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update decoder hot loop alignment

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This seems to bring an additional ~+1.2% decompression speed
on average across 10 compilers x 6 scenarios.
This commit is contained in:
Yann Collet 2021-05-07 15:18:16 -07:00
parent 4d9caa4928
commit 6755baf940
1 changed files with 2 additions and 0 deletions
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2
lib/decompress/zstd_decompress_block.c
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@ -1161,6 +1161,8 @@ ZSTD_decompressSequences_body( ZSTD_DCtx* dctx,
* *
* https://gist.github.com/terrelln/9889fc06a423fd5ca6e99351564473f4 * https://gist.github.com/terrelln/9889fc06a423fd5ca6e99351564473f4
*/ */
__asm__(".p2align 6");
__asm__("nop");
__asm__(".p2align 5"); __asm__(".p2align 5");
__asm__("nop"); __asm__("nop");
__asm__(".p2align 4"); __asm__(".p2align 4");