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"
16 #include "clang/Driver/Driver.h"
18 #include "clang/Driver/Options.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/Option/ArgList.h"
22 #include "llvm/Support/Path.h"
23 #include "llvm/Support/ScopedPrinter.h"
24 #include "llvm/Support/TargetParser.h"
25 #include "llvm/Support/VirtualFileSystem.h"
26 #include <cstdlib> // ::getenv
27 
28 using namespace clang::driver;
29 using namespace clang::driver::tools;
30 using namespace clang::driver::toolchains;
31 using namespace clang;
32 using namespace llvm::opt;
33 
34 llvm::Triple::ArchType darwin::getArchTypeForMachOArchName(StringRef Str) {
35  // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
36  // archs which Darwin doesn't use.
37 
38  // The matching this routine does is fairly pointless, since it is neither the
39  // complete architecture list, nor a reasonable subset. The problem is that
40  // historically the driver driver accepts this and also ties its -march=
41  // handling to the architecture name, so we need to be careful before removing
42  // support for it.
43 
44  // This code must be kept in sync with Clang's Darwin specific argument
45  // translation.
46 
47  return llvm::StringSwitch<llvm::Triple::ArchType>(Str)
48  .Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc)
49  .Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc)
50  .Case("ppc64", llvm::Triple::ppc64)
51  .Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86)
52  .Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4",
53  llvm::Triple::x86)
54  .Cases("x86_64", "x86_64h", llvm::Triple::x86_64)
55  // This is derived from the driver driver.
56  .Cases("arm", "armv4t", "armv5", "armv6", "armv6m", llvm::Triple::arm)
57  .Cases("armv7", "armv7em", "armv7k", "armv7m", llvm::Triple::arm)
58  .Cases("armv7s", "xscale", llvm::Triple::arm)
59  .Case("arm64", llvm::Triple::aarch64)
60  .Case("r600", llvm::Triple::r600)
61  .Case("amdgcn", llvm::Triple::amdgcn)
62  .Case("nvptx", llvm::Triple::nvptx)
63  .Case("nvptx64", llvm::Triple::nvptx64)
64  .Case("amdil", llvm::Triple::amdil)
65  .Case("spir", llvm::Triple::spir)
66  .Default(llvm::Triple::UnknownArch);
67 }
68 
69 void darwin::setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str) {
70  const llvm::Triple::ArchType Arch = getArchTypeForMachOArchName(Str);
71  llvm::ARM::ArchKind ArchKind = llvm::ARM::parseArch(Str);
72  T.setArch(Arch);
73 
74  if (Str == "x86_64h")
75  T.setArchName(Str);
76  else if (ArchKind == llvm::ARM::ArchKind::ARMV6M ||
77  ArchKind == llvm::ARM::ArchKind::ARMV7M ||
78  ArchKind == llvm::ARM::ArchKind::ARMV7EM) {
79  T.setOS(llvm::Triple::UnknownOS);
80  T.setObjectFormat(llvm::Triple::MachO);
81  }
82 }
83 
85  const InputInfo &Output,
86  const InputInfoList &Inputs,
87  const ArgList &Args,
88  const char *LinkingOutput) const {
89  ArgStringList CmdArgs;
90 
91  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
92  const InputInfo &Input = Inputs[0];
93 
94  // Determine the original source input.
95  const Action *SourceAction = &JA;
96  while (SourceAction->getKind() != Action::InputClass) {
97  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
98  SourceAction = SourceAction->getInputs()[0];
99  }
100 
101  // If -fno-integrated-as is used add -Q to the darwin assembler driver to make
102  // sure it runs its system assembler not clang's integrated assembler.
103  // Applicable to darwin11+ and Xcode 4+. darwin<10 lacked integrated-as.
104  // FIXME: at run-time detect assembler capabilities or rely on version
105  // information forwarded by -target-assembler-version.
106  if (Args.hasArg(options::OPT_fno_integrated_as)) {
107  const llvm::Triple &T(getToolChain().getTriple());
108  if (!(T.isMacOSX() && T.isMacOSXVersionLT(10, 7)))
109  CmdArgs.push_back("-Q");
110  }
111 
112  // Forward -g, assuming we are dealing with an actual assembly file.
113  if (SourceAction->getType() == types::TY_Asm ||
114  SourceAction->getType() == types::TY_PP_Asm) {
115  if (Args.hasArg(options::OPT_gstabs))
116  CmdArgs.push_back("--gstabs");
117  else if (Args.hasArg(options::OPT_g_Group))
118  CmdArgs.push_back("-g");
119  }
120 
121  // Derived from asm spec.
122  AddMachOArch(Args, CmdArgs);
123 
124  // Use -force_cpusubtype_ALL on x86 by default.
125  if (getToolChain().getArch() == llvm::Triple::x86 ||
126  getToolChain().getArch() == llvm::Triple::x86_64 ||
127  Args.hasArg(options::OPT_force__cpusubtype__ALL))
128  CmdArgs.push_back("-force_cpusubtype_ALL");
129 
130  if (getToolChain().getArch() != llvm::Triple::x86_64 &&
131  (((Args.hasArg(options::OPT_mkernel) ||
132  Args.hasArg(options::OPT_fapple_kext)) &&
133  getMachOToolChain().isKernelStatic()) ||
134  Args.hasArg(options::OPT_static)))
135  CmdArgs.push_back("-static");
136 
137  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
138 
139  assert(Output.isFilename() && "Unexpected lipo output.");
140  CmdArgs.push_back("-o");
141  CmdArgs.push_back(Output.getFilename());
142 
143  assert(Input.isFilename() && "Invalid input.");
144  CmdArgs.push_back(Input.getFilename());
145 
146  // asm_final spec is empty.
147 
148  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
149  C.addCommand(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() && Version[0] >= 116 && NeedsTempPath(Inputs)) {
228  std::string TmpPathName;
229  if (D.getLTOMode() == LTOK_Full) {
230  // If we are using full LTO, then automatically create a temporary file
231  // path for the linker to use, so that it's lifetime will extend past a
232  // possible dsymutil step.
233  TmpPathName =
234  D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object));
235  } else if (D.getLTOMode() == LTOK_Thin)
236  // If we are using thin LTO, then create a directory instead.
237  TmpPathName = D.GetTemporaryDirectory("thinlto");
238 
239  if (!TmpPathName.empty()) {
240  auto *TmpPath = C.getArgs().MakeArgString(TmpPathName);
241  C.addTempFile(TmpPath);
242  CmdArgs.push_back("-object_path_lto");
243  CmdArgs.push_back(TmpPath);
244  }
245  }
246 
247  // Use -lto_library option to specify the libLTO.dylib path. Try to find
248  // it in clang installed libraries. ld64 will only look at this argument
249  // when it actually uses LTO, so libLTO.dylib only needs to exist at link
250  // time if ld64 decides that it needs to use LTO.
251  // Since this is passed unconditionally, ld64 will never look for libLTO.dylib
252  // next to it. That's ok since ld64 using a libLTO.dylib not matching the
253  // clang version won't work anyways.
254  if (Version[0] >= 133) {
255  // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
256  StringRef P = llvm::sys::path::parent_path(D.Dir);
257  SmallString<128> LibLTOPath(P);
258  llvm::sys::path::append(LibLTOPath, "lib");
259  llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
260  CmdArgs.push_back("-lto_library");
261  CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
262  }
263 
264  // ld64 version 262 and above run the deduplicate pass by default.
265  if (Version[0] >= 262 && shouldLinkerNotDedup(C.getJobs().empty(), Args))
266  CmdArgs.push_back("-no_deduplicate");
267 
268  // Derived from the "link" spec.
269  Args.AddAllArgs(CmdArgs, options::OPT_static);
270  if (!Args.hasArg(options::OPT_static))
271  CmdArgs.push_back("-dynamic");
272  if (Args.hasArg(options::OPT_fgnu_runtime)) {
273  // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
274  // here. How do we wish to handle such things?
275  }
276 
277  if (!Args.hasArg(options::OPT_dynamiclib)) {
278  AddMachOArch(Args, CmdArgs);
279  // FIXME: Why do this only on this path?
280  Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
281 
282  Args.AddLastArg(CmdArgs, options::OPT_bundle);
283  Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
284  Args.AddAllArgs(CmdArgs, options::OPT_client__name);
285 
286  Arg *A;
287  if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
288  (A = Args.getLastArg(options::OPT_current__version)) ||
289  (A = Args.getLastArg(options::OPT_install__name)))
290  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
291  << "-dynamiclib";
292 
293  Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
294  Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
295  Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
296  } else {
297  CmdArgs.push_back("-dylib");
298 
299  Arg *A;
300  if ((A = Args.getLastArg(options::OPT_bundle)) ||
301  (A = Args.getLastArg(options::OPT_bundle__loader)) ||
302  (A = Args.getLastArg(options::OPT_client__name)) ||
303  (A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
304  (A = Args.getLastArg(options::OPT_keep__private__externs)) ||
305  (A = Args.getLastArg(options::OPT_private__bundle)))
306  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
307  << "-dynamiclib";
308 
309  Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
310  "-dylib_compatibility_version");
311  Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
312  "-dylib_current_version");
313 
314  AddMachOArch(Args, CmdArgs);
315 
316  Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
317  "-dylib_install_name");
318  }
319 
320  Args.AddLastArg(CmdArgs, options::OPT_all__load);
321  Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
322  Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
323  if (MachOTC.isTargetIOSBased())
324  Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
325  Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
326  Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
327  Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
328  Args.AddLastArg(CmdArgs, options::OPT_dynamic);
329  Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
330  Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
331  Args.AddAllArgs(CmdArgs, options::OPT_force__load);
332  Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
333  Args.AddAllArgs(CmdArgs, options::OPT_image__base);
334  Args.AddAllArgs(CmdArgs, options::OPT_init);
335 
336  // Add the deployment target.
337  MachOTC.addMinVersionArgs(Args, CmdArgs);
338 
339  Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
340  Args.AddLastArg(CmdArgs, options::OPT_multi__module);
341  Args.AddLastArg(CmdArgs, options::OPT_single__module);
342  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
343  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
344 
345  if (const Arg *A =
346  Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
347  options::OPT_fno_pie, options::OPT_fno_PIE)) {
348  if (A->getOption().matches(options::OPT_fpie) ||
349  A->getOption().matches(options::OPT_fPIE))
350  CmdArgs.push_back("-pie");
351  else
352  CmdArgs.push_back("-no_pie");
353  }
354 
355  // for embed-bitcode, use -bitcode_bundle in linker command
356  if (C.getDriver().embedBitcodeEnabled()) {
357  // Check if the toolchain supports bitcode build flow.
358  if (MachOTC.SupportsEmbeddedBitcode()) {
359  CmdArgs.push_back("-bitcode_bundle");
360  if (C.getDriver().embedBitcodeMarkerOnly() && Version[0] >= 278) {
361  CmdArgs.push_back("-bitcode_process_mode");
362  CmdArgs.push_back("marker");
363  }
364  } else
365  D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
366  }
367 
368  Args.AddLastArg(CmdArgs, options::OPT_prebind);
369  Args.AddLastArg(CmdArgs, options::OPT_noprebind);
370  Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
371  Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
372  Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
373  Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
374  Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
375  Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
376  Args.AddAllArgs(CmdArgs, options::OPT_segprot);
377  Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
378  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
379  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
380  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
381  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
382  Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
383  Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
384 
385  // Give --sysroot= preference, over the Apple specific behavior to also use
386  // --isysroot as the syslibroot.
387  StringRef sysroot = C.getSysRoot();
388  if (sysroot != "") {
389  CmdArgs.push_back("-syslibroot");
390  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
391  } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
392  CmdArgs.push_back("-syslibroot");
393  CmdArgs.push_back(A->getValue());
394  }
395 
396  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
397  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
398  Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
399  Args.AddAllArgs(CmdArgs, options::OPT_undefined);
400  Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
401  Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
402  Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
403  Args.AddAllArgs(CmdArgs, options::OPT_y);
404  Args.AddLastArg(CmdArgs, options::OPT_w);
405  Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
406  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
407  Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
408  Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
409  Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
410  Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
411  Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
412  Args.AddLastArg(CmdArgs, options::OPT_whyload);
413  Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
414  Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
415  Args.AddLastArg(CmdArgs, options::OPT_dylinker);
416  Args.AddLastArg(CmdArgs, options::OPT_Mach);
417 }
418 
419 /// Determine whether we are linking the ObjC runtime.
