| //===--- Hexagon.cpp - Hexagon ToolChain Implementations --------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Hexagon.h" |
| #include "CommonArgs.h" |
| #include "clang/Driver/Compilation.h" |
| #include "clang/Driver/Driver.h" |
| #include "clang/Driver/DriverDiagnostic.h" |
| #include "clang/Driver/InputInfo.h" |
| #include "clang/Driver/Options.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/VirtualFileSystem.h" |
| |
| using namespace clang::driver; |
| using namespace clang::driver::tools; |
| using namespace clang::driver::toolchains; |
| using namespace clang; |
| using namespace llvm::opt; |
| |
| // Default hvx-length for various versions. |
| static StringRef getDefaultHvxLength(StringRef HvxVer) { |
| return llvm::StringSwitch<StringRef>(HvxVer) |
| .Case("v60", "64b") |
| .Case("v62", "64b") |
| .Case("v65", "64b") |
| .Default("128b"); |
| } |
| |
| static void handleHVXWarnings(const Driver &D, const ArgList &Args) { |
| // Handle the unsupported values passed to mhvx-length. |
| if (Arg *A = Args.getLastArg(options::OPT_mhexagon_hvx_length_EQ)) { |
| StringRef Val = A->getValue(); |
| if (!Val.equals_insensitive("64b") && !Val.equals_insensitive("128b")) |
| D.Diag(diag::err_drv_unsupported_option_argument) |
| << A->getSpelling() << Val; |
| } |
| } |
| |
| // Handle hvx target features explicitly. |
| static void handleHVXTargetFeatures(const Driver &D, const ArgList &Args, |
| std::vector<StringRef> &Features, |
| StringRef Cpu, bool &HasHVX) { |
| // Handle HVX warnings. |
| handleHVXWarnings(D, Args); |
| |
| auto makeFeature = [&Args](Twine T, bool Enable) -> StringRef { |
| const std::string &S = T.str(); |
| StringRef Opt(S); |
| Opt.consume_back("="); |
| if (Opt.starts_with("mno-")) |
| Opt = Opt.drop_front(4); |
| else if (Opt.starts_with("m")) |
| Opt = Opt.drop_front(1); |
| return Args.MakeArgString(Twine(Enable ? "+" : "-") + Twine(Opt)); |
| }; |
| |
| auto withMinus = [](StringRef S) -> std::string { |
| return "-" + S.str(); |
| }; |
| |
| // Drop tiny core suffix for HVX version. |
| std::string HvxVer = |
| (Cpu.back() == 'T' || Cpu.back() == 't' ? Cpu.drop_back(1) : Cpu).str(); |
| HasHVX = false; |
| |
| // Handle -mhvx, -mhvx=, -mno-hvx. If versioned and versionless flags |
| // are both present, the last one wins. |
| Arg *HvxEnablingArg = |
| Args.getLastArg(options::OPT_mhexagon_hvx, options::OPT_mhexagon_hvx_EQ, |
| options::OPT_mno_hexagon_hvx); |
| if (HvxEnablingArg) { |
| if (HvxEnablingArg->getOption().matches(options::OPT_mno_hexagon_hvx)) |
| HvxEnablingArg = nullptr; |
| } |
| |
| if (HvxEnablingArg) { |
| // If -mhvx[=] was given, it takes precedence. |
| if (Arg *A = Args.getLastArg(options::OPT_mhexagon_hvx, |
| options::OPT_mhexagon_hvx_EQ)) { |
| // If the version was given, set HvxVer. Otherwise HvxVer |
| // will remain equal to the CPU version. |
| if (A->getOption().matches(options::OPT_mhexagon_hvx_EQ)) |
| HvxVer = StringRef(A->getValue()).lower(); |
| } |
| HasHVX = true; |
| Features.push_back(makeFeature(Twine("hvx") + HvxVer, true)); |
| } else if (Arg *A = Args.getLastArg(options::OPT_mno_hexagon_hvx)) { |
| // If there was an explicit -mno-hvx, add -hvx to target features. |
| Features.push_back(makeFeature(A->getOption().getName(), false)); |
| } |
| |
| StringRef HvxLen = getDefaultHvxLength(HvxVer); |
| |
| // Handle -mhvx-length=. |
| if (Arg *A = Args.getLastArg(options::OPT_mhexagon_hvx_length_EQ)) { |
