clang  10.0.0svn
Darwin.cpp
Go to the documentation of this file.
1 //===--- Darwin.cpp - Darwin 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 "Darwin.h"
10 #include "Arch/ARM.h"
11 #include "CommonArgs.h"
14 #include "clang/Config/config.h"
16 #include "clang/Driver/Driver.h"
18 #include "clang/Driver/Options.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/Option/ArgList.h"
22 #include "llvm/Support/Path.h"
23 #include "llvm/Support/ScopedPrinter.h"
24 #include "llvm/Support/TargetParser.h"
25 #include "llvm/Support/VirtualFileSystem.h"
26 #include <cstdlib> // ::getenv
27 
28 using namespace clang::driver;
29 using namespace clang::driver::tools;
30 using namespace clang::driver::toolchains;
31 using namespace clang;
32 using namespace llvm::opt;
33 
34 llvm::Triple::ArchType darwin::getArchTypeForMachOArchName(StringRef Str) {
35  // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
36  // archs which Darwin doesn't use.
37 
38  // The matching this routine does is fairly pointless, since it is neither the
39  // complete architecture list, nor a reasonable subset. The problem is that
40  // historically the driver driver accepts this and also ties its -march=
41  // handling to the architecture name, so we need to be careful before removing
42  // support for it.
43 
44  // This code must be kept in sync with Clang's Darwin specific argument
45  // translation.
46 
47  return llvm::StringSwitch<llvm::Triple::ArchType>(Str)
48  .Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc)
49  .Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc)
50  .Case("ppc64", llvm::Triple::ppc64)
51  .Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86)
52  .Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4",
53  llvm::Triple::x86)
54  .Cases("x86_64", "x86_64h", llvm::Triple::x86_64)
55  // This is derived from the driver driver.
56  .Cases("arm", "armv4t", "armv5", "armv6", "armv6m", llvm::Triple::arm)
57  .Cases("armv7", "armv7em", "armv7k", "armv7m", llvm::Triple::arm)
58  .Cases("armv7s", "xscale", llvm::Triple::arm)
59  .Case("arm64", llvm::Triple::aarch64)
60  .Case("r600", llvm::Triple::r600)
61  .Case("amdgcn", llvm::Triple::amdgcn)
62  .Case("nvptx", llvm::Triple::nvptx)
63  .Case("nvptx64", llvm::Triple::nvptx64)
64  .Case("amdil", llvm::Triple::amdil)
65  .Case("spir", llvm::Triple::spir)
66  .Default(llvm::Triple::UnknownArch);
67 }
68 
69 void darwin::setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str) {
70  const llvm::Triple::ArchType Arch = getArchTypeForMachOArchName(Str);
71  llvm::ARM::ArchKind ArchKind = llvm::ARM::parseArch(Str);
72  T.setArch(Arch);
73 
74  if (Str == "x86_64h")
75  T.setArchName(Str);
76  else if (ArchKind == llvm::ARM::ArchKind::ARMV6M ||
77  ArchKind == llvm::ARM::ArchKind::ARMV7M ||
78  ArchKind == llvm::ARM::ArchKind::ARMV7EM) {
79  T.setOS(llvm::Triple::UnknownOS);
80  T.setObjectFormat(llvm::Triple::MachO);
81  }
82 }
83 
85  const InputInfo &Output,
86  const InputInfoList &Inputs,
87  const ArgList &Args,
88  const char *LinkingOutput) const {
89  ArgStringList CmdArgs;
90 
91  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
92  const InputInfo &Input = Inputs[0];
93 
94  // Determine the original source input.
95  const Action *SourceAction = &JA;
96  while (SourceAction->getKind() != Action::InputClass) {
97  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
98  SourceAction = SourceAction->getInputs()[0];
99  }
100 
101  // If -fno-integrated-as is used add -Q to the darwin assembler driver to make
102  // sure it runs its system assembler not clang's integrated assembler.
103  // Applicable to darwin11+ and Xcode 4+. darwin<10 lacked integrated-as.
104  // FIXME: at run-time detect assembler capabilities or rely on version
105  // information forwarded by -target-assembler-version.
106  if (Args.hasArg(options::OPT_fno_integrated_as)) {
107  const llvm::Triple &T(getToolChain().getTriple());
108  if (!(T.isMacOSX() && T.isMacOSXVersionLT(10, 7)))
109  CmdArgs.push_back("-Q");
110  }
111 
112  // Forward -g, assuming we are dealing with an actual assembly file.
113  if (SourceAction->getType() == types::TY_Asm ||
114  SourceAction->getType() == types::TY_PP_Asm) {
115  if (Args.hasArg(options::OPT_gstabs))
116  CmdArgs.push_back("--gstabs");
117  else if (Args.hasArg(options::OPT_g_Group))
118  CmdArgs.push_back("-g");
119  }
120 
121  // Derived from asm spec.
122  AddMachOArch(Args, CmdArgs);
123 
124  // Use -force_cpusubtype_ALL on x86 by default.
125  if (getToolChain().getArch() == llvm::Triple::x86 ||
126  getToolChain().getArch() == llvm::Triple::x86_64 ||
127  Args.hasArg(options::OPT_force__cpusubtype__ALL))
128  CmdArgs.push_back("-force_cpusubtype_ALL");
129 
130  if (getToolChain().getArch() != llvm::Triple::x86_64 &&
131  (((Args.hasArg(options::OPT_mkernel) ||
132  Args.hasArg(options::OPT_fapple_kext)) &&
133  getMachOToolChain().isKernelStatic()) ||
134  Args.hasArg(options::OPT_static)))
135  CmdArgs.push_back("-static");
136 
137  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
138 
139  assert(Output.isFilename() && "Unexpected lipo output.");
140  CmdArgs.push_back("-o");
141  CmdArgs.push_back(Output.getFilename());
142 
143  assert(Input.isFilename() && "Invalid input.");
144  CmdArgs.push_back(Input.getFilename());
145 
146  // asm_final spec is empty.
147 
148  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
149  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
150 }
151 
152 void darwin::MachOTool::anchor() {}
153 
154 void darwin::MachOTool::AddMachOArch(const ArgList &Args,
155  ArgStringList &CmdArgs) const {
156  StringRef ArchName = getMachOToolChain().getMachOArchName(Args);
157 
158  // Derived from darwin_arch spec.
159  CmdArgs.push_back("-arch");
160  CmdArgs.push_back(Args.MakeArgString(ArchName));
161 
162  // FIXME: Is this needed anymore?
163  if (ArchName == "arm")
164  CmdArgs.push_back("-force_cpusubtype_ALL");
165 }
166 
167 bool darwin::Linker::NeedsTempPath(const InputInfoList &Inputs) const {
168  // We only need to generate a temp path for LTO if we aren't compiling object
169  // files. When compiling source files, we run 'dsymutil' after linking. We
170  // don't run 'dsymutil' when compiling object files.
171  for (const auto &Input : Inputs)
172  if (Input.getType() != types::TY_Object)
173  return true;
174 
175  return false;
176 }
177 
178 /// Pass -no_deduplicate to ld64 under certain conditions:
179 ///
180 /// - Either -O0 or -O1 is explicitly specified
181 /// - No -O option is specified *and* this is a compile+link (implicit -O0)
182 ///
183 /// Also do *not* add -no_deduplicate when no -O option is specified and this
184 /// is just a link (we can't imply -O0)
185 static bool shouldLinkerNotDedup(bool IsLinkerOnlyAction, const ArgList &Args) {
186  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
187  if (A->getOption().matches(options::OPT_O0))
188  return true;
189  if (A->getOption().matches(options::OPT_O))
190  return llvm::StringSwitch<bool>(A->getValue())
191  .Case("1", true)
192  .Default(false);
193  return false; // OPT_Ofast & OPT_O4
194  }
195 
196  if (!IsLinkerOnlyAction) // Implicit -O0 for compile+linker only.
197  return true;
198  return false;
199 }
200 
201 void darwin::Linker::AddLinkArgs(Compilation &C, const ArgList &Args,
202  ArgStringList &CmdArgs,
203  const InputInfoList &Inputs) const {
204  const Driver &D = getToolChain().getDriver();
205  const toolchains::MachO &MachOTC = getMachOToolChain();
206 
207  unsigned Version[5] = {0, 0, 0, 0, 0};
208  if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
209  if (!Driver::GetReleaseVersion(A->getValue(), Version))
210  D.Diag(diag::err_drv_invalid_version_number) << A->getAsString(Args);
211  }
212 
213  // Newer linkers support -demangle. Pass it if supported and not disabled by
214  // the user.
215  if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
216  CmdArgs.push_back("-demangle");
217 
218  if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137)
219  CmdArgs.push_back("-export_dynamic");
220 
221  // If we are using App Extension restrictions, pass a flag to the linker
222  // telling it that the compiled code has been audited.
223  if (Args.hasFlag(options::OPT_fapplication_extension,
224  options::OPT_fno_application_extension, false))
225  CmdArgs.push_back("-application_extension");
226 
227  if (D.isUsingLTO() && Version[0] >= 116 && NeedsTempPath(Inputs)) {
228  std::string TmpPathName;
229  if (D.getLTOMode() == LTOK_Full) {
230  // If we are using full LTO, then automatically create a temporary file
231  // path for the linker to use, so that it's lifetime will extend past a
232  // possible dsymutil step.
233  TmpPathName =
234  D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object));
235  } else if (D.getLTOMode() == LTOK_Thin)
236  // If we are using thin LTO, then create a directory instead.
237  TmpPathName = D.GetTemporaryDirectory("thinlto");
238 
239  if (!TmpPathName.empty()) {
240  auto *TmpPath = C.getArgs().MakeArgString(TmpPathName);
241  C.addTempFile(TmpPath);
242  CmdArgs.push_back("-object_path_lto");
243  CmdArgs.push_back(TmpPath);
244  }
245  }
246 
247  // Use -lto_library option to specify the libLTO.dylib path. Try to find
248  // it in clang installed libraries. ld64 will only look at this argument
249  // when it actually uses LTO, so libLTO.dylib only needs to exist at link
250  // time if ld64 decides that it needs to use LTO.
251  // Since this is passed unconditionally, ld64 will never look for libLTO.dylib
252  // next to it. That's ok since ld64 using a libLTO.dylib not matching the
253  // clang version won't work anyways.
254  if (Version[0] >= 133) {
255  // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
256  StringRef P = llvm::sys::path::parent_path(D.Dir);
257  SmallString<128> LibLTOPath(P);
258  llvm::sys::path::append(LibLTOPath, "lib");
259  llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
260  CmdArgs.push_back("-lto_library");
261  CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
262  }
263 
264  // ld64 version 262 and above run the deduplicate pass by default.
265  if (Version[0] >= 262 && shouldLinkerNotDedup(C.getJobs().empty(), Args))
266  CmdArgs.push_back("-no_deduplicate");
267 
268  // Derived from the "link" spec.
269  Args.AddAllArgs(CmdArgs, options::OPT_static);
270  if (!Args.hasArg(options::OPT_static))
271  CmdArgs.push_back("-dynamic");
272  if (Args.hasArg(options::OPT_fgnu_runtime)) {
273  // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
274  // here. How do we wish to handle such things?
275  }
276 
277  if (!Args.hasArg(options::OPT_dynamiclib)) {
278  AddMachOArch(Args, CmdArgs);
279  // FIXME: Why do this only on this path?
280  Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
281 
282  Args.AddLastArg(CmdArgs, options::OPT_bundle);
283  Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
284  Args.AddAllArgs(CmdArgs, options::OPT_client__name);
285 
286  Arg *A;
287  if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
288  (A = Args.getLastArg(options::OPT_current__version)) ||
289  (A = Args.getLastArg(options::OPT_install__name)))
290  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
291  << "-dynamiclib";
292 
293  Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
294  Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
295  Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
296  } else {
297  CmdArgs.push_back("-dylib");
298 
299  Arg *A;
300  if ((A = Args.getLastArg(options::OPT_bundle)) ||
301  (A = Args.getLastArg(options::OPT_bundle__loader)) ||
302  (A = Args.getLastArg(options::OPT_client__name)) ||
303  (A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
304  (A = Args.getLastArg(options::OPT_keep__private__externs)) ||
305  (A = Args.getLastArg(options::OPT_private__bundle)))
306  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
307  << "-dynamiclib";
308 
309  Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
310  "-dylib_compatibility_version");
311  Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
312  "-dylib_current_version");
313 
314  AddMachOArch(Args, CmdArgs);
315 
316  Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
317  "-dylib_install_name");
318  }
319 
320  Args.AddLastArg(CmdArgs, options::OPT_all__load);
321  Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
322  Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
323  if (MachOTC.isTargetIOSBased())
324  Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
325  Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
326  Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
327  Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
328  Args.AddLastArg(CmdArgs, options::OPT_dynamic);
329  Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
330  Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
331  Args.AddAllArgs(CmdArgs, options::OPT_force__load);
332  Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
333  Args.AddAllArgs(CmdArgs, options::OPT_image__base);
334  Args.AddAllArgs(CmdArgs, options::OPT_init);
335 
336  // Add the deployment target.
337  MachOTC.addMinVersionArgs(Args, CmdArgs);
338 
339  Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
340  Args.AddLastArg(CmdArgs, options::OPT_multi__module);
341  Args.AddLastArg(CmdArgs, options::OPT_single__module);
342  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
343  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
344 
345  if (const Arg *A =
346  Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
347  options::OPT_fno_pie, options::OPT_fno_PIE)) {
348  if (A->getOption().matches(options::OPT_fpie) ||
349  A->getOption().matches(options::OPT_fPIE))
350  CmdArgs.push_back("-pie");
351  else
352  CmdArgs.push_back("-no_pie");
353  }
354 
355  // for embed-bitcode, use -bitcode_bundle in linker command
356  if (C.getDriver().embedBitcodeEnabled()) {
357  // Check if the toolchain supports bitcode build flow.
