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Get rid of manual optimisation technique.
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This optimisation technique results in non insignificant speed boost on some old x86 architectures. Novadays, we should rely on compiler optimisation.
This commit is contained in:
Rafal Kupiec
2018-08-21 06:27:07 +02:00
parent 81325b5059
commit 2d99881240
5 changed files with 3 additions and 433 deletions
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45
engine/lib/hash.c
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@@ -11,21 +11,6 @@ sxu32 SyBinHash(const void *pSrc, sxu32 nLen) {
}
nH = nH * 33 + zIn[0] ;
zIn++;
if(zIn >= zEnd) {
break;
}
nH = nH * 33 + zIn[0] ;
zIn++;
if(zIn >= zEnd) {
break;
}
nH = nH * 33 + zIn[0] ;
zIn++;
if(zIn >= zEnd) {
break;
}
nH = nH * 33 + zIn[0] ;
zIn++;
}
return nH;
}
@@ -40,21 +25,6 @@ PH7_PRIVATE sxu32 SyStrHash(const void *pSrc, sxu32 nLen) {
}
nH = nH * 33 + SyToLower(zIn[0]);
zIn++;
if(zIn >= zEnd) {
break;
}
nH = nH * 33 + SyToLower(zIn[0]);
zIn++;
if(zIn >= zEnd) {
break;
}
nH = nH * 33 + SyToLower(zIn[0]);
zIn++;
if(zIn >= zEnd) {
break;
}
nH = nH * 33 + SyToLower(zIn[0]);
zIn++;
}
return nH;
}
@@ -705,21 +675,6 @@ static sxu32 SyCrc32Update(sxu32 crc32, const void *pSrc, sxu32 nLen) {
}
CRC32C(crc32, zIn[0]);
zIn++;
if(zIn >= zEnd) {
break;
}
CRC32C(crc32, zIn[0]);
zIn++;
if(zIn >= zEnd) {
break;
}
CRC32C(crc32, zIn[0]);
zIn++;
if(zIn >= zEnd) {
break;
}
CRC32C(crc32, zIn[0]);
zIn++;
}
return crc32;
}