Bug Summary

File:clang/lib/Driver/ToolChains/MinGW.cpp
Warning:line 172, column 5
Value stored to 'OutputFile' is never read

Annotated Source Code

Press '?' to see keyboard shortcuts

clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name MinGW.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-12/lib/clang/12.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/build-llvm/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/clang/lib/Driver -I /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/clang/include -I /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/build-llvm/include -I /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-12/lib/clang/12.0.0/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++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/build-llvm/tools/clang/lib/Driver -fdebug-prefix-map=/build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d=. -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-11-29-190409-37574-1 -x c++ /build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/clang/lib/Driver/ToolChains/MinGW.cpp
1//===--- MinGW.cpp - MinGWToolChain Implementation ------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "MinGW.h"
10#include "InputInfo.h"
11#include "CommonArgs.h"
12#include "clang/Config/config.h"
13#include "clang/Driver/Compilation.h"
14#include "clang/Driver/Driver.h"
15#include "clang/Driver/DriverDiagnostic.h"
16#include "clang/Driver/Options.h"
17#include "clang/Driver/SanitizerArgs.h"
18#include "llvm/Option/ArgList.h"
19#include "llvm/Support/FileSystem.h"
20#include "llvm/Support/Path.h"
21#include "llvm/Support/VirtualFileSystem.h"
22#include <system_error>
23
24using namespace clang::diag;
25using namespace clang::driver;
26using namespace clang;
27using namespace llvm::opt;
28
29/// MinGW Tools
30void tools::MinGW::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
31 const InputInfo &Output,
32 const InputInfoList &Inputs,
33 const ArgList &Args,
34 const char *LinkingOutput) const {
35 claimNoWarnArgs(Args);
36 ArgStringList CmdArgs;
37
38 if (getToolChain().getArch() == llvm::Triple::x86) {
39 CmdArgs.push_back("--32");
40 } else if (getToolChain().getArch() == llvm::Triple::x86_64) {
41 CmdArgs.push_back("--64");
42 }
43
44 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
45
46 CmdArgs.push_back("-o");
47 CmdArgs.push_back(Output.getFilename());
48
49 for (const auto &II : Inputs)
50 CmdArgs.push_back(II.getFilename());
51
52 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
53 C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
54 Exec, CmdArgs, Inputs, Output));
55
56 if (Args.hasArg(options::OPT_gsplit_dwarf))
57 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
58 SplitDebugName(JA, Args, Inputs[0], Output));
59}
60
61void tools::MinGW::Linker::AddLibGCC(const ArgList &Args,
62 ArgStringList &CmdArgs) const {
63 if (Args.hasArg(options::OPT_mthreads))
64 CmdArgs.push_back("-lmingwthrd");
65 CmdArgs.push_back("-lmingw32");
66
67 // Make use of compiler-rt if --rtlib option is used
68 ToolChain::RuntimeLibType RLT = getToolChain().GetRuntimeLibType(Args);
69 if (RLT == ToolChain::RLT_Libgcc) {
70 bool Static = Args.hasArg(options::OPT_static_libgcc) ||
71 Args.hasArg(options::OPT_static);
72 bool Shared = Args.hasArg(options::OPT_shared);
73 bool CXX = getToolChain().getDriver().CCCIsCXX();
74
75 if (Static || (!CXX && !Shared)) {
76 CmdArgs.push_back("-lgcc");
77 CmdArgs.push_back("-lgcc_eh");
78 } else {
79 CmdArgs.push_back("-lgcc_s");
80 CmdArgs.push_back("-lgcc");
81 }
82 } else {
83 AddRunTimeLibs(getToolChain(), getToolChain().getDriver(), CmdArgs, Args);
84 }
85
86 CmdArgs.push_back("-lmoldname");
87 CmdArgs.push_back("-lmingwex");
88 for (auto Lib : Args.getAllArgValues(options::OPT_l))
89 if (StringRef(Lib).startswith("msvcr") || StringRef(Lib).startswith("ucrt"))
90 return;
91 CmdArgs.push_back("-lmsvcrt");
92}
93
94void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
95 const InputInfo &Output,
96 const InputInfoList &Inputs,
97 const ArgList &Args,
98 const char *LinkingOutput) const {
99 const ToolChain &TC = getToolChain();
100 const Driver &D = TC.getDriver();
101 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
102
103 ArgStringList CmdArgs;
104
105 // Silence warning for "clang -g foo.o -o foo"
106 Args.ClaimAllArgs(options::OPT_g_Group);
107 // and "clang -emit-llvm foo.o -o foo"
108 Args.ClaimAllArgs(options::OPT_emit_llvm);
109 // and for "clang -w foo.o -o foo". Other warning options are already
110 // handled somewhere else.
