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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::AddFortranDialectOptions(const ArgList &Args,
ArgStringList &CmdArgs) const {
Args.AddAllArgs(
CmdArgs, {options::OPT_ffixed_form, options::OPT_ffree_form,
options::OPT_ffixed_line_length_EQ, options::OPT_fopenmp,
options::OPT_fopenacc, options::OPT_finput_charset_EQ,
options::OPT_fimplicit_none, options::OPT_fno_implicit_none,
options::OPT_fbackslash, options::OPT_fno_backslash,
options::OPT_flogical_abbreviations,
options::OPT_fno_logical_abbreviations,
options::OPT_fxor_operator, options::OPT_fno_xor_operator,
options::OPT_falternative_parameter_statement,
options::OPT_fdefault_real_8, options::OPT_fdefault_integer_8,
options::OPT_fdefault_double_8, options::OPT_flarge_sizes,
options::OPT_fno_automatic});
}
void Flang::AddPreprocessingOptions(const ArgList &Args,
ArgStringList &CmdArgs) const {
Args.AddAllArgs(CmdArgs,
{options::OPT_P, options::OPT_D, options::OPT_U,
options::OPT_I, options::OPT_cpp, options::OPT_nocpp});
}
void Flang::AddOtherOptions(const ArgList &Args, ArgStringList &CmdArgs) const {
Args.AddAllArgs(CmdArgs,
{options::OPT_module_dir, options::OPT_fdebug_module_writer,
options::OPT_fintrinsic_modules_path, options::OPT_pedantic,
options::OPT_std_EQ, options::OPT_W_Joined});
}
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();
// TODO: Once code-generation is available, this will need to be commented
// out.
// const llvm::Triple &Triple = TC.getEffectiveTriple();
// const std::string &TripleStr = Triple.getTriple();
ArgStringList CmdArgs;
// Invoke ourselves in -fc1 mode.
CmdArgs.push_back("-fc1");
// TODO: Once code-generation is available, this will need to be commented
// out.
// Add the "effective" target triple.
// 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.");
}
const InputInfo &Input = Inputs[0];
types::ID InputType = Input.getType();
// Add preprocessing options like -I, -D, etc. if we are using the
// preprocessor (i.e. skip when dealing with e.g. binary files).
if (types::getPreprocessedType(InputType) != types::TY_INVALID)
AddPreprocessingOptions(Args, CmdArgs);
AddFortranDialectOptions(Args, CmdArgs);
// Add other compile options
AddOtherOptions(Args, CmdArgs);
// Forward -Xflang arguments to -fc1
Args.AddAllArgValues(CmdArgs, options::OPT_Xflang);
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
assert(Input.isFilename() && "Invalid input.");
CmdArgs.push_back(Input.getFilename());
const auto& D = C.getDriver();
// TODO: Replace flang-new with flang once the new driver replaces the
// throwaway driver
const char *Exec = Args.MakeArgString(D.GetProgramPath("flang-new", TC));
C.addCommand(std::make_unique<Command>(JA, *this,
ResponseFileSupport::AtFileUTF8(),
Exec, CmdArgs, Inputs, Output));
}
Flang::Flang(const ToolChain &TC) : Tool("flang-new", "flang frontend", TC) {}
Flang::~Flang() {}
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