clang  14.0.0git
Cuda.cpp
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1 //===--- Cuda.cpp - Cuda Tool and ToolChain Implementations -----*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "Cuda.h"
10 #include "CommonArgs.h"
11 #include "clang/Basic/Cuda.h"
12 #include "clang/Config/config.h"
14 #include "clang/Driver/Distro.h"
15 #include "clang/Driver/Driver.h"
17 #include "clang/Driver/InputInfo.h"
18 #include "clang/Driver/Options.h"
19 #include "llvm/ADT/Optional.h"
20 #include "llvm/ADT/StringExtras.h"
21 #include "llvm/Option/ArgList.h"
22 #include "llvm/Support/FileSystem.h"
23 #include "llvm/Support/Host.h"
24 #include "llvm/Support/Path.h"
25 #include "llvm/Support/Process.h"
26 #include "llvm/Support/Program.h"
27 #include "llvm/Support/TargetParser.h"
28 #include "llvm/Support/VirtualFileSystem.h"
29 #include <system_error>
30 
31 using namespace clang::driver;
32 using namespace clang::driver::toolchains;
33 using namespace clang::driver::tools;
34 using namespace clang;
35 using namespace llvm::opt;
36 
37 namespace {
38 
39 CudaVersion getCudaVersion(uint32_t raw_version) {
40  if (raw_version < 7050)
41  return CudaVersion::CUDA_70;
42  if (raw_version < 8000)
43  return CudaVersion::CUDA_75;
44  if (raw_version < 9000)
45  return CudaVersion::CUDA_80;
46  if (raw_version < 9010)
47  return CudaVersion::CUDA_90;
48  if (raw_version < 9020)
49  return CudaVersion::CUDA_91;
50  if (raw_version < 10000)
51  return CudaVersion::CUDA_92;
52  if (raw_version < 10010)
53  return CudaVersion::CUDA_100;
54  if (raw_version < 10020)
55  return CudaVersion::CUDA_101;
56  if (raw_version < 11000)
57  return CudaVersion::CUDA_102;
58  if (raw_version < 11010)
59  return CudaVersion::CUDA_110;
60  if (raw_version < 11020)
61  return CudaVersion::CUDA_111;
62  if (raw_version < 11030)
63  return CudaVersion::CUDA_112;
64  if (raw_version < 11040)
65  return CudaVersion::CUDA_113;
66  if (raw_version < 11050)
67  return CudaVersion::CUDA_114;
68  if (raw_version < 11060)
69  return CudaVersion::CUDA_115;
70  return CudaVersion::NEW;
71 }
72 
73 CudaVersion parseCudaHFile(llvm::StringRef Input) {
74  // Helper lambda which skips the words if the line starts with them or returns
75  // None otherwise.
76  auto StartsWithWords =
77  [](llvm::StringRef Line,
79  for (StringRef word : words) {
80  if (!Line.consume_front(word))
81  return {};
82  Line = Line.ltrim();
83  }
84  return Line;
85  };
86 
87  Input = Input.ltrim();
88  while (!Input.empty()) {
89  if (auto Line =
90  StartsWithWords(Input.ltrim(), {"#", "define", "CUDA_VERSION"})) {
91  uint32_t RawVersion;
92  Line->consumeInteger(10, RawVersion);
93  return getCudaVersion(RawVersion);
94  }
95  // Find next non-empty line.
96  Input = Input.drop_front(Input.find_first_of("\n\r")).ltrim();
97  }
98  return CudaVersion::UNKNOWN;
99 }
100 } // namespace
101 
103  if (Version > CudaVersion::PARTIALLY_SUPPORTED) {
104  std::string VersionString = CudaVersionToString(Version);
105  if (!VersionString.empty())
106  VersionString.insert(0, " ");
107  D.Diag(diag::warn_drv_new_cuda_version)
108  << VersionString
111  } else if (Version > CudaVersion::FULLY_SUPPORTED)
112  D.Diag(diag::warn_drv_partially_supported_cuda_version)
113  << CudaVersionToString(Version);
114 }
115 
117  const Driver &D, const llvm::Triple &HostTriple,
118  const llvm::opt::ArgList &Args)
119  : D(D) {
120  struct Candidate {
121  std::string Path;
122  bool StrictChecking;
123 
124  Candidate(std::string Path, bool StrictChecking = false)
125  : Path(Path), StrictChecking(StrictChecking) {}
126  };
127  SmallVector<Candidate, 4> Candidates;
128 
129  // In decreasing order so we prefer newer versions to older versions.
130  std::initializer_list<const char *> Versions = {"8.0", "7.5", "7.0"};
131  auto &FS = D.getVFS();
132 
133  if (Args.hasArg(clang::driver::options::OPT_cuda_path_EQ)) {
134  Candidates.emplace_back(
135  Args.getLastArgValue(clang::driver::options::OPT_cuda_path_EQ).str());
136  } else if (HostTriple.isOSWindows()) {
137  for (const char *Ver : Versions)
138  Candidates.emplace_back(
139  D.SysRoot + "/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v" +
140  Ver);
141  } else {
142  if (!Args.hasArg(clang::driver::options::OPT_cuda_path_ignore_env)) {
143  // Try to find ptxas binary. If the executable is located in a directory
144  // called 'bin/', its parent directory might be a good guess for a valid
145  // CUDA installation.
146  // However, some distributions might installs 'ptxas' to /usr/bin. In that
147  // case the candidate would be '/usr' which passes the following checks
148  // because '/usr/include' exists as well. To avoid this case, we always
149  // check for the directory potentially containing files for libdevice,
150  // even if the user passes -nocudalib.
151  if (llvm::ErrorOr<std::string> ptxas =
152  llvm::sys::findProgramByName("ptxas")) {
153  SmallString<256> ptxasAbsolutePath;
154  llvm::sys::fs::real_path(*ptxas, ptxasAbsolutePath);
155 
156  StringRef ptxasDir = llvm::sys::path::parent_path(ptxasAbsolutePath);
157  if (llvm::sys::path::filename(ptxasDir) == "bin")
158  Candidates.emplace_back(
159  std::string(llvm::sys::path::parent_path(ptxasDir)),
160  /*StrictChecking=*/true);
161  }
162  }
163 
164  Candidates.emplace_back(D.SysRoot + "/usr/local/cuda");
165  for (const char *Ver : Versions)
166  Candidates.emplace_back(D.SysRoot + "/usr/local/cuda-" + Ver);
167 
168  Distro Dist(FS, llvm::Triple(llvm::sys::getProcessTriple()));
169  if (Dist.IsDebian() || Dist.IsUbuntu())
170  // Special case for Debian to have nvidia-cuda-toolkit work
171  // out of the box. More info on http://bugs.debian.org/882505
172  Candidates.emplace_back(D.SysRoot + "/usr/lib/cuda");
173  }
174 
175  bool NoCudaLib = Args.hasArg(options::OPT_nogpulib);
176 
177  for (const auto &Candidate : Candidates) {
178  InstallPath = Candidate.Path;
179  if (InstallPath.empty() || !FS.exists(InstallPath))
180  continue;
181 
182  BinPath = InstallPath + "/bin";
183  IncludePath = InstallPath + "/include";
184  LibDevicePath = InstallPath + "/nvvm/libdevice";
185 
186  if (!(FS.exists(IncludePath) && FS.exists(BinPath)))
187  continue;
188  bool CheckLibDevice = (!NoCudaLib || Candidate.StrictChecking);
189  if (CheckLibDevice && !FS.exists(LibDevicePath))
190  continue;
191 
192  // On Linux, we have both lib and lib64 directories, and we need to choose
193  // based on our triple. On MacOS, we have only a lib directory.
