clang  8.0.0svn
Darwin.cpp
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1 //===--- Darwin.cpp - Darwin Tool and ToolChain Implementations -*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Darwin.h"
11 #include "Arch/ARM.h"
12 #include "CommonArgs.h"
17 #include "clang/Driver/Driver.h"
19 #include "clang/Driver/Options.h"
21 #include "llvm/ADT/StringSwitch.h"
22 #include "llvm/Option/ArgList.h"
23 #include "llvm/Support/Path.h"
24 #include "llvm/Support/ScopedPrinter.h"
25 #include "llvm/Support/TargetParser.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 assember 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(llvm::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()) {
228  // If we are using LTO, then automatically create a temporary file path for
229  // the linker to use, so that it's lifetime will extend past a possible
230  // dsymutil step.
231  if (Version[0] >= 116 && NeedsTempPath(Inputs)) {
232  const char *TmpPath = C.getArgs().MakeArgString(
233  D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object)));
234  C.addTempFile(TmpPath);
235  CmdArgs.push_back("-object_path_lto");
236  CmdArgs.push_back(TmpPath);
237  }
238  }
239 
240  // Use -lto_library option to specify the libLTO.dylib path. Try to find
241  // it in clang installed libraries. ld64 will only look at this argument
242  // when it actually uses LTO, so libLTO.dylib only needs to exist at link
243  // time if ld64 decides that it needs to use LTO.
244  // Since this is passed unconditionally, ld64 will never look for libLTO.dylib
245  // next to it. That's ok since ld64 using a libLTO.dylib not matching the
246  // clang version won't work anyways.
247  if (Version[0] >= 133) {
248  // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
249  StringRef P = llvm::sys::path::parent_path(D.Dir);
250  SmallString<128> LibLTOPath(P);
251  llvm::sys::path::append(LibLTOPath, "lib");
252  llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
253  CmdArgs.push_back("-lto_library");
254  CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
255  }
256 
257  // ld64 version 262 and above run the deduplicate pass by default.
258  if (Version[0] >= 262 && shouldLinkerNotDedup(C.getJobs().empty(), Args))
259  CmdArgs.push_back("-no_deduplicate");
260 
261  // Derived from the "link" spec.
262  Args.AddAllArgs(CmdArgs, options::OPT_static);
263  if (!Args.hasArg(options::OPT_static))
264  CmdArgs.push_back("-dynamic");
265  if (Args.hasArg(options::OPT_fgnu_runtime)) {
266  // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
267  // here. How do we wish to handle such things?
268  }
269 
270  if (!Args.hasArg(options::OPT_dynamiclib)) {
271  AddMachOArch(Args, CmdArgs);
272  // FIXME: Why do this only on this path?
273  Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
274 
275  Args.AddLastArg(CmdArgs, options::OPT_bundle);
276  Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
277  Args.AddAllArgs(CmdArgs, options::OPT_client__name);
278 
279  Arg *A;
280  if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
281  (A = Args.getLastArg(options::OPT_current__version)) ||
282  (A = Args.getLastArg(options::OPT_install__name)))
283  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
284  << "-dynamiclib";
285 
286  Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
287  Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
288  Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
289  } else {
290  CmdArgs.push_back("-dylib");
291 
292  Arg *A;
293  if ((A = Args.getLastArg(options::OPT_bundle)) ||
294  (A = Args.getLastArg(options::OPT_bundle__loader)) ||
295  (A = Args.getLastArg(options::OPT_client__name)) ||
296  (A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
297  (A = Args.getLastArg(options::OPT_keep__private__externs)) ||
298  (A = Args.getLastArg(options::OPT_private__bundle)))
299  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
300  << "-dynamiclib";
301 
302  Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
303  "-dylib_compatibility_version");
304  Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
305  "-dylib_current_version");
306 
307  AddMachOArch(Args, CmdArgs);
308 
309  Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
310  "-dylib_install_name");
311  }
312 
313  Args.AddLastArg(CmdArgs, options::OPT_all__load);
314  Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
315  Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
316  if (MachOTC.isTargetIOSBased())
317  Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
318  Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
319  Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
320  Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
321  Args.AddLastArg(CmdArgs, options::OPT_dynamic);
322  Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
323  Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
324  Args.AddAllArgs(CmdArgs, options::OPT_force__load);
325  Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
326  Args.AddAllArgs(CmdArgs, options::OPT_image__base);
327  Args.AddAllArgs(CmdArgs, options::OPT_init);
328 
329  // Add the deployment target.
330  MachOTC.addMinVersionArgs(Args, CmdArgs);
331 
332  Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
333  Args.AddLastArg(CmdArgs, options::OPT_multi__module);
334  Args.AddLastArg(CmdArgs, options::OPT_single__module);
335  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
336  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
337 
338  if (const Arg *A =
339  Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
340  options::OPT_fno_pie, options::OPT_fno_PIE)) {
341  if (A->getOption().matches(options::OPT_fpie) ||
342  A->getOption().matches(options::OPT_fPIE))
343  CmdArgs.push_back("-pie");
344  else
345  CmdArgs.push_back("-no_pie");
346  }
347 
348  // for embed-bitcode, use -bitcode_bundle in linker command
349  if (C.getDriver().embedBitcodeEnabled()) {
350  // Check if the toolchain supports bitcode build flow.
351  if (MachOTC.SupportsEmbeddedBitcode()) {
352  CmdArgs.push_back("-bitcode_bundle");
353  if (C.getDriver().embedBitcodeMarkerOnly() && Version[0] >= 278) {
354  CmdArgs.push_back("-bitcode_process_mode");
355  CmdArgs.push_back("marker");
356  }
357  } else
358  D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
359  }
360 
361  Args.AddLastArg(CmdArgs, options::OPT_prebind);
362  Args.AddLastArg(CmdArgs, options::OPT_noprebind);
363  Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
364  Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
365  Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
366  Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
367  Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
368  Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
369  Args.AddAllArgs(CmdArgs, options::OPT_segprot);
370  Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
371  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
372  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
373  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
374  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
375  Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
376  Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
377 
378  // Give --sysroot= preference, over the Apple specific behavior to also use
379  // --isysroot as the syslibroot.
380  StringRef sysroot = C.getSysRoot();
381  if (sysroot != "") {
382  CmdArgs.push_back("-syslibroot");
383  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
384  } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
385  CmdArgs.push_back("-syslibroot");
386  CmdArgs.push_back(A->getValue());
387  }
388 
389  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
390  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
391  Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
392  Args.AddAllArgs(CmdArgs, options::OPT_undefined);
393  Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
394  Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
395  Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
396  Args.AddAllArgs(CmdArgs, options::OPT_y);
397  Args.AddLastArg(CmdArgs, options::OPT_w);
398  Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
399  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
400  Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
401  Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
402  Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
403  Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
404  Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
405  Args.AddLastArg(CmdArgs, options::OPT_whyload);
406  Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
407  Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
408  Args.AddLastArg(CmdArgs, options::OPT_dylinker);
409  Args.AddLastArg(CmdArgs, options::OPT_Mach);
410 }
411 
412 /// Determine whether we are linking the ObjC runtime.
413 static bool isObjCRuntimeLinked(const ArgList &Args) {
414  if (isObjCAutoRefCount(Args)) {
415  Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
416  return true;
417  }
418  return Args.hasArg(options::OPT_fobjc_link_runtime);
419 }
420 
422  const InputInfo &Output,
423  const InputInfoList &Inputs,
424  const ArgList &Args,
425  const char *LinkingOutput) const {
426  assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
427 
428  // If the number of arguments surpasses the system limits, we will encode the
429  // input files in a separate file, shortening the command line. To this end,
430  // build a list of input file names that can be passed via a file with the
431  // -filelist linker option.
432  llvm::opt::ArgStringList InputFileList;
433 
434  // The logic here is derived from gcc's behavior; most of which
435  // comes from specs (starting with link_command). Consult gcc for
436  // more information.
437  ArgStringList CmdArgs;
438 
439  /// Hack(tm) to ignore linking errors when we are doing ARC migration.
440  if (Args.hasArg(options::OPT_ccc_arcmt_check,
441  options::OPT_ccc_arcmt_migrate)) {
442  for (const auto &Arg : Args)
443  Arg->claim();
444  const char *Exec =
445  Args.MakeArgString(getToolChain().GetProgramPath("touch"));
446  CmdArgs.push_back(Output.getFilename());
447  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
448  return;
449  }
450 
451  // I'm not sure why this particular decomposition exists in gcc, but
452  // we follow suite for ease of comparison.
453  AddLinkArgs(C, Args, CmdArgs, Inputs);
454 
455  // For LTO, pass the name of the optimization record file and other
456  // opt-remarks flags.
457  if (Args.hasFlag(options::OPT_fsave_optimization_record,
458  options::OPT_fno_save_optimization_record, false)) {
459  CmdArgs.push_back("-mllvm");
460  CmdArgs.push_back("-lto-pass-remarks-output");
461  CmdArgs.push_back("-mllvm");
462 
464  F = Output.getFilename();
465  F += ".opt.yaml";
466  CmdArgs.push_back(Args.MakeArgString(F));
467 
468  if (getLastProfileUseArg(Args)) {
469  CmdArgs.push_back("-mllvm");
470  CmdArgs.push_back("-lto-pass-remarks-with-hotness");
471 
472  if (const Arg *A =
473  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
474  CmdArgs.push_back("-mllvm");
475  std::string Opt =
476  std::string("-lto-pass-remarks-hotness-threshold=") + A->getValue();
477  CmdArgs.push_back(Args.MakeArgString(Opt));
478  }
479  }
480  }
481 
482  // Propagate the -moutline flag to the linker in LTO.
483  if (Args.hasFlag(options::OPT_moutline, options::OPT_mno_outline, false)) {
484  if (getMachOToolChain().getMachOArchName(Args) == "arm64") {
485  CmdArgs.push_back("-mllvm");
486  CmdArgs.push_back("-enable-machine-outliner");
487 
488  // Outline from linkonceodr functions by default in LTO.
489  CmdArgs.push_back("-mllvm");
490  CmdArgs.push_back("-enable-linkonceodr-outlining");
491  }
492  }
493 
494  // It seems that the 'e' option is completely ignored for dynamic executables
495  // (the default), and with static executables, the last one wins, as expected.
496  Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
497  options::OPT_Z_Flag, options::OPT_u_Group,
498  options::OPT_e, options::OPT_r});
499 
500  // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
501  // members of static archive libraries which implement Objective-C classes or
502  // categories.
503  if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
504  CmdArgs.push_back("-ObjC");
505 
506  CmdArgs.push_back("-o");
507  CmdArgs.push_back(Output.getFilename());
508 
509  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
510  getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
511 
512  // SafeStack requires its own runtime libraries
513  // These libraries should be linked first, to make sure the
514  // __safestack_init constructor executes before everything else
515  if (getToolChain().getSanitizerArgs().needsSafeStackRt()) {
516  getMachOToolChain().AddLinkRuntimeLib(Args, CmdArgs,
517  "libclang_rt.safestack_osx.a",
519  }
520 
521  Args.AddAllArgs(CmdArgs, options::OPT_L);
522 
523  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
524  // Build the input file for -filelist (list of linker input files) in case we
525  // need it later
526  for (const auto &II : Inputs) {
527  if (!II.isFilename()) {
528  // This is a linker input argument.
