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 "Arch/PPC.h"
11#include "CommonArgs.h"
12#include "clang/Driver/Compilation.h"
13#include "clang/Driver/Options.h"
14#include "clang/Driver/SanitizerArgs.h"
15#include "llvm/ADT/StringExtras.h"
16#include "llvm/Option/ArgList.h"
17#include "llvm/ProfileData/InstrProf.h"
18#include "llvm/Support/Path.h"
19
20#include <set>
21
22using AIX = clang::driver::toolchains::AIX;
23using namespace clang::driver;
24using namespace clang::driver::tools;
25using namespace clang::driver::toolchains;
26
27using namespace llvm::opt;
28using namespace llvm::sys;
29
30void aix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
31 const InputInfo &Output,
32 const InputInfoList &Inputs,
33 const ArgList &Args,
34 const char *LinkingOutput) const {
35 const Driver &D = getToolChain().getDriver();
36 ArgStringList CmdArgs;
37
38 const bool IsArch32Bit = getToolChain().getTriple().isArch32Bit();
39 const bool IsArch64Bit = getToolChain().getTriple().isArch64Bit();
40 // Only support 32 and 64 bit.
41 if (!IsArch32Bit && !IsArch64Bit)
42 llvm_unreachable("Unsupported bit width value.");
43
44 if (Arg *A = C.getArgs().getLastArg(Ids: options::OPT_G)) {
45 D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
46 << A->getSpelling() << D.getTargetTriple();
47 }
48
49 // Specify the mode in which the as(1) command operates.
50 if (IsArch32Bit) {
51 CmdArgs.push_back(Elt: "-a32");
52 } else {
53 // Must be 64-bit, otherwise asserted already.
54 CmdArgs.push_back(Elt: "-a64");
55 }
56
57 // Accept any mixture of instructions.
58 // On Power for AIX and Linux, this behaviour matches that of GCC for both the
59 // user-provided assembler source case and the compiler-produced assembler
60 // source case. Yet XL with user-provided assembler source would not add this.
61 CmdArgs.push_back(Elt: "-many");
62
63 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: options::OPT_Xassembler);
64
65 // Specify assembler output file.
66 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
67 if (Output.isFilename()) {
68 CmdArgs.push_back(Elt: "-o");
69 CmdArgs.push_back(Elt: Output.getFilename());
70 }
71
72 // Specify assembler input file.
73 // The system assembler on AIX takes exactly one input file. The driver is
74 // expected to invoke as(1) separately for each assembler source input file.
75 if (Inputs.size() != 1)
76 llvm_unreachable("Invalid number of input files.");
77 const InputInfo &II = Inputs[0];
78 assert((II.isFilename() || II.isNothing()) && "Invalid input.");
79 if (II.isFilename())
80 CmdArgs.push_back(Elt: II.getFilename());
81
82 const char *Exec = Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: "as"));
83 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this, args: ResponseFileSupport::None(),
84 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
85}
86
87// Determine whether there are any linker options that supply an export list
88// (or equivalent information about what to export) being sent to the linker.
89static bool hasExportListLinkerOpts(const ArgStringList &CmdArgs) {
90 for (size_t i = 0, Size = CmdArgs.size(); i < Size; ++i) {
91 llvm::StringRef ArgString(CmdArgs[i]);
92
93 if (ArgString.starts_with(Prefix: "-bE:") || ArgString.starts_with(Prefix: "-bexport:") ||
94 ArgString == "-bexpall" || ArgString == "-bexpfull")
95 return true;
96
97 // If we split -b option, check the next opt.