358  if (MachOTC.SupportsEmbeddedBitcode()) {
359  CmdArgs.push_back("-bitcode_bundle");
360  if (C.getDriver().embedBitcodeMarkerOnly() && Version[0] >= 278) {
361  CmdArgs.push_back("-bitcode_process_mode");
362  CmdArgs.push_back("marker");
363  }
364  } else
365  D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
366  }
367 
368  Args.AddLastArg(CmdArgs, options::OPT_prebind);
369  Args.AddLastArg(CmdArgs, options::OPT_noprebind);
370  Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
371  Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
372  Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
373  Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
374  Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
375  Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
376  Args.AddAllArgs(CmdArgs, options::OPT_segprot);
377  Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
378  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
379  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
380  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
381  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
382  Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
383  Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
384 
385  // Give --sysroot= preference, over the Apple specific behavior to also use
386  // --isysroot as the syslibroot.
387  StringRef sysroot = C.getSysRoot();
388  if (sysroot != "") {
389  CmdArgs.push_back("-syslibroot");
390  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
391  } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
392  CmdArgs.push_back("-syslibroot");
393  CmdArgs.push_back(A->getValue());
394  }
395 
396  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
397  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
398  Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
399  Args.AddAllArgs(CmdArgs, options::OPT_undefined);
400  Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
401  Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
402  Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
403  Args.AddAllArgs(CmdArgs, options::OPT_y);
404  Args.AddLastArg(CmdArgs, options::OPT_w);
405  Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
406  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
407  Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
408  Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
409  Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
410  Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
411  Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
412  Args.AddLastArg(CmdArgs, options::OPT_whyload);
413  Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
414  Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
415  Args.AddLastArg(CmdArgs, options::OPT_dylinker);
416  Args.AddLastArg(CmdArgs, options::OPT_Mach);
417 }
418 
419 /// Determine whether we are linking the ObjC runtime.
420 static bool isObjCRuntimeLinked(const ArgList &Args) {
421  if (isObjCAutoRefCount(Args)) {
422  Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
423  return true;
424  }
425  return Args.hasArg(options::OPT_fobjc_link_runtime);
426 }
427 
429  const InputInfo &Output,
430  const InputInfoList &Inputs,
431  const ArgList &Args,
432  const char *LinkingOutput) const {
433  assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
434 
435  // If the number of arguments surpasses the system limits, we will encode the
436  // input files in a separate file, shortening the command line. To this end,
437  // build a list of input file names that can be passed via a file with the
438  // -filelist linker option.
439  llvm::opt::ArgStringList InputFileList;
440 
441  // The logic here is derived from gcc's behavior; most of which
442  // comes from specs (starting with link_command). Consult gcc for
443  // more information.
444  ArgStringList CmdArgs;
445 
446  /// Hack(tm) to ignore linking errors when we are doing ARC migration.
447  if (Args.hasArg(options::OPT_ccc_arcmt_check,
448  options::OPT_ccc_arcmt_migrate)) {
449  for (const auto &Arg : Args)
450  Arg->claim();
451  const char *Exec =
452  Args.MakeArgString(getToolChain().GetProgramPath("touch"));
453  CmdArgs.push_back(Output.getFilename());
454  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
455  return;
456  }
457 
458  // I'm not sure why this particular decomposition exists in gcc, but
459  // we follow suite for ease of comparison.
460  AddLinkArgs(C, Args, CmdArgs, Inputs);
461 
462  // For LTO, pass the name of the optimization record file and other
463  // opt-remarks flags.
464  if (Args.hasFlag(options::OPT_fsave_optimization_record,
465  options::OPT_fsave_optimization_record_EQ,
466  options::OPT_fno_save_optimization_record, false)) {
467  CmdArgs.push_back("-mllvm");
468  CmdArgs.push_back("-lto-pass-remarks-output");
469  CmdArgs.push_back("-mllvm");
470 
472  F = Output.getFilename();
473  F += ".opt.";
474  if (const Arg *A =
475  Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
476  F += A->getValue();
477  else
478  F += "yaml";
479 
480  CmdArgs.push_back(Args.MakeArgString(F));
481 
482  if (getLastProfileUseArg(Args)) {
483  CmdArgs.push_back("-mllvm");
484  CmdArgs.push_back("-lto-pass-remarks-with-hotness");
485 
486  if (const Arg *A =
487  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
488  CmdArgs.push_back("-mllvm");
489  std::string Opt =
490  std::string("-lto-pass-remarks-hotness-threshold=") + A->getValue();
491  CmdArgs.push_back(Args.MakeArgString(Opt));
492  }
493  }
494 
495  if (const Arg *A =
496  Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
497  CmdArgs.push_back("-mllvm");
498  std::string Passes =
499  std::string("-lto-pass-remarks-filter=") + A->getValue();
500  CmdArgs.push_back(Args.MakeArgString(Passes));
501  }
502 
503  if (const Arg *A =
504  Args.getLastArg(options::OPT_fsave_optimization_record_EQ)) {
505  CmdArgs.push_back("-mllvm");
506  std::string Format =
507  std::string("-lto-pass-remarks-format=") + A->getValue();
508  CmdArgs.push_back(Args.MakeArgString(Format));
509  }
510  }
511 
512  // Propagate the -moutline flag to the linker in LTO.
513  if (Arg *A =
514  Args.getLastArg(options::OPT_moutline, options::OPT_mno_outline)) {
515  if (A->getOption().matches(options::OPT_moutline)) {
516  if (getMachOToolChain().getMachOArchName(Args) == "arm64") {
517  CmdArgs.push_back("-mllvm");
518  CmdArgs.push_back("-enable-machine-outliner");
519 
520  // Outline from linkonceodr functions by default in LTO.
521  CmdArgs.push_back("-mllvm");
522  CmdArgs.push_back("-enable-linkonceodr-outlining");
523  }
524  } else {
525  // Disable all outlining behaviour if we have mno-outline. We need to do
526  // this explicitly, because targets which support default outlining will
527  // try to do work if we don't.
528  CmdArgs.push_back("-mllvm");
529  CmdArgs.push_back("-enable-machine-outliner=never");
530  }
531  }
532 
533  // Setup statistics file output.
534  SmallString<128> StatsFile =
535  getStatsFileName(Args, Output, Inputs[0], getToolChain().getDriver());
536  if (!StatsFile.empty()) {
537  CmdArgs.push_back("-mllvm");
538  CmdArgs.push_back(Args.MakeArgString("-lto-stats-file=" + StatsFile.str()));
539  }
540 
541  // It seems that the 'e' option is completely ignored for dynamic executables
542  // (the default), and with static executables, the last one wins, as expected.
543  Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
544  options::OPT_Z_Flag, options::OPT_u_Group,
545  options::OPT_e, options::OPT_r});
546 
547  // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
548  // members of static archive libraries which implement Objective-C classes or
549  // categories.
550  if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
551  CmdArgs.push_back("-ObjC");
552 
553  CmdArgs.push_back("-o");
554  CmdArgs.push_back(Output.getFilename());
555 
556  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
557  getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
558 
559  Args.AddAllArgs(CmdArgs, options::OPT_L);
560 
561  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
562  // Build the input file for -filelist (list of linker input files) in case we
563  // need it later
564  for (const auto &II : Inputs) {
565  if (!II.isFilename()) {
566  // This is a linker input argument.
567  // We cannot mix input arguments and file names in a -filelist input, thus
568  // we prematurely stop our list (remaining files shall be passed as
569  // arguments).
570  if (InputFileList.size() > 0)
571  break;
572 
573  continue;
574  }
575 
576  InputFileList.push_back(II.getFilename());
577  }
578 
579  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
580  addOpenMPRuntime(CmdArgs, getToolChain(), Args);
581 
582  if (isObjCRuntimeLinked(Args) &&
583  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
584  // We use arclite library for both ARC and subscripting support.
585  getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
586 
587  CmdArgs.push_back("-framework");
588  CmdArgs.push_back("Foundation");
589  // Link libobj.
590  CmdArgs.push_back("-lobjc");
591  }
592 
593  if (LinkingOutput) {
594  CmdArgs.push_back("-arch_multiple");
595  CmdArgs.push_back("-final_output");
596  CmdArgs.push_back(LinkingOutput);
597  }
598 
599  if (Args.hasArg(options::OPT_fnested_functions))
600  CmdArgs.push_back("-allow_stack_execute");
601 
602  getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
603 
604  if (unsigned Parallelism =
605  getLTOParallelism(Args, getToolChain().getDriver())) {
606  CmdArgs.push_back("-mllvm");
607  CmdArgs.push_back(Args.MakeArgString("-threads=" + Twine(Parallelism)));
608  }
609 
610  if (getToolChain().ShouldLinkCXXStdlib(Args))
611  getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
612 
613  bool NoStdOrDefaultLibs =
614  Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
615  bool ForceLinkBuiltins = Args.hasArg(options::OPT_fapple_link_rtlib);
616  if (!NoStdOrDefaultLibs || ForceLinkBuiltins) {
617  // link_ssp spec is empty.
618 
619  // If we have both -nostdlib/nodefaultlibs and -fapple-link-rtlib then
620  // we just want to link the builtins, not the other libs like libSystem.
621  if (NoStdOrDefaultLibs && ForceLinkBuiltins) {
622  getMachOToolChain().AddLinkRuntimeLib(Args, CmdArgs, "builtins");
623  } else {
624  // Let the tool chain choose which runtime library to link.
625  getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs,
626  ForceLinkBuiltins);
627 
628  // No need to do anything for pthreads. Claim argument to avoid warning.
629  Args.ClaimAllArgs(options::OPT_pthread);
630  Args.ClaimAllArgs(options::OPT_pthreads);
631  }
632  }
633 
634  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
635  // endfile_spec is empty.
636  }
637 
638  Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
639  Args.AddAllArgs(CmdArgs, options::OPT_F);
640 
641  // -iframework should be forwarded as -F.
642  for (const Arg *A : Args.filtered(options::OPT_iframework))
643  CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
644 
645  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
646  if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
647  if (A->getValue() == StringRef("Accelerate")) {
648  CmdArgs.push_back("-framework");
649  CmdArgs.push_back("Accelerate");
650  }
651  }
652  }
653 
654  const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
655  std::unique_ptr<Command> Cmd =
656  std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
657  Cmd->setInputFileList(std::move(InputFileList));
658  C.addCommand(std::move(Cmd));
659 }
660 
662  const InputInfo &Output,
663  const InputInfoList &Inputs,
664  const ArgList &Args,
665  const char *LinkingOutput) const {
666  ArgStringList CmdArgs;
667 
668  CmdArgs.push_back("-create");
669  assert(Output.isFilename() && "Unexpected lipo output.");
670 
671  CmdArgs.push_back("-output");
672  CmdArgs.push_back(Output.getFilename());
673 
674  for (const auto &II : Inputs) {
675  assert(II.isFilename() && "Unexpected lipo input.");
676  CmdArgs.push_back(II.getFilename());
677  }
678 
679  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
680  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
681 }
682 
684  const InputInfo &Output,
685  const InputInfoList &Inputs,
686  const ArgList &Args,
687  const char *LinkingOutput) const {
688  ArgStringList CmdArgs;
689 
690  CmdArgs.push_back("-o");
691  CmdArgs.push_back(Output.getFilename());
692 
693  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
694  const InputInfo &Input = Inputs[0];
695  assert(Input.isFilename() && "Unexpected dsymutil input.");
696  CmdArgs.push_back(Input.getFilename());
697 
698  const char *Exec =
699  Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
700  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
701 }
702 
704  const InputInfo &Output,
705  const InputInfoList &Inputs,
706  const ArgList &Args,
707  const char *LinkingOutput) const {
708  ArgStringList CmdArgs;
709  CmdArgs.push_back("--verify");
710  CmdArgs.push_back("--debug-info");
711  CmdArgs.push_back("--eh-frame");
712  CmdArgs.push_back("--quiet");
713 
714  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
715  const InputInfo &Input = Inputs[0];
716  assert(Input.isFilename() && "Unexpected verify input");
717 
718  // Grabbing the output of the earlier dsymutil run.
719  CmdArgs.push_back(Input.getFilename());
720 
721  const char *Exec =
722  Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
723  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
724 }
725 
726 MachO::MachO(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
727  : ToolChain(D, Triple, Args) {
728  // We expect 'as', 'ld', etc. to be adjacent to our install dir.
729  getProgramPaths().push_back(getDriver().getInstalledDir());
730  if (getDriver().getInstalledDir() != getDriver().Dir)
731  getProgramPaths().push_back(getDriver().Dir);
732 }
733 
734 /// Darwin - Darwin tool chain for i386 and x86_64.
735 Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
736  : MachO(D, Triple, Args), TargetInitialized(false),
737  CudaInstallation(D, Triple, Args) {}
738 
741 
742  // Darwin always preprocesses assembly files (unless -x is used explicitly).
743  if (Ty == types::TY_PP_Asm)
744  return types::TY_Asm;
745 
746  return Ty;
747 }
748 
749 bool MachO::HasNativeLLVMSupport() const { return true; }
750 
752  // Default to use libc++ on OS X 10.9+ and iOS 7+.
753  if ((isTargetMacOS() && !isMacosxVersionLT(10, 9)) ||
754  (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
756  return ToolChain::CST_Libcxx;
757 
759 }
760 
761 /// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
762 ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
763  if (isTargetWatchOSBased())
765  if (isTargetIOSBased())
767  if (isNonFragile)
770 }
771 
772 /// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
774  if (isTargetWatchOSBased())
775  return true;
776  else if (isTargetIOSBased())
777  return !isIPhoneOSVersionLT(3, 2);
778  else {
779  assert(isTargetMacOS() && "unexpected darwin target");
780  return !isMacosxVersionLT(10, 6);
781  }
782 }
783 
784 void Darwin::AddCudaIncludeArgs(const ArgList &DriverArgs,
785  ArgStringList &CC1Args) const {
786  CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
787 }
788 
789 // This is just a MachO name translation routine and there's no
790 // way to join this into ARMTargetParser without breaking all
791 // other assumptions. Maybe MachO should consider standardising
792 // their nomenclature.