529  // We cannot mix input arguments and file names in a -filelist input, thus
530  // we prematurely stop our list (remaining files shall be passed as
531  // arguments).
532  if (InputFileList.size() > 0)
533  break;
534 
535  continue;
536  }
537 
538  InputFileList.push_back(II.getFilename());
539  }
540 
541  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
542  addOpenMPRuntime(CmdArgs, getToolChain(), Args);
543 
544  if (isObjCRuntimeLinked(Args) &&
545  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
546  // We use arclite library for both ARC and subscripting support.
547  getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
548 
549  CmdArgs.push_back("-framework");
550  CmdArgs.push_back("Foundation");
551  // Link libobj.
552  CmdArgs.push_back("-lobjc");
553  }
554 
555  if (LinkingOutput) {
556  CmdArgs.push_back("-arch_multiple");
557  CmdArgs.push_back("-final_output");
558  CmdArgs.push_back(LinkingOutput);
559  }
560 
561  if (Args.hasArg(options::OPT_fnested_functions))
562  CmdArgs.push_back("-allow_stack_execute");
563 
564  getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
565 
566  if (unsigned Parallelism =
567  getLTOParallelism(Args, getToolChain().getDriver())) {
568  CmdArgs.push_back("-mllvm");
569  CmdArgs.push_back(Args.MakeArgString("-threads=" + Twine(Parallelism)));
570  }
571 
572  if (getToolChain().ShouldLinkCXXStdlib(Args))
573  getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
574  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
575  // link_ssp spec is empty.
576 
577  // Let the tool chain choose which runtime library to link.
578  getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs);
579 
580  // No need to do anything for pthreads. Claim argument to avoid warning.
581  Args.ClaimAllArgs(options::OPT_pthread);
582  Args.ClaimAllArgs(options::OPT_pthreads);
583  }
584 
585  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
586  // endfile_spec is empty.
587  }
588 
589  Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
590  Args.AddAllArgs(CmdArgs, options::OPT_F);
591 
592  // -iframework should be forwarded as -F.
593  for (const Arg *A : Args.filtered(options::OPT_iframework))
594  CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
595 
596  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
597  if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
598  if (A->getValue() == StringRef("Accelerate")) {
599  CmdArgs.push_back("-framework");
600  CmdArgs.push_back("Accelerate");
601  }
602  }
603  }
604 
605  const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
606  std::unique_ptr<Command> Cmd =
607  llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
608  Cmd->setInputFileList(std::move(InputFileList));
609  C.addCommand(std::move(Cmd));
610 }
611 
613  const InputInfo &Output,
614  const InputInfoList &Inputs,
615  const ArgList &Args,
616  const char *LinkingOutput) const {
617  ArgStringList CmdArgs;
618 
619  CmdArgs.push_back("-create");
620  assert(Output.isFilename() && "Unexpected lipo output.");
621 
622  CmdArgs.push_back("-output");
623  CmdArgs.push_back(Output.getFilename());
624 
625  for (const auto &II : Inputs) {
626  assert(II.isFilename() && "Unexpected lipo input.");
627  CmdArgs.push_back(II.getFilename());
628  }
629 
630  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
631  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
632 }
633 
635  const InputInfo &Output,
636  const InputInfoList &Inputs,
637  const ArgList &Args,
638  const char *LinkingOutput) const {
639  ArgStringList CmdArgs;
640 
641  CmdArgs.push_back("-o");
642  CmdArgs.push_back(Output.getFilename());
643 
644  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
645  const InputInfo &Input = Inputs[0];
646  assert(Input.isFilename() && "Unexpected dsymutil input.");
647  CmdArgs.push_back(Input.getFilename());
648 
649  const char *Exec =
650  Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
651  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
652 }
653 
655  const InputInfo &Output,
656  const InputInfoList &Inputs,
657  const ArgList &Args,
658  const char *LinkingOutput) const {
659  ArgStringList CmdArgs;
660  CmdArgs.push_back("--verify");
661  CmdArgs.push_back("--debug-info");
662  CmdArgs.push_back("--eh-frame");
663  CmdArgs.push_back("--quiet");
664 
665  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
666  const InputInfo &Input = Inputs[0];
667  assert(Input.isFilename() && "Unexpected verify input");
668 
669  // Grabbing the output of the earlier dsymutil run.
670  CmdArgs.push_back(Input.getFilename());
671 
672  const char *Exec =
673  Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
674  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
675 }
676 
677 MachO::MachO(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
678  : ToolChain(D, Triple, Args) {
679  // We expect 'as', 'ld', etc. to be adjacent to our install dir.
680  getProgramPaths().push_back(getDriver().getInstalledDir());
681  if (getDriver().getInstalledDir() != getDriver().Dir)
682  getProgramPaths().push_back(getDriver().Dir);
683 }
684 
685 /// Darwin - Darwin tool chain for i386 and x86_64.
686 Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
687  : MachO(D, Triple, Args), TargetInitialized(false),
688  CudaInstallation(D, Triple, Args) {}
689 
692 
693  // Darwin always preprocesses assembly files (unless -x is used explicitly).
694  if (Ty == types::TY_PP_Asm)
695  return types::TY_Asm;
696 
697  return Ty;
698 }
699 
700 bool MachO::HasNativeLLVMSupport() const { return true; }
701 
703  // Default to use libc++ on OS X 10.9+ and iOS 7+.
704  if ((isTargetMacOS() && !isMacosxVersionLT(10, 9)) ||
705  (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
707  return ToolChain::CST_Libcxx;
708 
710 }
711 
712 /// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
713 ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
714  if (isTargetWatchOSBased())
716  if (isTargetIOSBased())
718  if (isNonFragile)
721 }
722 
723 /// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
725  if (isTargetWatchOSBased())
726  return true;
727  else if (isTargetIOSBased())
728  return !isIPhoneOSVersionLT(3, 2);
729  else {
730  assert(isTargetMacOS() && "unexpected darwin target");
731  return !isMacosxVersionLT(10, 6);
732  }
733 }
734 
735 void Darwin::AddCudaIncludeArgs(const ArgList &DriverArgs,
736  ArgStringList &CC1Args) const {
737  CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
738 }
739 
740 // This is just a MachO name translation routine and there's no
741 // way to join this into ARMTargetParser without breaking all
742 // other assumptions. Maybe MachO should consider standardising
743 // their nomenclature.
744 static const char *ArmMachOArchName(StringRef Arch) {
745  return llvm::StringSwitch<const char *>(Arch)
746  .Case("armv6k", "armv6")
747  .Case("armv6m", "armv6m")
748  .Case("armv5tej", "armv5")
749  .Case("xscale", "xscale")
750  .Case("armv4t", "armv4t")
751  .Case("armv7", "armv7")
752  .Cases("armv7a", "armv7-a", "armv7")
753  .Cases("armv7r", "armv7-r", "armv7")
754  .Cases("armv7em", "armv7e-m", "armv7em")
755  .Cases("armv7k", "armv7-k", "armv7k")
756  .Cases("armv7m", "armv7-m", "armv7m")
757  .Cases("armv7s", "armv7-s", "armv7s")
758  .Default(nullptr);
759 }
760 
761 static const char *ArmMachOArchNameCPU(StringRef CPU) {
762  llvm::ARM::ArchKind ArchKind = llvm::ARM::parseCPUArch(CPU);
763  if (ArchKind == llvm::ARM::ArchKind::INVALID)
764  return nullptr;
765  StringRef Arch = llvm::ARM::getArchName(ArchKind);
766 
767  // FIXME: Make sure this MachO triple mangling is really necessary.
768  // ARMv5* normalises to ARMv5.
769  if (Arch.startswith("armv5"))
770  Arch = Arch.substr(0, 5);
771  // ARMv6*, except ARMv6M, normalises to ARMv6.
772  else if (Arch.startswith("armv6") && !Arch.endswith("6m"))
773  Arch = Arch.substr(0, 5);
774  // ARMv7A normalises to ARMv7.
775  else if (Arch.endswith("v7a"))
776  Arch = Arch.substr(0, 5);
777  return Arch.data();
778 }
779 
780 StringRef MachO::getMachOArchName(const ArgList &Args) const {
781  switch (getTriple().getArch()) {
782  default:
784 
785  case llvm::Triple::aarch64:
786  return "arm64";
787 
788  case llvm::Triple::thumb:
789  case llvm::Triple::arm:
790  if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ))
791  if (const char *Arch = ArmMachOArchName(A->getValue()))
792  return Arch;
793 
794  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
795  if (const char *Arch = ArmMachOArchNameCPU(A->getValue()))
796  return Arch;
797 
798  return "arm";
799  }
800 }
801 
803 
805 
806 std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
807  types::ID InputType) const {
808  llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
809 
810  // If the target isn't initialized (e.g., an unknown Darwin platform, return
811  // the default triple).
812  if (!isTargetInitialized())
813  return Triple.getTriple();
814 
815  SmallString<16> Str;
816  if (isTargetWatchOSBased())
817  Str += "watchos";
818  else if (isTargetTvOSBased())
819  Str += "tvos";
820  else if (isTargetIOSBased())
821  Str += "ios";
822  else
823  Str += "macosx";
824  Str += getTargetVersion().getAsString();
825  Triple.setOSName(Str);
826 
827  return Triple.getTriple();
828 }
829 
831  switch (AC) {
833  if (!Lipo)
834  Lipo.reset(new tools::darwin::Lipo(*this));
835  return Lipo.get();
837  if (!Dsymutil)
838  Dsymutil.reset(new tools::darwin::Dsymutil(*this));
839  return Dsymutil.get();
841  if (!VerifyDebug)
842  VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
843  return VerifyDebug.get();
844  default:
845  return ToolChain::getTool(AC);
846  }
847 }
848 
849 Tool *MachO::buildLinker() const { return new tools::darwin::Linker(*this); }
850 
852  return new tools::darwin::Assembler(*this);
853 }
854 
855 DarwinClang::DarwinClang(const Driver &D, const llvm::Triple &Triple,
856  const ArgList &Args)
857  : Darwin(D, Triple, Args) {}
858 
859 void DarwinClang::addClangWarningOptions(ArgStringList &CC1Args) const {
860  // For modern targets, promote certain warnings to errors.
861  if (isTargetWatchOSBased() || getTriple().isArch64Bit()) {
862  // Always enable -Wdeprecated-objc-isa-usage and promote it
863  // to an error.
864  CC1Args.push_back("-Wdeprecated-objc-isa-usage");
865  CC1Args.push_back("-Werror=deprecated-objc-isa-usage");
866 
867  // For iOS and watchOS, also error about implicit function declarations,
868  // as that can impact calling conventions.
869  if (!isTargetMacOS())
870  CC1Args.push_back("-Werror=implicit-function-declaration");
871  }
872 }
873 
874 void DarwinClang::AddLinkARCArgs(const ArgList &Args,
875  ArgStringList &CmdArgs) const {
876  // Avoid linking compatibility stubs on i386 mac.
