1 //===--- AIX.cpp - AIX ToolChain Implementations ----------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "AIX.h"
10 #include "clang/Driver/CommonArgs.h"
11 #include "clang/Driver/Compilation.h"
12 #include "clang/Driver/Options.h"
13 #include "clang/Driver/SanitizerArgs.h"
14 #include "llvm/ADT/StringExtras.h"
15 #include "llvm/Option/ArgList.h"
16 #include "llvm/ProfileData/InstrProf.h"
17 #include "llvm/Support/Path.h"
18
19 #include <set>
20
21 using AIX = clang::driver::toolchains::AIX;
22 using namespace clang::driver;
23 using namespace clang::driver::tools;
24 using namespace clang::driver::toolchains;
25
26 using namespace llvm::opt;
27 using namespace llvm::sys;
28
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const29 void aix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
30 const InputInfo &Output,
31 const InputInfoList &Inputs,
32 const ArgList &Args,
33 const char *LinkingOutput) const {
34 const Driver &D = getToolChain().getDriver();
35 ArgStringList CmdArgs;
36
37 const bool IsArch32Bit = getToolChain().getTriple().isArch32Bit();
38 const bool IsArch64Bit = getToolChain().getTriple().isArch64Bit();
39 // Only support 32 and 64 bit.
40 if (!IsArch32Bit && !IsArch64Bit)
41 llvm_unreachable("Unsupported bit width value.");
42
43 if (Arg *A = C.getArgs().getLastArg(options::OPT_G)) {
44 D.Diag(diag::err_drv_unsupported_opt_for_target)
45 << A->getSpelling() << D.getTargetTriple();
46 }
47
48 // Specify the mode in which the as(1) command operates.
49 if (IsArch32Bit) {
50 CmdArgs.push_back("-a32");
51 } else {
52 // Must be 64-bit, otherwise asserted already.
53 CmdArgs.push_back("-a64");
54 }
55
56 // Accept any mixture of instructions.
57 // On Power for AIX and Linux, this behaviour matches that of GCC for both the
58 // user-provided assembler source case and the compiler-produced assembler
59 // source case. Yet XL with user-provided assembler source would not add this.
60 CmdArgs.push_back("-many");
61
62 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
63
64 // Specify assembler output file.
65 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
66 if (Output.isFilename()) {
67 CmdArgs.push_back("-o");
68 CmdArgs.push_back(Output.getFilename());
69 }
70
71 // Specify assembler input file.
72 // The system assembler on AIX takes exactly one input file. The driver is
73 // expected to invoke as(1) separately for each assembler source input file.
74 if (Inputs.size() != 1)
75 llvm_unreachable("Invalid number of input files.");
76 const InputInfo &II = Inputs[0];
77 assert((II.isFilename() || II.isNothing()) && "Invalid input.");
78 if (II.isFilename())
79 CmdArgs.push_back(II.getFilename());
80
81 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
82 C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
83 Exec, CmdArgs, Inputs, Output));
84 }
85
86 // Determine whether there are any linker options that supply an export list
87 // (or equivalent information about what to export) being sent to the linker.
hasExportListLinkerOpts(const ArgStringList & CmdArgs)88 static bool hasExportListLinkerOpts(const ArgStringList &CmdArgs) {
89 for (size_t i = 0, Size = CmdArgs.size(); i < Size; ++i) {
90 llvm::StringRef ArgString(CmdArgs[i]);
91
92 if (ArgString.starts_with("-bE:") || ArgString.starts_with("-bexport:") ||
93 ArgString == "-bexpall" || ArgString == "-bexpfull")
94 return true;
95
96 // If we split -b option, check the next opt.
