Bug Summary

File:tools/clang/lib/Driver/ToolChains/Clang.cpp
Warning:line 3101, column 5
Value stored to 'IsWindowsGNU' 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-eagerly-assume -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 -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-7/lib/clang/7.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-7~svn325118/build-llvm/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-7~svn325118/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn325118/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn325118/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn325118/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/backward -internal-isystem /usr/include/clang/7.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-7/lib/clang/7.0.0/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-7~svn325118/build-llvm/tools/clang/lib/Driver -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-02-14-150435-17243-1 -x c++ /build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp
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/Config/config.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/Option/ArgList.h"
35#include "llvm/Support/CodeGen.h"
36#include "llvm/Support/Compression.h"
37#include "llvm/Support/FileSystem.h"
38#include "llvm/Support/Path.h"
39#include "llvm/Support/Process.h"
40#include "llvm/Support/TargetParser.h"
41#include "llvm/Support/YAMLParser.h"
42
43#ifdef LLVM_ON_UNIX1
44#include <unistd.h> // For getuid().
45#endif
46
47using namespace clang::driver;
48using namespace clang::driver::tools;
49using namespace clang;
50using namespace llvm::opt;
51
52static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
53 if (Arg *A =
54 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
55 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
56 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
57 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
58 << A->getBaseArg().getAsString(Args)
59 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
60 }
61 }
62}
63
64static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
65 // In gcc, only ARM checks this, but it seems reasonable to check universally.
66 if (Args.hasArg(options::OPT_static))
67 if (const Arg *A =
68 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
69 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
70 << "-static";
71}
72
73// Add backslashes to escape spaces and other backslashes.
74// This is used for the space-separated argument list specified with
75// the -dwarf-debug-flags option.
76static void EscapeSpacesAndBackslashes(const char *Arg,
77 SmallVectorImpl<char> &Res) {
78 for (; *Arg; ++Arg) {
79 switch (*Arg) {
80 default:
81 break;
82 case ' ':
83 case '\\':
84 Res.push_back('\\');
85 break;
86 }
87 Res.push_back(*Arg);
88 }
89}
90
91// Quote target names for inclusion in GNU Make dependency files.
92// Only the characters '$', '#', ' ', '\t' are quoted.
93static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
94 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
95 switch (Target[i]) {
96 case ' ':
97 case '\t':
98 // Escape the preceding backslashes
99 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
100 Res.push_back('\\');
101
102 // Escape the space/tab
103 Res.push_back('\\');
104 break;
105 case '$':
106 Res.push_back('$');
107 break;
108 case '#':
109 Res.push_back('\\');
110 break;
111 default:
112 break;
113 }
114
115 Res.push_back(Target[i]);
116 }
117}
118
119/// Apply \a Work on the current tool chain \a RegularToolChain and any other
120/// offloading tool chain that is associated with the current action \a JA.
121static void
122forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
123 const ToolChain &RegularToolChain,
124 llvm::function_ref<void(const ToolChain &)> Work) {
125 // Apply Work on the current/regular tool chain.
126 Work(RegularToolChain);
127
128 // Apply Work on all the offloading tool chains associated with the current
129 // action.
130 if (JA.isHostOffloading(Action::OFK_Cuda))
131 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
132 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
133 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
134
135 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
136 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
137 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
138 Work(*II->second);
139 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
140 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
141
142 //
143 // TODO: Add support for other offloading programming models here.
144 //
145}
146
147/// This is a helper function for validating the optional refinement step
148/// parameter in reciprocal argument strings. Return false if there is an error
149/// parsing the refinement step. Otherwise, return true and set the Position
150/// of the refinement step in the input string.
151static bool getRefinementStep(StringRef In, const Driver &D,
152 const Arg &A, size_t &Position) {
153 const char RefinementStepToken = ':';
154 Position = In.find(RefinementStepToken);
155 if (Position != StringRef::npos) {
156 StringRef Option = A.getOption().getName();
157 StringRef RefStep = In.substr(Position + 1);
158 // Allow exactly one numeric character for the additional refinement
159 // step parameter. This is reasonable for all currently-supported
160 // operations and architectures because we would expect that a larger value
161 // of refinement steps would cause the estimate "optimization" to
162 // under-perform the native operation. Also, if the estimate does not
163 // converge quickly, it probably will not ever converge, so further
164 // refinement steps will not produce a better answer.
165 if (RefStep.size() != 1) {
166 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
167 return false;
168 }
169 char RefStepChar = RefStep[0];
170 if (RefStepChar < '0' || RefStepChar > '9') {
171 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
172 return false;
173 }
174 }
175 return true;
176}
177
178/// The -mrecip flag requires processing of many optional parameters.
179static void ParseMRecip(const Driver &D, const ArgList &Args,
180 ArgStringList &OutStrings) {
181 StringRef DisabledPrefixIn = "!";
182 StringRef DisabledPrefixOut = "!";
183 StringRef EnabledPrefixOut = "";
184 StringRef Out = "-mrecip=";
185
186 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
187 if (!A)
188 return;
189
190 unsigned NumOptions = A->getNumValues();
191 if (NumOptions == 0) {
192 // No option is the same as "all".
193 OutStrings.push_back(Args.MakeArgString(Out + "all"));
194 return;
195 }
196
197 // Pass through "all", "none", or "default" with an optional refinement step.
198 if (NumOptions == 1) {
199 StringRef Val = A->getValue(0);
200 size_t RefStepLoc;
201 if (!getRefinementStep(Val, D, *A, RefStepLoc))
202 return;
203 StringRef ValBase = Val.slice(0, RefStepLoc);
204 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
205 OutStrings.push_back(Args.MakeArgString(Out + Val));
206 return;
207 }
208 }
209
210 // Each reciprocal type may be enabled or disabled individually.
211 // Check each input value for validity, concatenate them all back together,
212 // and pass through.
213
214 llvm::StringMap<bool> OptionStrings;
215 OptionStrings.insert(std::make_pair("divd", false));
216 OptionStrings.insert(std::make_pair("divf", false));
217 OptionStrings.insert(std::make_pair("vec-divd", false));
218 OptionStrings.insert(std::make_pair("vec-divf", false));
219 OptionStrings.insert(std::make_pair("sqrtd", false));
220 OptionStrings.insert(std::make_pair("sqrtf", false));
221 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
222 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
223
224 for (unsigned i = 0; i != NumOptions; ++i) {
225 StringRef Val = A->getValue(i);
226
227 bool IsDisabled = Val.startswith(DisabledPrefixIn);
228 // Ignore the disablement token for string matching.
229 if (IsDisabled)
230 Val = Val.substr(1);
231
232 size_t RefStep;
233 if (!getRefinementStep(Val, D, *A, RefStep))
234 return;
235
236 StringRef ValBase = Val.slice(0, RefStep);
237 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
238 if (OptionIter == OptionStrings.end()) {
239 // Try again specifying float suffix.
240 OptionIter = OptionStrings.find(ValBase.str() + 'f');
241 if (OptionIter == OptionStrings.end()) {
242 // The input name did not match any known option string.
243 D.Diag(diag::err_drv_unknown_argument) << Val;
244 return;
245 }
246 // The option was specified without a float or double suffix.
247 // Make sure that the double entry was not already specified.
248 // The float entry will be checked below.
249 if (OptionStrings[ValBase.str() + 'd']) {
250 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
251 return;
252 }
253 }
254
255 if (OptionIter->second == true) {
256 // Duplicate option specified.
257 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
258 return;
259 }
260
261 // Mark the matched option as found. Do not allow duplicate specifiers.
262 OptionIter->second = true;
263
264 // If the precision was not specified, also mark the double entry as found.
265 if (ValBase.back() != 'f' && ValBase.back() != 'd')
266 OptionStrings[ValBase.str() + 'd'] = true;
267
268 // Build the output string.
269 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
270 Out = Args.MakeArgString(Out + Prefix + Val);
271 if (i != NumOptions - 1)
272 Out = Args.MakeArgString(Out + ",");
273 }
274
275 OutStrings.push_back(Args.MakeArgString(Out));
276}
277
278/// The -mprefer-vector-width option accepts either a positive integer
279/// or the string "none".
280static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
281 ArgStringList &CmdArgs) {
282 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
283 if (!A)
284 return;
285
286 StringRef Value = A->getValue();
287 if (Value == "none") {
288 CmdArgs.push_back("-mprefer-vector-width=none");
289 } else {
290 unsigned Width;
291 if (Value.getAsInteger(10, Width)) {
292 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
293 return;
294 }
295 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
296 }
297}
298
299static void getWebAssemblyTargetFeatures(const ArgList &Args,
300 std::vector<StringRef> &Features) {
301 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
302}
303
304static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
305 const ArgList &Args, ArgStringList &CmdArgs,
306 bool ForAS) {
307 const Driver &D = TC.getDriver();
308 std::vector<StringRef> Features;
309 switch (Triple.getArch()) {
310 default:
311 break;
312 case llvm::Triple::mips:
313 case llvm::Triple::mipsel:
314 case llvm::Triple::mips64:
315 case llvm::Triple::mips64el:
316 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
317 break;
318
319 case llvm::Triple::arm:
320 case llvm::Triple::armeb:
321 case llvm::Triple::thumb:
322 case llvm::Triple::thumbeb:
323 arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
324 break;
325
326 case llvm::Triple::ppc:
327 case llvm::Triple::ppc64:
328 case llvm::Triple::ppc64le:
329 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
330 break;
331 case llvm::Triple::riscv32:
332 case llvm::Triple::riscv64:
333 riscv::getRISCVTargetFeatures(D, Args, Features);
334 break;
335 case llvm::Triple::systemz:
336 systemz::getSystemZTargetFeatures(Args, Features);
337 break;
338 case llvm::Triple::aarch64:
339 case llvm::Triple::aarch64_be:
340 aarch64::getAArch64TargetFeatures(D, Args, Features);
341 break;
342 case llvm::Triple::x86:
343 case llvm::Triple::x86_64:
344 x86::getX86TargetFeatures(D, Triple, Args, Features);
345 break;
346 case llvm::Triple::hexagon:
347 hexagon::getHexagonTargetFeatures(D, Args, Features);
348 break;
349 case llvm::Triple::wasm32:
350 case llvm::Triple::wasm64:
351 getWebAssemblyTargetFeatures(Args, Features);
352 break;
353 case llvm::Triple::sparc:
354 case llvm::Triple::sparcel:
355 case llvm::Triple::sparcv9:
356 sparc::getSparcTargetFeatures(D, Args, Features);
357 break;
358 case llvm::Triple::r600:
359 case llvm::Triple::amdgcn:
360 amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
361 break;
362 }
363
364 // Find the last of each feature.
365 llvm::StringMap<unsigned> LastOpt;
366 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
367 StringRef Name = Features[I];
368 assert(Name[0] == '-' || Name[0] == '+')(static_cast <bool> (Name[0] == '-' || Name[0] == '+') ?
void (0) : __assert_fail ("Name[0] == '-' || Name[0] == '+'"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 368, __extension__ __PRETTY_FUNCTION__))
;
369 LastOpt[Name.drop_front(1)] = I;
370 }
371
372 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
373 // If this feature was overridden, ignore it.
374 StringRef Name = Features[I];
375 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
376 assert(LastI != LastOpt.end())(static_cast <bool> (LastI != LastOpt.end()) ? void (0)
: __assert_fail ("LastI != LastOpt.end()", "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 376, __extension__ __PRETTY_FUNCTION__))
;
377 unsigned Last = LastI->second;
378 if (Last != I)
379 continue;
380
381 CmdArgs.push_back("-target-feature");
382 CmdArgs.push_back(Name.data());
383 }
384}
385
386static bool
387shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
388 const llvm::Triple &Triple) {
389 // We use the zero-cost exception tables for Objective-C if the non-fragile
390 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
391 // later.
392 if (runtime.isNonFragile())
393 return true;
394
395 if (!Triple.isMacOSX())
396 return false;
397
398 return (!Triple.isMacOSXVersionLT(10, 5) &&
399 (Triple.getArch() == llvm::Triple::x86_64 ||
400 Triple.getArch() == llvm::Triple::arm));
401}
402
403/// Adds exception related arguments to the driver command arguments. There's a
404/// master flag, -fexceptions and also language specific flags to enable/disable
405/// C++ and Objective-C exceptions. This makes it possible to for example
406/// disable C++ exceptions but enable Objective-C exceptions.
407static void addExceptionArgs(const ArgList &Args, types::ID InputType,
408 const ToolChain &TC, bool KernelOrKext,
409 const ObjCRuntime &objcRuntime,
410 ArgStringList &CmdArgs) {
411 const Driver &D = TC.getDriver();
412 const llvm::Triple &Triple = TC.getTriple();
413
414 if (KernelOrKext) {
415 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
416 // arguments now to avoid warnings about unused arguments.
417 Args.ClaimAllArgs(options::OPT_fexceptions);
418 Args.ClaimAllArgs(options::OPT_fno_exceptions);
419 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
420 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
421 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
422 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
423 return;
424 }
425
426 // See if the user explicitly enabled exceptions.
427 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
428 false);
429
430 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
431 // is not necessarily sensible, but follows GCC.
432 if (types::isObjC(InputType) &&
433 Args.hasFlag(options::OPT_fobjc_exceptions,
434 options::OPT_fno_objc_exceptions, true)) {
435 CmdArgs.push_back("-fobjc-exceptions");
436
437 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
438 }
439
440 if (types::isCXX(InputType)) {
441 // Disable C++ EH by default on XCore and PS4.
442 bool CXXExceptionsEnabled =
443 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
444 Arg *ExceptionArg = Args.getLastArg(
445 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
446 options::OPT_fexceptions, options::OPT_fno_exceptions);
447 if (ExceptionArg)
448 CXXExceptionsEnabled =
449 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
450 ExceptionArg->getOption().matches(options::OPT_fexceptions);
451
452 if (CXXExceptionsEnabled) {
453 if (Triple.isPS4CPU()) {
454 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
455 assert(ExceptionArg &&(static_cast <bool> (ExceptionArg && "On the PS4 exceptions should only be enabled if passing "
"an argument") ? void (0) : __assert_fail ("ExceptionArg && \"On the PS4 exceptions should only be enabled if passing \" \"an argument\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 457, __extension__ __PRETTY_FUNCTION__))
456 "On the PS4 exceptions should only be enabled if passing "(static_cast <bool> (ExceptionArg && "On the PS4 exceptions should only be enabled if passing "
"an argument") ? void (0) : __assert_fail ("ExceptionArg && \"On the PS4 exceptions should only be enabled if passing \" \"an argument\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 457, __extension__ __PRETTY_FUNCTION__))
457 "an argument")(static_cast <bool> (ExceptionArg && "On the PS4 exceptions should only be enabled if passing "
"an argument") ? void (0) : __assert_fail ("ExceptionArg && \"On the PS4 exceptions should only be enabled if passing \" \"an argument\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 457, __extension__ __PRETTY_FUNCTION__))
;
458 if (RTTIMode == ToolChain::RM_DisabledExplicitly) {
459 const Arg *RTTIArg = TC.getRTTIArg();
460 assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!")(static_cast <bool> (RTTIArg && "RTTI disabled explicitly but no RTTIArg!"
) ? void (0) : __assert_fail ("RTTIArg && \"RTTI disabled explicitly but no RTTIArg!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 460, __extension__ __PRETTY_FUNCTION__))
;
461 D.Diag(diag::err_drv_argument_not_allowed_with)
462 << RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args);
463 } else if (RTTIMode == ToolChain::RM_EnabledImplicitly)
464 D.Diag(diag::warn_drv_enabling_rtti_with_exceptions);
465 } else
466 assert(TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly)(static_cast <bool> (TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly
) ? void (0) : __assert_fail ("TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 466, __extension__ __PRETTY_FUNCTION__))
;
467
468 CmdArgs.push_back("-fcxx-exceptions");
469
470 EH = true;
471 }
472 }
473
474 if (EH)
475 CmdArgs.push_back("-fexceptions");
476}
477
478static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
479 bool Default = true;
480 if (TC.getTriple().isOSDarwin()) {
481 // The native darwin assembler doesn't support the linker_option directives,
482 // so we disable them if we think the .s file will be passed to it.
483 Default = TC.useIntegratedAs();
484 }
485 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
486 Default);
487}
488
489static bool ShouldDisableDwarfDirectory(const ArgList &Args,
490 const ToolChain &TC) {
491 bool UseDwarfDirectory =
492 Args.hasFlag(options::OPT_fdwarf_directory_asm,
493 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
494 return !UseDwarfDirectory;
495}
496
497// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
498// to the corresponding DebugInfoKind.
499static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
500 assert(A.getOption().matches(options::OPT_gN_Group) &&(static_cast <bool> (A.getOption().matches(options::OPT_gN_Group
) && "Not a -g option that specifies a debug-info level"
) ? 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-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 501, __extension__ __PRETTY_FUNCTION__))
501 "Not a -g option that specifies a debug-info level")(static_cast <bool> (A.getOption().matches(options::OPT_gN_Group
) && "Not a -g option that specifies a debug-info level"
) ? 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-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 501, __extension__ __PRETTY_FUNCTION__))
;
502 if (A.getOption().matches(options::OPT_g0) ||
503 A.getOption().matches(options::OPT_ggdb0))
504 return codegenoptions::NoDebugInfo;
505 if (A.getOption().matches(options::OPT_gline_tables_only) ||
506 A.getOption().matches(options::OPT_ggdb1))
507 return codegenoptions::DebugLineTablesOnly;
508 return codegenoptions::LimitedDebugInfo;
509}
510
511static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
512 switch (Triple.getArch()){
513 default:
514 return false;
515 case llvm::Triple::arm:
516 case llvm::Triple::thumb:
517 // ARM Darwin targets require a frame pointer to be always present to aid
518 // offline debugging via backtraces.
519 return Triple.isOSDarwin();
520 }
521}
522
523static bool useFramePointerForTargetByDefault(const ArgList &Args,
524 const llvm::Triple &Triple) {
525 switch (Triple.getArch()) {
526 case llvm::Triple::xcore:
527 case llvm::Triple::wasm32:
528 case llvm::Triple::wasm64:
529 // XCore never wants frame pointers, regardless of OS.
530 // WebAssembly never wants frame pointers.
531 return false;
532 default:
533 break;
534 }
535
536 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
537 switch (Triple.getArch()) {
538 // Don't use a frame pointer on linux if optimizing for certain targets.
539 case llvm::Triple::mips64:
540 case llvm::Triple::mips64el:
541 case llvm::Triple::mips:
542 case llvm::Triple::mipsel:
543 case llvm::Triple::ppc:
544 case llvm::Triple::ppc64:
545 case llvm::Triple::ppc64le:
546 case llvm::Triple::systemz:
547 case llvm::Triple::x86:
548 case llvm::Triple::x86_64:
549 return !areOptimizationsEnabled(Args);
550 default:
551 return true;
552 }
553 }
554
555 switch (Triple.getArch()) {
556 case llvm::Triple::riscv32:
557 case llvm::Triple::riscv64:
558 return !areOptimizationsEnabled(Args);
559 default:
560 break;
561 }
562
563 if (Triple.isOSWindows()) {
564 switch (Triple.getArch()) {
565 case llvm::Triple::x86:
566 return !areOptimizationsEnabled(Args);
567 case llvm::Triple::x86_64:
568 return Triple.isOSBinFormatMachO();
569 case llvm::Triple::arm:
570 case llvm::Triple::thumb:
571 // Windows on ARM builds with FPO disabled to aid fast stack walking
572 return true;
573 default:
574 // All other supported Windows ISAs use xdata unwind information, so frame
575 // pointers are not generally useful.
576 return false;
577 }
578 }
579
580 return true;
581}
582
583static bool shouldUseFramePointer(const ArgList &Args,
584 const llvm::Triple &Triple) {
585 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
586 options::OPT_fomit_frame_pointer))
587 return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
588 mustUseNonLeafFramePointerForTarget(Triple);
589
590 if (Args.hasArg(options::OPT_pg))
591 return true;
592
593 return useFramePointerForTargetByDefault(Args, Triple);
594}
595
596static bool shouldUseLeafFramePointer(const ArgList &Args,
597 const llvm::Triple &Triple) {
598 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
599 options::OPT_momit_leaf_frame_pointer))
600 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
601
602 if (Args.hasArg(options::OPT_pg))
603 return true;
604
605 if (Triple.isPS4CPU())
606 return false;
607
608 return useFramePointerForTargetByDefault(Args, Triple);
609}
610
611/// Add a CC1 option to specify the debug compilation directory.
612static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
613 SmallString<128> cwd;
614 if (!llvm::sys::fs::current_path(cwd)) {
615 CmdArgs.push_back("-fdebug-compilation-dir");
616 CmdArgs.push_back(Args.MakeArgString(cwd));
617 }
618}
619
620/// \brief Vectorize at all optimization levels greater than 1 except for -Oz.
621/// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
622static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
623 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
624 if (A->getOption().matches(options::OPT_O4) ||
625 A->getOption().matches(options::OPT_Ofast))
626 return true;
627
628 if (A->getOption().matches(options::OPT_O0))
629 return false;
630
631 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag")(static_cast <bool> (A->getOption().matches(options::
OPT_O) && "Must have a -O flag") ? void (0) : __assert_fail
("A->getOption().matches(options::OPT_O) && \"Must have a -O flag\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 631, __extension__ __PRETTY_FUNCTION__))
;
632
633 // Vectorize -Os.
634 StringRef S(A->getValue());
635 if (S == "s")
636 return true;
637
638 // Don't vectorize -Oz, unless it's the slp vectorizer.
639 if (S == "z")
640 return isSlpVec;
641
642 unsigned OptLevel = 0;
643 if (S.getAsInteger(10, OptLevel))
644 return false;
645
646 return OptLevel > 1;
647 }
648
649 return false;
650}
651
652/// Add -x lang to \p CmdArgs for \p Input.
653static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
654 ArgStringList &CmdArgs) {
655 // When using -verify-pch, we don't want to provide the type
656 // 'precompiled-header' if it was inferred from the file extension
657 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
658 return;
659
660 CmdArgs.push_back("-x");
661 if (Args.hasArg(options::OPT_rewrite_objc))
662 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
663 else {
664 // Map the driver type to the frontend type. This is mostly an identity
665 // mapping, except that the distinction between module interface units
666 // and other source files does not exist at the frontend layer.
667 const char *ClangType;
668 switch (Input.getType()) {
669 case types::TY_CXXModule:
670 ClangType = "c++";
671 break;
672 case types::TY_PP_CXXModule:
673 ClangType = "c++-cpp-output";
674 break;
675 default:
676 ClangType = types::getTypeName(Input.getType());
677 break;
678 }
679 CmdArgs.push_back(ClangType);
680 }
681}
682
683static void appendUserToPath(SmallVectorImpl<char> &Result) {
684#ifdef LLVM_ON_UNIX1
685 const char *Username = getenv("LOGNAME");
686#else
687 const char *Username = getenv("USERNAME");
688#endif
689 if (Username) {
690 // Validate that LoginName can be used in a path, and get its length.
691 size_t Len = 0;
692 for (const char *P = Username; *P; ++P, ++Len) {
693 if (!clang::isAlphanumeric(*P) && *P != '_') {
694 Username = nullptr;
695 break;
696 }
697 }
698
699 if (Username && Len > 0) {
700 Result.append(Username, Username + Len);
701 return;
702 }
703 }
704
705// Fallback to user id.
706#ifdef LLVM_ON_UNIX1
707 std::string UID = llvm::utostr(getuid());
708#else
709 // FIXME: Windows seems to have an 'SID' that might work.
710 std::string UID = "9999";
711#endif
712 Result.append(UID.begin(), UID.end());
713}
714
715static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
716 const InputInfo &Output, const ArgList &Args,
717 ArgStringList &CmdArgs) {
718
719 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
720 options::OPT_fprofile_generate_EQ,
721 options::OPT_fno_profile_generate);
722 if (PGOGenerateArg &&
723 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
724 PGOGenerateArg = nullptr;
725
726 auto *ProfileGenerateArg = Args.getLastArg(
727 options::OPT_fprofile_instr_generate,
728 options::OPT_fprofile_instr_generate_EQ,
729 options::OPT_fno_profile_instr_generate);
730 if (ProfileGenerateArg &&
731 ProfileGenerateArg->getOption().matches(
732 options::OPT_fno_profile_instr_generate))
733 ProfileGenerateArg = nullptr;
734
735 if (PGOGenerateArg && ProfileGenerateArg)
736 D.Diag(diag::err_drv_argument_not_allowed_with)
737 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
738
739 auto *ProfileUseArg = getLastProfileUseArg(Args);
740
741 if (PGOGenerateArg && ProfileUseArg)
742 D.Diag(diag::err_drv_argument_not_allowed_with)
743 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
744
745 if (ProfileGenerateArg && ProfileUseArg)
746 D.Diag(diag::err_drv_argument_not_allowed_with)
747 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
748
749 if (ProfileGenerateArg) {
750 if (ProfileGenerateArg->getOption().matches(
751 options::OPT_fprofile_instr_generate_EQ))
752 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
753 ProfileGenerateArg->getValue()));
754 // The default is to use Clang Instrumentation.