877  if (isTargetMacOS() && getArch() == llvm::Triple::x86)
878  return;
879 
880  ObjCRuntime runtime = getDefaultObjCRuntime(/*nonfragile*/ true);
881 
882  if ((runtime.hasNativeARC() || !isObjCAutoRefCount(Args)) &&
883  runtime.hasSubscripting())
884  return;
885 
886  CmdArgs.push_back("-force_load");
887  SmallString<128> P(getDriver().ClangExecutable);
888  llvm::sys::path::remove_filename(P); // 'clang'
889  llvm::sys::path::remove_filename(P); // 'bin'
890  llvm::sys::path::append(P, "lib", "arc", "libarclite_");
891  // Mash in the platform.
893  P += "watchsimulator";
894  else if (isTargetWatchOS())
895  P += "watchos";
896  else if (isTargetTvOSSimulator())
897  P += "appletvsimulator";
898  else if (isTargetTvOS())
899  P += "appletvos";
900  else if (isTargetIOSSimulator())
901  P += "iphonesimulator";
902  else if (isTargetIPhoneOS())
903  P += "iphoneos";
904  else
905  P += "macosx";
906  P += ".a";
907 
908  CmdArgs.push_back(Args.MakeArgString(P));
909 }
910 
912  // Default to use DWARF 2 on OS X 10.10 / iOS 8 and lower.
913  if ((isTargetMacOS() && isMacosxVersionLT(10, 11)) ||
915  return 2;
916  return 4;
917 }
918 
919 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
920  StringRef DarwinLibName,
921  RuntimeLinkOptions Opts) const {
922  SmallString<128> Dir(getDriver().ResourceDir);
923  llvm::sys::path::append(
924  Dir, "lib", (Opts & RLO_IsEmbedded) ? "macho_embedded" : "darwin");
925 
926  SmallString<128> P(Dir);
927  llvm::sys::path::append(P, DarwinLibName);
928 
929  // For now, allow missing resource libraries to support developers who may
930  // not have compiler-rt checked out or integrated into their build (unless
931  // we explicitly force linking with this library).
932  if ((Opts & RLO_AlwaysLink) || getVFS().exists(P)) {
933  const char *LibArg = Args.MakeArgString(P);
934  if (Opts & RLO_FirstLink)
935  CmdArgs.insert(CmdArgs.begin(), LibArg);
936  else
937  CmdArgs.push_back(LibArg);
938  }
939 
940  // Adding the rpaths might negatively interact when other rpaths are involved,
941  // so we should make sure we add the rpaths last, after all user-specified
942  // rpaths. This is currently true from this place, but we need to be
943  // careful if this function is ever called before user's rpaths are emitted.
944  if (Opts & RLO_AddRPath) {
945  assert(DarwinLibName.endswith(".dylib") && "must be a dynamic library");
946 
947  // Add @executable_path to rpath to support having the dylib copied with
948  // the executable.
949  CmdArgs.push_back("-rpath");
950  CmdArgs.push_back("@executable_path");
951 
952  // Add the path to the resource dir to rpath to support using the dylib
953  // from the default location without copying.
954  CmdArgs.push_back("-rpath");
955  CmdArgs.push_back(Args.MakeArgString(Dir));
956  }
957 }
958 
959 StringRef Darwin::getPlatformFamily() const {
960  switch (TargetPlatform) {
961  case DarwinPlatformKind::MacOS:
962  return "MacOSX";
963  case DarwinPlatformKind::IPhoneOS:
964  return "iPhone";
965  case DarwinPlatformKind::TvOS:
966  return "AppleTV";
967  case DarwinPlatformKind::WatchOS:
968  return "Watch";
969  }
970  llvm_unreachable("Unsupported platform");
971 }
972 
973 StringRef Darwin::getSDKName(StringRef isysroot) {
974  // Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
975  llvm::sys::path::const_iterator SDKDir;
976  auto BeginSDK = llvm::sys::path::begin(isysroot);
977  auto EndSDK = llvm::sys::path::end(isysroot);
978  for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
979  StringRef SDK = *IT;
980  if (SDK.endswith(".sdk"))
981  return SDK.slice(0, SDK.size() - 4);
982  }
983  return "";
984 }
985 
987  switch(TargetPlatform) {
988  case DarwinPlatformKind::MacOS:
989  return "osx";
990  case DarwinPlatformKind::IPhoneOS:
991  return TargetEnvironment == NativeEnvironment ? "ios" : "iossim";
992  case DarwinPlatformKind::TvOS:
993  return TargetEnvironment == NativeEnvironment ? "tvos" : "tvossim";
994  case DarwinPlatformKind::WatchOS:
995  return TargetEnvironment == NativeEnvironment ? "watchos" : "watchossim";
996  }
997  llvm_unreachable("Unsupported platform");
998 }
999 
1000 /// Check if the link command contains a symbol export directive.
1001 static bool hasExportSymbolDirective(const ArgList &Args) {
1002  for (Arg *A : Args) {
1003  if (A->getOption().matches(options::OPT_exported__symbols__list))
1004  return true;
1005  if (!A->getOption().matches(options::OPT_Wl_COMMA) &&
1006  !A->getOption().matches(options::OPT_Xlinker))
1007  continue;
1008  if (A->containsValue("-exported_symbols_list") ||
1009  A->containsValue("-exported_symbol"))
1010  return true;
1011  }
1012  return false;
1013 }
1014 
1015 /// Add an export directive for \p Symbol to the link command.
1016 static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
1017  CmdArgs.push_back("-exported_symbol");
1018  CmdArgs.push_back(Symbol);
1019 }
1020 
1021 void Darwin::addProfileRTLibs(const ArgList &Args,
1022  ArgStringList &CmdArgs) const {
1023  if (!needsProfileRT(Args)) return;
1024 
1026  Args, CmdArgs,
1027  (Twine("libclang_rt.profile_") + getOSLibraryNameSuffix() + ".a").str(),
1029 
1030  // If we have a symbol export directive and we're linking in the profile
1031  // runtime, automatically export symbols necessary to implement some of the
1032  // runtime's functionality.
1033  if (hasExportSymbolDirective(Args)) {
1034  addExportedSymbol(CmdArgs, "___llvm_profile_filename");
1035  addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
1036  addExportedSymbol(CmdArgs, "_lprofCurFilename");
1037  }
1038 }
1039 
1040 void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
1041  ArgStringList &CmdArgs,
1042  StringRef Sanitizer,
1043  bool Shared) const {
1044  auto RLO = RuntimeLinkOptions(RLO_AlwaysLink | (Shared ? RLO_AddRPath : 0U));
1045  AddLinkRuntimeLib(Args, CmdArgs,
1046  (Twine("libclang_rt.") + Sanitizer + "_" +
1048  (Shared ? "_dynamic.dylib" : ".a"))
1049  .str(),
1050  RLO);
1051 }
1052 
1054  const ArgList &Args) const {
1055  if (Arg* A = Args.getLastArg(options::OPT_rtlib_EQ)) {
1056  StringRef Value = A->getValue();
1057  if (Value != "compiler-rt")
1058  getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
1059  << Value << "darwin";
1060  }
1061 
1063 }
1064 
1065 void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
1066  ArgStringList &CmdArgs) const {
1067  // Call once to ensure diagnostic is printed if wrong value was specified
1068  GetRuntimeLibType(Args);
1069 
1070  // Darwin doesn't support real static executables, don't link any runtime
1071  // libraries with -static.
1072  if (Args.hasArg(options::OPT_static) ||
1073  Args.hasArg(options::OPT_fapple_kext) ||
1074  Args.hasArg(options::OPT_mkernel))
1075  return;
1076 
1077  // Reject -static-libgcc for now, we can deal with this when and if someone
1078  // cares. This is useful in situations where someone wants to statically link
1079  // something like libstdc++, and needs its runtime support routines.
1080  if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
1081  getDriver().Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
1082  return;
1083  }
1084 
1085  const SanitizerArgs &Sanitize = getSanitizerArgs();
1086  if (Sanitize.needsAsanRt())
1087  AddLinkSanitizerLibArgs(Args, CmdArgs, "asan");
1088  if (Sanitize.needsLsanRt())
1089  AddLinkSanitizerLibArgs(Args, CmdArgs, "lsan");
1090  if (Sanitize.needsUbsanRt())
1091  AddLinkSanitizerLibArgs(Args, CmdArgs,
1092  Sanitize.requiresMinimalRuntime() ? "ubsan_minimal"
1093  : "ubsan",
1094  Sanitize.needsSharedRt());
1095  if (Sanitize.needsTsanRt())
1096  AddLinkSanitizerLibArgs(Args, CmdArgs, "tsan");
1097  if (Sanitize.needsFuzzer() && !Args.hasArg(options::OPT_dynamiclib)) {
1098  AddLinkSanitizerLibArgs(Args, CmdArgs, "fuzzer", /*shared=*/false);
1099 
1100  // Libfuzzer is written in C++ and requires libcxx.
1101  AddCXXStdlibLibArgs(Args, CmdArgs);
1102  }
1103  if (Sanitize.needsStatsRt()) {
1104  StringRef OS = isTargetMacOS() ? "osx" : "iossim";
1105  AddLinkRuntimeLib(Args, CmdArgs,
1106  (Twine("libclang_rt.stats_client_") + OS + ".a").str(),
1107  RLO_AlwaysLink);
1108  AddLinkSanitizerLibArgs(Args, CmdArgs, "stats");
1109  }
1110  if (Sanitize.needsEsanRt())
1111  AddLinkSanitizerLibArgs(Args, CmdArgs, "esan");
1112 
1113  // Otherwise link libSystem, then the dynamic runtime library, and finally any
1114  // target specific static runtime library.
1115  CmdArgs.push_back("-lSystem");
1116 
1117  // Select the dynamic runtime library and the target specific static library.
1118  if (isTargetWatchOSBased()) {
1119  // We currently always need a static runtime library for watchOS.
1120  AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.watchos.a");
1121  } else if (isTargetTvOSBased()) {
1122  // We currently always need a static runtime library for tvOS.
1123  AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.tvos.a");
1124  } else if (isTargetIOSBased()) {
1125  // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
1126  // it never went into the SDK.
1127  // Linking against libgcc_s.1 isn't needed for iOS 5.0+
1128  if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator() &&
1129  getTriple().getArch() != llvm::Triple::aarch64)
1130  CmdArgs.push_back("-lgcc_s.1");
1131 
1132  // We currently always need a static runtime library for iOS.
1133  AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.ios.a");
1134  } else {
1135  assert(isTargetMacOS() && "unexpected non MacOS platform");
1136  // The dynamic runtime library was merged with libSystem for 10.6 and
1137  // beyond; only 10.4 and 10.5 need an additional runtime library.
1138  if (isMacosxVersionLT(10, 5))
1139  CmdArgs.push_back("-lgcc_s.10.4");
1140  else if (isMacosxVersionLT(10, 6))
1141  CmdArgs.push_back("-lgcc_s.10.5");
1142 
1143  // Originally for OS X, we thought we would only need a static runtime
1144  // library when targeting 10.4, to provide versions of the static functions
1145  // which were omitted from 10.4.dylib. This led to the creation of the 10.4
1146  // builtins library.
1147  //
1148  // Unfortunately, that turned out to not be true, because Darwin system
1149  // headers can still use eprintf on i386, and it is not exported from
1150  // libSystem. Therefore, we still must provide a runtime library just for
1151  // the tiny tiny handful of projects that *might* use that symbol.
