FlagsArgString);
5160 }
5161 if (FRecordSwitches) {
5162 CmdArgs.push_back("-record-command-line");
5163 CmdArgs.push_back(FlagsArgString);
5164 }
5165 }
5166
5167 // Host-side cuda compilation receives all device-side outputs in a single
5168 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
5169 if ((IsCuda || IsHIP) && CudaDeviceInput) {
5170 CmdArgs.push_back("-fcuda-include-gpubinary");
5171 CmdArgs.push_back(CudaDeviceInput->getFilename());
5172 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
5173 CmdArgs.push_back("-fgpu-rdc");
5174 }
5175
5176 if (IsCuda) {
5177 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
5178 options::OPT_fno_cuda_short_ptr, false))
5179 CmdArgs.push_back("-fcuda-short-ptr");
5180 }
5181
5182 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
5183 // to specify the result of the compile phase on the host, so the meaningful
5184 // device declarations can be identified. Also, -fopenmp-is-device is passed
5185 // along to tell the frontend that it is generating code for a device, so that
5186 // only the relevant declarations are emitted.
5187 if (IsOpenMPDevice) {
5188 CmdArgs.push_back("-fopenmp-is-device");
5189 if (OpenMPDeviceInput) {
5190 CmdArgs.push_back("-fopenmp-host-ir-file-path");
5191 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
5192 }
5193 }
5194
5195 // For all the host OpenMP offloading compile jobs we need to pass the targets
5196 // information using -fopenmp-targets= option.
5197 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
5198 SmallString<128> TargetInfo("-fopenmp-targets=");
5199
5200 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
5201 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5202, __PRETTY_FUNCTION__))
5202 "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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5202, __PRETTY_FUNCTION__))
;
5203 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
5204 if (i)
5205 TargetInfo += ',';
5206 // We need to get the string from the triple because it may be not exactly
5207 // the same as the one we get directly from the arguments.
5208 llvm::Triple T(Tgts->getValue(i));
5209 TargetInfo += T.getTriple();
5210 }
5211 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
5212 }
5213
5214 bool WholeProgramVTables =
5215 Args.hasFlag(options::OPT_fwhole_program_vtables,
5216 options::OPT_fno_whole_program_vtables, false);
5217 if (WholeProgramVTables) {
5218 if (!D.isUsingLTO())
5219 D.Diag(diag::err_drv_argument_only_allowed_with)
5220 << "-fwhole-program-vtables"
5221 << "-flto";
5222 CmdArgs.push_back("-fwhole-program-vtables");
5223 }
5224
5225 if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
5226 options::OPT_fno_experimental_isel)) {
5227 CmdArgs.push_back("-mllvm");
5228 if (A->getOption().matches(options::OPT_fexperimental_isel)) {
5229 CmdArgs.push_back("-global-isel=1");
5230
5231 // GISel is on by default on AArch64 -O0, so don't bother adding
5232 // the fallback remarks for it. Other combinations will add a warning of
5233 // some kind.
5234 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
5235 bool IsOptLevelSupported = false;
5236
5237 Arg *A = Args.getLastArg(options::OPT_O_Group);
5238 if (Triple.getArch() == llvm::Triple::aarch64) {
5239 if (!A || A->getOption().matches(options::OPT_O0))
5240 IsOptLevelSupported = true;
5241 }
5242 if (!IsArchSupported || !IsOptLevelSupported) {
5243 CmdArgs.push_back("-mllvm");
5244 CmdArgs.push_back("-global-isel-abort=2");
5245
5246 if (!IsArchSupported)
5247 D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
5248 else
5249 D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
5250 }
5251 } else {
5252 CmdArgs.push_back("-global-isel=0");
5253 }
5254 }
5255
5256 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
5257 options::OPT_fno_force_enable_int128)) {
5258 if (A->getOption().matches(options::OPT_fforce_enable_int128))
5259 CmdArgs.push_back("-fforce-enable-int128");
5260 }
5261
5262 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
5263 options::OPT_fno_complete_member_pointers, false))
5264 CmdArgs.push_back("-fcomplete-member-pointers");
5265
5266 if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
5267 options::OPT_fno_cxx_static_destructors, true))
5268 CmdArgs.push_back("-fno-c++-static-destructors");
5269
5270 if (Arg *A = Args.getLastArg(options::OPT_moutline,
5271 options::OPT_mno_outline)) {
5272 if (A->getOption().matches(options::OPT_moutline)) {
5273 // We only support -moutline in AArch64 right now. If we're not compiling
5274 // for AArch64, emit a warning and ignore the flag. Otherwise, add the
5275 // proper mllvm flags.
