Justin Hibbits
89a0487c97
powerpc64: Rewrite strcmp in asm to take advantage of word size
...
Summary:
Optimize strcmp for powerpc64.
Data is loaded by double words and cmpb intruction is used to find '\0'.
Some performance gain rates between the current and the optimized solution:
String size (bytes) Gain rate
<=8 0.59%
<=16 1.92%
32 3.02%
64 5.60%
128 10.16%
256 18.05%
512 30.18%
1024 42.82%
Submitted by: alexandre.yamashita_eldorado.org.br,
leonardo.bianconi_eldorado.org.br
Differential Revision: https://reviews.freebsd.org/D15220
2019-04-23 02:53:53 +00:00
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