mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 17:40:14 +01:00
Jon Ross-Perkins
b9df8ca765
A lot of this is more boring "remove unused header", plus some other minor cleanups. I think the most significant changes were: - yaml_test_helpers.cpp is doing a switch on an unsigned int, comparing to enum values. - [bugprone-switch-missing-default-case](https://clang.llvm.org/extra/clang-tidy/checks/bugprone/switch-missing-default-case.html) is unhappy with EnumBase, but correctly identified yaml_test_helpers.cpp, so I'm opting to address it rather than disabling it even though it needs NOLINT in several locations as a result, in addition to what I think are some low-value `default` cases. I'd be fine going the other way with this too and disabling it globally (I could see it being noisier in the explorer). - MarkInitializerFor swaps the argument names between the .h and .cpp. I think the .cpp had the order as intended. - There's a new-ish [performance-enum-size](https://clang.llvm.org/extra/clang-tidy/checks/performance/enum-size.html) which I'm basically treating as "add int8_t to enums". My main motivation here is to just clean up as many of these as I can so that I stop seeing them in vscode.
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/codegen/codegen.h"
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#include <memory>
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/TargetParser/Host.h"
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namespace Carbon {
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auto CodeGen::Create(llvm::Module& module, llvm::StringRef target_triple,
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llvm::raw_pwrite_stream& errors)
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-> std::optional<CodeGen> {
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// Initialize the target registry etc.
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llvm::InitializeAllTargetInfos();
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llvm::InitializeAllTargets();
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llvm::InitializeAllTargetMCs();
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llvm::InitializeAllAsmParsers();
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llvm::InitializeAllAsmPrinters();
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std::string error;
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const llvm::Target* target =
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llvm::TargetRegistry::lookupTarget(target_triple, error);
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if (!target) {
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errors << "ERROR: Invalid target: " << error << "\n";
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return {};
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}
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module.setTargetTriple(target_triple);
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constexpr llvm::StringLiteral CPU = "generic";
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constexpr llvm::StringLiteral Features = "";
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llvm::TargetOptions target_opts;
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std::optional<llvm::Reloc::Model> reloc_model;
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CodeGen codegen(module, errors);
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codegen.target_machine_.reset(target->createTargetMachine(
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target_triple, CPU, Features, target_opts, reloc_model));
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return codegen;
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}
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auto CodeGen::EmitAssembly(llvm::raw_pwrite_stream& out) -> bool {
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return EmitCode(out, llvm::CodeGenFileType::CGFT_AssemblyFile);
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}
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auto CodeGen::EmitObject(llvm::raw_pwrite_stream& out) -> bool {
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return EmitCode(out, llvm::CodeGenFileType::CGFT_ObjectFile);
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}
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auto CodeGen::EmitCode(llvm::raw_pwrite_stream& out,
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llvm::CodeGenFileType file_type) -> bool {
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module_.setDataLayout(target_machine_->createDataLayout());
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// Using the legacy PM to generate the assembly since the new PM
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// does not work with this yet.
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// TODO: make the new PM work with the codegen pipeline.
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llvm::legacy::PassManager pass;
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// Note that this returns true on an error.
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if (target_machine_->addPassesToEmitFile(pass, out, nullptr, file_type)) {
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errors_ << "ERROR: Unable to emit to this file.\n";
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return false;
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}
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pass.run(module_);
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return true;
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}
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} // namespace Carbon
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