5276 if (Triple.getArch() != llvm::Triple::aarch64) {
5277 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
5278 } else {
5279 CmdArgs.push_back("-mllvm");
5280 CmdArgs.push_back("-enable-machine-outliner");
5281 }
5282 } else {
5283 // Disable all outlining behaviour.
5284 CmdArgs.push_back("-mllvm");
5285 CmdArgs.push_back("-enable-machine-outliner=never");
5286 }
5287 }
5288
5289 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
5290 (TC.getTriple().isOSBinFormatELF() ||
5291 TC.getTriple().isOSBinFormatCOFF()) &&
5292 !TC.getTriple().isPS4() &&
5293 !TC.getTriple().isOSNetBSD() &&
5294 !Distro(D.getVFS()).IsGentoo() &&
5295 TC.useIntegratedAs()))
5296 CmdArgs.push_back("-faddrsig");
5297
5298 // Finally add the compile command to the compilation.
5299 if (Args.hasArg(options::OPT__SLASH_fallback) &&
5300 Output.getType() == types::TY_Object &&
5301 (InputType == types::TY_C || InputType == types::TY_CXX)) {
5302 auto CLCommand =
5303 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
5304 C.addCommand(llvm::make_unique<FallbackCommand>(
5305 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
5306 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
5307 isa<PrecompileJobAction>(JA)) {
5308 // In /fallback builds, run the main compilation even if the pch generation
5309 // fails, so that the main compilation's fallback to cl.exe runs.
5310 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
5311 CmdArgs, Inputs));
5312 } else {
5313 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5314 }
5315
5316 // Make the compile command echo its inputs for /showFilenames.
5317 if (Output.getType() == types::TY_Object &&
5318 Args.hasFlag(options::OPT__SLASH_showFilenames,
5319 options::OPT__SLASH_showFilenames_, false)) {
5320 C.getJobs().getJobs().back()->setPrintInputFilenames(true);
5321 }
5322
5323 if (Arg *A = Args.getLastArg(options::OPT_pg))
5324 if (!shouldUseFramePointer(Args, Triple))
5325 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
5326 << A->getAsString(Args);
5327
5328 // Claim some arguments which clang supports automatically.
5329
5330 // -fpch-preprocess is used with gcc to add a special marker in the output to
5331 // include the PCH file.
5332 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
5333
5334 // Claim some arguments which clang doesn't support, but we don't
5335 // care to warn the user about.
5336 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
5337 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
5338
5339 // Disable warnings for clang -E -emit-llvm foo.c
5340 Args.ClaimAllArgs(options::OPT_emit_llvm);
5341}
5342
5343Clang::Clang(const ToolChain &TC)
5344 // CAUTION! The first constructor argument ("clang") is not arbitrary,
5345 // as it is for other tools. Some operations on a Tool actually test
5346 // whether that tool is Clang based on the Tool's Name as a string.
5347 : Tool("clang", "clang frontend", TC, RF_Full) {}
5348
5349Clang::~Clang() {}
5350
5351/// Add options related to the Objective-C runtime/ABI.
5352///
5353/// Returns true if the runtime is non-fragile.
5354ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
5355 ArgStringList &cmdArgs,
5356 RewriteKind rewriteKind) const {
5357 // Look for the controlling runtime option.
5358 Arg *runtimeArg =
5359 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
5360 options::OPT_fobjc_runtime_EQ);
5361
5362 // Just forward -fobjc-runtime= to the frontend. This supercedes
5363 // options about fragility.
