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Overview
| Comment: | Optimization to vdbeRecordCompareInt() makes it slightly smaller and faster. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
5a2a7712cb8e0b686942dfab4e9e67b5 |
| User & Date: | drh 2016-09-15 00:04:46 |
Context
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2016-09-15
| ||
| 00:32 | Slight size reduction and performance increase in sqlite3VdbeHalt(). check-in: 5990a1bd user: drh tags: trunk | |
| 00:04 | Optimization to vdbeRecordCompareInt() makes it slightly smaller and faster. check-in: 5a2a7712 user: drh tags: trunk | |
|
2016-09-14
| ||
| 18:56 | Update comments used to generate API documentation to include the new "[dateof:3.X.Y]" notation for dates of release where appropriate. No changes to code. check-in: 55f7f8ee user: drh tags: trunk | |
Changes
Changes to src/vdbeaux.c.
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UnpackedRecord *pPKey2 /* Right key */
){
const u8 *aKey = &((const u8*)pKey1)[*(const u8*)pKey1 & 0x3F];
int serial_type = ((const u8*)pKey1)[1];
int res;
u32 y;
u64 x;
i64 v = pPKey2->aMem[0].u.i;
i64 lhs;
vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
assert( (*(u8*)pKey1)<=0x3F || CORRUPT_DB );
switch( serial_type ){
case 1: { /* 1-byte signed integer */
lhs = ONE_BYTE_INT(aKey);
................................................................................
case 0: case 7:
return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2);
default:
return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2);
}
if( v>lhs ){
res = pPKey2->r1;
}else if( v<lhs ){
res = pPKey2->r2;
}else if( pPKey2->nField>1 ){
/* The first fields of the two keys are equal. Compare the trailing
** fields. */
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UnpackedRecord *pPKey2 /* Right key */
){
const u8 *aKey = &((const u8*)pKey1)[*(const u8*)pKey1 & 0x3F];
int serial_type = ((const u8*)pKey1)[1];
int res;
u32 y;
u64 x;
i64 v;
i64 lhs;
vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
assert( (*(u8*)pKey1)<=0x3F || CORRUPT_DB );
switch( serial_type ){
case 1: { /* 1-byte signed integer */
lhs = ONE_BYTE_INT(aKey);
................................................................................
case 0: case 7:
return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2);
default:
return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2);
}
v = pPKey2->aMem[0].u.i;
if( v>lhs ){
res = pPKey2->r1;
}else if( v<lhs ){
res = pPKey2->r2;
}else if( pPKey2->nField>1 ){
/* The first fields of the two keys are equal. Compare the trailing
** fields. */
|