98 if (ArgString == "-b" && i + 1 < Size) {
99 ++i;
100 llvm::StringRef ArgNextString(CmdArgs[i]);
101 if (ArgNextString.starts_with(Prefix: "E:") ||
102 ArgNextString.starts_with(Prefix: "export:") || ArgNextString == "expall" ||
103 ArgNextString == "expfull")
104 return true;
105 }
106 }
107 return false;
108}
109
110void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
111 const InputInfo &Output,
112 const InputInfoList &Inputs, const ArgList &Args,
113 const char *LinkingOutput) const {
114 const AIX &ToolChain = static_cast<const AIX &>(getToolChain());
115 const Driver &D = ToolChain.getDriver();
116 ArgStringList CmdArgs;
117
118 const bool IsArch32Bit = ToolChain.getTriple().isArch32Bit();
119 const bool IsArch64Bit = ToolChain.getTriple().isArch64Bit();
120 // Only support 32 and 64 bit.
121 if (!(IsArch32Bit || IsArch64Bit))
122 llvm_unreachable("Unsupported bit width value.");
123
124 if (Arg *A = C.getArgs().getLastArg(Ids: options::OPT_G)) {
125 D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
126 << A->getSpelling() << D.getTargetTriple();
127 }
128
129 // Force static linking when "-static" is present.
130 if (Args.hasArg(Ids: options::OPT_static))
131 CmdArgs.push_back(Elt: "-bnso");
132
133 // Add options for shared libraries.
134 if (Args.hasArg(Ids: options::OPT_shared)) {
135 CmdArgs.push_back(Elt: "-bM:SRE");
136 CmdArgs.push_back(Elt: "-bnoentry");
137 }
138
139 if (Args.hasFlag(Pos: options::OPT_mxcoff_roptr, Neg: options::OPT_mno_xcoff_roptr,
140 Default: false)) {
141 if (Args.hasArg(Ids: options::OPT_shared))
142 D.Diag(DiagID: diag::err_roptr_cannot_build_shared);
143
144 // The `-mxcoff-roptr` option places constants in RO sections as much as
145 // possible. Then `-bforceimprw` changes such sections to RW if they contain
146 // imported symbols that need to be resolved.
147 CmdArgs.push_back(Elt: "-bforceimprw");
148 }
149
150 // PGO instrumentation generates symbols belonging to special sections, and
151 // the linker needs to place all symbols in a particular section together in
152 // memory; the AIX linker does that under an option.
153 if (Args.hasFlag(Pos: options::OPT_fprofile_arcs, Neg: options::OPT_fno_profile_arcs,
154 Default: false) ||
155 Args.hasFlag(Pos: options::OPT_fprofile_generate,
156 Neg: options::OPT_fno_profile_generate, Default: false) ||
157 Args.hasFlag(Pos: options::OPT_fprofile_generate_EQ,
158 Neg: options::OPT_fno_profile_generate, Default: false) ||
159 Args.hasFlag(Pos: options::OPT_fprofile_instr_generate,
160 Neg: options::OPT_fno_profile_instr_generate, Default: false) ||
161 Args.hasFlag(Pos: options::OPT_fprofile_instr_generate_EQ,
162 Neg: options::OPT_fno_profile_instr_generate, Default: false) ||
163 Args.hasFlag(Pos: options::OPT_fcs_profile_generate,
164 Neg: options::OPT_fno_profile_generate, Default: false) ||
165 Args.hasFlag(Pos: options::OPT_fcs_profile_generate_EQ,
166 Neg: options::OPT_fno_profile_generate, Default: false) ||
167 Args.hasArg(Ids: options::OPT_fcreate_profile) ||
168 Args.hasArg(Ids: options::OPT_coverage))
169 CmdArgs.push_back(Elt: "-bdbg:namedsects:ss");
170
171 if (Arg *A =
172 Args.getLastArg(Ids: clang::driver::options::OPT_mxcoff_build_id_EQ)) {
173 StringRef BuildId = A->getValue();
174 if (BuildId[0] != '0' || BuildId[1] != 'x' ||
175 BuildId.find_if_not(F: llvm::isHexDigit, From: 2) != StringRef::npos)
176 ToolChain.getDriver().Diag(DiagID: diag::err_drv_unsupported_option_argument)
177 << A->getSpelling() << BuildId;
178 else {
179 std::string LinkerFlag = "-bdbg:ldrinfo:xcoff_binary_id:0x";
180 if (BuildId.size() % 2) // Prepend a 0 if odd number of digits.