5364 if (runtimeArg &&
5365 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
5366 ObjCRuntime runtime;
5367 StringRef value = runtimeArg->getValue();
5368 if (runtime.tryParse(value)) {
5369 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
5370 << value;
5371 }
5372 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
5373 (runtime.getVersion() >= VersionTuple(2, 0)))
5374 if (!getToolChain().getTriple().isOSBinFormatELF() &&
5375 !getToolChain().getTriple().isOSBinFormatCOFF()) {
5376 getToolChain().getDriver().Diag(
5377 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
5378 << runtime.getVersion().getMajor();
5379 }
5380
5381 runtimeArg->render(args, cmdArgs);
5382 return runtime;
5383 }
5384
5385 // Otherwise, we'll need the ABI "version". Version numbers are
5386 // slightly confusing for historical reasons:
5387 // 1 - Traditional "fragile" ABI
5388 // 2 - Non-fragile ABI, version 1
5389 // 3 - Non-fragile ABI, version 2
5390 unsigned objcABIVersion = 1;
5391 // If -fobjc-abi-version= is present, use that to set the version.
5392 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
5393 StringRef value = abiArg->getValue();
5394 if (value == "1")
5395 objcABIVersion = 1;
5396 else if (value == "2")
5397 objcABIVersion = 2;
5398 else if (value == "3")
5399 objcABIVersion = 3;
5400 else
5401 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
5402 } else {
5403 // Otherwise, determine if we are using the non-fragile ABI.
5404 bool nonFragileABIIsDefault =
5405 (rewriteKind == RK_NonFragile ||
5406 (rewriteKind == RK_None &&
5407 getToolChain().IsObjCNonFragileABIDefault()));
5408 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
5409 options::OPT_fno_objc_nonfragile_abi,
5410 nonFragileABIIsDefault)) {
5411// Determine the non-fragile ABI version to use.
5412#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
5413 unsigned nonFragileABIVersion = 1;
5414#else
5415 unsigned nonFragileABIVersion = 2;
5416#endif
5417
5418 if (Arg *abiArg =
5419 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
5420 StringRef value = abiArg->getValue();
5421 if (value == "1")
5422 nonFragileABIVersion = 1;
5423 else if (value == "2")
5424 nonFragileABIVersion = 2;
5425 else
5426 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
5427 << value;
5428 }
5429
5430 objcABIVersion = 1 + nonFragileABIVersion;
5431 } else {
5432 objcABIVersion = 1;
5433 }
5434 }
5435
5436 // We don't actually care about the ABI version other than whether
5437 // it's non-fragile.
5438 bool isNonFragile = objcABIVersion != 1;
5439
5440 // If we have no runtime argument, ask the toolchain for its default runtime.
5441 // However, the rewriter only really supports the Mac runtime, so assume that.
5442 ObjCRuntime runtime;
5443 if (!runtimeArg) {
5444 switch (rewriteKind) {
5445 case RK_None:
5446 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5447 break;
5448 case RK_Fragile:
5449 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
5450 break;
5451 case RK_NonFragile:
5452 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5453 break;
5454 }
5455
5456 // -fnext-runtime
5457 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
5458 // On Darwin, make this use the default behavior for the toolchain.
5459 if (getToolChain().getTriple().isOSDarwin()) {
5460 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5461
5462 // Otherwise, build for a generic macosx port.
5463 } else {
5464 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5465 }
5466
5467 // -fgnu-runtime
5468 } else {
5469 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5469, __PRETTY_FUNCTION__))
;
5470 // Legacy behaviour is to target the gnustep runtime if we are in
5471 // non-fragile mode or the GCC runtime in fragile mode.
5472 if (isNonFragile)
5473 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
5474 else
5475 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
5476 }
5477
5478 cmdArgs.push_back(
5479 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
5480 return runtime;
5481}
5482
5483static bool maybeConsumeDash(const std::string &EH, size_t &I) {
5484 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
5485 I += HaveDash;
5486 return !HaveDash;
5487}
5488
5489namespace {
5490struct EHFlags {
5491 bool Synch = false;
5492 bool Asynch = false;
5493 bool NoUnwindC = false;
5494};
5495} // end anonymous namespace
5496
5497/// /EH controls whether to run destructor cleanups when exceptions are
5498/// thrown. There are three modifiers:
5499/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
5500/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
5501/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
5502/// - c: Assume that extern "C" functions are implicitly nounwind.
5503/// The default is /EHs-c-, meaning cleanups are disabled.