755 CmdArgs.push_back("-fprofile-instrument=clang");
756 }
757
758 if (PGOGenerateArg) {
759 CmdArgs.push_back("-fprofile-instrument=llvm");
760 if (PGOGenerateArg->getOption().matches(
761 options::OPT_fprofile_generate_EQ)) {
762 SmallString<128> Path(PGOGenerateArg->getValue());
763 llvm::sys::path::append(Path, "default_%m.profraw");
764 CmdArgs.push_back(
765 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
766 }
767 }
768
769 if (ProfileUseArg) {
770 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
771 CmdArgs.push_back(Args.MakeArgString(
772 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
773 else if ((ProfileUseArg->getOption().matches(
774 options::OPT_fprofile_use_EQ) ||
775 ProfileUseArg->getOption().matches(
776 options::OPT_fprofile_instr_use))) {
777 SmallString<128> Path(
778 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
779 if (Path.empty() || llvm::sys::fs::is_directory(Path))
780 llvm::sys::path::append(Path, "default.profdata");
781 CmdArgs.push_back(
782 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
783 }
784 }
785
786 if (Args.hasArg(options::OPT_ftest_coverage) ||
787 Args.hasArg(options::OPT_coverage))
788 CmdArgs.push_back("-femit-coverage-notes");
789 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
790 false) ||
791 Args.hasArg(options::OPT_coverage))
792 CmdArgs.push_back("-femit-coverage-data");
793
794 if (Args.hasFlag(options::OPT_fcoverage_mapping,
795 options::OPT_fno_coverage_mapping, false)) {
796 if (!ProfileGenerateArg)
797 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
798 << "-fcoverage-mapping"
799 << "-fprofile-instr-generate";
800
801 CmdArgs.push_back("-fcoverage-mapping");
802 }
803
804 if (C.getArgs().hasArg(options::OPT_c) ||
805 C.getArgs().hasArg(options::OPT_S)) {
806 if (Output.isFilename()) {
807 CmdArgs.push_back("-coverage-notes-file");
808 SmallString<128> OutputFilename;
809 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
810 OutputFilename = FinalOutput->getValue();
811 else
812 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
813 SmallString<128> CoverageFilename = OutputFilename;
814 if (llvm::sys::path::is_relative(CoverageFilename)) {
815 SmallString<128> Pwd;
816 if (!llvm::sys::fs::current_path(Pwd)) {
817 llvm::sys::path::append(Pwd, CoverageFilename);
818 CoverageFilename.swap(Pwd);
819 }
820 }
821 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
822 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
823
824 // Leave -fprofile-dir= an unused argument unless .gcda emission is
825 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
826 // the flag used. There is no -fno-profile-dir, so the user has no
827 // targeted way to suppress the warning.
828 if (Args.hasArg(options::OPT_fprofile_arcs) ||
829 Args.hasArg(options::OPT_coverage)) {
830 CmdArgs.push_back("-coverage-data-file");
831 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
832 CoverageFilename = FProfileDir->getValue();
833 llvm::sys::path::append(CoverageFilename, OutputFilename);
834 }
835 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
836 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
837 }
838 }
839 }
840}
841
842/// \brief Check whether the given input tree contains any compilation actions.
843static bool ContainsCompileAction(const Action *A) {
844 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
845 return true;
846
847 for (const auto &AI : A->inputs())
848 if (ContainsCompileAction(AI))
849 return true;
850
851 return false;
852}
853
854/// \brief Check if -relax-all should be passed to the internal assembler.
855/// This is done by default when compiling non-assembler source with -O0.
856static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
857 bool RelaxDefault = true;
858
859 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
860 RelaxDefault = A->getOption().matches(options::OPT_O0);
861
862 if (RelaxDefault) {
863 RelaxDefault = false;
864 for (const auto &Act : C.getActions()) {
865 if (ContainsCompileAction(Act)) {
866 RelaxDefault = true;
867 break;
868 }
869 }
870 }
871
872 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
873 RelaxDefault);
874}
875
876// Extract the integer N from a string spelled "-dwarf-N", returning 0
877// on mismatch. The StringRef input (rather than an Arg) allows
878// for use by the "-Xassembler" option parser.
879static unsigned DwarfVersionNum(StringRef ArgValue) {
880 return llvm::StringSwitch<unsigned>(ArgValue)
881 .Case("-gdwarf-2", 2)
882 .Case("-gdwarf-3", 3)
883 .Case("-gdwarf-4", 4)
884 .Case("-gdwarf-5", 5)
885 .Default(0);
886}
887
888static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
889 codegenoptions::DebugInfoKind DebugInfoKind,
890 unsigned DwarfVersion,
891 llvm::DebuggerKind DebuggerTuning) {
892 switch (DebugInfoKind) {
893 case codegenoptions::DebugLineTablesOnly:
894 CmdArgs.push_back("-debug-info-kind=line-tables-only");
895 break;
896 case codegenoptions::LimitedDebugInfo:
897 CmdArgs.push_back("-debug-info-kind=limited");
898 break;
899 case codegenoptions::FullDebugInfo:
900 CmdArgs.push_back("-debug-info-kind=standalone");
901 break;
902 default:
903 break;
904 }
905 if (DwarfVersion > 0)
906 CmdArgs.push_back(
907 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
908 switch (DebuggerTuning) {
909 case llvm::DebuggerKind::GDB:
910 CmdArgs.push_back("-debugger-tuning=gdb");
911 break;
912 case llvm::DebuggerKind::LLDB:
913 CmdArgs.push_back("-debugger-tuning=lldb");
914 break;
915 case llvm::DebuggerKind::SCE:
916 CmdArgs.push_back("-debugger-tuning=sce");
917 break;
918 default:
919 break;
920 }
921}
922
923static void RenderDebugInfoCompressionArgs(const ArgList &Args,
924 ArgStringList &CmdArgs,
925 const Driver &D) {
926 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
927 if (!A)
928 return;
929
930 if (A->getOption().getID() == options::OPT_gz) {
931 if (llvm::zlib::isAvailable())
932 CmdArgs.push_back("-compress-debug-sections");
933 else
934 D.Diag(diag::warn_debug_compression_unavailable);
935 return;
936 }
937
938 StringRef Value = A->getValue();
939 if (Value == "none") {
940 CmdArgs.push_back("-compress-debug-sections=none");
941 } else if (Value == "zlib" || Value == "zlib-gnu") {
942 if (llvm::zlib::isAvailable()) {
943 CmdArgs.push_back(
944 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
945 } else {
946 D.Diag(diag::warn_debug_compression_unavailable);
947 }
948 } else {
949 D.Diag(diag::err_drv_unsupported_option_argument)
950 << A->getOption().getName() << Value;
951 }
952}
953
954static const char *RelocationModelName(llvm::Reloc::Model Model) {
955 switch (Model) {
956 case llvm::Reloc::Static:
957 return "static";
958 case llvm::Reloc::PIC_:
959 return "pic";
960 case llvm::Reloc::DynamicNoPIC:
961 return "dynamic-no-pic";
962 case llvm::Reloc::ROPI:
963 return "ropi";
964 case llvm::Reloc::RWPI:
965 return "rwpi";
966 case llvm::Reloc::ROPI_RWPI:
967 return "ropi-rwpi";
968 }
969 llvm_unreachable("Unknown Reloc::Model kind")::llvm::llvm_unreachable_internal("Unknown Reloc::Model kind"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 969)
;
970}
971
972void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
973 const Driver &D, const ArgList &Args,
974 ArgStringList &CmdArgs,
975 const InputInfo &Output,
976 const InputInfoList &Inputs) const {
977 Arg *A;
978 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
979
980 CheckPreprocessingOptions(D, Args);
981
982 Args.AddLastArg(CmdArgs, options::OPT_C);
983 Args.AddLastArg(CmdArgs, options::OPT_CC);
984
985 // Handle dependency file generation.
986 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
987 (A = Args.getLastArg(options::OPT_MD)) ||
988 (A = Args.getLastArg(options::OPT_MMD))) {
989 // Determine the output location.
990 const char *DepFile;
991 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
992 DepFile = MF->getValue();
993 C.addFailureResultFile(DepFile, &JA);
994 } else if (Output.getType() == types::TY_Dependencies) {
995 DepFile = Output.getFilename();
996 } else if (A->getOption().matches(options::OPT_M) ||
997 A->getOption().matches(options::OPT_MM)) {
998 DepFile = "-";
999 } else {
1000 DepFile = getDependencyFileName(Args, Inputs);
1001 C.addFailureResultFile(DepFile, &JA);
1002 }
1003 CmdArgs.push_back("-dependency-file");
1004 CmdArgs.push_back(DepFile);
1005
1006 // Add a default target if one wasn't specified.
1007 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1008 const char *DepTarget;
1009
1010 // If user provided -o, that is the dependency target, except
1011 // when we are only generating a dependency file.
1012 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1013 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1014 DepTarget = OutputOpt->getValue();
1015 } else {
1016 // Otherwise derive from the base input.
1017 //
1018 // FIXME: This should use the computed output file location.
1019 SmallString<128> P(Inputs[0].getBaseInput());
1020 llvm::sys::path::replace_extension(P, "o");
1021 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1022 }
1023
1024 if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1025 CmdArgs.push_back("-w");
1026 }
1027 CmdArgs.push_back("-MT");
1028 SmallString<128> Quoted;
1029 QuoteTarget(DepTarget, Quoted);
1030 CmdArgs.push_back(Args.MakeArgString(Quoted));
1031 }
1032
1033 if (A->getOption().matches(options::OPT_M) ||
1034 A->getOption().matches(options::OPT_MD))
1035 CmdArgs.push_back("-sys-header-deps");
1036 if ((isa<PrecompileJobAction>(JA) &&
1037 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1038 Args.hasArg(options::OPT_fmodule_file_deps))
1039 CmdArgs.push_back("-module-file-deps");
1040 }
1041
1042 if (Args.hasArg(options::OPT_MG)) {
1043 if (!A || A->getOption().matches(options::OPT_MD) ||
1044 A->getOption().matches(options::OPT_MMD))
1045 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1046 CmdArgs.push_back("-MG");
1047 }
1048
1049 Args.AddLastArg(CmdArgs, options::OPT_MP);
1050 Args.AddLastArg(CmdArgs, options::OPT_MV);
1051
1052 // Convert all -MQ <target> args to -MT <quoted target>
1053 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1054 A->claim();
1055
1056 if (A->getOption().matches(options::OPT_MQ)) {
1057 CmdArgs.push_back("-MT");
1058 SmallString<128> Quoted;
1059 QuoteTarget(A->getValue(), Quoted);
1060 CmdArgs.push_back(Args.MakeArgString(Quoted));
1061
1062 // -MT flag - no change
1063 } else {
1064 A->render(Args, CmdArgs);
1065 }
1066 }
1067
1068 // Add offload include arguments specific for CUDA. This must happen before
1069 // we -I or -include anything else, because we must pick up the CUDA headers
1070 // from the particular CUDA installation, rather than from e.g.
1071 // /usr/local/include.
1072 if (JA.isOffloading(Action::OFK_Cuda))
1073 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1074
1075 // Add -i* options, and automatically translate to
1076 // -include-pch/-include-pth for transparent PCH support. It's
1077 // wonky, but we include looking for .gch so we can support seamless
1078 // replacement into a build system already set up to be generating
1079 // .gch files.
1080 int YcIndex = -1, YuIndex = -1;
1081 {
1082 int AI = -1;
1083 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1084 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1085 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1086 // Walk the whole i_Group and skip non "-include" flags so that the index
1087 // here matches the index in the next loop below.
1088 ++AI;
1089 if (!A->getOption().matches(options::OPT_include))
1090 continue;
1091 if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0)
1092 YcIndex = AI;
1093 if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0)
1094 YuIndex = AI;
1095 }
1096 }
1097 if (isa<PrecompileJobAction>(JA) && YcIndex != -1) {
1098 Driver::InputList Inputs;
1099 D.BuildInputs(getToolChain(), C.getArgs(), Inputs);
1100 assert(Inputs.size() == 1 && "Need one input when building pch")(static_cast <bool> (Inputs.size() == 1 && "Need one input when building pch"
) ? void (0) : __assert_fail ("Inputs.size() == 1 && \"Need one input when building pch\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1100, __extension__ __PRETTY_FUNCTION__))
;
1101 CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") +
1102 Inputs[0].second->getValue()));
1103 }
1104
1105 bool RenderedImplicitInclude = false;
1106 int AI = -1;
1107 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1108 ++AI;
1109
1110 if (getToolChain().getDriver().IsCLMode() &&
1111 A->getOption().matches(options::OPT_include)) {
1112 // In clang-cl mode, /Ycfoo.h means that all code up to a foo.h
1113 // include is compiled into foo.h, and everything after goes into
1114 // the .obj file. /Yufoo.h means that all includes prior to and including
1115 // foo.h are completely skipped and replaced with a use of the pch file
1116 // for foo.h. (Each flag can have at most one value, multiple /Yc flags
1117 // just mean that the last one wins.) If /Yc and /Yu are both present
1118 // and refer to the same file, /Yc wins.
1119 // Note that OPT__SLASH_FI gets mapped to OPT_include.
1120 // FIXME: The code here assumes that /Yc and /Yu refer to the same file.
1121 // cl.exe seems to support both flags with different values, but that
1122 // seems strange (which flag does /Fp now refer to?), so don't implement
1123 // that until someone needs it.
1124 int PchIndex = YcIndex != -1 ? YcIndex : YuIndex;
1125 if (PchIndex != -1) {
1126 if (isa<PrecompileJobAction>(JA)) {
1127 // When building the pch, skip all includes after the pch.
1128 assert(YcIndex != -1 && PchIndex == YcIndex)(static_cast <bool> (YcIndex != -1 && PchIndex ==
YcIndex) ? void (0) : __assert_fail ("YcIndex != -1 && PchIndex == YcIndex"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1128, __extension__ __PRETTY_FUNCTION__))
;
1129 if (AI >= YcIndex)
1130 continue;
1131 } else {
1132 // When using the pch, skip all includes prior to the pch.
1133 if (AI < PchIndex) {
1134 A->claim();
1135 continue;
1136 }
1137 if (AI == PchIndex) {
1138 A->claim();
1139 CmdArgs.push_back("-include-pch");
1140 CmdArgs.push_back(
1141 Args.MakeArgString(D.GetClPchPath(C, A->getValue())));
1142 continue;
1143 }
1144 }
1145 }
1146 } else if (A->getOption().matches(options::OPT_include)) {
1147 // Handling of gcc-style gch precompiled headers.
1148 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1149 RenderedImplicitInclude = true;
1150
1151 // Use PCH if the user requested it.
1152 bool UsePCH = D.CCCUsePCH;
1153
1154 bool FoundPTH = false;
1155 bool FoundPCH = false;
1156 SmallString<128> P(A->getValue());
1157 // We want the files to have a name like foo.h.pch. Add a dummy extension
1158 // so that replace_extension does the right thing.
1159 P += ".dummy";
1160 if (UsePCH) {
1161 llvm::sys::path::replace_extension(P, "pch");
1162 if (llvm::sys::fs::exists(P))
1163 FoundPCH = true;
1164 }
1165
1166 if (!FoundPCH) {
1167 llvm::sys::path::replace_extension(P, "pth");
1168 if (llvm::sys::fs::exists(P))
1169 FoundPTH = true;
1170 }
1171
1172 if (!FoundPCH && !FoundPTH) {
1173 llvm::sys::path::replace_extension(P, "gch");
1174 if (llvm::sys::fs::exists(P)) {
1175 FoundPCH = UsePCH;
1176 FoundPTH = !UsePCH;
1177 }
1178 }
1179
1180 if (FoundPCH || FoundPTH) {
1181 if (IsFirstImplicitInclude) {
1182 A->claim();
1183 if (UsePCH)
1184 CmdArgs.push_back("-include-pch");
1185 else
1186 CmdArgs.push_back("-include-pth");
1187 CmdArgs.push_back(Args.MakeArgString(P));
1188 continue;
1189 } else {
1190 // Ignore the PCH if not first on command line and emit warning.
1191 D.Diag(diag::warn_drv_pch_not_first_include) << P
1192 << A->getAsString(Args);
1193 }
1194 }
1195 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1196 // Handling of paths which must come late. These entries are handled by
1197 // the toolchain itself after the resource dir is inserted in the right
1198 // search order.
1199 // Do not claim the argument so that the use of the argument does not
1200 // silently go unnoticed on toolchains which do not honour the option.
1201 continue;
1202 }
1203
1204 // Not translated, render as usual.
1205 A->claim();
1206 A->render(Args, CmdArgs);
1207 }
1208
1209 Args.AddAllArgs(CmdArgs,
1210 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1211 options::OPT_F, options::OPT_index_header_map});
1212
1213 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1214
1215 // FIXME: There is a very unfortunate problem here, some troubled
1216 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1217 // really support that we would have to parse and then translate
1218 // those options. :(
1219 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1220 options::OPT_Xpreprocessor);
1221
1222 // -I- is a deprecated GCC feature, reject it.
1223 if (Arg *A = Args.getLastArg(options::OPT_I_))
1224 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1225
1226 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1227 // -isysroot to the CC1 invocation.
1228 StringRef sysroot = C.getSysRoot();
1229 if (sysroot != "") {
1230 if (!Args.hasArg(options::OPT_isysroot)) {
1231 CmdArgs.push_back("-isysroot");
1232 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1233 }
1234 }
1235
1236 // Parse additional include paths from environment variables.
1237 // FIXME: We should probably sink the logic for handling these from the
1238 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1239 // CPATH - included following the user specified includes (but prior to
1240 // builtin and standard includes).
1241 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1242 // C_INCLUDE_PATH - system includes enabled when compiling C.
1243 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1244 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1245 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1246 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1247 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1248 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1249 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1250
1251 // While adding the include arguments, we also attempt to retrieve the
1252 // arguments of related offloading toolchains or arguments that are specific
1253 // of an offloading programming model.
1254
1255 // Add C++ include arguments, if needed.
1256 if (types::isCXX(Inputs[0].getType()))
1257 forAllAssociatedToolChains(C, JA, getToolChain(),
1258 [&Args, &CmdArgs](const ToolChain &TC) {
1259 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1260 });
1261
1262 // Add system include arguments for all targets but IAMCU.
1263 if (!IsIAMCU)
1264 forAllAssociatedToolChains(C, JA, getToolChain(),
1265 [&Args, &CmdArgs](const ToolChain &TC) {
1266 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1267 });
1268 else {
1269 // For IAMCU add special include arguments.
1270 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1271 }
1272}
1273
1274// FIXME: Move to target hook.
1275static bool isSignedCharDefault(const llvm::Triple &Triple) {
1276 switch (Triple.getArch()) {
1277 default:
1278 return true;
1279
1280 case llvm::Triple::aarch64:
1281 case llvm::Triple::aarch64_be:
1282 case llvm::Triple::arm:
1283 case llvm::Triple::armeb:
1284 case llvm::Triple::thumb:
1285 case llvm::Triple::thumbeb:
1286 if (Triple.isOSDarwin() || Triple.isOSWindows())
1287 return true;
1288 return false;
1289
1290 case llvm::Triple::ppc:
1291 case llvm::Triple::ppc64:
1292 if (Triple.isOSDarwin())
1293 return true;
1294 return false;
1295
1296 case llvm::Triple::hexagon:
1297 case llvm::Triple::ppc64le:
1298 case llvm::Triple::riscv32:
1299 case llvm::Triple::riscv64:
1300 case llvm::Triple::systemz:
1301 case llvm::Triple::xcore:
1302 return false;
1303 }
1304}
1305
1306static bool isNoCommonDefault(const llvm::Triple &Triple) {
1307 switch (Triple.getArch()) {
1308 default:
1309 return false;
1310
1311 case llvm::Triple::xcore:
1312 case llvm::Triple::wasm32:
1313 case llvm::Triple::wasm64:
1314 return true;
1315 }
1316}
1317
1318void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1319 ArgStringList &CmdArgs, bool KernelOrKext) const {
1320 // Select the ABI to use.
1321 // FIXME: Support -meabi.
1322 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1323 const char *ABIName = nullptr;
1324 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1325 ABIName = A->getValue();
1326 else {
1327 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1328 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1329 }
1330
1331 CmdArgs.push_back("-target-abi");
1332 CmdArgs.push_back(ABIName);
1333
1334 // Determine floating point ABI from the options & target defaults.
1335 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1336 if (ABI == arm::FloatABI::Soft) {
1337 // Floating point operations and argument passing are soft.
1338 // FIXME: This changes CPP defines, we need -target-soft-float.
1339 CmdArgs.push_back("-msoft-float");
1340 CmdArgs.push_back("-mfloat-abi");
1341 CmdArgs.push_back("soft");
1342 } else if (ABI == arm::FloatABI::SoftFP) {
1343 // Floating point operations are hard, but argument passing is soft.
1344 CmdArgs.push_back("-mfloat-abi");
1345 CmdArgs.push_back("soft");
1346 } else {
1347 // Floating point operations and argument passing are hard.
1348 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!")(static_cast <bool> (ABI == arm::FloatABI::Hard &&
"Invalid float abi!") ? void (0) : __assert_fail ("ABI == arm::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1348, __extension__ __PRETTY_FUNCTION__))
;
1349 CmdArgs.push_back("-mfloat-abi");
1350 CmdArgs.push_back("hard");
1351 }
1352
1353 // Forward the -mglobal-merge option for explicit control over the pass.
1354 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1355 options::OPT_mno_global_merge)) {
1356 CmdArgs.push_back("-backend-option");
1357 if (A->getOption().matches(options::OPT_mno_global_merge))
1358 CmdArgs.push_back("-arm-global-merge=false");
1359 else
1360 CmdArgs.push_back("-arm-global-merge=true");
1361 }
1362
1363 if (!Args.hasFlag(options::OPT_mimplicit_float,
1364 options::OPT_mno_implicit_float, true))
1365 CmdArgs.push_back("-no-implicit-float");
1366}
1367
1368void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1369 const ArgList &Args, bool KernelOrKext,
1370 ArgStringList &CmdArgs) const {
1371 const ToolChain &TC = getToolChain();
1372
1373 // Add the target features
1374 getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1375
1376 // Add target specific flags.
1377 switch (TC.getArch()) {
1378 default:
1379 break;
1380
1381 case llvm::Triple::arm:
1382 case llvm::Triple::armeb:
1383 case llvm::Triple::thumb:
1384 case llvm::Triple::thumbeb:
1385 // Use the effective triple, which takes into account the deployment target.
1386 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1387 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1388 break;
1389
1390 case llvm::Triple::aarch64:
1391 case llvm::Triple::aarch64_be:
1392 AddAArch64TargetArgs(Args, CmdArgs);
1393 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1394 break;
1395
1396 case llvm::Triple::mips:
1397 case llvm::Triple::mipsel:
1398 case llvm::Triple::mips64:
1399 case llvm::Triple::mips64el:
1400 AddMIPSTargetArgs(Args, CmdArgs);
1401 break;
1402
1403 case llvm::Triple::ppc:
1404 case llvm::Triple::ppc64:
1405 case llvm::Triple::ppc64le:
1406 AddPPCTargetArgs(Args, CmdArgs);
1407 break;
1408
1409 case llvm::Triple::riscv32:
1410 case llvm::Triple::riscv64:
1411 AddRISCVTargetArgs(Args, CmdArgs);
1412 break;
1413
1414 case llvm::Triple::sparc:
1415 case llvm::Triple::sparcel:
1416 case llvm::Triple::sparcv9:
1417 AddSparcTargetArgs(Args, CmdArgs);
1418 break;
1419
1420 case llvm::Triple::systemz:
1421 AddSystemZTargetArgs(Args, CmdArgs);
1422 break;
1423
1424 case llvm::Triple::x86:
1425 case llvm::Triple::x86_64:
1426 AddX86TargetArgs(Args, CmdArgs);
1427 break;
1428
1429 case llvm::Triple::lanai:
1430 AddLanaiTargetArgs(Args, CmdArgs);
1431 break;
1432
1433 case llvm::Triple::hexagon:
1434 AddHexagonTargetArgs(Args, CmdArgs);
1435 break;
1436
1437 case llvm::Triple::wasm32:
1438 case llvm::Triple::wasm64:
1439 AddWebAssemblyTargetArgs(Args, CmdArgs);
1440 break;
1441 }
1442}
1443
1444void Clang::AddAArch64TargetArgs(const ArgList &Args,
1445 ArgStringList &CmdArgs) const {
1446 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1447
1448 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1449 Args.hasArg(options::OPT_mkernel) ||
1450 Args.hasArg(options::OPT_fapple_kext))
1451 CmdArgs.push_back("-disable-red-zone");
1452
1453 if (!Args.hasFlag(options::OPT_mimplicit_float,
1454 options::OPT_mno_implicit_float, true))
1455 CmdArgs.push_back("-no-implicit-float");
1456
1457 const char *ABIName = nullptr;
1458 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1459 ABIName = A->getValue();
1460 else if (Triple.isOSDarwin())
1461 ABIName = "darwinpcs";
1462 else
1463 ABIName = "aapcs";
1464
1465 CmdArgs.push_back("-target-abi");
1466 CmdArgs.push_back(ABIName);
1467
1468 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1469 options::OPT_mno_fix_cortex_a53_835769)) {
1470 CmdArgs.push_back("-backend-option");
1471 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1472 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1473 else
1474 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1475 } else if (Triple.isAndroid()) {
1476 // Enabled A53 errata (835769) workaround by default on android
1477 CmdArgs.push_back("-backend-option");
1478 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1479 }
1480
1481 // Forward the -mglobal-merge option for explicit control over the pass.