420 static bool isObjCRuntimeLinked(const ArgList &Args) {
421  if (isObjCAutoRefCount(Args)) {
422  Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
423  return true;
424  }
425  return Args.hasArg(options::OPT_fobjc_link_runtime);
426 }
427 
429  const InputInfo &Output,
430  const InputInfoList &Inputs,
431  const ArgList &Args,
432  const char *LinkingOutput) const {
433  assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
434 
435  // If the number of arguments surpasses the system limits, we will encode the
436  // input files in a separate file, shortening the command line. To this end,
437  // build a list of input file names that can be passed via a file with the
438  // -filelist linker option.
439  llvm::opt::ArgStringList InputFileList;
440 
441  // The logic here is derived from gcc's behavior; most of which
442  // comes from specs (starting with link_command). Consult gcc for
443  // more information.
444  ArgStringList CmdArgs;
445 
446  /// Hack(tm) to ignore linking errors when we are doing ARC migration.
447  if (Args.hasArg(options::OPT_ccc_arcmt_check,
448  options::OPT_ccc_arcmt_migrate)) {
449  for (const auto &Arg : Args)
450  Arg->claim();
451  const char *Exec =
452  Args.MakeArgString(getToolChain().GetProgramPath("touch"));
453  CmdArgs.push_back(Output.getFilename());
454  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
455  return;
456  }
457 
458  // I'm not sure why this particular decomposition exists in gcc, but
459  // we follow suite for ease of comparison.
460  AddLinkArgs(C, Args, CmdArgs, Inputs);
461 
462  // For LTO, pass the name of the optimization record file and other
463  // opt-remarks flags.
464  if (Args.hasFlag(options::OPT_fsave_optimization_record,
465  options::OPT_fno_save_optimization_record, false)) {
466  CmdArgs.push_back("-mllvm");
467  CmdArgs.push_back("-lto-pass-remarks-output");
468  CmdArgs.push_back("-mllvm");
469 
471  F = Output.getFilename();
472  F += ".opt.yaml";
473  CmdArgs.push_back(Args.MakeArgString(F));
474 
475  if (getLastProfileUseArg(Args)) {
476  CmdArgs.push_back("-mllvm");
477  CmdArgs.push_back("-lto-pass-remarks-with-hotness");
478 
479  if (const Arg *A =
480  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
481  CmdArgs.push_back("-mllvm");
482  std::string Opt =
483  std::string("-lto-pass-remarks-hotness-threshold=") + A->getValue();
484  CmdArgs.push_back(Args.MakeArgString(Opt));
485  }
486  }
487  }
488 
489  // Propagate the -moutline flag to the linker in LTO.
490  if (Args.hasFlag(options::OPT_moutline, options::OPT_mno_outline, false)) {
491  if (getMachOToolChain().getMachOArchName(Args) == "arm64") {
492  CmdArgs.push_back("-mllvm");
493  CmdArgs.push_back("-enable-machine-outliner");
494 
495  // Outline from linkonceodr functions by default in LTO.
496  CmdArgs.push_back("-mllvm");
497  CmdArgs.push_back("-enable-linkonceodr-outlining");
498  }
499  }
500 
501  // It seems that the 'e' option is completely ignored for dynamic executables
502  // (the default), and with static executables, the last one wins, as expected.
503  Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
504  options::OPT_Z_Flag, options::OPT_u_Group,
505  options::OPT_e, options::OPT_r});
506 
507  // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
508  // members of static archive libraries which implement Objective-C classes or
509  // categories.
510  if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
511  CmdArgs.push_back("-ObjC");
512 
513  CmdArgs.push_back("-o");
514  CmdArgs.push_back(Output.getFilename());
515 
516  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
517  getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
518 
519  Args.AddAllArgs(CmdArgs, options::OPT_L);
520 
521  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
522  // Build the input file for -filelist (list of linker input files) in case we
523  // need it later
524  for (const auto &II : Inputs) {
525  if (!II.isFilename()) {
526  // This is a linker input argument.
527  // We cannot mix input arguments and file names in a -filelist input, thus
528  // we prematurely stop our list (remaining files shall be passed as
529  // arguments).
530  if (InputFileList.size() > 0)
531  break;
532 
533  continue;
534  }
535 
536  InputFileList.push_back(II.getFilename());
537  }
538 
539  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
540  addOpenMPRuntime(CmdArgs, getToolChain(), Args);
541 
542  if (isObjCRuntimeLinked(Args) &&
543  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
544  // We use arclite library for both ARC and subscripting support.
545  getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
546 
547  CmdArgs.push_back("-framework");
548  CmdArgs.push_back("Foundation");
549  // Link libobj.
550  CmdArgs.push_back("-lobjc");
551  }
552 
553  if (LinkingOutput) {
554  CmdArgs.push_back("-arch_multiple");
555  CmdArgs.push_back("-final_output");
556  CmdArgs.push_back(LinkingOutput);
557  }
558 
559  if (Args.hasArg(options::OPT_fnested_functions))
560  CmdArgs.push_back("-allow_stack_execute");
561 
562  getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
563 
564  if (unsigned Parallelism =
565  getLTOParallelism(Args, getToolChain().getDriver())) {
566  CmdArgs.push_back("-mllvm");
567  CmdArgs.push_back(Args.MakeArgString("-threads=" + Twine(Parallelism)));
568  }
569 
570  if (getToolChain().ShouldLinkCXXStdlib(Args))
571  getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
572  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
573  // link_ssp spec is empty.
574 
575  // Let the tool chain choose which runtime library to link.
576  getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs);
577 
578  // No need to do anything for pthreads. Claim argument to avoid warning.
579  Args.ClaimAllArgs(options::OPT_pthread);
580  Args.ClaimAllArgs(options::OPT_pthreads);
581  }
582 
583  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
584  // endfile_spec is empty.
585  }
586 
587  Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
588  Args.AddAllArgs(CmdArgs, options::OPT_F);
589 
590  // -iframework should be forwarded as -F.
591  for (const Arg *A : Args.filtered(options::OPT_iframework))
592  CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
593 
594  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
595  if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
596  if (A->getValue() == StringRef("Accelerate")) {
597  CmdArgs.push_back("-framework");
598  CmdArgs.push_back("Accelerate");
599  }
600  }
601  }
602 
603  const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
604  std::unique_ptr<Command> Cmd =
605  llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
606  Cmd->setInputFileList(std::move(InputFileList));
607  C.addCommand(std::move(Cmd));
608 }
609 
611  const InputInfo &Output,
612  const InputInfoList &Inputs,
613  const ArgList &Args,
614  const char *LinkingOutput) const {
615  ArgStringList CmdArgs;
616 
617  CmdArgs.push_back("-create");
618  assert(Output.isFilename() && "Unexpected lipo output.");
619 
620  CmdArgs.push_back("-output");
621  CmdArgs.push_back(Output.getFilename());
622 
623  for (const auto &II : Inputs) {
624  assert(II.isFilename() && "Unexpected lipo input.");
625  CmdArgs.push_back(II.getFilename());
626  }
627 
628  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
629  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
630 }
631 
633  const InputInfo &Output,
634  const InputInfoList &Inputs,
635  const ArgList &Args,
636  const char *LinkingOutput) const {
637  ArgStringList CmdArgs;
638 
639  CmdArgs.push_back("-o");
640  CmdArgs.push_back(Output.getFilename());
641 
642  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
643  const InputInfo &Input = Inputs[0];
644  assert(Input.isFilename() && "Unexpected dsymutil input.");
645  CmdArgs.push_back(Input.getFilename());
646 
647  const char *Exec =
648  Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
649  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
650 }
651 
653  const InputInfo &Output,
654  const InputInfoList &Inputs,
655  const ArgList &Args,
656  const char *LinkingOutput) const {
657  ArgStringList CmdArgs;
658  CmdArgs.push_back("--verify");
659  CmdArgs.push_back("--debug-info");
660  CmdArgs.push_back("--eh-frame");
661  CmdArgs.push_back("--quiet");
662 
663  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
664  const InputInfo &Input = Inputs[0];
665  assert(Input.isFilename() && "Unexpected verify input");
666 
667  // Grabbing the output of the earlier dsymutil run.
668  CmdArgs.push_back(Input.getFilename());
669 
670  const char *Exec =
671  Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
672  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
673 }
674 
675 MachO::MachO(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
676  : ToolChain(D, Triple, Args) {
677  // We expect 'as', 'ld', etc. to be adjacent to our install dir.
678  getProgramPaths().push_back(getDriver().getInstalledDir());
679  if (getDriver().getInstalledDir() != getDriver().Dir)
680  getProgramPaths().push_back(getDriver().Dir);
681 }
682 
683 /// Darwin - Darwin tool chain for i386 and x86_64.
684 Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
685  : MachO(D, Triple, Args), TargetInitialized(false),
686  CudaInstallation(D, Triple, Args) {}
687 
690 
691  // Darwin always preprocesses assembly files (unless -x is used explicitly).
692  if (Ty == types::TY_PP_Asm)
693  return types::TY_Asm;
694 
695  return Ty;
696 }
697 
698 bool MachO::HasNativeLLVMSupport() const { return true; }
699 
701  // Default to use libc++ on OS X 10.9+ and iOS 7+.
702  if ((isTargetMacOS() && !isMacosxVersionLT(10, 9)) ||
703  (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
705  return ToolChain::CST_Libcxx;
706 
708 }
709 
710 /// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
711 ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
712  if (isTargetWatchOSBased())
714  if (isTargetIOSBased())
716  if (isNonFragile)
719 }
720 
721 /// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
723  if (isTargetWatchOSBased())
724  return true;
725  else if (isTargetIOSBased())
726  return !isIPhoneOSVersionLT(3, 2);
727  else {
728  assert(isTargetMacOS() && "unexpected darwin target");
729  return !isMacosxVersionLT(10, 6);
730  }
731 }
732 
733 void Darwin::AddCudaIncludeArgs(const ArgList &DriverArgs,
734  ArgStringList &CC1Args) const {
735  CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
736 }
737 
738 // This is just a MachO name translation routine and there's no
739 // way to join this into ARMTargetParser without breaking all
740 // other assumptions. Maybe MachO should consider standardising
741 // their nomenclature.
742 static const char *ArmMachOArchName(StringRef Arch) {
743  return llvm::StringSwitch<const char *>(Arch)
744  .Case("armv6k", "armv6")
745  .Case("armv6m", "armv6m")
746  .Case("armv5tej", "armv5")
747  .Case("xscale", "xscale")
748  .Case("armv4t", "armv4t")
749  .Case("armv7", "armv7")
750  .Cases("armv7a", "armv7-a", "armv7")
751  .Cases("armv7r", "armv7-r", "armv7")
752  .Cases("armv7em", "armv7e-m", "armv7em")
753  .Cases("armv7k", "armv7-k", "armv7k")
754  .Cases("armv7m", "armv7-m", "armv7m")
755  .Cases("armv7s", "armv7-s", "armv7s")
756  .Default(nullptr);
757 }
758 
759 static const char *ArmMachOArchNameCPU(StringRef CPU) {
760  llvm::ARM::ArchKind ArchKind = llvm::ARM::parseCPUArch(CPU);
761  if (ArchKind == llvm::ARM::ArchKind::INVALID)
762  return nullptr;
763  StringRef Arch = llvm::ARM::getArchName(ArchKind);
764 
765  // FIXME: Make sure this MachO triple mangling is really necessary.
766  // ARMv5* normalises to ARMv5.
767  if (Arch.startswith("armv5"))
768  Arch = Arch.substr(0, 5);
769  // ARMv6*, except ARMv6M, normalises to ARMv6.
770  else if (Arch.startswith("armv6") && !Arch.endswith("6m"))
771  Arch = Arch.substr(0, 5);
772  // ARMv7A normalises to ARMv7.