5504static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
5505 EHFlags EH;
5506
5507 std::vector<std::string> EHArgs =
5508 Args.getAllArgValues(options::OPT__SLASH_EH);
5509 for (auto EHVal : EHArgs) {
5510 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5511 switch (EHVal[I]) {
5512 case 'a':
5513 EH.Asynch = maybeConsumeDash(EHVal, I);
5514 if (EH.Asynch)
5515 EH.Synch = false;
5516 continue;
5517 case 'c':
5518 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5519 continue;
5520 case 's':
5521 EH.Synch = maybeConsumeDash(EHVal, I);
5522 if (EH.Synch)
5523 EH.Asynch = false;
5524 continue;
5525 default:
5526 break;
5527 }
5528 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5529 break;
5530 }
5531 }
5532 // The /GX, /GX- flags are only processed if there are not /EH flags.
5533 // The default is that /GX is not specified.
5534 if (EHArgs.empty() &&
5535 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5536 /*default=*/false)) {
5537 EH.Synch = true;
5538 EH.NoUnwindC = true;
5539 }
5540
5541 return EH;
5542}
5543
5544void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5545 ArgStringList &CmdArgs,
5546 codegenoptions::DebugInfoKind *DebugInfoKind,
5547 bool *EmitCodeView) const {
5548 unsigned RTOptionID = options::OPT__SLASH_MT;
5549
5550 if (Args.hasArg(options::OPT__SLASH_LDd))
5551 // The /LDd option implies /MTd. The dependent lib part can be overridden,
5552 // but defining _DEBUG is sticky.
5553 RTOptionID = options::OPT__SLASH_MTd;
5554
5555 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5556 RTOptionID = A->getOption().getID();
5557
5558 StringRef FlagForCRT;
5559 switch (RTOptionID) {
5560 case options::OPT__SLASH_MD:
5561 if (Args.hasArg(options::OPT__SLASH_LDd))
5562 CmdArgs.push_back("-D_DEBUG");
5563 CmdArgs.push_back("-D_MT");
5564 CmdArgs.push_back("-D_DLL");
5565 FlagForCRT = "--dependent-lib=msvcrt";
5566 break;
5567 case options::OPT__SLASH_MDd:
5568 CmdArgs.push_back("-D_DEBUG");
5569 CmdArgs.push_back("-D_MT");
5570 CmdArgs.push_back("-D_DLL");
5571 FlagForCRT = "--dependent-lib=msvcrtd";
5572 break;
5573 case options::OPT__SLASH_MT:
5574 if (Args.hasArg(options::OPT__SLASH_LDd))
5575 CmdArgs.push_back("-D_DEBUG");
5576 CmdArgs.push_back("-D_MT");
5577 CmdArgs.push_back("-flto-visibility-public-std");
5578 FlagForCRT = "--dependent-lib=libcmt";
5579 break;
5580 case options::OPT__SLASH_MTd:
5581 CmdArgs.push_back("-D_DEBUG");
5582 CmdArgs.push_back("-D_MT");
5583 CmdArgs.push_back("-flto-visibility-public-std");
5584 FlagForCRT = "--dependent-lib=libcmtd";
5585 break;
5586 default:
5587 llvm_unreachable("Unexpected option ID.")::llvm::llvm_unreachable_internal("Unexpected option ID.", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5587)
;
5588 }
5589
5590 if (Args.hasArg(options::OPT__SLASH_Zl)) {
5591 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5592 } else {
5593 CmdArgs.push_back(FlagForCRT.data());
5594
5595 // This provides POSIX compatibility (maps 'open' to '_open'), which most
5596 // users want. The /Za flag to cl.exe turns this off, but it's not
5597 // implemented in clang.
5598 CmdArgs.push_back("--dependent-lib=oldnames");
5599 }
5600
5601 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
5602 A->render(Args, CmdArgs);
5603
5604 // This controls whether or not we emit RTTI data for polymorphic types.
5605 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5606 /*default=*/false))
5607 CmdArgs.push_back("-fno-rtti-data");
5608
5609 // This controls whether or not we emit stack-protector instrumentation.
5610 // In MSVC, Buffer Security Check (/GS) is on by default.
