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In the Mem object, stop requiring that Mem.xDel be NULL when the MEM_Dyn

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bit is clear.  Also reduce the amount of initialization of Mem objects.
All for a small size reduction and performance increase.

FossilOrigin-Name: fdddb477c89dabb9f7bf2d5ccb32534868df3a03
This commit is contained in:
drh
2014-09-17 16:41:15 +00:00
parent 0725cabe3a
commit d3b74200a8
6 changed files with 37 additions and 41 deletions
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12
src/vdbe.c
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@@ -1174,7 +1174,6 @@ case OP_Move: {
}
#endif
pIn1->flags = MEM_Undefined;
pIn1->xDel = 0;
pIn1->zMalloc = zMalloc;
REGISTER_TRACE(p2++, pOut);
pIn1++;
@@ -2645,7 +2644,6 @@ case OP_MakeRecord: {
assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) );
pOut->n = (int)nByte;
pOut->flags = MEM_Blob;
pOut->xDel = 0;
if( nZero ){
pOut->u.nZero = nZero;
pOut->flags |= MEM_Zero;
@@ -4755,7 +4753,7 @@ case OP_IdxRowid: { /* out2-prerelease */
assert( pC->isTable==0 );
if( !pC->nullRow ){
rowid = 0; /* Not needed. Only used to silence a warning. */
rc = sqlite3VdbeIdxRowid(pCrsr, &rowid);
rc = sqlite3VdbeIdxRowid(db, pCrsr, &rowid);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
@@ -4839,7 +4837,7 @@ case OP_IdxGE: { /* jump */
{ int i; for(i=0; i<r.nField; i++) assert( memIsValid(&r.aMem[i]) ); }
#endif
res = 0; /* Not needed. Only used to silence a warning. */
rc = sqlite3VdbeIdxKeyCompare(pC, &r, &res);
rc = sqlite3VdbeIdxKeyCompare(db, pC, &r, &res);
assert( (OP_IdxLE&1)==(OP_IdxLT&1) && (OP_IdxGE&1)==(OP_IdxGT&1) );
if( (pOp->opcode&1)==(OP_IdxLT&1) ){
assert( pOp->opcode==OP_IdxLE || pOp->opcode==OP_IdxLT );
@@ -5609,11 +5607,7 @@ case OP_AggStep: {
assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) );
ctx.pMem = pMem = &aMem[pOp->p3];
pMem->n++;
t.flags = MEM_Null;
t.z = 0;
t.zMalloc = 0;
t.xDel = 0;
t.db = db;
sqlite3VdbeMemInit(&t, db, MEM_Null);
ctx.pOut = &t;
ctx.isError = 0;
ctx.pColl = 0;