194  //
195  // It's sufficient for our purposes to be flexible: If both lib and lib64
196  // exist, we choose whichever one matches our triple. Otherwise, if only
197  // lib exists, we use it.
198  if (HostTriple.isArch64Bit() && FS.exists(InstallPath + "/lib64"))
199  LibPath = InstallPath + "/lib64";
200  else if (FS.exists(InstallPath + "/lib"))
201  LibPath = InstallPath + "/lib";
202  else
203  continue;
204 
205  Version = CudaVersion::UNKNOWN;
206  if (auto CudaHFile = FS.getBufferForFile(InstallPath + "/include/cuda.h"))
207  Version = parseCudaHFile((*CudaHFile)->getBuffer());
208  // As the last resort, make an educated guess between CUDA-7.0, which had
209  // old-style libdevice bitcode, and an unknown recent CUDA version.
210  if (Version == CudaVersion::UNKNOWN) {
211  Version = FS.exists(LibDevicePath + "/libdevice.10.bc")
214  }
215 
216  if (Version >= CudaVersion::CUDA_90) {
217  // CUDA-9+ uses single libdevice file for all GPU variants.
218  std::string FilePath = LibDevicePath + "/libdevice.10.bc";
219  if (FS.exists(FilePath)) {
220  for (int Arch = (int)CudaArch::SM_30, E = (int)CudaArch::LAST; Arch < E;
221  ++Arch) {
222  CudaArch GpuArch = static_cast<CudaArch>(Arch);
223  if (!IsNVIDIAGpuArch(GpuArch))
224  continue;
225  std::string GpuArchName(CudaArchToString(GpuArch));
226  LibDeviceMap[GpuArchName] = FilePath;
227  }
228  }
229  } else {
230  std::error_code EC;
231  for (llvm::vfs::directory_iterator LI = FS.dir_begin(LibDevicePath, EC),
232  LE;
233  !EC && LI != LE; LI = LI.increment(EC)) {
234  StringRef FilePath = LI->path();
235  StringRef FileName = llvm::sys::path::filename(FilePath);
236  // Process all bitcode filenames that look like
237  // libdevice.compute_XX.YY.bc
238  const StringRef LibDeviceName = "libdevice.";
239  if (!(FileName.startswith(LibDeviceName) && FileName.endswith(".bc")))
240  continue;
241  StringRef GpuArch = FileName.slice(
242  LibDeviceName.size(), FileName.find('.', LibDeviceName.size()));
243  LibDeviceMap[GpuArch] = FilePath.str();
244  // Insert map entries for specific devices with this compute
245  // capability. NVCC's choice of the libdevice library version is
246  // rather peculiar and depends on the CUDA version.
247  if (GpuArch == "compute_20") {
248  LibDeviceMap["sm_20"] = std::string(FilePath);
249  LibDeviceMap["sm_21"] = std::string(FilePath);
250  LibDeviceMap["sm_32"] = std::string(FilePath);
251  } else if (GpuArch == "compute_30") {
252  LibDeviceMap["sm_30"] = std::string(FilePath);
253  if (Version < CudaVersion::CUDA_80) {
254  LibDeviceMap["sm_50"] = std::string(FilePath);
255  LibDeviceMap["sm_52"] = std::string(FilePath);
256  LibDeviceMap["sm_53"] = std::string(FilePath);
257  }
258  LibDeviceMap["sm_60"] = std::string(FilePath);
259  LibDeviceMap["sm_61"] = std::string(FilePath);
260  LibDeviceMap["sm_62"] = std::string(FilePath);
261  } else if (GpuArch == "compute_35") {
262  LibDeviceMap["sm_35"] = std::string(FilePath);
263  LibDeviceMap["sm_37"] = std::string(FilePath);
264  } else if (GpuArch == "compute_50") {
265  if (Version >= CudaVersion::CUDA_80) {
266  LibDeviceMap["sm_50"] = std::string(FilePath);
267  LibDeviceMap["sm_52"] = std::string(FilePath);
268  LibDeviceMap["sm_53"] = std::string(FilePath);
269  }
270  }
271  }
272  }
273 
274  // Check that we have found at least one libdevice that we can link in if
275  // -nocudalib hasn't been specified.
276  if (LibDeviceMap.empty() && !NoCudaLib)
277  continue;
278 
279  IsValid = true;
280  break;
281  }
282 }
283 
285  const ArgList &DriverArgs, ArgStringList &CC1Args) const {
286  if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
287  // Add cuda_wrappers/* to our system include path. This lets us wrap
288  // standard library headers.
290  llvm::sys::path::append(P, "include");
291  llvm::sys::path::append(P, "cuda_wrappers");
292  CC1Args.push_back("-internal-isystem");
293  CC1Args.push_back(DriverArgs.MakeArgString(P));
294  }
295 
296  if (DriverArgs.hasArg(options::OPT_nogpuinc))
297  return;
298 
299  if (!isValid()) {
300  D.Diag(diag::err_drv_no_cuda_installation);
301  return;
302  }
303 
304  CC1Args.push_back("-include");
305  CC1Args.push_back("__clang_cuda_runtime_wrapper.h");
306 }
307 
309  CudaArch Arch) const {
310  if (Arch == CudaArch::UNKNOWN || Version == CudaVersion::UNKNOWN ||
311  ArchsWithBadVersion[(int)Arch])
312  return;
313 
314  auto MinVersion = MinVersionForCudaArch(Arch);
315  auto MaxVersion = MaxVersionForCudaArch(Arch);
316  if (Version < MinVersion || Version > MaxVersion) {
317  ArchsWithBadVersion[(int)Arch] = true;
318  D.Diag(diag::err_drv_cuda_version_unsupported)
319  << CudaArchToString(Arch) << CudaVersionToString(MinVersion)
320  << CudaVersionToString(MaxVersion) << InstallPath
321  << CudaVersionToString(Version);
322  }
323 }
324 
325 void CudaInstallationDetector::print(raw_ostream &OS) const {
326  if (isValid())
327  OS << "Found CUDA installation: " << InstallPath << ", version "
328  << CudaVersionToString(Version) << "\n";
329 }
330 
331 namespace {
332 /// Debug info level for the NVPTX devices. We may need to emit different debug
333 /// info level for the host and for the device itselfi. This type controls
334 /// emission of the debug info for the devices. It either prohibits disable info
335 /// emission completely, or emits debug directives only, or emits same debug
336 /// info as for the host.