1482 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1483 options::OPT_mno_global_merge)) {
1484 CmdArgs.push_back("-backend-option");
1485 if (A->getOption().matches(options::OPT_mno_global_merge))
1486 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1487 else
1488 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1489 }
1490}
1491
1492void Clang::AddMIPSTargetArgs(const ArgList &Args,
1493 ArgStringList &CmdArgs) const {
1494 const Driver &D = getToolChain().getDriver();
1495 StringRef CPUName;
1496 StringRef ABIName;
1497 const llvm::Triple &Triple = getToolChain().getTriple();
1498 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1499
1500 CmdArgs.push_back("-target-abi");
1501 CmdArgs.push_back(ABIName.data());
1502
1503 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1504 if (ABI == mips::FloatABI::Soft) {
1505 // Floating point operations and argument passing are soft.
1506 CmdArgs.push_back("-msoft-float");
1507 CmdArgs.push_back("-mfloat-abi");
1508 CmdArgs.push_back("soft");
1509 } else {
1510 // Floating point operations and argument passing are hard.
1511 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!")(static_cast <bool> (ABI == mips::FloatABI::Hard &&
"Invalid float abi!") ? void (0) : __assert_fail ("ABI == mips::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1511, __extension__ __PRETTY_FUNCTION__))
;
1512 CmdArgs.push_back("-mfloat-abi");
1513 CmdArgs.push_back("hard");
1514 }
1515
1516 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1517 if (A->getOption().matches(options::OPT_mxgot)) {
1518 CmdArgs.push_back("-mllvm");
1519 CmdArgs.push_back("-mxgot");
1520 }
1521 }
1522
1523 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1524 options::OPT_mno_ldc1_sdc1)) {
1525 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1526 CmdArgs.push_back("-mllvm");
1527 CmdArgs.push_back("-mno-ldc1-sdc1");
1528 }
1529 }
1530
1531 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1532 options::OPT_mno_check_zero_division)) {
1533 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1534 CmdArgs.push_back("-mllvm");
1535 CmdArgs.push_back("-mno-check-zero-division");
1536 }
1537 }
1538
1539 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1540 StringRef v = A->getValue();
1541 CmdArgs.push_back("-mllvm");
1542 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1543 A->claim();
1544 }
1545
1546 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1547 Arg *ABICalls =
1548 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1549
1550 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1551 // -mgpopt is the default for static, -fno-pic environments but these two
1552 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1553 // the only case where -mllvm -mgpopt is passed.
1554 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1555 // passed explicitly when compiling something with -mabicalls
1556 // (implictly) in affect. Currently the warning is in the backend.
1557 //
1558 // When the ABI in use is N64, we also need to determine the PIC mode that
1559 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1560 bool NoABICalls =
1561 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1562
1563 llvm::Reloc::Model RelocationModel;
1564 unsigned PICLevel;
1565 bool IsPIE;
1566 std::tie(RelocationModel, PICLevel, IsPIE) =
1567 ParsePICArgs(getToolChain(), Args);
1568
1569 NoABICalls = NoABICalls ||
1570 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1571
1572 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1573 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1574 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1575 CmdArgs.push_back("-mllvm");
1576 CmdArgs.push_back("-mgpopt");
1577
1578 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1579 options::OPT_mno_local_sdata);
1580 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1581 options::OPT_mno_extern_sdata);
1582 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1583 options::OPT_mno_embedded_data);
1584 if (LocalSData) {
1585 CmdArgs.push_back("-mllvm");
1586 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1587 CmdArgs.push_back("-mlocal-sdata=1");
1588 } else {
1589 CmdArgs.push_back("-mlocal-sdata=0");
1590 }
1591 LocalSData->claim();
1592 }
1593
1594 if (ExternSData) {
1595 CmdArgs.push_back("-mllvm");
1596 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1597 CmdArgs.push_back("-mextern-sdata=1");
1598 } else {
1599 CmdArgs.push_back("-mextern-sdata=0");
1600 }
1601 ExternSData->claim();
1602 }
1603
1604 if (EmbeddedData) {
1605 CmdArgs.push_back("-mllvm");
1606 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1607 CmdArgs.push_back("-membedded-data=1");
1608 } else {
1609 CmdArgs.push_back("-membedded-data=0");
1610 }
1611 EmbeddedData->claim();
1612 }
1613
1614 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1615 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1616
1617 if (GPOpt)
1618 GPOpt->claim();
1619
1620 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1621 StringRef Val = StringRef(A->getValue());
1622 if (mips::hasCompactBranches(CPUName)) {
1623 if (Val == "never" || Val == "always" || Val == "optimal") {
1624 CmdArgs.push_back("-mllvm");
1625 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1626 } else
1627 D.Diag(diag::err_drv_unsupported_option_argument)
1628 << A->getOption().getName() << Val;
1629 } else
1630 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1631 }
1632}
1633
1634void Clang::AddPPCTargetArgs(const ArgList &Args,
1635 ArgStringList &CmdArgs) const {
1636 // Select the ABI to use.
1637 const char *ABIName = nullptr;
1638 if (getToolChain().getTriple().isOSLinux())
1639 switch (getToolChain().getArch()) {
1640 case llvm::Triple::ppc64: {
1641 // When targeting a processor that supports QPX, or if QPX is
1642 // specifically enabled, default to using the ABI that supports QPX (so
1643 // long as it is not specifically disabled).
1644 bool HasQPX = false;
1645 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1646 HasQPX = A->getValue() == StringRef("a2q");
1647 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1648 if (HasQPX) {
1649 ABIName = "elfv1-qpx";
1650 break;
1651 }
1652
1653 ABIName = "elfv1";
1654 break;
1655 }
1656 case llvm::Triple::ppc64le:
1657 ABIName = "elfv2";
1658 break;
1659 default:
1660 break;
1661 }
1662
1663 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1664 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1665 // the option if given as we don't have backend support for any targets
1666 // that don't use the altivec abi.
1667 if (StringRef(A->getValue()) != "altivec")
1668 ABIName = A->getValue();
1669
1670 ppc::FloatABI FloatABI =
1671 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1672
1673 if (FloatABI == ppc::FloatABI::Soft) {
1674 // Floating point operations and argument passing are soft.
1675 CmdArgs.push_back("-msoft-float");
1676 CmdArgs.push_back("-mfloat-abi");
1677 CmdArgs.push_back("soft");
1678 } else {
1679 // Floating point operations and argument passing are hard.
1680 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!")(static_cast <bool> (FloatABI == ppc::FloatABI::Hard &&
"Invalid float abi!") ? void (0) : __assert_fail ("FloatABI == ppc::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1680, __extension__ __PRETTY_FUNCTION__))
;
1681 CmdArgs.push_back("-mfloat-abi");
1682 CmdArgs.push_back("hard");
1683 }
1684
1685 if (ABIName) {
1686 CmdArgs.push_back("-target-abi");
1687 CmdArgs.push_back(ABIName);
1688 }
1689}
1690
1691void Clang::AddRISCVTargetArgs(const ArgList &Args,
1692 ArgStringList &CmdArgs) const {
1693 // FIXME: currently defaults to the soft-float ABIs. Will need to be
1694 // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropiate.
1695 const char *ABIName = nullptr;
1696 const llvm::Triple &Triple = getToolChain().getTriple();
1697 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1698 ABIName = A->getValue();
1699 else if (Triple.getArch() == llvm::Triple::riscv32)
1700 ABIName = "ilp32";
1701 else if (Triple.getArch() == llvm::Triple::riscv64)
1702 ABIName = "lp64";
1703 else
1704 llvm_unreachable("Unexpected triple!")::llvm::llvm_unreachable_internal("Unexpected triple!", "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1704)
;
1705
1706 CmdArgs.push_back("-target-abi");
1707 CmdArgs.push_back(ABIName);
1708}
1709
1710void Clang::AddSparcTargetArgs(const ArgList &Args,
1711 ArgStringList &CmdArgs) const {
1712 sparc::FloatABI FloatABI =
1713 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1714
1715 if (FloatABI == sparc::FloatABI::Soft) {
1716 // Floating point operations and argument passing are soft.
1717 CmdArgs.push_back("-msoft-float");
1718 CmdArgs.push_back("-mfloat-abi");
1719 CmdArgs.push_back("soft");
1720 } else {
1721 // Floating point operations and argument passing are hard.
1722 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!")(static_cast <bool> (FloatABI == sparc::FloatABI::Hard &&
"Invalid float abi!") ? void (0) : __assert_fail ("FloatABI == sparc::FloatABI::Hard && \"Invalid float abi!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 1722, __extension__ __PRETTY_FUNCTION__))
;
1723 CmdArgs.push_back("-mfloat-abi");
1724 CmdArgs.push_back("hard");
1725 }
1726}
1727
1728void Clang::AddSystemZTargetArgs(const ArgList &Args,
1729 ArgStringList &CmdArgs) const {
1730 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1731 CmdArgs.push_back("-mbackchain");
1732}
1733
1734void Clang::AddX86TargetArgs(const ArgList &Args,
1735 ArgStringList &CmdArgs) const {
1736 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1737 Args.hasArg(options::OPT_mkernel) ||
1738 Args.hasArg(options::OPT_fapple_kext))
1739 CmdArgs.push_back("-disable-red-zone");
1740
1741 // Default to avoid implicit floating-point for kernel/kext code, but allow
1742 // that to be overridden with -mno-soft-float.
1743 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1744 Args.hasArg(options::OPT_fapple_kext));
1745 if (Arg *A = Args.getLastArg(
1746 options::OPT_msoft_float, options::OPT_mno_soft_float,
1747 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1748 const Option &O = A->getOption();
1749 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1750 O.matches(options::OPT_msoft_float));
1751 }
1752 if (NoImplicitFloat)
1753 CmdArgs.push_back("-no-implicit-float");
1754
1755 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1756 StringRef Value = A->getValue();
1757 if (Value == "intel" || Value == "att") {
1758 CmdArgs.push_back("-mllvm");
1759 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1760 } else {
1761 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1762 << A->getOption().getName() << Value;
1763 }
1764 } else if (getToolChain().getDriver().IsCLMode()) {
1765 CmdArgs.push_back("-mllvm");
1766 CmdArgs.push_back("-x86-asm-syntax=intel");
1767 }
1768
1769 // Set flags to support MCU ABI.
1770 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1771 CmdArgs.push_back("-mfloat-abi");
1772 CmdArgs.push_back("soft");
1773 CmdArgs.push_back("-mstack-alignment=4");
1774 }
1775}
1776
1777void Clang::AddHexagonTargetArgs(const ArgList &Args,
1778 ArgStringList &CmdArgs) const {
1779 CmdArgs.push_back("-mqdsp6-compat");
1780 CmdArgs.push_back("-Wreturn-type");
1781
1782 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1783 CmdArgs.push_back("-mllvm");
1784 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1785 Twine(G.getValue())));
1786 }
1787
1788 if (!Args.hasArg(options::OPT_fno_short_enums))
1789 CmdArgs.push_back("-fshort-enums");
1790 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1791 CmdArgs.push_back("-mllvm");
1792 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1793 }
1794 CmdArgs.push_back("-mllvm");
1795 CmdArgs.push_back("-machine-sink-split=0");
1796}
1797
1798void Clang::AddLanaiTargetArgs(const ArgList &Args,
1799 ArgStringList &CmdArgs) const {
1800 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1801 StringRef CPUName = A->getValue();
1802
1803 CmdArgs.push_back("-target-cpu");
1804 CmdArgs.push_back(Args.MakeArgString(CPUName));
1805 }
1806 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1807 StringRef Value = A->getValue();
1808 // Only support mregparm=4 to support old usage. Report error for all other
1809 // cases.
1810 int Mregparm;
1811 if (Value.getAsInteger(10, Mregparm)) {
1812 if (Mregparm != 4) {
1813 getToolChain().getDriver().Diag(
1814 diag::err_drv_unsupported_option_argument)
1815 << A->getOption().getName() << Value;
1816 }
1817 }
1818 }
1819}
1820
1821void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1822 ArgStringList &CmdArgs) const {
1823 // Default to "hidden" visibility.
1824 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1825 options::OPT_fvisibility_ms_compat)) {
1826 CmdArgs.push_back("-fvisibility");
1827 CmdArgs.push_back("hidden");
1828 }
1829}
1830
1831void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1832 StringRef Target, const InputInfo &Output,
1833 const InputInfo &Input, const ArgList &Args) const {
1834 // If this is a dry run, do not create the compilation database file.
1835 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1836 return;
1837
1838 using llvm::yaml::escape;
1839 const Driver &D = getToolChain().getDriver();
1840
1841 if (!CompilationDatabase) {
1842 std::error_code EC;
1843 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1844 if (EC) {
1845 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1846 << EC.message();
1847 return;
1848 }
1849 CompilationDatabase = std::move(File);
1850 }
1851 auto &CDB = *CompilationDatabase;
1852 SmallString<128> Buf;
1853 if (llvm::sys::fs::current_path(Buf))
1854 Buf = ".";
1855 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1856 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1857 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1858 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1859 Buf = "-x";
1860 Buf += types::getTypeName(Input.getType());
1861 CDB << ", \"" << escape(Buf) << "\"";
1862 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1863 Buf = "--sysroot=";
1864 Buf += D.SysRoot;
1865 CDB << ", \"" << escape(Buf) << "\"";
1866 }
1867 CDB << ", \"" << escape(Input.getFilename()) << "\"";
1868 for (auto &A: Args) {
1869 auto &O = A->getOption();
1870 // Skip language selection, which is positional.
1871 if (O.getID() == options::OPT_x)
1872 continue;
1873 // Skip writing dependency output and the compilation database itself.
1874 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1875 continue;
1876 // Skip inputs.
1877 if (O.getKind() == Option::InputClass)
1878 continue;
1879 // All other arguments are quoted and appended.
1880 ArgStringList ASL;
1881 A->render(Args, ASL);
1882 for (auto &it: ASL)
1883 CDB << ", \"" << escape(it) << "\"";
1884 }
1885 Buf = "--target=";
1886 Buf += Target;
1887 CDB << ", \"" << escape(Buf) << "\"]},\n";
1888}
1889
1890static void CollectArgsForIntegratedAssembler(Compilation &C,
1891 const ArgList &Args,
1892 ArgStringList &CmdArgs,
1893 const Driver &D) {
1894 if (UseRelaxAll(C, Args))
1895 CmdArgs.push_back("-mrelax-all");
1896
1897 // Only default to -mincremental-linker-compatible if we think we are
1898 // targeting the MSVC linker.
1899 bool DefaultIncrementalLinkerCompatible =
1900 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1901 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1902 options::OPT_mno_incremental_linker_compatible,
1903 DefaultIncrementalLinkerCompatible))
1904 CmdArgs.push_back("-mincremental-linker-compatible");
1905
1906 switch (C.getDefaultToolChain().getArch()) {
1907 case llvm::Triple::arm:
1908 case llvm::Triple::armeb:
1909 case llvm::Triple::thumb:
1910 case llvm::Triple::thumbeb:
1911 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1912 StringRef Value = A->getValue();
1913 if (Value == "always" || Value == "never" || Value == "arm" ||
1914 Value == "thumb") {
1915 CmdArgs.push_back("-mllvm");
1916 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1917 } else {
1918 D.Diag(diag::err_drv_unsupported_option_argument)
1919 << A->getOption().getName() << Value;
1920 }
1921 }
1922 break;
1923 default:
1924 break;
1925 }
1926
1927 // When passing -I arguments to the assembler we sometimes need to
1928 // unconditionally take the next argument. For example, when parsing
1929 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1930 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1931 // arg after parsing the '-I' arg.
1932 bool TakeNextArg = false;
1933
1934 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
1935 const char *MipsTargetFeature = nullptr;
1936 for (const Arg *A :
1937 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1938 A->claim();
1939
1940 for (StringRef Value : A->getValues()) {
1941 if (TakeNextArg) {
1942 CmdArgs.push_back(Value.data());
1943 TakeNextArg = false;
1944 continue;
1945 }
1946
1947 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1948 Value == "-mbig-obj")
1949 continue; // LLVM handles bigobj automatically
1950
1951 switch (C.getDefaultToolChain().getArch()) {
1952 default:
1953 break;
1954 case llvm::Triple::thumb:
1955 case llvm::Triple::thumbeb:
1956 case llvm::Triple::arm:
1957 case llvm::Triple::armeb:
1958 if (Value == "-mthumb")
1959 // -mthumb has already been processed in ComputeLLVMTriple()
1960 // recognize but skip over here.
1961 continue;
1962 break;
1963 case llvm::Triple::mips:
1964 case llvm::Triple::mipsel:
1965 case llvm::Triple::mips64:
1966 case llvm::Triple::mips64el:
1967 if (Value == "--trap") {
1968 CmdArgs.push_back("-target-feature");
1969 CmdArgs.push_back("+use-tcc-in-div");
1970 continue;
1971 }
1972 if (Value == "--break") {
1973 CmdArgs.push_back("-target-feature");
1974 CmdArgs.push_back("-use-tcc-in-div");
1975 continue;
1976 }
1977 if (Value.startswith("-msoft-float")) {
1978 CmdArgs.push_back("-target-feature");
1979 CmdArgs.push_back("+soft-float");
1980 continue;
1981 }
1982 if (Value.startswith("-mhard-float")) {
1983 CmdArgs.push_back("-target-feature");
1984 CmdArgs.push_back("-soft-float");
1985 continue;
1986 }
1987
1988 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1989 .Case("-mips1", "+mips1")
1990 .Case("-mips2", "+mips2")
1991 .Case("-mips3", "+mips3")
1992 .Case("-mips4", "+mips4")
1993 .Case("-mips5", "+mips5")
1994 .Case("-mips32", "+mips32")
1995 .Case("-mips32r2", "+mips32r2")
1996 .Case("-mips32r3", "+mips32r3")
1997 .Case("-mips32r5", "+mips32r5")
1998 .Case("-mips32r6", "+mips32r6")
1999 .Case("-mips64", "+mips64")
2000 .Case("-mips64r2", "+mips64r2")
2001 .Case("-mips64r3", "+mips64r3")
2002 .Case("-mips64r5", "+mips64r5")
2003 .Case("-mips64r6", "+mips64r6")
2004 .Default(nullptr);
2005 if (MipsTargetFeature)
2006 continue;
2007 }
2008
2009 if (Value == "-force_cpusubtype_ALL") {
2010 // Do nothing, this is the default and we don't support anything else.
2011 } else if (Value == "-L") {
2012 CmdArgs.push_back("-msave-temp-labels");
2013 } else if (Value == "--fatal-warnings") {
2014 CmdArgs.push_back("-massembler-fatal-warnings");
2015 } else if (Value == "--noexecstack") {
2016 CmdArgs.push_back("-mnoexecstack");
2017 } else if (Value.startswith("-compress-debug-sections") ||
2018 Value.startswith("--compress-debug-sections") ||
2019 Value == "-nocompress-debug-sections" ||
2020 Value == "--nocompress-debug-sections") {
2021 CmdArgs.push_back(Value.data());
2022 } else if (Value == "-mrelax-relocations=yes" ||
2023 Value == "--mrelax-relocations=yes") {
2024 UseRelaxRelocations = true;
2025 } else if (Value == "-mrelax-relocations=no" ||
2026 Value == "--mrelax-relocations=no") {
2027 UseRelaxRelocations = false;
2028 } else if (Value.startswith("-I")) {
2029 CmdArgs.push_back(Value.data());
2030 // We need to consume the next argument if the current arg is a plain
2031 // -I. The next arg will be the include directory.
2032 if (Value == "-I")
2033 TakeNextArg = true;
2034 } else if (Value.startswith("-gdwarf-")) {
2035 // "-gdwarf-N" options are not cc1as options.
2036 unsigned DwarfVersion = DwarfVersionNum(Value);
2037 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2038 CmdArgs.push_back(Value.data());
2039 } else {
2040 RenderDebugEnablingArgs(Args, CmdArgs,
2041 codegenoptions::LimitedDebugInfo,
2042 DwarfVersion, llvm::DebuggerKind::Default);
2043 }
2044 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2045 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2046 // Do nothing, we'll validate it later.
2047 } else if (Value == "-defsym") {
2048 if (A->getNumValues() != 2) {
2049 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2050 break;
2051 }
2052 const char *S = A->getValue(1);
2053 auto Pair = StringRef(S).split('=');
2054 auto Sym = Pair.first;
2055 auto SVal = Pair.second;
2056
2057 if (Sym.empty() || SVal.empty()) {
2058 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2059 break;
2060 }
2061 int64_t IVal;
2062 if (SVal.getAsInteger(0, IVal)) {
2063 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2064 break;
2065 }
2066 CmdArgs.push_back(Value.data());
2067 TakeNextArg = true;
2068 } else {
2069 D.Diag(diag::err_drv_unsupported_option_argument)
2070 << A->getOption().getName() << Value;
2071 }
2072 }
2073 }
2074 if (UseRelaxRelocations)
2075 CmdArgs.push_back("--mrelax-relocations");
2076 if (MipsTargetFeature != nullptr) {
2077 CmdArgs.push_back("-target-feature");
2078 CmdArgs.push_back(MipsTargetFeature);
2079 }
2080}
2081
2082static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2083 bool OFastEnabled, const ArgList &Args,
2084 ArgStringList &CmdArgs) {
2085 // Handle various floating point optimization flags, mapping them to the
2086 // appropriate LLVM code generation flags. This is complicated by several
2087 // "umbrella" flags, so we do this by stepping through the flags incrementally
2088 // adjusting what we think is enabled/disabled, then at the end settting the
2089 // LLVM flags based on the final state.
2090 bool HonorINFs = true;
2091 bool HonorNaNs = true;
2092 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2093 bool MathErrno = TC.IsMathErrnoDefault();
2094 bool AssociativeMath = false;
2095 bool ReciprocalMath = false;
2096 bool SignedZeros = true;
2097 bool TrappingMath = true;
2098 StringRef DenormalFPMath = "";
2099 StringRef FPContract = "";
2100
2101 for (const Arg *A : Args) {
2102 switch (A->getOption().getID()) {
2103 // If this isn't an FP option skip the claim below
2104 default: continue;
2105
2106 // Options controlling individual features
2107 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2108 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2109 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2110 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2111 case options::OPT_fmath_errno: MathErrno = true; break;
2112 case options::OPT_fno_math_errno: MathErrno = false; break;
2113 case options::OPT_fassociative_math: AssociativeMath = true; break;
2114 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2115 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2116 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2117 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2118 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2119 case options::OPT_ftrapping_math: TrappingMath = true; break;
2120 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2121
2122 case options::OPT_fdenormal_fp_math_EQ:
2123 DenormalFPMath = A->getValue();
2124 break;
2125
2126 // Validate and pass through -fp-contract option.
2127 case options::OPT_ffp_contract: {
2128 StringRef Val = A->getValue();
2129 if (Val == "fast" || Val == "on" || Val == "off")
2130 FPContract = Val;
2131 else
2132 D.Diag(diag::err_drv_unsupported_option_argument)
2133 << A->getOption().getName() << Val;
2134 break;
2135 }
2136
2137 case options::OPT_ffinite_math_only:
2138 HonorINFs = false;
2139 HonorNaNs = false;
2140 break;
2141 case options::OPT_fno_finite_math_only:
2142 HonorINFs = true;
2143 HonorNaNs = true;
2144 break;
2145
2146 case options::OPT_funsafe_math_optimizations:
2147 AssociativeMath = true;
2148 ReciprocalMath = true;
2149 SignedZeros = false;
2150 TrappingMath = false;
2151 break;
2152 case options::OPT_fno_unsafe_math_optimizations:
2153 AssociativeMath = false;
2154 ReciprocalMath = false;
2155 SignedZeros = true;
2156 TrappingMath = true;
2157 // -fno_unsafe_math_optimizations restores default denormal handling
2158 DenormalFPMath = "";
2159 break;
2160
2161 case options::OPT_Ofast:
2162 // If -Ofast is the optimization level, then -ffast-math should be enabled
2163 if (!OFastEnabled)
2164 continue;
2165 LLVM_FALLTHROUGH[[clang::fallthrough]];
2166 case options::OPT_ffast_math:
2167 HonorINFs = false;
2168 HonorNaNs = false;
2169 MathErrno = false;
2170 AssociativeMath = true;
2171 ReciprocalMath = true;
2172 SignedZeros = false;
2173 TrappingMath = false;
2174 // If fast-math is set then set the fp-contract mode to fast.