1152  //
1153  // Then over time, we figured out it was useful to add more things to the
1154  // runtime so we created libclang_rt.osx.a to provide new functions when
1155  // deploying to old OS builds, and for a long time we had both eprintf and
1156  // osx builtin libraries. Which just seems excessive. So with PR 28855, we
1157  // are removing the eprintf library and expecting eprintf to be provided by
1158  // the OS X builtins library.
1159  if (isMacosxVersionLT(10, 5))
1160  AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.10.4.a");
1161  else
1162  AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.osx.a");
1163  }
1164 }
1165 
1166 /// Returns the most appropriate macOS target version for the current process.
1167 ///
1168 /// If the macOS SDK version is the same or earlier than the system version,
1169 /// then the SDK version is returned. Otherwise the system version is returned.
1170 static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
1171  unsigned Major, Minor, Micro;
1172  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1173  if (!SystemTriple.isMacOSX())
1174  return MacOSSDKVersion;
1175  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1176  VersionTuple SystemVersion(Major, Minor, Micro);
1177  bool HadExtra;
1178  if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
1179  HadExtra))
1180  return MacOSSDKVersion;
1181  VersionTuple SDKVersion(Major, Minor, Micro);
1182  if (SDKVersion > SystemVersion)
1183  return SystemVersion.getAsString();
1184  return MacOSSDKVersion;
1185 }
1186 
1187 namespace {
1188 
1189 /// The Darwin OS that was selected or inferred from arguments / environment.
1190 struct DarwinPlatform {
1191  enum SourceKind {
1192  /// The OS was specified using the -target argument.
1193  TargetArg,
1194  /// The OS was specified using the -m<os>-version-min argument.
1195  OSVersionArg,
1196  /// The OS was specified using the OS_DEPLOYMENT_TARGET environment.
1197  DeploymentTargetEnv,
1198  /// The OS was inferred from the SDK.
1199  InferredFromSDK,
1200  /// The OS was inferred from the -arch.
1201  InferredFromArch
1202  };
1203 
1206 
1207  DarwinPlatformKind getPlatform() const { return Platform; }
1208 
1209  DarwinEnvironmentKind getEnvironment() const { return Environment; }
1210 
1211  void setEnvironment(DarwinEnvironmentKind Kind) {
1212  Environment = Kind;
1213  InferSimulatorFromArch = false;
1214  }
1215 
1216  StringRef getOSVersion() const {
1217  if (Kind == OSVersionArg)
1218  return Argument->getValue();
1219  return OSVersion;
1220  }
1221 
1222  void setOSVersion(StringRef S) {
1223  assert(Kind == TargetArg && "Unexpected kind!");
1224  OSVersion = S;
1225  }
1226 
1227  bool hasOSVersion() const { return HasOSVersion; }
1228 
1229  /// Returns true if the target OS was explicitly specified.
1230  bool isExplicitlySpecified() const { return Kind <= DeploymentTargetEnv; }
1231 
1232  /// Returns true if the simulator environment can be inferred from the arch.
1233  bool canInferSimulatorFromArch() const { return InferSimulatorFromArch; }
1234 
1235  /// Adds the -m<os>-version-min argument to the compiler invocation.
1236  void addOSVersionMinArgument(DerivedArgList &Args, const OptTable &Opts) {
1237  if (Argument)
1238  return;
1239  assert(Kind != TargetArg && Kind != OSVersionArg && "Invalid kind");
1240  options::ID Opt;
1241  switch (Platform) {
1242  case DarwinPlatformKind::MacOS:
1243  Opt = options::OPT_mmacosx_version_min_EQ;
1244  break;
1245  case DarwinPlatformKind::IPhoneOS:
1246  Opt = options::OPT_miphoneos_version_min_EQ;
1247  break;
1248  case DarwinPlatformKind::TvOS:
1249  Opt = options::OPT_mtvos_version_min_EQ;
1250  break;
1251  case DarwinPlatformKind::WatchOS:
1252  Opt = options::OPT_mwatchos_version_min_EQ;
1253  break;
1254  }
1255  Argument = Args.MakeJoinedArg(nullptr, Opts.getOption(Opt), OSVersion);
1256  Args.append(Argument);
1257  }
1258 
1259  /// Returns the OS version with the argument / environment variable that
1260  /// specified it.
1261  std::string getAsString(DerivedArgList &Args, const OptTable &Opts) {
1262  switch (Kind) {
1263  case TargetArg:
1264  case OSVersionArg:
1265  case InferredFromSDK:
1266  case InferredFromArch:
1267  assert(Argument && "OS version argument not yet inferred");
1268  return Argument->getAsString(Args);
1269  case DeploymentTargetEnv:
1270  return (llvm::Twine(EnvVarName) + "=" + OSVersion).str();
1271  }
1272  llvm_unreachable("Unsupported Darwin Source Kind");
1273  }
1274 
1275  static DarwinPlatform createFromTarget(const llvm::Triple &TT,
1276  StringRef OSVersion, Arg *A) {
1277  DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
1278  A);
1279  switch (TT.getEnvironment()) {
1280  case llvm::Triple::Simulator:
1281  Result.Environment = DarwinEnvironmentKind::Simulator;
1282  break;
1283  default:
1284  break;
1285  }
1286  unsigned Major, Minor, Micro;
1287  TT.getOSVersion(Major, Minor, Micro);
1288  if (Major == 0)
1289  Result.HasOSVersion = false;
1290  return Result;
1291  }
1292  static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
1293  Arg *A) {
1294  return DarwinPlatform(OSVersionArg, Platform, A);
1295  }
1296  static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
1297  StringRef EnvVarName,
1298  StringRef Value) {
1299  DarwinPlatform Result(DeploymentTargetEnv, Platform, Value);
1300  Result.EnvVarName = EnvVarName;
1301  return Result;
1302  }
1303  static DarwinPlatform createFromSDK(DarwinPlatformKind Platform,
1304  StringRef Value,
1305  bool IsSimulator = false) {
1306  DarwinPlatform Result(InferredFromSDK, Platform, Value);
1307  if (IsSimulator)
1308  Result.Environment = DarwinEnvironmentKind::Simulator;
1309  Result.InferSimulatorFromArch = false;
1310  return Result;
1311  }
1312  static DarwinPlatform createFromArch(llvm::Triple::OSType OS,
1313  StringRef Value) {
1314  return DarwinPlatform(InferredFromArch, getPlatformFromOS(OS), Value);
1315  }
1316 
1317 private:
1318  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, Arg *Argument)
1319  : Kind(Kind), Platform(Platform), Argument(Argument) {}
1320  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, StringRef Value,
1321  Arg *Argument = nullptr)
1322  : Kind(Kind), Platform(Platform), OSVersion(Value), Argument(Argument) {}
1323 
1324  static DarwinPlatformKind getPlatformFromOS(llvm::Triple::OSType OS) {
1325  switch (OS) {
1326  case llvm::Triple::Darwin:
1327  case llvm::Triple::MacOSX:
1328  return DarwinPlatformKind::MacOS;
1329  case llvm::Triple::IOS:
1330  return DarwinPlatformKind::IPhoneOS;
1331  case llvm::Triple::TvOS:
1332  return DarwinPlatformKind::TvOS;
1333  case llvm::Triple::WatchOS:
1334  return DarwinPlatformKind::WatchOS;
1335  default:
1336  llvm_unreachable("Unable to infer Darwin variant");
1337  }
1338  }
1339 
1340  SourceKind Kind;
1341  DarwinPlatformKind Platform;
1342  DarwinEnvironmentKind Environment = DarwinEnvironmentKind::NativeEnvironment;
1343  std::string OSVersion;
1344  bool HasOSVersion = true, InferSimulatorFromArch = true;
1345  Arg *Argument;
1346  StringRef EnvVarName;
1347 };
1348 
1349 /// Returns the deployment target that's specified using the -m<os>-version-min
1350 /// argument.
1352 getDeploymentTargetFromOSVersionArg(DerivedArgList &Args,
1353  const Driver &TheDriver) {
1354  Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
1355  Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ,
1356  options::OPT_mios_simulator_version_min_EQ);
1357  Arg *TvOSVersion =
1358  Args.getLastArg(options::OPT_mtvos_version_min_EQ,
1359  options::OPT_mtvos_simulator_version_min_EQ);
1360  Arg *WatchOSVersion =
1361  Args.getLastArg(options::OPT_mwatchos_version_min_EQ,
1362  options::OPT_mwatchos_simulator_version_min_EQ);
1363  if (OSXVersion) {
1364  if (iOSVersion || TvOSVersion || WatchOSVersion) {
1365  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1366  << OSXVersion->getAsString(Args)
1367  << (iOSVersion ? iOSVersion
1368  : TvOSVersion ? TvOSVersion : WatchOSVersion)
1369  ->getAsString(Args);
1370  }
1371  return DarwinPlatform::createOSVersionArg(Darwin::MacOS, OSXVersion);
1372  } else if (iOSVersion) {
1373  if (TvOSVersion || WatchOSVersion) {
1374  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1375  << iOSVersion->getAsString(Args)
1376  << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
1377  }
1378  return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
1379  } else if (TvOSVersion) {
1380  if (WatchOSVersion) {
1381  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1382  << TvOSVersion->getAsString(Args)
1383  << WatchOSVersion->getAsString(Args);
1384  }
1385  return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
1386  } else if (WatchOSVersion)
1387  return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
1388  return None;
1389 }
1390 
1391 /// Returns the deployment target that's specified using the
1392 /// OS_DEPLOYMENT_TARGET environment variable.
1394 getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
1395  const llvm::Triple &Triple) {
1396  std::string Targets[Darwin::LastDarwinPlatform + 1];
1397  const char *EnvVars[] = {
1398  "MACOSX_DEPLOYMENT_TARGET",
1399  "IPHONEOS_DEPLOYMENT_TARGET",
1400  "TVOS_DEPLOYMENT_TARGET",
1401  "WATCHOS_DEPLOYMENT_TARGET",
1402  };
1403  static_assert(llvm::array_lengthof(EnvVars) == Darwin::LastDarwinPlatform + 1,
1404  "Missing platform");
1405  for (const auto &I : llvm::enumerate(llvm::makeArrayRef(EnvVars))) {
1406  if (char *Env = ::getenv(I.value()))
1407  Targets[I.index()] = Env;
1408  }
1409 
1410  // Do not allow conflicts with the watchOS target.
1411  if (!Targets[Darwin::WatchOS].empty() &&
1412  (!Targets[Darwin::IPhoneOS].empty() || !Targets[Darwin::TvOS].empty())) {
1413  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1414  << "WATCHOS_DEPLOYMENT_TARGET"
1415  << (!Targets[Darwin::IPhoneOS].empty() ? "IPHONEOS_DEPLOYMENT_TARGET"
1416  : "TVOS_DEPLOYMENT_TARGET");
1417  }
1418 
1419  // Do not allow conflicts with the tvOS target.