337 enum DeviceDebugInfoLevel {
338  DisableDebugInfo, /// Do not emit debug info for the devices.
339  DebugDirectivesOnly, /// Emit only debug directives.
340  EmitSameDebugInfoAsHost, /// Use the same debug info level just like for the
341  /// host.
342 };
343 } // anonymous namespace
344 
345 /// Define debug info level for the NVPTX devices. If the debug info for both
346 /// the host and device are disabled (-g0/-ggdb0 or no debug options at all). If
347 /// only debug directives are requested for the both host and device
348 /// (-gline-directvies-only), or the debug info only for the device is disabled
349 /// (optimization is on and --cuda-noopt-device-debug was not specified), the
350 /// debug directves only must be emitted for the device. Otherwise, use the same
351 /// debug info level just like for the host (with the limitations of only
352 /// supported DWARF2 standard).
353 static DeviceDebugInfoLevel mustEmitDebugInfo(const ArgList &Args) {
354  const Arg *A = Args.getLastArg(options::OPT_O_Group);
355  bool IsDebugEnabled = !A || A->getOption().matches(options::OPT_O0) ||
356  Args.hasFlag(options::OPT_cuda_noopt_device_debug,
357  options::OPT_no_cuda_noopt_device_debug,
358  /*Default=*/false);
359  if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
360  const Option &Opt = A->getOption();
361  if (Opt.matches(options::OPT_gN_Group)) {
362  if (Opt.matches(options::OPT_g0) || Opt.matches(options::OPT_ggdb0))
363  return DisableDebugInfo;
364  if (Opt.matches(options::OPT_gline_directives_only))
365  return DebugDirectivesOnly;
366  }
367  return IsDebugEnabled ? EmitSameDebugInfoAsHost : DebugDirectivesOnly;
368  }
369  return willEmitRemarks(Args) ? DebugDirectivesOnly : DisableDebugInfo;
370 }
371 
372 void NVPTX::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
373  const InputInfo &Output,
374  const InputInfoList &Inputs,
375  const ArgList &Args,
376  const char *LinkingOutput) const {
377  const auto &TC =
378  static_cast<const toolchains::CudaToolChain &>(getToolChain());
379  assert(TC.getTriple().isNVPTX() && "Wrong platform");
380 
381  StringRef GPUArchName;
382  // If this is an OpenMP action we need to extract the device architecture
383  // from the -march=arch option. This option may come from -Xopenmp-target
384  // flag or the default value.
386  GPUArchName = Args.getLastArgValue(options::OPT_march_EQ);
387  assert(!GPUArchName.empty() && "Must have an architecture passed in.");
388  } else
389  GPUArchName = JA.getOffloadingArch();
390 
391  // Obtain architecture from the action.
392  CudaArch gpu_arch = StringToCudaArch(GPUArchName);
393  assert(gpu_arch != CudaArch::UNKNOWN &&
394  "Device action expected to have an architecture.");
395 
396  // Check that our installation's ptxas supports gpu_arch.
397  if (!Args.hasArg(options::OPT_no_cuda_version_check)) {
398  TC.CudaInstallation.CheckCudaVersionSupportsArch(gpu_arch);
399  }
400 
401  ArgStringList CmdArgs;
402  CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-m64" : "-m32");
403  DeviceDebugInfoLevel DIKind = mustEmitDebugInfo(Args);
404  if (DIKind == EmitSameDebugInfoAsHost) {
405  // ptxas does not accept -g option if optimization is enabled, so
406  // we ignore the compiler's -O* options if we want debug info.
407  CmdArgs.push_back("-g");
408  CmdArgs.push_back("--dont-merge-basicblocks");
409  CmdArgs.push_back("--return-at-end");
410  } else if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
411  // Map the -O we received to -O{0,1,2,3}.
412  //
413  // TODO: Perhaps we should map host -O2 to ptxas -O3. -O3 is ptxas's
414  // default, so it may correspond more closely to the spirit of clang -O2.
415 
416  // -O3 seems like the least-bad option when -Osomething is specified to
417  // clang but it isn't handled below.
418  StringRef OOpt = "3";
419  if (A->getOption().matches(options::OPT_O4) ||
420  A->getOption().matches(options::OPT_Ofast))
421  OOpt = "3";
422  else if (A->getOption().matches(options::OPT_O0))
423  OOpt = "0";
424  else if (A->getOption().matches(options::OPT_O)) {
425  // -Os, -Oz, and -O(anything else) map to -O2, for lack of better options.
426  OOpt = llvm::StringSwitch<const char *>(A->getValue())
427  .Case("1", "1")
428  .Case("2", "2")
429  .Case("3", "3")
430  .Case("s", "2")
431  .Case("z", "2")
432  .Default("2");
433  }
434  CmdArgs.push_back(Args.MakeArgString(llvm::Twine("-O") + OOpt));
435  } else {
436  // If no -O was passed, pass -O0 to ptxas -- no opt flag should correspond
437  // to no optimizations, but ptxas's default is -O3.
438  CmdArgs.push_back("-O0");
439  }
440  if (DIKind == DebugDirectivesOnly)
441  CmdArgs.push_back("-lineinfo");
442 
443  // Pass -v to ptxas if it was passed to the driver.
444  if (Args.hasArg(options::OPT_v))
445  CmdArgs.push_back("-v");
446 
447  CmdArgs.push_back("--gpu-name");
448  CmdArgs.push_back(Args.MakeArgString(CudaArchToString(gpu_arch)));
449  CmdArgs.push_back("--output-file");
450  CmdArgs.push_back(Args.MakeArgString(TC.getInputFilename(Output)));
451  for (const auto& II : Inputs)
452  CmdArgs.push_back(Args.MakeArgString(II.getFilename()));
453 
454  for (const auto& A : Args.getAllArgValues(options::OPT_Xcuda_ptxas))
455  CmdArgs.push_back(Args.MakeArgString(A));
456 
457  bool Relocatable = false;
459  // In OpenMP we need to generate relocatable code.
