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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-11-26 16:15:25 +0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-12-04 04:28:15 +0800 |
| commit | 1c4cebb84b9e33aea9a90adfadb031d1f1eba927 (patch) | |
| tree | b8c59eb6388c942da858d8a1881e739c17493d73 /malloc/dynarray_resize.c | |
| parent | f43eb2cf30fdff39bda1c2018246d4badabbc576 (diff) | |
| download | glibc-1c4cebb84b9e33aea9a90adfadb031d1f1eba927.tar.xz glibc-1c4cebb84b9e33aea9a90adfadb031d1f1eba927.zip | |
malloc: Optimize small memory clearing for calloc
Add calloc-clear-memory.h to clear memory size up to 36 bytes (72 bytes
on 64-bit targets) for calloc. Use repeated stores with 1 branch, instead
of up to 3 branches. On x86-64, it is faster than memset since calling
memset needs 1 indirect branch, 1 broadcast, and up to 4 branches.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Diffstat (limited to 'malloc/dynarray_resize.c')
0 files changed, 0 insertions, 0 deletions