1 //===--- Hexagon.cpp - Hexagon ToolChain Implementations --------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
10 #include "CommonArgs.h"
11 #include "clang/Driver/Compilation.h"
12 #include "clang/Driver/Driver.h"
13 #include "clang/Driver/DriverDiagnostic.h"
14 #include "clang/Driver/InputInfo.h"
15 #include "clang/Driver/Options.h"
16 #include "llvm/ADT/StringExtras.h"
17 #include "llvm/Option/ArgList.h"
18 #include "llvm/Support/FileSystem.h"
19 #include "llvm/Support/Path.h"
20 #include "llvm/Support/VirtualFileSystem.h"
22 using namespace clang::driver;
23 using namespace clang::driver::tools;
24 using namespace clang::driver::toolchains;
25 using namespace clang;
26 using namespace llvm::opt;
28 // Default hvx-length for various versions.
29 static StringRef getDefaultHvxLength(StringRef Cpu) {
30 return llvm::StringSwitch<StringRef>(Cpu)
37 static void handleHVXWarnings(const Driver &D, const ArgList &Args) {
38 // Handle the unsupported values passed to mhvx-length.
39 if (Arg *A = Args.getLastArg(options::OPT_mhexagon_hvx_length_EQ)) {
40 StringRef Val = A->getValue();
41 if (!Val.equals_insensitive("64b") && !Val.equals_insensitive("128b"))
42 D.Diag(diag::err_drv_unsupported_option_argument)
43 << A->getOption().getName() << Val;
47 // Handle hvx target features explicitly.
48 static void handleHVXTargetFeatures(const Driver &D, const ArgList &Args,
49 std::vector<StringRef> &Features,
50 StringRef Cpu, bool &HasHVX) {
51 // Handle HVX warnings.
52 handleHVXWarnings(D, Args);
54 // Add the +hvx* features based on commandline flags.
55 StringRef HVXFeature, HVXLength;
57 // Handle -mhvx, -mhvx=, -mno-hvx.
58 if (Arg *A = Args.getLastArg(options::OPT_mno_hexagon_hvx,
59 options::OPT_mhexagon_hvx,
60 options::OPT_mhexagon_hvx_EQ)) {
61 if (A->getOption().matches(options::OPT_mno_hexagon_hvx))
63 if (A->getOption().matches(options::OPT_mhexagon_hvx_EQ)) {
65 HVXFeature = Cpu = A->getValue();
66 HVXFeature = Args.MakeArgString(llvm::Twine("+hvx") + HVXFeature.lower());
67 } else if (A->getOption().matches(options::OPT_mhexagon_hvx)) {
69 HVXFeature = Args.MakeArgString(llvm::Twine("+hvx") + Cpu);
71 Features.push_back(HVXFeature);
74 // Handle -mhvx-length=.
75 if (Arg *A = Args.getLastArg(options::OPT_mhexagon_hvx_length_EQ)) {
76 // These flags are valid only if HVX in enabled.
78 D.Diag(diag::err_drv_invalid_hvx_length);
79 else if (A->getOption().matches(options::OPT_mhexagon_hvx_length_EQ))
80 HVXLength = A->getValue();
82 // Default hvx-length based on Cpu.
84 HVXLength = getDefaultHvxLength(Cpu);
86 if (!HVXLength.empty()) {
88 Args.MakeArgString(llvm::Twine("+hvx-length") + HVXLength.lower());
89 Features.push_back(HVXFeature);
93 // Hexagon target features.
94 void hexagon::getHexagonTargetFeatures(const Driver &D, const ArgList &Args,
95 std::vector<StringRef> &Features) {
96 handleTargetFeaturesGroup(Args, Features,
97 options::OPT_m_hexagon_Features_Group);
99 bool UseLongCalls = false;
100 if (Arg *A = Args.getLastArg(options::OPT_mlong_calls,
101 options::OPT_mno_long_calls)) {
102 if (A->getOption().matches(options::OPT_mlong_calls))
106 Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls");
109 StringRef Cpu(toolchains::HexagonToolChain::GetTargetCPUVersion(Args));
110 // 't' in Cpu denotes tiny-core micro-architecture. For now, the co-processors
111 // have no dependency on micro-architecture.
112 const bool TinyCore = Cpu.contains('t');
115 Cpu = Cpu.take_front(Cpu.size() - 1);
117 handleHVXTargetFeatures(D, Args, Features, Cpu, HasHVX);
119 if (HexagonToolChain::isAutoHVXEnabled(Args) && !HasHVX)
120 D.Diag(diag::warn_drv_vectorize_needs_hvx);
123 // Hexagon tools start.