97 if (ArgString == "-b" && i + 1 < Size) {
98 ++i;
99 llvm::StringRef ArgNextString(CmdArgs[i]);
100 if (ArgNextString.starts_with("E:") ||
101 ArgNextString.starts_with("export:") || ArgNextString == "expall" ||
102 ArgNextString == "expfull")
103 return true;
104 }
105 }
106 return false;
107 }
108
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const109 void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
110 const InputInfo &Output,
111 const InputInfoList &Inputs, const ArgList &Args,
112 const char *LinkingOutput) const {
113 const AIX &ToolChain = static_cast<const AIX &>(getToolChain());
114 const Driver &D = ToolChain.getDriver();
115 ArgStringList CmdArgs;
116
117 const bool IsArch32Bit = ToolChain.getTriple().isArch32Bit();
118 const bool IsArch64Bit = ToolChain.getTriple().isArch64Bit();
119 // Only support 32 and 64 bit.
120 if (!(IsArch32Bit || IsArch64Bit))
121 llvm_unreachable("Unsupported bit width value.");
122
123 if (Arg *A = C.getArgs().getLastArg(options::OPT_G)) {
124 D.Diag(diag::err_drv_unsupported_opt_for_target)
125 << A->getSpelling() << D.getTargetTriple();
126 }
127
128 // Force static linking when "-static" is present.
129 if (Args.hasArg(options::OPT_static))
130 CmdArgs.push_back("-bnso");
131
132 // Add options for shared libraries.
133 if (Args.hasArg(options::OPT_shared)) {
134 CmdArgs.push_back("-bM:SRE");
135 CmdArgs.push_back("-bnoentry");
136 }
137
138 if (Args.hasFlag(options::OPT_mxcoff_roptr, options::OPT_mno_xcoff_roptr,
139 false)) {
140 if (Args.hasArg(options::OPT_shared))
141 D.Diag(diag::err_roptr_cannot_build_shared);
142
143 // The `-mxcoff-roptr` option places constants in RO sections as much as
144 // possible. Then `-bforceimprw` changes such sections to RW if they contain
145 // imported symbols that need to be resolved.
146 CmdArgs.push_back("-bforceimprw");
147 }
148
149 // PGO instrumentation generates symbols belonging to special sections, and
150 // the linker needs to place all symbols in a particular section together in
151 // memory; the AIX linker does that under an option.
152 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
153 false) ||
154 Args.hasFlag(options::OPT_fprofile_generate,
155 options::OPT_fno_profile_generate, false) ||
156 Args.hasFlag(options::OPT_fprofile_generate_EQ,
157 options::OPT_fno_profile_generate, false) ||
158 Args.hasFlag(options::OPT_fprofile_instr_generate,
159 options::OPT_fno_profile_instr_generate, false) ||
160 Args.hasFlag(options::OPT_fprofile_instr_generate_EQ,
161 options::OPT_fno_profile_instr_generate, false) ||
162 Args.hasFlag(options::OPT_fcs_profile_generate,
163 options::OPT_fno_profile_generate, false) ||
164 Args.hasFlag(options::OPT_fcs_profile_generate_EQ,
165 options::OPT_fno_profile_generate, false) ||
166 Args.hasArg(options::OPT_fcreate_profile) ||
167 Args.hasArg(options::OPT_coverage))
168 CmdArgs.push_back("-bdbg:namedsects:ss");
169
170 if (Arg *A =
171 Args.getLastArg(clang::driver::options::OPT_mxcoff_build_id_EQ)) {
172 StringRef BuildId = A->getValue();
173 if (BuildId[0] != '0' || BuildId[1] != 'x' ||
174 BuildId.find_if_not(llvm::isHexDigit, 2) != StringRef::npos)
175 ToolChain.getDriver().Diag(diag::err_drv_unsupported_option_argument)
176 << A->getSpelling() << BuildId;
177 else {
178 std::string LinkerFlag = "-bdbg:ldrinfo:xcoff_binary_id:0x";
179 if (BuildId.size() % 2) // Prepend a 0 if odd number of digits.
180 LinkerFlag += "0";
181 LinkerFlag += BuildId.drop_front(2).lower();
182 CmdArgs.push_back(Args.MakeArgString(LinkerFlag));
183 }
184 }
185
186 // Specify linker output file.