460  Relocatable = Args.hasFlag(options::OPT_fopenmp_relocatable_target,
461  options::OPT_fnoopenmp_relocatable_target,
462  /*Default=*/true);
463  else if (JA.isOffloading(Action::OFK_Cuda))
464  Relocatable = Args.hasFlag(options::OPT_fgpu_rdc,
465  options::OPT_fno_gpu_rdc, /*Default=*/false);
466 
467  if (Relocatable)
468  CmdArgs.push_back("-c");
469 
470  const char *Exec;
471  if (Arg *A = Args.getLastArg(options::OPT_ptxas_path_EQ))
472  Exec = A->getValue();
473  else
474  Exec = Args.MakeArgString(TC.GetProgramPath("ptxas"));
475  C.addCommand(std::make_unique<Command>(
476  JA, *this,
478  "--options-file"},
479  Exec, CmdArgs, Inputs, Output));
480 }
481 
482 static bool shouldIncludePTX(const ArgList &Args, const char *gpu_arch) {
483  bool includePTX = true;
484  for (Arg *A : Args) {
485  if (!(A->getOption().matches(options::OPT_cuda_include_ptx_EQ) ||
486  A->getOption().matches(options::OPT_no_cuda_include_ptx_EQ)))
487  continue;
488  A->claim();
489  const StringRef ArchStr = A->getValue();
490  if (ArchStr == "all" || ArchStr == gpu_arch) {
491  includePTX = A->getOption().matches(options::OPT_cuda_include_ptx_EQ);
492  continue;
493  }
494  }
495  return includePTX;
496 }
497 
498 // All inputs to this linker must be from CudaDeviceActions, as we need to look
499 // at the Inputs' Actions in order to figure out which GPU architecture they
500 // correspond to.
501 void NVPTX::Linker::ConstructJob(Compilation &C, const JobAction &JA,
502  const InputInfo &Output,
503  const InputInfoList &Inputs,
504  const ArgList &Args,
505  const char *LinkingOutput) const {
506  const auto &TC =
507  static_cast<const toolchains::CudaToolChain &>(getToolChain());
508  assert(TC.getTriple().isNVPTX() && "Wrong platform");
509 
510  ArgStringList CmdArgs;
511  if (TC.CudaInstallation.version() <= CudaVersion::CUDA_100)
512  CmdArgs.push_back("--cuda");
513  CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-64" : "-32");
514  CmdArgs.push_back(Args.MakeArgString("--create"));
515  CmdArgs.push_back(Args.MakeArgString(Output.getFilename()));
516  if (mustEmitDebugInfo(Args) == EmitSameDebugInfoAsHost)
517  CmdArgs.push_back("-g");
518 
519  for (const auto& II : Inputs) {
520  auto *A = II.getAction();
521  assert(A->getInputs().size() == 1 &&
522  "Device offload action is expected to have a single input");
523  const char *gpu_arch_str = A->getOffloadingArch();
524  assert(gpu_arch_str &&
525  "Device action expected to have associated a GPU architecture!");
526  CudaArch gpu_arch = StringToCudaArch(gpu_arch_str);
527 
528  if (II.getType() == types::TY_PP_Asm &&
529  !shouldIncludePTX(Args, gpu_arch_str))
530  continue;
531  // We need to pass an Arch of the form "sm_XX" for cubin files and
532  // "compute_XX" for ptx.
533  const char *Arch = (II.getType() == types::TY_PP_Asm)
534  ? CudaArchToVirtualArchString(gpu_arch)
535  : gpu_arch_str;
536  CmdArgs.push_back(Args.MakeArgString(llvm::Twine("--image=profile=") +
537  Arch + ",file=" + II.getFilename()));
538  }
539 
540  for (const auto& A : Args.getAllArgValues(options::OPT_Xcuda_fatbinary))
541  CmdArgs.push_back(Args.MakeArgString(A));
542 
543  const char *Exec = Args.MakeArgString(TC.GetProgramPath("fatbinary"));
544  C.addCommand(std::make_unique<Command>(
545  JA, *this,
547  "--options-file"},
548  Exec, CmdArgs, Inputs, Output));
549 }
550 
551 void NVPTX::OpenMPLinker::ConstructJob(Compilation &C, const JobAction &JA,
552  const InputInfo &Output,
553  const InputInfoList &Inputs,
554  const ArgList &Args,
555  const char *LinkingOutput) const {
556  const auto &TC =
557  static_cast<const toolchains::CudaToolChain &>(getToolChain());
558  assert(TC.getTriple().isNVPTX() && "Wrong platform");
559 
560  ArgStringList CmdArgs;
561 
562  // OpenMP uses nvlink to link cubin files. The result will be embedded in the
563  // host binary by the host linker.
564  assert(!JA.isHostOffloading(Action::OFK_OpenMP) &&
565  "CUDA toolchain not expected for an OpenMP host device.");
566 
567  if (Output.isFilename()) {
568  CmdArgs.push_back("-o");
569  CmdArgs.push_back(Output.getFilename());
570  } else
571  assert(Output.isNothing() && "Invalid output.");
572  if (mustEmitDebugInfo(Args) == EmitSameDebugInfoAsHost)
573  CmdArgs.push_back("-g");
574 
575  if (Args.hasArg(options::OPT_v))
576  CmdArgs.push_back("-v");
577 
578  StringRef GPUArch =
579  Args.getLastArgValue(options::OPT_march_EQ);
580  assert(!GPUArch.empty() && "At least one GPU Arch required for ptxas.");
581 
582  CmdArgs.push_back("-arch");
583  CmdArgs.push_back(Args.MakeArgString(GPUArch));
584 
585  // Add paths specified in LIBRARY_PATH environment variable as -L options.
586  addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
587 
588  // Add paths for the default clang library path.
589  SmallString<256> DefaultLibPath =
590  llvm::sys::path::parent_path(TC.getDriver().Dir);
591  llvm::sys::path::append(DefaultLibPath, "lib" CLANG_LIBDIR_SUFFIX);
592  CmdArgs.push_back(Args.MakeArgString(Twine("-L") + DefaultLibPath));
593 
594  for (const auto &II : Inputs) {
595  if (II.getType() == types::TY_LLVM_IR ||
596  II.getType() == types::TY_LTO_IR ||
597  II.getType() == types::TY_LTO_BC ||
598  II.getType() == types::TY_LLVM_BC) {
599  C.getDriver().Diag(diag::err_drv_no_linker_llvm_support)
600  << getToolChain().getTripleString();
601  continue;
602  }
603 
604  // Currently, we only pass the input files to the linker, we do not pass
605  // any libraries that may be valid only for the host.
606  if (!II.isFilename())
607  continue;
608 
609  const char *CubinF = C.addTempFile(
610  C.getArgs().MakeArgString(getToolChain().getInputFilename(II)));
611 
612  CmdArgs.push_back(CubinF);
613  }
614 
615  AddStaticDeviceLibsLinking(C, *this, JA, Inputs, Args, CmdArgs, "nvptx", GPUArch,
616  false, false);
617 
618  // Find nvlink and pass it as "--nvlink-path=" argument of
619  // clang-nvlink-wrapper.