124 void hexagon::Assembler::RenderExtraToolArgs(const JobAction &JA,
125 ArgStringList &CmdArgs) const {
128 void hexagon::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
129 const InputInfo &Output,
130 const InputInfoList &Inputs,
132 const char *LinkingOutput) const {
133 claimNoWarnArgs(Args);
135 auto &HTC = static_cast<const toolchains::HexagonToolChain&>(getToolChain());
136 const Driver &D = HTC.getDriver();
137 ArgStringList CmdArgs;
139 CmdArgs.push_back("--arch=hexagon");
141 RenderExtraToolArgs(JA, CmdArgs);
143 const char *AsName = "llvm-mc";
144 CmdArgs.push_back("-filetype=obj");
145 CmdArgs.push_back(Args.MakeArgString(
147 toolchains::HexagonToolChain::GetTargetCPUVersion(Args)));
149 addSanitizerRuntimes(HTC, Args, CmdArgs);
151 if (Output.isFilename()) {
152 CmdArgs.push_back("-o");
153 CmdArgs.push_back(Output.getFilename());
155 assert(Output.isNothing() && "Unexpected output");
156 CmdArgs.push_back("-fsyntax-only");
159 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
160 CmdArgs.push_back(Args.MakeArgString("-gpsize=" + Twine(G.getValue())));
163 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
165 // Only pass -x if gcc will understand it; otherwise hope gcc
166 // understands the suffix correctly. The main use case this would go
167 // wrong in is for linker inputs if they happened to have an odd
168 // suffix; really the only way to get this to happen is a command
169 // like '-x foobar a.c' which will treat a.c like a linker input.
171 // FIXME: For the linker case specifically, can we safely convert
172 // inputs into '-Wl,' options?
173 for (const auto &II : Inputs) {
174 // Don't try to pass LLVM or AST inputs to a generic gcc.
175 if (types::isLLVMIR(II.getType()))
176 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
177 << HTC.getTripleString();
178 else if (II.getType() == types::TY_AST)
179 D.Diag(clang::diag::err_drv_no_ast_support)
180 << HTC.getTripleString();
181 else if (II.getType() == types::TY_ModuleFile)
182 D.Diag(diag::err_drv_no_module_support)
183 << HTC.getTripleString();
186 CmdArgs.push_back(II.getFilename());
188 // Don't render as input, we need gcc to do the translations.
189 // FIXME: What is this?
190 II.getInputArg().render(Args, CmdArgs);
193 auto *Exec = Args.MakeArgString(HTC.GetProgramPath(AsName));
194 C.addCommand(std::make_unique<Command>(JA, *this,
195 ResponseFileSupport::AtFileCurCP(),
196 Exec, CmdArgs, Inputs, Output));
199 void hexagon::Linker::RenderExtraToolArgs(const JobAction &JA,
200 ArgStringList &CmdArgs) const {
204 constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
205 const toolchains::HexagonToolChain &HTC,
206 const InputInfo &Output, const InputInfoList &Inputs,
207 const ArgList &Args, ArgStringList &CmdArgs,
208 const char *LinkingOutput) {
210 const Driver &D = HTC.getDriver();
212 //----------------------------------------------------------------------------
214 //----------------------------------------------------------------------------
215 bool IsStatic = Args.hasArg(options::OPT_static);
216 bool IsShared = Args.hasArg(options::OPT_shared);
217 bool IsPIE = Args.hasArg(options::OPT_pie);
218 bool IncStdLib = !Args.hasArg(options::OPT_nostdlib);
219 bool IncStartFiles = !Args.hasArg(options::OPT_nostartfiles);
220 bool IncDefLibs = !Args.hasArg(options::OPT_nodefaultlibs);
222 const char *Exec = Args.MakeArgString(HTC.GetLinkerPath());
223 bool UseLLD = (llvm::sys::path::filename(Exec).equals_insensitive("ld.lld") ||
224 llvm::sys::path::stem(Exec).equals_insensitive("ld.lld"));
225 bool UseShared = IsShared && !IsStatic;
226 StringRef CpuVer = toolchains::HexagonToolChain::GetTargetCPUVersion(Args);
228 bool NeedsSanitizerDeps = addSanitizerRuntimes(HTC, Args, CmdArgs);
230 //----------------------------------------------------------------------------
231 // Silence warnings for various options
232 //----------------------------------------------------------------------------
233 Args.ClaimAllArgs(options::OPT_g_Group);
234 Args.ClaimAllArgs(options::OPT_emit_llvm);
235 Args.ClaimAllArgs(options::OPT_w); // Other warning options are already
236 // handled somewhere else.
