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| author | LemonBoy <thatlemon@gmail.com> | 2020-09-13 21:12:21 +0200 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2020-09-13 16:32:21 -0400 |
| commit | 61e9e82bdc10110b74bdeb973cc542c7b73a4ae2 (patch) | |
| tree | f60c7e2f6b97395dee7602d90ce774f19e01e47e /lib/std/priority_queue.zig | |
| parent | 5e50d145d964238a68d4780e253d26431e7c7994 (diff) | |
| download | zig-61e9e82bdc10110b74bdeb973cc542c7b73a4ae2.tar.gz zig-61e9e82bdc10110b74bdeb973cc542c7b73a4ae2.zip | |
std: Make the CRC32 calculation slightly faster
Speed up a little the slicing-by-8 code path by replacing the
(load+shift+xor)*4 sequence with a single u32 load plus a xor.
Before:
```
iterative: 1018 MiB/s [000000006c3b110d]
small keys: 1075 MiB/s [0035bf3dcac00000]
```
After:
```
iterative: 1114 MiB/s [000000006c3b110d]
small keys: 1324 MiB/s [0035bf3dcac00000]
```
Diffstat (limited to 'lib/std/priority_queue.zig')
0 files changed, 0 insertions, 0 deletions