181 LinkerFlag += "0";
182 LinkerFlag += BuildId.drop_front(N: 2).lower();
183 CmdArgs.push_back(Elt: Args.MakeArgString(Str: LinkerFlag));
184 }
185 }
186
187 // Specify linker output file.
188 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
189 if (Output.isFilename()) {
190 CmdArgs.push_back(Elt: "-o");
191 CmdArgs.push_back(Elt: Output.getFilename());
192 }
193
194 // Set linking mode (i.e., 32/64-bit) and the address of
195 // text and data sections based on arch bit width.
196 if (IsArch32Bit) {
197 CmdArgs.push_back(Elt: "-b32");
198 CmdArgs.push_back(Elt: "-bpT:0x10000000");
199 CmdArgs.push_back(Elt: "-bpD:0x20000000");
200 } else {
201 // Must be 64-bit, otherwise asserted already.
202 CmdArgs.push_back(Elt: "-b64");
203 CmdArgs.push_back(Elt: "-bpT:0x100000000");
204 CmdArgs.push_back(Elt: "-bpD:0x110000000");
205 }
206
207 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nostartfiles,
208 Ids: options::OPT_shared, Ids: options::OPT_r)) {
209 auto getCrt0Basename = [&Args, IsArch32Bit] {
210 if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_p, Ids: options::OPT_pg)) {
211 // Enable gprofiling when "-pg" is specified.
212 if (A->getOption().matches(ID: options::OPT_pg))
213 return IsArch32Bit ? "gcrt0.o" : "gcrt0_64.o";
214 // Enable profiling when "-p" is specified.
215 return IsArch32Bit ? "mcrt0.o" : "mcrt0_64.o";
216 }
217 return IsArch32Bit ? "crt0.o" : "crt0_64.o";
218 };
219
220 CmdArgs.push_back(
221 Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: getCrt0Basename())));
222
223 CmdArgs.push_back(Elt: Args.MakeArgString(
224 Str: ToolChain.GetFilePath(Name: IsArch32Bit ? "crti.o" : "crti_64.o")));
225 }
226
227 // Collect all static constructor and destructor functions in both C and CXX
228 // language link invocations. This has to come before AddLinkerInputs as the
229 // implied option needs to precede any other '-bcdtors' settings or
230 // '-bnocdtors' that '-Wl' might forward.
231 CmdArgs.push_back(Elt: "-bcdtors:all:0:s");
232
233 // Specify linker input file(s).
234 AddLinkerInputs(TC: ToolChain, Inputs, Args, CmdArgs, JA);
235
236 if (D.isUsingLTO()) {
237 assert(!Inputs.empty() && "Must have at least one input.");
238 // Find the first filename InputInfo object.
239 auto Input = llvm::find_if(
240 Range: Inputs, P: [](const InputInfo &II) -> bool { return II.isFilename(); });
241 if (Input == Inputs.end())
242 // For a very rare case, all of the inputs to the linker are
243 // InputArg. If that happens, just use the first InputInfo.
244 Input = Inputs.begin();
245
246 addLTOOptions(ToolChain, Args, CmdArgs, Output, Input: *Input,
247 IsThinLTO: D.getLTOMode() == LTOK_Thin);
248 }
249
250 if (Args.hasArg(Ids: options::OPT_shared) && !hasExportListLinkerOpts(CmdArgs)) {
251
252 const char *CreateExportListExec = Args.MakeArgString(
253 Str: path::parent_path(path: ToolChain.getDriver().ClangExecutable) +
254 "/llvm-nm");
255 ArgStringList CreateExportCmdArgs;
256
257 std::string CreateExportListPath =
258 C.getDriver().GetTemporaryPath(Prefix: "CreateExportList", Suffix: "exp");
259 const char *ExportList =
260 C.addTempFile(Name: C.getArgs().MakeArgString(Str: CreateExportListPath));
261
262 for (const auto &II : Inputs)
263 if (II.isFilename())
264 CreateExportCmdArgs.push_back(Elt: II.getFilename());
265
266 CreateExportCmdArgs.push_back(Elt: "--export-symbols");
267 CreateExportCmdArgs.push_back(Elt: "-X");
268 if (IsArch32Bit) {
269 CreateExportCmdArgs.push_back(Elt: "32");
270 } else {
271 // Must be 64-bit, otherwise asserted already.