793 static const char *ArmMachOArchName(StringRef Arch) {
794  return llvm::StringSwitch<const char *>(Arch)
795  .Case("armv6k", "armv6")
796  .Case("armv6m", "armv6m")
797  .Case("armv5tej", "armv5")
798  .Case("xscale", "xscale")
799  .Case("armv4t", "armv4t")
800  .Case("armv7", "armv7")
801  .Cases("armv7a", "armv7-a", "armv7")
802  .Cases("armv7r", "armv7-r", "armv7")
803  .Cases("armv7em", "armv7e-m", "armv7em")
804  .Cases("armv7k", "armv7-k", "armv7k")
805  .Cases("armv7m", "armv7-m", "armv7m")
806  .Cases("armv7s", "armv7-s", "armv7s")
807  .Default(nullptr);
808 }
809 
810 static const char *ArmMachOArchNameCPU(StringRef CPU) {
811  llvm::ARM::ArchKind ArchKind = llvm::ARM::parseCPUArch(CPU);
812  if (ArchKind == llvm::ARM::ArchKind::INVALID)
813  return nullptr;
814  StringRef Arch = llvm::ARM::getArchName(ArchKind);
815 
816  // FIXME: Make sure this MachO triple mangling is really necessary.
817  // ARMv5* normalises to ARMv5.
818  if (Arch.startswith("armv5"))
819  Arch = Arch.substr(0, 5);
820  // ARMv6*, except ARMv6M, normalises to ARMv6.
821  else if (Arch.startswith("armv6") && !Arch.endswith("6m"))
822  Arch = Arch.substr(0, 5);
823  // ARMv7A normalises to ARMv7.
824  else if (Arch.endswith("v7a"))
825  Arch = Arch.substr(0, 5);
826  return Arch.data();
827 }
828 
829 StringRef MachO::getMachOArchName(const ArgList &Args) const {
830  switch (getTriple().getArch()) {
831  default:
833 
834  case llvm::Triple::aarch64:
835  return "arm64";
836 
837  case llvm::Triple::thumb:
838  case llvm::Triple::arm:
839  if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ))
840  if (const char *Arch = ArmMachOArchName(A->getValue()))
841  return Arch;
842 
843  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
844  if (const char *Arch = ArmMachOArchNameCPU(A->getValue()))
845  return Arch;
846 
847  return "arm";
848  }
849 }
850 
852 
854 
855 std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
856  types::ID InputType) const {
857  llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
858 
859  // If the target isn't initialized (e.g., an unknown Darwin platform, return
860  // the default triple).
861  if (!isTargetInitialized())
862  return Triple.getTriple();
863 
864  SmallString<16> Str;
865  if (isTargetWatchOSBased())
866  Str += "watchos";
867  else if (isTargetTvOSBased())
868  Str += "tvos";
869  else if (isTargetIOSBased())
870  Str += "ios";
871  else
872  Str += "macosx";
873  Str += getTargetVersion().getAsString();
874  Triple.setOSName(Str);
875 
876  return Triple.getTriple();
877 }
878 
880  switch (AC) {
882  if (!Lipo)
883  Lipo.reset(new tools::darwin::Lipo(*this));
884  return Lipo.get();
886  if (!Dsymutil)
887  Dsymutil.reset(new tools::darwin::Dsymutil(*this));
888  return Dsymutil.get();
890  if (!VerifyDebug)
891  VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
892  return VerifyDebug.get();
893  default:
894  return ToolChain::getTool(AC);
895  }
896 }
897 
898 Tool *MachO::buildLinker() const { return new tools::darwin::Linker(*this); }
899 
901  return new tools::darwin::Assembler(*this);
902 }
903 
904 DarwinClang::DarwinClang(const Driver &D, const llvm::Triple &Triple,
905  const ArgList &Args)
906  : Darwin(D, Triple, Args) {}
907 
908 void DarwinClang::addClangWarningOptions(ArgStringList &CC1Args) const {
909  // For modern targets, promote certain warnings to errors.
910  if (isTargetWatchOSBased() || getTriple().isArch64Bit()) {
911  // Always enable -Wdeprecated-objc-isa-usage and promote it
912  // to an error.
913  CC1Args.push_back("-Wdeprecated-objc-isa-usage");
914  CC1Args.push_back("-Werror=deprecated-objc-isa-usage");
915 
916  // For iOS and watchOS, also error about implicit function declarations,
917  // as that can impact calling conventions.
918  if (!isTargetMacOS())
919  CC1Args.push_back("-Werror=implicit-function-declaration");
920  }
921 }
922 
923 /// Take a path that speculatively points into Xcode and return the
924 /// `XCODE/Contents/Developer` path if it is an Xcode path, or an empty path
925 /// otherwise.
926 static StringRef getXcodeDeveloperPath(StringRef PathIntoXcode) {
927  static constexpr llvm::StringLiteral XcodeAppSuffix(
928  ".app/Contents/Developer");
929  size_t Index = PathIntoXcode.find(XcodeAppSuffix);
930  if (Index == StringRef::npos)
931  return "";
932  return PathIntoXcode.take_front(Index + XcodeAppSuffix.size());
933 }
934 
935 void DarwinClang::AddLinkARCArgs(const ArgList &Args,
936  ArgStringList &CmdArgs) const {
937  // Avoid linking compatibility stubs on i386 mac.
938  if (isTargetMacOS() && getArch() == llvm::Triple::x86)
939  return;
940 
941  ObjCRuntime runtime = getDefaultObjCRuntime(/*nonfragile*/ true);
942 
943  if ((runtime.hasNativeARC() || !isObjCAutoRefCount(Args)) &&
944  runtime.hasSubscripting())
945  return;
946 
947  SmallString<128> P(getDriver().ClangExecutable);
948  llvm::sys::path::remove_filename(P); // 'clang'
949  llvm::sys::path::remove_filename(P); // 'bin'
950 
951  // 'libarclite' usually lives in the same toolchain as 'clang'. However, the
952  // Swift open source toolchains for macOS distribute Clang without libarclite.
953  // In that case, to allow the linker to find 'libarclite', we point to the
954  // 'libarclite' in the XcodeDefault toolchain instead.
955  if (getXcodeDeveloperPath(P).empty()) {
956  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
957  // Try to infer the path to 'libarclite' in the toolchain from the
958  // specified SDK path.
959  StringRef XcodePathForSDK = getXcodeDeveloperPath(A->getValue());
960  if (!XcodePathForSDK.empty()) {
961  P = XcodePathForSDK;
962  llvm::sys::path::append(P, "Toolchains/XcodeDefault.xctoolchain/usr");
963  }
964  }
965  }
966 
967  CmdArgs.push_back("-force_load");
968  llvm::sys::path::append(P, "lib", "arc", "libarclite_");
969  // Mash in the platform.
971  P += "watchsimulator";
972  else if (isTargetWatchOS())
973  P += "watchos";
974  else if (isTargetTvOSSimulator())
975  P += "appletvsimulator";
976  else if (isTargetTvOS())
977  P += "appletvos";
978  else if (isTargetIOSSimulator())
979  P += "iphonesimulator";
980  else if (isTargetIPhoneOS())
981  P += "iphoneos";
982  else
983  P += "macosx";
984  P += ".a";
985 
986  CmdArgs.push_back(Args.MakeArgString(P));
987 }
988 
990  // Default to use DWARF 2 on OS X 10.10 / iOS 8 and lower.
991  if ((isTargetMacOS() && isMacosxVersionLT(10, 11)) ||
993  return 2;
994  return 4;
995 }
996 
997 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
998  StringRef Component, RuntimeLinkOptions Opts,
999  bool IsShared) const {
1000  SmallString<64> DarwinLibName = StringRef("libclang_rt.");
1001  // an Darwin the builtins compomnent is not in the library name
1002  if (Component != "builtins") {
1003  DarwinLibName += Component;
1004  if (!(Opts & RLO_IsEmbedded))
1005  DarwinLibName += "_";
1006  DarwinLibName += getOSLibraryNameSuffix();
1007  } else
1008  DarwinLibName += getOSLibraryNameSuffix(true);
1009 
1010  DarwinLibName += IsShared ? "_dynamic.dylib" : ".a";
1011  SmallString<128> Dir(getDriver().ResourceDir);
1012  llvm::sys::path::append(
1013  Dir, "lib", (Opts & RLO_IsEmbedded) ? "macho_embedded" : "darwin");
1014 
1015  SmallString<128> P(Dir);
1016  llvm::sys::path::append(P, DarwinLibName);
1017 
1018  // For now, allow missing resource libraries to support developers who may
1019  // not have compiler-rt checked out or integrated into their build (unless
1020  // we explicitly force linking with this library).
1021  if ((Opts & RLO_AlwaysLink) || getVFS().exists(P)) {
1022  const char *LibArg = Args.MakeArgString(P);
1023  if (Opts & RLO_FirstLink)
1024  CmdArgs.insert(CmdArgs.begin(), LibArg);
1025  else
1026  CmdArgs.push_back(LibArg);
1027  }
1028 
1029  // Adding the rpaths might negatively interact when other rpaths are involved,
1030  // so we should make sure we add the rpaths last, after all user-specified
1031  // rpaths. This is currently true from this place, but we need to be
1032  // careful if this function is ever called before user's rpaths are emitted.
1033  if (Opts & RLO_AddRPath) {
1034  assert(DarwinLibName.endswith(".dylib") && "must be a dynamic library");
1035 
1036  // Add @executable_path to rpath to support having the dylib copied with
1037  // the executable.
1038  CmdArgs.push_back("-rpath");
1039  CmdArgs.push_back("@executable_path");
1040 
1041  // Add the path to the resource dir to rpath to support using the dylib
1042  // from the default location without copying.
1043  CmdArgs.push_back("-rpath");
1044  CmdArgs.push_back(Args.MakeArgString(Dir));
1045  }
1046 }
1047 
1048 StringRef Darwin::getPlatformFamily() const {
1049  switch (TargetPlatform) {
1050  case DarwinPlatformKind::MacOS:
1051  return "MacOSX";
1052  case DarwinPlatformKind::IPhoneOS:
1053  return "iPhone";
1054  case DarwinPlatformKind::TvOS:
1055  return "AppleTV";
1056  case DarwinPlatformKind::WatchOS:
1057  return "Watch";
1058  }
1059  llvm_unreachable("Unsupported platform");
1060 }
1061 
1062 StringRef Darwin::getSDKName(StringRef isysroot) {
1063  // Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
1064  llvm::sys::path::const_iterator SDKDir;
1065  auto BeginSDK = llvm::sys::path::begin(isysroot);
1066  auto EndSDK = llvm::sys::path::end(isysroot);
1067  for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
1068  StringRef SDK = *IT;
1069  if (SDK.endswith(".sdk"))
1070  return SDK.slice(0, SDK.size() - 4);
1071  }
1072  return "";
1073 }
1074 
1075 StringRef Darwin::getOSLibraryNameSuffix(bool IgnoreSim) const {
1076  switch (TargetPlatform) {
1077  case DarwinPlatformKind::MacOS:
1078  return "osx";
1079  case DarwinPlatformKind::IPhoneOS:
1080  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "ios"
1081  : "iossim";
1082  case DarwinPlatformKind::TvOS:
1083  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "tvos"
1084  : "tvossim";
1085  case DarwinPlatformKind::WatchOS:
1086  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "watchos"
1087  : "watchossim";
1088  }
1089  llvm_unreachable("Unsupported platform");
1090 }
1091 
1092 /// Check if the link command contains a symbol export directive.
1093 static bool hasExportSymbolDirective(const ArgList &Args) {
1094  for (Arg *A : Args) {
1095  if (A->getOption().matches(options::OPT_exported__symbols__list))
1096  return true;
1097  if (!A->getOption().matches(options::OPT_Wl_COMMA) &&
1098  !A->getOption().matches(options::OPT_Xlinker))
1099  continue;
1100  if (A->containsValue("-exported_symbols_list") ||
1101  A->containsValue("-exported_symbol"))
1102  return true;
1103  }
1104  return false;
1105 }
1106 
1107 /// Add an export directive for \p Symbol to the link command.
1108 static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
1109  CmdArgs.push_back("-exported_symbol");
1110  CmdArgs.push_back(Symbol);
1111 }
1112 
1113 void Darwin::addProfileRTLibs(const ArgList &Args,
1114  ArgStringList &CmdArgs) const {
1115  if (!needsProfileRT(Args)) return;
1116 
1117  AddLinkRuntimeLib(Args, CmdArgs, "profile",
1119 
1120  // If we have a symbol export directive and we're linking in the profile
1121  // runtime, automatically export symbols necessary to implement some of the
1122  // runtime's functionality.
1123  if (hasExportSymbolDirective(Args)) {
1124  if (needsGCovInstrumentation(Args)) {
1125  addExportedSymbol(CmdArgs, "___gcov_flush");
1126  addExportedSymbol(CmdArgs, "_flush_fn_list");
1127  addExportedSymbol(CmdArgs, "_writeout_fn_list");
1128  } else {
1129  addExportedSymbol(CmdArgs, "___llvm_profile_filename");
1130  addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
1131  }
1132  addExportedSymbol(CmdArgs, "_lprofDirMode");
1133  }
1134 }
1135 
1136 void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
1137  ArgStringList &CmdArgs,
1138  StringRef Sanitizer,
1139  bool Shared) const {
1140  auto RLO = RuntimeLinkOptions(RLO_AlwaysLink | (Shared ? RLO_AddRPath : 0U));
1141  AddLinkRuntimeLib(Args, CmdArgs, Sanitizer, RLO, Shared);
1142 }
1143 
1145  const ArgList &Args) const {
1146  if (Arg* A = Args.getLastArg(options::OPT_rtlib_EQ)) {
1147  StringRef Value = A->getValue();
1148  if (Value != "compiler-rt")
1149  getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
1150  << Value << "darwin";
1151  }
1152 
1154 }
1155 
1156 void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
1157  ArgStringList &CmdArgs,
1158  bool ForceLinkBuiltinRT) const {
1159  // Call once to ensure diagnostic is printed if wrong value was specified
1160  GetRuntimeLibType(Args);
1161 
1162  // Darwin doesn't support real static executables, don't link any runtime
1163  // libraries with -static.
1164  if (Args.hasArg(options::OPT_static) ||
1165  Args.hasArg(options::OPT_fapple_kext) ||
1166  Args.hasArg(options::OPT_mkernel)) {
1167  if (ForceLinkBuiltinRT)
1168  AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1169  return;
1170  }
1171 
1172  // Reject -static-libgcc for now, we can deal with this when and if someone
1173  // cares. This is useful in situations where someone wants to statically link
1174  // something like libstdc++, and needs its runtime support routines.