1420  if (!Targets[Darwin::TvOS].empty() && !Targets[Darwin::IPhoneOS].empty()) {
1421  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1422  << "TVOS_DEPLOYMENT_TARGET"
1423  << "IPHONEOS_DEPLOYMENT_TARGET";
1424  }
1425 
1426  // Allow conflicts among OSX and iOS for historical reasons, but choose the
1427  // default platform.
1428  if (!Targets[Darwin::MacOS].empty() &&
1429  (!Targets[Darwin::IPhoneOS].empty() ||
1430  !Targets[Darwin::WatchOS].empty() || !Targets[Darwin::TvOS].empty())) {
1431  if (Triple.getArch() == llvm::Triple::arm ||
1432  Triple.getArch() == llvm::Triple::aarch64 ||
1433  Triple.getArch() == llvm::Triple::thumb)
1434  Targets[Darwin::MacOS] = "";
1435  else
1436  Targets[Darwin::IPhoneOS] = Targets[Darwin::WatchOS] =
1437  Targets[Darwin::TvOS] = "";
1438  }
1439 
1440  for (const auto &Target : llvm::enumerate(llvm::makeArrayRef(Targets))) {
1441  if (!Target.value().empty())
1442  return DarwinPlatform::createDeploymentTargetEnv(
1443  (Darwin::DarwinPlatformKind)Target.index(), EnvVars[Target.index()],
1444  Target.value());
1445  }
1446  return None;
1447 }
1448 
1449 /// Tries to infer the deployment target from the SDK specified by -isysroot
1450 /// (or SDKROOT).
1451 Optional<DarwinPlatform> inferDeploymentTargetFromSDK(DerivedArgList &Args) {
1452  const Arg *A = Args.getLastArg(options::OPT_isysroot);
1453  if (!A)
1454  return None;
1455  StringRef isysroot = A->getValue();
1456  StringRef SDK = Darwin::getSDKName(isysroot);
1457  if (!SDK.size())
1458  return None;
1459  // Slice the version number out.
1460  // Version number is between the first and the last number.
1461  size_t StartVer = SDK.find_first_of("0123456789");
1462  size_t EndVer = SDK.find_last_of("0123456789");
1463  if (StartVer != StringRef::npos && EndVer > StartVer) {
1464  StringRef Version = SDK.slice(StartVer, EndVer + 1);
1465  if (SDK.startswith("iPhoneOS") || SDK.startswith("iPhoneSimulator"))
1466  return DarwinPlatform::createFromSDK(
1467  Darwin::IPhoneOS, Version,
1468  /*IsSimulator=*/SDK.startswith("iPhoneSimulator"));
1469  else if (SDK.startswith("MacOSX"))
1470  return DarwinPlatform::createFromSDK(Darwin::MacOS,
1471  getSystemOrSDKMacOSVersion(Version));
1472  else if (SDK.startswith("WatchOS") || SDK.startswith("WatchSimulator"))
1473  return DarwinPlatform::createFromSDK(
1474  Darwin::WatchOS, Version,
1475  /*IsSimulator=*/SDK.startswith("WatchSimulator"));
1476  else if (SDK.startswith("AppleTVOS") || SDK.startswith("AppleTVSimulator"))
1477  return DarwinPlatform::createFromSDK(
1478  Darwin::TvOS, Version,
1479  /*IsSimulator=*/SDK.startswith("AppleTVSimulator"));
1480  }
1481  return None;
1482 }
1483 
1484 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
1485  const Driver &TheDriver) {
1486  unsigned Major, Minor, Micro;
1487  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1488  switch (OS) {
1489  case llvm::Triple::Darwin:
1490  case llvm::Triple::MacOSX:
1491  // If there is no version specified on triple, and both host and target are
1492  // macos, use the host triple to infer OS version.
1493  if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
1494  !Triple.getOSMajorVersion())
1495  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1496  else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
1497  TheDriver.Diag(diag::err_drv_invalid_darwin_version)
1498  << Triple.getOSName();
1499  break;
1500  case llvm::Triple::IOS:
1501  Triple.getiOSVersion(Major, Minor, Micro);
1502  break;
1503  case llvm::Triple::TvOS:
1504  Triple.getOSVersion(Major, Minor, Micro);
1505  break;
1506  case llvm::Triple::WatchOS:
1507  Triple.getWatchOSVersion(Major, Minor, Micro);
1508  break;
1509  default:
1510  llvm_unreachable("Unexpected OS type");
1511  break;
1512  }
1513 
1514  std::string OSVersion;
1515  llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
1516  return OSVersion;
1517 }
1518 
1519 /// Tries to infer the target OS from the -arch.
1521 inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
1522  const llvm::Triple &Triple,
1523  const Driver &TheDriver) {
1524  llvm::Triple::OSType OSTy = llvm::Triple::UnknownOS;
1525 
1526  StringRef MachOArchName = Toolchain.getMachOArchName(Args);
1527  if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
1528  MachOArchName == "arm64")
1529  OSTy = llvm::Triple::IOS;
1530  else if (MachOArchName == "armv7k")
1531  OSTy = llvm::Triple::WatchOS;
1532  else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
1533  MachOArchName != "armv7em")
1534  OSTy = llvm::Triple::MacOSX;
1535 
1536  if (OSTy == llvm::Triple::UnknownOS)
1537  return None;
1538  return DarwinPlatform::createFromArch(OSTy,
1539  getOSVersion(OSTy, Triple, TheDriver));
1540 }
1541 
1542 /// Returns the deployment target that's specified using the -target option.
1543 Optional<DarwinPlatform> getDeploymentTargetFromTargetArg(
1544  DerivedArgList &Args, const llvm::Triple &Triple, const Driver &TheDriver) {
1545  if (!Args.hasArg(options::OPT_target))
1546  return None;
1547  if (Triple.getOS() == llvm::Triple::Darwin ||
1548  Triple.getOS() == llvm::Triple::UnknownOS)
1549  return None;
1550  std::string OSVersion = getOSVersion(Triple.getOS(), Triple, TheDriver);
1551  return DarwinPlatform::createFromTarget(Triple, OSVersion,
1552  Args.getLastArg(options::OPT_target));
1553 }
1554 
1555 } // namespace
1556 
1557 void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
1558  const OptTable &Opts = getDriver().getOpts();
1559 
1560  // Support allowing the SDKROOT environment variable used by xcrun and other
1561  // Xcode tools to define the default sysroot, by making it the default for
1562  // isysroot.
1563  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1564  // Warn if the path does not exist.
1565  if (!getVFS().exists(A->getValue()))
1566  getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
1567  } else {
1568  if (char *env = ::getenv("SDKROOT")) {
1569  // We only use this value as the default if it is an absolute path,
1570  // exists, and it is not the root path.
1571  if (llvm::sys::path::is_absolute(env) && getVFS().exists(env) &&
1572  StringRef(env) != "/") {
1573  Args.append(Args.MakeSeparateArg(
1574  nullptr, Opts.getOption(options::OPT_isysroot), env));
1575  }
1576  }
1577  }
1578 
1579  // The OS and the version can be specified using the -target argument.
1580  Optional<DarwinPlatform> OSTarget =
1581  getDeploymentTargetFromTargetArg(Args, getTriple(), getDriver());
1582  if (OSTarget) {
1583  Optional<DarwinPlatform> OSVersionArgTarget =
1584  getDeploymentTargetFromOSVersionArg(Args, getDriver());
1585  if (OSVersionArgTarget) {
1586  unsigned TargetMajor, TargetMinor, TargetMicro;
1587  bool TargetExtra;
1588  unsigned ArgMajor, ArgMinor, ArgMicro;
1589  bool ArgExtra;
1590  if (OSTarget->getPlatform() != OSVersionArgTarget->getPlatform() ||
1591  (Driver::GetReleaseVersion(OSTarget->getOSVersion(), TargetMajor,
1592  TargetMinor, TargetMicro, TargetExtra) &&
1593  Driver::GetReleaseVersion(OSVersionArgTarget->getOSVersion(),
1594  ArgMajor, ArgMinor, ArgMicro, ArgExtra) &&
1595  (VersionTuple(TargetMajor, TargetMinor, TargetMicro) !=
1596  VersionTuple(ArgMajor, ArgMinor, ArgMicro) ||
1597  TargetExtra != ArgExtra))) {
1598  // Select the OS version from the -m<os>-version-min argument when
1599  // the -target does not include an OS version.
1600  if (OSTarget->getPlatform() == OSVersionArgTarget->getPlatform() &&
1601  !OSTarget->hasOSVersion()) {
1602  OSTarget->setOSVersion(OSVersionArgTarget->getOSVersion());
1603  } else {
1604  // Warn about -m<os>-version-min that doesn't match the OS version
1605  // that's specified in the target.
1606  std::string OSVersionArg =
1607  OSVersionArgTarget->getAsString(Args, Opts);
1608  std::string TargetArg = OSTarget->getAsString(Args, Opts);
1609  getDriver().Diag(clang::diag::warn_drv_overriding_flag_option)
1610  << OSVersionArg << TargetArg;
1611  }
1612  }
1613  }
1614  } else {
1615  // The OS target can be specified using the -m<os>version-min argument.
1616  OSTarget = getDeploymentTargetFromOSVersionArg(Args, getDriver());
1617  // If no deployment target was specified on the command line, check for
1618  // environment defines.
1619  if (!OSTarget) {
1620  OSTarget =
1621  getDeploymentTargetFromEnvironmentVariables(getDriver(), getTriple());
1622  if (OSTarget) {
1623  // Don't infer simulator from the arch when the SDK is also specified.
1624  Optional<DarwinPlatform> SDKTarget = inferDeploymentTargetFromSDK(Args);
1625  if (SDKTarget)
1626  OSTarget->setEnvironment(SDKTarget->getEnvironment());
1627  }
1628  }
1629  // If there is no command-line argument to specify the Target version and
1630  // no environment variable defined, see if we can set the default based
1631  // on -isysroot.
1632  if (!OSTarget)
1633  OSTarget = inferDeploymentTargetFromSDK(Args);
1634  // If no OS targets have been specified, try to guess platform from -target
1635  // or arch name and compute the version from the triple.
1636  if (!OSTarget)
1637  OSTarget =
1638  inferDeploymentTargetFromArch(Args, *this, getTriple(), getDriver());
1639  }
1640 
1641  assert(OSTarget && "Unable to infer Darwin variant");
1642  OSTarget->addOSVersionMinArgument(Args, Opts);
1643  DarwinPlatformKind Platform = OSTarget->getPlatform();
1644 
1645  unsigned Major, Minor, Micro;
1646  bool HadExtra;
1647  // Set the tool chain target information.
1648  if (Platform == MacOS) {
1649  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1650  Micro, HadExtra) ||
1651  HadExtra || Major != 10 || Minor >= 100 || Micro >= 100)
1652  getDriver().Diag(diag::err_drv_invalid_version_number)
1653  << OSTarget->getAsString(Args, Opts);
1654  } else if (Platform == IPhoneOS) {
1655  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1656  Micro, HadExtra) ||
1657  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1658  getDriver().Diag(diag::err_drv_invalid_version_number)
1659  << OSTarget->getAsString(Args, Opts);
1660  ;
1661  // For 32-bit targets, the deployment target for iOS has to be earlier than
1662  // iOS 11.
