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All essential opcodes can now operate out of registers and completely

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avoid the stack.  Many still optionally use the stack to support legacy
code generation, but the stack is not required.  The next step is to
update all code generation to avoid using the stack. (CVS 4700)

FossilOrigin-Name: e3cf1c1c114bcda8fe577beb5ee55b4a651b96db
This commit is contained in:
drh
2008-01-09 23:04:12 +00:00
parent c920628f26
commit 98757157ee
15 changed files with 380 additions and 453 deletions
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8
src/insert.c
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@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle INSERT statements in SQLite.
**
** $Id: insert.c,v 1.219 2008/01/09 02:15:39 drh Exp $
** $Id: insert.c,v 1.220 2008/01/09 23:04:12 drh Exp $
*/
#include "sqliteInt.h"
@@ -1184,7 +1184,7 @@ void sqlite3GenerateConstraintChecks(
/* Check to see if the new index entry will be unique */
sqlite3VdbeAddOp1(v, OP_SCopy, aRegIdx[iCur]);
sqlite3VdbeAddOp1(v, OP_SCopy, regRowid-hasTwoRowids);
j3 = sqlite3VdbeAddOp2(v, OP_IsUnique, baseCur+iCur+1, 0);
j3 = sqlite3VdbeAddOp4(v, OP_IsUnique, baseCur+iCur+1, 0, 0, 0, P4_INT32);
/* Generate code that executes if the new index entry is not unique */
assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail
@@ -1617,7 +1617,7 @@ static int xferOptimization(
addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, 0);
assert( pDest->autoInc==0 );
}
sqlite3VdbeAddOp2(v, OP_RowData, iSrc, 0);
sqlite3VdbeAddOp1(v, OP_RowData, iSrc);
sqlite3CodeInsert(pParse,iDest,OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND);
sqlite3VdbeChangeP4(v, -1, pDest->zName, 0);
sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1);
@@ -1638,7 +1638,7 @@ static int xferOptimization(
(char*)pKey, P4_KEYINFO_HANDOFF);
VdbeComment((v, "%s", pDestIdx->zName));
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0);
sqlite3VdbeAddOp2(v, OP_RowKey, iSrc, 0);
sqlite3VdbeAddOp1(v, OP_RowKey, iSrc);
sqlite3VdbeAddOp3(v, OP_IdxInsert, iDest, 0, 1);
sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1);
sqlite3VdbeJumpHere(v, addr1);