2175 FPContract = "fast";
2176 break;
2177 case options::OPT_fno_fast_math:
2178 HonorINFs = true;
2179 HonorNaNs = true;
2180 // Turning on -ffast-math (with either flag) removes the need for
2181 // MathErrno. However, turning *off* -ffast-math merely restores the
2182 // toolchain default (which may be false).
2183 MathErrno = TC.IsMathErrnoDefault();
2184 AssociativeMath = false;
2185 ReciprocalMath = false;
2186 SignedZeros = true;
2187 TrappingMath = true;
2188 // -fno_fast_math restores default denormal and fpcontract handling
2189 DenormalFPMath = "";
2190 FPContract = "";
2191 break;
2192 }
2193
2194 // If we handled this option claim it
2195 A->claim();
2196 }
2197
2198 if (!HonorINFs)
2199 CmdArgs.push_back("-menable-no-infs");
2200
2201 if (!HonorNaNs)
2202 CmdArgs.push_back("-menable-no-nans");
2203
2204 if (MathErrno)
2205 CmdArgs.push_back("-fmath-errno");
2206
2207 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2208 !TrappingMath)
2209 CmdArgs.push_back("-menable-unsafe-fp-math");
2210
2211 if (!SignedZeros)
2212 CmdArgs.push_back("-fno-signed-zeros");
2213
2214 if (AssociativeMath && !SignedZeros && !TrappingMath)
2215 CmdArgs.push_back("-mreassociate");
2216
2217 if (ReciprocalMath)
2218 CmdArgs.push_back("-freciprocal-math");
2219
2220 if (!TrappingMath)
2221 CmdArgs.push_back("-fno-trapping-math");
2222
2223 if (!DenormalFPMath.empty())
2224 CmdArgs.push_back(
2225 Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2226
2227 if (!FPContract.empty())
2228 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2229
2230 ParseMRecip(D, Args, CmdArgs);
2231
2232 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2233 // individual features enabled by -ffast-math instead of the option itself as
2234 // that's consistent with gcc's behaviour.
2235 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2236 ReciprocalMath && !SignedZeros && !TrappingMath)
2237 CmdArgs.push_back("-ffast-math");
2238
2239 // Handle __FINITE_MATH_ONLY__ similarly.
2240 if (!HonorINFs && !HonorNaNs)
2241 CmdArgs.push_back("-ffinite-math-only");
2242
2243 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2244 CmdArgs.push_back("-mfpmath");
2245 CmdArgs.push_back(A->getValue());
2246 }
2247}
2248
2249static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2250 const llvm::Triple &Triple,
2251 const InputInfo &Input) {
2252 // Enable region store model by default.
2253 CmdArgs.push_back("-analyzer-store=region");
2254
2255 // Treat blocks as analysis entry points.
2256 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2257
2258 CmdArgs.push_back("-analyzer-eagerly-assume");
2259
2260 // Add default argument set.
2261 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2262 CmdArgs.push_back("-analyzer-checker=core");
2263 CmdArgs.push_back("-analyzer-checker=apiModeling");
2264
2265 if (!Triple.isWindowsMSVCEnvironment()) {
2266 CmdArgs.push_back("-analyzer-checker=unix");
2267 } else {
2268 // Enable "unix" checkers that also work on Windows.
2269 CmdArgs.push_back("-analyzer-checker=unix.API");
2270 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2271 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2272 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2273 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2274 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2275 }
2276
2277 // Disable some unix checkers for PS4.
2278 if (Triple.isPS4CPU()) {
2279 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2280 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2281 }
2282
2283 if (Triple.isOSDarwin())
2284 CmdArgs.push_back("-analyzer-checker=osx");
2285
2286 CmdArgs.push_back("-analyzer-checker=deadcode");
2287
2288 if (types::isCXX(Input.getType()))
2289 CmdArgs.push_back("-analyzer-checker=cplusplus");
2290
2291 if (!Triple.isPS4CPU()) {
2292 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2293 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2294 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2295 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2296 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2297 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2298 }
2299
2300 // Default nullability checks.
2301 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2302 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2303 }
2304
2305 // Set the output format. The default is plist, for (lame) historical reasons.
2306 CmdArgs.push_back("-analyzer-output");
2307 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2308 CmdArgs.push_back(A->getValue());
2309 else
2310 CmdArgs.push_back("plist");
2311
2312 // Disable the presentation of standard compiler warnings when using
2313 // --analyze. We only want to show static analyzer diagnostics or frontend
2314 // errors.
2315 CmdArgs.push_back("-w");
2316
2317 // Add -Xanalyzer arguments when running as analyzer.
2318 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2319}
2320
2321static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2322 ArgStringList &CmdArgs, bool KernelOrKext) {
2323 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2324
2325 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2326 // doesn't even have a stack!
2327 if (EffectiveTriple.isNVPTX())
2328 return;
2329
2330 // -stack-protector=0 is default.
2331 unsigned StackProtectorLevel = 0;
2332 unsigned DefaultStackProtectorLevel =
2333 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2334
2335 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2336 options::OPT_fstack_protector_all,
2337 options::OPT_fstack_protector_strong,
2338 options::OPT_fstack_protector)) {
2339 if (A->getOption().matches(options::OPT_fstack_protector))
2340 StackProtectorLevel =
2341 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2342 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2343 StackProtectorLevel = LangOptions::SSPStrong;
2344 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2345 StackProtectorLevel = LangOptions::SSPReq;
2346 } else {
2347 StackProtectorLevel = DefaultStackProtectorLevel;
2348 }
2349
2350 if (StackProtectorLevel) {
2351 CmdArgs.push_back("-stack-protector");
2352 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2353 }
2354
2355 // --param ssp-buffer-size=
2356 for (const Arg *A : Args.filtered(options::OPT__param)) {
2357 StringRef Str(A->getValue());
2358 if (Str.startswith("ssp-buffer-size=")) {
2359 if (StackProtectorLevel) {
2360 CmdArgs.push_back("-stack-protector-buffer-size");
2361 // FIXME: Verify the argument is a valid integer.
2362 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2363 }
2364 A->claim();
2365 }
2366 }
2367}
2368
2369static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2370 const unsigned ForwardedArguments[] = {
2371 options::OPT_cl_opt_disable,
2372 options::OPT_cl_strict_aliasing,
2373 options::OPT_cl_single_precision_constant,
2374 options::OPT_cl_finite_math_only,
2375 options::OPT_cl_kernel_arg_info,
2376 options::OPT_cl_unsafe_math_optimizations,
2377 options::OPT_cl_fast_relaxed_math,
2378 options::OPT_cl_mad_enable,
2379 options::OPT_cl_no_signed_zeros,
2380 options::OPT_cl_denorms_are_zero,
2381 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2382 };
2383
2384 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2385 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2386 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2387 }
2388
2389 for (const auto &Arg : ForwardedArguments)
2390 if (const auto *A = Args.getLastArg(Arg))
2391 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2392}
2393
2394static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2395 ArgStringList &CmdArgs) {
2396 bool ARCMTEnabled = false;
2397 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2398 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2399 options::OPT_ccc_arcmt_modify,
2400 options::OPT_ccc_arcmt_migrate)) {
2401 ARCMTEnabled = true;
2402 switch (A->getOption().getID()) {
2403 default: llvm_unreachable("missed a case")::llvm::llvm_unreachable_internal("missed a case", "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 2403)
;
2404 case options::OPT_ccc_arcmt_check:
2405 CmdArgs.push_back("-arcmt-check");
2406 break;
2407 case options::OPT_ccc_arcmt_modify:
2408 CmdArgs.push_back("-arcmt-modify");
2409 break;
2410 case options::OPT_ccc_arcmt_migrate:
2411 CmdArgs.push_back("-arcmt-migrate");
2412 CmdArgs.push_back("-mt-migrate-directory");
2413 CmdArgs.push_back(A->getValue());
2414
2415 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2416 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2417 break;
2418 }
2419 }
2420 } else {
2421 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2422 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2423 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2424 }
2425
2426 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2427 if (ARCMTEnabled)
2428 D.Diag(diag::err_drv_argument_not_allowed_with)
2429 << A->getAsString(Args) << "-ccc-arcmt-migrate";
2430
2431 CmdArgs.push_back("-mt-migrate-directory");
2432 CmdArgs.push_back(A->getValue());
2433
2434 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2435 options::OPT_objcmt_migrate_subscripting,
2436 options::OPT_objcmt_migrate_property)) {
2437 // None specified, means enable them all.
2438 CmdArgs.push_back("-objcmt-migrate-literals");
2439 CmdArgs.push_back("-objcmt-migrate-subscripting");
2440 CmdArgs.push_back("-objcmt-migrate-property");
2441 } else {
2442 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2443 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2444 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2445 }
2446 } else {
2447 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2448 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2449 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2450 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2451 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2452 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2453 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2454 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2455 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2456 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2457 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2458 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2459 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2460 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2461 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2462 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2463 }
2464}
2465
2466static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2467 const ArgList &Args, ArgStringList &CmdArgs) {
2468 // -fbuiltin is default unless -mkernel is used.
2469 bool UseBuiltins =
2470 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2471 !Args.hasArg(options::OPT_mkernel));
2472 if (!UseBuiltins)
2473 CmdArgs.push_back("-fno-builtin");
2474
2475 // -ffreestanding implies -fno-builtin.
2476 if (Args.hasArg(options::OPT_ffreestanding))
2477 UseBuiltins = false;
2478
2479 // Process the -fno-builtin-* options.
2480 for (const auto &Arg : Args) {
2481 const Option &O = Arg->getOption();
2482 if (!O.matches(options::OPT_fno_builtin_))
2483 continue;
2484
2485 Arg->claim();
2486
2487 // If -fno-builtin is specified, then there's no need to pass the option to
2488 // the frontend.
2489 if (!UseBuiltins)
2490 continue;
2491
2492 StringRef FuncName = Arg->getValue();
2493 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2494 }
2495
2496 // le32-specific flags:
2497 // -fno-math-builtin: clang should not convert math builtins to intrinsics
2498 // by default.
2499 if (TC.getArch() == llvm::Triple::le32)
2500 CmdArgs.push_back("-fno-math-builtin");
2501}
2502
2503void Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
2504 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2505 llvm::sys::path::append(Result, "org.llvm.clang.");
2506 appendUserToPath(Result);
2507 llvm::sys::path::append(Result, "ModuleCache");
2508}
2509
2510static void RenderModulesOptions(Compilation &C, const Driver &D,
2511 const ArgList &Args, const InputInfo &Input,
2512 const InputInfo &Output,
2513 ArgStringList &CmdArgs, bool &HaveModules) {
2514 // -fmodules enables the use of precompiled modules (off by default).
2515 // Users can pass -fno-cxx-modules to turn off modules support for
2516 // C++/Objective-C++ programs.
2517 bool HaveClangModules = false;
2518 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2519 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2520 options::OPT_fno_cxx_modules, true);
2521 if (AllowedInCXX || !types::isCXX(Input.getType())) {
2522 CmdArgs.push_back("-fmodules");
2523 HaveClangModules = true;
2524 }
2525 }
2526
2527 HaveModules = HaveClangModules;
2528 if (Args.hasArg(options::OPT_fmodules_ts)) {
2529 CmdArgs.push_back("-fmodules-ts");
2530 HaveModules = true;
2531 }
2532
2533 // -fmodule-maps enables implicit reading of module map files. By default,
2534 // this is enabled if we are using Clang's flavor of precompiled modules.
2535 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2536 options::OPT_fno_implicit_module_maps, HaveClangModules))
2537 CmdArgs.push_back("-fimplicit-module-maps");
2538
2539 // -fmodules-decluse checks that modules used are declared so (off by default)
2540 if (Args.hasFlag(options::OPT_fmodules_decluse,
2541 options::OPT_fno_modules_decluse, false))
2542 CmdArgs.push_back("-fmodules-decluse");
2543
2544 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2545 // all #included headers are part of modules.
2546 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2547 options::OPT_fno_modules_strict_decluse, false))
2548 CmdArgs.push_back("-fmodules-strict-decluse");
2549
2550 // -fno-implicit-modules turns off implicitly compiling modules on demand.
2551 if (!Args.hasFlag(options::OPT_fimplicit_modules,
2552 options::OPT_fno_implicit_modules, HaveClangModules)) {
2553 if (HaveModules)
2554 CmdArgs.push_back("-fno-implicit-modules");
2555 } else if (HaveModules) {
2556 // -fmodule-cache-path specifies where our implicitly-built module files
2557 // should be written.
2558 SmallString<128> Path;
2559 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2560 Path = A->getValue();
2561
2562 if (C.isForDiagnostics()) {
2563 // When generating crash reports, we want to emit the modules along with
2564 // the reproduction sources, so we ignore any provided module path.
2565 Path = Output.getFilename();
2566 llvm::sys::path::replace_extension(Path, ".cache");
2567 llvm::sys::path::append(Path, "modules");
2568 } else if (Path.empty()) {
2569 // No module path was provided: use the default.
2570 Driver::getDefaultModuleCachePath(Path);
2571 }
2572
2573 const char Arg[] = "-fmodules-cache-path=";
2574 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2575 CmdArgs.push_back(Args.MakeArgString(Path));
2576 }
2577
2578 if (HaveModules) {
2579 // -fprebuilt-module-path specifies where to load the prebuilt module files.
2580 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2581 CmdArgs.push_back(Args.MakeArgString(
2582 std::string("-fprebuilt-module-path=") + A->getValue()));
2583 A->claim();
2584 }
2585 }
2586
2587 // -fmodule-name specifies the module that is currently being built (or
2588 // used for header checking by -fmodule-maps).
2589 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2590
2591 // -fmodule-map-file can be used to specify files containing module
2592 // definitions.
2593 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2594
2595 // -fbuiltin-module-map can be used to load the clang
2596 // builtin headers modulemap file.
2597 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2598 SmallString<128> BuiltinModuleMap(D.ResourceDir);
2599 llvm::sys::path::append(BuiltinModuleMap, "include");
2600 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2601 if (llvm::sys::fs::exists(BuiltinModuleMap))
2602 CmdArgs.push_back(
2603 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2604 }
2605
2606 // The -fmodule-file=<name>=<file> form specifies the mapping of module
2607 // names to precompiled module files (the module is loaded only if used).
2608 // The -fmodule-file=<file> form can be used to unconditionally load
2609 // precompiled module files (whether used or not).
2610 if (HaveModules)
2611 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2612 else
2613 Args.ClaimAllArgs(options::OPT_fmodule_file);
2614
2615 // When building modules and generating crashdumps, we need to dump a module
2616 // dependency VFS alongside the output.
2617 if (HaveClangModules && C.isForDiagnostics()) {
2618 SmallString<128> VFSDir(Output.getFilename());
2619 llvm::sys::path::replace_extension(VFSDir, ".cache");
2620 // Add the cache directory as a temp so the crash diagnostics pick it up.
2621 C.addTempFile(Args.MakeArgString(VFSDir));
2622
2623 llvm::sys::path::append(VFSDir, "vfs");
2624 CmdArgs.push_back("-module-dependency-dir");
2625 CmdArgs.push_back(Args.MakeArgString(VFSDir));
2626 }
2627
2628 if (HaveClangModules)
2629 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2630
2631 // Pass through all -fmodules-ignore-macro arguments.
2632 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2633 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2634 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2635
2636 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2637
2638 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2639 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2640 D.Diag(diag::err_drv_argument_not_allowed_with)
2641 << A->getAsString(Args) << "-fbuild-session-timestamp";
2642
2643 llvm::sys::fs::file_status Status;
2644 if (llvm::sys::fs::status(A->getValue(), Status))
2645 D.Diag(diag::err_drv_no_such_file) << A->getValue();
2646 CmdArgs.push_back(
2647 Args.MakeArgString("-fbuild-session-timestamp=" +
2648 Twine((uint64_t)Status.getLastModificationTime()
2649 .time_since_epoch()
2650 .count())));
2651 }
2652
2653 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2654 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2655 options::OPT_fbuild_session_file))
2656 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2657
2658 Args.AddLastArg(CmdArgs,
2659 options::OPT_fmodules_validate_once_per_build_session);
2660 }
2661
2662 Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers);
2663 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2664}
2665
2666static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2667 ArgStringList &CmdArgs) {
2668 // -fsigned-char is default.
2669 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2670 options::OPT_fno_signed_char,
2671 options::OPT_funsigned_char,
2672 options::OPT_fno_unsigned_char)) {
2673 if (A->getOption().matches(options::OPT_funsigned_char) ||
2674 A->getOption().matches(options::OPT_fno_signed_char)) {
2675 CmdArgs.push_back("-fno-signed-char");
2676 }
2677 } else if (!isSignedCharDefault(T)) {
2678 CmdArgs.push_back("-fno-signed-char");
2679 }
2680
2681 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2682 options::OPT_fno_short_wchar)) {
2683 if (A->getOption().matches(options::OPT_fshort_wchar)) {
2684 CmdArgs.push_back("-fwchar-type=short");
2685 CmdArgs.push_back("-fno-signed-wchar");
2686 } else {
2687 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2688 CmdArgs.push_back("-fwchar-type=int");
2689 if (IsARM && !(T.isOSWindows() || T.getOS() == llvm::Triple::NetBSD ||
2690 T.getOS() == llvm::Triple::OpenBSD))
2691 CmdArgs.push_back("-fno-signed-wchar");
2692 else
2693 CmdArgs.push_back("-fsigned-wchar");
2694 }
2695 }
2696}
2697
2698static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2699 const llvm::Triple &T, const ArgList &Args,
2700 ObjCRuntime &Runtime, bool InferCovariantReturns,
2701 const InputInfo &Input, ArgStringList &CmdArgs) {
2702 const llvm::Triple::ArchType Arch = TC.getArch();
2703
2704 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2705 // is the default. Except for deployment target of 10.5, next runtime is
2706 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2707 if (Runtime.isNonFragile()) {
2708 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2709 options::OPT_fno_objc_legacy_dispatch,
2710 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2711 if (TC.UseObjCMixedDispatch())
2712 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2713 else
2714 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2715 }
2716 }
2717
2718 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2719 // to do Array/Dictionary subscripting by default.
2720 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2721 !T.isMacOSXVersionLT(10, 7) &&
2722 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2723 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2724
2725 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2726 // NOTE: This logic is duplicated in ToolChains.cpp.
2727 if (isObjCAutoRefCount(Args)) {
2728 TC.CheckObjCARC();
2729
2730 CmdArgs.push_back("-fobjc-arc");
2731
2732 // FIXME: It seems like this entire block, and several around it should be
2733 // wrapped in isObjC, but for now we just use it here as this is where it
2734 // was being used previously.
2735 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2736 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2737 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2738 else
2739 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2740 }
2741
2742 // Allow the user to enable full exceptions code emission.
2743 // We default off for Objective-C, on for Objective-C++.
2744 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2745 options::OPT_fno_objc_arc_exceptions,
2746 /*default=*/types::isCXX(Input.getType())))
2747 CmdArgs.push_back("-fobjc-arc-exceptions");
2748 }
2749
2750 // Silence warning for full exception code emission options when explicitly
2751 // set to use no ARC.
2752 if (Args.hasArg(options::OPT_fno_objc_arc)) {
2753 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2754 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2755 }
2756
2757 // -fobjc-infer-related-result-type is the default, except in the Objective-C
2758 // rewriter.
2759 if (InferCovariantReturns)
2760 CmdArgs.push_back("-fno-objc-infer-related-result-type");
2761
2762 // Pass down -fobjc-weak or -fno-objc-weak if present.
2763 if (types::isObjC(Input.getType())) {
2764 auto WeakArg =
2765 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2766 if (!WeakArg) {
2767 // nothing to do
2768 } else if (!Runtime.allowsWeak()) {
2769 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2770 D.Diag(diag::err_objc_weak_unsupported);
2771 } else {
2772 WeakArg->render(Args, CmdArgs);
2773 }
2774 }
2775}
2776
2777static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2778 ArgStringList &CmdArgs) {
2779 bool CaretDefault = true;
2780 bool ColumnDefault = true;
2781
2782 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2783 options::OPT__SLASH_diagnostics_column,
2784 options::OPT__SLASH_diagnostics_caret)) {
2785 switch (A->getOption().getID()) {
2786 case options::OPT__SLASH_diagnostics_caret:
2787 CaretDefault = true;
2788 ColumnDefault = true;
2789 break;
2790 case options::OPT__SLASH_diagnostics_column:
2791 CaretDefault = false;
2792 ColumnDefault = true;
2793 break;
2794 case options::OPT__SLASH_diagnostics_classic:
2795 CaretDefault = false;
2796 ColumnDefault = false;
2797 break;
2798 }
2799 }
2800
2801 // -fcaret-diagnostics is default.
2802 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2803 options::OPT_fno_caret_diagnostics, CaretDefault))
2804 CmdArgs.push_back("-fno-caret-diagnostics");
2805
2806 // -fdiagnostics-fixit-info is default, only pass non-default.
2807 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2808 options::OPT_fno_diagnostics_fixit_info))
2809 CmdArgs.push_back("-fno-diagnostics-fixit-info");
2810
2811 // Enable -fdiagnostics-show-option by default.
2812 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2813 options::OPT_fno_diagnostics_show_option))
2814 CmdArgs.push_back("-fdiagnostics-show-option");
2815
2816 if (const Arg *A =
2817 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2818 CmdArgs.push_back("-fdiagnostics-show-category");
2819 CmdArgs.push_back(A->getValue());
2820 }
2821
2822 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2823 options::OPT_fno_diagnostics_show_hotness, false))
2824 CmdArgs.push_back("-fdiagnostics-show-hotness");
2825
2826 if (const Arg *A =
2827 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2828 std::string Opt =
2829 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
2830 CmdArgs.push_back(Args.MakeArgString(Opt));
2831 }
2832
2833 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
2834 CmdArgs.push_back("-fdiagnostics-format");
2835 CmdArgs.push_back(A->getValue());
2836 }
2837
2838 if (const Arg *A = Args.getLastArg(
2839 options::OPT_fdiagnostics_show_note_include_stack,
2840 options::OPT_fno_diagnostics_show_note_include_stack)) {
2841 const Option &O = A->getOption();
2842 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
2843 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
2844 else
2845 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
2846 }
2847
2848 // Color diagnostics are parsed by the driver directly from argv and later
2849 // re-parsed to construct this job; claim any possible color diagnostic here
2850 // to avoid warn_drv_unused_argument and diagnose bad
2851 // OPT_fdiagnostics_color_EQ values.
2852 for (const Arg *A : Args) {
2853 const Option &O = A->getOption();
2854 if (!O.matches(options::OPT_fcolor_diagnostics) &&
2855 !O.matches(options::OPT_fdiagnostics_color) &&
2856 !O.matches(options::OPT_fno_color_diagnostics) &&
2857 !O.matches(options::OPT_fno_diagnostics_color) &&
2858 !O.matches(options::OPT_fdiagnostics_color_EQ))
2859 continue;
2860
2861 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
2862 StringRef Value(A->getValue());
2863 if (Value != "always" && Value != "never" && Value != "auto")
2864 D.Diag(diag::err_drv_clang_unsupported)
2865 << ("-fdiagnostics-color=" + Value).str();
2866 }
2867 A->claim();
2868 }
2869
2870 if (D.getDiags().getDiagnosticOptions().ShowColors)
2871 CmdArgs.push_back("-fcolor-diagnostics");
2872
2873 if (Args.hasArg(options::OPT_fansi_escape_codes))
2874 CmdArgs.push_back("-fansi-escape-codes");
2875
2876 if (!Args.hasFlag(options::OPT_fshow_source_location,
2877 options::OPT_fno_show_source_location))
2878 CmdArgs.push_back("-fno-show-source-location");
2879
2880 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
2881 CmdArgs.push_back("-fdiagnostics-absolute-paths");
2882
2883 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
2884 ColumnDefault))
2885 CmdArgs.push_back("-fno-show-column");
2886
2887 if (!Args.hasFlag(options::OPT_fspell_checking,
2888 options::OPT_fno_spell_checking))
2889 CmdArgs.push_back("-fno-spell-checking");
2890}
2891
2892static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
2893 const llvm::Triple &T, const ArgList &Args,
2894 bool EmitCodeView, bool IsWindowsMSVC,
2895 ArgStringList &CmdArgs,
2896 codegenoptions::DebugInfoKind &DebugInfoKind,
2897 const Arg *&SplitDWARFArg) {
2898 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
2899 options::OPT_fno_debug_info_for_profiling, false))
2900 CmdArgs.push_back("-fdebug-info-for-profiling");
2901
2902 // The 'g' groups options involve a somewhat intricate sequence of decisions
2903 // about what to pass from the driver to the frontend, but by the time they
2904 // reach cc1 they've been factored into three well-defined orthogonal choices:
2905 // * what level of debug info to generate
2906 // * what dwarf version to write
2907 // * what debugger tuning to use
2908 // This avoids having to monkey around further in cc1 other than to disable
2909 // codeview if not running in a Windows environment. Perhaps even that
2910 // decision should be made in the driver as well though.
