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Small performance improvement and size reduction in the expression

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code generator.

FossilOrigin-Name: eeb53e219551d8a05a87f1de9a7cd9af295d08a296f1f435a8509ea1252ccdcc
This commit is contained in:
drh
2020-05-27 12:44:28 +00:00
parent 399062cccb
commit b639a2094a
3 changed files with 11 additions and 13 deletions
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10
src/expr.c
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@@ -3797,10 +3797,7 @@ int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target){
int p5 = 0;
assert( target>0 && target<=pParse->nMem );
if( v==0 ){
assert( pParse->db->mallocFailed );
return 0;
}
assert( v!=0 );
expr_code_doover:
if( pExpr==0 ){
@@ -4630,9 +4627,10 @@ void sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){
assert( pExpr==0 || !ExprHasVVAProperty(pExpr,EP_Immutable) );
assert( target>0 && target<=pParse->nMem );
inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
assert( pParse->pVdbe!=0 || pParse->db->mallocFailed );
if( inReg!=target && pParse->pVdbe ){
if( pParse->pVdbe==0 ) return;
inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
if( inReg!=target ){
u8 op;
if( ExprHasProperty(pExpr,EP_Subquery) ){
op = OP_Copy;