187 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
188 if (Output.isFilename()) {
189 CmdArgs.push_back("-o");
190 CmdArgs.push_back(Output.getFilename());
191 }
192
193 // Set linking mode (i.e., 32/64-bit) and the address of
194 // text and data sections based on arch bit width.
195 if (IsArch32Bit) {
196 CmdArgs.push_back("-b32");
197 CmdArgs.push_back("-bpT:0x10000000");
198 CmdArgs.push_back("-bpD:0x20000000");
199 } else {
200 // Must be 64-bit, otherwise asserted already.
201 CmdArgs.push_back("-b64");
202 CmdArgs.push_back("-bpT:0x100000000");
203 CmdArgs.push_back("-bpD:0x110000000");
204 }
205
206 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
207 options::OPT_shared, options::OPT_r)) {
208 auto getCrt0Basename = [&Args, IsArch32Bit] {
209 if (Arg *A = Args.getLastArgNoClaim(options::OPT_p, options::OPT_pg)) {
210 // Enable gprofiling when "-pg" is specified.
211 if (A->getOption().matches(options::OPT_pg))
212 return IsArch32Bit ? "gcrt0.o" : "gcrt0_64.o";
213 // Enable profiling when "-p" is specified.
214 return IsArch32Bit ? "mcrt0.o" : "mcrt0_64.o";
215 }
216 return IsArch32Bit ? "crt0.o" : "crt0_64.o";
217 };
218
219 CmdArgs.push_back(
220 Args.MakeArgString(ToolChain.GetFilePath(getCrt0Basename())));
221
222 CmdArgs.push_back(Args.MakeArgString(
223 ToolChain.GetFilePath(IsArch32Bit ? "crti.o" : "crti_64.o")));
224 }
225
226 // Collect all static constructor and destructor functions in both C and CXX
227 // language link invocations. This has to come before AddLinkerInputs as the
228 // implied option needs to precede any other '-bcdtors' settings or
229 // '-bnocdtors' that '-Wl' might forward.
230 CmdArgs.push_back("-bcdtors:all:0:s");
231
232 if (Args.hasArg(options::OPT_rpath)) {
233 for (const auto &bopt : Args.getAllArgValues(options::OPT_b))
234 // Check -b opts prefix for "libpath:" or exact match for "nolibpath"
235 if (!bopt.rfind("libpath:", 0) || bopt == "nolibpath")
236 D.Diag(diag::err_drv_cannot_mix_options) << "-rpath" << "-b" + bopt;
237
238 for (const auto &wlopt : Args.getAllArgValues(options::OPT_Wl_COMMA))
239 // Check -Wl, opts prefix for "-blibpath:" or exact match for
240 // "-bnolibpath"
241 if (!wlopt.rfind("-blibpath:", 0) || wlopt == "-bnolibpath")
242 D.Diag(diag::err_drv_cannot_mix_options) << "-rpath" << "-Wl," + wlopt;
243
244 for (const auto &xopt : Args.getAllArgValues(options::OPT_Xlinker))
245 // Check -Xlinker opts prefix for "-blibpath:" or exact match for
246 // "-bnolibpath"
247 if (!xopt.rfind("-blibpath:", 0) || xopt == "-bnolibpath")
248 D.Diag(diag::err_drv_cannot_mix_options)
249 << "-rpath" << "-Xlinker " + xopt;
250
251 std::string BlibPathStr = "";
252 for (const auto &dir : Args.getAllArgValues(options::OPT_rpath))
253 BlibPathStr += dir + ":";
254 BlibPathStr += "/usr/lib:/lib";
255 CmdArgs.push_back(Args.MakeArgString(Twine("-blibpath:") + BlibPathStr));
256 }
257
258 // Specify linker input file(s).