620  CmdArgs.push_back(Args.MakeArgString(
621  Twine("--nvlink-path=" + getToolChain().GetProgramPath("nvlink"))));
622 
623  const char *Exec =
624  Args.MakeArgString(getToolChain().GetProgramPath("clang-nvlink-wrapper"));
625  C.addCommand(std::make_unique<Command>(
626  JA, *this,
628  "--options-file"},
629  Exec, CmdArgs, Inputs, Output));
630 }
631 
632 /// CUDA toolchain. Our assembler is ptxas, and our "linker" is fatbinary,
633 /// which isn't properly a linker but nonetheless performs the step of stitching
634 /// together object files from the assembler into a single blob.
635 
636 CudaToolChain::CudaToolChain(const Driver &D, const llvm::Triple &Triple,
637  const ToolChain &HostTC, const ArgList &Args,
638  const Action::OffloadKind OK)
639  : ToolChain(D, Triple, Args), HostTC(HostTC),
640  CudaInstallation(D, HostTC.getTriple(), Args), OK(OK) {
641  if (CudaInstallation.isValid()) {
644  }
645  // Lookup binaries into the driver directory, this is used to
646  // discover the clang-offload-bundler executable.
647  getProgramPaths().push_back(getDriver().Dir);
648 }
649 
651  // Only object files are changed, for example assembly files keep their .s
652  // extensions. CUDA also continues to use .o as they don't use nvlink but
653  // fatbinary.
654  if (!(OK == Action::OFK_OpenMP && Input.getType() == types::TY_Object))
655  return ToolChain::getInputFilename(Input);
656 
657  // Replace extension for object files with cubin because nvlink relies on
658  // these particular file names.
660  llvm::sys::path::replace_extension(Filename, "cubin");
661  return std::string(Filename.str());
662 }
663 
665  const llvm::opt::ArgList &DriverArgs,
666  llvm::opt::ArgStringList &CC1Args,
667  Action::OffloadKind DeviceOffloadingKind) const {
668  HostTC.addClangTargetOptions(DriverArgs, CC1Args, DeviceOffloadingKind);
669 
670  StringRef GpuArch = DriverArgs.getLastArgValue(options::OPT_march_EQ);
671  assert(!GpuArch.empty() && "Must have an explicit GPU arch.");
672  assert((DeviceOffloadingKind == Action::OFK_OpenMP ||
673  DeviceOffloadingKind == Action::OFK_Cuda) &&
674  "Only OpenMP or CUDA offloading kinds are supported for NVIDIA GPUs.");
675 
676  if (DeviceOffloadingKind == Action::OFK_Cuda) {
677  CC1Args.append(
678  {"-fcuda-is-device", "-mllvm", "-enable-memcpyopt-without-libcalls"});
679 
680  if (DriverArgs.hasFlag(options::OPT_fcuda_approx_transcendentals,
681  options::OPT_fno_cuda_approx_transcendentals, false))
682  CC1Args.push_back("-fcuda-approx-transcendentals");
683  }
684 
685  if (DriverArgs.hasArg(options::OPT_nogpulib))
686  return;
687 
688  if (DeviceOffloadingKind == Action::OFK_OpenMP &&
689  DriverArgs.hasArg(options::OPT_S))
690  return;
691 
692  std::string LibDeviceFile = CudaInstallation.getLibDeviceFile(GpuArch);
693  if (LibDeviceFile.empty()) {
694  getDriver().Diag(diag::err_drv_no_cuda_libdevice) << GpuArch;
695  return;
696  }
697 
698  CC1Args.push_back("-mlink-builtin-bitcode");
699  CC1Args.push_back(DriverArgs.MakeArgString(LibDeviceFile));
700 
701  clang::CudaVersion CudaInstallationVersion = CudaInstallation.version();
702 
703  // New CUDA versions often introduce new instructions that are only supported
704  // by new PTX version, so we need to raise PTX level to enable them in NVPTX
705  // back-end.
706  const char *PtxFeature = nullptr;
707  switch (CudaInstallationVersion) {
708 #define CASE_CUDA_VERSION(CUDA_VER, PTX_VER) \
709  case CudaVersion::CUDA_##CUDA_VER: \
710  PtxFeature = "+ptx" #PTX_VER; \
711  break;
712  CASE_CUDA_VERSION(115, 75);
713  CASE_CUDA_VERSION(114, 74);
714  CASE_CUDA_VERSION(113, 73);
715  CASE_CUDA_VERSION(112, 72);
716  CASE_CUDA_VERSION(111, 71);
717  CASE_CUDA_VERSION(110, 70);
718  CASE_CUDA_VERSION(102, 65);
719  CASE_CUDA_VERSION(101, 64);
720  CASE_CUDA_VERSION(100, 63);
721  CASE_CUDA_VERSION(92, 61);
722  CASE_CUDA_VERSION(91, 61);
723  CASE_CUDA_VERSION(90, 60);
724 #undef CASE_CUDA_VERSION
725  default:
726  PtxFeature = "+ptx42";
727  }
728  CC1Args.append({"-target-feature", PtxFeature});
729  if (DriverArgs.hasFlag(options::OPT_fcuda_short_ptr,
730  options::OPT_fno_cuda_short_ptr, false))
731  CC1Args.append({"-mllvm", "--nvptx-short-ptr"});
732 
733  if (CudaInstallationVersion >= CudaVersion::UNKNOWN)
734  CC1Args.push_back(
735  DriverArgs.MakeArgString(Twine("-target-sdk-version=") +
736  CudaVersionToString(CudaInstallationVersion)));
737 
738  if (DeviceOffloadingKind == Action::OFK_OpenMP) {
739  if (CudaInstallationVersion < CudaVersion::CUDA_92) {
740  getDriver().Diag(
741  diag::err_drv_omp_offload_target_cuda_version_not_support)
742  << CudaVersionToString(CudaInstallationVersion);
743  return;
744  }
745 
746  std::string BitcodeSuffix;
747  if (DriverArgs.hasFlag(options::OPT_fopenmp_target_new_runtime,
748  options::OPT_fno_openmp_target_new_runtime, false))
749  BitcodeSuffix = "new-nvptx-" + GpuArch.str();
750  else
751  BitcodeSuffix = "nvptx-" + GpuArch.str();
752 
753  addOpenMPDeviceRTL(getDriver(), DriverArgs, CC1Args, BitcodeSuffix,
754  getTriple());
755  AddStaticDeviceLibsPostLinking(getDriver(), DriverArgs, CC1Args, "nvptx", GpuArch,
756  /* bitcode SDL?*/ true, /* PostClang Link? */ true);
757  }
758 }
759 
761  const llvm::opt::ArgList &DriverArgs, const JobAction &JA,
762  const llvm::fltSemantics *FPType) const {
764  if (FPType && FPType == &llvm::APFloat::IEEEsingle() &&
765  DriverArgs.hasFlag(options::OPT_fgpu_flush_denormals_to_zero,
766  options::OPT_fno_gpu_flush_denormals_to_zero, false))
767  return llvm::DenormalMode::getPreserveSign();
768  }
769 
771  return llvm::DenormalMode::getIEEE();
772 }
773 
774 bool CudaToolChain::supportsDebugInfoOption(const llvm::opt::Arg *A) const {
775  const Option &O = A->getOption();
776  return (O.matches(options::OPT_gN_Group) &&
777  !O.matches(options::OPT_gmodules)) ||
778  O.matches(options::OPT_g_Flag) ||
779  O.matches(options::OPT_ggdbN_Group) || O.matches(options::OPT_ggdb) ||
780  O.matches(options::OPT_gdwarf) || O.matches(options::OPT_gdwarf_2) ||
781  O.matches(options::OPT_gdwarf_3) || O.matches(options::OPT_gdwarf_4) ||
782  O.matches(options::OPT_gdwarf_5) ||
783  O.matches(options::OPT_gcolumn_info);
784 }
785 
787  codegenoptions::DebugInfoKind &DebugInfoKind, const ArgList &Args) const {
788  switch (mustEmitDebugInfo(Args)) {
789  case DisableDebugInfo:
791  break;
792  case DebugDirectivesOnly:
794  break;
795  case EmitSameDebugInfoAsHost:
796  // Use same debug info level as the host.
