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Streamline the processing of the AND operator. Slightly smaller and faster.

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FossilOrigin-Name: 7713996aa99ce6dd35b5a2db74dd26658fb8d9817169b2a7531cdef6edb41403
This commit is contained in:
drh
2019-04-19 13:38:34 +00:00
parent 680f0fe32a
commit d5c851c1cb
9 changed files with 43 additions and 46 deletions
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4
src/wherecode.c
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@@ -999,7 +999,7 @@ static void codeCursorHint(
}
/* If we survive all prior tests, that means this term is worth hinting */
pExpr = sqlite3ExprAnd(db, pExpr, sqlite3ExprDup(db, pTerm->pExpr, 0));
pExpr = sqlite3ExprAnd(pParse, pExpr, sqlite3ExprDup(db, pTerm->pExpr, 0));
}
if( pExpr!=0 ){
sWalker.xExprCallback = codeCursorHintFixExpr;
@@ -1964,7 +1964,7 @@ Bitmask sqlite3WhereCodeOneLoopStart(
if( (pWC->a[iTerm].eOperator & WO_ALL)==0 ) continue;
testcase( pWC->a[iTerm].wtFlags & TERM_ORINFO );
pExpr = sqlite3ExprDup(db, pExpr, 0);
pAndExpr = sqlite3ExprAnd(db, pAndExpr, pExpr);
pAndExpr = sqlite3ExprAnd(pParse, pAndExpr, pExpr);
}
if( pAndExpr ){
/* The extra 0x10000 bit on the opcode is masked off and does not