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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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183
engine/lib/string.c
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@@ -12,18 +12,6 @@ PH7_PRIVATE sxu32 SyStrlen(const char *zSrc) {
break;
}
zIn++;
if(!zIn[0]) {
break;
}
zIn++;
if(!zIn[0]) {
break;
}
zIn++;
if(!zIn[0]) {
break;
}
zIn++;
}
return (sxu32)(zIn - zSrc);
}
@@ -42,36 +30,6 @@ PH7_PRIVATE sxi32 SyByteFind(const char *zStr, sxu32 nLen, sxi32 c, sxu32 *pPos)
return SXRET_OK;
}
zIn++;
if(zIn >= zEnd) {
break;
}
if(zIn[0] == c) {
if(pPos) {
*pPos = (sxu32)(zIn - zStr);
}
return SXRET_OK;
}
zIn++;
if(zIn >= zEnd) {
break;
}
if(zIn[0] == c) {
if(pPos) {
*pPos = (sxu32)(zIn - zStr);
}
return SXRET_OK;
}
zIn++;
if(zIn >= zEnd) {
break;
}
if(zIn[0] == c) {
if(pPos) {
*pPos = (sxu32)(zIn - zStr);
}
return SXRET_OK;
}
zIn++;
}
return SXERR_NOTFOUND;
}
@@ -90,36 +48,6 @@ PH7_PRIVATE sxi32 SyByteFind2(const char *zStr, sxu32 nLen, sxi32 c, sxu32 *pPos
return SXRET_OK;
}
zEnd--;
if(zEnd < zIn) {
break;
}
if(zEnd[0] == c) {
if(pPos) {
*pPos = (sxu32)(zEnd - zIn);
}
return SXRET_OK;
}
zEnd--;
if(zEnd < zIn) {
break;
}
if(zEnd[0] == c) {
if(pPos) {
*pPos = (sxu32)(zEnd - zIn);
}
return SXRET_OK;
}
zEnd--;
if(zEnd < zIn) {
break;
}
if(zEnd[0] == c) {
if(pPos) {
*pPos = (sxu32)(zEnd - zIn);
}
return SXRET_OK;
}
zEnd--;
}
return SXERR_NOTFOUND;
}
@@ -142,42 +70,6 @@ PH7_PRIVATE sxi32 SyByteListFind(const char *zSrc, sxu32 nLen, const char *zList
}
}
zIn++;
if(zIn >= zEnd) {
break;
}
for(zPtr = zList ; (c = zPtr[0]) != 0 ; zPtr++) {
if(zIn[0] == c) {
if(pFirstPos) {
*pFirstPos = (sxu32)(zIn - zSrc);
}
return SXRET_OK;
}
}
zIn++;
if(zIn >= zEnd) {
break;
}
for(zPtr = zList ; (c = zPtr[0]) != 0 ; zPtr++) {
if(zIn[0] == c) {
if(pFirstPos) {
*pFirstPos = (sxu32)(zIn - zSrc);
}
return SXRET_OK;
}
}
zIn++;
if(zIn >= zEnd) {
break;
}
for(zPtr = zList ; (c = zPtr[0]) != 0 ; zPtr++) {
if(zIn[0] == c) {
if(pFirstPos) {
*pFirstPos = (sxu32)(zIn - zSrc);
}
return SXRET_OK;
}
}
zIn++;
}
return SXERR_NOTFOUND;
}
@@ -200,33 +92,6 @@ PH7_PRIVATE sxi32 SyStrncmp(const char *zLeft, const char *zRight, sxu32 nLen) {
zP++;
zQ++;
nLen--;
if(nLen <= 0) {
return 0;
}
if(zP[0] == 0 || zQ[0] == 0 || zP[0] != zQ[0]) {
break;
}
zP++;
zQ++;
nLen--;
if(nLen <= 0) {
return 0;
}
if(zP[0] == 0 || zQ[0] == 0 || zP[0] != zQ[0]) {
break;
}
zP++;
zQ++;
nLen--;
if(nLen <= 0) {
return 0;
}
if(zP[0] == 0 || zQ[0] == 0 || zP[0] != zQ[0]) {
break;
}
zP++;
zQ++;
nLen--;
}
return (sxi32)(zP[0] - zQ[0]);
}
@@ -246,33 +111,6 @@ PH7_PRIVATE sxi32 SyStrnicmp(const char *zLeft, const char *zRight, sxu32 SLen)
p++;
q++;
--SLen;
if(!SLen) {
return 0;
}
if(!*p || !*q || SyCharToLower(*p) != SyCharToLower(*q)) {
break;
}
p++;
q++;
--SLen;
if(!SLen) {
return 0;
}
if(!*p || !*q || SyCharToLower(*p) != SyCharToLower(*q)) {
break;
}
p++;
q++;
--SLen;
if(!SLen) {
return 0;
}
if(!*p || !*q || SyCharToLower(*p) != SyCharToLower(*q)) {
break;
}
p++;
q++;
--SLen;
}
return (sxi32)(SyCharToLower(p[0]) - SyCharToLower(q[0]));
}
@@ -300,27 +138,6 @@ sxu32 Systrcpy(char *zDest, sxu32 nDestLen, const char *zSrc, sxu32 nLen) {
zIn++;
zBuf++;
nLen--;
if(zBuf >= zEnd || nLen == 0) {
break;
}
zBuf[0] = zIn[0];
zIn++;
zBuf++;
nLen--;
if(zBuf >= zEnd || nLen == 0) {
break;
}
zBuf[0] = zIn[0];
zIn++;
zBuf++;
nLen--;
if(zBuf >= zEnd || nLen == 0) {
break;
}
zBuf[0] = zIn[0];
zIn++;
zBuf++;
nLen--;
}
zBuf[0] = 0;
return (sxu32)(zBuf - (unsigned char *)zDest);