5611 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5612 /*default=*/true)) {
5613 CmdArgs.push_back("-stack-protector");
5614 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5615 }
5616
5617 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5618 if (Arg *DebugInfoArg =
5619 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5620 options::OPT_gline_tables_only)) {
5621 *EmitCodeView = true;
5622 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5623 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5624 else
5625 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5626 } else {
5627 *EmitCodeView = false;
5628 }
5629
5630 const Driver &D = getToolChain().getDriver();
5631 EHFlags EH = parseClangCLEHFlags(D, Args);
5632 if (EH.Synch || EH.Asynch) {
5633 if (types::isCXX(InputType))
5634 CmdArgs.push_back("-fcxx-exceptions");
5635 CmdArgs.push_back("-fexceptions");
5636 }
5637 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5638 CmdArgs.push_back("-fexternc-nounwind");
5639
5640 // /EP should expand to -E -P.
5641 if (Args.hasArg(options::OPT__SLASH_EP)) {
5642 CmdArgs.push_back("-E");
5643 CmdArgs.push_back("-P");
5644 }
5645
5646 unsigned VolatileOptionID;
5647 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5648 getToolChain().getArch() == llvm::Triple::x86)
5649 VolatileOptionID = options::OPT__SLASH_volatile_ms;
5650 else
5651 VolatileOptionID = options::OPT__SLASH_volatile_iso;
5652
5653 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5654 VolatileOptionID = A->getOption().getID();
5655
5656 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5657 CmdArgs.push_back("-fms-volatile");
5658
5659 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
5660 options::OPT__SLASH_Zc_dllexportInlines,
5661 false)) {
5662 if (Args.hasArg(options::OPT__SLASH_fallback)) {
5663 D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
5664 } else {
5665 CmdArgs.push_back("-fno-dllexport-inlines");
5666 }
5667 }
5668
5669 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5670 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5671 if (MostGeneralArg && BestCaseArg)
5672 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5673 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5674
5675 if (MostGeneralArg) {
5676 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5677 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5678 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5679
5680 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5681 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5682 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5683 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5684 << FirstConflict->getAsString(Args)
5685 << SecondConflict->getAsString(Args);
5686
5687 if (SingleArg)
5688 CmdArgs.push_back("-fms-memptr-rep=single");
5689 else if (MultipleArg)
5690 CmdArgs.push_back("-fms-memptr-rep=multiple");
5691 else
5692 CmdArgs.push_back("-fms-memptr-rep=virtual");
5693 }
5694
5695 // Parse the default calling convention options.
5696 if (Arg *CCArg =
5697 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5698 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5699 options::OPT__SLASH_Gregcall)) {
5700 unsigned DCCOptId = CCArg->getOption().getID();
5701 const char *DCCFlag = nullptr;
5702 bool ArchSupported = true;
5703 llvm::Triple::ArchType Arch = getToolChain().getArch();
5704 switch (DCCOptId) {
5705 case options::OPT__SLASH_Gd:
5706 DCCFlag = "-fdefault-calling-conv=cdecl";
5707 break;
5708 case options::OPT__SLASH_Gr:
5709 ArchSupported = Arch == llvm::Triple::x86;
5710 DCCFlag = "-fdefault-calling-conv=fastcall";
5711 break;
5712 case options::OPT__SLASH_Gz:
5713 ArchSupported = Arch == llvm::Triple::x86;
5714 DCCFlag = "-fdefault-calling-conv=stdcall";
5715 break;
5716 case options::OPT__SLASH_Gv:
5717 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5718 DCCFlag = "-fdefault-calling-conv=vectorcall";
5719 break;
5720 case options::OPT__SLASH_Gregcall:
5721 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5722 DCCFlag = "-fdefault-calling-conv=regcall";
5723 break;
5724 }
5725
5726 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5727 if (ArchSupported && DCCFlag)
5728 CmdArgs.push_back(DCCFlag);
5729 }
5730
5731 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5732 A->render(Args, CmdArgs);
5733
5734 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5735 CmdArgs.push_back("-fdiagnostics-format");
5736 if (Args.hasArg(options::OPT__SLASH_fallback))
5737 CmdArgs.push_back("msvc-fallback");
5738 else
5739 CmdArgs.push_back("msvc");
5740 }
5741
5742 if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
5743 SmallVector<StringRef, 1> SplitArgs;
5744 StringRef(A->getValue()).split(SplitArgs, ",");
5745 bool Instrument = false;
5746 bool NoChecks = false;
5747 for (StringRef Arg : SplitArgs) {
5748 if (Arg.equals_lower("cf"))
5749 Instrument = true;
5750 else if (Arg.equals_lower("cf-"))
5751 Instrument = false;
5752 else if (Arg.equals_lower("nochecks"))
5753 NoChecks = true;
5754 else if (Arg.equals_lower("nochecks-"))
5755 NoChecks = false;
5756 else
5757 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << Arg;
5758 }
5759 // Currently there's no support emitting CFG instrumentation; the flag only
5760 // emits the table of address-taken functions.
