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Small performance optimizations.

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FossilOrigin-Name: 99fd34b58a9b09af20f1f1a3c37137ae55159310c8af97806550eeee6adc4fc5
This commit is contained in:
drh
2024-07-05 01:05:34 +00:00
parent a61f11f307
commit 615fc1f083
4 changed files with 13 additions and 10 deletions
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4
src/expr.c
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@ -3436,6 +3436,7 @@ static int findCompatibleInRhsSubrtn(
Vdbe *v;
if( pNewSig==0 ) return 0;
if( pParse->bHasSubrtn==0 ) return 0;
assert( pExpr->op==TK_IN );
assert( !ExprUseYSub(pExpr) );
assert( ExprUseXSelect(pExpr) );
@ -3446,8 +3447,8 @@ static int findCompatibleInRhsSubrtn(
pOp = sqlite3VdbeGetOp(v, 1);
pEnd = sqlite3VdbeGetLastOp(v);
for(; pOp<pEnd; pOp++){
if( pOp->opcode!=OP_BeginSubrtn ) continue;
if( pOp->p4type!=P4_SUBRTNSIG ) continue;
assert( pOp->opcode==OP_BeginSubrtn );
pSig = pOp->p4.pSubrtnSig;
assert( pSig!=0 );
if( pNewSig->selId!=pSig->selId ) continue;
@ -3563,6 +3564,7 @@ void sqlite3CodeRhsOfIN(
pSig->regReturn = pExpr->y.sub.regReturn;
pSig->iTable = iTab;
sqlite3VdbeChangeP4(v, -1, (const char*)pSig, P4_SUBRTNSIG);
pParse->bHasSubrtn = 1;
}
addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
}

1
src/sqliteInt.h
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@ -3834,6 +3834,7 @@ struct Parse {
u8 prepFlags; /* SQLITE_PREPARE_* flags */
u8 withinRJSubrtn; /* Nesting level for RIGHT JOIN body subroutines */
u8 bHasWith; /* True if statement contains WITH */
u8 bHasSubrtn; /* True if any P4_SUBRTNSIG has been set */
#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST)
u8 earlyCleanup; /* OOM inside sqlite3ParserAddCleanup() */
#endif