773  else if (Arch.endswith("v7a"))
774  Arch = Arch.substr(0, 5);
775  return Arch.data();
776 }
777 
778 StringRef MachO::getMachOArchName(const ArgList &Args) const {
779  switch (getTriple().getArch()) {
780  default:
782 
783  case llvm::Triple::aarch64:
784  return "arm64";
785 
786  case llvm::Triple::thumb:
787  case llvm::Triple::arm:
788  if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ))
789  if (const char *Arch = ArmMachOArchName(A->getValue()))
790  return Arch;
791 
792  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
793  if (const char *Arch = ArmMachOArchNameCPU(A->getValue()))
794  return Arch;
795 
796  return "arm";
797  }
798 }
799 
801 
803 
804 std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
805  types::ID InputType) const {
806  llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
807 
808  // If the target isn't initialized (e.g., an unknown Darwin platform, return
809  // the default triple).
810  if (!isTargetInitialized())
811  return Triple.getTriple();
812 
813  SmallString<16> Str;
814  if (isTargetWatchOSBased())
815  Str += "watchos";
816  else if (isTargetTvOSBased())
817  Str += "tvos";
818  else if (isTargetIOSBased())
819  Str += "ios";
820  else
821  Str += "macosx";
822  Str += getTargetVersion().getAsString();
823  Triple.setOSName(Str);
824 
825  return Triple.getTriple();
826 }
827 
829  switch (AC) {
831  if (!Lipo)
832  Lipo.reset(new tools::darwin::Lipo(*this));
833  return Lipo.get();
835  if (!Dsymutil)
836  Dsymutil.reset(new tools::darwin::Dsymutil(*this));
837  return Dsymutil.get();
839  if (!VerifyDebug)
840  VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
841  return VerifyDebug.get();
842  default:
843  return ToolChain::getTool(AC);
844  }
845 }
846 
847 Tool *MachO::buildLinker() const { return new tools::darwin::Linker(*this); }
848 
850  return new tools::darwin::Assembler(*this);
851 }
852 
853 DarwinClang::DarwinClang(const Driver &D, const llvm::Triple &Triple,
854  const ArgList &Args)
855  : Darwin(D, Triple, Args) {}
856 
857 void DarwinClang::addClangWarningOptions(ArgStringList &CC1Args) const {
858  // For modern targets, promote certain warnings to errors.
859  if (isTargetWatchOSBased() || getTriple().isArch64Bit()) {
860  // Always enable -Wdeprecated-objc-isa-usage and promote it
861  // to an error.
862  CC1Args.push_back("-Wdeprecated-objc-isa-usage");
863  CC1Args.push_back("-Werror=deprecated-objc-isa-usage");
864 
865  // For iOS and watchOS, also error about implicit function declarations,
866  // as that can impact calling conventions.
867  if (!isTargetMacOS())
868  CC1Args.push_back("-Werror=implicit-function-declaration");
869  }
870 }
871 
872 void DarwinClang::AddLinkARCArgs(const ArgList &Args,
873  ArgStringList &CmdArgs) const {
874  // Avoid linking compatibility stubs on i386 mac.
875  if (isTargetMacOS() && getArch() == llvm::Triple::x86)
876  return;
877 
878  ObjCRuntime runtime = getDefaultObjCRuntime(/*nonfragile*/ true);
879 
880  if ((runtime.hasNativeARC() || !isObjCAutoRefCount(Args)) &&
881  runtime.hasSubscripting())
882  return;
883 
884  CmdArgs.push_back("-force_load");
885  SmallString<128> P(getDriver().ClangExecutable);
886  llvm::sys::path::remove_filename(P); // 'clang'
887  llvm::sys::path::remove_filename(P); // 'bin'
888  llvm::sys::path::append(P, "lib", "arc", "libarclite_");
889  // Mash in the platform.
891  P += "watchsimulator";
892  else if (isTargetWatchOS())
893  P += "watchos";
894  else if (isTargetTvOSSimulator())
895  P += "appletvsimulator";
896  else if (isTargetTvOS())
897  P += "appletvos";
898  else if (isTargetIOSSimulator())
899  P += "iphonesimulator";
900  else if (isTargetIPhoneOS())
901  P += "iphoneos";
902  else
903  P += "macosx";
904  P += ".a";
905 
906  CmdArgs.push_back(Args.MakeArgString(P));
907 }
908 
910  // Default to use DWARF 2 on OS X 10.10 / iOS 8 and lower.
911  if ((isTargetMacOS() && isMacosxVersionLT(10, 11)) ||
913  return 2;
914  return 4;
915 }
916 
917 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
918  StringRef Component, RuntimeLinkOptions Opts,
919  bool IsShared) const {
920  SmallString<64> DarwinLibName = StringRef("libclang_rt.");
921  // an Darwin the builtins compomnent is not in the library name
922  if (Component != "builtins") {
923  DarwinLibName += Component;
924  if (!(Opts & RLO_IsEmbedded))
925  DarwinLibName += "_";
926  DarwinLibName += getOSLibraryNameSuffix();
927  } else
928  DarwinLibName += getOSLibraryNameSuffix(true);
929 
930  DarwinLibName += IsShared ? "_dynamic.dylib" : ".a";
931  SmallString<128> Dir(getDriver().ResourceDir);
932  llvm::sys::path::append(
933  Dir, "lib", (Opts & RLO_IsEmbedded) ? "macho_embedded" : "darwin");
934 
935  SmallString<128> P(Dir);
936  llvm::sys::path::append(P, DarwinLibName);
937 
938  // For now, allow missing resource libraries to support developers who may
939  // not have compiler-rt checked out or integrated into their build (unless
940  // we explicitly force linking with this library).
941  if ((Opts & RLO_AlwaysLink) || getVFS().exists(P)) {
942  const char *LibArg = Args.MakeArgString(P);
943  if (Opts & RLO_FirstLink)
944  CmdArgs.insert(CmdArgs.begin(), LibArg);
945  else
946  CmdArgs.push_back(LibArg);
947  }
948 
949  // Adding the rpaths might negatively interact when other rpaths are involved,
950  // so we should make sure we add the rpaths last, after all user-specified
951  // rpaths. This is currently true from this place, but we need to be
952  // careful if this function is ever called before user's rpaths are emitted.
953  if (Opts & RLO_AddRPath) {
954  assert(DarwinLibName.endswith(".dylib") && "must be a dynamic library");
955 
956  // Add @executable_path to rpath to support having the dylib copied with
957  // the executable.
958  CmdArgs.push_back("-rpath");
959  CmdArgs.push_back("@executable_path");
960 
961  // Add the path to the resource dir to rpath to support using the dylib
962  // from the default location without copying.
963  CmdArgs.push_back("-rpath");
964  CmdArgs.push_back(Args.MakeArgString(Dir));
965  }
966 }
967 
968 StringRef Darwin::getPlatformFamily() const {
969  switch (TargetPlatform) {
970  case DarwinPlatformKind::MacOS:
971  return "MacOSX";
972  case DarwinPlatformKind::IPhoneOS:
973  return "iPhone";
974  case DarwinPlatformKind::TvOS:
975  return "AppleTV";
976  case DarwinPlatformKind::WatchOS:
977  return "Watch";
978  }
979  llvm_unreachable("Unsupported platform");
980 }
981 
982 StringRef Darwin::getSDKName(StringRef isysroot) {
983  // Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
984  llvm::sys::path::const_iterator SDKDir;
985  auto BeginSDK = llvm::sys::path::begin(isysroot);
986  auto EndSDK = llvm::sys::path::end(isysroot);
987  for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
988  StringRef SDK = *IT;
989  if (SDK.endswith(".sdk"))
990  return SDK.slice(0, SDK.size() - 4);
991  }
992  return "";
993 }
994 
995 StringRef Darwin::getOSLibraryNameSuffix(bool IgnoreSim) const {
996  switch (TargetPlatform) {
997  case DarwinPlatformKind::MacOS:
998  return "osx";
999  case DarwinPlatformKind::IPhoneOS:
1000  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "ios"
1001  : "iossim";
1002  case DarwinPlatformKind::TvOS:
1003  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "tvos"
1004  : "tvossim";
1005  case DarwinPlatformKind::WatchOS:
1006  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "watchos"
1007  : "watchossim";
1008  }
1009  llvm_unreachable("Unsupported platform");
1010 }
1011 
1012 /// Check if the link command contains a symbol export directive.
1013 static bool hasExportSymbolDirective(const ArgList &Args) {
1014  for (Arg *A : Args) {
1015  if (A->getOption().matches(options::OPT_exported__symbols__list))
1016  return true;
1017  if (!A->getOption().matches(options::OPT_Wl_COMMA) &&
1018  !A->getOption().matches(options::OPT_Xlinker))
1019  continue;
1020  if (A->containsValue("-exported_symbols_list") ||
1021  A->containsValue("-exported_symbol"))
1022  return true;
1023  }
1024  return false;
1025 }
1026 
1027 /// Add an export directive for \p Symbol to the link command.
1028 static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
1029  CmdArgs.push_back("-exported_symbol");
1030  CmdArgs.push_back(Symbol);
1031 }
1032 
1033 void Darwin::addProfileRTLibs(const ArgList &Args,
1034  ArgStringList &CmdArgs) const {
1035  if (!needsProfileRT(Args)) return;
1036 
1037  AddLinkRuntimeLib(Args, CmdArgs, "profile",
1039 
1040  // If we have a symbol export directive and we're linking in the profile
1041  // runtime, automatically export symbols necessary to implement some of the
1042  // runtime's functionality.
1043  if (hasExportSymbolDirective(Args)) {
1044  if (needsGCovInstrumentation(Args)) {
1045  addExportedSymbol(CmdArgs, "___gcov_flush");
1046  addExportedSymbol(CmdArgs, "_flush_fn_list");
1047  addExportedSymbol(CmdArgs, "_writeout_fn_list");
1048  } else {
1049  addExportedSymbol(CmdArgs, "___llvm_profile_filename");
1050  addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
1051  addExportedSymbol(CmdArgs, "_lprofCurFilename");
1052  addExportedSymbol(CmdArgs, "_lprofMergeValueProfData");
1053  }
1054  addExportedSymbol(CmdArgs, "_lprofDirMode");
1055  }
1056 }
1057 
1058 void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
1059  ArgStringList &CmdArgs,
1060  StringRef Sanitizer,
1061  bool Shared) const {
1062  auto RLO = RuntimeLinkOptions(RLO_AlwaysLink | (Shared ? RLO_AddRPath : 0U));
1063  AddLinkRuntimeLib(Args, CmdArgs, Sanitizer, RLO, Shared);
1064 }
1065 
1067  const ArgList &Args) const {
1068  if (Arg* A = Args.getLastArg(options::OPT_rtlib_EQ)) {
1069  StringRef Value = A->getValue();
1070  if (Value != "compiler-rt")
1071  getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
1072  << Value << "darwin";
1073  }
1074 
1076 }
1077 
1078 void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
1079  ArgStringList &CmdArgs) const {
1080  // Call once to ensure diagnostic is printed if wrong value was specified
1081  GetRuntimeLibType(Args);
1082 
1083  // Darwin doesn't support real static executables, don't link any runtime
1084  // libraries with -static.
1085  if (Args.hasArg(options::OPT_static) ||
1086  Args.hasArg(options::OPT_fapple_kext) ||
1087  Args.hasArg(options::OPT_mkernel))
1088  return;
1089 
1090  // Reject -static-libgcc for now, we can deal with this when and if someone
1091  // cares. This is useful in situations where someone wants to statically link
1092  // something like libstdc++, and needs its runtime support routines.
