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Improvements to the way the LIKE optimization is implemented, resulting in

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slightly smaller and faster code that is easier to test.

FossilOrigin-Name: 54c63b329288729031f45b7778752552cd90e226
This commit is contained in:
drh
2016-05-02 10:25:42 +00:00
parent 40cf36ff17
commit 44aebff246
6 changed files with 43 additions and 52 deletions
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9
src/where.c
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@@ -4607,13 +4607,8 @@ void sqlite3WhereEnd(WhereInfo *pWInfo){
}
#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS
if( pLevel->addrLikeRep ){
int op;
if( sqlite3VdbeGetOp(v, pLevel->addrLikeRep-1)->p1 ){
op = OP_DecrJumpZero;
}else{
op = OP_JumpZeroIncr;
}
sqlite3VdbeAddOp2(v, op, pLevel->iLikeRepCntr, pLevel->addrLikeRep);
sqlite3VdbeAddOp2(v, OP_DecrJumpZero, (int)(pLevel->iLikeRepCntr>>1),
pLevel->addrLikeRep);
VdbeCoverage(v);
}
#endif