clang/lib/Driver/ToolChains/VEToolchain.cpp

   1 //===--- VE.cpp - VE 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 "VEToolchain.h"
  10 #include "CommonArgs.h"
  11 #include "clang/Driver/Compilation.h"
  12 #include "clang/Driver/Driver.h"
  13 #include "clang/Driver/Options.h"
  14 #include "llvm/Option/ArgList.h"
  15 #include "llvm/Support/FileSystem.h"
  16 #include "llvm/Support/Path.h"
  17 #include <cstdlib> // ::getenv
  18
  19 using namespace clang::driver;
  20 using namespace clang::driver::toolchains;
  21 using namespace clang;
  22 using namespace llvm::opt;
  23
  24 /// VE tool chain
  25 VEToolChain::VEToolChain(const Driver &D, const llvm::Triple &Triple,
  26                          const ArgList &Args)
  27     : Linux(D, Triple, Args) {
  28   getProgramPaths().push_back("/opt/nec/ve/bin");
  29   // ProgramPaths are found via 'PATH' environment variable.
  30
  31   // Default library paths are following:
  32   //   ${RESOURCEDIR}/lib/ve-unknown-linux-gnu,
  33   // These are OK.
  34
  35   // Default file paths are following:
  36   //   ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPath)
  37   //   /lib/../lib64,
  38   //   /usr/lib/../lib64,
  39   //   ${BINPATH}/../lib,
  40   //   /lib,
  41   //   /usr/lib,
  42   // These are OK for host, but no go for VE.
  43
  44   // Define file paths from scratch here.
  45   getFilePaths().clear();
  46
  47   // Add library directories:
  48   //   ${BINPATH}/../lib/ve-unknown-linux-gnu, (== getStdlibPath)
  49   //   ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPath)
  50   //   ${SYSROOT}/opt/nec/ve/lib,
  51   for (auto &Path : getStdlibPaths())
  52     getFilePaths().push_back(std::move(Path));
  53   getFilePaths().push_back(getArchSpecificLibPath());
  54   getFilePaths().push_back(computeSysRoot() + "/opt/nec/ve/lib");
  55 }
  56
  57 Tool *VEToolChain::buildAssembler() const {
  58   return new tools::gnutools::Assembler(*this);
  59 }
  60
  61 Tool *VEToolChain::buildLinker() const {
  62   return new tools::gnutools::Linker(*this);
  63 }
  64
  65 bool VEToolChain::isPICDefault() const { return false; }
  66
  67 bool VEToolChain::isPIEDefault(const llvm::opt::ArgList &Args) const {
  68   return false;
  69 }
  70
  71 bool VEToolChain::isPICDefaultForced() const { return false; }
  72
  73 bool VEToolChain::SupportsProfiling() const { return false; }
  74
  75 bool VEToolChain::hasBlocksRuntime() const { return false; }
  76
  77 void VEToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
  78                                             ArgStringList &CC1Args) const {
  79   if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
  80     return;
  81
  82   if (DriverArgs.hasArg(options::OPT_nobuiltininc) &&
  83       DriverArgs.hasArg(options::OPT_nostdlibinc))
  84     return;
  85
  86   if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
  87     SmallString<128> P(getDriver().ResourceDir);
  88     llvm::sys::path::append(P, "include");
  89     addSystemInclude(DriverArgs, CC1Args, P);
  90   }
  91
  92   if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) {
  93     if (const char *cl_include_dir = getenv("NCC_C_INCLUDE_PATH")) {
  94       SmallVector<StringRef, 4> Dirs;
  95       const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};
  96       StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr));
  97       ArrayRef<StringRef> DirVec(Dirs);
  98       addSystemIncludes(DriverArgs, CC1Args, DirVec);
  99     } else {
 100       addSystemInclude(DriverArgs, CC1Args,
 101                        getDriver().SysRoot + "/opt/nec/ve/include");
 102     }
 103   }
 104 }
 105
 106 void VEToolChain::addClangTargetOptions(const ArgList &DriverArgs,
 107                                         ArgStringList &CC1Args,
 108                                         Action::OffloadKind) const {
 109   CC1Args.push_back("-nostdsysteminc");
 110   bool UseInitArrayDefault = true;
 111   if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
 112                           options::OPT_fno_use_init_array, UseInitArrayDefault))
 113     CC1Args.push_back("-fno-use-init-array");
 114 }
 115
 116 void VEToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
 117                                                ArgStringList &CC1Args) const {
 118   if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc) ||
 119       DriverArgs.hasArg(options::OPT_nostdlibinc) ||
 120       DriverArgs.hasArg(options::OPT_nostdincxx))
 121     return;
 122   if (const char *cl_include_dir = getenv("NCC_CPLUS_INCLUDE_PATH")) {
 123     SmallVector<StringRef, 4> Dirs;
 124     const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};
 125     StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr));
 126     ArrayRef<StringRef> DirVec(Dirs);
 127     addSystemIncludes(DriverArgs, CC1Args, DirVec);
 128   } else {
 129     // Add following paths for multiple target installation.
 130     //   ${INSTALLDIR}/include/ve-unknown-linux-gnu/c++/v1,
 131     //   ${INSTALLDIR}/include/c++/v1,
 132     addLibCxxIncludePaths(DriverArgs, CC1Args);
 133   }
 134 }
 135
 136 void VEToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
 137                                       ArgStringList &CmdArgs) const {
 138   assert((GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) &&
 139          "Only -lc++ (aka libxx) is supported in this toolchain.");
 140
 141   tools::addArchSpecificRPath(*this, Args, CmdArgs);
 142
 143   CmdArgs.push_back("-lc++");
 144   if (Args.hasArg(options::OPT_fexperimental_library))
 145     CmdArgs.push_back("-lc++experimental");
 146   CmdArgs.push_back("-lc++abi");
 147   CmdArgs.push_back("-lunwind");
 148   // libc++ requires -lpthread under glibc environment
 149   CmdArgs.push_back("-lpthread");
 150   // libunwind requires -ldl under glibc environment
 151   CmdArgs.push_back("-ldl");
 152 }
 153
 154 llvm::ExceptionHandling
 155 VEToolChain::GetExceptionModel(const ArgList &Args) const {
 156   // VE uses SjLj exceptions.
 157   return llvm::ExceptionHandling::SjLj;
 158 }