272 CreateExportCmdArgs.push_back(Elt: "64");
273 }
274
275 auto ExpCommand = std::make_unique<Command>(
276 args: JA, args: *this, args: ResponseFileSupport::None(), args&: CreateExportListExec,
277 args&: CreateExportCmdArgs, args: Inputs, args: Output);
278 ExpCommand->setRedirectFiles(
279 {std::nullopt, std::string(ExportList), std::nullopt});
280 C.addCommand(C: std::move(ExpCommand));
281 CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::Twine("-bE:") + ExportList));
282 }
283
284 // Add directory to library search path.
285 Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_L);
286 if (!Args.hasArg(Ids: options::OPT_r)) {
287 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
288 ToolChain.addProfileRTLibs(Args, CmdArgs);
289
290 if (getToolChain().ShouldLinkCXXStdlib(Args))
291 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
292
293 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs)) {
294 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
295
296 // Add OpenMP runtime if -fopenmp is specified.
297 if (Args.hasFlag(Pos: options::OPT_fopenmp, PosAlias: options::OPT_fopenmp_EQ,
298 Neg: options::OPT_fno_openmp, Default: false)) {
299 switch (ToolChain.getDriver().getOpenMPRuntime(Args)) {
300 case Driver::OMPRT_OMP:
301 CmdArgs.push_back(Elt: "-lomp");
302 break;
303 case Driver::OMPRT_IOMP5:
304 CmdArgs.push_back(Elt: "-liomp5");
305 break;
306 case Driver::OMPRT_GOMP:
307 CmdArgs.push_back(Elt: "-lgomp");
308 break;
309 case Driver::OMPRT_Unknown:
310 // Already diagnosed.
311 break;
312 }
313 }
314
315 // Support POSIX threads if "-pthreads" or "-pthread" is present.
316 if (Args.hasArg(Ids: options::OPT_pthreads, Ids: options::OPT_pthread))
317 CmdArgs.push_back(Elt: "-lpthreads");
318
319 if (D.CCCIsCXX())
320 CmdArgs.push_back(Elt: "-lm");
321
322 CmdArgs.push_back(Elt: "-lc");
323
324 if (Args.hasArgNoClaim(Ids: options::OPT_p, Ids: options::OPT_pg)) {
325 CmdArgs.push_back(Elt: Args.MakeArgString(Str: (llvm::Twine("-L") + D.SysRoot) +
326 "/lib/profiled"));
327 CmdArgs.push_back(Elt: Args.MakeArgString(Str: (llvm::Twine("-L") + D.SysRoot) +
328 "/usr/lib/profiled"));
329 }
330 }
331 }
332
333 if (D.IsFlangMode()) {
334 addFortranRuntimeLibraryPath(TC: ToolChain, Args, CmdArgs);
335 addFortranRuntimeLibs(TC: ToolChain, Args, CmdArgs);
336 CmdArgs.push_back(Elt: "-lm");
337 CmdArgs.push_back(Elt: "-lpthread");
338 }
339 const char *Exec = Args.MakeArgString(Str: ToolChain.GetLinkerPath());
340 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this, args: ResponseFileSupport::None(),
341 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
342}
343
344/// AIX - AIX tool chain which can call as(1) and ld(1) directly.