111 Args.ClaimAllArgs(options::OPT_w);
112
113 if (!D.SysRoot.empty())
114 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
115
116 if (Args.hasArg(options::OPT_s))
117 CmdArgs.push_back("-s");
118
119 CmdArgs.push_back("-m");
120 switch (TC.getArch()) {
121 case llvm::Triple::x86:
122 CmdArgs.push_back("i386pe");
123 break;
124 case llvm::Triple::x86_64:
125 CmdArgs.push_back("i386pep");
126 break;
127 case llvm::Triple::arm:
128 case llvm::Triple::thumb:
129 // FIXME: this is incorrect for WinCE
130 CmdArgs.push_back("thumb2pe");
131 break;
132 case llvm::Triple::aarch64:
133 CmdArgs.push_back("arm64pe");
134 break;
135 default:
136 llvm_unreachable("Unsupported target architecture.")::llvm::llvm_unreachable_internal("Unsupported target architecture."
, "/build/llvm-toolchain-snapshot-12~++20201129111111+e987fbdd85d/clang/lib/Driver/ToolChains/MinGW.cpp"
, 136)
;
137 }
138
139 if (Args.hasArg(options::OPT_mwindows)) {
140 CmdArgs.push_back("--subsystem");
141 CmdArgs.push_back("windows");
142 } else if (Args.hasArg(options::OPT_mconsole)) {
143 CmdArgs.push_back("--subsystem");
144 CmdArgs.push_back("console");
145 }
146
147 if (Args.hasArg(options::OPT_mdll))
148 CmdArgs.push_back("--dll");
149 else if (Args.hasArg(options::OPT_shared))
150 CmdArgs.push_back("--shared");
151 if (Args.hasArg(options::OPT_static))
152 CmdArgs.push_back("-Bstatic");
153 else
154 CmdArgs.push_back("-Bdynamic");
155 if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {
156 CmdArgs.push_back("-e");
157 if (TC.getArch() == llvm::Triple::x86)
158 CmdArgs.push_back("_DllMainCRTStartup@12");
159 else
160 CmdArgs.push_back("DllMainCRTStartup");
161 CmdArgs.push_back("--enable-auto-image-base");
162 }
163
164 CmdArgs.push_back("-o");
165 const char *OutputFile = Output.getFilename();
166 // GCC implicitly adds an .exe extension if it is given an output file name
167 // that lacks an extension.
168 // GCC used to do this only when the compiler itself runs on windows, but
169 // since GCC 8 it does the same when cross compiling as well.
170 if (!llvm::sys::path::has_extension(OutputFile)) {
171 CmdArgs.push_back(Args.MakeArgString(Twine(OutputFile) + ".exe"));
172 OutputFile = CmdArgs.back();
Value stored to 'OutputFile' is never read
173 } else
174 CmdArgs.push_back(OutputFile);
175
176 Args.AddAllArgs(CmdArgs, options::OPT_e);
177 // FIXME: add -N, -n flags
178 Args.AddLastArg(CmdArgs, options::OPT_r);
179 Args.AddLastArg(CmdArgs, options::OPT_s);
180 Args.AddLastArg(CmdArgs, options::OPT_t);
181 Args.AddAllArgs(CmdArgs, options::OPT_u_Group);
182 Args.AddLastArg(CmdArgs, options::OPT_Z_Flag);
183
184 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
185 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_mdll)) {
186 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("dllcrt2.o")));
187 } else {
188 if (Args.hasArg(options::OPT_municode))
189 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2u.o")));
190 else
191 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2.o")));
192 }
193 if (Args.hasArg(options::OPT_pg))
194 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("gcrt2.o")));
195 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
196 }
197
198 Args.AddAllArgs(CmdArgs, options::OPT_L);
199 TC.AddFilePathLibArgs(Args, CmdArgs);
200
201 // Add the compiler-rt library directories if they exist to help
202 // the linker find the various sanitizer, builtin, and profiling runtimes.
