Coverage Report

Created: 2020-09-19 12:23

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Driver/ToolChains/Myriad.cpp
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//===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Myriad.h"
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#include "CommonArgs.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "llvm/Option/ArgList.h"
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using namespace clang::driver;
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using namespace clang::driver::toolchains;
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using namespace clang;
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using namespace llvm::opt;
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using tools::addPathIfExists;
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void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
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                                          const InputInfo &Output,
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                                          const InputInfoList &Inputs,
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                                          const ArgList &Args,
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                                          const char *LinkingOutput) const {
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  ArgStringList CmdArgs;
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  assert(Inputs.size() == 1);
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  const InputInfo &II = Inputs[0];
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  assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
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         II.getType() == types::TY_PP_CXX);
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  if (JA.getKind() == Action::PreprocessJobClass) {
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    Args.ClaimAllArgs();
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    CmdArgs.push_back("-E");
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  } else {
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    assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
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    CmdArgs.push_back("-S");
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    CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
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  }
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  CmdArgs.push_back("-DMYRIAD2");
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  // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
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  // flags, 'g' flags, 'M' flags, optimize flags, warning options,
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  // mcpu flags, mllvm flags, and Xclang flags.
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  // These are spelled the same way in clang and moviCompile.
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  Args.AddAllArgsExcept(
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      CmdArgs,
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      {options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
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       options::OPT_D, options::OPT_U, options::OPT_f_Group,
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       options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
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       options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
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       options::OPT_mllvm, options::OPT_Xclang},
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      {options::OPT_fno_split_dwarf_inlining});
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  Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
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  // If we're producing a dependency file, and assembly is the final action,
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  // then the name of the target in the dependency file should be the '.o'
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  // file, not the '.s' file produced by this step. For example, instead of
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  //  /tmp/mumble.s: mumble.c .../someheader.h
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  // the filename on the lefthand side should be "mumble.o"
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  if (Args.getLastArg(options::OPT_MF) && 
!Args.getLastArg(options::OPT_MT)2
&&
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      C.getActions().size() == 1 &&
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      C.getActions()[0]->getKind() == Action::AssembleJobClass) {
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    Arg *A = Args.getLastArg(options::OPT_o);
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    if (A) {
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      CmdArgs.push_back("-MT");
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      CmdArgs.push_back(Args.MakeArgString(A->getValue()));
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    }
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  }
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  CmdArgs.push_back(II.getFilename());
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  CmdArgs.push_back("-o");
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  CmdArgs.push_back(Output.getFilename());
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  std::string Exec =
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      Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
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  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
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                                         Args.MakeArgString(Exec), CmdArgs,
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                                         Inputs));
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}
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void tools::SHAVE::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
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                                           const InputInfo &Output,
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                                           const InputInfoList &Inputs,
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                                           const ArgList &Args,
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                                           const char *LinkingOutput) const {
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  ArgStringList CmdArgs;
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  assert(Inputs.size() == 1);
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  const InputInfo &II = Inputs[0];
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  assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
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  assert(Output.getType() == types::TY_Object);
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  CmdArgs.push_back("-no6thSlotCompression");
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  const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
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  if (CPUArg)
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    CmdArgs.push_back(
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        Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
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  CmdArgs.push_back("-noSPrefixing");
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  CmdArgs.push_back("-a"); // Mystery option.
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  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
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  for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
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    A->claim();
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    CmdArgs.push_back(
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        Args.MakeArgString(std::string("-i:") + A->getValue(0)));
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  }
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  CmdArgs.push_back(II.getFilename());
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  CmdArgs.push_back(
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      Args.MakeArgString(std::string("-o:") + Output.getFilename()));
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  std::string Exec =
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      Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
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  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
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                                         Args.MakeArgString(Exec), CmdArgs,
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                                         Inputs));
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}
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void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
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                                         const InputInfo &Output,
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                                         const InputInfoList &Inputs,
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                                         const ArgList &Args,
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                                         const char *LinkingOutput) const {
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  const auto &TC =
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      static_cast<const toolchains::MyriadToolChain &>(getToolChain());
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  const llvm::Triple &T = TC.getTriple();
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  ArgStringList CmdArgs;
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  bool UseStartfiles =
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      !Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
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  bool UseDefaultLibs =
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      !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
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  // Silence warning if the args contain both -nostdlib and -stdlib=.
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  Args.getLastArg(options::OPT_stdlib_EQ);
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  if (T.getArch() == llvm::Triple::sparc)
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    CmdArgs.push_back("-EB");
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  else // SHAVE assumes little-endian, and sparcel is expressly so.
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    CmdArgs.push_back("-EL");
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  // The remaining logic is mostly like gnutools::Linker::ConstructJob,
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  // but we never pass through a --sysroot option and various other bits.
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  // For example, there are no sanitizers (yet) nor gold linker.
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  // Eat some arguments that may be present but have no effect.