| // These flags are valid only if HVX in enabled. |
| if (!HasHVX) |
| D.Diag(diag::err_drv_needs_hvx) << withMinus(A->getOption().getName()); |
| else if (A->getOption().matches(options::OPT_mhexagon_hvx_length_EQ)) |
| HvxLen = A->getValue(); |
| } |
| |
| if (HasHVX) { |
| StringRef L = makeFeature(Twine("hvx-length") + HvxLen.lower(), true); |
| Features.push_back(L); |
| } |
| |
| unsigned HvxVerNum; |
| // getAsInteger returns 'true' on error. |
| if (StringRef(HvxVer).drop_front(1).getAsInteger(10, HvxVerNum)) |
| HvxVerNum = 0; |
| |
| // Handle HVX floating point flags. |
| auto checkFlagHvxVersion = |
| [&](auto FlagOn, auto FlagOff, |
| unsigned MinVerNum) -> std::optional<StringRef> { |
| // Return an std::optional<StringRef>: |
| // - std::nullopt indicates a verification failure, or that the flag was not |
| // present in Args. |
| // - Otherwise the returned value is that name of the feature to add |
| // to Features. |
| Arg *A = Args.getLastArg(FlagOn, FlagOff); |
| if (!A) |
| return std::nullopt; |
| |
| StringRef OptName = A->getOption().getName(); |
| if (A->getOption().matches(FlagOff)) |
| return makeFeature(OptName, false); |
| |
| if (!HasHVX) { |
| D.Diag(diag::err_drv_needs_hvx) << withMinus(OptName); |
| return std::nullopt; |
| } |
| if (HvxVerNum < MinVerNum) { |
| D.Diag(diag::err_drv_needs_hvx_version) |
| << withMinus(OptName) << ("v" + std::to_string(HvxVerNum)); |
| return std::nullopt; |
| } |
| return makeFeature(OptName, true); |
| }; |
| |
| if (auto F = checkFlagHvxVersion(options::OPT_mhexagon_hvx_qfloat, |
| options::OPT_mno_hexagon_hvx_qfloat, 68)) { |
| Features.push_back(*F); |
| } |
| if (auto F = checkFlagHvxVersion(options::OPT_mhexagon_hvx_ieee_fp, |
| options::OPT_mno_hexagon_hvx_ieee_fp, 68)) { |
| Features.push_back(*F); |
| } |
| } |
| |
| // Hexagon target features. |
| void hexagon::getHexagonTargetFeatures(const Driver &D, |
| const llvm::Triple &Triple, |
| const ArgList &Args, |
| std::vector<StringRef> &Features) { |
| handleTargetFeaturesGroup(D, Triple, Args, Features, |
| options::OPT_m_hexagon_Features_Group); |
| |
| bool UseLongCalls = false; |
| if (Arg *A = Args.getLastArg(options::OPT_mlong_calls, |
| options::OPT_mno_long_calls)) { |
| if (A->getOption().matches(options::OPT_mlong_calls)) |
| UseLongCalls = true; |
| } |
| |
| Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls"); |
| |
| bool HasHVX = false; |
| StringRef Cpu(toolchains::HexagonToolChain::GetTargetCPUVersion(Args)); |
| // 't' in Cpu denotes tiny-core micro-architecture. For now, the co-processors |
| // have no dependency on micro-architecture. |
| const bool TinyCore = Cpu.contains('t'); |
| |
| if (TinyCore) |
| Cpu = Cpu.take_front(Cpu.size() - 1); |
| |
| handleHVXTargetFeatures(D, Args, Features, Cpu, HasHVX); |
| |
| if (HexagonToolChain::isAutoHVXEnabled(Args) && !HasHVX) |
| D.Diag(diag::warn_drv_needs_hvx) << "auto-vectorization"; |
| } |
| |
| // Hexagon tools start. |
| void hexagon::Assembler::RenderExtraToolArgs(const JobAction &JA, |
| ArgStringList &CmdArgs) const { |
| } |
| |
| void hexagon::Assembler::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, |
| const ArgList &Args, |
| const char *LinkingOutput) const { |
| claimNoWarnArgs(Args); |
| |
| auto &HTC = static_cast<const toolchains::HexagonToolChain&>(getToolChain()); |
| const Driver &D = HTC.getDriver(); |
| ArgStringList CmdArgs; |
| |
| CmdArgs.push_back("--arch=hexagon"); |