237 Args.ClaimAllArgs(options::OPT_static_libgcc);
239 //----------------------------------------------------------------------------
241 //----------------------------------------------------------------------------
242 if (Args.hasArg(options::OPT_s))
243 CmdArgs.push_back("-s");
245 if (Args.hasArg(options::OPT_r))
246 CmdArgs.push_back("-r");
248 for (const auto &Opt : HTC.ExtraOpts)
249 CmdArgs.push_back(Opt.c_str());
252 CmdArgs.push_back("-march=hexagon");
253 CmdArgs.push_back(Args.MakeArgString("-mcpu=hexagon" + CpuVer));
257 CmdArgs.push_back("-shared");
258 // The following should be the default, but doing as hexagon-gcc does.
259 CmdArgs.push_back("-call_shared");
263 CmdArgs.push_back("-static");
265 if (IsPIE && !IsShared)
266 CmdArgs.push_back("-pie");
268 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
269 CmdArgs.push_back(Args.MakeArgString("-G" + Twine(G.getValue())));
270 UseG0 = G.getValue() == 0;
273 CmdArgs.push_back("-o");
274 CmdArgs.push_back(Output.getFilename());
276 if (HTC.getTriple().isMusl()) {
277 if (!Args.hasArg(options::OPT_shared, options::OPT_static))
278 CmdArgs.push_back("-dynamic-linker=/lib/ld-musl-hexagon.so.1");
280 if (!Args.hasArg(options::OPT_shared, options::OPT_nostartfiles,
281 options::OPT_nostdlib))
282 CmdArgs.push_back(Args.MakeArgString(D.SysRoot + "/usr/lib/crt1.o"));
283 else if (Args.hasArg(options::OPT_shared) &&
284 !Args.hasArg(options::OPT_nostartfiles, options::OPT_nostdlib))
285 CmdArgs.push_back(Args.MakeArgString(D.SysRoot + "/usr/lib/crti.o"));
288 Args.MakeArgString(StringRef("-L") + D.SysRoot + "/usr/lib"));
289 Args.AddAllArgs(CmdArgs,
290 {options::OPT_T_Group, options::OPT_e, options::OPT_s,
291 options::OPT_t, options::OPT_u_Group});
292 AddLinkerInputs(HTC, Inputs, Args, CmdArgs, JA);
294 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
295 if (NeedsSanitizerDeps) {
296 linkSanitizerRuntimeDeps(HTC, CmdArgs);
298 CmdArgs.push_back("-lunwind");
301 CmdArgs.push_back("-lclang_rt.builtins-hexagon");
302 CmdArgs.push_back("-lc");
305 if (HTC.ShouldLinkCXXStdlib(Args))
306 HTC.AddCXXStdlibLibArgs(Args, CmdArgs);
311 //----------------------------------------------------------------------------
313 //----------------------------------------------------------------------------
314 std::vector<std::string> OsLibs;
315 bool HasStandalone = false;
316 for (const Arg *A : Args.filtered(options::OPT_moslib_EQ)) {
318 OsLibs.emplace_back(A->getValue());
319 HasStandalone = HasStandalone || (OsLibs.back() == "standalone");
321 if (OsLibs.empty()) {
322 OsLibs.push_back("standalone");
323 HasStandalone = true;
326 //----------------------------------------------------------------------------
328 //----------------------------------------------------------------------------
329 const std::string MCpuSuffix = "/" + CpuVer.str();
330 const std::string MCpuG0Suffix = MCpuSuffix + "/G0";
331 const std::string RootDir =
332 HTC.getHexagonTargetDir(D.InstalledDir, D.PrefixDirs) + "/";
333 const std::string StartSubDir =
334 "hexagon/lib" + (UseG0 ? MCpuG0Suffix : MCpuSuffix);
336 auto Find = [&HTC] (const std::string &RootDir, const std::string &SubDir,
337 const char *Name) -> std::string {
338 std::string RelName = SubDir + Name;
339 std::string P = HTC.GetFilePath(RelName.c_str());
340 if (llvm::sys::fs::exists(P))
342 return RootDir + RelName;
345 if (IncStdLib && IncStartFiles) {
348 std::string Crt0SA = Find(RootDir, StartSubDir, "/crt0_standalone.o");
349 CmdArgs.push_back(Args.MakeArgString(Crt0SA));
351 std::string Crt0 = Find(RootDir, StartSubDir, "/crt0.o");
352 CmdArgs.push_back(Args.MakeArgString(Crt0));
354 std::string Init = UseShared
355 ? Find(RootDir, StartSubDir + "/pic", "/initS.o")
356 : Find(RootDir, StartSubDir, "/init.o");
357 CmdArgs.push_back(Args.MakeArgString(Init));
360 //----------------------------------------------------------------------------
361 // Library Search Paths
362 //----------------------------------------------------------------------------