1093  if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
1094  getDriver().Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
1095  return;
1096  }
1097 
1098  const SanitizerArgs &Sanitize = getSanitizerArgs();
1099  if (Sanitize.needsAsanRt())
1100  AddLinkSanitizerLibArgs(Args, CmdArgs, "asan");
1101  if (Sanitize.needsLsanRt())
1102  AddLinkSanitizerLibArgs(Args, CmdArgs, "lsan");
1103  if (Sanitize.needsUbsanRt())
1104  AddLinkSanitizerLibArgs(Args, CmdArgs,
1105  Sanitize.requiresMinimalRuntime() ? "ubsan_minimal"
1106  : "ubsan",
1107  Sanitize.needsSharedRt());
1108  if (Sanitize.needsTsanRt())
1109  AddLinkSanitizerLibArgs(Args, CmdArgs, "tsan");
1110  if (Sanitize.needsFuzzer() && !Args.hasArg(options::OPT_dynamiclib)) {
1111  AddLinkSanitizerLibArgs(Args, CmdArgs, "fuzzer", /*shared=*/false);
1112 
1113  // Libfuzzer is written in C++ and requires libcxx.
1114  AddCXXStdlibLibArgs(Args, CmdArgs);
1115  }
1116  if (Sanitize.needsStatsRt()) {
1117  AddLinkRuntimeLib(Args, CmdArgs, "stats_client", RLO_AlwaysLink);
1118  AddLinkSanitizerLibArgs(Args, CmdArgs, "stats");
1119  }
1120  if (Sanitize.needsEsanRt())
1121  AddLinkSanitizerLibArgs(Args, CmdArgs, "esan");
1122 
1123  const XRayArgs &XRay = getXRayArgs();
1124  if (XRay.needsXRayRt()) {
1125  AddLinkRuntimeLib(Args, CmdArgs, "xray");
1126  AddLinkRuntimeLib(Args, CmdArgs, "xray-basic");
1127  AddLinkRuntimeLib(Args, CmdArgs, "xray-fdr");
1128  }
1129 
1130  // Otherwise link libSystem, then the dynamic runtime library, and finally any
1131  // target specific static runtime library.
1132  CmdArgs.push_back("-lSystem");
1133 
1134  // Select the dynamic runtime library and the target specific static library.
1135  if (isTargetIOSBased()) {
1136  // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
1137  // it never went into the SDK.
1138  // Linking against libgcc_s.1 isn't needed for iOS 5.0+
1139  if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator() &&
1140  getTriple().getArch() != llvm::Triple::aarch64)
1141  CmdArgs.push_back("-lgcc_s.1");
1142  }
1143  AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1144 }
1145 
1146 /// Returns the most appropriate macOS target version for the current process.
1147 ///
1148 /// If the macOS SDK version is the same or earlier than the system version,
1149 /// then the SDK version is returned. Otherwise the system version is returned.
1150 static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
1151  unsigned Major, Minor, Micro;
1152  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1153  if (!SystemTriple.isMacOSX())
1154  return MacOSSDKVersion;
1155  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1156  VersionTuple SystemVersion(Major, Minor, Micro);
1157  bool HadExtra;
1158  if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
1159  HadExtra))
1160  return MacOSSDKVersion;
1161  VersionTuple SDKVersion(Major, Minor, Micro);
1162  if (SDKVersion > SystemVersion)
1163  return SystemVersion.getAsString();
1164  return MacOSSDKVersion;
1165 }
1166 
1167 namespace {
1168 
1169 /// The Darwin OS that was selected or inferred from arguments / environment.
1170 struct DarwinPlatform {
1171  enum SourceKind {
1172  /// The OS was specified using the -target argument.
1173  TargetArg,
1174  /// The OS was specified using the -m<os>-version-min argument.
1175  OSVersionArg,
1176  /// The OS was specified using the OS_DEPLOYMENT_TARGET environment.
1177  DeploymentTargetEnv,
1178  /// The OS was inferred from the SDK.
1179  InferredFromSDK,
1180  /// The OS was inferred from the -arch.
1181  InferredFromArch
1182  };
1183 
1186 
1187  DarwinPlatformKind getPlatform() const { return Platform; }
1188 
1189  DarwinEnvironmentKind getEnvironment() const { return Environment; }
1190 
1191  void setEnvironment(DarwinEnvironmentKind Kind) {
1192  Environment = Kind;
1193  InferSimulatorFromArch = false;
1194  }
1195 
1196  StringRef getOSVersion() const {
1197  if (Kind == OSVersionArg)
1198  return Argument->getValue();
1199  return OSVersion;
1200  }
1201 
1202  void setOSVersion(StringRef S) {
1203  assert(Kind == TargetArg && "Unexpected kind!");
1204  OSVersion = S;
1205  }
1206 
1207  bool hasOSVersion() const { return HasOSVersion; }
1208 
1209  /// Returns true if the target OS was explicitly specified.
1210  bool isExplicitlySpecified() const { return Kind <= DeploymentTargetEnv; }
1211 
1212  /// Returns true if the simulator environment can be inferred from the arch.
1213  bool canInferSimulatorFromArch() const { return InferSimulatorFromArch; }
1214 
1215  /// Adds the -m<os>-version-min argument to the compiler invocation.
1216  void addOSVersionMinArgument(DerivedArgList &Args, const OptTable &Opts) {
1217  if (Argument)
1218  return;
1219  assert(Kind != TargetArg && Kind != OSVersionArg && "Invalid kind");
1220  options::ID Opt;
1221  switch (Platform) {
1222  case DarwinPlatformKind::MacOS:
1223  Opt = options::OPT_mmacosx_version_min_EQ;
1224  break;
1225  case DarwinPlatformKind::IPhoneOS:
1226  Opt = options::OPT_miphoneos_version_min_EQ;
1227  break;
1228  case DarwinPlatformKind::TvOS:
1229  Opt = options::OPT_mtvos_version_min_EQ;
1230  break;
1231  case DarwinPlatformKind::WatchOS:
1232  Opt = options::OPT_mwatchos_version_min_EQ;
1233  break;
1234  }
1235  Argument = Args.MakeJoinedArg(nullptr, Opts.getOption(Opt), OSVersion);
1236  Args.append(Argument);
1237  }
1238 
1239  /// Returns the OS version with the argument / environment variable that
1240  /// specified it.
1241  std::string getAsString(DerivedArgList &Args, const OptTable &Opts) {
1242  switch (Kind) {
1243  case TargetArg:
1244  case OSVersionArg:
1245  case InferredFromSDK:
1246  case InferredFromArch:
1247  assert(Argument && "OS version argument not yet inferred");
1248  return Argument->getAsString(Args);
1249  case DeploymentTargetEnv:
1250  return (llvm::Twine(EnvVarName) + "=" + OSVersion).str();
1251  }
1252  llvm_unreachable("Unsupported Darwin Source Kind");
1253  }
1254 
1255  static DarwinPlatform createFromTarget(const llvm::Triple &TT,
1256  StringRef OSVersion, Arg *A) {
1257  DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
1258  A);
1259  switch (TT.getEnvironment()) {
1260  case llvm::Triple::Simulator:
1261  Result.Environment = DarwinEnvironmentKind::Simulator;
1262  break;
1263  default:
1264  break;
1265  }
1266  unsigned Major, Minor, Micro;
1267  TT.getOSVersion(Major, Minor, Micro);
1268  if (Major == 0)
1269  Result.HasOSVersion = false;
1270  return Result;
1271  }
1272  static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
1273  Arg *A) {
1274  return DarwinPlatform(OSVersionArg, Platform, A);
1275  }
1276  static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
1277  StringRef EnvVarName,
1278  StringRef Value) {
1279  DarwinPlatform Result(DeploymentTargetEnv, Platform, Value);
1280  Result.EnvVarName = EnvVarName;
1281  return Result;
1282  }
1283  static DarwinPlatform createFromSDK(DarwinPlatformKind Platform,
1284  StringRef Value,
1285  bool IsSimulator = false) {
1286  DarwinPlatform Result(InferredFromSDK, Platform, Value);
1287  if (IsSimulator)
1288  Result.Environment = DarwinEnvironmentKind::Simulator;
1289  Result.InferSimulatorFromArch = false;
1290  return Result;
1291  }
1292  static DarwinPlatform createFromArch(llvm::Triple::OSType OS,
1293  StringRef Value) {
1294  return DarwinPlatform(InferredFromArch, getPlatformFromOS(OS), Value);
1295  }
1296 
1297  /// Constructs an inferred SDKInfo value based on the version inferred from
1298  /// the SDK path itself. Only works for values that were created by inferring
1299  /// the platform from the SDKPath.
1300  DarwinSDKInfo inferSDKInfo() {
1301  assert(Kind == InferredFromSDK && "can infer SDK info only");
1302  llvm::VersionTuple Version;
1303  bool IsValid = !Version.tryParse(OSVersion);
1304  (void)IsValid;
1305  assert(IsValid && "invalid SDK version");
1306  return DarwinSDKInfo(Version);
1307  }
1308 
1309 private:
1310  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, Arg *Argument)
1311  : Kind(Kind), Platform(Platform), Argument(Argument) {}
1312  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, StringRef Value,
1313  Arg *Argument = nullptr)
1314  : Kind(Kind), Platform(Platform), OSVersion(Value), Argument(Argument) {}
1315 
1316  static DarwinPlatformKind getPlatformFromOS(llvm::Triple::OSType OS) {
1317  switch (OS) {
1318  case llvm::Triple::Darwin:
1319  case llvm::Triple::MacOSX:
1320  return DarwinPlatformKind::MacOS;
1321  case llvm::Triple::IOS:
1322  return DarwinPlatformKind::IPhoneOS;
1323  case llvm::Triple::TvOS:
1324  return DarwinPlatformKind::TvOS;
1325  case llvm::Triple::WatchOS:
1326  return DarwinPlatformKind::WatchOS;
1327  default:
1328  llvm_unreachable("Unable to infer Darwin variant");
1329  }
1330  }
1331 
1332  SourceKind Kind;
1333  DarwinPlatformKind Platform;
1334  DarwinEnvironmentKind Environment = DarwinEnvironmentKind::NativeEnvironment;
1335  std::string OSVersion;
1336  bool HasOSVersion = true, InferSimulatorFromArch = true;
1337  Arg *Argument;
1338  StringRef EnvVarName;
1339 };
1340 
1341 /// Returns the deployment target that's specified using the -m<os>-version-min
1342 /// argument.
1344 getDeploymentTargetFromOSVersionArg(DerivedArgList &Args,
1345  const Driver &TheDriver) {
1346  Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
1347  Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ,
1348  options::OPT_mios_simulator_version_min_EQ);
1349  Arg *TvOSVersion =
1350  Args.getLastArg(options::OPT_mtvos_version_min_EQ,
1351  options::OPT_mtvos_simulator_version_min_EQ);
1352  Arg *WatchOSVersion =
1353  Args.getLastArg(options::OPT_mwatchos_version_min_EQ,
1354  options::OPT_mwatchos_simulator_version_min_EQ);
1355  if (OSXVersion) {
1356  if (iOSVersion || TvOSVersion || WatchOSVersion) {
1357  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1358  << OSXVersion->getAsString(Args)
1359  << (iOSVersion ? iOSVersion
1360  : TvOSVersion ? TvOSVersion : WatchOSVersion)
1361  ->getAsString(Args);
1362  }
1363  return DarwinPlatform::createOSVersionArg(Darwin::MacOS, OSXVersion);
1364  } else if (iOSVersion) {
1365  if (TvOSVersion || WatchOSVersion) {
1366  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1367  << iOSVersion->getAsString(Args)
1368  << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
1369  }
1370  return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
1371  } else if (TvOSVersion) {
1372  if (WatchOSVersion) {
1373  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1374  << TvOSVersion->getAsString(Args)
1375  << WatchOSVersion->getAsString(Args);
1376  }
1377  return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
1378  } else if (WatchOSVersion)
1379  return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
1380  return None;
1381 }
1382 
1383 /// Returns the deployment target that's specified using the
1384 /// OS_DEPLOYMENT_TARGET environment variable.