| |
| RenderExtraToolArgs(JA, CmdArgs); |
| |
| const char *AsName = "llvm-mc"; |
| CmdArgs.push_back("-filetype=obj"); |
| CmdArgs.push_back(Args.MakeArgString( |
| "-mcpu=hexagon" + |
| toolchains::HexagonToolChain::GetTargetCPUVersion(Args))); |
| |
| addSanitizerRuntimes(HTC, Args, CmdArgs); |
| |
| assert((Output.isFilename() || Output.isNothing()) && "Invalid output."); |
| if (Output.isFilename()) { |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| } else { |
| CmdArgs.push_back("-fsyntax-only"); |
| } |
| |
| if (Arg *A = Args.getLastArg(options::OPT_mhexagon_hvx_ieee_fp, |
| options::OPT_mno_hexagon_hvx_ieee_fp)) { |
| if (A->getOption().matches(options::OPT_mhexagon_hvx_ieee_fp)) |
| CmdArgs.push_back("-mhvx-ieee-fp"); |
| } |
| |
| if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) { |
| CmdArgs.push_back(Args.MakeArgString("-gpsize=" + Twine(*G))); |
| } |
| |
| Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); |
| |
| // Only pass -x if gcc will understand it; otherwise hope gcc |
| // understands the suffix correctly. The main use case this would go |
| // wrong in is for linker inputs if they happened to have an odd |
| // suffix; really the only way to get this to happen is a command |
| // like '-x foobar a.c' which will treat a.c like a linker input. |
| // |
| // FIXME: For the linker case specifically, can we safely convert |
| // inputs into '-Wl,' options? |
| for (const auto &II : Inputs) { |
| // Don't try to pass LLVM or AST inputs to a generic gcc. |
| if (types::isLLVMIR(II.getType())) |
| D.Diag(clang::diag::err_drv_no_linker_llvm_support) |
| << HTC.getTripleString(); |
| else if (II.getType() == types::TY_AST) |
| D.Diag(clang::diag::err_drv_no_ast_support) |
| << HTC.getTripleString(); |
| else if (II.getType() == types::TY_ModuleFile) |
| D.Diag(diag::err_drv_no_module_support) |
| << HTC.getTripleString(); |
| |
| if (II.isFilename()) |
| CmdArgs.push_back(II.getFilename()); |
| else |
| // Don't render as input, we need gcc to do the translations. |
| // FIXME: What is this? |
| II.getInputArg().render(Args, CmdArgs); |
| } |
| |
| auto *Exec = Args.MakeArgString(HTC.GetProgramPath(AsName)); |
| C.addCommand(std::make_unique<Command>(JA, *this, |
| ResponseFileSupport::AtFileCurCP(), |
| Exec, CmdArgs, Inputs, Output)); |
| } |
| |
| void hexagon::Linker::RenderExtraToolArgs(const JobAction &JA, |
| ArgStringList &CmdArgs) const { |
| } |
| |
| static void |
| constructHexagonLinkArgs(Compilation &C, const JobAction &JA, |
| const toolchains::HexagonToolChain &HTC, |
| const InputInfo &Output, const InputInfoList &Inputs, |
| const ArgList &Args, ArgStringList &CmdArgs, |
| const char *LinkingOutput) { |
| |
| const Driver &D = HTC.getDriver(); |
| |
| //---------------------------------------------------------------------------- |
| // |
| //---------------------------------------------------------------------------- |
| bool IsStatic = Args.hasArg(options::OPT_static); |
| bool IsShared = Args.hasArg(options::OPT_shared); |
| bool IsPIE = Args.hasArg(options::OPT_pie); |
| bool IncStdLib = !Args.hasArg(options::OPT_nostdlib); |
| bool IncStartFiles = !Args.hasArg(options::OPT_nostartfiles); |
| bool IncDefLibs = !Args.hasArg(options::OPT_nodefaultlibs); |
| bool UseG0 = false; |
| const char *Exec = Args.MakeArgString(HTC.GetLinkerPath()); |
| bool UseLLD = (llvm::sys::path::filename(Exec).equals_insensitive("ld.lld") || |