363 const ToolChain::path_list &LibPaths = HTC.getFilePaths();
364 for (const auto &LibPath : LibPaths)
365 CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
367 //----------------------------------------------------------------------------
369 //----------------------------------------------------------------------------
370 Args.AddAllArgs(CmdArgs,
371 {options::OPT_T_Group, options::OPT_e, options::OPT_s,
372 options::OPT_t, options::OPT_u_Group});
374 AddLinkerInputs(HTC, Inputs, Args, CmdArgs, JA);
376 //----------------------------------------------------------------------------
378 //----------------------------------------------------------------------------
379 if (IncStdLib && IncDefLibs) {
381 if (HTC.ShouldLinkCXXStdlib(Args))
382 HTC.AddCXXStdlibLibArgs(Args, CmdArgs);
383 CmdArgs.push_back("-lm");
386 CmdArgs.push_back("--start-group");
389 for (StringRef Lib : OsLibs)
390 CmdArgs.push_back(Args.MakeArgString("-l" + Lib));
391 CmdArgs.push_back("-lc");
393 CmdArgs.push_back("-lgcc");
395 CmdArgs.push_back("--end-group");
398 //----------------------------------------------------------------------------
400 //----------------------------------------------------------------------------
401 if (IncStdLib && IncStartFiles) {
402 std::string Fini = UseShared
403 ? Find(RootDir, StartSubDir + "/pic", "/finiS.o")
404 : Find(RootDir, StartSubDir, "/fini.o");
405 CmdArgs.push_back(Args.MakeArgString(Fini));
409 void hexagon::Linker::ConstructJob(Compilation &C, const JobAction &JA,
410 const InputInfo &Output,
411 const InputInfoList &Inputs,
413 const char *LinkingOutput) const {
414 auto &HTC = static_cast<const toolchains::HexagonToolChain&>(getToolChain());
416 ArgStringList CmdArgs;
417 constructHexagonLinkArgs(C, JA, HTC, Output, Inputs, Args, CmdArgs,
420 const char *Exec = Args.MakeArgString(HTC.GetLinkerPath());
421 C.addCommand(std::make_unique<Command>(JA, *this,
422 ResponseFileSupport::AtFileCurCP(),
423 Exec, CmdArgs, Inputs, Output));
425 // Hexagon tools end.
427 /// Hexagon Toolchain
429 std::string HexagonToolChain::getHexagonTargetDir(
430 const std::string &InstalledDir,
431 const SmallVectorImpl<std::string> &PrefixDirs) const {
432 std::string InstallRelDir;
433 const Driver &D = getDriver();
435 // Locate the rest of the toolchain ...
436 for (auto &I : PrefixDirs)
437 if (D.getVFS().exists(I))
440 if (getVFS().exists(InstallRelDir = InstalledDir + "/../target"))
441 return InstallRelDir;
446 Optional<unsigned> HexagonToolChain::getSmallDataThreshold(
447 const ArgList &Args) {
449 if (Arg *A = Args.getLastArg(options::OPT_G)) {
451 } else if (Args.getLastArg(options::OPT_shared, options::OPT_fpic,
452 options::OPT_fPIC)) {
457 if (!Gn.getAsInteger(10, G))
463 std::string HexagonToolChain::getCompilerRTPath() const {
464 SmallString<128> Dir(getDriver().SysRoot);
465 llvm::sys::path::append(Dir, "usr", "lib");
466 Dir += SelectedMultilib.gccSuffix();
467 return std::string(Dir.str());
470 void HexagonToolChain::getHexagonLibraryPaths(const ArgList &Args,
471 ToolChain::path_list &LibPaths) const {
472 const Driver &D = getDriver();
474 //----------------------------------------------------------------------------
476 //----------------------------------------------------------------------------
477 for (Arg *A : Args.filtered(options::OPT_L))
478 for (const char *Value : A->getValues())
479 LibPaths.push_back(Value);
481 //----------------------------------------------------------------------------
482 // Other standard paths
483 //----------------------------------------------------------------------------
484 std::vector<std::string> RootDirs;
485 std::copy(D.PrefixDirs.begin(), D.PrefixDirs.end(),
486 std::back_inserter(RootDirs));
488 std::string TargetDir = getHexagonTargetDir(D.getInstalledDir(),
490 if (!llvm::is_contained(RootDirs, TargetDir))
491 RootDirs.push_back(TargetDir);
493 bool HasPIC = Args.hasArg(options::OPT_fpic, options::OPT_fPIC);
494 // Assume G0 with -shared.