1386 getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
1387  const llvm::Triple &Triple) {
1388  std::string Targets[Darwin::LastDarwinPlatform + 1];
1389  const char *EnvVars[] = {
1390  "MACOSX_DEPLOYMENT_TARGET",
1391  "IPHONEOS_DEPLOYMENT_TARGET",
1392  "TVOS_DEPLOYMENT_TARGET",
1393  "WATCHOS_DEPLOYMENT_TARGET",
1394  };
1395  static_assert(llvm::array_lengthof(EnvVars) == Darwin::LastDarwinPlatform + 1,
1396  "Missing platform");
1397  for (const auto &I : llvm::enumerate(llvm::makeArrayRef(EnvVars))) {
1398  if (char *Env = ::getenv(I.value()))
1399  Targets[I.index()] = Env;
1400  }
1401 
1402  // Do not allow conflicts with the watchOS target.
1403  if (!Targets[Darwin::WatchOS].empty() &&
1404  (!Targets[Darwin::IPhoneOS].empty() || !Targets[Darwin::TvOS].empty())) {
1405  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1406  << "WATCHOS_DEPLOYMENT_TARGET"
1407  << (!Targets[Darwin::IPhoneOS].empty() ? "IPHONEOS_DEPLOYMENT_TARGET"
1408  : "TVOS_DEPLOYMENT_TARGET");
1409  }
1410 
1411  // Do not allow conflicts with the tvOS target.
1412  if (!Targets[Darwin::TvOS].empty() && !Targets[Darwin::IPhoneOS].empty()) {
1413  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1414  << "TVOS_DEPLOYMENT_TARGET"
1415  << "IPHONEOS_DEPLOYMENT_TARGET";
1416  }
1417 
1418  // Allow conflicts among OSX and iOS for historical reasons, but choose the
1419  // default platform.
1420  if (!Targets[Darwin::MacOS].empty() &&
1421  (!Targets[Darwin::IPhoneOS].empty() ||
1422  !Targets[Darwin::WatchOS].empty() || !Targets[Darwin::TvOS].empty())) {
1423  if (Triple.getArch() == llvm::Triple::arm ||
1424  Triple.getArch() == llvm::Triple::aarch64 ||
1425  Triple.getArch() == llvm::Triple::thumb)
1426  Targets[Darwin::MacOS] = "";
1427  else
1428  Targets[Darwin::IPhoneOS] = Targets[Darwin::WatchOS] =
1429  Targets[Darwin::TvOS] = "";
1430  }
1431 
1432  for (const auto &Target : llvm::enumerate(llvm::makeArrayRef(Targets))) {
1433  if (!Target.value().empty())
1434  return DarwinPlatform::createDeploymentTargetEnv(
1435  (Darwin::DarwinPlatformKind)Target.index(), EnvVars[Target.index()],
1436  Target.value());
1437  }
1438  return None;
1439 }
1440 
1441 /// Tries to infer the deployment target from the SDK specified by -isysroot
1442 /// (or SDKROOT). Uses the version specified in the SDKSettings.json file if
1443 /// it's available.
1445 inferDeploymentTargetFromSDK(DerivedArgList &Args,
1447  const Arg *A = Args.getLastArg(options::OPT_isysroot);
1448  if (!A)
1449  return None;
1450  StringRef isysroot = A->getValue();
1451  StringRef SDK = Darwin::getSDKName(isysroot);
1452  if (!SDK.size())
1453  return None;
1454 
1455  std::string Version;
1456  if (SDKInfo) {
1457  // Get the version from the SDKSettings.json if it's available.
1458  Version = SDKInfo->getVersion().getAsString();
1459  } else {
1460  // Slice the version number out.
1461  // Version number is between the first and the last number.
1462  size_t StartVer = SDK.find_first_of("0123456789");
1463  size_t EndVer = SDK.find_last_of("0123456789");
1464  if (StartVer != StringRef::npos && EndVer > StartVer)
1465  Version = SDK.slice(StartVer, EndVer + 1);
1466  }
1467  if (Version.empty())
1468  return None;
1469 
1470  if (SDK.startswith("iPhoneOS") || SDK.startswith("iPhoneSimulator"))
1471  return DarwinPlatform::createFromSDK(
1472  Darwin::IPhoneOS, Version,
1473  /*IsSimulator=*/SDK.startswith("iPhoneSimulator"));
1474  else if (SDK.startswith("MacOSX"))
1475  return DarwinPlatform::createFromSDK(Darwin::MacOS,
1476  getSystemOrSDKMacOSVersion(Version));
1477  else if (SDK.startswith("WatchOS") || SDK.startswith("WatchSimulator"))
1478  return DarwinPlatform::createFromSDK(
1479  Darwin::WatchOS, Version,
1480  /*IsSimulator=*/SDK.startswith("WatchSimulator"));
1481  else if (SDK.startswith("AppleTVOS") || SDK.startswith("AppleTVSimulator"))
1482  return DarwinPlatform::createFromSDK(
1483  Darwin::TvOS, Version,
1484  /*IsSimulator=*/SDK.startswith("AppleTVSimulator"));
1485  return None;
1486 }
1487 
1488 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
1489  const Driver &TheDriver) {
1490  unsigned Major, Minor, Micro;
1491  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1492  switch (OS) {
1493  case llvm::Triple::Darwin:
1494  case llvm::Triple::MacOSX:
1495  // If there is no version specified on triple, and both host and target are
1496  // macos, use the host triple to infer OS version.
1497  if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
1498  !Triple.getOSMajorVersion())
1499  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1500  else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
1501  TheDriver.Diag(diag::err_drv_invalid_darwin_version)
1502  << Triple.getOSName();
1503  break;
1504  case llvm::Triple::IOS:
1505  Triple.getiOSVersion(Major, Minor, Micro);
1506  break;
1507  case llvm::Triple::TvOS:
1508  Triple.getOSVersion(Major, Minor, Micro);
1509  break;
1510  case llvm::Triple::WatchOS:
1511  Triple.getWatchOSVersion(Major, Minor, Micro);
1512  break;
1513  default:
1514  llvm_unreachable("Unexpected OS type");
1515  break;
1516  }
1517 
1518  std::string OSVersion;
1519  llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
1520  return OSVersion;
1521 }
1522 
1523 /// Tries to infer the target OS from the -arch.
1525 inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
1526  const llvm::Triple &Triple,
1527  const Driver &TheDriver) {
1528  llvm::Triple::OSType OSTy = llvm::Triple::UnknownOS;
1529 
1530  StringRef MachOArchName = Toolchain.getMachOArchName(Args);
1531  if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
1532  MachOArchName == "arm64")
1533  OSTy = llvm::Triple::IOS;
1534  else if (MachOArchName == "armv7k")
1535  OSTy = llvm::Triple::WatchOS;
1536  else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
1537  MachOArchName != "armv7em")
1538  OSTy = llvm::Triple::MacOSX;
1539 
1540  if (OSTy == llvm::Triple::UnknownOS)
1541  return None;
1542  return DarwinPlatform::createFromArch(OSTy,
1543  getOSVersion(OSTy, Triple, TheDriver));
1544 }
1545 
1546 /// Returns the deployment target that's specified using the -target option.
1547 Optional<DarwinPlatform> getDeploymentTargetFromTargetArg(
1548  DerivedArgList &Args, const llvm::Triple &Triple, const Driver &TheDriver) {
1549  if (!Args.hasArg(options::OPT_target))
1550  return None;
1551  if (Triple.getOS() == llvm::Triple::Darwin ||
1552  Triple.getOS() == llvm::Triple::UnknownOS)
1553  return None;
1554  std::string OSVersion = getOSVersion(Triple.getOS(), Triple, TheDriver);
1555  return DarwinPlatform::createFromTarget(Triple, OSVersion,
1556  Args.getLastArg(options::OPT_target));
1557 }
1558 
1559 Optional<DarwinSDKInfo> parseSDKSettings(llvm::vfs::FileSystem &VFS,
1560  const ArgList &Args,
1561  const Driver &TheDriver) {
1562  const Arg *A = Args.getLastArg(options::OPT_isysroot);
1563  if (!A)
1564  return None;
1565  StringRef isysroot = A->getValue();
1566  auto SDKInfoOrErr = driver::parseDarwinSDKInfo(VFS, isysroot);
1567  if (!SDKInfoOrErr) {
1568  llvm::consumeError(SDKInfoOrErr.takeError());
1569  TheDriver.Diag(diag::warn_drv_darwin_sdk_invalid_settings);
1570  return None;
1571  }
1572  return *SDKInfoOrErr;
1573 }
1574 
1575 } // namespace
1576 
1577 void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
1578  const OptTable &Opts = getDriver().getOpts();
1579 
1580  // Support allowing the SDKROOT environment variable used by xcrun and other
1581  // Xcode tools to define the default sysroot, by making it the default for
1582  // isysroot.
1583  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1584  // Warn if the path does not exist.
1585  if (!getVFS().exists(A->getValue()))
1586  getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
1587  } else {
1588  if (char *env = ::getenv("SDKROOT")) {
1589  // We only use this value as the default if it is an absolute path,
1590  // exists, and it is not the root path.
1591  if (llvm::sys::path::is_absolute(env) && getVFS().exists(env) &&
1592  StringRef(env) != "/") {
1593  Args.append(Args.MakeSeparateArg(
1594  nullptr, Opts.getOption(options::OPT_isysroot), env));
1595  }
1596  }
1597  }
1598 
1599  // Read the SDKSettings.json file for more information, like the SDK version
1600  // that we can pass down to the compiler.
1601  SDKInfo = parseSDKSettings(getVFS(), Args, getDriver());
1602 
1603  // The OS and the version can be specified using the -target argument.
1604  Optional<DarwinPlatform> OSTarget =
1605  getDeploymentTargetFromTargetArg(Args, getTriple(), getDriver());
1606  if (OSTarget) {
1607  Optional<DarwinPlatform> OSVersionArgTarget =
1608  getDeploymentTargetFromOSVersionArg(Args, getDriver());
1609  if (OSVersionArgTarget) {
1610  unsigned TargetMajor, TargetMinor, TargetMicro;
1611  bool TargetExtra;
1612  unsigned ArgMajor, ArgMinor, ArgMicro;
1613  bool ArgExtra;
1614  if (OSTarget->getPlatform() != OSVersionArgTarget->getPlatform() ||
1615  (Driver::GetReleaseVersion(OSTarget->getOSVersion(), TargetMajor,
1616  TargetMinor, TargetMicro, TargetExtra) &&
1617  Driver::GetReleaseVersion(OSVersionArgTarget->getOSVersion(),
1618  ArgMajor, ArgMinor, ArgMicro, ArgExtra) &&
1619  (VersionTuple(TargetMajor, TargetMinor, TargetMicro) !=
1620  VersionTuple(ArgMajor, ArgMinor, ArgMicro) ||
1621  TargetExtra != ArgExtra))) {
1622  // Select the OS version from the -m<os>-version-min argument when
1623  // the -target does not include an OS version.
1624  if (OSTarget->getPlatform() == OSVersionArgTarget->getPlatform() &&
1625  !OSTarget->hasOSVersion()) {
1626  OSTarget->setOSVersion(OSVersionArgTarget->getOSVersion());
1627  } else {
1628  // Warn about -m<os>-version-min that doesn't match the OS version
1629  // that's specified in the target.
1630  std::string OSVersionArg =
1631  OSVersionArgTarget->getAsString(Args, Opts);
1632  std::string TargetArg = OSTarget->getAsString(Args, Opts);
1633  getDriver().Diag(clang::diag::warn_drv_overriding_flag_option)
1634  << OSVersionArg << TargetArg;
1635  }
1636  }
1637  }
1638  } else {
1639  // The OS target can be specified using the -m<os>version-min argument.
1640  OSTarget = getDeploymentTargetFromOSVersionArg(Args, getDriver());
1641  // If no deployment target was specified on the command line, check for
1642  // environment defines.
1643  if (!OSTarget) {
1644  OSTarget =
1645  getDeploymentTargetFromEnvironmentVariables(getDriver(), getTriple());
1646  if (OSTarget) {
1647  // Don't infer simulator from the arch when the SDK is also specified.
1648  Optional<DarwinPlatform> SDKTarget =
1649  inferDeploymentTargetFromSDK(Args, SDKInfo);
1650  if (SDKTarget)
1651  OSTarget->setEnvironment(SDKTarget->getEnvironment());
1652  }
1653  }
1654  // If there is no command-line argument to specify the Target version and
1655  // no environment variable defined, see if we can set the default based
1656  // on -isysroot using SDKSettings.json if it exists.
