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Overview
| Comment: | Remove an unnecessary memset() for a small size reduction and speed improvement. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 730d7efb6fef54ed7c1f4ae27e3b5577 |
| User & Date: | drh 2016-01-20 02:01:02 |
Context
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2016-01-20
| ||
| 02:21 | Remove an unnecessary memset() from the symbol name resolver. check-in: da527dda user: drh tags: trunk | |
| 02:01 | Remove an unnecessary memset() for a small size reduction and speed improvement. check-in: 730d7efb user: drh tags: trunk | |
| 01:48 | During compilation, transfer the azVar[0..nzVar-1] array from Parse to Vdbe rather than copying it. Smaller and faster code. check-in: 80dd495f user: drh tags: trunk | |
Changes
Changes to src/vdbeaux.c.
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*/
int sqlite3VdbeChangeToNoop(Vdbe *p, int addr){
VdbeOp *pOp;
if( p->db->mallocFailed ) return 0;
assert( addr>=0 && addr<p->nOp );
pOp = &p->aOp[addr];
freeP4(p->db, pOp->p4type, pOp->p4.p);
memset(pOp, 0, sizeof(pOp[0]));
pOp->opcode = OP_Noop;
return 1;
}
/*
** If the last opcode is "op" and it is not a jump destination,
** then remove it. Return true if and only if an opcode was removed.
|
| |
845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 |
*/
int sqlite3VdbeChangeToNoop(Vdbe *p, int addr){
VdbeOp *pOp;
if( p->db->mallocFailed ) return 0;
assert( addr>=0 && addr<p->nOp );
pOp = &p->aOp[addr];
freeP4(p->db, pOp->p4type, pOp->p4.p);
pOp->p4type = P4_NOTUSED;
pOp->opcode = OP_Noop;
return 1;
}
/*
** If the last opcode is "op" and it is not a jump destination,
** then remove it. Return true if and only if an opcode was removed.
|