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Overview
| Comment: | Performance improvement for the OP_MustBeInt opcode in the VDBE. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
96a65388e75fed96e2e73ef65726f6db |
| User & Date: | drh 2013-11-20 00:59:02 |
Context
|
2013-11-20
| ||
| 02:53 | Simplifications to the VdbeCursor object. check-in: 5562cd34 user: drh tags: trunk | |
| 00:59 | Performance improvement for the OP_MustBeInt opcode in the VDBE. check-in: 96a65388 user: drh tags: trunk | |
|
2013-11-19
| ||
| 18:17 | Fix a harmless MSVC compiler warning. check-in: 6cc023bb user: drh tags: trunk | |
Changes
Changes to src/vdbe.c.
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** Force the value in register P1 to be an integer. If the value
** in P1 is not an integer and cannot be converted into an integer
** without data loss, then jump immediately to P2, or if P2==0
** raise an SQLITE_MISMATCH exception.
*/
case OP_MustBeInt: { /* jump, in1 */
pIn1 = &aMem[pOp->p1];
applyAffinity(pIn1, SQLITE_AFF_NUMERIC, encoding);
if( (pIn1->flags & MEM_Int)==0 ){
if( pOp->p2==0 ){
rc = SQLITE_MISMATCH;
goto abort_due_to_error;
}else{
pc = pOp->p2 - 1;
}
}else{
MemSetTypeFlag(pIn1, MEM_Int);
}
break;
}
#ifndef SQLITE_OMIT_FLOATING_POINT
/* Opcode: RealAffinity P1 * * * *
**
** If register P1 holds an integer convert it to a real value.
|
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** Force the value in register P1 to be an integer. If the value
** in P1 is not an integer and cannot be converted into an integer
** without data loss, then jump immediately to P2, or if P2==0
** raise an SQLITE_MISMATCH exception.
*/
case OP_MustBeInt: { /* jump, in1 */
pIn1 = &aMem[pOp->p1];
if( (pIn1->flags & MEM_Int)==0 ){
applyAffinity(pIn1, SQLITE_AFF_NUMERIC, encoding);
if( (pIn1->flags & MEM_Int)==0 ){
if( pOp->p2==0 ){
rc = SQLITE_MISMATCH;
goto abort_due_to_error;
}else{
pc = pOp->p2 - 1;
break;
}
}
}
MemSetTypeFlag(pIn1, MEM_Int);
break;
}
#ifndef SQLITE_OMIT_FLOATING_POINT
/* Opcode: RealAffinity P1 * * * *
**
** If register P1 holds an integer convert it to a real value.
|