495 bool HasG0 = Args.hasArg(options::OPT_shared);
496 if (auto G = getSmallDataThreshold(Args))
497 HasG0 = G.getValue() == 0;
499 const std::string CpuVer = GetTargetCPUVersion(Args).str();
500 for (auto &Dir : RootDirs) {
501 std::string LibDir = Dir + "/hexagon/lib";
502 std::string LibDirCpu = LibDir + '/' + CpuVer;
505 LibPaths.push_back(LibDirCpu + "/G0/pic");
506 LibPaths.push_back(LibDirCpu + "/G0");
508 LibPaths.push_back(LibDirCpu);
509 LibPaths.push_back(LibDir);
513 HexagonToolChain::HexagonToolChain(const Driver &D, const llvm::Triple &Triple,
514 const llvm::opt::ArgList &Args)
515 : Linux(D, Triple, Args) {
516 const std::string TargetDir = getHexagonTargetDir(D.getInstalledDir(),
519 // Note: Generic_GCC::Generic_GCC adds InstalledDir and getDriver().Dir to
521 const std::string BinDir(TargetDir + "/bin");
522 if (D.getVFS().exists(BinDir))
523 getProgramPaths().push_back(BinDir);
525 ToolChain::path_list &LibPaths = getFilePaths();
527 // Remove paths added by Linux toolchain. Currently Hexagon_TC really targets
528 // 'elf' OS type, so the Linux paths are not appropriate. When we actually
529 // support 'linux' we'll need to fix this up
531 getHexagonLibraryPaths(Args, LibPaths);
534 HexagonToolChain::~HexagonToolChain() {}
536 void HexagonToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
537 ArgStringList &CmdArgs) const {
538 CXXStdlibType Type = GetCXXStdlibType(Args);
540 case ToolChain::CST_Libcxx:
541 CmdArgs.push_back("-lc++");
542 CmdArgs.push_back("-lc++abi");
543 CmdArgs.push_back("-lunwind");
546 case ToolChain::CST_Libstdcxx:
547 CmdArgs.push_back("-lstdc++");
552 Tool *HexagonToolChain::buildAssembler() const {
553 return new tools::hexagon::Assembler(*this);
556 Tool *HexagonToolChain::buildLinker() const {
557 return new tools::hexagon::Linker(*this);
560 unsigned HexagonToolChain::getOptimizationLevel(
561 const llvm::opt::ArgList &DriverArgs) const {
562 // Copied in large part from lib/Frontend/CompilerInvocation.cpp.
