Flang.cpp
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//===-- Flang.cpp - Flang+LLVM 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 "Flang.h"
#include "CommonArgs.h"
#include "clang/Driver/Options.h"
#include <cassert>
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang;
using namespace llvm::opt;
void Flang::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const ArgList &Args, const char *LinkingOutput) const {
const auto &TC = getToolChain();
const llvm::Triple &Triple = TC.getEffectiveTriple();
const std::string &TripleStr = Triple.getTriple();
ArgStringList CmdArgs;
CmdArgs.push_back("-fc1");
CmdArgs.push_back("-triple");
CmdArgs.push_back(Args.MakeArgString(TripleStr));
if (isa<PreprocessJobAction>(JA)) {
CmdArgs.push_back("-E");
} else if (isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) {
if (JA.getType() == types::TY_Nothing) {
CmdArgs.push_back("-fsyntax-only");
} else if (JA.getType() == types::TY_AST) {
CmdArgs.push_back("-emit-ast");
} else if (JA.getType() == types::TY_LLVM_IR ||
JA.getType() == types::TY_LTO_IR) {
CmdArgs.push_back("-emit-llvm");
} else if (JA.getType() == types::TY_LLVM_BC ||
JA.getType() == types::TY_LTO_BC) {
CmdArgs.push_back("-emit-llvm-bc");
} else if (JA.getType() == types::TY_PP_Asm) {
CmdArgs.push_back("-S");
} else {
assert(false && "Unexpected output type!");
}
} else if (isa<AssembleJobAction>(JA)) {
CmdArgs.push_back("-emit-obj");
} else {
assert(false && "Unexpected action class for Flang tool.");
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
const InputInfo &Input = Inputs[0];
assert(Input.isFilename() && "Invalid input.");
CmdArgs.push_back(Input.getFilename());
const auto& D = C.getDriver();
const char* Exec = Args.MakeArgString(D.GetProgramPath("flang", TC));
C.addCommand(std::make_unique<Command>(
JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
}
Flang::Flang(const ToolChain &TC) : Tool("flang", "flang frontend", TC) {}
Flang::~Flang() {}