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  Args.ClaimAllArgs(options::OPT_g_Group);
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  Args.ClaimAllArgs(options::OPT_w);
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  Args.ClaimAllArgs(options::OPT_static_libgcc);
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  if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
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    CmdArgs.push_back("-s");
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  CmdArgs.push_back("-o");
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  CmdArgs.push_back(Output.getFilename());
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  if (UseStartfiles) {
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    // If you want startfiles, it means you want the builtin crti and crtbegin,
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    // but not crt0. Myriad link commands provide their own crt0.o as needed.
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    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
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    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
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  }
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  Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
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                            options::OPT_e, options::OPT_s, options::OPT_t,
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                            options::OPT_Z_Flag, options::OPT_r});
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  TC.AddFilePathLibArgs(Args, CmdArgs);
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  bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
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  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
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  if (UseDefaultLibs) {
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    if (NeedsSanitizerDeps)
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      linkSanitizerRuntimeDeps(TC, CmdArgs);
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    if (C.getDriver().CCCIsCXX()) {
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      if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
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        CmdArgs.push_back("-lc++");
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        CmdArgs.push_back("-lc++abi");
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      } else
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        CmdArgs.push_back("-lstdc++");
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    }
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    if (T.getOS() == llvm::Triple::RTEMS) {
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      CmdArgs.push_back("--start-group");
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      CmdArgs.push_back("-lc");
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      CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
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      // You must provide your own "-L" option to enable finding these.
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      CmdArgs.push_back("-lrtemscpu");
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      CmdArgs.push_back("-lrtemsbsp");
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      CmdArgs.push_back("--end-group");
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    } else {
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      CmdArgs.push_back("-lc");
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      CmdArgs.push_back("-lgcc");
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    }
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  }
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  if (UseStartfiles) {
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    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
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    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
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  }
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  std::string Exec =
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      Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
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  C.addCommand(
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      std::make_unique<Command>(JA, *this, ResponseFileSupport::AtFileCurCP(),
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                                Args.MakeArgString(Exec), CmdArgs, Inputs));
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}
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MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
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                                 const ArgList &Args)
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    : Generic_ELF(D, Triple, Args) {
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  // If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
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  // 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
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  // This won't work to find gcc. Instead we give the installation detector an
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  // extra triple, which is preferable to further hacks of the logic that at
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  // present is based solely on getArch(). In particular, it would be wrong to
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  // choose the myriad installation when targeting a non-myriad sparc install.
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  switch (Triple.getArch()) {
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  default:
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    D.Diag(clang::diag::err_target_unsupported_arch)
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        << Triple.getArchName() << "myriad";
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    LLVM_FALLTHROUGH;
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  case llvm::Triple::shave:
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    return;
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  case llvm::Triple::sparc:
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  case llvm::Triple::sparcel:
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    GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
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  }
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  if (GCCInstallation.isValid()) {
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    // This directory contains crt{i,n,begin,end}.o as well as libgcc.
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    // These files are tied to a particular version of gcc.
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    SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
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    addPathIfExists(D, CompilerSupportDir, getFilePaths());
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  }
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  // libstd++ and libc++ must both be found in this one place.
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  addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
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}
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MyriadToolChain::~MyriadToolChain() {}
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void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
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                                                ArgStringList &CC1Args) const {
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  if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
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    addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
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}
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void MyriadToolChain::addLibCxxIncludePaths(
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    const llvm::opt::ArgList &DriverArgs,
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    llvm::opt::ArgStringList &CC1Args) const {
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  std::string Path(getDriver().getInstalledDir());
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  addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
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}
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void MyriadToolChain::addLibStdCxxIncludePaths(
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    const llvm::opt::ArgList &DriverArgs,
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    llvm::opt::ArgStringList &CC1Args) const {
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  StringRef LibDir = GCCInstallation.getParentLibPath();
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  const GCCVersion &Version = GCCInstallation.getVersion();
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  StringRef TripleStr = GCCInstallation.getTriple().str();
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  const Multilib &Multilib = GCCInstallation.getMultilib();
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  addLibStdCXXIncludePaths(
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      LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
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      "", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
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}
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// MyriadToolChain handles several triples:
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//  {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
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Tool *MyriadToolChain::SelectTool(const JobAction &JA) const {
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  // The inherited method works fine if not targeting the SHAVE.
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  if (!isShaveCompilation(getTriple()))
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    return ToolChain::SelectTool(JA);
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  switch (JA.getKind()) {
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  case Action::PreprocessJobClass:
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  case Action::CompileJobClass:
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    if (!Compiler)
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      Compiler.reset(new tools::SHAVE::Compiler(*this));
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    return Compiler.get();
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  case Action::AssembleJobClass:
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    if (!Assembler)
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      Assembler.reset(new tools::SHAVE::Assembler(*this));
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    return Assembler.get();
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  default:
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    return ToolChain::getTool(JA.getKind());
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  }
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}
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Tool *MyriadToolChain::buildLinker() const {
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  return new tools::Myriad::Linker(*this);
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}
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SanitizerMask MyriadToolChain::getSupportedSanitizers() const {
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  return SanitizerKind::Address;
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}