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bors d97326eabf Auto merge of #136264 - GuillaumeGomez:optimize-integers-to-string, r=Amanieu 
Optimize `ToString` implementation for integers

Part of https://github.com/rust-lang/rust/issues/135543.

Follow-up of https://github.com/rust-lang/rust/pull/133247 and https://github.com/rust-lang/rust/pull/128204.

The benchmark results are:

| name| 1.87.0-nightly (3ea711f17 2025-03-09) | With this PR | diff |
|-|-|-|-|
| bench_i16 | 32.06 ns/iter (+/- 0.12) | 17.62 ns/iter (+/- 0.03) | -45% |
| bench_i32 | 31.61 ns/iter (+/- 0.04) | 15.10 ns/iter (+/- 0.06) | -52% |
| bench_i64 | 31.71 ns/iter (+/- 0.07) | 15.02 ns/iter (+/- 0.20) | -52% |
| bench_i8 | 13.21 ns/iter (+/- 0.14) | 14.93 ns/iter (+/- 0.16) | +13% |
| bench_u16 | 31.20 ns/iter (+/- 0.06) | 16.14 ns/iter (+/- 0.11) | -48% |
| bench_u32 | 33.27 ns/iter (+/- 0.05) | 16.18 ns/iter (+/- 0.10) | -51% |
| bench_u64 | 31.44 ns/iter (+/- 0.06) | 16.62 ns/iter (+/- 0.21) | -47% |
| bench_u8 | 10.57 ns/iter (+/- 0.30) | 13.00 ns/iter (+/- 0.43) | +22% |

More information about it in [the original comment](https://github.com/rust-lang/rust/pull/136264#discussion_r1987542954).

r? `@workingjubilee`
2025-05-15 20:20:30 +00:00
..
alloc Auto merge of #136264 - GuillaumeGomez:optimize-integers-to-string, r=Amanieu 2025-05-15 20:20:30 +00:00
alloctests update cfg(bootstrap) 2025-05-12 15:33:37 +02:00
backtrace@6c882eb119 Fix backtrace for cygwin 2025-05-07 13:08:19 +08:00
core Auto merge of #136264 - GuillaumeGomez:optimize-integers-to-string, r=Amanieu 2025-05-15 20:20:30 +00:00
coretests update cfg(bootstrap) 2025-05-12 15:33:37 +02:00
panic_abort Migrate panic_abort to Rust 2024 2025-03-11 09:46:34 -07:00
panic_unwind update cfgs 2025-04-09 12:29:59 +01:00
portable-simd Merge commit 'c14f2fc3eb' into sync-from-portable-simd-2025-03-19 2025-03-19 00:58:47 -04:00
proc_macro manual clippy fixes 2025-05-12 15:33:41 +02:00
profiler_builtins Fix profiler_builtins build script to handle full path to profiler lib 2025-04-11 16:57:38 +02:00
rtstartup Revert changes for rtstartup 2025-03-10 21:23:31 +08:00
rustc-std-workspace-alloc Migrated the rustc-std-workspace crates to Rust 2024 2025-03-11 09:46:35 -07:00
rustc-std-workspace-core Migrated the rustc-std-workspace crates to Rust 2024 2025-03-11 09:46:35 -07:00
rustc-std-workspace-std Migrated the rustc-std-workspace crates to Rust 2024 2025-03-11 09:46:35 -07:00
std bump compiler_builtins 2025-05-13 11:30:36 +02:00
stdarch@f1c1839c0d Update stdarch 2025-05-01 20:01:43 +05:30
sysroot Update stdarch 2025-05-01 20:01:43 +05:30
test Add new test_main_with_exit_callback public function in libtest to allow a callback to be called before exiting 2025-05-06 18:17:48 +02:00
unwind unwind: bump unwinding dependency to 0.2.6 2025-04-29 09:46:32 +08:00
windows_targets Fix backtrace for cygwin 2025-05-07 13:08:19 +08:00
Cargo.lock bump compiler_builtins 2025-05-13 11:30:36 +02:00
Cargo.toml Add opt-level = "s" for more std symbolication crates 2025-04-01 20:50:19 +00:00