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Factor all KeyInfo object allocations into a single function:

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sqlite3KeyInfoAlloc().  Always allocate enough space so that 
sqlite3VdbeRecordCompare() can avoid checking boundaries and hence
run faster.

FossilOrigin-Name: 7301bedd94c8610568349953b18ff3575203e1b2
This commit is contained in:
drh
2013-08-05 19:11:29 +00:00
parent af5b2af77d
commit 323df7907e
8 changed files with 67 additions and 78 deletions
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src/vdbe.c
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@@ -555,7 +555,7 @@ int sqlite3VdbeExec(
int iCompare = 0; /* Result of last OP_Compare operation */
unsigned nVmStep = 0; /* Number of virtual machine steps */
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
unsigned nProgressLimit; /* Invoke xProgress() when nVmStep reaches this */
unsigned nProgressLimit = 0;/* Invoke xProgress() when nVmStep reaches this */
#endif
Mem *aMem = p->aMem; /* Copy of p->aMem */
Mem *pIn1 = 0; /* 1st input operand */