1 //===-- Flang.cpp - Flang+LLVM 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
10 #include "Flang.h"
11 #include "CommonArgs.h"
12
13 #include "clang/Driver/Options.h"
14
15 #include <cassert>
16
17 using namespace clang::driver;
18 using namespace clang::driver::tools;
19 using namespace clang;
20 using namespace llvm::opt;
21
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const22 void Flang::ConstructJob(Compilation &C, const JobAction &JA,
23 const InputInfo &Output, const InputInfoList &Inputs,
24 const ArgList &Args, const char *LinkingOutput) const {
25 const auto &TC = getToolChain();
26 const llvm::Triple &Triple = TC.getEffectiveTriple();
27 const std::string &TripleStr = Triple.getTriple();
28
29 ArgStringList CmdArgs;
30
31 CmdArgs.push_back("-fc1");
32
33 // TODO: Eventually all actions will require a triple (e.g. `-triple
34 // aarch64-unknown-linux-gnu`). However, `-triple` is currently not supported
35 // by `flang-new -fc1`, so we only add it selectively to actions that we
36 // don't support/execute just yet.
37 if (isa<PreprocessJobAction>(JA)) {
38 if (C.getArgs().hasArg(options::OPT_test_io))
39 CmdArgs.push_back("-test-io");
40 else
41 CmdArgs.push_back("-E");
42 } else if (isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) {
43 CmdArgs.push_back("-triple");
44 CmdArgs.push_back(Args.MakeArgString(TripleStr));
45 if (JA.getType() == types::TY_Nothing) {
46 CmdArgs.push_back("-fsyntax-only");
47 } else if (JA.getType() == types::TY_AST) {
48 CmdArgs.push_back("-emit-ast");
49 } else if (JA.getType() == types::TY_LLVM_IR ||
50 JA.getType() == types::TY_LTO_IR) {
51 CmdArgs.push_back("-emit-llvm");
52 } else if (JA.getType() == types::TY_LLVM_BC ||
53 JA.getType() == types::TY_LTO_BC) {
54 CmdArgs.push_back("-emit-llvm-bc");
55 } else if (JA.getType() == types::TY_PP_Asm) {
56 CmdArgs.push_back("-S");
57 } else {
58 assert(false && "Unexpected output type!");
59 }
60 } else if (isa<AssembleJobAction>(JA)) {
61 CmdArgs.push_back("-triple");
62 CmdArgs.push_back(Args.MakeArgString(TripleStr));
63 CmdArgs.push_back("-emit-obj");
64 } else {
65 assert(false && "Unexpected action class for Flang tool.");
66 }
67
68 if (Output.isFilename()) {
69 CmdArgs.push_back("-o");
70 CmdArgs.push_back(Output.getFilename());
71 } else {
72 assert(Output.isNothing() && "Invalid output.");
73 }
74
75 const InputInfo &Input = Inputs[0];
76 assert(Input.isFilename() && "Invalid input.");
77 CmdArgs.push_back(Input.getFilename());
78
79 const auto& D = C.getDriver();
80 // TODO: Replace flang-new with flang once the new driver replaces the
81 // throwaway driver
82 const char *Exec = Args.MakeArgString(D.GetProgramPath("flang-new", TC));
83 C.addCommand(std::make_unique<Command>(JA, *this,
84 ResponseFileSupport::AtFileUTF8(),
85 Exec, CmdArgs, Inputs, Output));
86 }
87
Flang(const ToolChain & TC)88 Flang::Flang(const ToolChain &TC) : Tool("flang-new", "flang frontend", TC) {}
89
~Flang()90 Flang::~Flang() {}
91