2911 unsigned DWARFVersion = 0;
2912 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
2913
2914 bool SplitDWARFInlining =
2915 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2916 options::OPT_fno_split_dwarf_inlining, true);
2917
2918 Args.ClaimAllArgs(options::OPT_g_Group);
2919
2920 SplitDWARFArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2921
2922 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2923 // If the last option explicitly specified a debug-info level, use it.
2924 if (A->getOption().matches(options::OPT_gN_Group)) {
2925 DebugInfoKind = DebugLevelToInfoKind(*A);
2926 // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2927 // But -gsplit-dwarf is not a g_group option, hence we have to check the
2928 // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
2929 // This gets a bit more complicated if you've disabled inline info in the
2930 // skeleton CUs (SplitDWARFInlining) - then there's value in composing
2931 // split-dwarf and line-tables-only, so let those compose naturally in
2932 // that case.
2933 // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
2934 if (SplitDWARFArg) {
2935 if (A->getIndex() > SplitDWARFArg->getIndex()) {
2936 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2937 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2938 SplitDWARFInlining))
2939 SplitDWARFArg = nullptr;
2940 } else if (SplitDWARFInlining)
2941 DebugInfoKind = codegenoptions::NoDebugInfo;
2942 }
2943 } else {
2944 // For any other 'g' option, use Limited.
2945 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2946 }
2947 }
2948
2949 // If a debugger tuning argument appeared, remember it.
2950 if (const Arg *A =
2951 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
2952 if (A->getOption().matches(options::OPT_glldb))
2953 DebuggerTuning = llvm::DebuggerKind::LLDB;
2954 else if (A->getOption().matches(options::OPT_gsce))
2955 DebuggerTuning = llvm::DebuggerKind::SCE;
2956 else
2957 DebuggerTuning = llvm::DebuggerKind::GDB;
2958 }
2959
2960 // If a -gdwarf argument appeared, remember it.
2961 if (const Arg *A =
2962 Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2963 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2964 DWARFVersion = DwarfVersionNum(A->getSpelling());
2965
2966 // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2967 // argument parsing.
2968 if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
2969 // DWARFVersion remains at 0 if no explicit choice was made.
2970 CmdArgs.push_back("-gcodeview");
2971 } else if (DWARFVersion == 0 &&
2972 DebugInfoKind != codegenoptions::NoDebugInfo) {
2973 DWARFVersion = TC.GetDefaultDwarfVersion();
2974 }
2975
2976 // We ignore flag -gstrict-dwarf for now.
2977 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
2978 Args.ClaimAllArgs(options::OPT_g_flags_Group);
2979
2980 // Column info is included by default for everything except SCE and CodeView.
2981 // Clang doesn't track end columns, just starting columns, which, in theory,
2982 // is fine for CodeView (and PDB). In practice, however, the Microsoft
2983 // debuggers don't handle missing end columns well, so it's better not to
2984 // include any column info.
2985 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2986 /*Default=*/!(IsWindowsMSVC && EmitCodeView) &&
2987 DebuggerTuning != llvm::DebuggerKind::SCE))
2988 CmdArgs.push_back("-dwarf-column-info");
2989
2990 // FIXME: Move backend command line options to the module.
2991 // If -gline-tables-only is the last option it wins.
2992 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
2993 Args.hasArg(options::OPT_gmodules)) {
2994 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2995 CmdArgs.push_back("-dwarf-ext-refs");
2996 CmdArgs.push_back("-fmodule-format=obj");
2997 }
2998
2999 // -gsplit-dwarf should turn on -g and enable the backend dwarf
3000 // splitting and extraction.
3001 // FIXME: Currently only works on Linux.
3002 if (T.isOSLinux()) {
3003 if (!SplitDWARFInlining)
3004 CmdArgs.push_back("-fno-split-dwarf-inlining");
3005
3006 if (SplitDWARFArg) {
3007 if (DebugInfoKind == codegenoptions::NoDebugInfo)
3008 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3009 CmdArgs.push_back("-enable-split-dwarf");
3010 }
3011 }
3012
3013 // After we've dealt with all combinations of things that could
3014 // make DebugInfoKind be other than None or DebugLineTablesOnly,
3015 // figure out if we need to "upgrade" it to standalone debug info.
3016 // We parse these two '-f' options whether or not they will be used,
3017 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3018 bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
3019 options::OPT_fno_standalone_debug,
3020 TC.GetDefaultStandaloneDebug());
3021 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3022 DebugInfoKind = codegenoptions::FullDebugInfo;
3023
3024 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3025 DebuggerTuning);
3026
3027 // -fdebug-macro turns on macro debug info generation.
3028 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3029 false))
3030 CmdArgs.push_back("-debug-info-macro");
3031
3032 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3033 if (Args.hasArg(options::OPT_ggnu_pubnames))
3034 CmdArgs.push_back("-ggnu-pubnames");
3035
3036 // -gdwarf-aranges turns on the emission of the aranges section in the
3037 // backend.
3038 // Always enabled for SCE tuning.
3039 if (Args.hasArg(options::OPT_gdwarf_aranges) ||
3040 DebuggerTuning == llvm::DebuggerKind::SCE) {
3041 CmdArgs.push_back("-backend-option");
3042 CmdArgs.push_back("-generate-arange-section");
3043 }
3044
3045 if (Args.hasFlag(options::OPT_fdebug_types_section,
3046 options::OPT_fno_debug_types_section, false)) {
3047 CmdArgs.push_back("-backend-option");
3048 CmdArgs.push_back("-generate-type-units");
3049 }
3050
3051 // Decide how to render forward declarations of template instantiations.
3052 // SCE wants full descriptions, others just get them in the name.
3053 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3054 CmdArgs.push_back("-debug-forward-template-params");
3055
3056 // Do we need to explicitly import anonymous namespaces into the parent scope?
3057 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3058 CmdArgs.push_back("-dwarf-explicit-import");
3059
3060 RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
3061}
3062
3063void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3064 const InputInfo &Output, const InputInfoList &Inputs,
3065 const ArgList &Args, const char *LinkingOutput) const {
3066 const llvm::Triple &RawTriple = getToolChain().getTriple();
3067 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
3068 const std::string &TripleStr = Triple.getTriple();
3069
3070 bool KernelOrKext =
3071 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3072 const Driver &D = getToolChain().getDriver();
3073 ArgStringList CmdArgs;
3074
3075 // Check number of inputs for sanity. We need at least one input.
3076 assert(Inputs.size() >= 1 && "Must have at least one input.")(static_cast <bool> (Inputs.size() >= 1 && "Must have at least one input."
) ? void (0) : __assert_fail ("Inputs.size() >= 1 && \"Must have at least one input.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3076, __extension__ __PRETTY_FUNCTION__))
;
3077 const InputInfo &Input = Inputs[0];
3078 // CUDA compilation may have multiple inputs (source file + results of
3079 // device-side compilations). OpenMP device jobs also take the host IR as a
3080 // second input. All other jobs are expected to have exactly one
3081 // input.
3082 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3083 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3084 assert((IsCuda || (IsOpenMPDevice && Inputs.size() == 2) ||(static_cast <bool> ((IsCuda || (IsOpenMPDevice &&
Inputs.size() == 2) || Inputs.size() == 1) && "Unable to handle multiple inputs."
) ? void (0) : __assert_fail ("(IsCuda || (IsOpenMPDevice && Inputs.size() == 2) || Inputs.size() == 1) && \"Unable to handle multiple inputs.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3086, __extension__ __PRETTY_FUNCTION__))
3085 Inputs.size() == 1) &&(static_cast <bool> ((IsCuda || (IsOpenMPDevice &&
Inputs.size() == 2) || Inputs.size() == 1) && "Unable to handle multiple inputs."
) ? void (0) : __assert_fail ("(IsCuda || (IsOpenMPDevice && Inputs.size() == 2) || Inputs.size() == 1) && \"Unable to handle multiple inputs.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3086, __extension__ __PRETTY_FUNCTION__))
3086 "Unable to handle multiple inputs.")(static_cast <bool> ((IsCuda || (IsOpenMPDevice &&
Inputs.size() == 2) || Inputs.size() == 1) && "Unable to handle multiple inputs."
) ? void (0) : __assert_fail ("(IsCuda || (IsOpenMPDevice && Inputs.size() == 2) || Inputs.size() == 1) && \"Unable to handle multiple inputs.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3086, __extension__ __PRETTY_FUNCTION__))
;
3087
3088 const llvm::Triple *AuxTriple =
3089 IsCuda ? getToolChain().getAuxTriple() : nullptr;
3090
3091 bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3092 bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3093 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3094 bool IsIAMCU = RawTriple.isOSIAMCU();
3095
3096 // Adjust IsWindowsXYZ for CUDA compilations. Even when compiling in device
3097 // mode (i.e., getToolchain().getTriple() is NVPTX, not Windows), we need to
3098 // pass Windows-specific flags to cc1.
3099 if (IsCuda) {
3100 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3101 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
Value stored to 'IsWindowsGNU' is never read
3102 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
3103 }
3104
3105 // C++ is not supported for IAMCU.
3106 if (IsIAMCU && types::isCXX(Input.getType()))
3107 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3108
3109 // Invoke ourselves in -cc1 mode.
3110 //
3111 // FIXME: Implement custom jobs for internal actions.
3112 CmdArgs.push_back("-cc1");
3113
3114 // Add the "effective" target triple.
3115 CmdArgs.push_back("-triple");
3116 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3117
3118 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3119 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3120 Args.ClaimAllArgs(options::OPT_MJ);
3121 }
3122
3123 if (IsCuda) {
3124 // We have to pass the triple of the host if compiling for a CUDA device and
3125 // vice-versa.
3126 std::string NormalizedTriple;
3127 if (JA.isDeviceOffloading(Action::OFK_Cuda))
3128 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3129 ->getTriple()
3130 .normalize();
3131 else
3132 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3133 ->getTriple()
3134 .normalize();
3135
3136 CmdArgs.push_back("-aux-triple");
3137 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3138 }
3139
3140 if (IsOpenMPDevice) {
3141 // We have to pass the triple of the host if compiling for an OpenMP device.
3142 std::string NormalizedTriple =
3143 C.getSingleOffloadToolChain<Action::OFK_Host>()
3144 ->getTriple()
3145 .normalize();
3146 CmdArgs.push_back("-aux-triple");
3147 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3148 }
3149
3150 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3151 Triple.getArch() == llvm::Triple::thumb)) {
3152 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3153 unsigned Version;
3154 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3155 if (Version < 7)
3156 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3157 << TripleStr;
3158 }
3159
3160 // Push all default warning arguments that are specific to
3161 // the given target. These come before user provided warning options
3162 // are provided.
3163 getToolChain().addClangWarningOptions(CmdArgs);
3164
3165 // Select the appropriate action.
3166 RewriteKind rewriteKind = RK_None;
3167
3168 if (isa<AnalyzeJobAction>(JA)) {
3169 assert(JA.getType() == types::TY_Plist && "Invalid output type.")(static_cast <bool> (JA.getType() == types::TY_Plist &&
"Invalid output type.") ? void (0) : __assert_fail ("JA.getType() == types::TY_Plist && \"Invalid output type.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3169, __extension__ __PRETTY_FUNCTION__))
;
3170 CmdArgs.push_back("-analyze");
3171 } else if (isa<MigrateJobAction>(JA)) {
3172 CmdArgs.push_back("-migrate");
3173 } else if (isa<PreprocessJobAction>(JA)) {
3174 if (Output.getType() == types::TY_Dependencies)
3175 CmdArgs.push_back("-Eonly");
3176 else {
3177 CmdArgs.push_back("-E");
3178 if (Args.hasArg(options::OPT_rewrite_objc) &&
3179 !Args.hasArg(options::OPT_g_Group))
3180 CmdArgs.push_back("-P");
3181 }
3182 } else if (isa<AssembleJobAction>(JA)) {
3183 CmdArgs.push_back("-emit-obj");
3184
3185 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3186
3187 // Also ignore explicit -force_cpusubtype_ALL option.
3188 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3189 } else if (isa<PrecompileJobAction>(JA)) {
3190 // Use PCH if the user requested it.
3191 bool UsePCH = D.CCCUsePCH;
3192
3193 if (JA.getType() == types::TY_Nothing)
3194 CmdArgs.push_back("-fsyntax-only");
3195 else if (JA.getType() == types::TY_ModuleFile)
3196 CmdArgs.push_back("-emit-module-interface");
3197 else if (UsePCH)
3198 CmdArgs.push_back("-emit-pch");
3199 else
3200 CmdArgs.push_back("-emit-pth");
3201 } else if (isa<VerifyPCHJobAction>(JA)) {
3202 CmdArgs.push_back("-verify-pch");
3203 } else {
3204 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&(static_cast <bool> ((isa<CompileJobAction>(JA) ||
isa<BackendJobAction>(JA)) && "Invalid action for clang tool."
) ? void (0) : __assert_fail ("(isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) && \"Invalid action for clang tool.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3205, __extension__ __PRETTY_FUNCTION__))
3205 "Invalid action for clang tool.")(static_cast <bool> ((isa<CompileJobAction>(JA) ||
isa<BackendJobAction>(JA)) && "Invalid action for clang tool."
) ? void (0) : __assert_fail ("(isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) && \"Invalid action for clang tool.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3205, __extension__ __PRETTY_FUNCTION__))
;
3206 if (JA.getType() == types::TY_Nothing) {
3207 CmdArgs.push_back("-fsyntax-only");
3208 } else if (JA.getType() == types::TY_LLVM_IR ||
3209 JA.getType() == types::TY_LTO_IR) {
3210 CmdArgs.push_back("-emit-llvm");
3211 } else if (JA.getType() == types::TY_LLVM_BC ||
3212 JA.getType() == types::TY_LTO_BC) {
3213 CmdArgs.push_back("-emit-llvm-bc");
3214 } else if (JA.getType() == types::TY_PP_Asm) {
3215 CmdArgs.push_back("-S");
3216 } else if (JA.getType() == types::TY_AST) {
3217 CmdArgs.push_back("-emit-pch");
3218 } else if (JA.getType() == types::TY_ModuleFile) {
3219 CmdArgs.push_back("-module-file-info");
3220 } else if (JA.getType() == types::TY_RewrittenObjC) {
3221 CmdArgs.push_back("-rewrite-objc");
3222 rewriteKind = RK_NonFragile;
3223 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3224 CmdArgs.push_back("-rewrite-objc");
3225 rewriteKind = RK_Fragile;
3226 } else {
3227 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!")(static_cast <bool> (JA.getType() == types::TY_PP_Asm &&
"Unexpected output type!") ? void (0) : __assert_fail ("JA.getType() == types::TY_PP_Asm && \"Unexpected output type!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3227, __extension__ __PRETTY_FUNCTION__))
;
3228 }
3229
3230 // Preserve use-list order by default when emitting bitcode, so that
3231 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3232 // same result as running passes here. For LTO, we don't need to preserve
3233 // the use-list order, since serialization to bitcode is part of the flow.
3234 if (JA.getType() == types::TY_LLVM_BC)
3235 CmdArgs.push_back("-emit-llvm-uselists");
3236
3237 if (D.isUsingLTO()) {
3238 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3239
3240 // The Darwin and PS4 linkers currently use the legacy LTO API, which
3241 // does not support LTO unit features (CFI, whole program vtable opt)
3242 // under ThinLTO.
3243 if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3244 D.getLTOMode() == LTOK_Full)
3245 CmdArgs.push_back("-flto-unit");
3246 }
3247 }
3248
3249 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3250 if (!types::isLLVMIR(Input.getType()))
3251 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3252 << "-x ir";
3253 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3254 }
3255
3256 // Embed-bitcode option.
3257 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3258 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3259 // Add flags implied by -fembed-bitcode.
3260 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3261 // Disable all llvm IR level optimizations.
3262 CmdArgs.push_back("-disable-llvm-passes");
3263 }
3264 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
3265 CmdArgs.push_back("-fembed-bitcode=marker");
3266
3267 // We normally speed up the clang process a bit by skipping destructors at
3268 // exit, but when we're generating diagnostics we can rely on some of the
3269 // cleanup.
3270 if (!C.isForDiagnostics())
3271 CmdArgs.push_back("-disable-free");
3272
3273#ifdef NDEBUG
3274 const bool IsAssertBuild = false;
3275#else
3276 const bool IsAssertBuild = true;
3277#endif
3278
3279 // Disable the verification pass in -asserts builds.
3280 if (!IsAssertBuild)
3281 CmdArgs.push_back("-disable-llvm-verifier");
3282
3283 // Discard value names in assert builds unless otherwise specified.
3284 if (const Arg *A = Args.getLastArg(options::OPT_fdiscard_value_names,
3285 options::OPT_fno_discard_value_names)) {
3286 if (A->getOption().matches(options::OPT_fdiscard_value_names))
3287 CmdArgs.push_back("-discard-value-names");
3288 } else if (!IsAssertBuild)
3289 CmdArgs.push_back("-discard-value-names");
3290
3291 // Set the main file name, so that debug info works even with
3292 // -save-temps.
3293 CmdArgs.push_back("-main-file-name");
3294 CmdArgs.push_back(getBaseInputName(Args, Input));
3295
3296 // Some flags which affect the language (via preprocessor
3297 // defines).
3298 if (Args.hasArg(options::OPT_static))
3299 CmdArgs.push_back("-static-define");
3300
3301 if (isa<AnalyzeJobAction>(JA))
3302 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3303
3304 CheckCodeGenerationOptions(D, Args);
3305
3306 llvm::Reloc::Model RelocationModel;
3307 unsigned PICLevel;
3308 bool IsPIE;
3309 std::tie(RelocationModel, PICLevel, IsPIE) =
3310 ParsePICArgs(getToolChain(), Args);
3311
3312 const char *RMName = RelocationModelName(RelocationModel);
3313
3314 if ((RelocationModel == llvm::Reloc::ROPI ||
3315 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3316 types::isCXX(Input.getType()) &&
3317 !Args.hasArg(options::OPT_fallow_unsupported))
3318 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3319
3320 if (RMName) {
3321 CmdArgs.push_back("-mrelocation-model");
3322 CmdArgs.push_back(RMName);
3323 }
3324 if (PICLevel > 0) {
3325 CmdArgs.push_back("-pic-level");
3326 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3327 if (IsPIE)
3328 CmdArgs.push_back("-pic-is-pie");
3329 }
3330
3331 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3332 CmdArgs.push_back("-meabi");
3333 CmdArgs.push_back(A->getValue());
3334 }
3335
3336 CmdArgs.push_back("-mthread-model");
3337 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3338 if (!getToolChain().isThreadModelSupported(A->getValue()))
3339 D.Diag(diag::err_drv_invalid_thread_model_for_target)
3340 << A->getValue() << A->getAsString(Args);
3341 CmdArgs.push_back(A->getValue());
3342 }
3343 else
3344 CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
3345
3346 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3347
3348 if (!Args.hasFlag(options::OPT_fmerge_all_constants,
3349 options::OPT_fno_merge_all_constants))
3350 CmdArgs.push_back("-fno-merge-all-constants");
3351
3352 // LLVM Code Generator Options.
3353
3354 if (Args.hasArg(options::OPT_frewrite_map_file) ||
3355 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3356 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3357 options::OPT_frewrite_map_file_EQ)) {
3358 StringRef Map = A->getValue();
3359 if (!llvm::sys::fs::exists(Map)) {
3360 D.Diag(diag::err_drv_no_such_file) << Map;
3361 } else {
3362 CmdArgs.push_back("-frewrite-map-file");
3363 CmdArgs.push_back(A->getValue());
3364 A->claim();
3365 }
3366 }
3367 }
3368
3369 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3370 StringRef v = A->getValue();
3371 CmdArgs.push_back("-mllvm");
3372 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3373 A->claim();
3374 }
3375
3376 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3377 true))
3378 CmdArgs.push_back("-fno-jump-tables");
3379
3380 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3381 options::OPT_fno_profile_sample_accurate, false))
3382 CmdArgs.push_back("-fprofile-sample-accurate");
3383
3384 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3385 options::OPT_fno_preserve_as_comments, true))
3386 CmdArgs.push_back("-fno-preserve-as-comments");
3387
3388 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3389 CmdArgs.push_back("-mregparm");
3390 CmdArgs.push_back(A->getValue());
3391 }
3392
3393 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3394 options::OPT_freg_struct_return)) {
3395 if (getToolChain().getArch() != llvm::Triple::x86) {
3396 D.Diag(diag::err_drv_unsupported_opt_for_target)
3397 << A->getSpelling() << RawTriple.str();
3398 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3399 CmdArgs.push_back("-fpcc-struct-return");
3400 } else {
3401 assert(A->getOption().matches(options::OPT_freg_struct_return))(static_cast <bool> (A->getOption().matches(options::
OPT_freg_struct_return)) ? void (0) : __assert_fail ("A->getOption().matches(options::OPT_freg_struct_return)"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3401, __extension__ __PRETTY_FUNCTION__))
;
3402 CmdArgs.push_back("-freg-struct-return");
3403 }
3404 }
3405
3406 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3407 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3408
3409 if (shouldUseFramePointer(Args, RawTriple))
3410 CmdArgs.push_back("-mdisable-fp-elim");
3411 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3412 options::OPT_fno_zero_initialized_in_bss))
3413 CmdArgs.push_back("-mno-zero-initialized-in-bss");
3414
3415 bool OFastEnabled = isOptimizationLevelFast(Args);
3416 // If -Ofast is the optimization level, then -fstrict-aliasing should be
3417 // enabled. This alias option is being used to simplify the hasFlag logic.
3418 OptSpecifier StrictAliasingAliasOption =
3419 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3420 // We turn strict aliasing off by default if we're in CL mode, since MSVC
3421 // doesn't do any TBAA.
3422 bool TBAAOnByDefault = !D.IsCLMode();
3423 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3424 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3425 CmdArgs.push_back("-relaxed-aliasing");
3426 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3427 options::OPT_fno_struct_path_tbaa))
3428 CmdArgs.push_back("-no-struct-path-tbaa");
3429 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3430 false))
3431 CmdArgs.push_back("-fstrict-enums");
3432 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3433 true))
3434 CmdArgs.push_back("-fno-strict-return");
3435 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3436 options::OPT_fno_allow_editor_placeholders, false))
3437 CmdArgs.push_back("-fallow-editor-placeholders");
3438 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3439 options::OPT_fno_strict_vtable_pointers,
3440 false))
3441 CmdArgs.push_back("-fstrict-vtable-pointers");
3442 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3443 options::OPT_fno_optimize_sibling_calls))
3444 CmdArgs.push_back("-mdisable-tail-calls");
3445
3446 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3447 options::OPT_fno_fine_grained_bitfield_accesses);
3448
3449 // Handle segmented stacks.
3450 if (Args.hasArg(options::OPT_fsplit_stack))
3451 CmdArgs.push_back("-split-stacks");
3452
3453 RenderFloatingPointOptions(getToolChain(), D, OFastEnabled, Args, CmdArgs);
3454
3455 // Decide whether to use verbose asm. Verbose assembly is the default on
3456 // toolchains which have the integrated assembler on by default.
3457 bool IsIntegratedAssemblerDefault =
3458 getToolChain().IsIntegratedAssemblerDefault();
3459 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3460 IsIntegratedAssemblerDefault) ||
3461 Args.hasArg(options::OPT_dA))
3462 CmdArgs.push_back("-masm-verbose");
3463
3464 if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as,
3465 IsIntegratedAssemblerDefault))
3466 CmdArgs.push_back("-no-integrated-as");
3467
3468 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3469 CmdArgs.push_back("-mdebug-pass");
3470 CmdArgs.push_back("Structure");
3471 }
3472 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3473 CmdArgs.push_back("-mdebug-pass");
3474 CmdArgs.push_back("Arguments");
3475 }
3476
3477 // Enable -mconstructor-aliases except on darwin, where we have to work around
3478 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3479 // aliases aren't supported.
3480 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3481 CmdArgs.push_back("-mconstructor-aliases");
3482
3483 // Darwin's kernel doesn't support guard variables; just die if we
3484 // try to use them.
3485 if (KernelOrKext && RawTriple.isOSDarwin())
3486 CmdArgs.push_back("-fforbid-guard-variables");
3487
3488 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3489 false)) {
3490 CmdArgs.push_back("-mms-bitfields");
3491 }
3492
3493 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3494 options::OPT_mno_pie_copy_relocations,
3495 false)) {
3496 CmdArgs.push_back("-mpie-copy-relocations");
3497 }
3498
3499 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3500 CmdArgs.push_back("-fno-plt");
3501 }
3502
3503 // -fhosted is default.
3504 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3505 // use Freestanding.
3506 bool Freestanding =
3507 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3508 KernelOrKext;
3509 if (Freestanding)
3510 CmdArgs.push_back("-ffreestanding");
3511
3512 // This is a coarse approximation of what llvm-gcc actually does, both
3513 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3514 // complicated ways.
