AMDGPU.cpp revision 360784 
1//===--- AMDGPU.cpp - AMDGPU 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 "AMDGPU.h"
10#include "CommonArgs.h"
11#include "InputInfo.h"
12#include "clang/Driver/Compilation.h"
13#include "clang/Driver/DriverDiagnostic.h"
14#include "llvm/Option/ArgList.h"
15
16using namespace clang::driver;
17using namespace clang::driver::tools;
18using namespace clang::driver::toolchains;
19using namespace clang;
20using namespace llvm::opt;
21
22void amdgpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
23                                  const InputInfo &Output,
24                                  const InputInfoList &Inputs,
25                                  const ArgList &Args,
26                                  const char *LinkingOutput) const {
27
28  std::string Linker = getToolChain().GetProgramPath(getShortName());
29  ArgStringList CmdArgs;
30  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
31  CmdArgs.push_back("-shared");
32  CmdArgs.push_back("-o");
33  CmdArgs.push_back(Output.getFilename());
34  C.addCommand(std::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),
35                                          CmdArgs, Inputs));
36}
37
38void amdgpu::getAMDGPUTargetFeatures(const Driver &D,
39                                     const llvm::opt::ArgList &Args,
40                                     std::vector<StringRef> &Features) {
41  if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi))
42    D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args);
43
44  if (Args.getLastArg(options::OPT_mwavefrontsize64)) {
45    Features.push_back("-wavefrontsize16");
46    Features.push_back("-wavefrontsize32");
47    Features.push_back("+wavefrontsize64");
48  }
49  if (Args.getLastArg(options::OPT_mno_wavefrontsize64)) {
50    Features.push_back("-wavefrontsize16");
51    Features.push_back("+wavefrontsize32");
52    Features.push_back("-wavefrontsize64");
53  }
54
55  handleTargetFeaturesGroup(
56    Args, Features, options::OPT_m_amdgpu_Features_Group);
57}
58
59/// AMDGPU Toolchain
60AMDGPUToolChain::AMDGPUToolChain(const Driver &D, const llvm::Triple &Triple,
61                                 const ArgList &Args)
62    : Generic_ELF(D, Triple, Args),
63      OptionsDefault({{options::OPT_O, "3"},
64                      {options::OPT_cl_std_EQ, "CL1.2"}}) {}
65
66Tool *AMDGPUToolChain::buildLinker() const {
67  return new tools::amdgpu::Linker(*this);
68}
69
70DerivedArgList *
71AMDGPUToolChain::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
72                               Action::OffloadKind DeviceOffloadKind) const {
73
74  DerivedArgList *DAL =
75      Generic_ELF::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
76
77  // Do nothing if not OpenCL (-x cl)
78  if (!Args.getLastArgValue(options::OPT_x).equals("cl"))
79    return DAL;
80
81  if (!DAL)
82    DAL = new DerivedArgList(Args.getBaseArgs());
83  for (auto *A : Args)
84    DAL->append(A);
85
86  const OptTable &Opts = getDriver().getOpts();
87
88  // Phase 1 (.cl -> .bc)
89  if (Args.hasArg(options::OPT_c) && Args.hasArg(options::OPT_emit_llvm)) {
90    DAL->AddFlagArg(nullptr, Opts.getOption(getTriple().isArch64Bit()
91                                                ? options::OPT_m64
92                                                : options::OPT_m32));
93
94    // Have to check OPT_O4, OPT_O0 & OPT_Ofast separately
95    // as they defined that way in Options.td
96    if (!Args.hasArg(options::OPT_O, options::OPT_O0, options::OPT_O4,
97                     options::OPT_Ofast))
98      DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_O),
99                        getOptionDefault(options::OPT_O));
100  }
101
102  return DAL;
103}
104
105void AMDGPUToolChain::addClangTargetOptions(
106    const llvm::opt::ArgList &DriverArgs,
107    llvm::opt::ArgStringList &CC1Args,
108    Action::OffloadKind DeviceOffloadingKind) const {
109  // Default to "hidden" visibility, as object level linking will not be
110  // supported for the foreseeable future.
111  if (!DriverArgs.hasArg(options::OPT_fvisibility_EQ,
112                         options::OPT_fvisibility_ms_compat)) {
113    CC1Args.push_back("-fvisibility");
114    CC1Args.push_back("hidden");
115    CC1Args.push_back("-fapply-global-visibility-to-externs");
116  }
117}
118