| llvm::sys::path::stem(Exec).equals_insensitive("ld.lld")); |
| bool UseShared = IsShared && !IsStatic; |
| StringRef CpuVer = toolchains::HexagonToolChain::GetTargetCPUVersion(Args); |
| |
| bool NeedsSanitizerDeps = addSanitizerRuntimes(HTC, Args, CmdArgs); |
| bool NeedsXRayDeps = addXRayRuntime(HTC, Args, CmdArgs); |
| |
| //---------------------------------------------------------------------------- |
| // Silence warnings for various options |
| //---------------------------------------------------------------------------- |
| Args.ClaimAllArgs(options::OPT_g_Group); |
| Args.ClaimAllArgs(options::OPT_emit_llvm); |
| Args.ClaimAllArgs(options::OPT_w); // Other warning options are already |
| // handled somewhere else. |
| Args.ClaimAllArgs(options::OPT_static_libgcc); |
| |
| //---------------------------------------------------------------------------- |
| // |
| //---------------------------------------------------------------------------- |
| if (Args.hasArg(options::OPT_s)) |
| CmdArgs.push_back("-s"); |
| |
| if (Args.hasArg(options::OPT_r)) |
| CmdArgs.push_back("-r"); |
| |
| for (const auto &Opt : HTC.ExtraOpts) |
| CmdArgs.push_back(Opt.c_str()); |
| |
| if (!UseLLD) { |
| CmdArgs.push_back("-march=hexagon"); |
| CmdArgs.push_back(Args.MakeArgString("-mcpu=hexagon" + CpuVer)); |
| } |
| |
| if (IsShared) { |
| CmdArgs.push_back("-shared"); |
| // The following should be the default, but doing as hexagon-gcc does. |
| CmdArgs.push_back("-call_shared"); |
| } |
| |
| if (IsStatic) |
| CmdArgs.push_back("-static"); |
| |
| if (IsPIE && !IsShared) |
| CmdArgs.push_back("-pie"); |
| |
| if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) { |
| CmdArgs.push_back(Args.MakeArgString("-G" + Twine(*G))); |
| UseG0 = *G == 0; |
| } |
| |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| |
| if (HTC.getTriple().isMusl()) { |
| if (!Args.hasArg(options::OPT_shared, options::OPT_static)) |
| CmdArgs.push_back("-dynamic-linker=/lib/ld-musl-hexagon.so.1"); |
| |
| if (!Args.hasArg(options::OPT_shared, options::OPT_nostartfiles, |
| options::OPT_nostdlib)) |
| CmdArgs.push_back(Args.MakeArgString(D.SysRoot + "/usr/lib/crt1.o")); |
| else if (Args.hasArg(options::OPT_shared) && |
| !Args.hasArg(options::OPT_nostartfiles, options::OPT_nostdlib)) |
| CmdArgs.push_back(Args.MakeArgString(D.SysRoot + "/usr/lib/crti.o")); |
| |
| CmdArgs.push_back( |
| Args.MakeArgString(StringRef("-L") + D.SysRoot + "/usr/lib")); |
| Args.addAllArgs(CmdArgs, {options::OPT_T_Group, options::OPT_s, |
| options::OPT_t, options::OPT_u_Group}); |
| AddLinkerInputs(HTC, Inputs, Args, CmdArgs, JA); |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { |
| if (NeedsSanitizerDeps) { |
| linkSanitizerRuntimeDeps(HTC, Args, CmdArgs); |
| |
| CmdArgs.push_back("-lunwind"); |
| } |
| if (NeedsXRayDeps) |
| linkXRayRuntimeDeps(HTC, Args, CmdArgs); |
| |
| CmdArgs.push_back("-lclang_rt.builtins-hexagon"); |
| if (!Args.hasArg(options::OPT_nolibc)) |
| CmdArgs.push_back("-lc"); |
| } |
| if (D.CCCIsCXX()) { |
| if (HTC.ShouldLinkCXXStdlib(Args)) |
| HTC.AddCXXStdlibLibArgs(Args, CmdArgs); |
| } |
| const ToolChain::path_list &LibPaths = HTC.getFilePaths(); |
| for (const auto &LibPath : LibPaths) |
| CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath)); |
| Args.ClaimAllArgs(options::OPT_L); |
| return; |
| } |
| |
| //---------------------------------------------------------------------------- |
| // moslib |
