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b573e10d21
Optimized vec::IntoIter::next_chunk impl ``` x86_64v1, default test vec::bench_next_chunk ... bench: 696 ns/iter (+/- 22) x86_64v1, pr test vec::bench_next_chunk ... bench: 309 ns/iter (+/- 4) znver2, default test vec::bench_next_chunk ... bench: 17,272 ns/iter (+/- 117) znver2, pr test vec::bench_next_chunk ... bench: 211 ns/iter (+/- 3) ``` On znver2 the default impl seems to be slow due to different inlining decisions. It goes through `core::array::iter_next_chunk` which has a deep call tree. |
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alloc | ||
backtrace@4e5a3f7292 | ||
core | ||
panic_abort | ||
panic_unwind | ||
portable-simd | ||
proc_macro | ||
profiler_builtins | ||
rtstartup | ||
rustc-std-workspace-alloc | ||
rustc-std-workspace-core | ||
rustc-std-workspace-std | ||
std | ||
stdarch@28335054b1 | ||
test | ||
unwind |