3515 bool AsynchronousUnwindTables =
3516 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3517 options::OPT_fno_asynchronous_unwind_tables,
3518 (getToolChain().IsUnwindTablesDefault(Args) ||
3519 getToolChain().getSanitizerArgs().needsUnwindTables()) &&
3520 !Freestanding);
3521 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3522 AsynchronousUnwindTables))
3523 CmdArgs.push_back("-munwind-tables");
3524
3525 getToolChain().addClangTargetOptions(Args, CmdArgs,
3526 JA.getOffloadingDeviceKind());
3527
3528 if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
3529 CmdArgs.push_back("-mlimit-float-precision");
3530 CmdArgs.push_back(A->getValue());
3531 }
3532
3533 // FIXME: Handle -mtune=.
3534 (void)Args.hasArg(options::OPT_mtune_EQ);
3535
3536 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
3537 CmdArgs.push_back("-mcode-model");
3538 CmdArgs.push_back(A->getValue());
3539 }
3540
3541 // Add the target cpu
3542 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
3543 if (!CPU.empty()) {
3544 CmdArgs.push_back("-target-cpu");
3545 CmdArgs.push_back(Args.MakeArgString(CPU));
3546 }
3547
3548 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
3549
3550 // These two are potentially updated by AddClangCLArgs.
3551 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
3552 bool EmitCodeView = false;
3553
3554 // Add clang-cl arguments.
3555 types::ID InputType = Input.getType();
3556 if (D.IsCLMode())
3557 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
3558
3559 const Arg *SplitDWARFArg = nullptr;
3560 RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView,
3561 IsWindowsMSVC, CmdArgs, DebugInfoKind, SplitDWARFArg);
3562
3563 // Add the split debug info name to the command lines here so we
3564 // can propagate it to the backend.
3565 bool SplitDWARF = SplitDWARFArg && RawTriple.isOSLinux() &&
3566 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
3567 isa<BackendJobAction>(JA));
3568 const char *SplitDWARFOut;
3569 if (SplitDWARF) {
3570 CmdArgs.push_back("-split-dwarf-file");
3571 SplitDWARFOut = SplitDebugName(Args, Input);
3572 CmdArgs.push_back(SplitDWARFOut);
3573 }
3574
3575 // Pass the linker version in use.
3576 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
3577 CmdArgs.push_back("-target-linker-version");
3578 CmdArgs.push_back(A->getValue());
3579 }
3580
3581 if (!shouldUseLeafFramePointer(Args, RawTriple))
3582 CmdArgs.push_back("-momit-leaf-frame-pointer");
3583
3584 // Explicitly error on some things we know we don't support and can't just
3585 // ignore.
3586 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
3587 Arg *Unsupported;
3588 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
3589 getToolChain().getArch() == llvm::Triple::x86) {
3590 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
3591 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
3592 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
3593 << Unsupported->getOption().getName();
3594 }
3595 // The faltivec option has been superseded by the maltivec option.
3596 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
3597 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3598 << Unsupported->getOption().getName()
3599 << "please use -maltivec and include altivec.h explicitly";
3600 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
3601 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3602 << Unsupported->getOption().getName() << "please use -mno-altivec";
3603 }
3604
3605 Args.AddAllArgs(CmdArgs, options::OPT_v);
3606 Args.AddLastArg(CmdArgs, options::OPT_H);
3607 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
3608 CmdArgs.push_back("-header-include-file");
3609 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
3610 : "-");
3611 }
3612 Args.AddLastArg(CmdArgs, options::OPT_P);
3613 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
3614
3615 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
3616 CmdArgs.push_back("-diagnostic-log-file");
3617 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
3618 : "-");
3619 }
3620
3621 bool UseSeparateSections = isUseSeparateSections(Triple);
3622
3623 if (Args.hasFlag(options::OPT_ffunction_sections,
3624 options::OPT_fno_function_sections, UseSeparateSections)) {
3625 CmdArgs.push_back("-ffunction-sections");
3626 }
3627
3628 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
3629 UseSeparateSections)) {
3630 CmdArgs.push_back("-fdata-sections");
3631 }
3632
3633 if (!Args.hasFlag(options::OPT_funique_section_names,
3634 options::OPT_fno_unique_section_names, true))
3635 CmdArgs.push_back("-fno-unique-section-names");
3636
3637 if (auto *A = Args.getLastArg(
3638 options::OPT_finstrument_functions,
3639 options::OPT_finstrument_functions_after_inlining,
3640 options::OPT_finstrument_function_entry_bare))
3641 A->render(Args, CmdArgs);
3642
3643 // NVPTX doesn't support PGO or coverage. There's no runtime support for
3644 // sampling, overhead of call arc collection is way too high and there's no
3645 // way to collect the output.
3646 if (!Triple.isNVPTX())
3647 addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
3648
3649 if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
3650 ABICompatArg->render(Args, CmdArgs);
3651
3652 // Add runtime flag for PS4 when PGO or Coverage are enabled.
3653 if (RawTriple.isPS4CPU())
3654 PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
3655
3656 // Pass options for controlling the default header search paths.
3657 if (Args.hasArg(options::OPT_nostdinc)) {
3658 CmdArgs.push_back("-nostdsysteminc");
3659 CmdArgs.push_back("-nobuiltininc");
3660 } else {
3661 if (Args.hasArg(options::OPT_nostdlibinc))
3662 CmdArgs.push_back("-nostdsysteminc");
3663 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
3664 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
3665 }
3666
3667 // Pass the path to compiler resource files.
3668 CmdArgs.push_back("-resource-dir");
3669 CmdArgs.push_back(D.ResourceDir.c_str());
3670
3671 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
3672
3673 RenderARCMigrateToolOptions(D, Args, CmdArgs);
3674
3675 // Add preprocessing options like -I, -D, etc. if we are using the
3676 // preprocessor.
3677 //
3678 // FIXME: Support -fpreprocessed
3679 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
3680 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
3681
3682 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
3683 // that "The compiler can only warn and ignore the option if not recognized".
3684 // When building with ccache, it will pass -D options to clang even on
3685 // preprocessed inputs and configure concludes that -fPIC is not supported.
3686 Args.ClaimAllArgs(options::OPT_D);
3687
3688 // Manually translate -O4 to -O3; let clang reject others.
3689 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3690 if (A->getOption().matches(options::OPT_O4)) {
3691 CmdArgs.push_back("-O3");
3692 D.Diag(diag::warn_O4_is_O3);
3693 } else {
3694 A->render(Args, CmdArgs);
3695 }
3696 }
3697
3698 // Warn about ignored options to clang.
3699 for (const Arg *A :
3700 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
3701 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
3702 A->claim();
3703 }
3704
3705 for (const Arg *A :
3706 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
3707 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
3708 A->claim();
3709 }
3710
3711 claimNoWarnArgs(Args);
3712
3713 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
3714
3715 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
3716 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
3717 CmdArgs.push_back("-pedantic");
3718 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
3719 Args.AddLastArg(CmdArgs, options::OPT_w);
3720
3721 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
3722 // (-ansi is equivalent to -std=c89 or -std=c++98).
3723 //
3724 // If a std is supplied, only add -trigraphs if it follows the
3725 // option.
3726 bool ImplyVCPPCXXVer = false;
3727 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
3728 if (Std->getOption().matches(options::OPT_ansi))
3729 if (types::isCXX(InputType))
3730 CmdArgs.push_back("-std=c++98");
3731 else
3732 CmdArgs.push_back("-std=c89");
3733 else
3734 Std->render(Args, CmdArgs);
3735
3736 // If -f(no-)trigraphs appears after the language standard flag, honor it.
3737 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
3738 options::OPT_ftrigraphs,
3739 options::OPT_fno_trigraphs))
3740 if (A != Std)
3741 A->render(Args, CmdArgs);
3742 } else {
3743 // Honor -std-default.
3744 //
3745 // FIXME: Clang doesn't correctly handle -std= when the input language
3746 // doesn't match. For the time being just ignore this for C++ inputs;
3747 // eventually we want to do all the standard defaulting here instead of
3748 // splitting it between the driver and clang -cc1.
3749 if (!types::isCXX(InputType))
3750 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3751 /*Joined=*/true);
3752 else if (IsWindowsMSVC)
3753 ImplyVCPPCXXVer = true;
3754
3755 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3756 options::OPT_fno_trigraphs);
3757 }
3758
3759 // GCC's behavior for -Wwrite-strings is a bit strange:
3760 // * In C, this "warning flag" changes the types of string literals from
3761 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3762 // for the discarded qualifier.
3763 // * In C++, this is just a normal warning flag.
3764 //
3765 // Implementing this warning correctly in C is hard, so we follow GCC's
3766 // behavior for now. FIXME: Directly diagnose uses of a string literal as
3767 // a non-const char* in C, rather than using this crude hack.
3768 if (!types::isCXX(InputType)) {
3769 // FIXME: This should behave just like a warning flag, and thus should also
3770 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3771 Arg *WriteStrings =
3772 Args.getLastArg(options::OPT_Wwrite_strings,
3773 options::OPT_Wno_write_strings, options::OPT_w);
3774 if (WriteStrings &&
3775 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3776 CmdArgs.push_back("-fconst-strings");
3777 }
3778
3779 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3780 // during C++ compilation, which it is by default. GCC keeps this define even
3781 // in the presence of '-w', match this behavior bug-for-bug.
3782 if (types::isCXX(InputType) &&
3783 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3784 true)) {
3785 CmdArgs.push_back("-fdeprecated-macro");
3786 }
3787
3788 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3789 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3790 if (Asm->getOption().matches(options::OPT_fasm))
3791 CmdArgs.push_back("-fgnu-keywords");
3792 else
3793 CmdArgs.push_back("-fno-gnu-keywords");
3794 }
3795
3796 if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3797 CmdArgs.push_back("-fno-dwarf-directory-asm");
3798
3799 if (ShouldDisableAutolink(Args, getToolChain()))
3800 CmdArgs.push_back("-fno-autolink");
3801
3802 // Add in -fdebug-compilation-dir if necessary.
3803 addDebugCompDirArg(Args, CmdArgs);
3804
3805 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
3806 StringRef Map = A->getValue();
3807 if (Map.find('=') == StringRef::npos)
3808 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
3809 else
3810 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
3811 A->claim();
3812 }
3813
3814 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3815 options::OPT_ftemplate_depth_EQ)) {
3816 CmdArgs.push_back("-ftemplate-depth");
3817 CmdArgs.push_back(A->getValue());
3818 }
3819
3820 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3821 CmdArgs.push_back("-foperator-arrow-depth");
3822 CmdArgs.push_back(A->getValue());
3823 }
3824
3825 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3826 CmdArgs.push_back("-fconstexpr-depth");
3827 CmdArgs.push_back(A->getValue());
3828 }
3829
3830 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3831 CmdArgs.push_back("-fconstexpr-steps");
3832 CmdArgs.push_back(A->getValue());
3833 }
3834
3835 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3836 CmdArgs.push_back("-fbracket-depth");
3837 CmdArgs.push_back(A->getValue());
3838 }
3839
3840 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3841 options::OPT_Wlarge_by_value_copy_def)) {
3842 if (A->getNumValues()) {
3843 StringRef bytes = A->getValue();
3844 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3845 } else
3846 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3847 }
3848
3849 if (Args.hasArg(options::OPT_relocatable_pch))
3850 CmdArgs.push_back("-relocatable-pch");
3851
3852 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3853 CmdArgs.push_back("-fconstant-string-class");
3854 CmdArgs.push_back(A->getValue());
3855 }
3856
3857 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3858 CmdArgs.push_back("-ftabstop");
3859 CmdArgs.push_back(A->getValue());
3860 }
3861
3862 if (Args.hasFlag(options::OPT_fstack_size_section,
3863 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
3864 CmdArgs.push_back("-fstack-size-section");
3865
3866 CmdArgs.push_back("-ferror-limit");
3867 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3868 CmdArgs.push_back(A->getValue());
3869 else
3870 CmdArgs.push_back("19");
3871
3872 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3873 CmdArgs.push_back("-fmacro-backtrace-limit");
3874 CmdArgs.push_back(A->getValue());
3875 }
3876
3877 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3878 CmdArgs.push_back("-ftemplate-backtrace-limit");
3879 CmdArgs.push_back(A->getValue());
3880 }
3881
3882 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3883 CmdArgs.push_back("-fconstexpr-backtrace-limit");
3884 CmdArgs.push_back(A->getValue());
3885 }
3886
3887 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3888 CmdArgs.push_back("-fspell-checking-limit");
3889 CmdArgs.push_back(A->getValue());
3890 }
3891
3892 // Pass -fmessage-length=.
3893 CmdArgs.push_back("-fmessage-length");
3894 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3895 CmdArgs.push_back(A->getValue());
3896 } else {
3897 // If -fmessage-length=N was not specified, determine whether this is a
3898 // terminal and, if so, implicitly define -fmessage-length appropriately.
3899 unsigned N = llvm::sys::Process::StandardErrColumns();
3900 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3901 }
3902
3903 // -fvisibility= and -fvisibility-ms-compat are of a piece.
3904 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3905 options::OPT_fvisibility_ms_compat)) {
3906 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3907 CmdArgs.push_back("-fvisibility");
3908 CmdArgs.push_back(A->getValue());
3909 } else {
3910 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat))(static_cast <bool> (A->getOption().matches(options::
OPT_fvisibility_ms_compat)) ? void (0) : __assert_fail ("A->getOption().matches(options::OPT_fvisibility_ms_compat)"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 3910, __extension__ __PRETTY_FUNCTION__))
;
3911 CmdArgs.push_back("-fvisibility");
3912 CmdArgs.push_back("hidden");
3913 CmdArgs.push_back("-ftype-visibility");
3914 CmdArgs.push_back("default");
3915 }
3916 }
3917
3918 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3919
3920 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3921
3922 // Forward -f (flag) options which we can pass directly.
3923 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3924 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3925 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3926 // Emulated TLS is enabled by default on Android and OpenBSD, and can be enabled
3927 // manually with -femulated-tls.
3928 bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isOSOpenBSD() ||
3929 Triple.isWindowsCygwinEnvironment();
3930 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
3931 EmulatedTLSDefault))
3932 CmdArgs.push_back("-femulated-tls");
3933 // AltiVec-like language extensions aren't relevant for assembling.
3934 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3935 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
3936
3937 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
3938 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
3939
3940 // Forward flags for OpenMP. We don't do this if the current action is an
3941 // device offloading action other than OpenMP.
3942 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
3943 options::OPT_fno_openmp, false) &&
3944 (JA.isDeviceOffloading(Action::OFK_None) ||
3945 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
3946 switch (D.getOpenMPRuntime(Args)) {
3947 case Driver::OMPRT_OMP:
3948 case Driver::OMPRT_IOMP5:
3949 // Clang can generate useful OpenMP code for these two runtime libraries.
3950 CmdArgs.push_back("-fopenmp");
3951
3952 // If no option regarding the use of TLS in OpenMP codegeneration is
3953 // given, decide a default based on the target. Otherwise rely on the
3954 // options and pass the right information to the frontend.
3955 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
3956 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
3957 CmdArgs.push_back("-fnoopenmp-use-tls");
3958 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3959 break;
3960 default:
3961 // By default, if Clang doesn't know how to generate useful OpenMP code
3962 // for a specific runtime library, we just don't pass the '-fopenmp' flag
3963 // down to the actual compilation.
3964 // FIXME: It would be better to have a mode which *only* omits IR
3965 // generation based on the OpenMP support so that we get consistent
3966 // semantic analysis, etc.
3967 break;
3968 }
3969 } else {
3970 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
3971 options::OPT_fno_openmp_simd);
3972 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3973 }
3974
3975 const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
3976 Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
3977
3978 const XRayArgs &XRay = getToolChain().getXRayArgs();
3979 XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
3980
3981 if (getToolChain().SupportsProfiling())
3982 Args.AddLastArg(CmdArgs, options::OPT_pg);
3983
3984 if (getToolChain().SupportsProfiling())
3985 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
3986
3987 // -flax-vector-conversions is default.
3988 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
3989 options::OPT_fno_lax_vector_conversions))
3990 CmdArgs.push_back("-fno-lax-vector-conversions");
3991
3992 if (Args.getLastArg(options::OPT_fapple_kext) ||
3993 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
3994 CmdArgs.push_back("-fapple-kext");
3995
3996 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
3997 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
3998 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
3999 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4000 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4001
4002 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4003 CmdArgs.push_back("-ftrapv-handler");
4004 CmdArgs.push_back(A->getValue());
4005 }
4006
4007 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4008
4009 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4010 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4011 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4012 if (A->getOption().matches(options::OPT_fwrapv))
4013 CmdArgs.push_back("-fwrapv");
4014 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4015 options::OPT_fno_strict_overflow)) {
4016 if (A->getOption().matches(options::OPT_fno_strict_overflow))
4017 CmdArgs.push_back("-fwrapv");
4018 }
4019
4020 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4021 options::OPT_fno_reroll_loops))
4022 if (A->getOption().matches(options::OPT_freroll_loops))
4023 CmdArgs.push_back("-freroll-loops");
4024
4025 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4026 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4027 options::OPT_fno_unroll_loops);
4028
4029 Args.AddLastArg(CmdArgs, options::OPT_pthread);
4030
4031 RenderSSPOptions(getToolChain(), Args, CmdArgs, KernelOrKext);
4032
4033 // Translate -mstackrealign
4034 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4035 false))
4036 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4037
4038 if (Args.hasArg(options::OPT_mstack_alignment)) {
4039 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4040 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4041 }
4042
4043 if (Args.hasArg(options::OPT_mstack_probe_size)) {
4044 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4045
4046 if (!Size.empty())
4047 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4048 else
4049 CmdArgs.push_back("-mstack-probe-size=0");
4050 }
4051
4052 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4053 options::OPT_mno_restrict_it)) {
4054 if (A->getOption().matches(options::OPT_mrestrict_it)) {
4055 CmdArgs.push_back("-backend-option");
4056 CmdArgs.push_back("-arm-restrict-it");
4057 } else {
4058 CmdArgs.push_back("-backend-option");
4059 CmdArgs.push_back("-arm-no-restrict-it");
4060 }
4061 } else if (Triple.isOSWindows() &&
4062 (Triple.getArch() == llvm::Triple::arm ||
4063 Triple.getArch() == llvm::Triple::thumb)) {
4064 // Windows on ARM expects restricted IT blocks
4065 CmdArgs.push_back("-backend-option");
4066 CmdArgs.push_back("-arm-restrict-it");
4067 }
4068
4069 // Forward -cl options to -cc1
4070 RenderOpenCLOptions(Args, CmdArgs);
4071
4072 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4073 CmdArgs.push_back(
4074 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4075 }
4076
4077 // Forward -f options with positive and negative forms; we translate
4078 // these by hand.
4079 if (Arg *A = getLastProfileSampleUseArg(Args)) {
4080 StringRef fname = A->getValue();
4081 if (!llvm::sys::fs::exists(fname))
4082 D.Diag(diag::err_drv_no_such_file) << fname;
4083 else
4084 A->render(Args, CmdArgs);
4085 }
4086
4087 RenderBuiltinOptions(getToolChain(), RawTriple, Args, CmdArgs);
4088
4089 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4090 options::OPT_fno_assume_sane_operator_new))
4091 CmdArgs.push_back("-fno-assume-sane-operator-new");
4092
4093 // -fblocks=0 is default.
4094 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4095 getToolChain().IsBlocksDefault()) ||
4096 (Args.hasArg(options::OPT_fgnu_runtime) &&
4097 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4098 !Args.hasArg(options::OPT_fno_blocks))) {
4099 CmdArgs.push_back("-fblocks");
4100
4101 if (!Args.hasArg(options::OPT_fgnu_runtime) &&
4102 !getToolChain().hasBlocksRuntime())
4103 CmdArgs.push_back("-fblocks-runtime-optional");
4104 }
4105
4106 // -fencode-extended-block-signature=1 is default.
4107 if (getToolChain().IsEncodeExtendedBlockSignatureDefault())
4108 CmdArgs.push_back("-fencode-extended-block-signature");
4109
4110 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4111 false) &&
4112 types::isCXX(InputType)) {
4113 CmdArgs.push_back("-fcoroutines-ts");
4114 }
4115
4116 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4117 options::OPT_fno_double_square_bracket_attributes);
4118
4119 bool HaveModules = false;
4120 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4121
4122 // -faccess-control is default.
4123 if (Args.hasFlag(options::OPT_fno_access_control,
4124 options::OPT_faccess_control, false))
4125 CmdArgs.push_back("-fno-access-control");
4126
4127 // -felide-constructors is the default.
4128 if (Args.hasFlag(options::OPT_fno_elide_constructors,
4129 options::OPT_felide_constructors, false))
4130 CmdArgs.push_back("-fno-elide-constructors");
4131
4132 ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
4133
4134 if (KernelOrKext || (types::isCXX(InputType) &&
4135 (RTTIMode == ToolChain::RM_DisabledExplicitly ||
4136 RTTIMode == ToolChain::RM_DisabledImplicitly)))
4137 CmdArgs.push_back("-fno-rtti");
4138
4139 // -fshort-enums=0 is default for all architectures except Hexagon.
4140 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4141 getToolChain().getArch() == llvm::Triple::hexagon))
4142 CmdArgs.push_back("-fshort-enums");
4143
4144 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4145
4146 // -fuse-cxa-atexit is default.
4147 if (!Args.hasFlag(
4148 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4149 !RawTriple.isOSWindows() &&
4150 RawTriple.getOS() != llvm::Triple::Solaris &&
4151 getToolChain().getArch() != llvm::Triple::hexagon &&
4152 getToolChain().getArch() != llvm::Triple::xcore &&
4153 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4154 RawTriple.hasEnvironment())) ||
4155 KernelOrKext)
4156 CmdArgs.push_back("-fno-use-cxa-atexit");
4157
4158 // -fms-extensions=0 is default.
4159 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4160 IsWindowsMSVC))
4161 CmdArgs.push_back("-fms-extensions");
4162
4163 // -fno-use-line-directives is default.
4164 if (Args.hasFlag(options::OPT_fuse_line_directives,
4165 options::OPT_fno_use_line_directives, false))
4166 CmdArgs.push_back("-fuse-line-directives");
4167
4168 // -fms-compatibility=0 is default.
4169 if (Args.hasFlag(options::OPT_fms_compatibility,
4170 options::OPT_fno_ms_compatibility,
4171 (IsWindowsMSVC &&
4172 Args.hasFlag(options::OPT_fms_extensions,
4173 options::OPT_fno_ms_extensions, true))))
4174 CmdArgs.push_back("-fms-compatibility");
4175
4176 VersionTuple MSVT = getToolChain().computeMSVCVersion(&D, Args);
4177 if (!MSVT.empty())
4178 CmdArgs.push_back(
4179 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4180
4181 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4182 if (ImplyVCPPCXXVer) {
4183 StringRef LanguageStandard;
4184 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4185 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4186 .Case("c++14", "-std=c++14")
4187 .Case("c++17", "-std=c++17")
4188 .Case("c++latest", "-std=c++2a")
4189 .Default("");
4190 if (LanguageStandard.empty())
4191 D.Diag(clang::diag::warn_drv_unused_argument)
4192 << StdArg->getAsString(Args);
4193 }
4194
4195 if (LanguageStandard.empty()) {
4196 if (IsMSVC2015Compatible)
4197 LanguageStandard = "-std=c++14";
4198 else
4199 LanguageStandard = "-std=c++11";
4200 }
4201
4202 CmdArgs.push_back(LanguageStandard.data());
4203 }
4204
4205 // -fno-borland-extensions is default.
4206 if (Args.hasFlag(options::OPT_fborland_extensions,
4207 options::OPT_fno_borland_extensions, false))
4208 CmdArgs.push_back("-fborland-extensions");
4209
4210 // -fno-declspec is default, except for PS4.
4211 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4212 RawTriple.isPS4()))
4213 CmdArgs.push_back("-fdeclspec");
4214 else if (Args.hasArg(options::OPT_fno_declspec))
4215 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4216
4217 // -fthreadsafe-static is default, except for MSVC compatibility versions less
4218 // than 19.
4219 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4220 options::OPT_fno_threadsafe_statics,
4221 !IsWindowsMSVC || IsMSVC2015Compatible))
4222 CmdArgs.push_back("-fno-threadsafe-statics");
4223
4224 // -fno-delayed-template-parsing is default, except when targetting MSVC.
4225 // Many old Windows SDK versions require this to parse.
4226 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4227 // compiler. We should be able to disable this by default at some point.
4228 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4229 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4230 CmdArgs.push_back("-fdelayed-template-parsing");
4231
4232 // -fgnu-keywords default varies depending on language; only pass if
4233 // specified.