1175  if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
1176  getDriver().Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
1177  return;
1178  }
1179 
1180  const SanitizerArgs &Sanitize = getSanitizerArgs();
1181  if (Sanitize.needsAsanRt())
1182  AddLinkSanitizerLibArgs(Args, CmdArgs, "asan");
1183  if (Sanitize.needsLsanRt())
1184  AddLinkSanitizerLibArgs(Args, CmdArgs, "lsan");
1185  if (Sanitize.needsUbsanRt())
1186  AddLinkSanitizerLibArgs(Args, CmdArgs,
1187  Sanitize.requiresMinimalRuntime() ? "ubsan_minimal"
1188  : "ubsan",
1189  Sanitize.needsSharedRt());
1190  if (Sanitize.needsTsanRt())
1191  AddLinkSanitizerLibArgs(Args, CmdArgs, "tsan");
1192  if (Sanitize.needsFuzzer() && !Args.hasArg(options::OPT_dynamiclib)) {
1193  AddLinkSanitizerLibArgs(Args, CmdArgs, "fuzzer", /*shared=*/false);
1194 
1195  // Libfuzzer is written in C++ and requires libcxx.
1196  AddCXXStdlibLibArgs(Args, CmdArgs);
1197  }
1198  if (Sanitize.needsStatsRt()) {
1199  AddLinkRuntimeLib(Args, CmdArgs, "stats_client", RLO_AlwaysLink);
1200  AddLinkSanitizerLibArgs(Args, CmdArgs, "stats");
1201  }
1202 
1203  const XRayArgs &XRay = getXRayArgs();
1204  if (XRay.needsXRayRt()) {
1205  AddLinkRuntimeLib(Args, CmdArgs, "xray");
1206  AddLinkRuntimeLib(Args, CmdArgs, "xray-basic");
1207  AddLinkRuntimeLib(Args, CmdArgs, "xray-fdr");
1208  }
1209 
1210  // Otherwise link libSystem, then the dynamic runtime library, and finally any
1211  // target specific static runtime library.
1212  CmdArgs.push_back("-lSystem");
1213 
1214  // Select the dynamic runtime library and the target specific static library.
1215  if (isTargetIOSBased()) {
1216  // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
1217  // it never went into the SDK.
1218  // Linking against libgcc_s.1 isn't needed for iOS 5.0+
1219  if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator() &&
1220  getTriple().getArch() != llvm::Triple::aarch64)
1221  CmdArgs.push_back("-lgcc_s.1");
1222  }
1223  AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1224 }
1225 
1226 /// Returns the most appropriate macOS target version for the current process.
1227 ///
1228 /// If the macOS SDK version is the same or earlier than the system version,
1229 /// then the SDK version is returned. Otherwise the system version is returned.
1230 static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
1231  unsigned Major, Minor, Micro;
1232  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1233  if (!SystemTriple.isMacOSX())
1234  return MacOSSDKVersion;
1235  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1236  VersionTuple SystemVersion(Major, Minor, Micro);
1237  bool HadExtra;
1238  if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
1239  HadExtra))
1240  return MacOSSDKVersion;
1241  VersionTuple SDKVersion(Major, Minor, Micro);
1242  if (SDKVersion > SystemVersion)
1243  return SystemVersion.getAsString();
1244  return MacOSSDKVersion;
1245 }
1246 
1247 namespace {
1248 
1249 /// The Darwin OS that was selected or inferred from arguments / environment.
1250 struct DarwinPlatform {
1251  enum SourceKind {
1252  /// The OS was specified using the -target argument.
1253  TargetArg,
1254  /// The OS was specified using the -m<os>-version-min argument.
1255  OSVersionArg,
1256  /// The OS was specified using the OS_DEPLOYMENT_TARGET environment.
1257  DeploymentTargetEnv,
1258  /// The OS was inferred from the SDK.
1259  InferredFromSDK,
1260  /// The OS was inferred from the -arch.
1261  InferredFromArch
1262  };
1263 
1266 
1267  DarwinPlatformKind getPlatform() const { return Platform; }
1268 
1269  DarwinEnvironmentKind getEnvironment() const { return Environment; }
1270 
1271  void setEnvironment(DarwinEnvironmentKind Kind) {
1272  Environment = Kind;
1273  InferSimulatorFromArch = false;
1274  }
1275 
1276  StringRef getOSVersion() const {
1277  if (Kind == OSVersionArg)
1278  return Argument->getValue();
1279  return OSVersion;
1280  }
1281 
1282  void setOSVersion(StringRef S) {
1283  assert(Kind == TargetArg && "Unexpected kind!");
1284  OSVersion = S;
1285  }
1286 
1287  bool hasOSVersion() const { return HasOSVersion; }
1288 
1289  /// Returns true if the target OS was explicitly specified.
1290  bool isExplicitlySpecified() const { return Kind <= DeploymentTargetEnv; }
1291 
1292  /// Returns true if the simulator environment can be inferred from the arch.
1293  bool canInferSimulatorFromArch() const { return InferSimulatorFromArch; }
1294 
1295  /// Adds the -m<os>-version-min argument to the compiler invocation.
1296  void addOSVersionMinArgument(DerivedArgList &Args, const OptTable &Opts) {
1297  if (Argument)
1298  return;
1299  assert(Kind != TargetArg && Kind != OSVersionArg && "Invalid kind");
1300  options::ID Opt;
1301  switch (Platform) {
1302  case DarwinPlatformKind::MacOS:
1303  Opt = options::OPT_mmacosx_version_min_EQ;
1304  break;
1305  case DarwinPlatformKind::IPhoneOS:
1306  Opt = options::OPT_miphoneos_version_min_EQ;
1307  break;
1308  case DarwinPlatformKind::TvOS:
1309  Opt = options::OPT_mtvos_version_min_EQ;
1310  break;
1311  case DarwinPlatformKind::WatchOS:
1312  Opt = options::OPT_mwatchos_version_min_EQ;
1313  break;
1314  }
1315  Argument = Args.MakeJoinedArg(nullptr, Opts.getOption(Opt), OSVersion);
1316  Args.append(Argument);
1317  }
1318 
1319  /// Returns the OS version with the argument / environment variable that
1320  /// specified it.
1321  std::string getAsString(DerivedArgList &Args, const OptTable &Opts) {
1322  switch (Kind) {
1323  case TargetArg:
1324  case OSVersionArg:
1325  case InferredFromSDK:
1326  case InferredFromArch:
1327  assert(Argument && "OS version argument not yet inferred");
1328  return Argument->getAsString(Args);
1329  case DeploymentTargetEnv:
1330  return (llvm::Twine(EnvVarName) + "=" + OSVersion).str();
1331  }
1332  llvm_unreachable("Unsupported Darwin Source Kind");
1333  }
1334 
1335  static DarwinPlatform createFromTarget(const llvm::Triple &TT,
1336  StringRef OSVersion, Arg *A) {
1337  DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
1338  A);
1339  switch (TT.getEnvironment()) {
1340  case llvm::Triple::Simulator:
1341  Result.Environment = DarwinEnvironmentKind::Simulator;
1342  break;
1343  default:
1344  break;
1345  }
1346  unsigned Major, Minor, Micro;
1347  TT.getOSVersion(Major, Minor, Micro);
1348  if (Major == 0)
1349  Result.HasOSVersion = false;
1350  return Result;
1351  }
1352  static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
1353  Arg *A) {
1354  return DarwinPlatform(OSVersionArg, Platform, A);
1355  }
1356  static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
1357  StringRef EnvVarName,
1358  StringRef Value) {
1359  DarwinPlatform Result(DeploymentTargetEnv, Platform, Value);
1360  Result.EnvVarName = EnvVarName;
1361  return Result;
1362  }
1363  static DarwinPlatform createFromSDK(DarwinPlatformKind Platform,
1364  StringRef Value,
1365  bool IsSimulator = false) {
1366  DarwinPlatform Result(InferredFromSDK, Platform, Value);
1367  if (IsSimulator)
1368  Result.Environment = DarwinEnvironmentKind::Simulator;
1369  Result.InferSimulatorFromArch = false;
1370  return Result;
1371  }
1372  static DarwinPlatform createFromArch(llvm::Triple::OSType OS,
1373  StringRef Value) {
1374  return DarwinPlatform(InferredFromArch, getPlatformFromOS(OS), Value);
1375  }
1376 
1377  /// Constructs an inferred SDKInfo value based on the version inferred from
1378  /// the SDK path itself. Only works for values that were created by inferring
1379  /// the platform from the SDKPath.
1380  DarwinSDKInfo inferSDKInfo() {
1381  assert(Kind == InferredFromSDK && "can infer SDK info only");
1382  llvm::VersionTuple Version;
1383  bool IsValid = !Version.tryParse(OSVersion);
1384  (void)IsValid;
1385  assert(IsValid && "invalid SDK version");
1386  return DarwinSDKInfo(Version);
1387  }
1388 
1389 private:
1390  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, Arg *Argument)
1391  : Kind(Kind), Platform(Platform), Argument(Argument) {}
1392  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, StringRef Value,
1393  Arg *Argument = nullptr)
1394  : Kind(Kind), Platform(Platform), OSVersion(Value), Argument(Argument) {}
1395 
1396  static DarwinPlatformKind getPlatformFromOS(llvm::Triple::OSType OS) {
1397  switch (OS) {
1398  case llvm::Triple::Darwin:
1399  case llvm::Triple::MacOSX:
1400  return DarwinPlatformKind::MacOS;
1401  case llvm::Triple::IOS:
1402  return DarwinPlatformKind::IPhoneOS;
1403  case llvm::Triple::TvOS:
1404  return DarwinPlatformKind::TvOS;
1405  case llvm::Triple::WatchOS:
1406  return DarwinPlatformKind::WatchOS;
1407  default:
1408  llvm_unreachable("Unable to infer Darwin variant");
1409  }
1410  }
1411 
1412  SourceKind Kind;
1413  DarwinPlatformKind Platform;
1414  DarwinEnvironmentKind Environment = DarwinEnvironmentKind::NativeEnvironment;
1415  std::string OSVersion;
1416  bool HasOSVersion = true, InferSimulatorFromArch = true;
1417  Arg *Argument;
1418  StringRef EnvVarName;
1419 };
1420 
1421 /// Returns the deployment target that's specified using the -m<os>-version-min
1422 /// argument.
1424 getDeploymentTargetFromOSVersionArg(DerivedArgList &Args,
1425  const Driver &TheDriver) {
1426  Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
1427  Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ,
1428  options::OPT_mios_simulator_version_min_EQ);
1429  Arg *TvOSVersion =
1430  Args.getLastArg(options::OPT_mtvos_version_min_EQ,
1431  options::OPT_mtvos_simulator_version_min_EQ);
1432  Arg *WatchOSVersion =
1433  Args.getLastArg(options::OPT_mwatchos_version_min_EQ,
1434  options::OPT_mwatchos_simulator_version_min_EQ);
1435  if (OSXVersion) {
1436  if (iOSVersion || TvOSVersion || WatchOSVersion) {
1437  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1438  << OSXVersion->getAsString(Args)
1439  << (iOSVersion ? iOSVersion
1440  : TvOSVersion ? TvOSVersion : WatchOSVersion)
1441  ->getAsString(Args);
1442  }
1443  return DarwinPlatform::createOSVersionArg(Darwin::MacOS, OSXVersion);
1444  } else if (iOSVersion) {
1445  if (TvOSVersion || WatchOSVersion) {
1446  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1447  << iOSVersion->getAsString(Args)
1448  << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
1449  }
1450  return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
1451  } else if (TvOSVersion) {
1452  if (WatchOSVersion) {
1453  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1454  << TvOSVersion->getAsString(Args)
1455  << WatchOSVersion->getAsString(Args);
1456  }
1457  return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
1458  } else if (WatchOSVersion)
1459  return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
1460  return None;
1461 }
1462 
1463 /// Returns the deployment target that's specified using the
1464 /// OS_DEPLOYMENT_TARGET environment variable.
1466 getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
1467  const llvm::Triple &Triple) {
1468  std::string Targets[Darwin::LastDarwinPlatform + 1];
1469  const char *EnvVars[] = {
1470  "MACOSX_DEPLOYMENT_TARGET",
1471  "IPHONEOS_DEPLOYMENT_TARGET",
1472  "TVOS_DEPLOYMENT_TARGET",
1473  "WATCHOS_DEPLOYMENT_TARGET",
1474  };
1475  static_assert(llvm::array_lengthof(EnvVars) == Darwin::LastDarwinPlatform + 1,
1476  "Missing platform");
1477  for (const auto &I : llvm::enumerate(llvm::makeArrayRef(EnvVars))) {
1478  if (char *Env = ::getenv(I.value()))
1479  Targets[I.index()] = Env;
1480  }
1481 
1482  // Allow conflicts among OSX and iOS for historical reasons, but choose the
1483  // default platform.
1484  if (!Targets[Darwin::MacOS].empty() &&
1485  (!Targets[Darwin::IPhoneOS].empty() ||
1486  !Targets[Darwin::WatchOS].empty() || !Targets[Darwin::TvOS].empty())) {
1487  if (Triple.getArch() == llvm::Triple::arm ||
1488  Triple.getArch() == llvm::Triple::aarch64 ||
1489  Triple.getArch() == llvm::Triple::thumb)
1490  Targets[Darwin::MacOS] = "";
1491  else
1492  Targets[Darwin::IPhoneOS] = Targets[Darwin::WatchOS] =
1493  Targets[Darwin::TvOS] = "";
1494  } else {
1495  // Don't allow conflicts in any other platform.
1496  int FirstTarget = llvm::array_lengthof(Targets);
1497  for (int I = 0; I != llvm::array_lengthof(Targets); ++I) {
1498  if (Targets[I].empty())
1499  continue;
1500  if (FirstTarget == llvm::array_lengthof(Targets))
1501  FirstTarget = I;
1502  else
1503  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1504  << Targets[FirstTarget] << Targets[I];
1505  }
1506  }
1507 
1508  for (const auto &Target : llvm::enumerate(llvm::makeArrayRef(Targets))) {
1509  if (!Target.value().empty())
1510  return DarwinPlatform::createDeploymentTargetEnv(
1511  (Darwin::DarwinPlatformKind)Target.index(), EnvVars[Target.index()],
1512  Target.value());
1513  }
1514  return None;
1515 }
1516 
1517 /// Tries to infer the deployment target from the SDK specified by -isysroot
1518 /// (or SDKROOT). Uses the version specified in the SDKSettings.json file if
1519 /// it's available.