1663  if (getTriple().isArch32Bit() && Major >= 11) {
1664  // If the deployment target is explicitly specified, print a diagnostic.
1665  if (OSTarget->isExplicitlySpecified()) {
1666  getDriver().Diag(diag::warn_invalid_ios_deployment_target)
1667  << OSTarget->getAsString(Args, Opts);
1668  // Otherwise, set it to 10.99.99.
1669  } else {
1670  Major = 10;
1671  Minor = 99;
1672  Micro = 99;
1673  }
1674  }
1675  } else if (Platform == TvOS) {
1676  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1677  Micro, HadExtra) ||
1678  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1679  getDriver().Diag(diag::err_drv_invalid_version_number)
1680  << OSTarget->getAsString(Args, Opts);
1681  } else if (Platform == WatchOS) {
1682  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1683  Micro, HadExtra) ||
1684  HadExtra || Major >= 10 || Minor >= 100 || Micro >= 100)
1685  getDriver().Diag(diag::err_drv_invalid_version_number)
1686  << OSTarget->getAsString(Args, Opts);
1687  } else
1688  llvm_unreachable("unknown kind of Darwin platform");
1689 
1690  DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
1691  // Recognize iOS targets with an x86 architecture as the iOS simulator.
1692  if (Environment == NativeEnvironment && Platform != MacOS &&
1693  OSTarget->canInferSimulatorFromArch() &&
1694  (getTriple().getArch() == llvm::Triple::x86 ||
1695  getTriple().getArch() == llvm::Triple::x86_64))
1696  Environment = Simulator;
1697 
1698  setTarget(Platform, Environment, Major, Minor, Micro);
1699 
1700  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1701  StringRef SDK = getSDKName(A->getValue());
1702  if (SDK.size() > 0) {
1703  size_t StartVer = SDK.find_first_of("0123456789");
1704  StringRef SDKName = SDK.slice(0, StartVer);
1705  if (!SDKName.startswith(getPlatformFamily()))
1706  getDriver().Diag(diag::warn_incompatible_sysroot)
1707  << SDKName << getPlatformFamily();
1708  }
1709  }
1710 }
1711 
1712 void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
1713  ArgStringList &CmdArgs) const {
1715 
1716  switch (Type) {
1717  case ToolChain::CST_Libcxx:
1718  CmdArgs.push_back("-lc++");
1719  break;
1720 
1722  // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
1723  // it was previously found in the gcc lib dir. However, for all the Darwin
1724  // platforms we care about it was -lstdc++.6, so we search for that
1725  // explicitly if we can't see an obvious -lstdc++ candidate.
1726 
1727  // Check in the sysroot first.
1728  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1729  SmallString<128> P(A->getValue());
1730  llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
1731 
1732  if (!getVFS().exists(P)) {
1733  llvm::sys::path::remove_filename(P);
1734  llvm::sys::path::append(P, "libstdc++.6.dylib");
1735  if (getVFS().exists(P)) {
1736  CmdArgs.push_back(Args.MakeArgString(P));
1737  return;
1738  }
1739  }
1740  }
1741 
1742  // Otherwise, look in the root.
1743  // FIXME: This should be removed someday when we don't have to care about
1744  // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
1745  if (!getVFS().exists("/usr/lib/libstdc++.dylib") &&
1746  getVFS().exists("/usr/lib/libstdc++.6.dylib")) {
1747  CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
1748  return;
1749  }
1750 
1751  // Otherwise, let the linker search.
1752  CmdArgs.push_back("-lstdc++");
1753  break;
1754  }
1755 }
1756 
1757 void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
1758  ArgStringList &CmdArgs) const {
1759  // For Darwin platforms, use the compiler-rt-based support library
1760  // instead of the gcc-provided one (which is also incidentally
1761  // only present in the gcc lib dir, which makes it hard to find).
1762 
1763  SmallString<128> P(getDriver().ResourceDir);
1764  llvm::sys::path::append(P, "lib", "darwin");
1765 
1766  // Use the newer cc_kext for iOS ARM after 6.0.
1767  if (isTargetWatchOS()) {
1768  llvm::sys::path::append(P, "libclang_rt.cc_kext_watchos.a");
1769  } else if (isTargetTvOS()) {
1770  llvm::sys::path::append(P, "libclang_rt.cc_kext_tvos.a");
1771  } else if (isTargetIPhoneOS()) {
1772  llvm::sys::path::append(P, "libclang_rt.cc_kext_ios.a");
1773  } else {
1774  llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
1775  }
1776 
1777  // For now, allow missing resource libraries to support developers who may
1778  // not have compiler-rt checked out or integrated into their build.
1779  if (getVFS().exists(P))
1780  CmdArgs.push_back(Args.MakeArgString(P));
1781 }
1782 
1783 DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
1784  StringRef BoundArch,
1785  Action::OffloadKind) const {
1786  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
1787  const OptTable &Opts = getDriver().getOpts();
1788 
1789  // FIXME: We really want to get out of the tool chain level argument
1790  // translation business, as it makes the driver functionality much
1791  // more opaque. For now, we follow gcc closely solely for the
1792  // purpose of easily achieving feature parity & testability. Once we
1793  // have something that works, we should reevaluate each translation
1794  // and try to push it down into tool specific logic.
1795 
1796  for (Arg *A : Args) {
1797  if (A->getOption().matches(options::OPT_Xarch__)) {
1798  // Skip this argument unless the architecture matches either the toolchain
1799  // triple arch, or the arch being bound.
1800  llvm::Triple::ArchType XarchArch =
1802  if (!(XarchArch == getArch() ||
1803  (!BoundArch.empty() &&
1804  XarchArch ==
1806  continue;
1807 
1808  Arg *OriginalArg = A;
1809  unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
1810  unsigned Prev = Index;
1811  std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
1812 
1813  // If the argument parsing failed or more than one argument was
1814  // consumed, the -Xarch_ argument's parameter tried to consume
1815  // extra arguments. Emit an error and ignore.
1816  //
1817  // We also want to disallow any options which would alter the
1818  // driver behavior; that isn't going to work in our model. We
1819  // use isDriverOption() as an approximation, although things
1820  // like -O4 are going to slip through.
1821  if (!XarchArg || Index > Prev + 1) {
1822  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
1823  << A->getAsString(Args);
1824  continue;
1825  } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
1826  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
1827  << A->getAsString(Args);
1828  continue;
1829  }
1830 
1831  XarchArg->setBaseArg(A);
1832 
1833  A = XarchArg.release();
1834  DAL->AddSynthesizedArg(A);
1835 
1836  // Linker input arguments require custom handling. The problem is that we
1837  // have already constructed the phase actions, so we can not treat them as
1838  // "input arguments".
1839  if (A->getOption().hasFlag(options::LinkerInput)) {
1840  // Convert the argument into individual Zlinker_input_args.
1841  for (const char *Value : A->getValues()) {
1842  DAL->AddSeparateArg(
1843  OriginalArg, Opts.getOption(options::OPT_Zlinker_input), Value);
1844  }
1845  continue;
1846  }
1847  }
1848 
1849  // Sob. These is strictly gcc compatible for the time being. Apple
1850  // gcc translates options twice, which means that self-expanding
1851  // options add duplicates.
1852  switch ((options::ID)A->getOption().getID()) {
1853  default:
1854  DAL->append(A);
1855  break;
1856 
1857  case options::OPT_mkernel:
1858  case options::OPT_fapple_kext:
1859  DAL->append(A);
1860  DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
1861  break;
1862 
1863  case options::OPT_dependency_file:
1864  DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), A->getValue());
1865  break;
1866 
1867  case options::OPT_gfull:
1868  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1869  DAL->AddFlagArg(
1870  A, Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
1871  break;
1872 
1873  case options::OPT_gused:
1874  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1875  DAL->AddFlagArg(
1876  A, Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
1877  break;
1878 
1879  case options::OPT_shared:
1880  DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
1881  break;
1882 
1883  case options::OPT_fconstant_cfstrings:
1884  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
1885  break;
1886 
1887  case options::OPT_fno_constant_cfstrings:
1888  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
1889  break;
1890 
1891  case options::OPT_Wnonportable_cfstrings:
1892  DAL->AddFlagArg(A,
1893  Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
1894  break;
1895 
1896  case options::OPT_Wno_nonportable_cfstrings:
1897  DAL->AddFlagArg(
1898  A, Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
1899  break;
1900 
1901  case options::OPT_fpascal_strings:
1902  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
1903  break;
1904 
1905  case options::OPT_fno_pascal_strings:
1906  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
1907  break;
1908  }
1909  }
1910 
1911  if (getTriple().getArch() == llvm::Triple::x86 ||
1912  getTriple().getArch() == llvm::Triple::x86_64)
1913  if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
1914  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
1915  "core2");
1916 
1917  // Add the arch options based on the particular spelling of -arch, to match
1918  // how the driver driver works.
1919  if (!BoundArch.empty()) {
1920  StringRef Name = BoundArch;
1921  const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
1922  const Option MArch = Opts.getOption(clang::driver::options::OPT_march_EQ);
1923 
1924  // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
1925  // which defines the list of which architectures we accept.
1926  if (Name == "ppc")
1927  ;
1928  else if (Name == "ppc601")
1929  DAL->AddJoinedArg(nullptr, MCpu, "601");
1930  else if (Name == "ppc603")
1931  DAL->AddJoinedArg(nullptr, MCpu, "603");
1932  else if (Name == "ppc604")
1933  DAL->AddJoinedArg(nullptr, MCpu, "604");
1934  else if (Name == "ppc604e")
1935  DAL->AddJoinedArg(nullptr, MCpu, "604e");
1936  else if (Name == "ppc750")
1937  DAL->AddJoinedArg(nullptr, MCpu, "750");
1938  else if (Name == "ppc7400")
1939  DAL->AddJoinedArg(nullptr, MCpu, "7400");
1940  else if (Name == "ppc7450")
1941  DAL->AddJoinedArg(nullptr, MCpu, "7450");
1942  else if (Name == "ppc970")
1943  DAL->AddJoinedArg(nullptr, MCpu, "970");
1944 
1945  else if (Name == "ppc64" || Name == "ppc64le")
1946  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
1947 
1948  else if (Name == "i386")
1949  ;
1950  else if (Name == "i486")
1951  DAL->AddJoinedArg(nullptr, MArch, "i486");
1952  else if (Name == "i586")
1953  DAL->AddJoinedArg(nullptr, MArch, "i586");
1954  else if (Name == "i686")
1955  DAL->AddJoinedArg(nullptr, MArch, "i686");
1956  else if (Name == "pentium")
1957  DAL->AddJoinedArg(nullptr, MArch, "pentium");
1958  else if (Name == "pentium2")
1959  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
1960  else if (Name == "pentpro")
1961  DAL->AddJoinedArg(nullptr, MArch, "pentiumpro");
1962  else if (Name == "pentIIm3")
1963  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
1964 
1965  else if (Name == "x86_64")
1966  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
1967  else if (Name == "x86_64h") {
1968  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
1969  DAL->AddJoinedArg(nullptr, MArch, "x86_64h");
1970  }
1971 
1972  else if (Name == "arm")
1973  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
1974  else if (Name == "armv4t")
1975  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
1976  else if (Name == "armv5")
1977  DAL->AddJoinedArg(nullptr, MArch, "armv5tej");
1978  else if (Name == "xscale")
1979  DAL->AddJoinedArg(nullptr, MArch, "xscale");
1980  else if (Name == "armv6")
1981  DAL->AddJoinedArg(nullptr, MArch, "armv6k");
1982  else if (Name == "armv6m")
1983  DAL->AddJoinedArg(nullptr, MArch, "armv6m");
1984  else if (Name == "armv7")
1985  DAL->AddJoinedArg(nullptr, MArch, "armv7a");
1986  else if (Name == "armv7em")
1987  DAL->AddJoinedArg(nullptr, MArch, "armv7em");
1988  else if (Name == "armv7k")
1989  DAL->AddJoinedArg(nullptr, MArch, "armv7k");
1990  else if (Name == "armv7m")
1991  DAL->AddJoinedArg(nullptr, MArch, "armv7m");
1992  else if (Name == "armv7s")
1993  DAL->AddJoinedArg(nullptr, MArch, "armv7s");
1994  }
1995 
1996  return DAL;
1997 }
1998 
1999 void MachO::AddLinkRuntimeLibArgs(const ArgList &Args,
2000  ArgStringList &CmdArgs) const {
2001  // Embedded targets are simple at the moment, not supporting sanitizers and
2002  // with different libraries for each member of the product { static, PIC } x
2003  // { hard-float, soft-float }
2004  llvm::SmallString<32> CompilerRT = StringRef("libclang_rt.");
2005  CompilerRT +=
2007  ? "hard"
2008  : "soft";
2009  CompilerRT += Args.hasArg(options::OPT_fPIC) ? "_pic.a" : "_static.a";
2010 
2011  AddLinkRuntimeLib(Args, CmdArgs, CompilerRT, RLO_IsEmbedded);
2012 }
2013 
2015  llvm::Triple::OSType OS;
2016 
2017  switch (TargetPlatform) {
2018  case MacOS: // Earlier than 10.13.