259 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
260
261 if (D.isUsingLTO())
262 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs,
263 D.getLTOMode() == LTOK_Thin);
264
265 if (Args.hasArg(options::OPT_shared) && !hasExportListLinkerOpts(CmdArgs)) {
266
267 const char *CreateExportListExec = Args.MakeArgString(
268 path::parent_path(ToolChain.getDriver().ClangExecutable) +
269 "/llvm-nm");
270 ArgStringList CreateExportCmdArgs;
271
272 std::string CreateExportListPath =
273 C.getDriver().GetTemporaryPath("CreateExportList", "exp");
274 const char *ExportList =
275 C.addTempFile(C.getArgs().MakeArgString(CreateExportListPath));
276
277 for (const auto &II : Inputs)
278 if (II.isFilename())
279 CreateExportCmdArgs.push_back(II.getFilename());
280
281 CreateExportCmdArgs.push_back("--export-symbols");
282 CreateExportCmdArgs.push_back("-X");
283 if (IsArch32Bit) {
284 CreateExportCmdArgs.push_back("32");
285 } else {
286 // Must be 64-bit, otherwise asserted already.
287 CreateExportCmdArgs.push_back("64");
288 }
289
290 auto ExpCommand = std::make_unique<Command>(
291 JA, *this, ResponseFileSupport::None(), CreateExportListExec,
292 CreateExportCmdArgs, Inputs, Output);
293 ExpCommand->setRedirectFiles(
294 {std::nullopt, std::string(ExportList), std::nullopt});
295 C.addCommand(std::move(ExpCommand));
296 CmdArgs.push_back(Args.MakeArgString(llvm::Twine("-bE:") + ExportList));
297 }
298
299 // Add directory to library search path.
300 Args.AddAllArgs(CmdArgs, options::OPT_L);
301 if (!Args.hasArg(options::OPT_r)) {
302 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
303 ToolChain.addProfileRTLibs(Args, CmdArgs);
304
305 if (getToolChain().ShouldLinkCXXStdlib(Args))
306 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
307
308 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
309 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
310
311 // Add OpenMP runtime if -fopenmp is specified.
312 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
313 options::OPT_fno_openmp, false)) {
314 switch (ToolChain.getDriver().getOpenMPRuntime(Args)) {
315 case Driver::OMPRT_OMP:
316 CmdArgs.push_back("-lomp");
317 break;
318 case Driver::OMPRT_IOMP5:
319 CmdArgs.push_back("-liomp5");
320 break;
321 case Driver::OMPRT_GOMP:
322 CmdArgs.push_back("-lgomp");
323 break;
324 case Driver::OMPRT_Unknown:
325 // Already diagnosed.
326 break;
327 }
328 }
329
330 // Support POSIX threads if "-pthreads" or "-pthread" is present.
331 if (Args.hasArg(options::OPT_pthreads, options::OPT_pthread))
332 CmdArgs.push_back("-lpthreads");
333
334 if (D.CCCIsCXX())
335 CmdArgs.push_back("-lm");
336
337 CmdArgs.push_back("-lc");
338
339 if (Args.hasArgNoClaim(options::OPT_p, options::OPT_pg)) {
340 CmdArgs.push_back(Args.MakeArgString((llvm::Twine("-L") + D.SysRoot) +
341 "/lib/profiled"));
342 CmdArgs.push_back(Args.MakeArgString((llvm::Twine("-L") + D.SysRoot) +
343 "/usr/lib/profiled"));
344 }
345 }
346 }
347
348 if (D.IsFlangMode() &&
349 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
350 ToolChain.addFortranRuntimeLibraryPath(Args, CmdArgs);
351 ToolChain.addFortranRuntimeLibs(Args, CmdArgs);
352 CmdArgs.push_back("-lm");
353 CmdArgs.push_back("-lpthread");
354 }
355 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
356 C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
357 Exec, CmdArgs, Inputs, Output));
358 }
359
360 /// AIX - AIX tool chain which can call as(1) and ld(1) directly.