1521 inferDeploymentTargetFromSDK(DerivedArgList &Args,
1523  const Arg *A = Args.getLastArg(options::OPT_isysroot);
1524  if (!A)
1525  return None;
1526  StringRef isysroot = A->getValue();
1527  StringRef SDK = Darwin::getSDKName(isysroot);
1528  if (!SDK.size())
1529  return None;
1530 
1531  std::string Version;
1532  if (SDKInfo) {
1533  // Get the version from the SDKSettings.json if it's available.
1534  Version = SDKInfo->getVersion().getAsString();
1535  } else {
1536  // Slice the version number out.
1537  // Version number is between the first and the last number.
1538  size_t StartVer = SDK.find_first_of("0123456789");
1539  size_t EndVer = SDK.find_last_of("0123456789");
1540  if (StartVer != StringRef::npos && EndVer > StartVer)
1541  Version = SDK.slice(StartVer, EndVer + 1);
1542  }
1543  if (Version.empty())
1544  return None;
1545 
1546  if (SDK.startswith("iPhoneOS") || SDK.startswith("iPhoneSimulator"))
1547  return DarwinPlatform::createFromSDK(
1548  Darwin::IPhoneOS, Version,
1549  /*IsSimulator=*/SDK.startswith("iPhoneSimulator"));
1550  else if (SDK.startswith("MacOSX"))
1551  return DarwinPlatform::createFromSDK(Darwin::MacOS,
1552  getSystemOrSDKMacOSVersion(Version));
1553  else if (SDK.startswith("WatchOS") || SDK.startswith("WatchSimulator"))
1554  return DarwinPlatform::createFromSDK(
1555  Darwin::WatchOS, Version,
1556  /*IsSimulator=*/SDK.startswith("WatchSimulator"));
1557  else if (SDK.startswith("AppleTVOS") || SDK.startswith("AppleTVSimulator"))
1558  return DarwinPlatform::createFromSDK(
1559  Darwin::TvOS, Version,
1560  /*IsSimulator=*/SDK.startswith("AppleTVSimulator"));
1561  return None;
1562 }
1563 
1564 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
1565  const Driver &TheDriver) {
1566  unsigned Major, Minor, Micro;
1567  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1568  switch (OS) {
1569  case llvm::Triple::Darwin:
1570  case llvm::Triple::MacOSX:
1571  // If there is no version specified on triple, and both host and target are
1572  // macos, use the host triple to infer OS version.
1573  if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
1574  !Triple.getOSMajorVersion())
1575  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1576  else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
1577  TheDriver.Diag(diag::err_drv_invalid_darwin_version)
1578  << Triple.getOSName();
1579  break;
1580  case llvm::Triple::IOS:
1581  Triple.getiOSVersion(Major, Minor, Micro);
1582  break;
1583  case llvm::Triple::TvOS:
1584  Triple.getOSVersion(Major, Minor, Micro);
1585  break;
1586  case llvm::Triple::WatchOS:
1587  Triple.getWatchOSVersion(Major, Minor, Micro);
1588  break;
1589  default:
1590  llvm_unreachable("Unexpected OS type");
1591  break;
1592  }
1593 
1594  std::string OSVersion;
1595  llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
1596  return OSVersion;
1597 }
1598 
1599 /// Tries to infer the target OS from the -arch.
1601 inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
1602  const llvm::Triple &Triple,
1603  const Driver &TheDriver) {
1604  llvm::Triple::OSType OSTy = llvm::Triple::UnknownOS;
1605 
1606  StringRef MachOArchName = Toolchain.getMachOArchName(Args);
1607  if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
1608  MachOArchName == "arm64")
1609  OSTy = llvm::Triple::IOS;
1610  else if (MachOArchName == "armv7k")
1611  OSTy = llvm::Triple::WatchOS;
1612  else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
1613  MachOArchName != "armv7em")
1614  OSTy = llvm::Triple::MacOSX;
1615 
1616  if (OSTy == llvm::Triple::UnknownOS)
1617  return None;
1618  return DarwinPlatform::createFromArch(OSTy,
1619  getOSVersion(OSTy, Triple, TheDriver));
1620 }
1621 
1622 /// Returns the deployment target that's specified using the -target option.
1623 Optional<DarwinPlatform> getDeploymentTargetFromTargetArg(
1624  DerivedArgList &Args, const llvm::Triple &Triple, const Driver &TheDriver) {
1625  if (!Args.hasArg(options::OPT_target))
1626  return None;
1627  if (Triple.getOS() == llvm::Triple::Darwin ||
1628  Triple.getOS() == llvm::Triple::UnknownOS)
1629  return None;
1630  std::string OSVersion = getOSVersion(Triple.getOS(), Triple, TheDriver);
1631  return DarwinPlatform::createFromTarget(Triple, OSVersion,
1632  Args.getLastArg(options::OPT_target));
1633 }
1634 
1635 Optional<DarwinSDKInfo> parseSDKSettings(llvm::vfs::FileSystem &VFS,
1636  const ArgList &Args,
1637  const Driver &TheDriver) {
1638  const Arg *A = Args.getLastArg(options::OPT_isysroot);
1639  if (!A)
1640  return None;
1641  StringRef isysroot = A->getValue();
1642  auto SDKInfoOrErr = driver::parseDarwinSDKInfo(VFS, isysroot);
1643  if (!SDKInfoOrErr) {
1644  llvm::consumeError(SDKInfoOrErr.takeError());
1645  TheDriver.Diag(diag::warn_drv_darwin_sdk_invalid_settings);
1646  return None;
1647  }
1648  return *SDKInfoOrErr;
1649 }
1650 
1651 } // namespace
1652 
1653 void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
1654  const OptTable &Opts = getDriver().getOpts();
1655 
1656  // Support allowing the SDKROOT environment variable used by xcrun and other
1657  // Xcode tools to define the default sysroot, by making it the default for
1658  // isysroot.
1659  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1660  // Warn if the path does not exist.
1661  if (!getVFS().exists(A->getValue()))
1662  getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
1663  } else {
1664  if (char *env = ::getenv("SDKROOT")) {
1665  // We only use this value as the default if it is an absolute path,
1666  // exists, and it is not the root path.
1667  if (llvm::sys::path::is_absolute(env) && getVFS().exists(env) &&
1668  StringRef(env) != "/") {
1669  Args.append(Args.MakeSeparateArg(
1670  nullptr, Opts.getOption(options::OPT_isysroot), env));
1671  }
1672  }
1673  }
1674 
1675  // Read the SDKSettings.json file for more information, like the SDK version
1676  // that we can pass down to the compiler.
1677  SDKInfo = parseSDKSettings(getVFS(), Args, getDriver());
1678 
1679  // The OS and the version can be specified using the -target argument.
1680  Optional<DarwinPlatform> OSTarget =
1681  getDeploymentTargetFromTargetArg(Args, getTriple(), getDriver());
1682  if (OSTarget) {
1683  Optional<DarwinPlatform> OSVersionArgTarget =
1684  getDeploymentTargetFromOSVersionArg(Args, getDriver());
1685  if (OSVersionArgTarget) {
1686  unsigned TargetMajor, TargetMinor, TargetMicro;
1687  bool TargetExtra;
1688  unsigned ArgMajor, ArgMinor, ArgMicro;
1689  bool ArgExtra;
1690  if (OSTarget->getPlatform() != OSVersionArgTarget->getPlatform() ||
1691  (Driver::GetReleaseVersion(OSTarget->getOSVersion(), TargetMajor,
1692  TargetMinor, TargetMicro, TargetExtra) &&
1693  Driver::GetReleaseVersion(OSVersionArgTarget->getOSVersion(),
1694  ArgMajor, ArgMinor, ArgMicro, ArgExtra) &&
1695  (VersionTuple(TargetMajor, TargetMinor, TargetMicro) !=
1696  VersionTuple(ArgMajor, ArgMinor, ArgMicro) ||
1697  TargetExtra != ArgExtra))) {
1698  // Select the OS version from the -m<os>-version-min argument when
1699  // the -target does not include an OS version.
1700  if (OSTarget->getPlatform() == OSVersionArgTarget->getPlatform() &&
1701  !OSTarget->hasOSVersion()) {
1702  OSTarget->setOSVersion(OSVersionArgTarget->getOSVersion());
1703  } else {
1704  // Warn about -m<os>-version-min that doesn't match the OS version
1705  // that's specified in the target.
1706  std::string OSVersionArg =
1707  OSVersionArgTarget->getAsString(Args, Opts);
1708  std::string TargetArg = OSTarget->getAsString(Args, Opts);
1709  getDriver().Diag(clang::diag::warn_drv_overriding_flag_option)
1710  << OSVersionArg << TargetArg;
1711  }
1712  }
1713  }
1714  } else {
1715  // The OS target can be specified using the -m<os>version-min argument.
1716  OSTarget = getDeploymentTargetFromOSVersionArg(Args, getDriver());
1717  // If no deployment target was specified on the command line, check for
1718  // environment defines.
1719  if (!OSTarget) {
1720  OSTarget =
1721  getDeploymentTargetFromEnvironmentVariables(getDriver(), getTriple());
1722  if (OSTarget) {
1723  // Don't infer simulator from the arch when the SDK is also specified.
1724  Optional<DarwinPlatform> SDKTarget =
1725  inferDeploymentTargetFromSDK(Args, SDKInfo);
1726  if (SDKTarget)
1727  OSTarget->setEnvironment(SDKTarget->getEnvironment());
1728  }
1729  }
1730  // If there is no command-line argument to specify the Target version and
1731  // no environment variable defined, see if we can set the default based
1732  // on -isysroot using SDKSettings.json if it exists.
1733  if (!OSTarget) {
1734  OSTarget = inferDeploymentTargetFromSDK(Args, SDKInfo);
1735  /// If the target was successfully constructed from the SDK path, try to
1736  /// infer the SDK info if the SDK doesn't have it.
1737  if (OSTarget && !SDKInfo)
1738  SDKInfo = OSTarget->inferSDKInfo();
1739  }
1740  // If no OS targets have been specified, try to guess platform from -target
1741  // or arch name and compute the version from the triple.
1742  if (!OSTarget)
1743  OSTarget =
1744  inferDeploymentTargetFromArch(Args, *this, getTriple(), getDriver());
1745  }
1746 
1747  assert(OSTarget && "Unable to infer Darwin variant");
1748  OSTarget->addOSVersionMinArgument(Args, Opts);
1749  DarwinPlatformKind Platform = OSTarget->getPlatform();
1750 
1751  unsigned Major, Minor, Micro;
1752  bool HadExtra;
1753  // Set the tool chain target information.
1754  if (Platform == MacOS) {
1755  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1756  Micro, HadExtra) ||
1757  HadExtra || Major != 10 || Minor >= 100 || Micro >= 100)
1758  getDriver().Diag(diag::err_drv_invalid_version_number)
1759  << OSTarget->getAsString(Args, Opts);
1760  } else if (Platform == IPhoneOS) {
1761  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1762  Micro, HadExtra) ||
1763  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1764  getDriver().Diag(diag::err_drv_invalid_version_number)
1765  << OSTarget->getAsString(Args, Opts);
1766  ;
1767  // For 32-bit targets, the deployment target for iOS has to be earlier than
1768  // iOS 11.
1769  if (getTriple().isArch32Bit() && Major >= 11) {
1770  // If the deployment target is explicitly specified, print a diagnostic.
1771  if (OSTarget->isExplicitlySpecified()) {
1772  getDriver().Diag(diag::warn_invalid_ios_deployment_target)
1773  << OSTarget->getAsString(Args, Opts);
1774  // Otherwise, set it to 10.99.99.
1775  } else {
1776  Major = 10;
1777  Minor = 99;
1778  Micro = 99;
1779  }
1780  }
1781  } else if (Platform == TvOS) {
1782  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1783  Micro, HadExtra) ||
1784  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1785  getDriver().Diag(diag::err_drv_invalid_version_number)
1786  << OSTarget->getAsString(Args, Opts);
1787  } else if (Platform == WatchOS) {
1788  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1789  Micro, HadExtra) ||
1790  HadExtra || Major >= 10 || Minor >= 100 || Micro >= 100)
1791  getDriver().Diag(diag::err_drv_invalid_version_number)
1792  << OSTarget->getAsString(Args, Opts);
1793  } else
1794  llvm_unreachable("unknown kind of Darwin platform");
1795 
1796  DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
1797  // Recognize iOS targets with an x86 architecture as the iOS simulator.
1798  if (Environment == NativeEnvironment && Platform != MacOS &&
1799  OSTarget->canInferSimulatorFromArch() &&
1800  (getTriple().getArch() == llvm::Triple::x86 ||
1801  getTriple().getArch() == llvm::Triple::x86_64))
1802  Environment = Simulator;
1803 
1804  setTarget(Platform, Environment, Major, Minor, Micro);
1805 
1806  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1807  StringRef SDK = getSDKName(A->getValue());
1808  if (SDK.size() > 0) {
1809  size_t StartVer = SDK.find_first_of("0123456789");
1810  StringRef SDKName = SDK.slice(0, StartVer);
1811  if (!SDKName.startswith(getPlatformFamily()))
1812  getDriver().Diag(diag::warn_incompatible_sysroot)
1813  << SDKName << getPlatformFamily();
1814  }
1815  }
1816 }
1817 
1818 // Returns the effective header sysroot path to use. This comes either from
1819 // -isysroot or --sysroot.