5761 if (Instrument || NoChecks)
5762 CmdArgs.push_back("-cfguard");
5763 }
5764}
5765
5766visualstudio::Compiler *Clang::getCLFallback() const {
5767 if (!CLFallback)
5768 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5769 return CLFallback.get();
5770}
5771
5772
5773const char *Clang::getBaseInputName(const ArgList &Args,
5774 const InputInfo &Input) {
5775 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5776}
5777
5778const char *Clang::getBaseInputStem(const ArgList &Args,
5779 const InputInfoList &Inputs) {
5780 const char *Str = getBaseInputName(Args, Inputs[0]);
5781
5782 if (const char *End = strrchr(Str, '.'))
5783 return Args.MakeArgString(std::string(Str, End));
5784
5785 return Str;
5786}
5787
5788const char *Clang::getDependencyFileName(const ArgList &Args,
5789 const InputInfoList &Inputs) {
5790 // FIXME: Think about this more.
5791 std::string Res;
5792
5793 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5794 std::string Str(OutputOpt->getValue());
5795 Res = Str.substr(0, Str.rfind('.'));
5796 } else {
5797 Res = getBaseInputStem(Args, Inputs);
5798 }
5799 return Args.MakeArgString(Res + ".d");
5800}
5801
5802// Begin ClangAs
5803
5804void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5805 ArgStringList &CmdArgs) const {
5806 StringRef CPUName;
5807 StringRef ABIName;
5808 const llvm::Triple &Triple = getToolChain().getTriple();
5809 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5810
5811 CmdArgs.push_back("-target-abi");
5812 CmdArgs.push_back(ABIName.data());
5813}
5814
5815void ClangAs::AddX86TargetArgs(const ArgList &Args,
5816 ArgStringList &CmdArgs) const {
5817 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5818 StringRef Value = A->getValue();
5819 if (Value == "intel" || Value == "att") {
5820 CmdArgs.push_back("-mllvm");
5821 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5822 } else {
5823 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5824 << A->getOption().getName() << Value;
5825 }
5826 }
5827}
5828
5829void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
5830 const InputInfo &Output, const InputInfoList &Inputs,
5831 const ArgList &Args,
5832 const char *LinkingOutput) const {
5833 ArgStringList CmdArgs;
5834
5835 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5835, __PRETTY_FUNCTION__))
;
5836 const InputInfo &Input = Inputs[0];
5837
5838 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5839 const std::string &TripleStr = Triple.getTriple();
5840 const auto &D = getToolChain().getDriver();
5841
5842 // Don't warn about "clang -w -c foo.s"
5843 Args.ClaimAllArgs(options::OPT_w);
5844 // and "clang -emit-llvm -c foo.s"
5845 Args.ClaimAllArgs(options::OPT_emit_llvm);
5846
5847 claimNoWarnArgs(Args);
5848
5849 // Invoke ourselves in -cc1as mode.
5850 //
5851 // FIXME: Implement custom jobs for internal actions.
5852 CmdArgs.push_back("-cc1as");
5853
5854 // Add the "effective" target triple.
5855 CmdArgs.push_back("-triple");
5856 CmdArgs.push_back(Args.MakeArgString(TripleStr));
5857
5858 // Set the output mode, we currently only expect to be used as a real
5859 // assembler.
5860 CmdArgs.push_back("-filetype");
5861 CmdArgs.push_back("obj");
5862
5863 // Set the main file name, so that debug info works even with
5864 // -save-temps or preprocessed assembly.
5865 CmdArgs.push_back("-main-file-name");
5866 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5867
5868 // Add the target cpu
5869 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5870 if (!CPU.empty()) {
5871 CmdArgs.push_back("-target-cpu");
5872 CmdArgs.push_back(Args.MakeArgString(CPU));
5873 }
5874
5875 // Add the target features
5876 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5877
5878 // Ignore explicit -force_cpusubtype_ALL option.
