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Overview
| Comment: | Slightly smaller and faster implementation of OP_If and OP_IfNot. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
6ab42934e2c4957b5d8927bf4434a9db |
| User & Date: | drh 2018-01-25 01:20:29 |
Context
|
2018-01-25
| ||
| 20:50 | Reorganize zipfile.c code to make it easier to add support for in-memory zip archive processing. check-in: 30b92582 user: dan tags: trunk | |
| 01:20 | Slightly smaller and faster implementation of OP_If and OP_IfNot. check-in: 6ab42934 user: drh tags: trunk | |
|
2018-01-24
| ||
| 20:42 | When unpacking a sorter record, do so from right to left instead of left to right, since by starting with the right-most column, the work done by OP_Column opcodes is reduced. check-in: 8055e4f4 user: drh tags: trunk | |
Changes
Changes to src/vdbe.c.
2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 |
case OP_If: /* jump, in1 */
case OP_IfNot: { /* jump, in1 */
int c;
pIn1 = &aMem[pOp->p1];
if( pIn1->flags & MEM_Null ){
c = pOp->p3;
}else{
#ifdef SQLITE_OMIT_FLOATING_POINT
c = sqlite3VdbeIntValue(pIn1)!=0;
#else
c = sqlite3VdbeRealValue(pIn1)!=0.0;
#endif
if( pOp->opcode==OP_IfNot ) c = !c;
}
VdbeBranchTaken(c!=0, 2);
if( c ){
goto jump_to_p2;
}
break;
|
| | | | < > |
2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 |
case OP_If: /* jump, in1 */
case OP_IfNot: { /* jump, in1 */
int c;
pIn1 = &aMem[pOp->p1];
if( pIn1->flags & MEM_Null ){
c = pOp->p3;
}else{
if( pIn1->flags & MEM_Int ){
c = pIn1->u.i!=0;
}else{
c = sqlite3VdbeRealValue(pIn1)!=0.0;
}
if( pOp->opcode==OP_IfNot ) c = !c;
}
VdbeBranchTaken(c!=0, 2);
if( c ){
goto jump_to_p2;
}
break;
|