1820 llvm::StringRef DarwinClang::GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const {
1821  if(DriverArgs.hasArg(options::OPT_isysroot))
1822  return DriverArgs.getLastArgValue(options::OPT_isysroot);
1823  if (!getDriver().SysRoot.empty())
1824  return getDriver().SysRoot;
1825  return "/";
1826 }
1827 
1828 void DarwinClang::AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
1829  llvm::opt::ArgStringList &CC1Args) const {
1830  const Driver &D = getDriver();
1831 
1832  llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
1833 
1834  bool NoStdInc = DriverArgs.hasArg(options::OPT_nostdinc);
1835  bool NoStdlibInc = DriverArgs.hasArg(options::OPT_nostdlibinc);
1836  bool NoBuiltinInc = DriverArgs.hasArg(options::OPT_nobuiltininc);
1837 
1838  // Add <sysroot>/usr/local/include
1839  if (!NoStdInc && !NoStdlibInc) {
1840  SmallString<128> P(Sysroot);
1841  llvm::sys::path::append(P, "usr", "local", "include");
1842  addSystemInclude(DriverArgs, CC1Args, P);
1843  }
1844 
1845  // Add the Clang builtin headers (<resource>/include)
1846  if (!NoStdInc && !NoBuiltinInc) {
1848  llvm::sys::path::append(P, "include");
1849  addSystemInclude(DriverArgs, CC1Args, P);
1850  }
1851 
1852  if (NoStdInc || NoStdlibInc)
1853  return;
1854 
1855  // Check for configure-time C include directories.
1856  llvm::StringRef CIncludeDirs(C_INCLUDE_DIRS);
1857  if (!CIncludeDirs.empty()) {
1859  CIncludeDirs.split(dirs, ":");
1860  for (llvm::StringRef dir : dirs) {
1861  llvm::StringRef Prefix =
1862  llvm::sys::path::is_absolute(dir) ? llvm::StringRef(Sysroot) : "";
1863  addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
1864  }
1865  } else {
1866  // Otherwise, add <sysroot>/usr/include.
1867  SmallString<128> P(Sysroot);
1868  llvm::sys::path::append(P, "usr", "include");
1869  addExternCSystemInclude(DriverArgs, CC1Args, P.str());
1870  }
1871 }
1872 
1873 bool DarwinClang::AddGnuCPlusPlusIncludePaths(const llvm::opt::ArgList &DriverArgs,
1874  llvm::opt::ArgStringList &CC1Args,
1876  llvm::StringRef Version,
1877  llvm::StringRef ArchDir,
1878  llvm::StringRef BitDir) const {
1879  llvm::sys::path::append(Base, Version);
1880 
1881  // Add the base dir
1882  addSystemInclude(DriverArgs, CC1Args, Base);
1883 
1884  // Add the multilib dirs
1885  {
1886  llvm::SmallString<128> P = Base;
1887  if (!ArchDir.empty())
1888  llvm::sys::path::append(P, ArchDir);
1889  if (!BitDir.empty())
1890  llvm::sys::path::append(P, BitDir);
1891  addSystemInclude(DriverArgs, CC1Args, P);
1892  }
1893 
1894  // Add the backward dir
1895  {
1896  llvm::SmallString<128> P = Base;
1897  llvm::sys::path::append(P, "backward");
1898  addSystemInclude(DriverArgs, CC1Args, P);
1899  }
1900 
1901  return getVFS().exists(Base);
1902 }
1903 
1905  const llvm::opt::ArgList &DriverArgs,
1906  llvm::opt::ArgStringList &CC1Args) const {
1907  // The implementation from a base class will pass through the -stdlib to
1908  // CC1Args.
1909  // FIXME: this should not be necessary, remove usages in the frontend
1910  // (e.g. HeaderSearchOptions::UseLibcxx) and don't pipe -stdlib.
1911  // Also check whether this is used for setting library search paths.
1912  ToolChain::AddClangCXXStdlibIncludeArgs(DriverArgs, CC1Args);
1913 
1914  if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
1915  DriverArgs.hasArg(options::OPT_nostdincxx))
1916  return;
1917 
1918  llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
1919 
1920  switch (GetCXXStdlibType(DriverArgs)) {
1921  case ToolChain::CST_Libcxx: {
1922  // On Darwin, libc++ is installed alongside the compiler in
1923  // include/c++/v1, so get from '<install>/bin' to '<install>/include/c++/v1'.
1924  {
1925  llvm::SmallString<128> P = llvm::StringRef(getDriver().getInstalledDir());
1926  // Note that P can be relative, so we have to '..' and not parent_path.
1927  llvm::sys::path::append(P, "..", "include", "c++", "v1");
1928  addSystemInclude(DriverArgs, CC1Args, P);
1929  }
1930  // Also add <sysroot>/usr/include/c++/v1 unless -nostdinc is used,
1931  // to match the legacy behavior in CC1.
1932  if (!DriverArgs.hasArg(options::OPT_nostdinc)) {
1933  llvm::SmallString<128> P = Sysroot;
1934  llvm::sys::path::append(P, "usr", "include", "c++", "v1");
1935  addSystemInclude(DriverArgs, CC1Args, P);
1936  }
1937  break;
1938  }
1939 
1941  llvm::SmallString<128> UsrIncludeCxx = Sysroot;
1942  llvm::sys::path::append(UsrIncludeCxx, "usr", "include", "c++");
1943 
1944  llvm::Triple::ArchType arch = getTriple().getArch();
1945  bool IsBaseFound = true;
1946  switch (arch) {
1947  default: break;
1948 
1949  case llvm::Triple::ppc:
1950  case llvm::Triple::ppc64:
1951  IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1952  "4.2.1",
1953  "powerpc-apple-darwin10",
1954  arch == llvm::Triple::ppc64 ? "ppc64" : "");
1955  IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1956  "4.0.0", "powerpc-apple-darwin10",
1957  arch == llvm::Triple::ppc64 ? "ppc64" : "");
1958  break;
1959 
1960  case llvm::Triple::x86:
1961  case llvm::Triple::x86_64:
1962  IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1963  "4.2.1",
1964  "i686-apple-darwin10",
1965  arch == llvm::Triple::x86_64 ? "x86_64" : "");
1966  IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1967  "4.0.0", "i686-apple-darwin8",
1968  "");
1969  break;
1970 
1971  case llvm::Triple::arm:
1972  case llvm::Triple::thumb:
1973  IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1974  "4.2.1",
1975  "arm-apple-darwin10",
1976  "v7");
1977  IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1978  "4.2.1",
1979  "arm-apple-darwin10",
1980  "v6");
1981  break;
1982 
1983  case llvm::Triple::aarch64:
1984  IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1985  "4.2.1",
1986  "arm64-apple-darwin10",
1987  "");
1988  break;
1989  }
1990 
1991  if (!IsBaseFound) {
1992  getDriver().Diag(diag::warn_drv_libstdcxx_not_found);
1993  }
1994 
1995  break;
1996  }
1997 }
1998 void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
1999  ArgStringList &CmdArgs) const {
2001 
2002  switch (Type) {
2003  case ToolChain::CST_Libcxx:
2004  CmdArgs.push_back("-lc++");
2005  break;
2006 
2008  // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
2009  // it was previously found in the gcc lib dir. However, for all the Darwin
2010  // platforms we care about it was -lstdc++.6, so we search for that
2011  // explicitly if we can't see an obvious -lstdc++ candidate.
2012 
2013  // Check in the sysroot first.
2014  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
2015  SmallString<128> P(A->getValue());
2016  llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
2017 
2018  if (!getVFS().exists(P)) {
2019  llvm::sys::path::remove_filename(P);
2020  llvm::sys::path::append(P, "libstdc++.6.dylib");
2021  if (getVFS().exists(P)) {
2022  CmdArgs.push_back(Args.MakeArgString(P));
2023  return;
2024  }
2025  }
2026  }
2027 
2028  // Otherwise, look in the root.
2029  // FIXME: This should be removed someday when we don't have to care about
2030  // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
2031  if (!getVFS().exists("/usr/lib/libstdc++.dylib") &&
2032  getVFS().exists("/usr/lib/libstdc++.6.dylib")) {
2033  CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
2034  return;
2035  }
2036 
2037  // Otherwise, let the linker search.
2038  CmdArgs.push_back("-lstdc++");
2039  break;
2040  }
2041 }
2042 
2043 void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
2044  ArgStringList &CmdArgs) const {
2045  // For Darwin platforms, use the compiler-rt-based support library
2046  // instead of the gcc-provided one (which is also incidentally
2047  // only present in the gcc lib dir, which makes it hard to find).
2048 
2049  SmallString<128> P(getDriver().ResourceDir);
2050  llvm::sys::path::append(P, "lib", "darwin");
2051 
2052  // Use the newer cc_kext for iOS ARM after 6.0.
2053  if (isTargetWatchOS()) {
2054  llvm::sys::path::append(P, "libclang_rt.cc_kext_watchos.a");
2055  } else if (isTargetTvOS()) {
2056  llvm::sys::path::append(P, "libclang_rt.cc_kext_tvos.a");
2057  } else if (isTargetIPhoneOS()) {
2058  llvm::sys::path::append(P, "libclang_rt.cc_kext_ios.a");
2059  } else {
2060  llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
2061  }
2062 
2063  // For now, allow missing resource libraries to support developers who may
2064  // not have compiler-rt checked out or integrated into their build.
2065  if (getVFS().exists(P))
2066  CmdArgs.push_back(Args.MakeArgString(P));
2067 }
2068 
2069 DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
2070  StringRef BoundArch,
2071  Action::OffloadKind) const {
2072  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2073  const OptTable &Opts = getDriver().getOpts();
2074 
2075  // FIXME: We really want to get out of the tool chain level argument
2076  // translation business, as it makes the driver functionality much
2077  // more opaque. For now, we follow gcc closely solely for the
2078  // purpose of easily achieving feature parity & testability. Once we
2079  // have something that works, we should reevaluate each translation
2080  // and try to push it down into tool specific logic.
2081 
2082  for (Arg *A : Args) {
2083  if (A->getOption().matches(options::OPT_Xarch__)) {
2084  // Skip this argument unless the architecture matches either the toolchain
2085  // triple arch, or the arch being bound.
2086  llvm::Triple::ArchType XarchArch =
2088  if (!(XarchArch == getArch() ||
2089  (!BoundArch.empty() &&
2090  XarchArch ==
2092  continue;
2093 
2094  Arg *OriginalArg = A;
2095  unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
2096  unsigned Prev = Index;
2097  std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
2098 
2099  // If the argument parsing failed or more than one argument was
2100  // consumed, the -Xarch_ argument's parameter tried to consume
2101  // extra arguments. Emit an error and ignore.
2102  //
2103  // We also want to disallow any options which would alter the
2104  // driver behavior; that isn't going to work in our model. We
2105  // use isDriverOption() as an approximation, although things
2106  // like -O4 are going to slip through.
2107  if (!XarchArg || Index > Prev + 1) {
2108  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
2109  << A->getAsString(Args);
2110  continue;
2111  } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
2112  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
2113  << A->getAsString(Args);
2114  continue;
2115  }
2116 
2117  XarchArg->setBaseArg(A);
2118 
2119  A = XarchArg.release();
2120  DAL->AddSynthesizedArg(A);
2121 
2122  // Linker input arguments require custom handling. The problem is that we
2123  // have already constructed the phase actions, so we can not treat them as
2124  // "input arguments".
2125  if (A->getOption().hasFlag(options::LinkerInput)) {
2126  // Convert the argument into individual Zlinker_input_args.
2127  for (const char *Value : A->getValues()) {
2128  DAL->AddSeparateArg(
2129  OriginalArg, Opts.getOption(options::OPT_Zlinker_input), Value);
2130  }
2131  continue;
2132  }
2133  }
2134 
2135  // Sob. These is strictly gcc compatible for the time being. Apple
2136  // gcc translates options twice, which means that self-expanding
2137  // options add duplicates.
2138  switch ((options::ID)A->getOption().getID()) {
2139  default:
2140  DAL->append(A);
2141  break;
2142 
2143  case options::OPT_mkernel:
2144  case options::OPT_fapple_kext:
2145  DAL->append(A);
2146  DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
2147  break;
2148 
2149  case options::OPT_dependency_file:
2150  DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), A->getValue());
2151  break;
2152 
2153  case options::OPT_gfull:
2154  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
2155  DAL->AddFlagArg(
2156  A, Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
2157  break;
2158 
2159  case options::OPT_gused:
2160  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
2161  DAL->AddFlagArg(
2162  A, Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
2163  break;
2164 
2165  case options::OPT_shared:
2166  DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
2167  break;
2168 
2169  case options::OPT_fconstant_cfstrings:
2170  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
2171  break;
2172 
2173  case options::OPT_fno_constant_cfstrings:
2174  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
2175  break;
2176 
2177  case options::OPT_Wnonportable_cfstrings:
2178  DAL->AddFlagArg(A,
2179  Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
2180  break;
2181 
2182  case options::OPT_Wno_nonportable_cfstrings:
2183  DAL->AddFlagArg(
2184  A, Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
2185  break;
2186 
2187  case options::OPT_fpascal_strings:
2188  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
2189  break;
2190 
2191  case options::OPT_fno_pascal_strings:
2192  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
2193  break;
2194  }
2195  }
2196 
2197  if (getTriple().getArch() == llvm::Triple::x86 ||
2198  getTriple().getArch() == llvm::Triple::x86_64)
2199  if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
2200  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
2201  "core2");
2202 
2203  // Add the arch options based on the particular spelling of -arch, to match
2204  // how the driver driver works.
2205  if (!BoundArch.empty()) {
2206  StringRef Name = BoundArch;
2207  const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
2208  const Option MArch = Opts.getOption(clang::driver::options::OPT_march_EQ);
2209 
2210  // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
2211  // which defines the list of which architectures we accept.