2019  OS = llvm::Triple::MacOSX;
2020  break;
2021  case IPhoneOS:
2022  OS = llvm::Triple::IOS;
2023  break;
2024  case TvOS: // Earlier than 11.0.
2025  OS = llvm::Triple::TvOS;
2026  break;
2027  case WatchOS: // Earlier than 4.0.
2028  OS = llvm::Triple::WatchOS;
2029  break;
2030  }
2031 
2033 }
2034 
2035 void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
2036  llvm::opt::ArgStringList &CC1Args,
2037  Action::OffloadKind DeviceOffloadKind) const {
2038  // Pass "-faligned-alloc-unavailable" only when the user hasn't manually
2039  // enabled or disabled aligned allocations.
2040  if (!DriverArgs.hasArgNoClaim(options::OPT_faligned_allocation,
2041  options::OPT_fno_aligned_allocation) &&
2043  CC1Args.push_back("-faligned-alloc-unavailable");
2044 }
2045 
2046 DerivedArgList *
2047 Darwin::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
2048  Action::OffloadKind DeviceOffloadKind) const {
2049  // First get the generic Apple args, before moving onto Darwin-specific ones.
2050  DerivedArgList *DAL =
2051  MachO::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
2052  const OptTable &Opts = getDriver().getOpts();
2053 
2054  // If no architecture is bound, none of the translations here are relevant.
2055  if (BoundArch.empty())
2056  return DAL;
2057 
2058  // Add an explicit version min argument for the deployment target. We do this
2059  // after argument translation because -Xarch_ arguments may add a version min
2060  // argument.
2061  AddDeploymentTarget(*DAL);
2062 
2063  // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
2064  // FIXME: It would be far better to avoid inserting those -static arguments,
2065  // but we can't check the deployment target in the translation code until
2066  // it is set here.
2067  if (isTargetWatchOSBased() ||
2068  (isTargetIOSBased() && !isIPhoneOSVersionLT(6, 0))) {
2069  for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
2070  Arg *A = *it;
2071  ++it;
2072  if (A->getOption().getID() != options::OPT_mkernel &&
2073  A->getOption().getID() != options::OPT_fapple_kext)
2074  continue;
2075  assert(it != ie && "unexpected argument translation");
2076  A = *it;
2077  assert(A->getOption().getID() == options::OPT_static &&
2078  "missing expected -static argument");
2079  *it = nullptr;
2080  ++it;
2081  }
2082  }
2083 
2084  if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
2086  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
2087  "libc++");
2088 
2089  // Validate the C++ standard library choice.
2091  if (Type == ToolChain::CST_Libcxx) {
2092  // Check whether the target provides libc++.
2093  StringRef where;
2094 
2095  // Complain about targeting iOS < 5.0 in any way.
2096  if (isTargetIOSBased() && isIPhoneOSVersionLT(5, 0))
2097  where = "iOS 5.0";
2098 
2099  if (where != StringRef()) {
2100  getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) << where;
2101  }
2102  }
2103 
2104  auto Arch = tools::darwin::getArchTypeForMachOArchName(BoundArch);
2105  if ((Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)) {
2106  if (Args.hasFlag(options::OPT_fomit_frame_pointer,
2107  options::OPT_fno_omit_frame_pointer, false))
2108  getDriver().Diag(clang::diag::warn_drv_unsupported_opt_for_target)
2109  << "-fomit-frame-pointer" << BoundArch;
2110  }
2111 
2112  return DAL;
2113 }
2114 
2115 bool MachO::IsUnwindTablesDefault(const ArgList &Args) const {
2116  // Unwind tables are not emitted if -fno-exceptions is supplied (except when
2117  // targeting x86_64).
2118  return getArch() == llvm::Triple::x86_64 ||
2119  (GetExceptionModel(Args) != llvm::ExceptionHandling::SjLj &&
2120  Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
2121  true));
2122 }
2123 
2125  if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
2126  return S[0] != '\0';
2127  return false;
2128 }
2129 
2130 llvm::ExceptionHandling Darwin::GetExceptionModel(const ArgList &Args) const {
2131  // Darwin uses SjLj exceptions on ARM.
2132  if (getTriple().getArch() != llvm::Triple::arm &&
2133  getTriple().getArch() != llvm::Triple::thumb)
2134  return llvm::ExceptionHandling::None;
2135 
2136  // Only watchOS uses the new DWARF/Compact unwinding method.
2137  llvm::Triple Triple(ComputeLLVMTriple(Args));
2138  if(Triple.isWatchABI())
2139  return llvm::ExceptionHandling::DwarfCFI;
2140 
2141  return llvm::ExceptionHandling::SjLj;
2142 }
2143 
2145  assert(TargetInitialized && "Target not initialized!");
2146  if (isTargetIPhoneOS() && isIPhoneOSVersionLT(6, 0))
2147  return false;
2148  return true;
2149 }
2150 
2151 bool MachO::isPICDefault() const { return true; }
2152 
2153 bool MachO::isPIEDefault() const { return false; }
2154 
2156  return (getArch() == llvm::Triple::x86_64 ||
2157  getArch() == llvm::Triple::aarch64);
2158 }
2159 
2161  // Profiling instrumentation is only supported on x86.
2162  return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
2163 }
2164 
2165 void Darwin::addMinVersionArgs(const ArgList &Args,
2166  ArgStringList &CmdArgs) const {
2167  VersionTuple TargetVersion = getTargetVersion();
2168 
2169  if (isTargetWatchOS())
2170  CmdArgs.push_back("-watchos_version_min");
2171  else if (isTargetWatchOSSimulator())
2172  CmdArgs.push_back("-watchos_simulator_version_min");
2173  else if (isTargetTvOS())
2174  CmdArgs.push_back("-tvos_version_min");
2175  else if (isTargetTvOSSimulator())
2176  CmdArgs.push_back("-tvos_simulator_version_min");
2177  else if (isTargetIOSSimulator())
2178  CmdArgs.push_back("-ios_simulator_version_min");
2179  else if (isTargetIOSBased())
2180  CmdArgs.push_back("-iphoneos_version_min");
2181  else {
2182  assert(isTargetMacOS() && "unexpected target");
2183  CmdArgs.push_back("-macosx_version_min");
2184  }
2185 
2186  CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
2187 }
2188 
2189 void Darwin::addStartObjectFileArgs(const ArgList &Args,
2190  ArgStringList &CmdArgs) const {
2191  // Derived from startfile spec.
2192  if (Args.hasArg(options::OPT_dynamiclib)) {
2193  // Derived from darwin_dylib1 spec.
2194  if (isTargetWatchOSBased()) {
2195  ; // watchOS does not need dylib1.o.
2196  } else if (isTargetIOSSimulator()) {
2197  ; // iOS simulator does not need dylib1.o.
2198  } else if (isTargetIPhoneOS()) {
2199  if (isIPhoneOSVersionLT(3, 1))
2200  CmdArgs.push_back("-ldylib1.o");
2201  } else {
2202  if (isMacosxVersionLT(10, 5))
2203  CmdArgs.push_back("-ldylib1.o");
2204  else if (isMacosxVersionLT(10, 6))
2205  CmdArgs.push_back("-ldylib1.10.5.o");
2206  }
2207  } else {
2208  if (Args.hasArg(options::OPT_bundle)) {
2209  if (!Args.hasArg(options::OPT_static)) {
2210  // Derived from darwin_bundle1 spec.
2211  if (isTargetWatchOSBased()) {
2212  ; // watchOS does not need bundle1.o.
2213  } else if (isTargetIOSSimulator()) {
2214  ; // iOS simulator does not need bundle1.o.
2215  } else if (isTargetIPhoneOS()) {
2216  if (isIPhoneOSVersionLT(3, 1))
2217  CmdArgs.push_back("-lbundle1.o");
2218  } else {
2219  if (isMacosxVersionLT(10, 6))
2220  CmdArgs.push_back("-lbundle1.o");
2221  }
2222  }
2223  } else {
2224  if (Args.hasArg(options::OPT_pg) && SupportsProfiling()) {
2225  if (Args.hasArg(options::OPT_static) ||
2226  Args.hasArg(options::OPT_object) ||
2227  Args.hasArg(options::OPT_preload)) {
2228  CmdArgs.push_back("-lgcrt0.o");
2229  } else {
2230  CmdArgs.push_back("-lgcrt1.o");
2231 
2232  // darwin_crt2 spec is empty.
2233  }
2234  // By default on OS X 10.8 and later, we don't link with a crt1.o
2235  // file and the linker knows to use _main as the entry point. But,
2236  // when compiling with -pg, we need to link with the gcrt1.o file,
2237  // so pass the -no_new_main option to tell the linker to use the
2238  // "start" symbol as the entry point.
2239  if (isTargetMacOS() && !isMacosxVersionLT(10, 8))
2240  CmdArgs.push_back("-no_new_main");
2241  } else {
2242  if (Args.hasArg(options::OPT_static) ||
2243  Args.hasArg(options::OPT_object) ||
2244  Args.hasArg(options::OPT_preload)) {
2245  CmdArgs.push_back("-lcrt0.o");
2246  } else {
2247  // Derived from darwin_crt1 spec.
2248  if (isTargetWatchOSBased()) {
2249  ; // watchOS does not need crt1.o.