203 for (const auto &LibPath : TC.getLibraryPaths()) {
204 if (TC.getVFS().exists(LibPath))
205 CmdArgs.push_back(Args.MakeArgString("-L" + LibPath));
206 }
207 auto CRTPath = TC.getCompilerRTPath();
208 if (TC.getVFS().exists(CRTPath))
209 CmdArgs.push_back(Args.MakeArgString("-L" + CRTPath));
210
211 AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA);
212
213 // TODO: Add profile stuff here
214
215 if (TC.ShouldLinkCXXStdlib(Args)) {
216 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
217 !Args.hasArg(options::OPT_static);
218 if (OnlyLibstdcxxStatic)
219 CmdArgs.push_back("-Bstatic");
220 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
221 if (OnlyLibstdcxxStatic)
222 CmdArgs.push_back("-Bdynamic");
223 }
224
225 bool HasWindowsApp = false;
226 for (auto Lib : Args.getAllArgValues(options::OPT_l)) {
227 if (Lib == "windowsapp") {
228 HasWindowsApp = true;
229 break;
230 }
231 }
232
233 if (!Args.hasArg(options::OPT_nostdlib)) {
234 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
235 if (Args.hasArg(options::OPT_static))
236 CmdArgs.push_back("--start-group");
237
238 if (Args.hasArg(options::OPT_fstack_protector) ||
239 Args.hasArg(options::OPT_fstack_protector_strong) ||
240 Args.hasArg(options::OPT_fstack_protector_all)) {
241 CmdArgs.push_back("-lssp_nonshared");
242 CmdArgs.push_back("-lssp");
243 }
244
245 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
246 options::OPT_fno_openmp, false)) {
247 switch (TC.getDriver().getOpenMPRuntime(Args)) {
248 case Driver::OMPRT_OMP:
249 CmdArgs.push_back("-lomp");
250 break;
251 case Driver::OMPRT_IOMP5:
252 CmdArgs.push_back("-liomp5md");
253 break;
254 case Driver::OMPRT_GOMP:
255 CmdArgs.push_back("-lgomp");
256 break;
257 case Driver::OMPRT_Unknown:
258 // Already diagnosed.
259 break;
260 }
261 }
262
263 AddLibGCC(Args, CmdArgs);
264
265 if (Args.hasArg(options::OPT_pg))
266 CmdArgs.push_back("-lgmon");
267
268 if (Args.hasArg(options::OPT_pthread))
269 CmdArgs.push_back("-lpthread");
270
271 if (Sanitize.needsAsanRt()) {
272 // MinGW always links against a shared MSVCRT.
273 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dynamic",
274 ToolChain::FT_Shared));
275 CmdArgs.push_back(
276 TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));
277 CmdArgs.push_back("--require-defined");
278 CmdArgs.push_back(TC.getArch() == llvm::Triple::x86
279 ? "___asan_seh_interceptor"
280 : "__asan_seh_interceptor");
281 // Make sure the linker consider all object files from the dynamic
282 // runtime thunk.
283 CmdArgs.push_back("--whole-archive");
284 CmdArgs.push_back(
285 TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));
286 CmdArgs.push_back("--no-whole-archive");
287 }
288
289 TC.addProfileRTLibs(Args, CmdArgs);
290
291 if (!HasWindowsApp) {
292 // Add system libraries. If linking to libwindowsapp.a, that import
293 // library replaces all these and we shouldn't accidentally try to
294 // link to the normal desktop mode dlls.
295 if (Args.hasArg(options::OPT_mwindows)) {
296 CmdArgs.push_back("-lgdi32");
297 CmdArgs.push_back("-lcomdlg32");
298 }
299 CmdArgs.push_back("-ladvapi32");
300 CmdArgs.push_back("-lshell32");
301 CmdArgs.push_back("-luser32");
302 CmdArgs.push_back("-lkernel32");
303 }
304
305 if (Args.hasArg(options::OPT_static)) {
306 CmdArgs.push_back("--end-group");
307 } else {
308 AddLibGCC(Args, CmdArgs);
309 if (!HasWindowsApp)
310 CmdArgs.push_back("-lkernel32");
311 }
312 }
313
314 if (!Args.hasArg(options::OPT_nostartfiles)) {
315 // Add crtfastmath.o if available and fast math is enabled.