797  break;
798  }
799 }
800 
801 void CudaToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
802  ArgStringList &CC1Args) const {
803  // Check our CUDA version if we're going to include the CUDA headers.
804  if (!DriverArgs.hasArg(options::OPT_nogpuinc) &&
805  !DriverArgs.hasArg(options::OPT_no_cuda_version_check)) {
806  StringRef Arch = DriverArgs.getLastArgValue(options::OPT_march_EQ);
807  assert(!Arch.empty() && "Must have an explicit GPU arch.");
809  }
810  CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
811 }
812 
813 llvm::opt::DerivedArgList *
814 CudaToolChain::TranslateArgs(const llvm::opt::DerivedArgList &Args,
815  StringRef BoundArch,
816  Action::OffloadKind DeviceOffloadKind) const {
817  DerivedArgList *DAL =
818  HostTC.TranslateArgs(Args, BoundArch, DeviceOffloadKind);
819  if (!DAL)
820  DAL = new DerivedArgList(Args.getBaseArgs());
821 
822  const OptTable &Opts = getDriver().getOpts();
823 
824  // For OpenMP device offloading, append derived arguments. Make sure
825  // flags are not duplicated.
826  // Also append the compute capability.
827  if (DeviceOffloadKind == Action::OFK_OpenMP) {
828  for (Arg *A : Args)
829  if (!llvm::is_contained(*DAL, A))
830  DAL->append(A);
831 
832  StringRef Arch = DAL->getLastArgValue(options::OPT_march_EQ);
833  if (Arch.empty())
834  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_march_EQ),
835  CLANG_OPENMP_NVPTX_DEFAULT_ARCH);
836 
837  return DAL;
838  }
839 
840  for (Arg *A : Args) {
841  DAL->append(A);
842  }
843 
844  if (!BoundArch.empty()) {
845  DAL->eraseArg(options::OPT_march_EQ);
846  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_march_EQ), BoundArch);
847  }
848  return DAL;
849 }
850 
852  return new tools::NVPTX::Assembler(*this);
853 }
854 
856  if (OK == Action::OFK_OpenMP)
857  return new tools::NVPTX::OpenMPLinker(*this);
858  return new tools::NVPTX::Linker(*this);
859 }
860 
861 void CudaToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {
863 }
864 
866 CudaToolChain::GetCXXStdlibType(const ArgList &Args) const {
867  return HostTC.GetCXXStdlibType(Args);
868 }
869 
870 void CudaToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
871  ArgStringList &CC1Args) const {
872  HostTC.AddClangSystemIncludeArgs(DriverArgs, CC1Args);
873 
874  if (!DriverArgs.hasArg(options::OPT_nogpuinc) && CudaInstallation.isValid())
875  CC1Args.append(
876  {"-internal-isystem",
877  DriverArgs.MakeArgString(CudaInstallation.getIncludePath())});
878 }
879 
881  ArgStringList &CC1Args) const {
882  HostTC.AddClangCXXStdlibIncludeArgs(Args, CC1Args);
883 }
884 
885 void CudaToolChain::AddIAMCUIncludeArgs(const ArgList &Args,
886  ArgStringList &CC1Args) const {
887  HostTC.AddIAMCUIncludeArgs(Args, CC1Args);
888 }
889 
891  // The CudaToolChain only supports sanitizers in the sense that it allows
892  // sanitizer arguments on the command line if they are supported by the host
893  // toolchain. The CudaToolChain will actually ignore any command line
894  // arguments for any of these "supported" sanitizers. That means that no
895  // sanitization of device code is actually supported at this time.
896  //
897  // This behavior is necessary because the host and device toolchains
898  // invocations often share the command line, so the device toolchain must
899  // tolerate flags meant only for the host toolchain.
901 }
902 
904  const ArgList &Args) const {
905  return HostTC.computeMSVCVersion(D, Args);
906 }
clang::driver::toolchains
Definition: AIX.h:55
clang::CudaVersion::CUDA_91
@ CUDA_91
clang::driver::Distro::IsUbuntu
bool IsUbuntu() const
Definition: Distro.h:127
clang::driver::Action::getOffloadingArch
const char * getOffloadingArch() const
Definition: Action.h:200
clang::CudaVersion::CUDA_114
@ CUDA_114
clang::driver::ResponseFileSupport::RF_Full
@ RF_Full
Definition: Job.h:48
clang::driver::toolchains::CudaToolChain::addClangWarningOptions
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Add warning options that need to be passed to cc1 for this target.
Definition: Cuda.cpp:861
clang::CudaVersion::CUDA_100
@ CUDA_100
clang::driver::toolchains::CudaToolChain::AddIAMCUIncludeArgs
void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use MCU GCC toolchain includes.
Definition: Cuda.cpp:885
clang::CudaArchToVirtualArchString
const char * CudaArchToVirtualArchString(CudaArch A)
Definition: Cuda.cpp:141
clang::driver::ToolChain::getProgramPaths
path_list & getProgramPaths()
Definition: ToolChain.h:262
clang::CudaVersion::NEW
@ NEW
Driver.h
string
string(SUBSTRING ${CMAKE_CURRENT_BINARY_DIR} 0 ${PATH_LIB_START} PATH_HEAD) string(SUBSTRING $
Definition: CMakeLists.txt:22
clang::CudaVersion::CUDA_70
@ CUDA_70
clang::driver::ToolChain::computeMSVCVersion
virtual VersionTuple computeMSVCVersion(const Driver *D, const llvm::opt::ArgList &Args) const
On Windows, returns the MSVC compatibility version.
