mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 11:40:10 +01:00
Jon Ross-PerkinsandChandler Carruth
59619fa8eb
I'm not sure the target in use here will reliably crash over time, but it does right now, and that seems reasonable...? Example crash: ``` file_test: external/+llvm_project+llvm-project/clang/lib/Driver/ToolChains/Darwin.h:505: bool clang::driver::toolchains::Darwin::isTargetWatchOSBased() const: Assertion `TargetInitialized && "Target not initialized!"' failed. ``` Stack fragment: ``` ... #10 0x0000562ba07dec33 isTargetWatchOSBased /proc/self/cwd/external/+llvm_project+llvm-project/clang/lib/Driver/ToolChains/Darwin.h:505:5 #11 0x0000562ba07dec33 clang::driver::toolchains::DarwinClang::addClangWarningOptions(llvm::SmallVector<char const*, 16u>&) const /proc/self/cwd/external/+llvm_project+llvm-project/clang/lib/Driver/ToolChains/Darwin.cpp:1188:7 #12 0x0000562ba072afc7 clang::driver::tools::Clang::ConstructJob(clang::driver::Compilation&, clang::driver::JobAction const&, clang::driver::InputInfo const&, llvm::SmallVector<clang::driver::InputInfo, 4u> const&, llvm::opt::ArgList const&, char const*) const /proc/self/cwd/external/+llvm_project+llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:0:6 #13 0x0000562ba06306d8 clang::driver::Driver::BuildJobsForActionNoCache(clang::driver::Compilation&, clang::driver::Action const*, clang::driver::ToolChain const*, llvm::StringRef, bool, bool, char const*, std::__1::map<std::__1::pair<clang::driver::Action const*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>, llvm::SmallVector<clang::driver::InputInfo, 4u>, std::__1::less<std::__1::pair<clang::driver::Action const*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>>, std::__1::allocator<std::__1::pair<std::__1::pair<clang::driver::Action const*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>> const, llvm::SmallVector<clang::driver::InputInfo, 4u>>>>&, clang::driver::Action::OffloadKind) const /proc/self/cwd/external/+llvm_project+llvm-project/clang/lib/Driver/Driver.cpp:6083:10 ... #28 0x0000562b9e479d1f Carbon::BuildClangInvocation(Carbon::Diagnostics::Consumer&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, llvm::ArrayRef<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>) /proc/self/cwd/toolchain/base/clang_invocation.cpp:103:21 ... ``` --------- Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
66 lines
2.1 KiB
C++
66 lines
2.1 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 <optional>
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#include <string>
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#include "common/check.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/MC/TargetRegistry.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::Make(llvm::Module* module, llvm::StringRef target_triple_str,
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llvm::raw_pwrite_stream* errors) -> std::optional<CodeGen> {
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std::string error;
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const llvm::Target* target =
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llvm::TargetRegistry::lookupTarget(target_triple_str, error);
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CARBON_CHECK(target, "Target should be validated before codegen");
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llvm::Triple target_triple(target_triple_str);
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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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CodeGen codegen(module, errors);
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codegen.target_machine_.reset(target->createTargetMachine(
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target_triple, CPU, Features, target_opts, llvm::Reloc::PIC_));
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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::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::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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