1657  if (!OSTarget) {
1658  OSTarget = inferDeploymentTargetFromSDK(Args, SDKInfo);
1659  /// If the target was successfully constructed from the SDK path, try to
1660  /// infer the SDK info if the SDK doesn't have it.
1661  if (OSTarget && !SDKInfo)
1662  SDKInfo = OSTarget->inferSDKInfo();
1663  }
1664  // If no OS targets have been specified, try to guess platform from -target
1665  // or arch name and compute the version from the triple.
1666  if (!OSTarget)
1667  OSTarget =
1668  inferDeploymentTargetFromArch(Args, *this, getTriple(), getDriver());
1669  }
1670 
1671  assert(OSTarget && "Unable to infer Darwin variant");
1672  OSTarget->addOSVersionMinArgument(Args, Opts);
1673  DarwinPlatformKind Platform = OSTarget->getPlatform();
1674 
1675  unsigned Major, Minor, Micro;
1676  bool HadExtra;
1677  // Set the tool chain target information.
1678  if (Platform == MacOS) {
1679  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1680  Micro, HadExtra) ||
1681  HadExtra || Major != 10 || Minor >= 100 || Micro >= 100)
1682  getDriver().Diag(diag::err_drv_invalid_version_number)
1683  << OSTarget->getAsString(Args, Opts);
1684  } else if (Platform == IPhoneOS) {
1685  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1686  Micro, HadExtra) ||
1687  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1688  getDriver().Diag(diag::err_drv_invalid_version_number)
1689  << OSTarget->getAsString(Args, Opts);
1690  ;
1691  // For 32-bit targets, the deployment target for iOS has to be earlier than
1692  // iOS 11.
1693  if (getTriple().isArch32Bit() && Major >= 11) {
1694  // If the deployment target is explicitly specified, print a diagnostic.
1695  if (OSTarget->isExplicitlySpecified()) {
1696  getDriver().Diag(diag::warn_invalid_ios_deployment_target)
1697  << OSTarget->getAsString(Args, Opts);
1698  // Otherwise, set it to 10.99.99.
1699  } else {
1700  Major = 10;
1701  Minor = 99;
1702  Micro = 99;
1703  }
1704  }
1705  } else if (Platform == TvOS) {
1706  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1707  Micro, HadExtra) ||
1708  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1709  getDriver().Diag(diag::err_drv_invalid_version_number)
1710  << OSTarget->getAsString(Args, Opts);
1711  } else if (Platform == WatchOS) {
1712  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1713  Micro, HadExtra) ||
1714  HadExtra || Major >= 10 || Minor >= 100 || Micro >= 100)
1715  getDriver().Diag(diag::err_drv_invalid_version_number)
1716  << OSTarget->getAsString(Args, Opts);
1717  } else
1718  llvm_unreachable("unknown kind of Darwin platform");
1719 
1720  DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
1721  // Recognize iOS targets with an x86 architecture as the iOS simulator.
1722  if (Environment == NativeEnvironment && Platform != MacOS &&
1723  OSTarget->canInferSimulatorFromArch() &&
1724  (getTriple().getArch() == llvm::Triple::x86 ||
1725  getTriple().getArch() == llvm::Triple::x86_64))
1726  Environment = Simulator;
1727 
1728  setTarget(Platform, Environment, Major, Minor, Micro);
1729 
1730  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1731  StringRef SDK = getSDKName(A->getValue());
1732  if (SDK.size() > 0) {
1733  size_t StartVer = SDK.find_first_of("0123456789");
1734  StringRef SDKName = SDK.slice(0, StartVer);
1735  if (!SDKName.startswith(getPlatformFamily()))
1736  getDriver().Diag(diag::warn_incompatible_sysroot)
1737  << SDKName << getPlatformFamily();
1738  }
1739  }
1740 }
1741 
1743  const llvm::opt::ArgList &DriverArgs,
1744  llvm::opt::ArgStringList &CC1Args) const {
1745  // The implementation from a base class will pass through the -stdlib to
1746  // CC1Args.
1747  // FIXME: this should not be necessary, remove usages in the frontend
1748  // (e.g. HeaderSearchOptions::UseLibcxx) and don't pipe -stdlib.
1749  ToolChain::AddClangCXXStdlibIncludeArgs(DriverArgs, CC1Args);
1750 
1751  if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
1752  DriverArgs.hasArg(options::OPT_nostdincxx))
1753  return;
1754 
1755  switch (GetCXXStdlibType(DriverArgs)) {
1756  case ToolChain::CST_Libcxx: {
1757  llvm::StringRef InstallDir = getDriver().getInstalledDir();
1758  if (InstallDir.empty())
1759  break;
1760  // On Darwin, libc++ may be installed alongside the compiler in
1761  // include/c++/v1.
1762  // Get from 'foo/bin' to 'foo/include/c++/v1'.
1763  SmallString<128> P = InstallDir;
1764  // Note that InstallDir can be relative, so we have to '..' and not
1765  // parent_path.
1766  llvm::sys::path::append(P, "..", "include", "c++", "v1");
1767  addSystemInclude(DriverArgs, CC1Args, P);
1768  break;
1769  }
1771  // FIXME: should we do something about it?
1772  break;
1773  }
1774 }
1775 void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
1776  ArgStringList &CmdArgs) const {
1778 
1779  switch (Type) {
1780  case ToolChain::CST_Libcxx:
1781  CmdArgs.push_back("-lc++");
1782  break;
1783 
1785  // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
1786  // it was previously found in the gcc lib dir. However, for all the Darwin
1787  // platforms we care about it was -lstdc++.6, so we search for that
1788  // explicitly if we can't see an obvious -lstdc++ candidate.
1789 
1790  // Check in the sysroot first.
1791  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1792  SmallString<128> P(A->getValue());
1793  llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
1794 
1795  if (!getVFS().exists(P)) {
1796  llvm::sys::path::remove_filename(P);
1797  llvm::sys::path::append(P, "libstdc++.6.dylib");
1798  if (getVFS().exists(P)) {
1799  CmdArgs.push_back(Args.MakeArgString(P));
1800  return;
1801  }
1802  }
1803  }
1804 
1805  // Otherwise, look in the root.
1806  // FIXME: This should be removed someday when we don't have to care about
1807  // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
1808  if (!getVFS().exists("/usr/lib/libstdc++.dylib") &&
1809  getVFS().exists("/usr/lib/libstdc++.6.dylib")) {
1810  CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
1811  return;
1812  }
1813 
1814  // Otherwise, let the linker search.
1815  CmdArgs.push_back("-lstdc++");
1816  break;
1817  }
1818 }
1819 
1820 void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
1821  ArgStringList &CmdArgs) const {
1822  // For Darwin platforms, use the compiler-rt-based support library
1823  // instead of the gcc-provided one (which is also incidentally
1824  // only present in the gcc lib dir, which makes it hard to find).
1825 
1826  SmallString<128> P(getDriver().ResourceDir);
1827  llvm::sys::path::append(P, "lib", "darwin");
1828 
1829  // Use the newer cc_kext for iOS ARM after 6.0.
1830  if (isTargetWatchOS()) {
1831  llvm::sys::path::append(P, "libclang_rt.cc_kext_watchos.a");
1832  } else if (isTargetTvOS()) {
1833  llvm::sys::path::append(P, "libclang_rt.cc_kext_tvos.a");
1834  } else if (isTargetIPhoneOS()) {
1835  llvm::sys::path::append(P, "libclang_rt.cc_kext_ios.a");
1836  } else {
1837  llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
1838  }
1839 
1840  // For now, allow missing resource libraries to support developers who may
1841  // not have compiler-rt checked out or integrated into their build.
1842  if (getVFS().exists(P))
1843  CmdArgs.push_back(Args.MakeArgString(P));
1844 }
1845 
1846 DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
1847  StringRef BoundArch,
1848  Action::OffloadKind) const {
1849  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
1850  const OptTable &Opts = getDriver().getOpts();
1851 
1852  // FIXME: We really want to get out of the tool chain level argument
1853  // translation business, as it makes the driver functionality much
1854  // more opaque. For now, we follow gcc closely solely for the
1855  // purpose of easily achieving feature parity & testability. Once we
1856  // have something that works, we should reevaluate each translation
1857  // and try to push it down into tool specific logic.
1858 
1859  for (Arg *A : Args) {
1860  if (A->getOption().matches(options::OPT_Xarch__)) {
1861  // Skip this argument unless the architecture matches either the toolchain
1862  // triple arch, or the arch being bound.
1863  llvm::Triple::ArchType XarchArch =
1865  if (!(XarchArch == getArch() ||
1866  (!BoundArch.empty() &&
1867  XarchArch ==
1869  continue;
1870 
1871  Arg *OriginalArg = A;
1872  unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
1873  unsigned Prev = Index;
1874  std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
1875 
1876  // If the argument parsing failed or more than one argument was
1877  // consumed, the -Xarch_ argument's parameter tried to consume
1878  // extra arguments. Emit an error and ignore.
1879  //
1880  // We also want to disallow any options which would alter the
1881  // driver behavior; that isn't going to work in our model. We
1882  // use isDriverOption() as an approximation, although things
1883  // like -O4 are going to slip through.
1884  if (!XarchArg || Index > Prev + 1) {
1885  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
1886  << A->getAsString(Args);
1887  continue;
1888  } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
1889  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
1890  << A->getAsString(Args);
1891  continue;
1892  }
1893 
1894  XarchArg->setBaseArg(A);
1895 
1896  A = XarchArg.release();
1897  DAL->AddSynthesizedArg(A);
1898 
1899  // Linker input arguments require custom handling. The problem is that we
1900  // have already constructed the phase actions, so we can not treat them as
1901  // "input arguments".
1902  if (A->getOption().hasFlag(options::LinkerInput)) {
1903  // Convert the argument into individual Zlinker_input_args.
1904  for (const char *Value : A->getValues()) {
1905  DAL->AddSeparateArg(
1906  OriginalArg, Opts.getOption(options::OPT_Zlinker_input), Value);
1907  }
1908  continue;
1909  }
1910  }
1911 
1912  // Sob. These is strictly gcc compatible for the time being. Apple
1913  // gcc translates options twice, which means that self-expanding
1914  // options add duplicates.
1915  switch ((options::ID)A->getOption().getID()) {
1916  default:
1917  DAL->append(A);
1918  break;
1919 
1920  case options::OPT_mkernel:
1921  case options::OPT_fapple_kext:
1922  DAL->append(A);
1923  DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
1924  break;
1925 
1926  case options::OPT_dependency_file:
1927  DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), A->getValue());
1928  break;
1929 
1930  case options::OPT_gfull:
1931  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1932  DAL->AddFlagArg(
1933  A, Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
1934  break;
1935 
1936  case options::OPT_gused:
1937  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1938  DAL->AddFlagArg(
1939  A, Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
1940  break;
1941 
1942  case options::OPT_shared:
1943  DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
1944  break;
1945 
1946  case options::OPT_fconstant_cfstrings:
1947  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
1948  break;
1949 
1950  case options::OPT_fno_constant_cfstrings:
1951  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
1952  break;
1953 
1954  case options::OPT_Wnonportable_cfstrings:
1955  DAL->AddFlagArg(A,
1956  Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
1957  break;
1958 
1959  case options::OPT_Wno_nonportable_cfstrings:
1960  DAL->AddFlagArg(
1961  A, Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
1962  break;
1963 
1964  case options::OPT_fpascal_strings:
1965  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
1966  break;
1967 
1968  case options::OPT_fno_pascal_strings:
1969  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
1970  break;
1971  }
1972  }
1973 
1974  if (getTriple().getArch() == llvm::Triple::x86 ||
1975  getTriple().getArch() == llvm::Triple::x86_64)
1976  if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
1977  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
1978  "core2");
1979 
1980  // Add the arch options based on the particular spelling of -arch, to match
1981  // how the driver driver works.