316 TC.addFastMathRuntimeIfAvailable(Args, CmdArgs);
317
318 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
319 }
320 }
321 const char *Exec = Args.MakeArgString(TC.GetLinkerPath());
322 C.addCommand(std::make_unique<Command>(JA, *this,
323 ResponseFileSupport::AtFileUTF8(),
324 Exec, CmdArgs, Inputs, Output));
325}
326
327// Simplified from Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple.
328static bool findGccVersion(StringRef LibDir, std::string &GccLibDir,
329 std::string &Ver) {
330 auto Version = toolchains::Generic_GCC::GCCVersion::Parse("0.0.0");
331 std::error_code EC;
332 for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE; !EC && LI != LE;
333 LI = LI.increment(EC)) {
334 StringRef VersionText = llvm::sys::path::filename(LI->path());
335 auto CandidateVersion =
336 toolchains::Generic_GCC::GCCVersion::Parse(VersionText);
337 if (CandidateVersion.Major == -1)
338 continue;
339 if (CandidateVersion <= Version)
340 continue;
341 Ver = std::string(VersionText);
342 GccLibDir = LI->path();
343 }
344 return Ver.size();
345}
346
347void toolchains::MinGW::findGccLibDir() {
348 llvm::SmallVector<llvm::SmallString<32>, 2> Archs;
349 Archs.emplace_back(getTriple().getArchName());
350 Archs[0] += "-w64-mingw32";
351 Archs.emplace_back("mingw32");
352 if (Arch.empty())
353 Arch = std::string(Archs[0].str());
354 // lib: Arch Linux, Ubuntu, Windows
355 // lib64: openSUSE Linux
356 for (StringRef CandidateLib : {"lib", "lib64"}) {
357 for (StringRef CandidateArch : Archs) {
358 llvm::SmallString<1024> LibDir(Base);
359 llvm::sys::path::append(LibDir, CandidateLib, "gcc", CandidateArch);
360 if (findGccVersion(LibDir, GccLibDir, Ver)) {
361 Arch = std::string(CandidateArch);
362 return;
363 }
364 }
365 }
366}
367
368llvm::ErrorOr<std::string> toolchains::MinGW::findGcc() {
369 llvm::SmallVector<llvm::SmallString<32>, 2> Gccs;
370 Gccs.emplace_back(getTriple().getArchName());
371 Gccs[0] += "-w64-mingw32-gcc";
372 Gccs.emplace_back("mingw32-gcc");
373 // Please do not add "gcc" here
374 for (StringRef CandidateGcc : Gccs)
375 if (llvm::ErrorOr<std::string> GPPName = llvm::sys::findProgramByName(CandidateGcc))
376 return GPPName;
377 return make_error_code(std::errc::no_such_file_or_directory);
378}
379
380llvm::ErrorOr<std::string> toolchains::MinGW::findClangRelativeSysroot() {
381 llvm::SmallVector<llvm::SmallString<32>, 2> Subdirs;
382 Subdirs.emplace_back(getTriple().str());
383 Subdirs.emplace_back(getTriple().getArchName());
384 Subdirs[1] += "-w64-mingw32";
385 StringRef ClangRoot =
386 llvm::sys::path::parent_path(getDriver().getInstalledDir());
387 StringRef Sep = llvm::sys::path::get_separator();
388 for (StringRef CandidateSubdir : Subdirs) {
389 if (llvm::sys::fs::is_directory(ClangRoot + Sep + CandidateSubdir)) {
390 Arch = std::string(CandidateSubdir);
391 return (ClangRoot + Sep + CandidateSubdir).str();
392 }
393 }
394 return make_error_code(std::errc::no_such_file_or_directory);
395}
396
397toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,
398 const ArgList &Args)
399 : ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args),
400 RocmInstallation(D, Triple, Args) {
401 getProgramPaths().push_back(getDriver().getInstalledDir());
402
403 if (getDriver().SysRoot.size())
404 Base = getDriver().SysRoot;
405 // Look for <clang-bin>/../<triplet>; if found, use <clang-bin>/.. as the
406 // base as it could still be a base for a gcc setup with libgcc.
