Nick Terrell 10bfd0c0d5 Fix ZSTD_execSequence() performance regression ... Commit ae1cb3b3d0 caused the regression. It is an instruction alignment issue, because if it is `U64 i` instead of `U32 i`, the regression returns. This patch fixes the regression in gcc, but only gets some of the clang performance back. Benchmarks: Run on `silesia.tar`. I only show levels 1-5 because the performance regression was uniform across all levels. I did one run on levels 1-19 and it looked good. | Build | Level | Before | While | After | |-------|-------|-------:|------:|------:| | gcc | 1 | 931.4 | 904.4 | 932.8 | | gcc | 2 | 849.1 | 822.6 | 851.2 | | gcc | 3 | 815.6 | 790.6 | 818.9 | | gcc | 4 | 794.1 | 770.7 | 798.0 | | gcc | 5 | 785.7 | 760.7 | 788.8 | | clang | 1 | 705.5 | 683.2 | 693.8 | | clang | 2 | 670.0 | 649.2 | 660.7 | | clang | 3 | 659.6 | 639.8 | 651.4 | | clang | 4 | 652.5 | 634.7 | 645.9 | | clang | 5 | 646.9 | 625.5 | 637.7 |		2016-10-27 16:19:57 -07:00
..
huf_decompress.c	fixing FORCE_INLINE for older compilers (#330)	2016-09-02 11:44:21 -07:00
zbuff_decompress.c	merge	2016-08-30 12:03:36 -07:00
zstd_decompress.c	Fix ZSTD_execSequence() performance regression	2016-10-27 16:19:57 -07:00