perf/cold-path-annotations - Branch - oxc-project/oxc

perf(allocator): add #[cold] annotations to error handling functions

#18181Merged

Comparing

perf/cold-path-annotations

(

0dd3702

) with

main

(

37482eb

)

Untouched: 42

Skipped: 3

Benchmarks

Skipped (3)

Passed

semantic[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/semantic.rs::semantic::bench_semantic

+1%

62.9 µs62.1 µs

mangler[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/minifier.rs::minifier::bench_mangler

+1%

13.1 µs12.9 µs

codegen[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/codegen.rs::codegen::bench_codegen

120.4 µs120 µs

formatter[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

439.1 µs437.7 µs

minifier[binder.ts]

tasks/benchmark/benches/minifier.rs::minifier::bench_minifier

4.1 ms4.1 ms

formatter[errors.ts]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

789.3 µs787 µs

semantic[cal.com.tsx]

tasks/benchmark/benches/semantic.rs::semantic::bench_semantic

21.3 ms21.2 ms

minifier[react.development.js]

tasks/benchmark/benches/minifier.rs::minifier::bench_minifier

2.6 ms2.6 ms

codegen[react.development.js]

tasks/benchmark/benches/codegen.rs::codegen::bench_codegen

1.9 ms1.9 ms

lexer[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/lexer.rs::lexer::bench_lexer

21 µs21 µs

transformer[react.development.js]

tasks/benchmark/benches/transformer.rs::transformer::bench_transformer

715.3 µs714.3 µs

parser[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/parser.rs::parser::bench_parser

81.1 µs81.1 µs

codegen[binder.ts]

tasks/benchmark/benches/codegen.rs::codegen::bench_codegen

4.3 ms4.3 ms

transformer[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/transformer.rs::transformer::bench_transformer

134.8 µs134.7 µs

semantic[react.development.js]

tasks/benchmark/benches/semantic.rs::semantic::bench_semantic

1.3 ms1.3 ms

linter[react.development.js]

tasks/benchmark/benches/linter.rs::linter::bench_linter

19.8 ms19.8 ms

linter[binder.ts]

tasks/benchmark/benches/linter.rs::linter::bench_linter

49.6 ms49.6 ms

lexer[react.development.js]

tasks/benchmark/benches/lexer.rs::lexer::bench_lexer

358.2 µs358.1 µs

semantic[binder.ts]

tasks/benchmark/benches/semantic.rs::semantic::bench_semantic

3.1 ms3.1 ms

isolated-declarations[vue-id.ts]

tasks/benchmark/benches/transformer.rs::transformer::bench_isolated_declarations

56.8 ms56.8 ms

codegen[cal.com.tsx]

tasks/benchmark/benches/codegen.rs::codegen::bench_codegen

33.8 ms33.8 ms

estree[checker.ts]

tasks/benchmark/benches/parser.rs::parser::bench_estree

105.1 ms105.1 ms

linter[cal.com.tsx]

tasks/benchmark/benches/linter.rs::linter::bench_linter

492.7 ms492.7 ms

parser[cal.com.tsx]

tasks/benchmark/benches/parser.rs::parser::bench_parser

25.3 ms25.3 ms

lexer[cal.com.tsx]

tasks/benchmark/benches/lexer.rs::lexer::bench_lexer

5.5 ms5.5 ms

parser[react.development.js]

tasks/benchmark/benches/parser.rs::parser::bench_parser

1.2 ms1.2 ms

lexer[binder.ts]

tasks/benchmark/benches/lexer.rs::lexer::bench_lexer

884.9 µs885 µs

parser[binder.ts]

tasks/benchmark/benches/parser.rs::parser::bench_parser

3.1 ms3.1 ms

mangler[cal.com.tsx]

tasks/benchmark/benches/minifier.rs::minifier::bench_mangler

2.9 ms2.9 ms

formatter[types.ts]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

14.7 ms14.7 ms

transformer[binder.ts]

tasks/benchmark/benches/transformer.rs::transformer::bench_transformer

1.7 ms1.7 ms

linter[RadixUIAdoptionSection.jsx]

tasks/benchmark/benches/linter.rs::linter::bench_linter

744.5 µs744.9 µs

mangler[react.development.js]

tasks/benchmark/benches/minifier.rs::minifier::bench_mangler

255.5 µs255.8 µs

formatter[App.tsx]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

48.8 ms48.8 ms

formatter[handle-comments.js]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

3.5 ms3.5 ms

formatter[Search.tsx]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

1.9 ms1.9 ms

formatter[index.tsx]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

4.6 ms4.6 ms

formatter[next.ts]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

2.8 ms2.8 ms

formatter[core.js]

tasks/benchmark/benches/formatter.rs::formatter::bench_formatter

2 ms2 ms

mangler[binder.ts]

tasks/benchmark/benches/minifier.rs::minifier::bench_mangler

709.9 µs712.9 µs

minifier[cal.com.tsx]

tasks/benchmark/benches/minifier.rs::minifier::bench_minifier

-1%

37.3 ms37.5 ms

transformer[cal.com.tsx]

tasks/benchmark/benches/transformer.rs::transformer::bench_transformer

-1%

26.1 ms26.3 ms

Commits

Click on a commit to change the comparison range

Base

main

37482eb

+0.03%

perf(allocator): add #[cold] annotations to error handling functions Mark error/panic functions as `#[cold]` to improve branch prediction and code layout for hot paths. Functions annotated: - `allocation_size_overflow` in bump.rs - `new_layout_err` in bumpalo_alloc.rs - `handle_alloc_error` in bumpalo_alloc.rs - `capacity_overflow` in raw_vec.rs The `#[cold]` attribute tells the compiler to: 1. Assume branches leading to these functions are unlikely 2. Move cold code away from hot paths (improves i-cache) 3. Avoid inlining cold functions into hot callers Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

0dd3702

2 hours ago

by Boshen

Home Terms Privacy Docs