407 else if (llvm::ErrorOr<std::string> TargetSubdir = findClangRelativeSysroot())
408 Base = std::string(llvm::sys::path::parent_path(TargetSubdir.get()));
409 else if (llvm::ErrorOr<std::string> GPPName = findGcc())
410 Base = std::string(llvm::sys::path::parent_path(
411 llvm::sys::path::parent_path(GPPName.get())));
412 else
413 Base = std::string(
414 llvm::sys::path::parent_path(getDriver().getInstalledDir()));
415
416 Base += llvm::sys::path::get_separator();
417 findGccLibDir();
418 // GccLibDir must precede Base/lib so that the
419 // correct crtbegin.o ,cetend.o would be found.
420 getFilePaths().push_back(GccLibDir);
421 getFilePaths().push_back(
422 (Base + Arch + llvm::sys::path::get_separator() + "lib").str());
423 getFilePaths().push_back(Base + "lib");
424 // openSUSE
425 getFilePaths().push_back(Base + Arch + "/sys-root/mingw/lib");
426
427 NativeLLVMSupport =
428 Args.getLastArgValue(options::OPT_fuse_ld_EQ, CLANG_DEFAULT_LINKER"")
429 .equals_lower("lld");
430}
431
432bool toolchains::MinGW::IsIntegratedAssemblerDefault() const { return true; }
433
434Tool *toolchains::MinGW::getTool(Action::ActionClass AC) const {
435 switch (AC) {
436 case Action::PreprocessJobClass:
437 if (!Preprocessor)
438 Preprocessor.reset(new tools::gcc::Preprocessor(*this));
439 return Preprocessor.get();
440 case Action::CompileJobClass:
441 if (!Compiler)
442 Compiler.reset(new tools::gcc::Compiler(*this));
443 return Compiler.get();
444 default:
445 return ToolChain::getTool(AC);
446 }
447}
448
449Tool *toolchains::MinGW::buildAssembler() const {
450 return new tools::MinGW::Assembler(*this);
451}
452
453Tool *toolchains::MinGW::buildLinker() const {
454 return new tools::MinGW::Linker(*this);
455}
456
457bool toolchains::MinGW::HasNativeLLVMSupport() const {
458 return NativeLLVMSupport;
459}
460
461bool toolchains::MinGW::IsUnwindTablesDefault(const ArgList &Args) const {
462 Arg *ExceptionArg = Args.getLastArg(options::OPT_fsjlj_exceptions,
463 options::OPT_fseh_exceptions,
464 options::OPT_fdwarf_exceptions);
465 if (ExceptionArg &&
466 ExceptionArg->getOption().matches(options::OPT_fseh_exceptions))
467 return true;
468 return getArch() == llvm::Triple::x86_64 ||
469 getArch() == llvm::Triple::aarch64;
470}
471
472bool toolchains::MinGW::isPICDefault() const {
473 return getArch() == llvm::Triple::x86_64;
474}
475
476bool toolchains::MinGW::isPIEDefault() const { return false; }
477
478bool toolchains::MinGW::isPICDefaultForced() const {
479 return getArch() == llvm::Triple::x86_64;
480}
481
482llvm::ExceptionHandling
483toolchains::MinGW::GetExceptionModel(const ArgList &Args) const {
484 if (getArch() == llvm::Triple::x86_64 || getArch() == llvm::Triple::aarch64)
485 return llvm::ExceptionHandling::WinEH;
486 return llvm::ExceptionHandling::DwarfCFI;
487}
488
489SanitizerMask toolchains::MinGW::getSupportedSanitizers() const {
490 SanitizerMask Res = ToolChain::getSupportedSanitizers();
491 Res |= SanitizerKind::Address;
492 Res |= SanitizerKind::PointerCompare;
493 Res |= SanitizerKind::PointerSubtract;
494 Res |= SanitizerKind::Vptr;
495 return Res;
496}
497
498void toolchains::MinGW::AddCudaIncludeArgs(const ArgList &DriverArgs,
499 ArgStringList &CC1Args) const {
500 CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
501}
502
503void toolchains::MinGW::AddHIPIncludeArgs(const ArgList &DriverArgs,
504 ArgStringList &CC1Args) const {
505 RocmInstallation.AddHIPIncludeArgs(DriverArgs, CC1Args);
506}
507
508void toolchains::MinGW::printVerboseInfo(raw_ostream &OS) const {
509 CudaInstallation.print(OS);
510 RocmInstallation.print(OS);
511}
512
513// Include directories for various hosts:
514
515// Windows, mingw.org
516// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++
517// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\mingw32
518// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\backward
519// c:\mingw\include
520// c:\mingw\mingw32\include
521
522// Windows, mingw-w64 mingw-builds
523// c:\mingw32\i686-w64-mingw32\include
524// c:\mingw32\i686-w64-mingw32\include\c++
525// c:\mingw32\i686-w64-mingw32\include\c++\i686-w64-mingw32
526// c:\mingw32\i686-w64-mingw32\include\c++\backward
527
528// Windows, mingw-w64 msys2
529// c:\msys64\mingw32\include
530// c:\msys64\mingw32\i686-w64-mingw32\include
531// c:\msys64\mingw32\include\c++\4.9.2
532// c:\msys64\mingw32\include\c++\4.9.2\i686-w64-mingw32
533// c:\msys64\mingw32\include\c++\4.9.2\backward
534
535// openSUSE
536// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++
537// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32
538// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward
539// /usr/x86_64-w64-mingw32/sys-root/mingw/include
540
541// Arch Linux
542// /usr/i686-w64-mingw32/include/c++/5.1.0
543// /usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32
544// /usr/i686-w64-mingw32/include/c++/5.1.0/backward
545// /usr/i686-w64-mingw32/include
546
547// Ubuntu
548// /usr/include/c++/4.8
549// /usr/include/c++/4.8/x86_64-w64-mingw32
550// /usr/include/c++/4.8/backward
551// /usr/x86_64-w64-mingw32/include
552
553void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
554 ArgStringList &CC1Args) const {
555 if (DriverArgs.hasArg(options::OPT_nostdinc))
556 return;
557
558 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
559 SmallString<1024> P(getDriver().ResourceDir);
560 llvm::sys::path::append(P, "include");
561 addSystemInclude(DriverArgs, CC1Args, P.str());
562 }
563
564 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
565 return;
566
567 if (GetRuntimeLibType(DriverArgs) == ToolChain::RLT_Libgcc) {
568 // openSUSE
569 addSystemInclude(DriverArgs, CC1Args,
570 Base + Arch + "/sys-root/mingw/include");
571 }
572
573 addSystemInclude(DriverArgs, CC1Args,
574 Base + Arch + llvm::sys::path::get_separator() + "include");
575 addSystemInclude(DriverArgs, CC1Args, Base + "include");
576}
577
578void toolchains::MinGW::AddClangCXXStdlibIncludeArgs(
579 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
580 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
581 DriverArgs.hasArg(options::OPT_nostdincxx))
582 return;
583
584 StringRef Slash = llvm::sys::path::get_separator();
585
586 switch (GetCXXStdlibType(DriverArgs)) {
587 case ToolChain::CST_Libcxx:
588 addSystemInclude(DriverArgs, CC1Args, Base + Arch + Slash + "include" +
589 Slash + "c++" + Slash + "v1");
590 addSystemInclude(DriverArgs, CC1Args,
591 Base + "include" + Slash + "c++" + Slash + "v1");
592 break;
593
594 case ToolChain::CST_Libstdcxx:
595 llvm::SmallVector<llvm::SmallString<1024>, 4> CppIncludeBases;
596 CppIncludeBases.emplace_back(Base);
597 llvm::sys::path::append(CppIncludeBases[0], Arch, "include", "c++");
598 CppIncludeBases.emplace_back(Base);
599 llvm::sys::path::append(CppIncludeBases[1], Arch, "include", "c++", Ver);
600 CppIncludeBases.emplace_back(Base);
601 llvm::sys::path::append(CppIncludeBases[2], "include", "c++", Ver);
602 CppIncludeBases.emplace_back(GccLibDir);
603 llvm::sys::path::append(CppIncludeBases[3], "include", "c++");
604 for (auto &CppIncludeBase : CppIncludeBases) {
605 addSystemInclude(DriverArgs, CC1Args, CppIncludeBase);
606 CppIncludeBase += Slash;
607 addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + Arch);
608 addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + "backward");
609 }
610 break;
611 }
612}