5879 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5880
5881 // Pass along any -I options so we get proper .include search paths.
5882 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5883
5884 // Determine the original source input.
5885 const Action *SourceAction = &JA;
5886 while (SourceAction->getKind() != Action::InputClass) {
5887 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5887, __PRETTY_FUNCTION__))
;
5888 SourceAction = SourceAction->getInputs()[0];
5889 }
5890
5891 // Forward -g and handle debug info related flags, assuming we are dealing
5892 // with an actual assembly file.
5893 bool WantDebug = false;
5894 unsigned DwarfVersion = 0;
5895 Args.ClaimAllArgs(options::OPT_g_Group);
5896 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5897 WantDebug = !A->getOption().matches(options::OPT_g0) &&
5898 !A->getOption().matches(options::OPT_ggdb0);
5899 if (WantDebug)
5900 DwarfVersion = DwarfVersionNum(A->getSpelling());
5901 }
5902 if (DwarfVersion == 0)
5903 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5904
5905 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
5906
5907 if (SourceAction->getType() == types::TY_Asm ||
5908 SourceAction->getType() == types::TY_PP_Asm) {
5909 // You might think that it would be ok to set DebugInfoKind outside of
5910 // the guard for source type, however there is a test which asserts
5911 // that some assembler invocation receives no -debug-info-kind,
5912 // and it's not clear whether that test is just overly restrictive.
5913 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5914 : codegenoptions::NoDebugInfo);
5915 // Add the -fdebug-compilation-dir flag if needed.
5916 addDebugCompDirArg(Args, CmdArgs);
5917
5918 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
5919
5920 // Set the AT_producer to the clang version when using the integrated
5921 // assembler on assembly source files.
5922 CmdArgs.push_back("-dwarf-debug-producer");
5923 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5924
5925 // And pass along -I options
5926 Args.AddAllArgs(CmdArgs, options::OPT_I);
5927 }
5928 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5929 llvm::DebuggerKind::Default);
5930 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
5931
5932
5933 // Handle -fPIC et al -- the relocation-model affects the assembler
5934 // for some targets.
5935 llvm::Reloc::Model RelocationModel;
5936 unsigned PICLevel;
5937 bool IsPIE;
5938 std::tie(RelocationModel, PICLevel, IsPIE) =
5939 ParsePICArgs(getToolChain(), Args);
5940
5941 const char *RMName = RelocationModelName(RelocationModel);
5942 if (RMName) {
5943 CmdArgs.push_back("-mrelocation-model");
5944 CmdArgs.push_back(RMName);
5945 }
5946
5947 // Optionally embed the -cc1as level arguments into the debug info, for build
5948 // analysis.
5949 if (getToolChain().UseDwarfDebugFlags()) {
5950 ArgStringList OriginalArgs;
5951 for (const auto &Arg : Args)
5952 Arg->render(Args, OriginalArgs);
5953
5954 SmallString<256> Flags;
5955 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5956 Flags += Exec;
5957 for (const char *OriginalArg : OriginalArgs) {
5958 SmallString<128> EscapedArg;
5959 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5960 Flags += " ";
5961 Flags += EscapedArg;
5962 }
5963 CmdArgs.push_back("-dwarf-debug-flags");
5964 CmdArgs.push_back(Args.MakeArgString(Flags));
5965 }
5966
5967 // FIXME: Add -static support, once we have it.
5968
5969 // Add target specific flags.
5970 switch (getToolChain().getArch()) {
5971 default:
5972 break;
5973
5974 case llvm::Triple::mips:
5975 case llvm::Triple::mipsel:
5976 case llvm::Triple::mips64:
5977 case llvm::Triple::mips64el:
5978 AddMIPSTargetArgs(Args, CmdArgs);
5979 break;
5980
5981 case llvm::Triple::x86:
5982 case llvm::Triple::x86_64:
5983 AddX86TargetArgs(Args, CmdArgs);
5984 break;
5985
5986 case llvm::Triple::arm:
5987 case llvm::Triple::armeb:
5988 case llvm::Triple::thumb:
5989 case llvm::Triple::thumbeb:
5990 // This isn't in AddARMTargetArgs because we want to do this for assembly
5991 // only, not C/C++.