Definition: ToolChain.cpp:1049
clang::driver::tools::NVPTX::Assembler
Definition: Cuda.h:88
clang::driver::Action::OFK_Cuda
@ OFK_Cuda
Definition: Action.h:92
llvm::SmallVector
Definition: LLVM.h:38
clang::driver::Distro::IsDebian
bool IsDebian() const
Definition: Distro.h:123
clang::driver::toolchains::CudaToolChain
Definition: Cuda.h:132
clang::driver::toolchains::CudaToolChain::TranslateArgs
llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const override
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: Cuda.cpp:814
clang::driver::ToolChain::AddClangCXXStdlibIncludeArgs
virtual void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: ToolChain.cpp:905
clang::driver::tools
Definition: AIX.h:17
clang::driver::toolchains::CudaToolChain::buildAssembler
Tool * buildAssembler() const override
Definition: Cuda.cpp:851
clang::driver::CudaInstallationDetector::isValid
bool isValid() const
Check whether we detected a valid Cuda install.
Definition: Cuda.h:58
clang::driver::ToolChain::getDriver
const Driver & getDriver() const
Definition: ToolChain.h:221
Filename
StringRef Filename
Definition: Format.cpp:2379
int
__device__ int
Definition: __clang_hip_libdevice_declares.h:63
clang::CudaVersion::CUDA_101
@ CUDA_101
clang::MinVersionForCudaArch
CudaVersion MinVersionForCudaArch(CudaArch A)
Get the earliest CudaVersion that supports the given CudaArch.
Definition: Cuda.cpp:159
clang::codegenoptions::NoDebugInfo
@ NoDebugInfo
Don't generate debug info.
Definition: DebugInfoOptions.h:22
clang::driver::toolchains::CudaToolChain::computeMSVCVersion
VersionTuple computeMSVCVersion(const Driver *D, const llvm::opt::ArgList &Args) const override
On Windows, returns the MSVC compatibility version.
Definition: Cuda.cpp:903
clang::StringToCudaArch
CudaArch StringToCudaArch(llvm::StringRef S)
Definition: Cuda.cpp:150
llvm::Optional
Definition: LLVM.h:40
clang::driver::Action::isHostOffloading
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:204
clang::driver::ToolChain::addClangWarningOptions
virtual void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const
Add warning options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:745
clang::driver::Driver::getOpts
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:325
clang::driver::toolchains::CudaToolChain::getSupportedSanitizers
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Cuda.cpp:890
clang::driver::ToolChain::getInputFilename
virtual std::string getInputFilename(const InputInfo &Input) const
Some toolchains need to modify the file name, for example to replace the extension for object files w...
Definition: ToolChain.cpp:253
clang::driver::InputInfo
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
clang::codegenoptions::DebugDirectivesOnly
@ DebugDirectivesOnly
Emit only debug directives with the line numbers data.
Definition: DebugInfoOptions.h:31
clang::driver::Action::OFK_OpenMP
@ OFK_OpenMP
Definition: Action.h:93
InputInfo.h
clang::driver::toolchains::CudaToolChain::CudaInstallation
CudaInstallationDetector CudaInstallation
Definition: Cuda.h:195
clang::driver::Driver::Diag
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:112
clang::driver::tools::AddStaticDeviceLibsLinking
void AddStaticDeviceLibsLinking(Compilation &C, const Tool &T, const JobAction &JA, const InputInfoList &Inputs, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CmdArgs, StringRef Arch, StringRef Target, bool isBitCodeSDL, bool postClangLink)
Definition: CommonArgs.cpp:1775
clang::CudaVersion::CUDA_90
@ CUDA_90
clang::driver::Tool
Tool - Information on a specific compilation tool.
Definition: Tool.h:32
Options.h
clang::driver::InputInfo::isFilename
bool isFilename() const
Definition: InputInfo.h:75
clang::driver::toolchains::CudaToolChain::supportsDebugInfoOption
bool supportsDebugInfoOption(const llvm::opt::Arg *A) const override
Does this toolchain supports given debug info option or not.
Definition: Cuda.cpp:774
clang::driver::toolchains::CudaToolChain::buildLinker
Tool * buildLinker() const override
Definition: Cuda.cpp:855
clang::interp::LE
bool LE(InterpState &S, CodePtr OpPC)
Definition: Interp.h:239
clang::driver::toolchains::CudaToolChain::HostTC
const ToolChain & HostTC
Definition: Cuda.h:194
clang::CudaVersion::CUDA_102
@ CUDA_102
llvm::opt
Definition: DiagnosticOptions.h:19
DriverDiagnostic.h
clang::CudaVersion::CUDA_110
@ CUDA_110
clang::driver::InputInfo::isNothing
bool isNothing() const
Definition: InputInfo.h:74
clang::CudaVersion
CudaVersion
Definition: Cuda.h:20
clang::driver::ToolChain::AddClangSystemIncludeArgs
virtual void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add the clang cc1 arguments for system include paths.
Definition: ToolChain.cpp:736
clang::driver::ToolChain::CXXStdlibType
CXXStdlibType
Definition: ToolChain.h:95
clang::driver::CudaInstallationDetector::getBinPath
StringRef getBinPath() const
Get the detected path to Cuda's bin directory.
Definition: Cuda.h:70
llvm::SmallString
Definition: LLVM.h:37
clang::driver::ToolChain::getTriple
const llvm::Triple & getTriple() const
Definition: ToolChain.h:223
clang::driver::Driver::SysRoot
std::string SysRoot
sysroot, if present
Definition: Driver.h:151
clang::driver::Action::OFK_Host
@ OFK_Host
Definition: Action.h:89
clang::driver::CudaInstallationDetector::getIncludePath
StringRef getIncludePath() const
Get the detected Cuda Include path.
Definition: Cuda.h:72
clang::CudaVersion::CUDA_75
@ CUDA_75
clang::driver::CudaInstallationDetector::getLibDeviceFile
std::string getLibDeviceFile(StringRef Gpu) const
Get libdevice file for given architecture.
