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Register-ify the OP_AddImm and all casting opcodes. Omit the

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OP_MemIncr opcode. (CVS 4683)

FossilOrigin-Name: 3e8a07dd3cc9921ad39e379576abb0b485a42202
This commit is contained in:
drh
2008-01-05 05:20:10 +00:00
parent b1fdb2adea
commit 8558cde1ab
12 changed files with 100 additions and 120 deletions
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10
src/select.c
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@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle SELECT statements in SQLite.
**
** $Id: select.c,v 1.385 2008/01/05 04:06:04 drh Exp $
** $Id: select.c,v 1.386 2008/01/05 05:20:10 drh Exp $
*/
#include "sqliteInt.h"
@@ -395,7 +395,7 @@ static void pushOntoSorter(
if( pSelect->iLimit>=0 ){
int addr1, addr2;
addr1 = sqlite3VdbeAddOp2(v, OP_IfMemZero, pSelect->iLimit+1, 0);
sqlite3VdbeAddOp2(v, OP_MemIncr, -1, pSelect->iLimit+1);
sqlite3VdbeAddOp2(v, OP_AddImm, pSelect->iLimit+1, -1);
addr2 = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0);
sqlite3VdbeJumpHere(v, addr1);
sqlite3VdbeAddOp2(v, OP_Last, pOrderBy->iECursor, 0);
@@ -416,7 +416,7 @@ static void codeOffset(
){
if( p->iOffset>=0 && iContinue!=0 ){
int addr;
sqlite3VdbeAddOp2(v, OP_MemIncr, -1, p->iOffset);
sqlite3VdbeAddOp2(v, OP_AddImm, p->iOffset, -1);
addr = sqlite3VdbeAddOp2(v, OP_IfMemNeg, p->iOffset, 0);
if( nPop>0 ){
sqlite3VdbeAddOp2(v, OP_Pop, nPop, 0);
@@ -703,7 +703,7 @@ static int selectInnerLoop(
/* Jump to the end of the loop if the LIMIT is reached.
*/
if( p->iLimit>=0 && pOrderBy==0 ){
sqlite3VdbeAddOp2(v, OP_MemIncr, -1, p->iLimit);
sqlite3VdbeAddOp2(v, OP_AddImm, p->iLimit, -1);
sqlite3VdbeAddOp2(v, OP_IfMemZero, p->iLimit, iBreak);
}
return 0;
@@ -834,7 +834,7 @@ static void generateSortTail(
/* Jump to the end of the loop when the LIMIT is reached
*/
if( p->iLimit>=0 ){
sqlite3VdbeAddOp2(v, OP_MemIncr, -1, p->iLimit);
sqlite3VdbeAddOp2(v, OP_AddImm, p->iLimit, -1);
sqlite3VdbeAddOp2(v, OP_IfMemZero, p->iLimit, brk);
}