mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 22:02:52 +01:00
Dana Jansens
64139e5d65
This takes the debug runtime of `toolchain/check/testdata/interop/cpp/function/arithmetic_types_bridged.carbon` from 4.7s down to about 4s (so 15% faster overall). There's still lots of room to improve this test which seems to be hitting lots of pathological behaviour, but InstNamer is 30% of the runtime, with fingerprinting's `InstFingerprinter::GetOrCompute` consuming 10% of cycles. We reduce its impact by using a vector of vectors instead of a Map for the cache of fingerprints. After this change InstNamer drops below 24% of the runtime. Also move the instruction name when giving it to `AllocateName` since it receives std::string by value, though this doesn't show up in the profile for the test.
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
#ifndef CARBON_TOOLCHAIN_LOWER_LOWER_H_
|
|
#define CARBON_TOOLCHAIN_LOWER_LOWER_H_
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "toolchain/parse/tree_and_subtrees.h"
|
|
#include "toolchain/sem_ir/file.h"
|
|
#include "toolchain/sem_ir/inst_namer.h"
|
|
|
|
namespace Carbon::Lower {
|
|
|
|
struct LowerToLLVMOptions {
|
|
// Options must be set individually, not through initialization.
|
|
explicit LowerToLLVMOptions() = default;
|
|
|
|
// If set, enables LLVM IR verification.
|
|
llvm::raw_ostream* llvm_verifier_stream = nullptr;
|
|
|
|
// Whether to include debug info in lowered output.
|
|
bool want_debug_info = false;
|
|
|
|
// If set, enables verbose output.
|
|
llvm::raw_ostream* vlog_stream = nullptr;
|
|
|
|
// If set, LLVM IR will be dumped to this in textual form.
|
|
llvm::raw_ostream* dump_stream = nullptr;
|
|
};
|
|
|
|
// Lowers SemIR to LLVM IR.
|
|
auto LowerToLLVM(
|
|
llvm::LLVMContext& llvm_context,
|
|
llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs,
|
|
const Parse::GetTreeAndSubtreesStore& tree_and_subtrees_getters,
|
|
const SemIR::File& sem_ir, int total_ir_count,
|
|
const LowerToLLVMOptions& options) -> std::unique_ptr<llvm::Module>;
|
|
|
|
} // namespace Carbon::Lower
|
|
|
|
#endif // CARBON_TOOLCHAIN_LOWER_LOWER_H_
|