Remember the size of the Vdbe.aOp[] array in bytes, to avoid unnecessary

calls to sqlite3_msize().

FossilOrigin-Name: 3e852804c85a5c9f4c4ffafd55d03af6d19fe5cc

src/sqliteInt.h

@@ -2732,6 +2732,7 @@ struct Parse {
   int nSet;            /* Number of sets used so far */
   int nOnce;           /* Number of OP_Once instructions so far */
   int nOpAlloc;        /* Number of slots allocated for Vdbe.aOp[] */
+  int szOpAlloc;       /* Bytes of memory space allocated for Vdbe.aOp[] */
   int iFixedOp;        /* Never back out opcodes iFixedOp-1 or earlier */
   int ckBase;          /* Base register of data during check constraints */
   int iSelfTab;        /* Table of an index whose exprs are being coded */

src/vdbeaux.c

@@ -35,6 +35,7 @@ Vdbe *sqlite3VdbeCreate(Parse *pParse){
   assert( pParse->aLabel==0 );
   assert( pParse->nLabel==0 );
   assert( pParse->nOpAlloc==0 );
+  assert( pParse->szOpAlloc==0 );
   return p;
 }
 
@@ -124,7 +125,8 @@ static int growOpArray(Vdbe *v, int nOp){
   assert( nNew>=(p->nOpAlloc+nOp) );
   pNew = sqlite3DbRealloc(p->db, v->aOp, nNew*sizeof(Op));
   if( pNew ){
-    p->nOpAlloc = sqlite3DbMallocSize(p->db, pNew)/sizeof(Op);
+    p->szOpAlloc = sqlite3DbMallocSize(p->db, pNew);
+    p->nOpAlloc = p->szOpAlloc/sizeof(Op);
     v->aOp = pNew;
   }
   return (pNew ? SQLITE_OK : SQLITE_NOMEM);
@@ -1849,8 +1851,8 @@ void sqlite3VdbeMakeReady(
   /* Allocate space for memory registers, SQL variables, VDBE cursors and 
   ** an array to marshal SQL function arguments in.
   */
-  zCsr = ((u8*)p->aOp) + ROUND8(sizeof(Op)*p->nOp);       /* Available space */
-  nFree = sqlite3_msize(p->aOp) - ROUND8(sizeof(Op)*p->nOp); /* Size of zCsr */
+  zCsr = ((u8*)p->aOp) + ROUND8(sizeof(Op)*p->nOp);      /* Available space */
+  nFree = pParse->szOpAlloc - ROUND8(sizeof(Op)*p->nOp); /* Size of zCsr */
 
   resolveP2Values(p, &nArg);
   p->usesStmtJournal = (u8)(pParse->isMultiWrite && pParse->mayAbort);