| //---------------------------------------------------------------------------- |
| std::vector<std::string> OsLibs; |
| bool HasStandalone = false; |
| for (const Arg *A : Args.filtered(options::OPT_moslib_EQ)) { |
| A->claim(); |
| OsLibs.emplace_back(A->getValue()); |
| HasStandalone = HasStandalone || (OsLibs.back() == "standalone"); |
| } |
| if (OsLibs.empty()) { |
| OsLibs.push_back("standalone"); |
| HasStandalone = true; |
| } |
| |
| //---------------------------------------------------------------------------- |
| // Start Files |
| //---------------------------------------------------------------------------- |
| const std::string MCpuSuffix = "/" + CpuVer.str(); |
| const std::string MCpuG0Suffix = MCpuSuffix + "/G0"; |
| const std::string RootDir = |
| HTC.getHexagonTargetDir(D.Dir, D.PrefixDirs) + "/"; |
| const std::string StartSubDir = |
| "hexagon/lib" + (UseG0 ? MCpuG0Suffix : MCpuSuffix); |
| |
| auto Find = [&HTC] (const std::string &RootDir, const std::string &SubDir, |
| const char *Name) -> std::string { |
| std::string RelName = SubDir + Name; |
| std::string P = HTC.GetFilePath(RelName.c_str()); |
| if (llvm::sys::fs::exists(P)) |
| return P; |
| return RootDir + RelName; |
| }; |
| |
| if (IncStdLib && IncStartFiles) { |
| if (!IsShared) { |
| if (HasStandalone) { |
| std::string Crt0SA = Find(RootDir, StartSubDir, "/crt0_standalone.o"); |
| CmdArgs.push_back(Args.MakeArgString(Crt0SA)); |
| } |
| std::string Crt0 = Find(RootDir, StartSubDir, "/crt0.o"); |
| CmdArgs.push_back(Args.MakeArgString(Crt0)); |
| } |
| std::string Init = UseShared |
| ? Find(RootDir, StartSubDir + "/pic", "/initS.o") |
| : Find(RootDir, StartSubDir, "/init.o"); |
| CmdArgs.push_back(Args.MakeArgString(Init)); |
| } |
| |
| //---------------------------------------------------------------------------- |
| // Library Search Paths |
| //---------------------------------------------------------------------------- |
| const ToolChain::path_list &LibPaths = HTC.getFilePaths(); |
| for (const auto &LibPath : LibPaths) |
| CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath)); |
| Args.ClaimAllArgs(options::OPT_L); |
| |
| //---------------------------------------------------------------------------- |
| // |
| //---------------------------------------------------------------------------- |
| Args.addAllArgs(CmdArgs, {options::OPT_T_Group, options::OPT_s, |
| options::OPT_t, options::OPT_u_Group}); |
| |
| AddLinkerInputs(HTC, Inputs, Args, CmdArgs, JA); |
| |
| //---------------------------------------------------------------------------- |
| // Libraries |
| //---------------------------------------------------------------------------- |
| if (IncStdLib && IncDefLibs) { |
| if (D.CCCIsCXX()) { |
| if (HTC.ShouldLinkCXXStdlib(Args)) |
| HTC.AddCXXStdlibLibArgs(Args, CmdArgs); |
| CmdArgs.push_back("-lm"); |
| } |
| |
| CmdArgs.push_back("--start-group"); |
| |
| if (!IsShared) { |
| for (StringRef Lib : OsLibs) |
| CmdArgs.push_back(Args.MakeArgString("-l" + Lib)); |
| if (!Args.hasArg(options::OPT_nolibc)) |
| CmdArgs.push_back("-lc"); |
| } |
| CmdArgs.push_back("-lgcc"); |
| |
| CmdArgs.push_back("--end-group"); |
| } |
| |
| //---------------------------------------------------------------------------- |
| // End files |
| //---------------------------------------------------------------------------- |
| if (IncStdLib && IncStartFiles) { |
| std::string Fini = UseShared |