345AIX::AIX(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
346 : ToolChain(D, Triple, Args) {
347 getProgramPaths().push_back(Elt: getDriver().Dir);
348
349 ParseInlineAsmUsingAsmParser = Args.hasFlag(
350 Pos: options::OPT_fintegrated_as, Neg: options::OPT_fno_integrated_as, Default: true);
351 getLibraryPaths().push_back(Elt: getDriver().SysRoot + "/usr/lib");
352}
353
354// Returns the effective header sysroot path to use.
355// This comes from either -isysroot or --sysroot.
356llvm::StringRef
357AIX::GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const {
358 if (DriverArgs.hasArg(Ids: options::OPT_isysroot))
359 return DriverArgs.getLastArgValue(Id: options::OPT_isysroot);
360 if (!getDriver().SysRoot.empty())
361 return getDriver().SysRoot;
362 return "/";
363}
364
365void AIX::AddOpenMPIncludeArgs(const ArgList &DriverArgs,
366 ArgStringList &CC1Args) const {
367 // Add OpenMP include paths if -fopenmp is specified.
368 if (DriverArgs.hasFlag(Pos: options::OPT_fopenmp, PosAlias: options::OPT_fopenmp_EQ,
369 Neg: options::OPT_fno_openmp, Default: false)) {
370 SmallString<128> PathOpenMP;
371 switch (getDriver().getOpenMPRuntime(Args: DriverArgs)) {
372 case Driver::OMPRT_OMP:
373 PathOpenMP = GetHeaderSysroot(DriverArgs);
374 llvm::sys::path::append(path&: PathOpenMP, a: "opt/IBM/openxlCSDK", b: "include",
375 c: "openmp");
376 addSystemInclude(DriverArgs, CC1Args, Path: PathOpenMP.str());
377 break;
378 case Driver::OMPRT_IOMP5:
379 case Driver::OMPRT_GOMP:
380 case Driver::OMPRT_Unknown:
381 // Unknown / unsupported include paths.
382 break;
383 }
384 }
385}
386
387void AIX::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
388 ArgStringList &CC1Args) const {
389 // Return if -nostdinc is specified as a driver option.
390 if (DriverArgs.hasArg(Ids: options::OPT_nostdinc))
391 return;
392
393 llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
394 const Driver &D = getDriver();
395
396 if (!DriverArgs.hasArg(Ids: options::OPT_nobuiltininc)) {
397 SmallString<128> P(D.ResourceDir);
398 // Add the PowerPC intrinsic headers (<resource>/include/ppc_wrappers)
399 path::append(path&: P, a: "include", b: "ppc_wrappers");
400 addSystemInclude(DriverArgs, CC1Args, Path: P);
401 // Add the Clang builtin headers (<resource>/include)
402 addSystemInclude(DriverArgs, CC1Args, Path: path::parent_path(path: P.str()));
403 }
404
405 // Add the include directory containing omp.h. This needs to be before
406 // adding the system include directory because other compilers put their
407 // omp.h in /usr/include.
408 AddOpenMPIncludeArgs(DriverArgs, CC1Args);
409
410 // Return if -nostdlibinc is specified as a driver option.
411 if (DriverArgs.hasArg(Ids: options::OPT_nostdlibinc))
412 return;
413
414 // Add <sysroot>/usr/include.
415 SmallString<128> UP(Sysroot);
416 path::append(path&: UP, a: "/usr/include");
417 addSystemInclude(DriverArgs, CC1Args, Path: UP.str());
418}
419
420void AIX::AddClangCXXStdlibIncludeArgs(
421 const llvm::opt::ArgList &DriverArgs,
422 llvm::opt::ArgStringList &CC1Args) const {
423
424 if (DriverArgs.hasArg(Ids: options::OPT_nostdinc) ||
425 DriverArgs.hasArg(Ids: options::OPT_nostdincxx) ||
426 DriverArgs.hasArg(Ids: options::OPT_nostdlibinc))
427 return;
428
429 switch (GetCXXStdlibType(Args: DriverArgs)) {
430 case ToolChain::CST_Libstdcxx:
431 llvm::report_fatal_error(
432 reason: "picking up libstdc++ headers is unimplemented on AIX");
433 case ToolChain::CST_Libcxx: {
434 llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
435 SmallString<128> PathCPP(Sysroot);
436 llvm::sys::path::append(path&: PathCPP, a: "opt/IBM/openxlCSDK", b: "include", c: "c++",
437 d: "v1");
438 addSystemInclude(DriverArgs, CC1Args, Path: PathCPP.str());
439 // Required in order to suppress conflicting C++ overloads in the system
440 // libc headers that were used by XL C++.