2212  if (Name == "ppc")
2213  ;
2214  else if (Name == "ppc601")
2215  DAL->AddJoinedArg(nullptr, MCpu, "601");
2216  else if (Name == "ppc603")
2217  DAL->AddJoinedArg(nullptr, MCpu, "603");
2218  else if (Name == "ppc604")
2219  DAL->AddJoinedArg(nullptr, MCpu, "604");
2220  else if (Name == "ppc604e")
2221  DAL->AddJoinedArg(nullptr, MCpu, "604e");
2222  else if (Name == "ppc750")
2223  DAL->AddJoinedArg(nullptr, MCpu, "750");
2224  else if (Name == "ppc7400")
2225  DAL->AddJoinedArg(nullptr, MCpu, "7400");
2226  else if (Name == "ppc7450")
2227  DAL->AddJoinedArg(nullptr, MCpu, "7450");
2228  else if (Name == "ppc970")
2229  DAL->AddJoinedArg(nullptr, MCpu, "970");
2230 
2231  else if (Name == "ppc64" || Name == "ppc64le")
2232  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2233 
2234  else if (Name == "i386")
2235  ;
2236  else if (Name == "i486")
2237  DAL->AddJoinedArg(nullptr, MArch, "i486");
2238  else if (Name == "i586")
2239  DAL->AddJoinedArg(nullptr, MArch, "i586");
2240  else if (Name == "i686")
2241  DAL->AddJoinedArg(nullptr, MArch, "i686");
2242  else if (Name == "pentium")
2243  DAL->AddJoinedArg(nullptr, MArch, "pentium");
2244  else if (Name == "pentium2")
2245  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2246  else if (Name == "pentpro")
2247  DAL->AddJoinedArg(nullptr, MArch, "pentiumpro");
2248  else if (Name == "pentIIm3")
2249  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2250 
2251  else if (Name == "x86_64" || Name == "x86_64h")
2252  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2253 
2254  else if (Name == "arm")
2255  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2256  else if (Name == "armv4t")
2257  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2258  else if (Name == "armv5")
2259  DAL->AddJoinedArg(nullptr, MArch, "armv5tej");
2260  else if (Name == "xscale")
2261  DAL->AddJoinedArg(nullptr, MArch, "xscale");
2262  else if (Name == "armv6")
2263  DAL->AddJoinedArg(nullptr, MArch, "armv6k");
2264  else if (Name == "armv6m")
2265  DAL->AddJoinedArg(nullptr, MArch, "armv6m");
2266  else if (Name == "armv7")
2267  DAL->AddJoinedArg(nullptr, MArch, "armv7a");
2268  else if (Name == "armv7em")
2269  DAL->AddJoinedArg(nullptr, MArch, "armv7em");
2270  else if (Name == "armv7k")
2271  DAL->AddJoinedArg(nullptr, MArch, "armv7k");
2272  else if (Name == "armv7m")
2273  DAL->AddJoinedArg(nullptr, MArch, "armv7m");
2274  else if (Name == "armv7s")
2275  DAL->AddJoinedArg(nullptr, MArch, "armv7s");
2276  }
2277 
2278  return DAL;
2279 }
2280 
2281 void MachO::AddLinkRuntimeLibArgs(const ArgList &Args,
2282  ArgStringList &CmdArgs,
2283  bool ForceLinkBuiltinRT) const {
2284  // Embedded targets are simple at the moment, not supporting sanitizers and
2285  // with different libraries for each member of the product { static, PIC } x
2286  // { hard-float, soft-float }
2287  llvm::SmallString<32> CompilerRT = StringRef("");
2288  CompilerRT +=
2290  ? "hard"
2291  : "soft";
2292  CompilerRT += Args.hasArg(options::OPT_fPIC) ? "_pic" : "_static";
2293 
2294  AddLinkRuntimeLib(Args, CmdArgs, CompilerRT, RLO_IsEmbedded);
2295 }
2296 
2298  llvm::Triple::OSType OS;
2299 
2300  switch (TargetPlatform) {
2301  case MacOS: // Earlier than 10.13.
2302  OS = llvm::Triple::MacOSX;
2303  break;
2304  case IPhoneOS:
2305  OS = llvm::Triple::IOS;
2306  break;
2307  case TvOS: // Earlier than 11.0.
2308  OS = llvm::Triple::TvOS;
2309  break;
2310  case WatchOS: // Earlier than 4.0.
2311  OS = llvm::Triple::WatchOS;
2312  break;
2313  }
2314 
2316 }
2317 
2318 void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
2319  llvm::opt::ArgStringList &CC1Args,
2320  Action::OffloadKind DeviceOffloadKind) const {
2321  // Pass "-faligned-alloc-unavailable" only when the user hasn't manually
2322  // enabled or disabled aligned allocations.
2323  if (!DriverArgs.hasArgNoClaim(options::OPT_faligned_allocation,
2324  options::OPT_fno_aligned_allocation) &&
2326  CC1Args.push_back("-faligned-alloc-unavailable");
2327 
2328  if (SDKInfo) {
2329  /// Pass the SDK version to the compiler when the SDK information is
2330  /// available.
2331  std::string Arg;
2332  llvm::raw_string_ostream OS(Arg);
2333  OS << "-target-sdk-version=" << SDKInfo->getVersion();
2334  CC1Args.push_back(DriverArgs.MakeArgString(OS.str()));
2335  }
2336 }
2337 
2338 DerivedArgList *
2339 Darwin::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
2340  Action::OffloadKind DeviceOffloadKind) const {
2341  // First get the generic Apple args, before moving onto Darwin-specific ones.
2342  DerivedArgList *DAL =
2343  MachO::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
2344  const OptTable &Opts = getDriver().getOpts();
2345 
2346  // If no architecture is bound, none of the translations here are relevant.
2347  if (BoundArch.empty())
2348  return DAL;
2349 
2350  // Add an explicit version min argument for the deployment target. We do this
2351  // after argument translation because -Xarch_ arguments may add a version min
2352  // argument.
2353  AddDeploymentTarget(*DAL);
2354 
2355  // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
2356  // FIXME: It would be far better to avoid inserting those -static arguments,
2357  // but we can't check the deployment target in the translation code until
2358  // it is set here.
2359  if (isTargetWatchOSBased() ||
2360  (isTargetIOSBased() && !isIPhoneOSVersionLT(6, 0))) {
2361  for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
2362  Arg *A = *it;
2363  ++it;
2364  if (A->getOption().getID() != options::OPT_mkernel &&
2365  A->getOption().getID() != options::OPT_fapple_kext)
2366  continue;
2367  assert(it != ie && "unexpected argument translation");
2368  A = *it;
2369  assert(A->getOption().getID() == options::OPT_static &&
2370  "missing expected -static argument");
2371  *it = nullptr;
2372  ++it;
2373  }
2374  }
2375 
2376  if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
2378  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
2379  "libc++");
2380 
2381  // Validate the C++ standard library choice.
2383  if (Type == ToolChain::CST_Libcxx) {
2384  // Check whether the target provides libc++.
2385  StringRef where;
2386 
2387  // Complain about targeting iOS < 5.0 in any way.
2388  if (isTargetIOSBased() && isIPhoneOSVersionLT(5, 0))
2389  where = "iOS 5.0";
2390 
2391  if (where != StringRef()) {
2392  getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) << where;
2393  }
2394  }
2395 
2396  auto Arch = tools::darwin::getArchTypeForMachOArchName(BoundArch);
2397  if ((Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)) {
2398  if (Args.hasFlag(options::OPT_fomit_frame_pointer,
2399  options::OPT_fno_omit_frame_pointer, false))
2400  getDriver().Diag(clang::diag::warn_drv_unsupported_opt_for_target)
2401  << "-fomit-frame-pointer" << BoundArch;
2402  }
2403 
2404  return DAL;
2405 }
2406 
2407 bool MachO::IsUnwindTablesDefault(const ArgList &Args) const {
2408  // Unwind tables are not emitted if -fno-exceptions is supplied (except when
2409  // targeting x86_64).
2410  return getArch() == llvm::Triple::x86_64 ||
2411  (GetExceptionModel(Args) != llvm::ExceptionHandling::SjLj &&
2412  Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
2413  true));
2414 }
2415 
2417  if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
2418  return S[0] != '\0';
2419  return false;
2420 }
2421 
2422 llvm::ExceptionHandling Darwin::GetExceptionModel(const ArgList &Args) const {
2423  // Darwin uses SjLj exceptions on ARM.
2424  if (getTriple().getArch() != llvm::Triple::arm &&
2425  getTriple().getArch() != llvm::Triple::thumb)
2427 
2428  // Only watchOS uses the new DWARF/Compact unwinding method.
2429  llvm::Triple Triple(ComputeLLVMTriple(Args));
2430  if (Triple.isWatchABI())
2431  return llvm::ExceptionHandling::DwarfCFI;
2432 
2433  return llvm::ExceptionHandling::SjLj;
2434 }
2435 
2437  assert(TargetInitialized && "Target not initialized!");
2438  if (isTargetIPhoneOS() && isIPhoneOSVersionLT(6, 0))
2439  return false;
2440  return true;
2441 }
2442 
2443 bool MachO::isPICDefault() const { return true; }
2444 
2445 bool MachO::isPIEDefault() const { return false; }
2446 
2448  return (getArch() == llvm::Triple::x86_64 ||
2449  getArch() == llvm::Triple::aarch64);
2450 }
2451 
2453  // Profiling instrumentation is only supported on x86.
2454  return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
2455 }
2456 
2457 void Darwin::addMinVersionArgs(const ArgList &Args,
2458  ArgStringList &CmdArgs) const {
2459  VersionTuple TargetVersion = getTargetVersion();
2460 
2461  if (isTargetWatchOS())
2462  CmdArgs.push_back("-watchos_version_min");
2463  else if (isTargetWatchOSSimulator())
2464  CmdArgs.push_back("-watchos_simulator_version_min");
2465  else if (isTargetTvOS())
2466  CmdArgs.push_back("-tvos_version_min");
2467  else if (isTargetTvOSSimulator())
2468  CmdArgs.push_back("-tvos_simulator_version_min");
2469  else if (isTargetIOSSimulator())
2470  CmdArgs.push_back("-ios_simulator_version_min");
2471  else if (isTargetIOSBased())
2472  CmdArgs.push_back("-iphoneos_version_min");
2473  else {
2474  assert(isTargetMacOS() && "unexpected target");
2475  CmdArgs.push_back("-macosx_version_min");
2476  }
2477 
2478  CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
2479 }
2480 
2481 void Darwin::addStartObjectFileArgs(const ArgList &Args,
2482  ArgStringList &CmdArgs) const {
2483  // Derived from startfile spec.
2484  if (Args.hasArg(options::OPT_dynamiclib)) {
2485  // Derived from darwin_dylib1 spec.
2486  if (isTargetWatchOSBased()) {
2487  ; // watchOS does not need dylib1.o.
2488  } else if (isTargetIOSSimulator()) {
2489  ; // iOS simulator does not need dylib1.o.
2490  } else if (isTargetIPhoneOS()) {
2491  if (isIPhoneOSVersionLT(3, 1))
2492  CmdArgs.push_back("-ldylib1.o");
2493  } else {
2494  if (isMacosxVersionLT(10, 5))
2495  CmdArgs.push_back("-ldylib1.o");
2496  else if (isMacosxVersionLT(10, 6))
2497  CmdArgs.push_back("-ldylib1.10.5.o");
2498  }
2499  } else {
2500  if (Args.hasArg(options::OPT_bundle)) {
2501  if (!Args.hasArg(options::OPT_static)) {
2502  // Derived from darwin_bundle1 spec.
2503  if (isTargetWatchOSBased()) {
2504  ; // watchOS does not need bundle1.o.
2505  } else if (isTargetIOSSimulator()) {
2506  ; // iOS simulator does not need bundle1.o.
2507  } else if (isTargetIPhoneOS()) {
2508  if (isIPhoneOSVersionLT(3, 1))
2509  CmdArgs.push_back("-lbundle1.o");
2510  } else {
2511  if (isMacosxVersionLT(10, 6))
2512  CmdArgs.push_back("-lbundle1.o");
2513  }
2514  }
2515  } else {
2516  if (Args.hasArg(options::OPT_pg) && SupportsProfiling()) {
2517  if (isTargetMacOS() && isMacosxVersionLT(10, 9)) {
2518  if (Args.hasArg(options::OPT_static) ||
2519  Args.hasArg(options::OPT_object) ||
2520  Args.hasArg(options::OPT_preload)) {
2521  CmdArgs.push_back("-lgcrt0.o");
2522  } else {
2523  CmdArgs.push_back("-lgcrt1.o");
2524 
2525  // darwin_crt2 spec is empty.
2526  }
2527  // By default on OS X 10.8 and later, we don't link with a crt1.o
2528  // file and the linker knows to use _main as the entry point. But,
2529  // when compiling with -pg, we need to link with the gcrt1.o file,
2530  // so pass the -no_new_main option to tell the linker to use the
2531  // "start" symbol as the entry point.
2532  if (isTargetMacOS() && !isMacosxVersionLT(10, 8))
2533  CmdArgs.push_back("-no_new_main");
2534  } else {
2535  getDriver().Diag(diag::err_drv_clang_unsupported_opt_pg_darwin)
2536  << isTargetMacOS();
2537  }
2538  } else {
2539  if (Args.hasArg(options::OPT_static) ||
2540  Args.hasArg(options::OPT_object) ||
2541  Args.hasArg(options::OPT_preload)) {
2542  CmdArgs.push_back("-lcrt0.o");
2543  } else {
2544  // Derived from darwin_crt1 spec.
2545  if (isTargetWatchOSBased()) {
2546  ; // watchOS does not need crt1.o.
2547  } else if (isTargetIOSSimulator()) {
2548  ; // iOS simulator does not need crt1.o.
2549  } else if (isTargetIPhoneOS()) {
2550  if (getArch() == llvm::Triple::aarch64)
2551  ; // iOS does not need any crt1 files for arm64
2552  else if (isIPhoneOSVersionLT(3, 1))
2553  CmdArgs.push_back("-lcrt1.o");
2554  else if (isIPhoneOSVersionLT(6, 0))
2555  CmdArgs.push_back("-lcrt1.3.1.o");
2556  } else {
2557  if (isMacosxVersionLT(10, 5))
2558  CmdArgs.push_back("-lcrt1.o");
2559  else if (isMacosxVersionLT(10, 6))
2560  CmdArgs.push_back("-lcrt1.10.5.o");
2561  else if (isMacosxVersionLT(10, 8))
2562  CmdArgs.push_back("-lcrt1.10.6.o");
2563 
2564  // darwin_crt2 spec is empty.