| ? Find(RootDir, StartSubDir + "/pic", "/finiS.o") |
| : Find(RootDir, StartSubDir, "/fini.o"); |
| CmdArgs.push_back(Args.MakeArgString(Fini)); |
| } |
| } |
| |
| void hexagon::Linker::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, |
| const ArgList &Args, |
| const char *LinkingOutput) const { |
| auto &HTC = static_cast<const toolchains::HexagonToolChain&>(getToolChain()); |
| |
| ArgStringList CmdArgs; |
| constructHexagonLinkArgs(C, JA, HTC, Output, Inputs, Args, CmdArgs, |
| LinkingOutput); |
| |
| const char *Exec = Args.MakeArgString(HTC.GetLinkerPath()); |
| C.addCommand(std::make_unique<Command>(JA, *this, |
| ResponseFileSupport::AtFileCurCP(), |
| Exec, CmdArgs, Inputs, Output)); |
| } |
| // Hexagon tools end. |
| |
| /// Hexagon Toolchain |
| |
| std::string HexagonToolChain::getHexagonTargetDir( |
| const std::string &InstalledDir, |
| const SmallVectorImpl<std::string> &PrefixDirs) const { |
| std::string InstallRelDir; |
| const Driver &D = getDriver(); |
| |
| // Locate the rest of the toolchain ... |
| for (auto &I : PrefixDirs) |
| if (D.getVFS().exists(I)) |
| return I; |
| |
| if (getVFS().exists(InstallRelDir = InstalledDir + "/../target")) |
| return InstallRelDir; |
| |
| return InstalledDir; |
| } |
| |
| std::optional<unsigned> |
| HexagonToolChain::getSmallDataThreshold(const ArgList &Args) { |
| StringRef Gn = ""; |
| if (Arg *A = Args.getLastArg(options::OPT_G)) { |
| Gn = A->getValue(); |
| } else if (Args.getLastArg(options::OPT_shared, options::OPT_fpic, |
| options::OPT_fPIC)) { |
| Gn = "0"; |
| } |
| |
| unsigned G; |
| if (!Gn.getAsInteger(10, G)) |
| return G; |
| |
| return std::nullopt; |
| } |
| |
| std::string HexagonToolChain::getCompilerRTPath() const { |
| SmallString<128> Dir(getDriver().SysRoot); |
| llvm::sys::path::append(Dir, "usr", "lib"); |
| if (!SelectedMultilibs.empty()) { |
| Dir += SelectedMultilibs.back().gccSuffix(); |
| } |
| return std::string(Dir); |
| } |
| |
| void HexagonToolChain::getHexagonLibraryPaths(const ArgList &Args, |
| ToolChain::path_list &LibPaths) const { |
| const Driver &D = getDriver(); |
| |
| //---------------------------------------------------------------------------- |
| // -L Args |
| //---------------------------------------------------------------------------- |
| for (Arg *A : Args.filtered(options::OPT_L)) |
| llvm::append_range(LibPaths, A->getValues()); |
| |
| //---------------------------------------------------------------------------- |
| // Other standard paths |
| //---------------------------------------------------------------------------- |
| std::vector<std::string> RootDirs; |
| std::copy(D.PrefixDirs.begin(), D.PrefixDirs.end(), |
| std::back_inserter(RootDirs)); |
| |
| std::string TargetDir = getHexagonTargetDir(D.Dir, D.PrefixDirs); |
| if (!llvm::is_contained(RootDirs, TargetDir)) |
| RootDirs.push_back(TargetDir); |
| |
| bool HasPIC = Args.hasArg(options::OPT_fpic, options::OPT_fPIC); |
| // Assume G0 with -shared. |
| bool HasG0 = Args.hasArg(options::OPT_shared); |
| if (auto G = getSmallDataThreshold(Args)) |
| HasG0 = *G == 0; |
| |
| const std::string CpuVer = GetTargetCPUVersion(Args).str(); |
| for (auto &Dir : RootDirs) { |
| std::string LibDir = Dir + "/hexagon/lib"; |
| std::string LibDirCpu = LibDir + '/' + CpuVer; |
| if (HasG0) { |
| if (HasPIC) |
| LibPaths.push_back(LibDirCpu + "/G0/pic"); |
| LibPaths.push_back(LibDirCpu + "/G0"); |
| } |
| LibPaths.push_back(LibDirCpu); |