563 Arg *A = DriverArgs.getLastArg(options::OPT_O_Group);
567 if (A->getOption().matches(options::OPT_O0))
569 if (A->getOption().matches(options::OPT_Ofast) ||
570 A->getOption().matches(options::OPT_O4))
572 assert(A->getNumValues() != 0);
573 StringRef S(A->getValue());
574 if (S == "s" || S == "z" || S.empty())
580 if (S.getAsInteger(10, OptLevel))
585 void HexagonToolChain::addClangTargetOptions(const ArgList &DriverArgs,
586 ArgStringList &CC1Args,
587 Action::OffloadKind) const {
589 bool UseInitArrayDefault = getTriple().isMusl();
591 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
592 options::OPT_fno_use_init_array,
593 UseInitArrayDefault))
594 CC1Args.push_back("-fno-use-init-array");
596 if (DriverArgs.hasArg(options::OPT_ffixed_r19)) {
597 CC1Args.push_back("-target-feature");
598 CC1Args.push_back("+reserved-r19");
600 if (isAutoHVXEnabled(DriverArgs)) {
601 CC1Args.push_back("-mllvm");
602 CC1Args.push_back("-hexagon-autohvx");
606 void HexagonToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
607 ArgStringList &CC1Args) const {
608 if (DriverArgs.hasArg(options::OPT_nostdinc))
611 const bool IsELF = !getTriple().isMusl() && !getTriple().isOSLinux();
612 const bool IsLinuxMusl = getTriple().isMusl() && getTriple().isOSLinux();
614 const Driver &D = getDriver();
615 SmallString<128> ResourceDirInclude(D.ResourceDir);
617 llvm::sys::path::append(ResourceDirInclude, "include");
618 if (!DriverArgs.hasArg(options::OPT_nobuiltininc) &&
619 (!IsLinuxMusl || DriverArgs.hasArg(options::OPT_nostdlibinc)))
620 addSystemInclude(DriverArgs, CC1Args, ResourceDirInclude);
622 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
625 const bool HasSysRoot = !D.SysRoot.empty();
627 SmallString<128> P(D.SysRoot);
629 llvm::sys::path::append(P, "usr/include");
631 llvm::sys::path::append(P, "include");
633 addExternCSystemInclude(DriverArgs, CC1Args, P.str());
635 addSystemInclude(DriverArgs, CC1Args, P + "/usr/local/include");
637 AddMultilibIncludeArgs(DriverArgs, CC1Args);
640 if (!DriverArgs.hasArg(options::OPT_nobuiltininc) && IsLinuxMusl)
641 addSystemInclude(DriverArgs, CC1Args, ResourceDirInclude);
645 std::string TargetDir = getHexagonTargetDir(D.getInstalledDir(),
647 addExternCSystemInclude(DriverArgs, CC1Args, TargetDir + "/hexagon/include");
650 void HexagonToolChain::addLibCxxIncludePaths(
651 const llvm::opt::ArgList &DriverArgs,
652 llvm::opt::ArgStringList &CC1Args) const {
653 const Driver &D = getDriver();
654 if (!D.SysRoot.empty() && getTriple().isMusl())
655 addLibStdCXXIncludePaths(D.SysRoot + "/usr/include/c++/v1", "", "",
656 DriverArgs, CC1Args);
657 else if (getTriple().isMusl())
658 addLibStdCXXIncludePaths("/usr/include/c++/v1", "", "", DriverArgs,
661 std::string TargetDir = getHexagonTargetDir(D.InstalledDir, D.PrefixDirs);
662 addLibStdCXXIncludePaths(TargetDir + "/hexagon/include/c++/v1", "", "",
663 DriverArgs, CC1Args);
666 void HexagonToolChain::addLibStdCxxIncludePaths(
667 const llvm::opt::ArgList &DriverArgs,
668 llvm::opt::ArgStringList &CC1Args) const {
669 const Driver &D = getDriver();
670 std::string TargetDir = getHexagonTargetDir(D.InstalledDir, D.PrefixDirs);
671 addLibStdCXXIncludePaths(TargetDir + "/hexagon/include/c++", "", "",
672 DriverArgs, CC1Args);
675 ToolChain::CXXStdlibType
676 HexagonToolChain::GetCXXStdlibType(const ArgList &Args) const {
677 Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
679 if (getTriple().isMusl())
680 return ToolChain::CST_Libcxx;
682 return ToolChain::CST_Libstdcxx;
684 StringRef Value = A->getValue();
685 if (Value != "libstdc++" && Value != "libc++")
686 getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args);
688 if (Value == "libstdc++")
689 return ToolChain::CST_Libstdcxx;
690 else if (Value == "libc++")
691 return ToolChain::CST_Libcxx;
693 return ToolChain::CST_Libstdcxx;
696 bool HexagonToolChain::isAutoHVXEnabled(const llvm::opt::ArgList &Args) {
697 if (Arg *A = Args.getLastArg(options::OPT_fvectorize,
698 options::OPT_fno_vectorize))
699 return A->getOption().matches(options::OPT_fvectorize);
704 // Returns the default CPU for Hexagon. This is the default compilation target
705 // if no Hexagon processor is selected at the command-line.
707 StringRef HexagonToolChain::GetDefaultCPU() {
711 StringRef HexagonToolChain::GetTargetCPUVersion(const ArgList &Args) {
712 Arg *CpuArg = nullptr;
713 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
716 StringRef CPU = CpuArg ? CpuArg->getValue() : GetDefaultCPU();
717 if (CPU.startswith("hexagon"))
718 return CPU.substr(sizeof("hexagon") - 1);