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aa69a484eb
Adds a flag `--optimize=<mode>` that specifies what to optimize for: * `--optimize=none` turns off the optimizer as much as possible, but still respects always_inline. * `--optimize=debug` aims to be the equivalent of `-Og` / `-O1`, and provides optimizations that don't affect the ability to debug the program. This is the default. * `--optimize=size` optimizes for the size of the produced program, and aims to be the equivalent of `-Oz`. * `--optimize=speed` optimizes for the execution time of the produced program, and aims to be the equivalent of `-O3`. Following the approach taken by Clang, the optimization level feeds into both the configuration of the LLVM pass pipeline and the attributes added to function definitions generated by the frontend. Optimization is performed in a new phase, `optimize`, which runs between `lower` and `codegen`. --------- Co-authored-by: Dana Jansens <danakj@orodu.net> Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
96 lines
2.7 KiB
C++
96 lines
2.7 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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#ifndef CARBON_TOOLCHAIN_DRIVER_COMPILE_SUBCOMMAND_H_
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#define CARBON_TOOLCHAIN_DRIVER_COMPILE_SUBCOMMAND_H_
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#include "common/command_line.h"
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#include "common/error.h"
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#include "common/ostream.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "toolchain/check/check.h"
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#include "toolchain/driver/codegen_options.h"
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#include "toolchain/driver/driver_env.h"
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#include "toolchain/driver/driver_subcommand.h"
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#include "toolchain/lower/options.h"
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namespace Carbon {
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// Options for the compile subcommand.
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//
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// See the implementation of `Build` for documentation on members.
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struct CompileOptions {
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enum class Phase : int8_t {
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Lex,
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Parse,
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Check,
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Lower,
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Optimize,
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CodeGen,
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};
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friend auto operator<<(llvm::raw_ostream& out, Phase phase)
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-> llvm::raw_ostream&;
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auto Build(CommandLine::CommandBuilder& b) -> void;
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Lower::OptimizationLevel opt_level = Lower::OptimizationLevel::Debug;
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CodegenOptions codegen_options;
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Phase phase;
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Check::CheckParseTreesOptions::DumpSemIRRanges dump_sem_ir_ranges;
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llvm::StringRef output_filename;
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llvm::SmallVector<llvm::StringRef> input_filenames;
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llvm::SmallVector<llvm::StringRef> clang_args;
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bool asm_output = false;
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bool force_obj_output = false;
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bool custom_core = false;
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bool dump_shared_values = false;
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bool dump_tokens = false;
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bool omit_file_boundary_tokens = false;
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bool dump_parse_tree = false;
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bool dump_raw_sem_ir = false;
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bool dump_sem_ir = false;
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bool dump_cpp_ast = false;
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bool dump_llvm_ir = false;
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bool dump_asm = false;
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bool dump_mem_usage = false;
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bool dump_timings = false;
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bool stream_errors = false;
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bool preorder_parse_tree = false;
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bool builtin_sem_ir = false;
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bool prelude_import = false;
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bool include_debug_info = true;
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bool run_llvm_verifier = true;
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llvm::SmallVector<llvm::StringRef> exclude_dump_file_prefixes;
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};
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// Implements the compile subcommand of the driver.
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class CompileSubcommand : public DriverSubcommand {
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public:
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explicit CompileSubcommand();
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auto BuildOptions(CommandLine::CommandBuilder& b) -> void override {
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options_.Build(b);
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}
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auto Run(DriverEnv& driver_env) -> DriverResult override;
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private:
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// Does custom validation of the compile-subcommand options structure beyond
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// what the command line parsing library supports. Diagnoses and returns false
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// on failure.
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auto ValidateOptions(Diagnostics::NoLocEmitter& emitter) const -> bool;
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CompileOptions options_;
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};
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} // namespace Carbon
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#endif // CARBON_TOOLCHAIN_DRIVER_COMPILE_SUBCOMMAND_H_
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