5992 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5993 options::OPT_mno_default_build_attributes, true)) {
5994 CmdArgs.push_back("-mllvm");
5995 CmdArgs.push_back("-arm-add-build-attributes");
5996 }
5997 break;
5998 }
5999
6000 // Consume all the warning flags. Usually this would be handled more
6001 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6002 // doesn't handle that so rather than warning about unused flags that are
6003 // actually used, we'll lie by omission instead.
6004 // FIXME: Stop lying and consume only the appropriate driver flags
6005 Args.ClaimAllArgs(options::OPT_W_Group);
6006
6007 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6008 getToolChain().getDriver());
6009
6010 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6011
6012 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6012, __PRETTY_FUNCTION__))
;
6013 CmdArgs.push_back("-o");
6014 CmdArgs.push_back(Output.getFilename());
6015
6016 const llvm::Triple &T = getToolChain().getTriple();
6017 Arg *A;
6018 if ((getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split) &&
6019 (T.isOSLinux() || T.isOSFuchsia())) {
6020 CmdArgs.push_back("-split-dwarf-file");
6021 CmdArgs.push_back(SplitDebugName(Args, Output));
6022 }
6023
6024 assert(Input.isFilename() && "Invalid input.")((Input.isFilename() && "Invalid input.") ? static_cast
<void> (0) : __assert_fail ("Input.isFilename() && \"Invalid input.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6024, __PRETTY_FUNCTION__))
;
6025 CmdArgs.push_back(Input.getFilename());
6026
6027 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6028 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
6029}
6030
6031// Begin OffloadBundler
6032
6033void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
6034 const InputInfo &Output,
6035 const InputInfoList &Inputs,
6036 const llvm::opt::ArgList &TCArgs,
6037 const char *LinkingOutput) const {
6038 // The version with only one output is expected to refer to a bundling job.
6039 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6039, __PRETTY_FUNCTION__))
;
6040
6041 // The bundling command looks like this:
6042 // clang-offload-bundler -type=bc
6043 // -targets=host-triple,openmp-triple1,openmp-triple2
6044 // -outputs=input_file
6045 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6046
6047 ArgStringList CmdArgs;
6048
6049 // Get the type.
6050 CmdArgs.push_back(TCArgs.MakeArgString(
6051 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
6052
6053 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6054, __PRETTY_FUNCTION__))
6054 "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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6054, __PRETTY_FUNCTION__))
;
6055
6056 // Get the targets.
6057 SmallString<128> Triples;
6058 Triples += "-targets=";
6059 for (unsigned I = 0; I < Inputs.size(); ++I) {
6060 if (I)
6061 Triples += ',';
6062
6063 // Find ToolChain for this input.
6064 Action::OffloadKind CurKind = Action::OFK_Host;
6065 const ToolChain *CurTC = &getToolChain();
6066 const Action *CurDep = JA.getInputs()[I];
6067
6068 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
6069 CurTC = nullptr;
6070 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
6071 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6071, __PRETTY_FUNCTION__))
;
6072 CurKind = A->getOffloadingDeviceKind();
6073 CurTC = TC;
6074 });
6075 }
6076 Triples += Action::GetOffloadKindName(CurKind);
6077 Triples += '-';
6078 Triples += CurTC->getTriple().normalize();
6079 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
6080 Triples += '-';
6081 Triples += CurDep->getOffloadingArch();
6082 }
6083 }
6084 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6085
6086 // Get bundled file command.
6087 CmdArgs.push_back(
6088 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
6089
6090 // Get unbundled files command.
6091 SmallString<128> UB;
6092 UB += "-inputs=";
6093 for (unsigned I = 0; I < Inputs.size(); ++I) {
6094 if (I)
6095 UB += ',';
6096
6097 // Find ToolChain for this input.
6098 const ToolChain *CurTC = &getToolChain();
6099 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
6100 CurTC = nullptr;
6101 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
6102 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-8~svn350071/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 6102, __PRETTY_FUNCTION__))
;
6103 CurTC = TC;
6104 });
6105 }
6106 UB += CurTC->getInputFilename(Inputs[I]);
6107 }
6108 CmdArgs.push_back(TCArgs.MakeArgString(UB));
6109
6110