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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2021-09-06 10:21:07 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2021-09-06 10:23:25 +0100 |
| commit | f873adf3df443f8d302677f963adcc3c22187e68 (patch) | |
| tree | 2fb8efde8ba54c2d3d9dcf38db233997246e6d37 | |
| parent | 30891f35fa7da832b66d80d0807610df361851f3 (diff) | |
| download | glibc-f873adf3df443f8d302677f963adcc3c22187e68.tar.gz glibc-f873adf3df443f8d302677f963adcc3c22187e68.tar.xz glibc-f873adf3df443f8d302677f963adcc3c22187e68.zip | |
Revert "AArch64: Update A64FX memset not to degrade at 16KB"
Because of wrong commit author. Will recommit it with right author. This reverts commit 23777232c23f80809613bdfa329f63aadf992922.
| -rw-r--r-- | sysdeps/aarch64/multiarch/memset_a64fx.S | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/sysdeps/aarch64/multiarch/memset_a64fx.S b/sysdeps/aarch64/multiarch/memset_a64fx.S index f7dfdaace7..7bf759b6a7 100644 --- a/sysdeps/aarch64/multiarch/memset_a64fx.S +++ b/sysdeps/aarch64/multiarch/memset_a64fx.S @@ -96,14 +96,7 @@ L(vl_agnostic): // VL Agnostic L(unroll8): sub count, count, tmp1 .p2align 4 - // The 2 instructions at the beginning of the following loop, - // cmp and branch, are a workaround so as not to degrade at - // the peak performance 16KB. - // It is found heuristically and the branch condition, b.ne, - // is chosen intentionally never to jump. -1: cmp xzr, xzr - b.ne 1b - st1b_unroll 0, 7 +1: st1b_unroll 0, 7 add dst, dst, tmp1 subs count, count, tmp1 b.hi 1b |