1982  if (!BoundArch.empty()) {
1983  StringRef Name = BoundArch;
1984  const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
1985  const Option MArch = Opts.getOption(clang::driver::options::OPT_march_EQ);
1986 
1987  // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
1988  // which defines the list of which architectures we accept.
1989  if (Name == "ppc")
1990  ;
1991  else if (Name == "ppc601")
1992  DAL->AddJoinedArg(nullptr, MCpu, "601");
1993  else if (Name == "ppc603")
1994  DAL->AddJoinedArg(nullptr, MCpu, "603");
1995  else if (Name == "ppc604")
1996  DAL->AddJoinedArg(nullptr, MCpu, "604");
1997  else if (Name == "ppc604e")
1998  DAL->AddJoinedArg(nullptr, MCpu, "604e");
1999  else if (Name == "ppc750")
2000  DAL->AddJoinedArg(nullptr, MCpu, "750");
2001  else if (Name == "ppc7400")
2002  DAL->AddJoinedArg(nullptr, MCpu, "7400");
2003  else if (Name == "ppc7450")
2004  DAL->AddJoinedArg(nullptr, MCpu, "7450");
2005  else if (Name == "ppc970")
2006  DAL->AddJoinedArg(nullptr, MCpu, "970");
2007 
2008  else if (Name == "ppc64" || Name == "ppc64le")
2009  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2010 
2011  else if (Name == "i386")
2012  ;
2013  else if (Name == "i486")
2014  DAL->AddJoinedArg(nullptr, MArch, "i486");
2015  else if (Name == "i586")
2016  DAL->AddJoinedArg(nullptr, MArch, "i586");
2017  else if (Name == "i686")
2018  DAL->AddJoinedArg(nullptr, MArch, "i686");
2019  else if (Name == "pentium")
2020  DAL->AddJoinedArg(nullptr, MArch, "pentium");
2021  else if (Name == "pentium2")
2022  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2023  else if (Name == "pentpro")
2024  DAL->AddJoinedArg(nullptr, MArch, "pentiumpro");
2025  else if (Name == "pentIIm3")
2026  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2027 
2028  else if (Name == "x86_64" || Name == "x86_64h")
2029  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2030 
2031  else if (Name == "arm")
2032  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2033  else if (Name == "armv4t")
2034  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2035  else if (Name == "armv5")
2036  DAL->AddJoinedArg(nullptr, MArch, "armv5tej");
2037  else if (Name == "xscale")
2038  DAL->AddJoinedArg(nullptr, MArch, "xscale");
2039  else if (Name == "armv6")
2040  DAL->AddJoinedArg(nullptr, MArch, "armv6k");
2041  else if (Name == "armv6m")
2042  DAL->AddJoinedArg(nullptr, MArch, "armv6m");
2043  else if (Name == "armv7")
2044  DAL->AddJoinedArg(nullptr, MArch, "armv7a");
2045  else if (Name == "armv7em")
2046  DAL->AddJoinedArg(nullptr, MArch, "armv7em");
2047  else if (Name == "armv7k")
2048  DAL->AddJoinedArg(nullptr, MArch, "armv7k");
2049  else if (Name == "armv7m")
2050  DAL->AddJoinedArg(nullptr, MArch, "armv7m");
2051  else if (Name == "armv7s")
2052  DAL->AddJoinedArg(nullptr, MArch, "armv7s");
2053  }
2054 
2055  return DAL;
2056 }
2057 
2058 void MachO::AddLinkRuntimeLibArgs(const ArgList &Args,
2059  ArgStringList &CmdArgs) const {
2060  // Embedded targets are simple at the moment, not supporting sanitizers and
2061  // with different libraries for each member of the product { static, PIC } x
2062  // { hard-float, soft-float }
2063  llvm::SmallString<32> CompilerRT = StringRef("");
2064  CompilerRT +=
2066  ? "hard"
2067  : "soft";
2068  CompilerRT += Args.hasArg(options::OPT_fPIC) ? "_pic" : "_static";
2069 
2070  AddLinkRuntimeLib(Args, CmdArgs, CompilerRT, RLO_IsEmbedded);
2071 }
2072 
2074  llvm::Triple::OSType OS;
2075 
2076  switch (TargetPlatform) {
2077  case MacOS: // Earlier than 10.13.
2078  OS = llvm::Triple::MacOSX;
2079  break;
2080  case IPhoneOS:
2081  OS = llvm::Triple::IOS;
2082  break;
2083  case TvOS: // Earlier than 11.0.
2084  OS = llvm::Triple::TvOS;
2085  break;
2086  case WatchOS: // Earlier than 4.0.
2087  OS = llvm::Triple::WatchOS;
2088  break;
2089  }
2090 
2092 }
2093 
2094 void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
2095  llvm::opt::ArgStringList &CC1Args,
2096  Action::OffloadKind DeviceOffloadKind) const {
2097  // Pass "-faligned-alloc-unavailable" only when the user hasn't manually
2098  // enabled or disabled aligned allocations.
2099  if (!DriverArgs.hasArgNoClaim(options::OPT_faligned_allocation,
2100  options::OPT_fno_aligned_allocation) &&
2102  CC1Args.push_back("-faligned-alloc-unavailable");
2103 
2104  if (SDKInfo) {
2105  /// Pass the SDK version to the compiler when the SDK information is
2106  /// available.
2107  std::string Arg;
2108  llvm::raw_string_ostream OS(Arg);
2109  OS << "-target-sdk-version=" << SDKInfo->getVersion();
2110  CC1Args.push_back(DriverArgs.MakeArgString(OS.str()));
2111  }
2112 }
2113 
2114 DerivedArgList *
2115 Darwin::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
2116  Action::OffloadKind DeviceOffloadKind) const {
2117  // First get the generic Apple args, before moving onto Darwin-specific ones.
2118  DerivedArgList *DAL =
2119  MachO::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
2120  const OptTable &Opts = getDriver().getOpts();
2121 
2122  // If no architecture is bound, none of the translations here are relevant.
2123  if (BoundArch.empty())
2124  return DAL;
2125 
2126  // Add an explicit version min argument for the deployment target. We do this
2127  // after argument translation because -Xarch_ arguments may add a version min
2128  // argument.
2129  AddDeploymentTarget(*DAL);
2130 
2131  // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
2132  // FIXME: It would be far better to avoid inserting those -static arguments,
2133  // but we can't check the deployment target in the translation code until
2134  // it is set here.
2135  if (isTargetWatchOSBased() ||
2136  (isTargetIOSBased() && !isIPhoneOSVersionLT(6, 0))) {
2137  for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
2138  Arg *A = *it;
2139  ++it;
2140  if (A->getOption().getID() != options::OPT_mkernel &&
2141  A->getOption().getID() != options::OPT_fapple_kext)
2142  continue;
2143  assert(it != ie && "unexpected argument translation");
2144  A = *it;
2145  assert(A->getOption().getID() == options::OPT_static &&
2146  "missing expected -static argument");
2147  *it = nullptr;
2148  ++it;
2149  }
2150  }
2151 
2152  if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
2154  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
2155  "libc++");
2156 
2157  // Validate the C++ standard library choice.
2159  if (Type == ToolChain::CST_Libcxx) {
2160  // Check whether the target provides libc++.
2161  StringRef where;
2162 
2163  // Complain about targeting iOS < 5.0 in any way.
2164  if (isTargetIOSBased() && isIPhoneOSVersionLT(5, 0))
2165  where = "iOS 5.0";
2166 
2167  if (where != StringRef()) {
2168  getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) << where;
2169  }
2170  }
2171 
2172  auto Arch = tools::darwin::getArchTypeForMachOArchName(BoundArch);
2173  if ((Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)) {
2174  if (Args.hasFlag(options::OPT_fomit_frame_pointer,
2175  options::OPT_fno_omit_frame_pointer, false))
2176  getDriver().Diag(clang::diag::warn_drv_unsupported_opt_for_target)
2177  << "-fomit-frame-pointer" << BoundArch;
2178  }
2179 
2180  return DAL;
2181 }
2182 
2183 bool MachO::IsUnwindTablesDefault(const ArgList &Args) const {
2184  // Unwind tables are not emitted if -fno-exceptions is supplied (except when
2185  // targeting x86_64).
2186  return getArch() == llvm::Triple::x86_64 ||
2187  (GetExceptionModel(Args) != llvm::ExceptionHandling::SjLj &&
2188  Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
2189  true));
2190 }
2191 
2193  if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
2194  return S[0] != '\0';
2195  return false;
2196 }
2197 
2198 llvm::ExceptionHandling Darwin::GetExceptionModel(const ArgList &Args) const {
2199  // Darwin uses SjLj exceptions on ARM.
2200  if (getTriple().getArch() != llvm::Triple::arm &&
2201  getTriple().getArch() != llvm::Triple::thumb)
2203 
2204  // Only watchOS uses the new DWARF/Compact unwinding method.
2205  llvm::Triple Triple(ComputeLLVMTriple(Args));
2206  if (Triple.isWatchABI())
2207  return llvm::ExceptionHandling::DwarfCFI;
2208 
2209  return llvm::ExceptionHandling::SjLj;
2210 }
2211 
2213  assert(TargetInitialized && "Target not initialized!");
2214  if (isTargetIPhoneOS() && isIPhoneOSVersionLT(6, 0))
2215  return false;
2216  return true;
2217 }
2218 
2219 bool MachO::isPICDefault() const { return true; }
2220 
2221 bool MachO::isPIEDefault() const { return false; }
2222 
2224  return (getArch() == llvm::Triple::x86_64 ||
2225  getArch() == llvm::Triple::aarch64);
2226 }
2227 
2229  // Profiling instrumentation is only supported on x86.
2230  return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
2231 }
2232 
2233 void Darwin::addMinVersionArgs(const ArgList &Args,
2234  ArgStringList &CmdArgs) const {
2235  VersionTuple TargetVersion = getTargetVersion();
2236 
2237  if (isTargetWatchOS())
2238  CmdArgs.push_back("-watchos_version_min");
2239  else if (isTargetWatchOSSimulator())
2240  CmdArgs.push_back("-watchos_simulator_version_min");
2241  else if (isTargetTvOS())
2242  CmdArgs.push_back("-tvos_version_min");
2243  else if (isTargetTvOSSimulator())
2244  CmdArgs.push_back("-tvos_simulator_version_min");
2245  else if (isTargetIOSSimulator())
2246  CmdArgs.push_back("-ios_simulator_version_min");
2247  else if (isTargetIOSBased())
2248  CmdArgs.push_back("-iphoneos_version_min");
2249  else {
2250  assert(isTargetMacOS() && "unexpected target");
2251  CmdArgs.push_back("-macosx_version_min");
2252  }
2253 
2254  CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
2255 }
2256 
2257 void Darwin::addStartObjectFileArgs(const ArgList &Args,
2258  ArgStringList &CmdArgs) const {
2259  // Derived from startfile spec.
2260  if (Args.hasArg(options::OPT_dynamiclib)) {
2261  // Derived from darwin_dylib1 spec.
2262  if (isTargetWatchOSBased()) {
2263  ; // watchOS does not need dylib1.o.
2264  } else if (isTargetIOSSimulator()) {
2265  ; // iOS simulator does not need dylib1.o.
2266  } else if (isTargetIPhoneOS()) {
2267  if (isIPhoneOSVersionLT(3, 1))
2268  CmdArgs.push_back("-ldylib1.o");
2269  } else {
2270  if (isMacosxVersionLT(10, 5))
2271  CmdArgs.push_back("-ldylib1.o");
2272  else if (isMacosxVersionLT(10, 6))
2273  CmdArgs.push_back("-ldylib1.10.5.o");
2274  }
2275  } else {
2276  if (Args.hasArg(options::OPT_bundle)) {
2277  if (!Args.hasArg(options::OPT_static)) {
2278  // Derived from darwin_bundle1 spec.
2279  if (isTargetWatchOSBased()) {
2280  ; // watchOS does not need bundle1.o.
2281  } else if (isTargetIOSSimulator()) {
2282  ; // iOS simulator does not need bundle1.o.