AIX(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)361 AIX::AIX(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
362 : ToolChain(D, Triple, Args) {
363 getProgramPaths().push_back(getDriver().Dir);
364
365 ParseInlineAsmUsingAsmParser = Args.hasFlag(
366 options::OPT_fintegrated_as, options::OPT_fno_integrated_as, true);
367 getLibraryPaths().push_back(getDriver().SysRoot + "/usr/lib");
368 }
369
370 // Returns the effective header sysroot path to use.
371 // This comes from either -isysroot or --sysroot.
372 llvm::StringRef
GetHeaderSysroot(const llvm::opt::ArgList & DriverArgs) const373 AIX::GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const {
374 if (DriverArgs.hasArg(options::OPT_isysroot))
375 return DriverArgs.getLastArgValue(options::OPT_isysroot);
376 if (!getDriver().SysRoot.empty())
377 return getDriver().SysRoot;
378 return "/";
379 }
380
AddOpenMPIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const381 void AIX::AddOpenMPIncludeArgs(const ArgList &DriverArgs,
382 ArgStringList &CC1Args) const {
383 // Add OpenMP include paths if -fopenmp is specified.
384 if (DriverArgs.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
385 options::OPT_fno_openmp, false)) {
386 SmallString<128> PathOpenMP;
387 switch (getDriver().getOpenMPRuntime(DriverArgs)) {
388 case Driver::OMPRT_OMP:
389 PathOpenMP = GetHeaderSysroot(DriverArgs);
390 llvm::sys::path::append(PathOpenMP, "opt/IBM/openxlCSDK", "include",
391 "openmp");
392 addSystemInclude(DriverArgs, CC1Args, PathOpenMP.str());
393 break;
394 case Driver::OMPRT_IOMP5:
395 case Driver::OMPRT_GOMP:
396 case Driver::OMPRT_Unknown:
397 // Unknown / unsupported include paths.
398 break;
399 }
400 }
401 }
402
AddClangSystemIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const403 void AIX::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
404 ArgStringList &CC1Args) const {
405 // Return if -nostdinc is specified as a driver option.
406 if (DriverArgs.hasArg(options::OPT_nostdinc))
407 return;
408
409 llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
410 const Driver &D = getDriver();
411
412 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
413 SmallString<128> P(D.ResourceDir);
414 // Add the PowerPC intrinsic headers (<resource>/include/ppc_wrappers)
415 path::append(P, "include", "ppc_wrappers");
416 addSystemInclude(DriverArgs, CC1Args, P);
417 // Add the Clang builtin headers (<resource>/include)
418 addSystemInclude(DriverArgs, CC1Args, path::parent_path(P.str()));
419 }
420
421 // Add the include directory containing omp.h. This needs to be before
422 // adding the system include directory because other compilers put their
423 // omp.h in /usr/include.
424 AddOpenMPIncludeArgs(DriverArgs, CC1Args);
425
426 // Return if -nostdlibinc is specified as a driver option.
427 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
428 return;
429
430 // Add <sysroot>/usr/include.
431 SmallString<128> UP(Sysroot);
432 path::append(UP, "/usr/include");
433 addSystemInclude(DriverArgs, CC1Args, UP.str());
434 }
435
AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const436 void AIX::AddClangCXXStdlibIncludeArgs(
437 const llvm::opt::ArgList &DriverArgs,
438 llvm::opt::ArgStringList &CC1Args) const {
439
440 if (DriverArgs.hasArg(options::OPT_nostdinc) ||
441 DriverArgs.hasArg(options::OPT_nostdincxx) ||
442 DriverArgs.hasArg(options::OPT_nostdlibinc))
443 return;
444
445 switch (GetCXXStdlibType(DriverArgs)) {
446 case ToolChain::CST_Libstdcxx:
447 llvm::report_fatal_error(
448 "picking up libstdc++ headers is unimplemented on AIX");
449 case ToolChain::CST_Libcxx: {
450 llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
451 SmallString<128> PathCPP(Sysroot);
452 llvm::sys::path::append(PathCPP, "opt/IBM/openxlCSDK", "include", "c++",
453 "v1");
454 addSystemInclude(DriverArgs, CC1Args, PathCPP.str());
455 // Required in order to suppress conflicting C++ overloads in the system
456 // libc headers that were used by XL C++.