4234 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4235 options::OPT_fno_gnu_keywords))
4236 A->render(Args, CmdArgs);
4237
4238 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4239 false))
4240 CmdArgs.push_back("-fgnu89-inline");
4241
4242 if (Args.hasArg(options::OPT_fno_inline))
4243 CmdArgs.push_back("-fno-inline");
4244
4245 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4246 options::OPT_finline_hint_functions,
4247 options::OPT_fno_inline_functions))
4248 InlineArg->render(Args, CmdArgs);
4249
4250 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4251 options::OPT_fno_experimental_new_pass_manager);
4252
4253 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4254 RenderObjCOptions(getToolChain(), D, RawTriple, Args, Runtime,
4255 rewriteKind != RK_None, Input, CmdArgs);
4256
4257 if (Args.hasFlag(options::OPT_fapplication_extension,
4258 options::OPT_fno_application_extension, false))
4259 CmdArgs.push_back("-fapplication-extension");
4260
4261 // Handle GCC-style exception args.
4262 if (!C.getDriver().IsCLMode())
4263 addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, Runtime,
4264 CmdArgs);
4265
4266 // Handle exception personalities
4267 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4268 options::OPT_fseh_exceptions,
4269 options::OPT_fdwarf_exceptions);
4270 if (A) {
4271 const Option &Opt = A->getOption();
4272 if (Opt.matches(options::OPT_fsjlj_exceptions))
4273 CmdArgs.push_back("-fsjlj-exceptions");
4274 if (Opt.matches(options::OPT_fseh_exceptions))
4275 CmdArgs.push_back("-fseh-exceptions");
4276 if (Opt.matches(options::OPT_fdwarf_exceptions))
4277 CmdArgs.push_back("-fdwarf-exceptions");
4278 } else {
4279 switch (getToolChain().GetExceptionModel(Args)) {
4280 default:
4281 break;
4282 case llvm::ExceptionHandling::DwarfCFI:
4283 CmdArgs.push_back("-fdwarf-exceptions");
4284 break;
4285 case llvm::ExceptionHandling::SjLj:
4286 CmdArgs.push_back("-fsjlj-exceptions");
4287 break;
4288 case llvm::ExceptionHandling::WinEH:
4289 CmdArgs.push_back("-fseh-exceptions");
4290 break;
4291 }
4292 }
4293
4294 // C++ "sane" operator new.
4295 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4296 options::OPT_fno_assume_sane_operator_new))
4297 CmdArgs.push_back("-fno-assume-sane-operator-new");
4298
4299 // -frelaxed-template-template-args is off by default, as it is a severe
4300 // breaking change until a corresponding change to template partial ordering
4301 // is provided.
4302 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4303 options::OPT_fno_relaxed_template_template_args, false))
4304 CmdArgs.push_back("-frelaxed-template-template-args");
4305
4306 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4307 // most platforms.
4308 if (Args.hasFlag(options::OPT_fsized_deallocation,
4309 options::OPT_fno_sized_deallocation, false))
4310 CmdArgs.push_back("-fsized-deallocation");
4311
4312 // -faligned-allocation is on by default in C++17 onwards and otherwise off
4313 // by default.
4314 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4315 options::OPT_fno_aligned_allocation,
4316 options::OPT_faligned_new_EQ)) {
4317 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4318 CmdArgs.push_back("-fno-aligned-allocation");
4319 else
4320 CmdArgs.push_back("-faligned-allocation");
4321 }
4322
4323 // The default new alignment can be specified using a dedicated option or via
4324 // a GCC-compatible option that also turns on aligned allocation.
4325 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4326 options::OPT_faligned_new_EQ))
4327 CmdArgs.push_back(
4328 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4329
4330 // -fconstant-cfstrings is default, and may be subject to argument translation
4331 // on Darwin.
4332 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4333 options::OPT_fno_constant_cfstrings) ||
4334 !Args.hasFlag(options::OPT_mconstant_cfstrings,
4335 options::OPT_mno_constant_cfstrings))
4336 CmdArgs.push_back("-fno-constant-cfstrings");
4337
4338 // -fno-pascal-strings is default, only pass non-default.
4339 if (Args.hasFlag(options::OPT_fpascal_strings,
4340 options::OPT_fno_pascal_strings, false))
4341 CmdArgs.push_back("-fpascal-strings");
4342
4343 // Honor -fpack-struct= and -fpack-struct, if given. Note that
4344 // -fno-pack-struct doesn't apply to -fpack-struct=.
4345 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4346 std::string PackStructStr = "-fpack-struct=";
4347 PackStructStr += A->getValue();
4348 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4349 } else if (Args.hasFlag(options::OPT_fpack_struct,
4350 options::OPT_fno_pack_struct, false)) {
4351 CmdArgs.push_back("-fpack-struct=1");
4352 }
4353
4354 // Handle -fmax-type-align=N and -fno-type-align
4355 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4356 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4357 if (!SkipMaxTypeAlign) {
4358 std::string MaxTypeAlignStr = "-fmax-type-align=";
4359 MaxTypeAlignStr += A->getValue();
4360 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4361 }
4362 } else if (RawTriple.isOSDarwin()) {
4363 if (!SkipMaxTypeAlign) {
4364 std::string MaxTypeAlignStr = "-fmax-type-align=16";
4365 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4366 }
4367 }
4368
4369 // -fcommon is the default unless compiling kernel code or the target says so
4370 bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4371 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4372 !NoCommonDefault))
4373 CmdArgs.push_back("-fno-common");
4374
4375 // -fsigned-bitfields is default, and clang doesn't yet support
4376 // -funsigned-bitfields.
4377 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4378 options::OPT_funsigned_bitfields))
4379 D.Diag(diag::warn_drv_clang_unsupported)
4380 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4381
4382 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4383 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4384 D.Diag(diag::err_drv_clang_unsupported)
4385 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4386
4387 // -finput_charset=UTF-8 is default. Reject others
4388 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4389 StringRef value = inputCharset->getValue();
4390 if (!value.equals_lower("utf-8"))
4391 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4392 << value;
4393 }
4394
4395 // -fexec_charset=UTF-8 is default. Reject others
4396 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4397 StringRef value = execCharset->getValue();
4398 if (!value.equals_lower("utf-8"))
4399 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4400 << value;
4401 }
4402
4403 RenderDiagnosticsOptions(D, Args, CmdArgs);
4404
4405 // -fno-asm-blocks is default.
4406 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4407 false))
4408 CmdArgs.push_back("-fasm-blocks");
4409
4410 // -fgnu-inline-asm is default.
4411 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4412 options::OPT_fno_gnu_inline_asm, true))
4413 CmdArgs.push_back("-fno-gnu-inline-asm");
4414
4415 // Enable vectorization per default according to the optimization level
4416 // selected. For optimization levels that want vectorization we use the alias
4417 // option to simplify the hasFlag logic.
4418 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4419 OptSpecifier VectorizeAliasOption =
4420 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4421 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4422 options::OPT_fno_vectorize, EnableVec))
4423 CmdArgs.push_back("-vectorize-loops");
4424
4425 // -fslp-vectorize is enabled based on the optimization level selected.
4426 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4427 OptSpecifier SLPVectAliasOption =
4428 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4429 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4430 options::OPT_fno_slp_vectorize, EnableSLPVec))
4431 CmdArgs.push_back("-vectorize-slp");
4432
4433 ParseMPreferVectorWidth(D, Args, CmdArgs);
4434
4435 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4436 A->render(Args, CmdArgs);
4437
4438 if (Arg *A = Args.getLastArg(
4439 options::OPT_fsanitize_undefined_strip_path_components_EQ))
4440 A->render(Args, CmdArgs);
4441
4442 // -fdollars-in-identifiers default varies depending on platform and
4443 // language; only pass if specified.
4444 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4445 options::OPT_fno_dollars_in_identifiers)) {
4446 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4447 CmdArgs.push_back("-fdollars-in-identifiers");
4448 else
4449 CmdArgs.push_back("-fno-dollars-in-identifiers");
4450 }
4451
4452 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4453 // practical purposes.
4454 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4455 options::OPT_fno_unit_at_a_time)) {
4456 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4457 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4458 }
4459
4460 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4461 options::OPT_fno_apple_pragma_pack, false))
4462 CmdArgs.push_back("-fapple-pragma-pack");
4463
4464 if (Args.hasFlag(options::OPT_fsave_optimization_record,
4465 options::OPT_foptimization_record_file_EQ,
4466 options::OPT_fno_save_optimization_record, false)) {
4467 CmdArgs.push_back("-opt-record-file");
4468
4469 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4470 if (A) {
4471 CmdArgs.push_back(A->getValue());
4472 } else {
4473 SmallString<128> F;
4474
4475 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4476 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4477 F = FinalOutput->getValue();
4478 }
4479
4480 if (F.empty()) {
4481 // Use the input filename.
4482 F = llvm::sys::path::stem(Input.getBaseInput());
4483
4484 // If we're compiling for an offload architecture (i.e. a CUDA device),
4485 // we need to make the file name for the device compilation different
4486 // from the host compilation.
4487 if (!JA.isDeviceOffloading(Action::OFK_None) &&
4488 !JA.isDeviceOffloading(Action::OFK_Host)) {
4489 llvm::sys::path::replace_extension(F, "");
4490 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
4491 Triple.normalize());
4492 F += "-";
4493 F += JA.getOffloadingArch();
4494 }
4495 }
4496
4497 llvm::sys::path::replace_extension(F, "opt.yaml");
4498 CmdArgs.push_back(Args.MakeArgString(F));
4499 }
4500 }
4501
4502 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
4503 options::OPT_fno_rewrite_imports, false);
4504 if (RewriteImports)
4505 CmdArgs.push_back("-frewrite-imports");
4506
4507 // Enable rewrite includes if the user's asked for it or if we're generating
4508 // diagnostics.
4509 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4510 // nice to enable this when doing a crashdump for modules as well.
4511 if (Args.hasFlag(options::OPT_frewrite_includes,
4512 options::OPT_fno_rewrite_includes, false) ||
4513 (C.isForDiagnostics() && (RewriteImports || !HaveModules)))
4514 CmdArgs.push_back("-frewrite-includes");
4515
4516 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4517 if (Arg *A = Args.getLastArg(options::OPT_traditional,
4518 options::OPT_traditional_cpp)) {
4519 if (isa<PreprocessJobAction>(JA))
4520 CmdArgs.push_back("-traditional-cpp");
4521 else
4522 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4523 }
4524
4525 Args.AddLastArg(CmdArgs, options::OPT_dM);
4526 Args.AddLastArg(CmdArgs, options::OPT_dD);
4527
4528 // Handle serialized diagnostics.
4529 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4530 CmdArgs.push_back("-serialize-diagnostic-file");
4531 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4532 }
4533
4534 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4535 CmdArgs.push_back("-fretain-comments-from-system-headers");
4536
4537 // Forward -fcomment-block-commands to -cc1.
4538 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4539 // Forward -fparse-all-comments to -cc1.
4540 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4541
4542 // Turn -fplugin=name.so into -load name.so
4543 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4544 CmdArgs.push_back("-load");
4545 CmdArgs.push_back(A->getValue());
4546 A->claim();
4547 }
4548
4549 // Setup statistics file output.
4550 if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) {
4551 StringRef SaveStats = A->getValue();
4552
4553 SmallString<128> StatsFile;
4554 bool DoSaveStats = false;
4555 if (SaveStats == "obj") {
4556 if (Output.isFilename()) {
4557 StatsFile.assign(Output.getFilename());
4558 llvm::sys::path::remove_filename(StatsFile);
4559 }
4560 DoSaveStats = true;
4561 } else if (SaveStats == "cwd") {
4562 DoSaveStats = true;
4563 } else {
4564 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
4565 }
4566
4567 if (DoSaveStats) {
4568 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
4569 llvm::sys::path::append(StatsFile, BaseName);
4570 llvm::sys::path::replace_extension(StatsFile, "stats");
4571 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") +
4572 StatsFile));
4573 }
4574 }
4575
4576 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4577 // parser.
4578 // -finclude-default-header flag is for preprocessor,
4579 // do not pass it to other cc1 commands when save-temps is enabled
4580 if (C.getDriver().isSaveTempsEnabled() &&
4581 !isa<PreprocessJobAction>(JA)) {
4582 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4583 Arg->claim();
4584 if (StringRef(Arg->getValue()) != "-finclude-default-header")
4585 CmdArgs.push_back(Arg->getValue());
4586 }
4587 }
4588 else {
4589 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4590 }
4591 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4592 A->claim();
4593
4594 // We translate this by hand to the -cc1 argument, since nightly test uses
4595 // it and developers have been trained to spell it with -mllvm. Both
4596 // spellings are now deprecated and should be removed.
4597 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4598 CmdArgs.push_back("-disable-llvm-optzns");
4599 } else {
4600 A->render(Args, CmdArgs);
4601 }
4602 }
4603
4604 // With -save-temps, we want to save the unoptimized bitcode output from the
4605 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4606 // by the frontend.
4607 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4608 // has slightly different breakdown between stages.
4609 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4610 // pristine IR generated by the frontend. Ideally, a new compile action should
4611 // be added so both IR can be captured.
4612 if (C.getDriver().isSaveTempsEnabled() &&
4613 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4614 isa<CompileJobAction>(JA))
4615 CmdArgs.push_back("-disable-llvm-passes");
4616
4617 if (Output.getType() == types::TY_Dependencies) {
4618 // Handled with other dependency code.
4619 } else if (Output.isFilename()) {
4620 CmdArgs.push_back("-o");
4621 CmdArgs.push_back(Output.getFilename());
4622 } else {
4623 assert(Output.isNothing() && "Invalid output.")(static_cast <bool> (Output.isNothing() && "Invalid output."
) ? void (0) : __assert_fail ("Output.isNothing() && \"Invalid output.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 4623, __extension__ __PRETTY_FUNCTION__))
;
4624 }
4625
4626 addDashXForInput(Args, Input, CmdArgs);
4627
4628 if (Input.isFilename())
4629 CmdArgs.push_back(Input.getFilename());
4630 else
4631 Input.getInputArg().renderAsInput(Args, CmdArgs);
4632
4633 Args.AddAllArgs(CmdArgs, options::OPT_undef);
4634
4635 const char *Exec = D.getClangProgramPath();
4636
4637 // Optionally embed the -cc1 level arguments into the debug info, for build
4638 // analysis.
4639 // Also record command line arguments into the debug info if
4640 // -grecord-gcc-switches options is set on.
4641 // By default, -gno-record-gcc-switches is set on and no recording.
4642 if (getToolChain().UseDwarfDebugFlags() ||
4643 Args.hasFlag(options::OPT_grecord_gcc_switches,
4644 options::OPT_gno_record_gcc_switches, false)) {
4645 ArgStringList OriginalArgs;
4646 for (const auto &Arg : Args)
4647 Arg->render(Args, OriginalArgs);
4648
4649 SmallString<256> Flags;
4650 Flags += Exec;
4651 for (const char *OriginalArg : OriginalArgs) {
4652 SmallString<128> EscapedArg;
4653 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4654 Flags += " ";
4655 Flags += EscapedArg;
4656 }
4657 CmdArgs.push_back("-dwarf-debug-flags");
4658 CmdArgs.push_back(Args.MakeArgString(Flags));
4659 }
4660
4661 if (IsCuda) {
4662 // Host-side cuda compilation receives device-side outputs as Inputs[1...].
4663 // Include them with -fcuda-include-gpubinary.
4664 if (Inputs.size() > 1) {
4665 for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
4666 CmdArgs.push_back("-fcuda-include-gpubinary");
4667 CmdArgs.push_back(I->getFilename());
4668 }
4669 }
4670
4671 if (Args.hasFlag(options::OPT_fcuda_rdc, options::OPT_fno_cuda_rdc, false))
4672 CmdArgs.push_back("-fcuda-rdc");
4673 }
4674
4675 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4676 // to specify the result of the compile phase on the host, so the meaningful
4677 // device declarations can be identified. Also, -fopenmp-is-device is passed
4678 // along to tell the frontend that it is generating code for a device, so that
4679 // only the relevant declarations are emitted.
4680 if (IsOpenMPDevice) {
4681 CmdArgs.push_back("-fopenmp-is-device");
4682 if (Inputs.size() == 2) {
4683 CmdArgs.push_back("-fopenmp-host-ir-file-path");
4684 CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4685 }
4686 }
4687
4688 // For all the host OpenMP offloading compile jobs we need to pass the targets
4689 // information using -fopenmp-targets= option.
4690 if (isa<CompileJobAction>(JA) && JA.isHostOffloading(Action::OFK_OpenMP)) {
4691 SmallString<128> TargetInfo("-fopenmp-targets=");
4692
4693 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4694 assert(Tgts && Tgts->getNumValues() &&(static_cast <bool> (Tgts && Tgts->getNumValues
() && "OpenMP offloading has to have targets specified."
) ? void (0) : __assert_fail ("Tgts && Tgts->getNumValues() && \"OpenMP offloading has to have targets specified.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 4695, __extension__ __PRETTY_FUNCTION__))
4695 "OpenMP offloading has to have targets specified.")(static_cast <bool> (Tgts && Tgts->getNumValues
() && "OpenMP offloading has to have targets specified."
) ? void (0) : __assert_fail ("Tgts && Tgts->getNumValues() && \"OpenMP offloading has to have targets specified.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 4695, __extension__ __PRETTY_FUNCTION__))
;
4696 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4697 if (i)
4698 TargetInfo += ',';
4699 // We need to get the string from the triple because it may be not exactly
4700 // the same as the one we get directly from the arguments.
4701 llvm::Triple T(Tgts->getValue(i));
4702 TargetInfo += T.getTriple();
4703 }
4704 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4705 }
4706
4707 bool WholeProgramVTables =
4708 Args.hasFlag(options::OPT_fwhole_program_vtables,
4709 options::OPT_fno_whole_program_vtables, false);
4710 if (WholeProgramVTables) {
4711 if (!D.isUsingLTO())
4712 D.Diag(diag::err_drv_argument_only_allowed_with)
4713 << "-fwhole-program-vtables"
4714 << "-flto";
4715 CmdArgs.push_back("-fwhole-program-vtables");
4716 }
4717
4718 if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
4719 options::OPT_fno_experimental_isel)) {
4720 CmdArgs.push_back("-mllvm");
4721 if (A->getOption().matches(options::OPT_fexperimental_isel)) {
4722 CmdArgs.push_back("-global-isel=1");
4723
4724 // GISel is on by default on AArch64 -O0, so don't bother adding
4725 // the fallback remarks for it. Other combinations will add a warning of
4726 // some kind.
4727 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
4728 bool IsOptLevelSupported = false;
4729
4730 Arg *A = Args.getLastArg(options::OPT_O_Group);
4731 if (Triple.getArch() == llvm::Triple::aarch64) {
4732 if (!A || A->getOption().matches(options::OPT_O0))
4733 IsOptLevelSupported = true;
4734 }
4735 if (!IsArchSupported || !IsOptLevelSupported) {
4736 CmdArgs.push_back("-mllvm");
4737 CmdArgs.push_back("-global-isel-abort=2");
4738
4739 if (!IsArchSupported)
4740 D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
4741 else
4742 D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
4743 }
4744 } else {
4745 CmdArgs.push_back("-global-isel=0");
4746 }
4747 }
4748
4749 // Finally add the compile command to the compilation.
4750 if (Args.hasArg(options::OPT__SLASH_fallback) &&
4751 Output.getType() == types::TY_Object &&
4752 (InputType == types::TY_C || InputType == types::TY_CXX)) {
4753 auto CLCommand =
4754 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4755 C.addCommand(llvm::make_unique<FallbackCommand>(
4756 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4757 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4758 isa<PrecompileJobAction>(JA)) {
4759 // In /fallback builds, run the main compilation even if the pch generation
4760 // fails, so that the main compilation's fallback to cl.exe runs.
4761 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4762 CmdArgs, Inputs));
4763 } else {
4764 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4765 }
4766
4767 // Handle the debug info splitting at object creation time if we're
4768 // creating an object.
4769 // TODO: Currently only works on linux with newer objcopy.
4770 if (SplitDWARF && Output.getType() == types::TY_Object)
4771 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDWARFOut);
4772
4773 if (Arg *A = Args.getLastArg(options::OPT_pg))
4774 if (Args.hasArg(options::OPT_fomit_frame_pointer))
4775 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4776 << A->getAsString(Args);
4777
4778 // Claim some arguments which clang supports automatically.
4779
4780 // -fpch-preprocess is used with gcc to add a special marker in the output to
4781 // include the PCH file. Clang's PTH solution is completely transparent, so we
4782 // do not need to deal with it at all.
4783 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4784
4785 // Claim some arguments which clang doesn't support, but we don't
4786 // care to warn the user about.
4787 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4788 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4789
4790 // Disable warnings for clang -E -emit-llvm foo.c
4791 Args.ClaimAllArgs(options::OPT_emit_llvm);
4792}
4793
4794Clang::Clang(const ToolChain &TC)
4795 // CAUTION! The first constructor argument ("clang") is not arbitrary,
4796 // as it is for other tools. Some operations on a Tool actually test
4797 // whether that tool is Clang based on the Tool's Name as a string.
4798 : Tool("clang", "clang frontend", TC, RF_Full) {}
4799
4800Clang::~Clang() {}
4801
4802/// Add options related to the Objective-C runtime/ABI.
4803///
4804/// Returns true if the runtime is non-fragile.
4805ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4806 ArgStringList &cmdArgs,
4807 RewriteKind rewriteKind) const {
4808 // Look for the controlling runtime option.
4809 Arg *runtimeArg =
4810 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4811 options::OPT_fobjc_runtime_EQ);
4812
4813 // Just forward -fobjc-runtime= to the frontend. This supercedes
4814 // options about fragility.
4815 if (runtimeArg &&
4816 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4817 ObjCRuntime runtime;
4818 StringRef value = runtimeArg->getValue();
4819 if (runtime.tryParse(value)) {
4820 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4821 << value;
4822 }
4823
4824 runtimeArg->render(args, cmdArgs);
4825 return runtime;
4826 }
4827
4828 // Otherwise, we'll need the ABI "version". Version numbers are
4829 // slightly confusing for historical reasons:
4830 // 1 - Traditional "fragile" ABI
4831 // 2 - Non-fragile ABI, version 1
4832 // 3 - Non-fragile ABI, version 2
4833 unsigned objcABIVersion = 1;
4834 // If -fobjc-abi-version= is present, use that to set the version.
4835 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4836 StringRef value = abiArg->getValue();
4837 if (value == "1")
4838 objcABIVersion = 1;
4839 else if (value == "2")
4840 objcABIVersion = 2;
4841 else if (value == "3")
4842 objcABIVersion = 3;
4843 else
4844 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4845 } else {
4846 // Otherwise, determine if we are using the non-fragile ABI.
4847 bool nonFragileABIIsDefault =
4848 (rewriteKind == RK_NonFragile ||
4849 (rewriteKind == RK_None &&
4850 getToolChain().IsObjCNonFragileABIDefault()));
4851 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4852 options::OPT_fno_objc_nonfragile_abi,
4853 nonFragileABIIsDefault)) {
4854// Determine the non-fragile ABI version to use.
4855#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4856 unsigned nonFragileABIVersion = 1;
4857#else
4858 unsigned nonFragileABIVersion = 2;
4859#endif
4860
4861 if (Arg *abiArg =
4862 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4863 StringRef value = abiArg->getValue();
4864 if (value == "1")
4865 nonFragileABIVersion = 1;
4866 else if (value == "2")
4867 nonFragileABIVersion = 2;
4868 else
4869 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4870 << value;
4871 }
4872
4873 objcABIVersion = 1 + nonFragileABIVersion;
4874 } else {
4875 objcABIVersion = 1;
4876 }
4877 }
4878
4879 // We don't actually care about the ABI version other than whether
4880 // it's non-fragile.
4881 bool isNonFragile = objcABIVersion != 1;
4882
4883 // If we have no runtime argument, ask the toolchain for its default runtime.
4884 // However, the rewriter only really supports the Mac runtime, so assume that.
4885 ObjCRuntime runtime;
4886 if (!runtimeArg) {
4887 switch (rewriteKind) {
4888 case RK_None:
4889 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4890 break;
4891 case RK_Fragile:
4892 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
4893 break;
4894 case RK_NonFragile:
4895 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4896 break;
4897 }
4898
4899 // -fnext-runtime
4900 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4901 // On Darwin, make this use the default behavior for the toolchain.
4902 if (getToolChain().getTriple().isOSDarwin()) {
4903 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4904
4905 // Otherwise, build for a generic macosx port.
4906 } else {
4907 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4908 }
4909
4910 // -fgnu-runtime
4911 } else {
4912 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime))(static_cast <bool> (runtimeArg->getOption().matches
(options::OPT_fgnu_runtime)) ? void (0) : __assert_fail ("runtimeArg->getOption().matches(options::OPT_fgnu_runtime)"
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 4912, __extension__ __PRETTY_FUNCTION__))
;
4913 // Legacy behaviour is to target the gnustep runtime if we are in
4914 // non-fragile mode or the GCC runtime in fragile mode.