Definition: Cuda.h:78
Line
const AnnotatedLine * Line
Definition: UsingDeclarationsSorter.cpp:68
clang::CudaVersion::FULLY_SUPPORTED
@ FULLY_SUPPORTED
clang::driver::tools::addOpenMPDeviceRTL
void addOpenMPDeviceRTL(const Driver &D, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, StringRef BitcodeSuffix, const llvm::Triple &Triple)
Definition: CommonArgs.cpp:1968
clang::driver::Driver::ResourceDir
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:135
clang::CudaVersion::CUDA_111
@ CUDA_111
clang::CudaArch::LAST
@ LAST
P
StringRef P
Definition: ASTMatchersInternal.cpp:563
clang::driver::ToolChain::getSupportedSanitizers
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:996
clang::driver::toolchains::CudaToolChain::AddClangCXXStdlibIncludeArgs
void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CC1Args) const override
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: Cuda.cpp:880
clang::driver::toolchains::CudaToolChain::getInputFilename
std::string getInputFilename(const InputInfo &Input) const override
Some toolchains need to modify the file name, for example to replace the extension for object files w...
Definition: Cuda.cpp:650
clang::driver::toolchains::CudaToolChain::addClangTargetOptions
void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const override
Add options that need to be passed to cc1 for this target.
Definition: Cuda.cpp:664
Compilation.h
clang::CudaArch::SM_30
@ SM_30
mustEmitDebugInfo
static DeviceDebugInfoLevel mustEmitDebugInfo(const ArgList &Args)
Define debug info level for the NVPTX devices.
Definition: Cuda.cpp:353
clang::driver::Distro
Distro - Helper class for detecting and classifying Linux distributions.
Definition: Distro.h:23
clang::driver::ToolChain
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:91
clang::driver::CudaInstallationDetector::WarnIfUnsupportedVersion
void WarnIfUnsupportedVersion()
Definition: Cuda.cpp:102
clang::CudaVersion::PARTIALLY_SUPPORTED
@ PARTIALLY_SUPPORTED
clang::driver::tools::NVPTX::Linker
Definition: Cuda.h:102
clang::driver::toolchains::CudaToolChain::AddCudaIncludeArgs
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use system-specific CUDA includes.
Definition: Cuda.cpp:801
clang::CudaArchToString
const char * CudaArchToString(CudaArch A)
Definition: Cuda.cpp:132
clang::CudaArch::UNKNOWN
@ UNKNOWN
clang::driver::toolchains::CudaToolChain::AddClangSystemIncludeArgs
void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add the clang cc1 arguments for system include paths.
Definition: Cuda.cpp:870
clang::driver::Action::getOffloadingDeviceKind
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:199
clang::driver::CudaInstallationDetector::AddCudaIncludeArgs
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Cuda.cpp:284
clang::CudaVersion::CUDA_92
@ CUDA_92
clang::driver::Compilation
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
clang::CudaVersionToString
const char * CudaVersionToString(CudaVersion V)
Definition: Cuda.cpp:11
clang::driver::Action::isDeviceOffloading
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:207
clang::driver::willEmitRemarks
bool willEmitRemarks(const llvm::opt::ArgList &Args)
clang::driver::ToolChain::GetCXXStdlibType
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:817
clang::driver::ToolChain::AddIAMCUIncludeArgs
virtual void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add arguments to use MCU GCC toolchain includes.
Definition: ToolChain.cpp:1032
Cuda.h
clang::driver::CudaInstallationDetector::CudaInstallationDetector
CudaInstallationDetector(const Driver &D, const llvm::Triple &HostTriple, const llvm::opt::ArgList &Args)
Definition: Cuda.cpp:116
clang::driver::InputInfo::getFilename
const char * getFilename() const
Definition: InputInfo.h:83
clang::MaxVersionForCudaArch
CudaVersion MaxVersionForCudaArch(CudaArch A)
Get the latest CudaVersion that supports the given CudaArch.
Definition: Cuda.cpp:197
CommonArgs.h
clang
Definition: CalledOnceCheck.h:17
clang::driver::Driver
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
clang::driver::InputInfo::getType
types::ID getType() const
Definition: InputInfo.h:77
shouldIncludePTX
static bool shouldIncludePTX(const ArgList &Args, const char *gpu_arch)
Definition: Cuda.cpp:482
clang::CudaVersion::CUDA_80
@ CUDA_80
clang::driver::ToolChain::TranslateArgs
virtual llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: ToolChain.h:306
clang::driver::toolchains::CudaToolChain::adjustDebugInfoKind
void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind, const llvm::opt::ArgList &Args) const override
Adjust debug information kind considering all passed options.
Definition: Cuda.cpp:786
clang::driver::CudaInstallationDetector::version
CudaVersion version() const
Get the detected Cuda install's version.
Definition: Cuda.h:63
clang::CudaArch
CudaArch
Definition: Cuda.h:46
clang::codegenoptions::DebugInfoKind
DebugInfoKind
Definition: DebugInfoOptions.h:20
clang::driver::tools::addDirectoryList
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
EnvVar is split by system delimiter for environment variables.
clang::driver::Driver::getVFS
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:329
clang::driver::ToolChain::addClangTargetOptions
virtual void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const
Add options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:741
Distro.h
clang::CudaVersion::CUDA_115
@ CUDA_115
clang::driver::Action::OffloadKind
OffloadKind
Definition: Action.h:85
clang::driver
Definition: Action.h:31
clang::driver::Action::isOffloading
bool isOffloading(OffloadKind OKind) const
Definition: Action.h:210
clang::driver::CudaInstallationDetector::print
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:325
clang::driver::tools::AddStaticDeviceLibsPostLinking
void AddStaticDeviceLibsPostLinking(const Driver &D, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CmdArgs, StringRef Arch, StringRef Target, bool isBitCodeSDL, bool postClangLink)
Definition: CommonArgs.cpp:1788
clang::CudaVersion::CUDA_113
@ CUDA_113
clang::driver::tools::NVPTX::OpenMPLinker
Definition: Cuda.h:114
clang::driver::JobAction
Definition: Action.h:380
clang::driver::CudaInstallationDetector::CheckCudaVersionSupportsArch
void CheckCudaVersionSupportsArch(CudaArch Arch) const
Emit an error if Version does not support the given Arch.
Definition: Cuda.cpp:308
clang::CudaVersion::UNKNOWN
@ UNKNOWN
clang::driver::toolchains::CudaToolChain::GetCXXStdlibType
CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override
Definition: Cuda.cpp:866
clang::driver::toolchains::CudaToolChain::getDefaultDenormalModeForType
llvm::DenormalMode getDefaultDenormalModeForType(const llvm::opt::ArgList &DriverArgs, const JobAction &JA, const llvm::fltSemantics *FPType=nullptr) const override
Returns the output denormal handling type in the default floating point environment for the given FPT...
Definition: Cuda.cpp:760
clang::IsNVIDIAGpuArch
static bool IsNVIDIAGpuArch(CudaArch A)
Definition: Cuda.h:101
CASE_CUDA_VERSION
#define CASE_CUDA_VERSION(CUDA_VER, PTX_VER)
clang::SanitizerMask
Definition: Sanitizers.h:30
clang::driver::ResponseFileSupport
Definition: Job.h:44
clang::CudaVersion::CUDA_112
@ CUDA_112