2565  }
2566  }
2567  }
2568  }
2569  }
2570 
2571  if (!isTargetIPhoneOS() && Args.hasArg(options::OPT_shared_libgcc) &&
2572  !isTargetWatchOS() && isMacosxVersionLT(10, 5)) {
2573  const char *Str = Args.MakeArgString(GetFilePath("crt3.o"));
2574  CmdArgs.push_back(Str);
2575  }
2576 }
2577 
2578 void Darwin::CheckObjCARC() const {
2580  (isTargetMacOS() && !isMacosxVersionLT(10, 6)))
2581  return;
2582  getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
2583 }
2584 
2586  const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
2588  Res |= SanitizerKind::Address;
2589  Res |= SanitizerKind::PointerCompare;
2590  Res |= SanitizerKind::PointerSubtract;
2591  Res |= SanitizerKind::Leak;
2592  Res |= SanitizerKind::Fuzzer;
2593  Res |= SanitizerKind::FuzzerNoLink;
2594  Res |= SanitizerKind::Function;
2595 
2596  // Prior to 10.9, macOS shipped a version of the C++ standard library without
2597  // C++11 support. The same is true of iOS prior to version 5. These OS'es are
2598  // incompatible with -fsanitize=vptr.
2599  if (!(isTargetMacOS() && isMacosxVersionLT(10, 9))
2600  && !(isTargetIPhoneOS() && isIPhoneOSVersionLT(5, 0)))
2601  Res |= SanitizerKind::Vptr;
2602 
2603  if (isTargetMacOS()) {
2604  if (IsX86_64)
2605  Res |= SanitizerKind::Thread;
2606  } else if (isTargetIOSSimulator() || isTargetTvOSSimulator()) {
2607  if (IsX86_64)
2608  Res |= SanitizerKind::Thread;
2609  }
2610  return Res;
2611 }
2612 
2613 void Darwin::printVerboseInfo(raw_ostream &OS) const {
2614  CudaInstallation.print(OS);
2615 }
StringRef getSysRoot() const
Returns the sysroot path.
static bool GetReleaseVersion(StringRef Str, unsigned &Major, unsigned &Minor, unsigned &Micro, bool &HadExtra)
GetReleaseVersion - Parse (([0-9]+)(.
Definition: Driver.cpp:4880
StringRef getMachOArchName(const llvm::opt::ArgList &Args) const
Get the "MachO" arch name for a particular compiler invocation.
Definition: Darwin.cpp:829
static void addExternCSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory with extern "C" semantics to CC1 arguments...
Definition: ToolChain.cpp:816
virtual std::string ComputeLLVMTriple(const llvm::opt::ArgList &Args, types::ID InputType=types::TY_INVALID) const
ComputeLLVMTriple - Return the LLVM target triple to use, after taking command line arguments into ac...
Definition: ToolChain.cpp:592
bool SupportsEmbeddedBitcode() const override
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: Darwin.cpp:2436
bool isMacosxVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:415
Tool * buildAssembler() const override
Definition: Darwin.cpp:900
std::string GetTemporaryPath(StringRef Prefix, StringRef Suffix) const
GetTemporaryPath - Return the pathname of a temporary file to use as part of compilation; the file wi...
Definition: Driver.cpp:4652
Link the library in even if it can&#39;t be found in the VFS.
Definition: Darwin.h:180
Use the embedded runtime from the macho_embedded directory.
Definition: Darwin.h:183
const char * getTypeTempSuffix(ID Id, bool CLMode=false)
getTypeTempSuffix - Return the suffix to use when creating a temp file of this type, or null if unspecified.
Definition: Types.cpp:67
void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add the clang cc1 arguments for system include paths.
Definition: Darwin.cpp:1828
bool UseDwarfDebugFlags() const override
UseDwarfDebugFlags - Embed the compile options to clang into the Dwarf compile unit information...
Definition: Darwin.cpp:2416
StringRef P
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:538
Defines types useful for describing an Objective-C runtime.
CXXStdlibType GetDefaultCXXStdlibType() const override
Definition: Darwin.cpp:751
The base class of the type hierarchy.
Definition: Type.h:1436
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:122
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:840
void AddLinkRuntimeLib(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, StringRef Component, RuntimeLinkOptions Opts=RuntimeLinkOptions(), bool IsShared=false) const
Add a runtime library to the list of items to link.
Definition: Darwin.cpp:997
bool HasNativeLLVMSupport() const override
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: Darwin.cpp:749
bool embedBitcodeEnabled() const
Definition: Driver.h:338
constexpr XRayInstrMask Function
Definition: XRayInstr.h:38
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:541
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:108
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:428
void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add any profiling runtime libraries that are needed.
Definition: Darwin.cpp:1113
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
DarwinEnvironmentKind TargetEnvironment
Definition: Darwin.h:287
CudaInstallationDetector CudaInstallation
Definition: Darwin.h:295
bool TargetInitialized
Whether the information on the target has been initialized.
Definition: Darwin.h:272
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:275
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool ForceStaticHostRuntime=false, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
bool hasBlocksRuntime() const override
Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
Definition: Darwin.cpp:773
types::ID LookupTypeForExtension(StringRef Ext) const override
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: Darwin.cpp:739
&#39;macosx-fragile&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the fragil...
Definition: ObjCRuntime.h:39
const char * getFilename() const
Definition: InputInfo.h:83
path_list & getProgramPaths()
Definition: ToolChain.h:238
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Darwin.cpp:2445
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:340
ActionList & getInputs()
Definition: Action.h:144
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: Darwin.cpp:2407
StringRef getPlatformFamily() const
Definition: Darwin.cpp:1048
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:119
Darwin - The base Darwin tool chain.
Definition: Darwin.h:265
ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const override
Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
Definition: Darwin.cpp:762
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Darwin.cpp:2443
Action - Represent an abstract compilation step to perform.
Definition: Action.h:47
static bool needsProfileRT(const llvm::opt::ArgList &Args)
needsProfileRT - returns true if instrumentation profile is on.
Definition: ToolChain.cpp:471
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: Darwin.cpp:2069
The information about the darwin SDK that was used during this compilation.
Definition: DarwinSDKInfo.h:21
Tool * getTool(Action::ActionClass AC) const override
Definition: Darwin.cpp:879
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
static bool hasExportSymbolDirective(const ArgList &Args)
Check if the link command contains a symbol export directive.
Definition: Darwin.cpp:1093
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:503
types::ID getType() const
Definition: Action.h:142
CompileCommand Cmd
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
bool needsXRayRt() const
Definition: XRayArgs.h:40
types::ID getType() const
Definition: InputInfo.h:77
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Darwin.cpp:2585
bool isTargetInitialized() const
Definition: Darwin.h:402
void AddMachOArch(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.cpp:154
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Darwin.cpp:2447
StringRef getPlatform() const
Definition: ToolChain.h:215
llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const override
GetExceptionModel - Return the tool chain exception model.
Definition: Darwin.cpp:2422
static bool shouldLinkerNotDedup(bool IsLinkerOnlyAction, const ArgList &Args)
Pass -no_deduplicate to ld64 under certain conditions:
Definition: Darwin.cpp:185
Darwin(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Darwin - Darwin tool chain for i386 and x86_64.
Definition: Darwin.cpp:735
&#39;watchos&#39; is a variant of iOS for Apple&#39;s watchOS.
Definition: ObjCRuntime.h:48
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Darwin.cpp:2613
Defines a function that returns the minimum OS versions supporting C++17&#39;s aligned allocation functio...
Expected< Optional< DarwinSDKInfo > > parseDarwinSDKInfo(llvm::vfs::FileSystem &VFS, StringRef SDKRootPath)
Parse the SDK information from the SDKSettings.json file.
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:76
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: Darwin.cpp:2318
ActionClass getKind() const
Definition: Action.h:141
bool isTargetWatchOSBased() const
Definition: Darwin.h:392
std::string GetTemporaryDirectory(StringRef Prefix) const
GetTemporaryDirectory - Return the pathname of a temporary directory to use as part of compilation; t...
Definition: Driver.cpp:4663
&#39;macosx&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:34
llvm::StringRef getAsString(SyncScope S)
Definition: SyncScope.h:50
static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol)
Add an export directive for Symbol to the link command.
Definition: Darwin.cpp:1108
virtual bool SupportsEmbeddedBitcode() const
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: ToolChain.h:478
void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: Darwin.cpp:1904
VersionTuple TargetVersion
The OS version we are targeting.
Definition: Darwin.h:290
void AddLinkRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool ForceLinkBuiltinRT=false) const override
Add the linker arguments to link the compiler runtime library.
Definition: Darwin.cpp:1156
static const char * ArmMachOArchNameCPU(StringRef CPU)
Definition: Darwin.cpp:810
SmallString< 128 > getStatsFileName(const llvm::opt::ArgList &Args, const InputInfo &Output, const InputInfo &Input, const Driver &D)
Handles the -save-stats option and returns the filename to save statistics to.
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use system-specific CUDA includes.
Definition: Darwin.cpp:784
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
bool isTargetIOSSimulator() const
Definition: Darwin.h:356
llvm::Triple::ArchType getArchTypeForMachOArchName(StringRef Str)
Definition: Darwin.cpp:34
unsigned GetDefaultDwarfVersion() const override
Definition: Darwin.cpp:989
virtual void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.h:167
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:213
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Cuda.cpp:232
Link the library in before any others.
Definition: Darwin.h:189
static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion)
Returns the most appropriate macOS target version for the current process.
Definition: Darwin.cpp:1230
#define false
Definition: stdbool.h:17
Kind
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: Darwin.cpp:2339
bool SupportsProfiling() const override
SupportsProfiling - Does this tool chain support -pg.
Definition: Darwin.cpp:2452
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:186
VersionTuple getTargetVersion() const
Definition: Darwin.h:404
const Driver & getDriver() const
Definition: ToolChain.h:197
std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args, types::ID InputType) const override
ComputeEffectiveClangTriple - Return the Clang triple to use for this target, which may take into acc...
Definition: Darwin.cpp:855
static StringRef getXcodeDeveloperPath(StringRef PathIntoXcode)
Take a path that speculatively points into Xcode and return the XCODE/Contents/Developer path if it i...
Definition: Darwin.cpp:926
bool isTargetIOSBased() const
Is the target either iOS or an iOS simulator?
Definition: Darwin.h:175
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:801
DarwinClang(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Darwin.cpp:904
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
constexpr XRayInstrMask None
Definition: XRayInstr.h:37
Optional< DarwinSDKInfo > SDKInfo
The information about the darwin SDK that was used.
Definition: Darwin.h:293
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:98
void addStartObjectFileArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2481
static const char * ArmMachOArchName(StringRef Arch)
Definition: Darwin.cpp:793
void AddLinkARCArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add the linker arguments to link the ARC runtime library.
Definition: Darwin.cpp:935
DarwinPlatformKind TargetPlatform
Definition: Darwin.h:286
Dataflow Directional Tag Classes.
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:703
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:683
static StringRef getSDKName(StringRef isysroot)
Definition: Darwin.cpp:1062
void CheckObjCARC() const override
Complain if this tool chain doesn&#39;t support Objective-C ARC.
Definition: Darwin.cpp:2578
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:84
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:27
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
StringRef getOSLibraryNameSuffix(bool IgnoreSim=false) const override
Definition: Darwin.cpp:1075
llvm::VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS)
std::string SysRoot
sysroot, if present
Definition: Driver.h:147
unsigned getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
Tool - Information on a specific compilation tool.
Definition: Tool.h:33
void setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str)
Definition: Darwin.cpp:69
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:116
void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2457
void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: Darwin.cpp:1998
&#39;ios&#39; is the Apple-provided NeXT-derived runtime on iOS or the iOS simulator; it is always non-fragil...
Definition: ObjCRuntime.h:44
StringRef getDefaultUniversalArchName() const
Provide the default architecture name (as expected by -arch) for this toolchain.
Definition: ToolChain.cpp:226
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
const Driver & getDriver() const
Definition: Compilation.h:133
RuntimeLinkOptions
Options to control how a runtime library is linked.
Definition: Darwin.h:178
const llvm::Triple & getTriple() const
Definition: ToolChain.h:199
Tool * buildLinker() const override
Definition: Darwin.cpp:898
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:923
ID lookupTypeForExtension(llvm::StringRef Ext)
lookupTypeForExtension - Lookup the type to use for the file extension Ext.
Definition: Types.cpp:219
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:301
Emit rpaths for as well as the resource directory.
Definition: Darwin.h:186
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Add warning options that need to be passed to cc1 for this target.
Definition: Darwin.cpp:908
bool isTargetWatchOSSimulator() const
Definition: Darwin.h:387
bool isFilename() const
Definition: InputInfo.h:75
virtual void AddLinkRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool ForceLinkBuiltinRT=false) const
Add the linker arguments to link the compiler runtime library.
Definition: Darwin.cpp:2281
static bool needsGCovInstrumentation(const llvm::opt::ArgList &Args)
Returns true if gcov instrumentation (-fprofile-arcs or –coverage) is on.
Definition: ToolChain.cpp:489
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:303
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:782
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:232
RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const override
Definition: Darwin.cpp:1144
bool hasNativeARC() const
Does this runtime natively provide the ARC entrypoints?
Definition: ObjCRuntime.h:161
static bool isObjCRuntimeLinked(const ArgList &Args)
Determine whether we are linking the ObjC runtime.
Definition: Darwin.cpp:420
bool isTargetTvOSSimulator() const
Definition: Darwin.h:372
bool isIPhoneOSVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:409
bool hasSubscripting() const
Does this runtime directly support the subscripting methods?
Definition: ObjCRuntime.h:297
void setTarget(DarwinPlatformKind Platform, DarwinEnvironmentKind Environment, unsigned Major, unsigned Minor, unsigned Micro) const
Definition: Darwin.h:332
bool empty() const
Definition: Job.h:193
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:661
bool isAlignedAllocationUnavailable() const
Return true if c++17 aligned allocation/deallocation functions are not implemented in the c++ standar...
Definition: Darwin.cpp:2297
void AddCCKextLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
AddCCKextLibArgs - Add the system specific linker arguments to use for kernel extensions (Darwin-spec...
Definition: Darwin.cpp:2043
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:131