96d229c9ab
This patch adds the following compiler frontend driver options: * -fdebug-unparse (f18 spelling: -funparse) * -fdebug-unparse-with-symbols (f18 spelling: -funparse-with-symbols) The new driver will only accept the new spelling. `f18` will accept both the original and the new spelling. A new base class for frontend actions is added: `PrescanAndSemaAction`. This is added to reduce code duplication that otherwise these new options would lead to. Implementation from * `ParseSyntaxOnlyAction::ExecutionAction` is moved to: * `PrescanAndSemaAction::BeginSourceFileAction` This implementation is now shared between: * PrescanAndSemaAction * ParseSyntaxOnlyAction * DebugUnparseAction * DebugUnparseWithSymbolsAction All tests that don't require other yet unimplemented options are updated. This way `flang-new -fc1` is used instead of `f18` when `FLANG_BUILD_NEW_DRIVER` is set to `On`. In order to facilitate this, `%flang_fc1` is added in the LIT configuration (lit.cfg.py). `asFortran` from f18.cpp is duplicated as `getBasicAsFortran` in FrontendOptions.cpp. At this stage it's hard to find a good place to share this method. I suggest that we revisit this once a switch from `f18` to `flang-new` is complete. Differential Revision: https://reviews.llvm.org/D96483
94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
//===--- ExecuteCompilerInvocation.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file holds ExecuteCompilerInvocation(). It is split into its own file to
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// minimize the impact of pulling in essentially everything else in Flang.
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//
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//===----------------------------------------------------------------------===//
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#include "flang/Frontend/CompilerInstance.h"
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#include "flang/Frontend/FrontendActions.h"
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#include "clang/Driver/Options.h"
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#include "llvm/Option/OptTable.h"
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#include "llvm/Option/Option.h"
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#include "llvm/Support/BuryPointer.h"
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#include "llvm/Support/CommandLine.h"
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namespace Fortran::frontend {
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static std::unique_ptr<FrontendAction> CreateFrontendBaseAction(
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CompilerInstance &ci) {
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ActionKind ak = ci.frontendOpts().programAction_;
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switch (ak) {
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case InputOutputTest:
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return std::make_unique<InputOutputTestAction>();
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break;
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case PrintPreprocessedInput:
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return std::make_unique<PrintPreprocessedAction>();
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break;
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case ParseSyntaxOnly:
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return std::make_unique<ParseSyntaxOnlyAction>();
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case EmitObj:
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return std::make_unique<EmitObjAction>();
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break;
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case DebugUnparse:
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return std::make_unique<DebugUnparseAction>();
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break;
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case DebugUnparseWithSymbols:
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return std::make_unique<DebugUnparseWithSymbolsAction>();
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break;
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default:
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break;
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// TODO:
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// case RunPreprocessor:
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// case ParserSyntaxOnly:
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// case EmitLLVM:
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// case EmitLLVMOnly:
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// case EmitCodeGenOnly:
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// (...)
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}
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return 0;
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}
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std::unique_ptr<FrontendAction> CreateFrontendAction(CompilerInstance &ci) {
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// Create the underlying action.
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std::unique_ptr<FrontendAction> act = CreateFrontendBaseAction(ci);
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if (!act)
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return nullptr;
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return act;
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}
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bool ExecuteCompilerInvocation(CompilerInstance *flang) {
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// Honor -help.
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if (flang->frontendOpts().showHelp_) {
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clang::driver::getDriverOptTable().PrintHelp(llvm::outs(),
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"flang-new -fc1 [options] file...", "LLVM 'Flang' Compiler",
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/*Include=*/clang::driver::options::FC1Option,
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/*Exclude=*/llvm::opt::DriverFlag::HelpHidden,
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/*ShowAllAliases=*/false);
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return true;
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}
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// Honor -version.
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if (flang->frontendOpts().showVersion_) {
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llvm::cl::PrintVersionMessage();
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return true;
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}
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// Create and execute the frontend action.
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std::unique_ptr<FrontendAction> act(CreateFrontendAction(*flang));
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if (!act)
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return false;
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bool success = flang->ExecuteAction(*act);
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return success;
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}
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} // namespace Fortran::frontend
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