441 CC1Args.push_back(Elt: "-D__LIBC_NO_CPP_MATH_OVERLOADS__");
442 return;
443 }
444 }
445
446 llvm_unreachable("Unexpected C++ library type; only libc++ is supported.");
447}
448
449void AIX::AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
450 llvm::opt::ArgStringList &CmdArgs) const {
451 switch (GetCXXStdlibType(Args)) {
452 case ToolChain::CST_Libstdcxx:
453 llvm::report_fatal_error(reason: "linking libstdc++ unimplemented on AIX");
454 case ToolChain::CST_Libcxx:
455 CmdArgs.push_back(Elt: "-lc++");
456 if (Args.hasArg(Ids: options::OPT_fexperimental_library))
457 CmdArgs.push_back(Elt: "-lc++experimental");
458 CmdArgs.push_back(Elt: "-lc++abi");
459 return;
460 }
461
462 llvm_unreachable("Unexpected C++ library type; only libc++ is supported.");
463}
464
465// This function processes all the mtocdata options to build the final
466// simplified toc data options to pass to CC1.
467static void addTocDataOptions(const llvm::opt::ArgList &Args,
468 llvm::opt::ArgStringList &CC1Args,
469 const Driver &D) {
470
471 // Check the global toc-data setting. The default is -mno-tocdata.
472 // To enable toc-data globally, -mtocdata must be specified.
473 // Additionally, it must be last to take effect.
474 const bool TOCDataGloballyinEffect = [&Args]() {
475 if (const Arg *LastArg =
476 Args.getLastArg(Ids: options::OPT_mtocdata, Ids: options::OPT_mno_tocdata))
477 return LastArg->getOption().matches(ID: options::OPT_mtocdata);
478 else
479 return false;
480 }();
481
482 enum TOCDataSetting {
483 AddressInTOC = 0, // Address of the symbol stored in the TOC.
484 DataInTOC = 1 // Symbol defined in the TOC.
485 };
486
487 const TOCDataSetting DefaultTocDataSetting =
488 TOCDataGloballyinEffect ? DataInTOC : AddressInTOC;
489
490 // Process the list of variables in the explicitly specified options
491 // -mtocdata= and -mno-tocdata= to see which variables are opposite to
492 // the global setting of tocdata in TOCDataGloballyinEffect.
493 // Those that have the opposite setting to TOCDataGloballyinEffect, are added
494 // to ExplicitlySpecifiedGlobals.
495 std::set<llvm::StringRef> ExplicitlySpecifiedGlobals;
496 for (const auto Arg :
497 Args.filtered(Ids: options::OPT_mtocdata_EQ, Ids: options::OPT_mno_tocdata_EQ)) {
498 TOCDataSetting ArgTocDataSetting =
499 Arg->getOption().matches(ID: options::OPT_mtocdata_EQ) ? DataInTOC
500 : AddressInTOC;
501
502 if (ArgTocDataSetting != DefaultTocDataSetting)
503 for (const char *Val : Arg->getValues())
504 ExplicitlySpecifiedGlobals.insert(x: Val);
505 else
506 for (const char *Val : Arg->getValues())
507 ExplicitlySpecifiedGlobals.erase(x: Val);
508 }
509
510 auto buildExceptionList = [](const std::set<llvm::StringRef> &ExplicitValues,
511 const char *OptionSpelling) {
512 std::string Option(OptionSpelling);
513 bool IsFirst = true;
514 for (const auto &E : ExplicitValues) {
515 if (!IsFirst)
516 Option += ",";
517
518 IsFirst = false;
519 Option += E.str();
520 }
521 return Option;
522 };
523
524 // Pass the final tocdata options to CC1 consisting of the default
525 // tocdata option (-mtocdata/-mno-tocdata) along with the list
526 // option (-mno-tocdata=/-mtocdata=) if there are any explicitly specified
527 // variables which would be exceptions to the default setting.