457 CC1Args.push_back("-D__LIBC_NO_CPP_MATH_OVERLOADS__");
458 return;
459 }
460 }
461
462 llvm_unreachable("Unexpected C++ library type; only libc++ is supported.");
463 }
464
AddCXXStdlibLibArgs(const llvm::opt::ArgList & Args,llvm::opt::ArgStringList & CmdArgs) const465 void AIX::AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
466 llvm::opt::ArgStringList &CmdArgs) const {
467 switch (GetCXXStdlibType(Args)) {
468 case ToolChain::CST_Libstdcxx:
469 llvm::report_fatal_error("linking libstdc++ unimplemented on AIX");
470 case ToolChain::CST_Libcxx:
471 CmdArgs.push_back("-lc++");
472 if (Args.hasArg(options::OPT_fexperimental_library))
473 CmdArgs.push_back("-lc++experimental");
474 CmdArgs.push_back("-lc++abi");
475 return;
476 }
477
478 llvm_unreachable("Unexpected C++ library type; only libc++ is supported.");
479 }
480
481 // This function processes all the mtocdata options to build the final
482 // simplified toc data options to pass to CC1.
addTocDataOptions(const llvm::opt::ArgList & Args,llvm::opt::ArgStringList & CC1Args,const Driver & D)483 static void addTocDataOptions(const llvm::opt::ArgList &Args,
484 llvm::opt::ArgStringList &CC1Args,
485 const Driver &D) {
486
487 // Check the global toc-data setting. The default is -mno-tocdata.
488 // To enable toc-data globally, -mtocdata must be specified.
489 // Additionally, it must be last to take effect.
490 const bool TOCDataGloballyinEffect = [&Args]() {
491 if (const Arg *LastArg =
492 Args.getLastArg(options::OPT_mtocdata, options::OPT_mno_tocdata))
493 return LastArg->getOption().matches(options::OPT_mtocdata);
494 else
495 return false;
496 }();
497
498 enum TOCDataSetting {
499 AddressInTOC = 0, // Address of the symbol stored in the TOC.
500 DataInTOC = 1 // Symbol defined in the TOC.
501 };
502
503 const TOCDataSetting DefaultTocDataSetting =
504 TOCDataGloballyinEffect ? DataInTOC : AddressInTOC;
505
506 // Process the list of variables in the explicitly specified options
507 // -mtocdata= and -mno-tocdata= to see which variables are opposite to
508 // the global setting of tocdata in TOCDataGloballyinEffect.
509 // Those that have the opposite setting to TOCDataGloballyinEffect, are added
510 // to ExplicitlySpecifiedGlobals.
511 std::set<llvm::StringRef> ExplicitlySpecifiedGlobals;
512 for (const auto Arg :
513 Args.filtered(options::OPT_mtocdata_EQ, options::OPT_mno_tocdata_EQ)) {
514 TOCDataSetting ArgTocDataSetting =
515 Arg->getOption().matches(options::OPT_mtocdata_EQ) ? DataInTOC
516 : AddressInTOC;
517
518 if (ArgTocDataSetting != DefaultTocDataSetting)
519 for (const char *Val : Arg->getValues())
520 ExplicitlySpecifiedGlobals.insert(Val);
521 else
522 for (const char *Val : Arg->getValues())
523 ExplicitlySpecifiedGlobals.erase(Val);
524 }
525
526 auto buildExceptionList = [](const std::set<llvm::StringRef> &ExplicitValues,
527 const char *OptionSpelling) {
528 std::string Option(OptionSpelling);
529 bool IsFirst = true;
530 for (const auto &E : ExplicitValues) {
531 if (!IsFirst)
532 Option += ",";
533
534 IsFirst = false;
535 Option += E.str();
536 }
537 return Option;
538 };
539
540 // Pass the final tocdata options to CC1 consisting of the default
541 // tocdata option (-mtocdata/-mno-tocdata) along with the list
542 // option (-mno-tocdata=/-mtocdata=) if there are any explicitly specified
543 // variables which would be exceptions to the default setting.
