Files
carbon-lang/toolchain/check/check.h
T
Sam EstepandJon Ross-Perkins e0e305536e Collect timing data per unit for each phase (#4512)
This PR adds a `--dump-timings` flag to the `compile` subcommand
(similar to the existing `--dump-mem-usage` flag), which collects timing
data per compilation unit for each compilation phase. For example, on my
2020 M1 MacBook:

```
$ bazel build -c opt //toolchain
$ bazel-bin/toolchain/install/run_carbon compile --phase=lower --dump-timings examples/sieve.carbon | tail
...
---
filename:        'examples/sieve.carbon'
nanoseconds:
  lex:             30792
  parse:           25458
  check:           226625
  lower:           1136958
  Total:           1419833
...
```

Most of the changes are pretty straightforward. There were a couple I
wasn't sure about though; let me know if I should change:

- new `Timings` class in its own file, pretty similar to the existing
`MemUsage` class
- added a `timings_` field to the `CompilationUnit` class
- added a `timings` field to the `Check::Unit` struct
- renamed `CheckParseTree` function to `CheckParseTreeInner` for ease of
timing with early `return`

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
2024-11-12 20:47:08 +00:00

43 lines
1.5 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_CHECK_CHECK_H_
#define CARBON_TOOLCHAIN_CHECK_CHECK_H_
#include "common/ostream.h"
#include "toolchain/base/shared_value_stores.h"
#include "toolchain/base/timings.h"
#include "toolchain/check/sem_ir_diagnostic_converter.h"
#include "toolchain/diagnostics/diagnostic_emitter.h"
#include "toolchain/lex/tokenized_buffer.h"
#include "toolchain/parse/tree.h"
#include "toolchain/parse/tree_and_subtrees.h"
#include "toolchain/sem_ir/file.h"
namespace Carbon::Check {
// Checking information that's tracked per file.
struct Unit {
SharedValueStores* value_stores;
std::optional<Timings>* timings;
const Lex::TokenizedBuffer* tokens;
const Parse::Tree* parse_tree;
DiagnosticConsumer* consumer;
// Returns a lazily constructed TreeAndSubtrees.
std::function<const Parse::TreeAndSubtrees&()> get_parse_tree_and_subtrees;
// The generated IR. Unset on input, set on output.
std::optional<SemIR::File>* sem_ir;
};
// Checks a group of parse trees. This will use imports to decide the order of
// checking.
auto CheckParseTrees(
llvm::MutableArrayRef<Unit> units,
llvm::MutableArrayRef<Parse::NodeLocConverter> node_converters,
bool prelude_import, llvm::raw_ostream* vlog_stream) -> void;
} // namespace Carbon::Check
#endif // CARBON_TOOLCHAIN_CHECK_CHECK_H_