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de42550d0a
Get piece unchecked in `write` We already use specialized `zip`, but it seems like we can do a little better by not checking `pieces` length at all. `Arguments` constructors are now unsafe. So the `format_args!` expansion now includes an `unsafe` block. <details> <summary>Local Bench Diff</summary> ```text name before ns/iter after ns/iter diff ns/iter diff % speedup fmt::write_str_macro1 22,967 19,718 -3,249 -14.15% x 1.16 fmt::write_str_macro2 35,527 32,654 -2,873 -8.09% x 1.09 fmt::write_str_macro_debug 571,953 575,973 4,020 0.70% x 0.99 fmt::write_str_ref 9,579 9,459 -120 -1.25% x 1.01 fmt::write_str_value 9,573 9,572 -1 -0.01% x 1.00 fmt::write_u128_max 176 173 -3 -1.70% x 1.02 fmt::write_u128_min 138 134 -4 -2.90% x 1.03 fmt::write_u64_max 139 136 -3 -2.16% x 1.02 fmt::write_u64_min 129 135 6 4.65% x 0.96 fmt::write_vec_macro1 24,401 22,273 -2,128 -8.72% x 1.10 fmt::write_vec_macro2 37,096 35,602 -1,494 -4.03% x 1.04 fmt::write_vec_macro_debug 588,291 589,575 1,284 0.22% x 1.00 fmt::write_vec_ref 9,568 9,732 164 1.71% x 0.98 fmt::write_vec_value 9,516 9,625 109 1.15% x 0.99 ``` </details> |
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| .. | ||
| alloc | ||
| backtrace@4f925f8d81 | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@c158cfd38e | ||
| test | ||
| unwind | ||