528 const char *TocDataGlobalOption =
529 TOCDataGloballyinEffect ? "-mtocdata" : "-mno-tocdata";
530 CC1Args.push_back(Elt: TocDataGlobalOption);
531
532 const char *TocDataListOption =
533 TOCDataGloballyinEffect ? "-mno-tocdata=" : "-mtocdata=";
534 if (!ExplicitlySpecifiedGlobals.empty())
535 CC1Args.push_back(Elt: Args.MakeArgString(Str: llvm::Twine(
536 buildExceptionList(ExplicitlySpecifiedGlobals, TocDataListOption))));
537}
538
539void AIX::addClangTargetOptions(
540 const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CC1Args,
541 Action::OffloadKind DeviceOffloadingKind) const {
542 Args.AddLastArg(Output&: CC1Args, Ids: options::OPT_mignore_xcoff_visibility);
543 Args.AddLastArg(Output&: CC1Args, Ids: options::OPT_mdefault_visibility_export_mapping_EQ);
544 Args.addOptInFlag(Output&: CC1Args, Pos: options::OPT_mxcoff_roptr, Neg: options::OPT_mno_xcoff_roptr);
545
546 // Forward last mtocdata/mno_tocdata options to -cc1.
547 if (Args.hasArg(Ids: options::OPT_mtocdata_EQ, Ids: options::OPT_mno_tocdata_EQ,
548 Ids: options::OPT_mtocdata))
549 addTocDataOptions(Args, CC1Args, D: getDriver());
550
551 if (Args.hasFlag(Pos: options::OPT_fxl_pragma_pack,
552 Neg: options::OPT_fno_xl_pragma_pack, Default: true))
553 CC1Args.push_back(Elt: "-fxl-pragma-pack");
554
555 // Pass "-fno-sized-deallocation" only when the user hasn't manually enabled
556 // or disabled sized deallocations.
557 if (!Args.getLastArgNoClaim(Ids: options::OPT_fsized_deallocation,
558 Ids: options::OPT_fno_sized_deallocation))
559 CC1Args.push_back(Elt: "-fno-sized-deallocation");
560}
561
562void AIX::addProfileRTLibs(const llvm::opt::ArgList &Args,
563 llvm::opt::ArgStringList &CmdArgs) const {
564 if (needsProfileRT(Args)) {
565 // Add linker option -u__llvm_profile_runtime to cause runtime
566 // initialization to occur.
567 CmdArgs.push_back(Elt: Args.MakeArgString(
568 Str: Twine("-u", llvm::getInstrProfRuntimeHookVarName())));
569
570 if (const auto *A =
571 Args.getLastArgNoClaim(Ids: options::OPT_fprofile_update_EQ)) {
572 StringRef Val = A->getValue();
573 if (Val == "atomic" || Val == "prefer-atomic")
574 CmdArgs.push_back(Elt: "-latomic");
575 }
576 }
577
578 ToolChain::addProfileRTLibs(Args, CmdArgs);
579}
580
581ToolChain::CXXStdlibType AIX::GetDefaultCXXStdlibType() const {
582 return ToolChain::CST_Libcxx;
583}
584
585ToolChain::RuntimeLibType AIX::GetDefaultRuntimeLibType() const {
586 return ToolChain::RLT_CompilerRT;
587}
588
589auto AIX::buildAssembler() const -> Tool * { return new aix::Assembler(*this); }
590
591auto AIX::buildLinker() const -> Tool * { return new aix::Linker(*this); }
592