2250  } else if (isTargetIOSSimulator()) {
2251  ; // iOS simulator does not need crt1.o.
2252  } else if (isTargetIPhoneOS()) {
2253  if (getArch() == llvm::Triple::aarch64)
2254  ; // iOS does not need any crt1 files for arm64
2255  else if (isIPhoneOSVersionLT(3, 1))
2256  CmdArgs.push_back("-lcrt1.o");
2257  else if (isIPhoneOSVersionLT(6, 0))
2258  CmdArgs.push_back("-lcrt1.3.1.o");
2259  } else {
2260  if (isMacosxVersionLT(10, 5))
2261  CmdArgs.push_back("-lcrt1.o");
2262  else if (isMacosxVersionLT(10, 6))
2263  CmdArgs.push_back("-lcrt1.10.5.o");
2264  else if (isMacosxVersionLT(10, 8))
2265  CmdArgs.push_back("-lcrt1.10.6.o");
2266 
2267  // darwin_crt2 spec is empty.
2268  }
2269  }
2270  }
2271  }
2272  }
2273 
2274  if (!isTargetIPhoneOS() && Args.hasArg(options::OPT_shared_libgcc) &&
2275  !isTargetWatchOS() &&
2276  isMacosxVersionLT(10, 5)) {
2277  const char *Str = Args.MakeArgString(GetFilePath("crt3.o"));
2278  CmdArgs.push_back(Str);
2279  }
2280 }
2281 
2282 void Darwin::CheckObjCARC() const {
2284  (isTargetMacOS() && !isMacosxVersionLT(10, 6)))
2285  return;
2286  getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
2287 }
2288 
2290  const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
2292  Res |= SanitizerKind::Address;
2293  Res |= SanitizerKind::Leak;
2294  Res |= SanitizerKind::Fuzzer;
2295  Res |= SanitizerKind::FuzzerNoLink;
2296  Res |= SanitizerKind::Function;
2297  if (isTargetMacOS()) {
2298  if (!isMacosxVersionLT(10, 9))
2299  Res |= SanitizerKind::Vptr;
2300  Res |= SanitizerKind::SafeStack;
2301  if (IsX86_64)
2302  Res |= SanitizerKind::Thread;
2303  } else if (isTargetIOSSimulator() || isTargetTvOSSimulator()) {
2304  if (IsX86_64)
2305  Res |= SanitizerKind::Thread;
2306  }
2307  return Res;
2308 }
2309 
2310 void Darwin::printVerboseInfo(raw_ostream &OS) const {
2311  CudaInstallation.print(OS);
2312 }
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:4450
StringRef getMachOArchName(const llvm::opt::ArgList &Args) const
Get the "MachO" arch name for a particular compiler invocation.
Definition: Darwin.cpp:780
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:505
bool SupportsEmbeddedBitcode() const override
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: Darwin.cpp:2144
bool isMacosxVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:406
Tool * buildAssembler() const override
Definition: Darwin.cpp:851
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:4247
Link the library in even if it can&#39;t be found in the VFS.
Definition: Darwin.h:178
Use the embedded runtime from the macho_embedded directory.
Definition: Darwin.h:181
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:55
bool UseDwarfDebugFlags() const override
UseDwarfDebugFlags - Embed the compile options to clang into the Dwarf compile unit information...
Definition: Darwin.cpp:2124
StringRef P
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:519
Defines types useful for describing an Objective-C runtime.
CXXStdlibType GetDefaultCXXStdlibType() const override
Definition: Darwin.cpp:702
The base class of the type hierarchy.
Definition: Type.h:1413
bool HasNativeLLVMSupport() const override
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: Darwin.cpp:700
bool embedBitcodeEnabled() const
Definition: Driver.h:332
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:110
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:421
void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add any profiling runtime libraries that are needed.
Definition: Darwin.cpp:1021
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
DarwinEnvironmentKind TargetEnvironment
Definition: Darwin.h:281
CudaInstallationDetector CudaInstallation
Definition: Darwin.h:286
bool TargetInitialized
Whether the information on the target has been initialized.
Definition: Darwin.h:266
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:272
bool hasBlocksRuntime() const override
Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
Definition: Darwin.cpp:724
types::ID LookupTypeForExtension(StringRef Ext) const override
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: Darwin.cpp:690
&#39;macosx-fragile&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the fragil...
Definition: ObjCRuntime.h:40
const char * getFilename() const
Definition: InputInfo.h:84
path_list & getProgramPaths()
Definition: ToolChain.h:219
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Darwin.cpp:2153
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:334
ActionList & getInputs()
Definition: Action.h:142
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: Darwin.cpp:2115
StringRef getPlatformFamily() const
Definition: Darwin.cpp:959
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:121
Darwin - The base Darwin tool chain.
Definition: Darwin.h:259
void AddLinkRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add the linker arguments to link the compiler runtime library.
Definition: Darwin.cpp:1065
ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const override
Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
Definition: Darwin.cpp:713
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Darwin.cpp:2151
Action - Represent an abstract compilation step to perform.
Definition: Action.h:48
static bool needsProfileRT(const llvm::opt::ArgList &Args)
needsProfileRT - returns true if instrumentation profile is on.
Definition: ToolChain.cpp:394
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:1783
Tool * getTool(Action::ActionClass AC) const override
Definition: Darwin.cpp:830
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
static bool hasExportSymbolDirective(const ArgList &Args)
Check if the link command contains a symbol export directive.
Definition: Darwin.cpp:1001
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:416
vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:95
types::ID getType() const
Definition: Action.h:140
CompileCommand Cmd
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
types::ID getType() const
Definition: InputInfo.h:78
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Darwin.cpp:2289
bool isTargetInitialized() const
Definition: Darwin.h:393
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:2155
StringRef getPlatform() const
Definition: ToolChain.h:199
llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const override
GetExceptionModel - Return the tool chain exception model.
Definition: Darwin.cpp:2130
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
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:686
&#39;watchos&#39; is a variant of iOS for Apple&#39;s watchOS.
Definition: ObjCRuntime.h:49
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Darwin.cpp:2310
Defines a function that returns the minimum OS versions supporting C++17&#39;s aligned allocation functio...
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:68
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:2035
ActionClass getKind() const
Definition: Action.h:139
bool isTargetWatchOSBased() const
Definition: Darwin.h:383
&#39;macosx&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:35
llvm::StringRef getAsString(SyncScope S)
Definition: SyncScope.h:51
static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol)
Add an export directive for Symbol to the link command.
Definition: Darwin.cpp:1016
virtual bool SupportsEmbeddedBitcode() const
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: ToolChain.h:426
VersionTuple TargetVersion
The OS version we are targeting.
Definition: Darwin.h:284
static const char * ArmMachOArchNameCPU(StringRef CPU)
Definition: Darwin.cpp:761
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:206
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use system-specific CUDA includes.
Definition: Darwin.cpp:735
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
bool isTargetIOSSimulator() const
Definition: Darwin.h:347
llvm::Triple::ArchType getArchTypeForMachOArchName(StringRef Str)
Definition: Darwin.cpp:34
unsigned GetDefaultDwarfVersion() const override
Definition: Darwin.cpp:911
virtual void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.h:165
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:197
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Cuda.cpp:229
Link the library in before any others.
Definition: Darwin.h:187
static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion)
Returns the most appropriate macOS target version for the current process.
Definition: Darwin.cpp:1170
#define false
Definition: stdbool.h:33
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:2047
bool SupportsProfiling() const override
SupportsProfiling - Does this tool chain support -pg.
Definition: Darwin.cpp:2160
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:187
VersionTuple getTargetVersion() const
Definition: Darwin.h:395
const Driver & getDriver() const
Definition: ToolChain.h:181
void AddLinkRuntimeLib(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, StringRef DarwinLibName, RuntimeLinkOptions Opts=RuntimeLinkOptions()) const
Add a runtime library to the list of items to link.
Definition: Darwin.cpp:919
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:806
bool isTargetIOSBased() const
Is the target either iOS or an iOS simulator?
Definition: Darwin.h:173
DarwinClang(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Darwin.cpp:855
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
void addStartObjectFileArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2189
static const char * ArmMachOArchName(StringRef Arch)
Definition: Darwin.cpp:744
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:874
DarwinPlatformKind TargetPlatform
Definition: Darwin.h:280
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:654
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:634
static StringRef getSDKName(StringRef isysroot)
Definition: Darwin.cpp:973
void CheckObjCARC() const override
Complain if this tool chain doesn&#39;t support Objective-C ARC.
Definition: Darwin.cpp:2282
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:28
StringRef getOSLibraryNameSuffix() const
Definition: Darwin.cpp:986
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
virtual void AddLinkRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Add the linker arguments to link the compiler runtime library.
Definition: Darwin.cpp:1999
llvm::VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS)
unsigned getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
void setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str)
Definition: Darwin.cpp:69
Defines the virtual file system interface vfs::FileSystem.
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:107
void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2165
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:1712
&#39;ios&#39; is the Apple-provided NeXT-derived runtime on iOS or the iOS simulator; it is always non-fragil...
Definition: ObjCRuntime.h:45
bool exists(const Twine &Path)
Check whether a file exists. Provided for convenience.
uint64_t SanitizerMask
Definition: Sanitizers.h:26
StringRef getDefaultUniversalArchName() const
Provide the default architecture name (as expected by -arch) for this toolchain.
Definition: ToolChain.cpp:217
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:46
const Driver & getDriver() const
Definition: Compilation.h:134
RuntimeLinkOptions
Options to control how a runtime library is linked.
Definition: Darwin.h:176
const llvm::Triple & getTriple() const
Definition: ToolChain.h:183
Tool * buildLinker() const override
Definition: Darwin.cpp:849
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:799
ID lookupTypeForExtension(llvm::StringRef Ext)
lookupTypeForExtension - Lookup the type to use for the file extension Ext.
Definition: Types.cpp:195
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:280
Emit rpaths for as well as the resource directory.
Definition: Darwin.h:184
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Add warning options that need to be passed to cc1 for this target.
Definition: Darwin.cpp:859
bool isTargetWatchOSSimulator() const
Definition: Darwin.h:378
bool isFilename() const
Definition: InputInfo.h:76
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:297
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:668
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:233
RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const override
Definition: Darwin.cpp:1053
bool hasNativeARC() const
Does this runtime natively provide the ARC entrypoints?
Definition: ObjCRuntime.h:162
static bool isObjCRuntimeLinked(const ArgList &Args)
Determine whether we are linking the ObjC runtime.
Definition: Darwin.cpp:413
bool isTargetTvOSSimulator() const
Definition: Darwin.h:363
bool isIPhoneOSVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:400
bool hasSubscripting() const
Does this runtime directly support the subscripting methods?
Definition: ObjCRuntime.h:208
void setTarget(DarwinPlatformKind Platform, DarwinEnvironmentKind Environment, unsigned Major, unsigned Minor, unsigned Micro) const
Definition: Darwin.h:323
bool empty() const
Definition: Job.h:189
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:612
bool isAlignedAllocationUnavailable() const
Return true if c++17 aligned allocation/deallocation functions are not implemented in the c++ standar...
Definition: Darwin.cpp:2014
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:1757
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88