544 const char *TocDataGlobalOption =
545 TOCDataGloballyinEffect ? "-mtocdata" : "-mno-tocdata";
546 CC1Args.push_back(TocDataGlobalOption);
547
548 const char *TocDataListOption =
549 TOCDataGloballyinEffect ? "-mno-tocdata=" : "-mtocdata=";
550 if (!ExplicitlySpecifiedGlobals.empty())
551 CC1Args.push_back(Args.MakeArgString(llvm::Twine(
552 buildExceptionList(ExplicitlySpecifiedGlobals, TocDataListOption))));
553 }
554
addClangTargetOptions(const llvm::opt::ArgList & Args,llvm::opt::ArgStringList & CC1Args,Action::OffloadKind DeviceOffloadingKind) const555 void AIX::addClangTargetOptions(
556 const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CC1Args,
557 Action::OffloadKind DeviceOffloadingKind) const {
558 Args.AddLastArg(CC1Args, options::OPT_mignore_xcoff_visibility);
559 Args.AddLastArg(CC1Args, options::OPT_mdefault_visibility_export_mapping_EQ);
560 Args.addOptInFlag(CC1Args, options::OPT_mxcoff_roptr, options::OPT_mno_xcoff_roptr);
561
562 // Forward last mtocdata/mno_tocdata options to -cc1.
563 if (Args.hasArg(options::OPT_mtocdata_EQ, options::OPT_mno_tocdata_EQ,
564 options::OPT_mtocdata))
565 addTocDataOptions(Args, CC1Args, getDriver());
566
567 if (Args.hasArg(options::OPT_msave_reg_params))
568 CC1Args.push_back("-msave-reg-params");
569
570 if (Args.hasFlag(options::OPT_fxl_pragma_pack,
571 options::OPT_fno_xl_pragma_pack, true))
572 CC1Args.push_back("-fxl-pragma-pack");
573
574 // Pass "-fno-sized-deallocation" only when the user hasn't manually enabled
575 // or disabled sized deallocations.
576 if (!Args.getLastArgNoClaim(options::OPT_fsized_deallocation,
577 options::OPT_fno_sized_deallocation))
578 CC1Args.push_back("-fno-sized-deallocation");
579 }
580
addProfileRTLibs(const llvm::opt::ArgList & Args,llvm::opt::ArgStringList & CmdArgs) const581 void AIX::addProfileRTLibs(const llvm::opt::ArgList &Args,
582 llvm::opt::ArgStringList &CmdArgs) const {
583 if (needsProfileRT(Args)) {
584 // Add linker option -u__llvm_profile_runtime to cause runtime
585 // initialization to occur.
586 CmdArgs.push_back(Args.MakeArgString(
587 Twine("-u", llvm::getInstrProfRuntimeHookVarName())));
588
589 if (const auto *A =
590 Args.getLastArgNoClaim(options::OPT_fprofile_update_EQ)) {
591 StringRef Val = A->getValue();
592 if (Val == "atomic" || Val == "prefer-atomic")
593 CmdArgs.push_back("-latomic");
594 }
595 }
596
597 ToolChain::addProfileRTLibs(Args, CmdArgs);
598 }
599
GetDefaultCXXStdlibType() const600 ToolChain::CXXStdlibType AIX::GetDefaultCXXStdlibType() const {
601 return ToolChain::CST_Libcxx;
602 }
603
GetDefaultRuntimeLibType() const604 ToolChain::RuntimeLibType AIX::GetDefaultRuntimeLibType() const {
605 return ToolChain::RLT_CompilerRT;
606 }
607
buildAssembler() const608 auto AIX::buildAssembler() const -> Tool * { return new aix::Assembler(*this); }
609
buildLinker() const610 auto AIX::buildLinker() const -> Tool * { return new aix::Linker(*this); }
611