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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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131
engine/lib/utils.c
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@@ -24,18 +24,6 @@ PH7_PRIVATE sxi32 SyStrIsNumeric(const char *zSrc, sxu32 nLen, sxu8 *pReal, cons
break;
}
zSrc++;
if(zSrc >= zEnd || (unsigned char)zSrc[0] >= 0xc0 || !SyisDigit(zSrc[0])) {
break;
}
zSrc++;
if(zSrc >= zEnd || (unsigned char)zSrc[0] >= 0xc0 || !SyisDigit(zSrc[0])) {
break;
}
zSrc++;
if(zSrc >= zEnd || (unsigned char)zSrc[0] >= 0xc0 || !SyisDigit(zSrc[0])) {
break;
}
zSrc++;
};
if(zSrc < zEnd && zSrc > zCur) {
int c = zSrc[0];
@@ -120,24 +108,6 @@ PH7_PRIVATE sxi32 SyStrToInt32(const char *zSrc, sxu32 nLen, void *pOutVal, cons
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
if(zSrc >= zEnd || !i || !SyisDigit(zSrc[0])) {
break;
}
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
if(zSrc >= zEnd || !i || !SyisDigit(zSrc[0])) {
break;
}
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
if(zSrc >= zEnd || !i || !SyisDigit(zSrc[0])) {
break;
}
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
}
/* Skip trailing spaces */
while(zSrc < zEnd && SyisSpace(zSrc[0])) {
@@ -191,24 +161,6 @@ PH7_PRIVATE sxi32 SyStrToInt64(const char *zSrc, sxu32 nLen, void *pOutVal, cons
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
if(zSrc >= zEnd || !i || !SyisDigit(zSrc[0])) {
break;
}
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
if(zSrc >= zEnd || !i || !SyisDigit(zSrc[0])) {
break;
}
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
if(zSrc >= zEnd || !i || !SyisDigit(zSrc[0])) {
break;
}
nVal = nVal * 10 + (zSrc[0] - '0') ;
--i ;
zSrc++;
}
/* Skip trailing spaces */
while(zSrc < zEnd && SyisSpace(zSrc[0])) {
@@ -368,30 +320,6 @@ PH7_PRIVATE sxi32 SyOctalStrToInt64(const char *zSrc, sxu32 nLen, void *pOutVal,
}
nVal = nVal * 8 + c;
zSrc++;
if(zSrc >= zEnd || !SyisDigit(zSrc[0])) {
break;
}
if((c = zSrc[0] - '0') > 7 || (int)(zSrc - zIn) > 20) {
break;
}
nVal = nVal * 8 + c;
zSrc++;
if(zSrc >= zEnd || !SyisDigit(zSrc[0])) {
break;
}
if((c = zSrc[0] - '0') > 7 || (int)(zSrc - zIn) > 20) {
break;
}
nVal = nVal * 8 + c;
zSrc++;
if(zSrc >= zEnd || !SyisDigit(zSrc[0])) {
break;
}
if((c = zSrc[0] - '0') > 7 || (int)(zSrc - zIn) > 20) {
break;
}
nVal = nVal * 8 + c;
zSrc++;
}
/* Skip trailing spaces */
while(zSrc < zEnd && SyisSpace(zSrc[0])) {
@@ -445,24 +373,6 @@ PH7_PRIVATE sxi32 SyBinaryStrToInt64(const char *zSrc, sxu32 nLen, void *pOutVal
c = zSrc[0] - '0';
nVal = (nVal << 1) + c;
zSrc++;
if(zSrc >= zEnd || (zSrc[0] != '1' && zSrc[0] != '0') || (int)(zSrc - zIn) > 62) {
break;
}
c = zSrc[0] - '0';
nVal = (nVal << 1) + c;
zSrc++;
if(zSrc >= zEnd || (zSrc[0] != '1' && zSrc[0] != '0') || (int)(zSrc - zIn) > 62) {
break;
}
c = zSrc[0] - '0';
nVal = (nVal << 1) + c;
zSrc++;
if(zSrc >= zEnd || (zSrc[0] != '1' && zSrc[0] != '0') || (int)(zSrc - zIn) > 62) {
break;
}
c = zSrc[0] - '0';
nVal = (nVal << 1) + c;
zSrc++;
}
/* Skip trailing spaces */
while(zSrc < zEnd && SyisSpace(zSrc[0])) {
@@ -523,24 +433,6 @@ PH7_PRIVATE sxi32 SyStrToReal(const char *zSrc, sxu32 nLen, void *pOutVal, const
Val = Val * 10.0 + (zSrc[0] - '0') ;
zSrc++ ;
--Lim;
if(zSrc >= zEnd || !Lim || !SyisDigit(zSrc[0])) {
break ;
}
Val = Val * 10.0 + (zSrc[0] - '0') ;
zSrc++ ;
--Lim;
if(zSrc >= zEnd || !Lim || !SyisDigit(zSrc[0])) {
break ;
}
Val = Val * 10.0 + (zSrc[0] - '0') ;
zSrc++ ;
--Lim;
if(zSrc >= zEnd || !Lim || !SyisDigit(zSrc[0])) {
break ;
}
Val = Val * 10.0 + (zSrc[0] - '0') ;
zSrc++ ;
--Lim;
}
if(zSrc < zEnd && (zSrc[0] == '.' || zSrc[0] == ',')) {
sxreal dec = 1.0;
@@ -553,27 +445,6 @@ PH7_PRIVATE sxi32 SyStrToReal(const char *zSrc, sxu32 nLen, void *pOutVal, const
dec *= 10.0;
zSrc++ ;
--Lim;
if(zSrc >= zEnd || !Lim || !SyisDigit(zSrc[0])) {
break ;
}
Val = Val * 10.0 + (zSrc[0] - '0') ;
dec *= 10.0;
zSrc++ ;
--Lim;
if(zSrc >= zEnd || !Lim || !SyisDigit(zSrc[0])) {
break ;
}
Val = Val * 10.0 + (zSrc[0] - '0') ;
dec *= 10.0;
zSrc++ ;
--Lim;
if(zSrc >= zEnd || !Lim || !SyisDigit(zSrc[0])) {
break ;
}
Val = Val * 10.0 + (zSrc[0] - '0') ;
dec *= 10.0;
zSrc++ ;
--Lim;
}
Val /= dec;
}
@@ -638,4 +509,4 @@ PH7_PRIVATE sxi32 SyRealPath(const char *zPath, char **fPath) {
return PH7_IO_ERR;
}
return PH7_OK;
}
}