| LibPaths.push_back(LibDir); |
| } |
| } |
| |
| HexagonToolChain::HexagonToolChain(const Driver &D, const llvm::Triple &Triple, |
| const llvm::opt::ArgList &Args) |
| : Linux(D, Triple, Args) { |
| const std::string TargetDir = getHexagonTargetDir(D.Dir, D.PrefixDirs); |
| |
| // Note: Generic_GCC::Generic_GCC adds InstalledDir and getDriver().Dir to |
| // program paths |
| const std::string BinDir(TargetDir + "/bin"); |
| if (D.getVFS().exists(BinDir)) |
| getProgramPaths().push_back(BinDir); |
| |
| ToolChain::path_list &LibPaths = getFilePaths(); |
| |
| // Remove paths added by Linux toolchain. Currently Hexagon_TC really targets |
| // 'elf' OS type, so the Linux paths are not appropriate. When we actually |
| // support 'linux' we'll need to fix this up |
| LibPaths.clear(); |
| getHexagonLibraryPaths(Args, LibPaths); |
| } |
| |
| HexagonToolChain::~HexagonToolChain() {} |
| |
| void HexagonToolChain::AddCXXStdlibLibArgs(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| CXXStdlibType Type = GetCXXStdlibType(Args); |
| switch (Type) { |
| case ToolChain::CST_Libcxx: |
| CmdArgs.push_back("-lc++"); |
| if (Args.hasArg(options::OPT_fexperimental_library)) |
| CmdArgs.push_back("-lc++experimental"); |
| CmdArgs.push_back("-lc++abi"); |
| CmdArgs.push_back("-lunwind"); |
| break; |
| |
| case ToolChain::CST_Libstdcxx: |
| CmdArgs.push_back("-lstdc++"); |
| break; |
| } |
| } |
| |
| Tool *HexagonToolChain::buildAssembler() const { |
| return new tools::hexagon::Assembler(*this); |
| } |
| |
| Tool *HexagonToolChain::buildLinker() const { |
| return new tools::hexagon::Linker(*this); |
| } |
| |
| unsigned HexagonToolChain::getOptimizationLevel( |
| const llvm::opt::ArgList &DriverArgs) const { |
| // Copied in large part from lib/Frontend/CompilerInvocation.cpp. |
| Arg *A = DriverArgs.getLastArg(options::OPT_O_Group); |
| if (!A) |
| return 0; |
| |
| if (A->getOption().matches(options::OPT_O0)) |
| return 0; |
| if (A->getOption().matches(options::OPT_Ofast) || |
| A->getOption().matches(options::OPT_O4)) |
| return 3; |
| assert(A->getNumValues() != 0); |
| StringRef S(A->getValue()); |
| if (S == "s" || S == "z" || S.empty()) |
| return 2; |
| if (S == "g") |
| return 1; |
| |
| unsigned OptLevel; |
| if (S.getAsInteger(10, OptLevel)) |
| return 0; |
| return OptLevel; |
| } |
| |
| void HexagonToolChain::addClangTargetOptions(const ArgList &DriverArgs, |
| ArgStringList &CC1Args, |
| Action::OffloadKind) const { |
| |
| bool UseInitArrayDefault = getTriple().isMusl(); |
| |
| if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, |
| options::OPT_fno_use_init_array, |
| UseInitArrayDefault)) |
| CC1Args.push_back("-fno-use-init-array"); |
| |
| if (DriverArgs.hasArg(options::OPT_ffixed_r19)) { |
| CC1Args.push_back("-target-feature"); |
| CC1Args.push_back("+reserved-r19"); |
| } |
| if (isAutoHVXEnabled(DriverArgs)) { |
| CC1Args.push_back("-mllvm"); |
| CC1Args.push_back("-hexagon-autohvx"); |
| } |
| } |
| |
| void HexagonToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const { |
| if (DriverArgs.hasArg(options::OPT_nostdinc)) |
| return; |
| |
| const bool IsELF = !getTriple().isMusl() && !getTriple().isOSLinux(); |
| const bool IsLinuxMusl = getTriple().isMusl() && getTriple().isOSLinux(); |
| |
| const Driver &D = getDriver(); |
| SmallString<128> ResourceDirInclude(D.ResourceDir); |
| if (!IsELF) { |
| llvm::sys::path::append(ResourceDirInclude, "include"); |
