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Overview
| Comment: | Small size and performance optimization to sqlite3VdbeChangeP5(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
3c93c8f5bbf54ed2a331079b28fdd94e |
| User & Date: | drh 2016-09-29 20:28:34 |
Context
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2016-09-30
| ||
| 17:46 | Avoid unnecessary Mem initializations when generating a new sqlite3_stmt object. (check-in: 47ae1cda user: drh tags: trunk) | |
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2016-09-29
| ||
| 20:28 | Small size and performance optimization to sqlite3VdbeChangeP5(). (check-in: 3c93c8f5 user: drh tags: trunk) | |
| 19:50 | Remove the peep-hole optimization of removing OP_Close opcodes that come before OP_Halt, as the extra work of removing those opcodes uses more cycles than just running them. (check-in: 984a96d7 user: drh tags: trunk) | |
Changes
Changes to src/vdbeaux.c.
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void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){
sqlite3VdbeGetOp(p,addr)->p2 = val;
}
void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){
sqlite3VdbeGetOp(p,addr)->p3 = val;
}
void sqlite3VdbeChangeP5(Vdbe *p, u8 p5){
if( !p->db->mallocFailed ) p->aOp[p->nOp-1].p5 = p5;
}
/*
** Change the P2 operand of instruction addr so that it points to
** the address of the next instruction to be coded.
*/
void sqlite3VdbeJumpHere(Vdbe *p, int addr){
|
> | |
760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 |
void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){
sqlite3VdbeGetOp(p,addr)->p2 = val;
}
void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){
sqlite3VdbeGetOp(p,addr)->p3 = val;
}
void sqlite3VdbeChangeP5(Vdbe *p, u8 p5){
assert( p->nOp>0 || p->db->mallocFailed );
if( p->nOp>0 ) p->aOp[p->nOp-1].p5 = p5;
}
/*
** Change the P2 operand of instruction addr so that it points to
** the address of the next instruction to be coded.
*/
void sqlite3VdbeJumpHere(Vdbe *p, int addr){
|