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Add comments to unused P3 fields of selected instructions when NDEBUG is

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not defined.  This makes VDBE program dumps more readable during debugging. (CVS 1973)

FossilOrigin-Name: 4871c77f8fce36ff230e1f026f4e4e49492515e9
This commit is contained in:
drh
2004-09-19 02:15:24 +00:00
parent 344737f60a
commit ad6d94607f
13 changed files with 91 additions and 58 deletions
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11
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 1.208 2004/09/08 15:09:41 drh Exp $
** $Id: select.c,v 1.209 2004/09/19 02:15:26 drh Exp $
*/
#include "sqliteInt.h"
@@ -344,9 +344,11 @@ static void codeLimiter(
sqlite3VdbeAddOp(v, OP_Pop, nPop, 0);
}
sqlite3VdbeAddOp(v, OP_Goto, 0, iContinue);
VdbeComment((v, "# skip OFFSET records"));
}
if( p->iLimit>=0 ){
sqlite3VdbeAddOp(v, OP_MemIncr, p->iLimit, iBreak);
VdbeComment((v, "# exit when LIMIT reached"));
}
}
@@ -415,6 +417,7 @@ static int selectInnerLoop(
sqlite3VdbeAddOp(v, OP_Distinct, distinct, sqlite3VdbeCurrentAddr(v)+3);
sqlite3VdbeAddOp(v, OP_Pop, pEList->nExpr+1, 0);
sqlite3VdbeAddOp(v, OP_Goto, 0, iContinue);
VdbeComment((v, "# skip indistinct records"));
sqlite3VdbeAddOp(v, OP_String8, 0, 0);
sqlite3VdbeAddOp(v, OP_PutStrKey, distinct, 0);
if( pOrderBy==0 ){
@@ -1223,6 +1226,7 @@ static void computeLimitRegisters(Parse *pParse, Select *p){
if( v==0 ) return;
sqlite3VdbeAddOp(v, OP_Integer, -p->nLimit, 0);
sqlite3VdbeAddOp(v, OP_MemStore, iMem, 1);
VdbeComment((v, "# LIMIT counter"));
p->iLimit = iMem;
}
if( p->nOffset>0 ){
@@ -1231,6 +1235,7 @@ static void computeLimitRegisters(Parse *pParse, Select *p){
if( v==0 ) return;
sqlite3VdbeAddOp(v, OP_Integer, -p->nOffset, 0);
sqlite3VdbeAddOp(v, OP_MemStore, iMem, 1);
VdbeComment((v, "# OFFSET counter"));
p->iOffset = iMem;
}
}
@@ -2107,9 +2112,7 @@ static int simpleMinMaxQuery(Parse *pParse, Select *p, int eDest, int iParm){
base = pSrc->a[0].iCursor;
computeLimitRegisters(pParse, p);
if( pSrc->a[0].pSelect==0 ){
sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
sqlite3VdbeAddOp(v, OP_OpenRead, base, pTab->tnum);
sqlite3VdbeAddOp(v, OP_SetNumColumns, base, pTab->nCol);
sqlite3OpenTableForReading(v, base, pTab);
}
cont = sqlite3VdbeMakeLabel(v);
if( pIdx==0 ){