| if (!DriverArgs.hasArg(options::OPT_nobuiltininc) && |
| (!IsLinuxMusl || DriverArgs.hasArg(options::OPT_nostdlibinc))) |
| addSystemInclude(DriverArgs, CC1Args, ResourceDirInclude); |
| } |
| if (DriverArgs.hasArg(options::OPT_nostdlibinc)) |
| return; |
| |
| const bool HasSysRoot = !D.SysRoot.empty(); |
| if (HasSysRoot) { |
| SmallString<128> P(D.SysRoot); |
| if (IsLinuxMusl) |
| llvm::sys::path::append(P, "usr/include"); |
| else |
| llvm::sys::path::append(P, "include"); |
| |
| addExternCSystemInclude(DriverArgs, CC1Args, P.str()); |
| // LOCAL_INCLUDE_DIR |
| addSystemInclude(DriverArgs, CC1Args, P + "/usr/local/include"); |
| // TOOL_INCLUDE_DIR |
| AddMultilibIncludeArgs(DriverArgs, CC1Args); |
| } |
| |
| if (!DriverArgs.hasArg(options::OPT_nobuiltininc) && IsLinuxMusl) |
| addSystemInclude(DriverArgs, CC1Args, ResourceDirInclude); |
| |
| if (HasSysRoot) |
| return; |
| std::string TargetDir = getHexagonTargetDir(D.Dir, D.PrefixDirs); |
| addExternCSystemInclude(DriverArgs, CC1Args, TargetDir + "/hexagon/include"); |
| } |
| |
| void HexagonToolChain::addLibCxxIncludePaths( |
| const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| const Driver &D = getDriver(); |
| if (!D.SysRoot.empty() && getTriple().isMusl()) |
| addLibStdCXXIncludePaths(D.SysRoot + "/usr/include/c++/v1", "", "", |
| DriverArgs, CC1Args); |
| else if (getTriple().isMusl()) |
| addLibStdCXXIncludePaths("/usr/include/c++/v1", "", "", DriverArgs, |
| CC1Args); |
| else { |
| std::string TargetDir = getHexagonTargetDir(D.Dir, D.PrefixDirs); |
| addLibStdCXXIncludePaths(TargetDir + "/hexagon/include/c++/v1", "", "", |
| DriverArgs, CC1Args); |
| } |
| } |
| void HexagonToolChain::addLibStdCxxIncludePaths( |
| const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| const Driver &D = getDriver(); |
| std::string TargetDir = getHexagonTargetDir(D.Dir, D.PrefixDirs); |
| addLibStdCXXIncludePaths(TargetDir + "/hexagon/include/c++", "", "", |
| DriverArgs, CC1Args); |
| } |
| |
| ToolChain::CXXStdlibType |
| HexagonToolChain::GetCXXStdlibType(const ArgList &Args) const { |
| Arg *A = Args.getLastArg(options::OPT_stdlib_EQ); |
| if (!A) { |
| if (getTriple().isMusl()) |
| return ToolChain::CST_Libcxx; |
| else |
| return ToolChain::CST_Libstdcxx; |
| } |
| StringRef Value = A->getValue(); |
| if (Value != "libstdc++" && Value != "libc++") |
| getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args); |
| |
| if (Value == "libstdc++") |
| return ToolChain::CST_Libstdcxx; |
| else if (Value == "libc++") |
| return ToolChain::CST_Libcxx; |
| else |
| return ToolChain::CST_Libstdcxx; |
| } |
| |
| bool HexagonToolChain::isAutoHVXEnabled(const llvm::opt::ArgList &Args) { |
| if (Arg *A = Args.getLastArg(options::OPT_fvectorize, |
| options::OPT_fno_vectorize)) |
| return A->getOption().matches(options::OPT_fvectorize); |
| return false; |
| } |
| |
| // |
| // Returns the default CPU for Hexagon. This is the default compilation target |
| // if no Hexagon processor is selected at the command-line. |
| // |
| StringRef HexagonToolChain::GetDefaultCPU() { |
| return "hexagonv60"; |
| } |
| |
| StringRef HexagonToolChain::GetTargetCPUVersion(const ArgList &Args) { |
| Arg *CpuArg = nullptr; |
| if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) |
| CpuArg = A; |
| |
| StringRef CPU = CpuArg ? CpuArg->getValue() : GetDefaultCPU(); |
| CPU.consume_front("hexagon"); |
| return CPU; |
| } |