2283  } else if (isTargetIPhoneOS()) {
2284  if (isIPhoneOSVersionLT(3, 1))
2285  CmdArgs.push_back("-lbundle1.o");
2286  } else {
2287  if (isMacosxVersionLT(10, 6))
2288  CmdArgs.push_back("-lbundle1.o");
2289  }
2290  }
2291  } else {
2292  if (Args.hasArg(options::OPT_pg) && SupportsProfiling()) {
2293  if (Args.hasArg(options::OPT_static) ||
2294  Args.hasArg(options::OPT_object) ||
2295  Args.hasArg(options::OPT_preload)) {
2296  CmdArgs.push_back("-lgcrt0.o");
2297  } else {
2298  CmdArgs.push_back("-lgcrt1.o");
2299 
2300  // darwin_crt2 spec is empty.
2301  }
2302  // By default on OS X 10.8 and later, we don't link with a crt1.o
2303  // file and the linker knows to use _main as the entry point. But,
2304  // when compiling with -pg, we need to link with the gcrt1.o file,
2305  // so pass the -no_new_main option to tell the linker to use the
2306  // "start" symbol as the entry point.
2307  if (isTargetMacOS() && !isMacosxVersionLT(10, 8))
2308  CmdArgs.push_back("-no_new_main");
2309  } else {
2310  if (Args.hasArg(options::OPT_static) ||
2311  Args.hasArg(options::OPT_object) ||
2312  Args.hasArg(options::OPT_preload)) {
2313  CmdArgs.push_back("-lcrt0.o");
2314  } else {
2315  // Derived from darwin_crt1 spec.
2316  if (isTargetWatchOSBased()) {
2317  ; // watchOS does not need crt1.o.
2318  } else if (isTargetIOSSimulator()) {
2319  ; // iOS simulator does not need crt1.o.
2320  } else if (isTargetIPhoneOS()) {
2321  if (getArch() == llvm::Triple::aarch64)
2322  ; // iOS does not need any crt1 files for arm64
2323  else if (isIPhoneOSVersionLT(3, 1))
2324  CmdArgs.push_back("-lcrt1.o");
2325  else if (isIPhoneOSVersionLT(6, 0))
2326  CmdArgs.push_back("-lcrt1.3.1.o");
2327  } else {
2328  if (isMacosxVersionLT(10, 5))
2329  CmdArgs.push_back("-lcrt1.o");
2330  else if (isMacosxVersionLT(10, 6))
2331  CmdArgs.push_back("-lcrt1.10.5.o");
2332  else if (isMacosxVersionLT(10, 8))
2333  CmdArgs.push_back("-lcrt1.10.6.o");
2334 
2335  // darwin_crt2 spec is empty.
2336  }
2337  }
2338  }
2339  }
2340  }
2341 
2342  if (!isTargetIPhoneOS() && Args.hasArg(options::OPT_shared_libgcc) &&
2343  !isTargetWatchOS() && isMacosxVersionLT(10, 5)) {
2344  const char *Str = Args.MakeArgString(GetFilePath("crt3.o"));
2345  CmdArgs.push_back(Str);
2346  }
2347 }
2348 
2349 void Darwin::CheckObjCARC() const {
2351  (isTargetMacOS() && !isMacosxVersionLT(10, 6)))
2352  return;
2353  getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
2354 }
2355 
2357  const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
2359  Res |= SanitizerKind::Address;
2360  Res |= SanitizerKind::Leak;
2361  Res |= SanitizerKind::Fuzzer;
2362  Res |= SanitizerKind::FuzzerNoLink;
2363  Res |= SanitizerKind::Function;
2364 
2365  // Prior to 10.9, macOS shipped a version of the C++ standard library without
2366  // C++11 support. The same is true of iOS prior to version 5. These OS'es are
2367  // incompatible with -fsanitize=vptr.
2368  if (!(isTargetMacOS() && isMacosxVersionLT(10, 9))
2369  && !(isTargetIPhoneOS() && isIPhoneOSVersionLT(5, 0)))
2370  Res |= SanitizerKind::Vptr;
2371 
2372  if (isTargetMacOS()) {
2373  if (IsX86_64)
2374  Res |= SanitizerKind::Thread;
2375  } else if (isTargetIOSSimulator() || isTargetTvOSSimulator()) {
2376  if (IsX86_64)
2377  Res |= SanitizerKind::Thread;
2378  }
2379  return Res;
2380 }
2381 
2382 void Darwin::printVerboseInfo(raw_ostream &OS) const {
2383  CudaInstallation.print(OS);
2384 }
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:4692
StringRef getMachOArchName(const llvm::opt::ArgList &Args) const
Get the "MachO" arch name for a particular compiler invocation.
Definition: Darwin.cpp:778
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:520
bool SupportsEmbeddedBitcode() const override
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: Darwin.cpp:2212
bool isMacosxVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:415
Tool * buildAssembler() const override
Definition: Darwin.cpp:849
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:4471
Link the library in even if it can&#39;t be found in the VFS.
Definition: Darwin.h:180
Use the embedded runtime from the macho_embedded directory.
Definition: Darwin.h:183
const char * getTypeTempSuffix(ID Id, bool CLMode=false)
getTypeTempSuffix - Return the suffix to use when creating a temp file of this type, or null if unspecified.
Definition: Types.cpp:55
bool UseDwarfDebugFlags() const override
UseDwarfDebugFlags - Embed the compile options to clang into the Dwarf compile unit information...
Definition: Darwin.cpp:2192
StringRef P
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:520
Defines types useful for describing an Objective-C runtime.
CXXStdlibType GetDefaultCXXStdlibType() const override
Definition: Darwin.cpp:700
The base class of the type hierarchy.
Definition: Type.h:1407
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:122
virtual void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: ToolChain.cpp:741
void AddLinkRuntimeLib(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, StringRef Component, RuntimeLinkOptions Opts=RuntimeLinkOptions(), bool IsShared=false) const
Add a runtime library to the list of items to link.
Definition: Darwin.cpp:917
bool HasNativeLLVMSupport() const override
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: Darwin.cpp:698
bool embedBitcodeEnabled() const
Definition: Driver.h:328
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:523
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:109
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:428
void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add any profiling runtime libraries that are needed.
Definition: Darwin.cpp:1033
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
DarwinEnvironmentKind TargetEnvironment
Definition: Darwin.h:287
CudaInstallationDetector CudaInstallation
Definition: Darwin.h:295
bool TargetInitialized
Whether the information on the target has been initialized.
Definition: Darwin.h:272
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:274
bool hasBlocksRuntime() const override
Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
Definition: Darwin.cpp:722
types::ID LookupTypeForExtension(StringRef Ext) const override
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: Darwin.cpp:688
&#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:227
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Darwin.cpp:2221
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:330
ActionList & getInputs()
Definition: Action.h:143
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: Darwin.cpp:2183
StringRef getPlatformFamily() const
Definition: Darwin.cpp:968
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:120
Darwin - The base Darwin tool chain.
Definition: Darwin.h:265
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:1078
ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const override
Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
Definition: Darwin.cpp:711
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Darwin.cpp:2219
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:405
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:1846
The information about the darwin SDK that was used during this compilation.
Definition: DarwinSDKInfo.h:22
Tool * getTool(Action::ActionClass AC) const override
Definition: Darwin.cpp:828
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:1013
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:431
types::ID getType() const
Definition: Action.h:141
CompileCommand Cmd
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:58
bool needsXRayRt() const
Definition: XRayArgs.h:41
types::ID getType() const
Definition: InputInfo.h:78
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Darwin.cpp:2356
bool isTargetInitialized() const
Definition: Darwin.h:402
void AddMachOArch(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.cpp:154
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Darwin.cpp:2223
StringRef getPlatform() const
Definition: ToolChain.h:204
llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const override
GetExceptionModel - Return the tool chain exception model.
Definition: Darwin.cpp:2198
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:684
&#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:2382
Defines a function that returns the minimum OS versions supporting C++17&#39;s aligned allocation functio...
Expected< Optional< DarwinSDKInfo > > parseDarwinSDKInfo(llvm::vfs::FileSystem &VFS, StringRef SDKRootPath)
Parse the SDK information from the SDKSettings.json file.
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:71
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:2094
ActionClass getKind() const
Definition: Action.h:140
bool isTargetWatchOSBased() const
Definition: Darwin.h:392
std::string GetTemporaryDirectory(StringRef Prefix) const
GetTemporaryDirectory - Return the pathname of a temporary directory to use as part of compilation; t...
Definition: Driver.cpp:4482
&#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:1028
virtual bool SupportsEmbeddedBitcode() const
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: ToolChain.h:454
void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: Darwin.cpp:1742
VersionTuple TargetVersion
The OS version we are targeting.
Definition: Darwin.h:290
static const char * ArmMachOArchNameCPU(StringRef CPU)
Definition: Darwin.cpp:759
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:733
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
bool isTargetIOSSimulator() const
Definition: Darwin.h:356
llvm::Triple::ArchType getArchTypeForMachOArchName(StringRef Str)
Definition: Darwin.cpp:34
unsigned GetDefaultDwarfVersion() const override
Definition: Darwin.cpp:909
virtual void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.h:167
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:202
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Cuda.cpp:231
Link the library in before any others.
Definition: Darwin.h:189
static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion)
Returns the most appropriate macOS target version for the current process.
Definition: Darwin.cpp:1150
#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:2115
bool SupportsProfiling() const override
SupportsProfiling - Does this tool chain support -pg.
Definition: Darwin.cpp:2228
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:187
VersionTuple getTargetVersion() const
Definition: Darwin.h:404
const Driver & getDriver() const
Definition: ToolChain.h:186
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:804
bool isTargetIOSBased() const
Is the target either iOS or an iOS simulator?
Definition: Darwin.h:175
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:702
DarwinClang(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Darwin.cpp:853
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
constexpr XRayInstrMask None
Definition: XRayInstr.h:38
Optional< DarwinSDKInfo > SDKInfo
The information about the darwin SDK that was used.
Definition: Darwin.h:293
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:102
void addStartObjectFileArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2257
static const char * ArmMachOArchName(StringRef Arch)
Definition: Darwin.cpp:742
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:872
DarwinPlatformKind TargetPlatform
Definition: Darwin.h:286
Dataflow Directional Tag Classes.
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:652
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:632
static StringRef getSDKName(StringRef isysroot)
Definition: Darwin.cpp:982
void CheckObjCARC() const override
Complain if this tool chain doesn&#39;t support Objective-C ARC.
Definition: Darwin.cpp:2349
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
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:2058
StringRef getOSLibraryNameSuffix(bool IgnoreSim=false) const override
Definition: Darwin.cpp:995
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
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:116
void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2233
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:1775
const char * getInstalledDir() const
Get the path to where the clang executable was installed.
Definition: Driver.h:316
&#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
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:226
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:178
const llvm::Triple & getTriple() const
Definition: ToolChain.h:188
Tool * buildLinker() const override
Definition: Darwin.cpp:847
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:818
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:289
Emit rpaths for as well as the resource directory.
Definition: Darwin.h:186
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Add warning options that need to be passed to cc1 for this target.
Definition: Darwin.cpp:857
bool isTargetWatchOSSimulator() const
Definition: Darwin.h:387
bool isFilename() const
Definition: InputInfo.h:76
static bool needsGCovInstrumentation(const llvm::opt::ArgList &Args)
Returns true if gcov instrumentation (-fprofile-arcs or –coverage) is on.
Definition: ToolChain.cpp:417
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:293
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:683
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:1066
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:420
bool isTargetTvOSSimulator() const
Definition: Darwin.h:372
bool isIPhoneOSVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:409
bool hasSubscripting() const
Does this runtime directly support the subscripting methods?
Definition: ObjCRuntime.h:282
void setTarget(DarwinPlatformKind Platform, DarwinEnvironmentKind Environment, unsigned Major, unsigned Minor, unsigned Micro) const
Definition: Darwin.h:332
bool empty() const
Definition: Job.h:194
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:610
bool isAlignedAllocationUnavailable() const
Return true if c++17 aligned allocation/deallocation functions are not implemented in the c++ standar...
Definition: Darwin.cpp:2073
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:1820
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:89