4915 if (isNonFragile)
4916 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6));
4917 else
4918 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
4919 }
4920
4921 cmdArgs.push_back(
4922 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
4923 return runtime;
4924}
4925
4926static bool maybeConsumeDash(const std::string &EH, size_t &I) {
4927 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
4928 I += HaveDash;
4929 return !HaveDash;
4930}
4931
4932namespace {
4933struct EHFlags {
4934 bool Synch = false;
4935 bool Asynch = false;
4936 bool NoUnwindC = false;
4937};
4938} // end anonymous namespace
4939
4940/// /EH controls whether to run destructor cleanups when exceptions are
4941/// thrown. There are three modifiers:
4942/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
4943/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
4944/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
4945/// - c: Assume that extern "C" functions are implicitly nounwind.
4946/// The default is /EHs-c-, meaning cleanups are disabled.
4947static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
4948 EHFlags EH;
4949
4950 std::vector<std::string> EHArgs =
4951 Args.getAllArgValues(options::OPT__SLASH_EH);
4952 for (auto EHVal : EHArgs) {
4953 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
4954 switch (EHVal[I]) {
4955 case 'a':
4956 EH.Asynch = maybeConsumeDash(EHVal, I);
4957 if (EH.Asynch)
4958 EH.Synch = false;
4959 continue;
4960 case 'c':
4961 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
4962 continue;
4963 case 's':
4964 EH.Synch = maybeConsumeDash(EHVal, I);
4965 if (EH.Synch)
4966 EH.Asynch = false;
4967 continue;
4968 default:
4969 break;
4970 }
4971 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
4972 break;
4973 }
4974 }
4975 // The /GX, /GX- flags are only processed if there are not /EH flags.
4976 // The default is that /GX is not specified.
4977 if (EHArgs.empty() &&
4978 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
4979 /*default=*/false)) {
4980 EH.Synch = true;
4981 EH.NoUnwindC = true;
4982 }
4983
4984 return EH;
4985}
4986
4987void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
4988 ArgStringList &CmdArgs,
4989 codegenoptions::DebugInfoKind *DebugInfoKind,
4990 bool *EmitCodeView) const {
4991 unsigned RTOptionID = options::OPT__SLASH_MT;
4992
4993 if (Args.hasArg(options::OPT__SLASH_LDd))
4994 // The /LDd option implies /MTd. The dependent lib part can be overridden,
4995 // but defining _DEBUG is sticky.
4996 RTOptionID = options::OPT__SLASH_MTd;
4997
4998 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4999 RTOptionID = A->getOption().getID();
5000
5001 StringRef FlagForCRT;
5002 switch (RTOptionID) {
5003 case options::OPT__SLASH_MD:
5004 if (Args.hasArg(options::OPT__SLASH_LDd))
5005 CmdArgs.push_back("-D_DEBUG");
5006 CmdArgs.push_back("-D_MT");
5007 CmdArgs.push_back("-D_DLL");
5008 FlagForCRT = "--dependent-lib=msvcrt";
5009 break;
5010 case options::OPT__SLASH_MDd:
5011 CmdArgs.push_back("-D_DEBUG");
5012 CmdArgs.push_back("-D_MT");
5013 CmdArgs.push_back("-D_DLL");
5014 FlagForCRT = "--dependent-lib=msvcrtd";
5015 break;
5016 case options::OPT__SLASH_MT:
5017 if (Args.hasArg(options::OPT__SLASH_LDd))
5018 CmdArgs.push_back("-D_DEBUG");
5019 CmdArgs.push_back("-D_MT");
5020 CmdArgs.push_back("-flto-visibility-public-std");
5021 FlagForCRT = "--dependent-lib=libcmt";
5022 break;
5023 case options::OPT__SLASH_MTd:
5024 CmdArgs.push_back("-D_DEBUG");
5025 CmdArgs.push_back("-D_MT");
5026 CmdArgs.push_back("-flto-visibility-public-std");
5027 FlagForCRT = "--dependent-lib=libcmtd";
5028 break;
5029 default:
5030 llvm_unreachable("Unexpected option ID.")::llvm::llvm_unreachable_internal("Unexpected option ID.", "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5030)
;
5031 }
5032
5033 if (Args.hasArg(options::OPT__SLASH_Zl)) {
5034 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5035 } else {
5036 CmdArgs.push_back(FlagForCRT.data());
5037
5038 // This provides POSIX compatibility (maps 'open' to '_open'), which most
5039 // users want. The /Za flag to cl.exe turns this off, but it's not
5040 // implemented in clang.
5041 CmdArgs.push_back("--dependent-lib=oldnames");
5042 }
5043
5044 // Both /showIncludes and /E (and /EP) write to stdout. Allowing both
5045 // would produce interleaved output, so ignore /showIncludes in such cases.
5046 if ((!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP)) ||
5047 (Args.hasArg(options::OPT__SLASH_P) &&
5048 Args.hasArg(options::OPT__SLASH_EP) && !Args.hasArg(options::OPT_E)))
5049 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
5050 A->render(Args, CmdArgs);
5051
5052 // This controls whether or not we emit RTTI data for polymorphic types.
5053 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5054 /*default=*/false))
5055 CmdArgs.push_back("-fno-rtti-data");
5056
5057 // This controls whether or not we emit stack-protector instrumentation.
5058 // In MSVC, Buffer Security Check (/GS) is on by default.
5059 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5060 /*default=*/true)) {
5061 CmdArgs.push_back("-stack-protector");
5062 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5063 }
5064
5065 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5066 if (Arg *DebugInfoArg =
5067 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5068 options::OPT_gline_tables_only)) {
5069 *EmitCodeView = true;
5070 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5071 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5072 else
5073 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5074 CmdArgs.push_back("-gcodeview");
5075 } else {
5076 *EmitCodeView = false;
5077 }
5078
5079 const Driver &D = getToolChain().getDriver();
5080 EHFlags EH = parseClangCLEHFlags(D, Args);
5081 if (EH.Synch || EH.Asynch) {
5082 if (types::isCXX(InputType))
5083 CmdArgs.push_back("-fcxx-exceptions");
5084 CmdArgs.push_back("-fexceptions");
5085 }
5086 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5087 CmdArgs.push_back("-fexternc-nounwind");
5088
5089 // /EP should expand to -E -P.
5090 if (Args.hasArg(options::OPT__SLASH_EP)) {
5091 CmdArgs.push_back("-E");
5092 CmdArgs.push_back("-P");
5093 }
5094
5095 unsigned VolatileOptionID;
5096 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5097 getToolChain().getArch() == llvm::Triple::x86)
5098 VolatileOptionID = options::OPT__SLASH_volatile_ms;
5099 else
5100 VolatileOptionID = options::OPT__SLASH_volatile_iso;
5101
5102 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5103 VolatileOptionID = A->getOption().getID();
5104
5105 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5106 CmdArgs.push_back("-fms-volatile");
5107
5108 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5109 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5110 if (MostGeneralArg && BestCaseArg)
5111 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5112 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5113
5114 if (MostGeneralArg) {
5115 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5116 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5117 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5118
5119 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5120 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5121 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5122 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5123 << FirstConflict->getAsString(Args)
5124 << SecondConflict->getAsString(Args);
5125
5126 if (SingleArg)
5127 CmdArgs.push_back("-fms-memptr-rep=single");
5128 else if (MultipleArg)
5129 CmdArgs.push_back("-fms-memptr-rep=multiple");
5130 else
5131 CmdArgs.push_back("-fms-memptr-rep=virtual");
5132 }
5133
5134 // Parse the default calling convention options.
5135 if (Arg *CCArg =
5136 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5137 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5138 options::OPT__SLASH_Gregcall)) {
5139 unsigned DCCOptId = CCArg->getOption().getID();
5140 const char *DCCFlag = nullptr;
5141 bool ArchSupported = true;
5142 llvm::Triple::ArchType Arch = getToolChain().getArch();
5143 switch (DCCOptId) {
5144 case options::OPT__SLASH_Gd:
5145 DCCFlag = "-fdefault-calling-conv=cdecl";
5146 break;
5147 case options::OPT__SLASH_Gr:
5148 ArchSupported = Arch == llvm::Triple::x86;
5149 DCCFlag = "-fdefault-calling-conv=fastcall";
5150 break;
5151 case options::OPT__SLASH_Gz:
5152 ArchSupported = Arch == llvm::Triple::x86;
5153 DCCFlag = "-fdefault-calling-conv=stdcall";
5154 break;
5155 case options::OPT__SLASH_Gv:
5156 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5157 DCCFlag = "-fdefault-calling-conv=vectorcall";
5158 break;
5159 case options::OPT__SLASH_Gregcall:
5160 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5161 DCCFlag = "-fdefault-calling-conv=regcall";
5162 break;
5163 }
5164
5165 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5166 if (ArchSupported && DCCFlag)
5167 CmdArgs.push_back(DCCFlag);
5168 }
5169
5170 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5171 A->render(Args, CmdArgs);
5172
5173 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5174 CmdArgs.push_back("-fdiagnostics-format");
5175 if (Args.hasArg(options::OPT__SLASH_fallback))
5176 CmdArgs.push_back("msvc-fallback");
5177 else
5178 CmdArgs.push_back("msvc");
5179 }
5180
5181 if (Args.hasArg(options::OPT__SLASH_Guard) &&
5182 Args.getLastArgValue(options::OPT__SLASH_Guard).equals_lower("cf"))
5183 CmdArgs.push_back("-cfguard");
5184}
5185
5186visualstudio::Compiler *Clang::getCLFallback() const {
5187 if (!CLFallback)
5188 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5189 return CLFallback.get();
5190}
5191
5192
5193const char *Clang::getBaseInputName(const ArgList &Args,
5194 const InputInfo &Input) {
5195 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5196}
5197
5198const char *Clang::getBaseInputStem(const ArgList &Args,
5199 const InputInfoList &Inputs) {
5200 const char *Str = getBaseInputName(Args, Inputs[0]);
5201
5202 if (const char *End = strrchr(Str, '.'))
5203 return Args.MakeArgString(std::string(Str, End));
5204
5205 return Str;
5206}
5207
5208const char *Clang::getDependencyFileName(const ArgList &Args,
5209 const InputInfoList &Inputs) {
5210 // FIXME: Think about this more.
5211 std::string Res;
5212
5213 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5214 std::string Str(OutputOpt->getValue());
5215 Res = Str.substr(0, Str.rfind('.'));
5216 } else {
5217 Res = getBaseInputStem(Args, Inputs);
5218 }
5219 return Args.MakeArgString(Res + ".d");
5220}
5221
5222// Begin ClangAs
5223
5224void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5225 ArgStringList &CmdArgs) const {
5226 StringRef CPUName;
5227 StringRef ABIName;
5228 const llvm::Triple &Triple = getToolChain().getTriple();
5229 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5230
5231 CmdArgs.push_back("-target-abi");
5232 CmdArgs.push_back(ABIName.data());
5233}
5234
5235void ClangAs::AddX86TargetArgs(const ArgList &Args,
5236 ArgStringList &CmdArgs) const {
5237 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5238 StringRef Value = A->getValue();
5239 if (Value == "intel" || Value == "att") {
5240 CmdArgs.push_back("-mllvm");
5241 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5242 } else {
5243 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5244 << A->getOption().getName() << Value;
5245 }
5246 }
5247}
5248
5249void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
5250 const InputInfo &Output, const InputInfoList &Inputs,
5251 const ArgList &Args,
5252 const char *LinkingOutput) const {
5253 ArgStringList CmdArgs;
5254
5255 assert(Inputs.size() == 1 && "Unexpected number of inputs.")(static_cast <bool> (Inputs.size() == 1 && "Unexpected number of inputs."
) ? void (0) : __assert_fail ("Inputs.size() == 1 && \"Unexpected number of inputs.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5255, __extension__ __PRETTY_FUNCTION__))
;
5256 const InputInfo &Input = Inputs[0];
5257
5258 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5259 const std::string &TripleStr = Triple.getTriple();
5260 const auto &D = getToolChain().getDriver();
5261
5262 // Don't warn about "clang -w -c foo.s"
5263 Args.ClaimAllArgs(options::OPT_w);
5264 // and "clang -emit-llvm -c foo.s"
5265 Args.ClaimAllArgs(options::OPT_emit_llvm);
5266
5267 claimNoWarnArgs(Args);
5268
5269 // Invoke ourselves in -cc1as mode.
5270 //
5271 // FIXME: Implement custom jobs for internal actions.
5272 CmdArgs.push_back("-cc1as");
5273
5274 // Add the "effective" target triple.
5275 CmdArgs.push_back("-triple");
5276 CmdArgs.push_back(Args.MakeArgString(TripleStr));
5277
5278 // Set the output mode, we currently only expect to be used as a real
5279 // assembler.
5280 CmdArgs.push_back("-filetype");
5281 CmdArgs.push_back("obj");
5282
5283 // Set the main file name, so that debug info works even with
5284 // -save-temps or preprocessed assembly.
5285 CmdArgs.push_back("-main-file-name");
5286 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5287
5288 // Add the target cpu
5289 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5290 if (!CPU.empty()) {
5291 CmdArgs.push_back("-target-cpu");
5292 CmdArgs.push_back(Args.MakeArgString(CPU));
5293 }
5294
5295 // Add the target features
5296 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5297
5298 // Ignore explicit -force_cpusubtype_ALL option.
5299 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5300
5301 // Pass along any -I options so we get proper .include search paths.
5302 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5303
5304 // Determine the original source input.
5305 const Action *SourceAction = &JA;
5306 while (SourceAction->getKind() != Action::InputClass) {
5307 assert(!SourceAction->getInputs().empty() && "unexpected root action!")(static_cast <bool> (!SourceAction->getInputs().empty
() && "unexpected root action!") ? void (0) : __assert_fail
("!SourceAction->getInputs().empty() && \"unexpected root action!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5307, __extension__ __PRETTY_FUNCTION__))
;
5308 SourceAction = SourceAction->getInputs()[0];
5309 }
5310
5311 // Forward -g and handle debug info related flags, assuming we are dealing
5312 // with an actual assembly file.
5313 bool WantDebug = false;
5314 unsigned DwarfVersion = 0;
5315 Args.ClaimAllArgs(options::OPT_g_Group);
5316 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5317 WantDebug = !A->getOption().matches(options::OPT_g0) &&
5318 !A->getOption().matches(options::OPT_ggdb0);
5319 if (WantDebug)
5320 DwarfVersion = DwarfVersionNum(A->getSpelling());
5321 }
5322 if (DwarfVersion == 0)
5323 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5324
5325 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
5326
5327 if (SourceAction->getType() == types::TY_Asm ||
5328 SourceAction->getType() == types::TY_PP_Asm) {
5329 // You might think that it would be ok to set DebugInfoKind outside of
5330 // the guard for source type, however there is a test which asserts
5331 // that some assembler invocation receives no -debug-info-kind,
5332 // and it's not clear whether that test is just overly restrictive.
5333 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5334 : codegenoptions::NoDebugInfo);
5335 // Add the -fdebug-compilation-dir flag if needed.
5336 addDebugCompDirArg(Args, CmdArgs);
5337
5338 // Set the AT_producer to the clang version when using the integrated
5339 // assembler on assembly source files.
5340 CmdArgs.push_back("-dwarf-debug-producer");
5341 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5342
5343 // And pass along -I options
5344 Args.AddAllArgs(CmdArgs, options::OPT_I);
5345 }
5346 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5347 llvm::DebuggerKind::Default);
5348 RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
5349
5350
5351 // Handle -fPIC et al -- the relocation-model affects the assembler
5352 // for some targets.
5353 llvm::Reloc::Model RelocationModel;
5354 unsigned PICLevel;
5355 bool IsPIE;
5356 std::tie(RelocationModel, PICLevel, IsPIE) =
5357 ParsePICArgs(getToolChain(), Args);
5358
5359 const char *RMName = RelocationModelName(RelocationModel);
5360 if (RMName) {
5361 CmdArgs.push_back("-mrelocation-model");
5362 CmdArgs.push_back(RMName);
5363 }
5364
5365 // Optionally embed the -cc1as level arguments into the debug info, for build
5366 // analysis.
5367 if (getToolChain().UseDwarfDebugFlags()) {
5368 ArgStringList OriginalArgs;
5369 for (const auto &Arg : Args)
5370 Arg->render(Args, OriginalArgs);
5371
5372 SmallString<256> Flags;
5373 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5374 Flags += Exec;
5375 for (const char *OriginalArg : OriginalArgs) {
5376 SmallString<128> EscapedArg;
5377 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5378 Flags += " ";
5379 Flags += EscapedArg;
5380 }
5381 CmdArgs.push_back("-dwarf-debug-flags");
5382 CmdArgs.push_back(Args.MakeArgString(Flags));
5383 }
5384
5385 // FIXME: Add -static support, once we have it.
5386
5387 // Add target specific flags.
5388 switch (getToolChain().getArch()) {
5389 default:
5390 break;
5391
5392 case llvm::Triple::mips:
5393 case llvm::Triple::mipsel:
5394 case llvm::Triple::mips64:
5395 case llvm::Triple::mips64el:
5396 AddMIPSTargetArgs(Args, CmdArgs);
5397 break;
5398
5399 case llvm::Triple::x86:
5400 case llvm::Triple::x86_64:
5401 AddX86TargetArgs(Args, CmdArgs);
5402 break;
5403
5404 case llvm::Triple::arm:
5405 case llvm::Triple::armeb:
5406 case llvm::Triple::thumb:
5407 case llvm::Triple::thumbeb:
5408 // This isn't in AddARMTargetArgs because we want to do this for assembly
5409 // only, not C/C++.
5410 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5411 options::OPT_mno_default_build_attributes, true)) {
5412 CmdArgs.push_back("-mllvm");
5413 CmdArgs.push_back("-arm-add-build-attributes");
5414 }
5415 break;
5416 }
5417
5418 // Consume all the warning flags. Usually this would be handled more
5419 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5420 // doesn't handle that so rather than warning about unused flags that are
5421 // actually used, we'll lie by omission instead.
5422 // FIXME: Stop lying and consume only the appropriate driver flags
5423 Args.ClaimAllArgs(options::OPT_W_Group);
5424
5425 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5426 getToolChain().getDriver());
5427
5428 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5429
5430 assert(Output.isFilename() && "Unexpected lipo output.")(static_cast <bool> (Output.isFilename() && "Unexpected lipo output."
) ? void (0) : __assert_fail ("Output.isFilename() && \"Unexpected lipo output.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5430, __extension__ __PRETTY_FUNCTION__))
;
5431 CmdArgs.push_back("-o");
5432 CmdArgs.push_back(Output.getFilename());
5433
5434 assert(Input.isFilename() && "Invalid input.")(static_cast <bool> (Input.isFilename() && "Invalid input."
) ? void (0) : __assert_fail ("Input.isFilename() && \"Invalid input.\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5434, __extension__ __PRETTY_FUNCTION__))
;
5435 CmdArgs.push_back(Input.getFilename());
5436
5437 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5438 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5439
5440 // Handle the debug info splitting at object creation time if we're
5441 // creating an object.
5442 // TODO: Currently only works on linux with newer objcopy.
5443 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5444 getToolChain().getTriple().isOSLinux())
5445 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
5446 SplitDebugName(Args, Input));
5447}
5448
5449// Begin OffloadBundler
5450
5451void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
5452 const InputInfo &Output,
5453 const InputInfoList &Inputs,
5454 const llvm::opt::ArgList &TCArgs,
5455 const char *LinkingOutput) const {
5456 // The version with only one output is expected to refer to a bundling job.
5457 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!")(static_cast <bool> (isa<OffloadBundlingJobAction>
(JA) && "Expecting bundling job!") ? void (0) : __assert_fail
("isa<OffloadBundlingJobAction>(JA) && \"Expecting bundling job!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5457, __extension__ __PRETTY_FUNCTION__))
;
5458
5459 // The bundling command looks like this:
5460 // clang-offload-bundler -type=bc
5461 // -targets=host-triple,openmp-triple1,openmp-triple2
5462 // -outputs=input_file
5463 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5464
5465 ArgStringList CmdArgs;
5466
5467 // Get the type.
5468 CmdArgs.push_back(TCArgs.MakeArgString(
5469 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5470
5471 assert(JA.getInputs().size() == Inputs.size() &&(static_cast <bool> (JA.getInputs().size() == Inputs.size
() && "Not have inputs for all dependence actions??")
? void (0) : __assert_fail ("JA.getInputs().size() == Inputs.size() && \"Not have inputs for all dependence actions??\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5472, __extension__ __PRETTY_FUNCTION__))
5472 "Not have inputs for all dependence actions??")(static_cast <bool> (JA.getInputs().size() == Inputs.size
() && "Not have inputs for all dependence actions??")
? void (0) : __assert_fail ("JA.getInputs().size() == Inputs.size() && \"Not have inputs for all dependence actions??\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5472, __extension__ __PRETTY_FUNCTION__))
;
5473
5474 // Get the targets.
5475 SmallString<128> Triples;
5476 Triples += "-targets=";
5477 for (unsigned I = 0; I < Inputs.size(); ++I) {
5478 if (I)
5479 Triples += ',';
5480
5481 // Find ToolChain for this input.
5482 Action::OffloadKind CurKind = Action::OFK_Host;
5483 const ToolChain *CurTC = &getToolChain();
5484 const Action *CurDep = JA.getInputs()[I];
5485
5486 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5487 CurTC = nullptr;
5488 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5489 assert(CurTC == nullptr && "Expected one dependence!")(static_cast <bool> (CurTC == nullptr && "Expected one dependence!"
) ? void (0) : __assert_fail ("CurTC == nullptr && \"Expected one dependence!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5489, __extension__ __PRETTY_FUNCTION__))
;
5490 CurKind = A->getOffloadingDeviceKind();
5491 CurTC = TC;
5492 });
5493 }
5494 Triples += Action::GetOffloadKindName(CurKind);
5495 Triples += '-';
5496 Triples += CurTC->getTriple().normalize();
5497 }
5498 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5499
5500 // Get bundled file command.
5501 CmdArgs.push_back(
5502 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5503
5504 // Get unbundled files command.
5505 SmallString<128> UB;
5506 UB += "-inputs=";
5507 for (unsigned I = 0; I < Inputs.size(); ++I) {
5508 if (I)
5509 UB += ',';
5510
5511 // Find ToolChain for this input.
5512 const ToolChain *CurTC = &getToolChain();
5513 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
5514 CurTC = nullptr;
5515 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
5516 assert(CurTC == nullptr && "Expected one dependence!")(static_cast <bool> (CurTC == nullptr && "Expected one dependence!"
) ? void (0) : __assert_fail ("CurTC == nullptr && \"Expected one dependence!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5516, __extension__ __PRETTY_FUNCTION__))
;
5517 CurTC = TC;
5518 });
5519 }
5520 UB += CurTC->getInputFilename(Inputs[I]);
5521 }
5522 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5523
5524 // All the inputs are encoded as commands.
5525 C.addCommand(llvm::make_unique<Command>(
5526 JA, *this,
5527 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5528 CmdArgs, None));
5529}
5530
5531void OffloadBundler::ConstructJobMultipleOutputs(
5532 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5533 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5534 const char *LinkingOutput) const {
5535 // The version with multiple outputs is expected to refer to a unbundling job.
5536 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5537
5538 // The unbundling command looks like this:
5539 // clang-offload-bundler -type=bc
5540 // -targets=host-triple,openmp-triple1,openmp-triple2
5541 // -inputs=input_file
5542 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5543 // -unbundle
5544
5545 ArgStringList CmdArgs;
5546
5547 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!")(static_cast <bool> (Inputs.size() == 1 && "Expecting to unbundle a single file!"
) ? void (0) : __assert_fail ("Inputs.size() == 1 && \"Expecting to unbundle a single file!\""
, "/build/llvm-toolchain-snapshot-7~svn325118/tools/clang/lib/Driver/ToolChains/Clang.cpp"
, 5547, __extension__ __PRETTY_FUNCTION__))
;
5548 InputInfo Input = Inputs.front();
5549
5550 // Get the type.
5551 CmdArgs.push_back(TCArgs.MakeArgString(
5552 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5553
5554 // Get the targets.
5555 SmallString<128> Triples;
5556 Triples += "-targets=";
5557 auto DepInfo = UA.getDependentActionsInfo();
5558 for (unsigned I = 0; I < DepInfo.size(); ++I) {
5559 if (I)
5560 Triples += ',';
5561
5562 auto &Dep = DepInfo[I];
5563 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5564 Triples += '-';
5565 Triples += Dep.DependentToolChain->getTriple().normalize();
5566 }
5567
5568 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5569
5570 // Get bundled file command.
5571 CmdArgs.push_back(
5572 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5573
5574 // Get unbundled files command.
5575 SmallString<128> UB;
5576 UB += "-outputs=";
5577 for (unsigned I = 0; I < Outputs.size(); ++I) {
5578 if (I)
5579 UB += ',';
5580 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
5581 }
5582 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5583 CmdArgs.push_back("-unbundle");
5584
5585 // All the inputs are encoded as commands.
5586 C.addCommand(llvm::make_unique<Command>(
5587 JA, *this,
5588 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5589 CmdArgs, None));
5590}