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Attempt to speed up sqlite3VdbeRecordCompare() by various means. This code is in an interim state.

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FossilOrigin-Name: 85206e0bbac29adab52bef795f6d1479f2ae2c0e
This commit is contained in:
dan
2014-02-25 21:01:25 +00:00
parent e8c1eba9a9
commit 1fed5dab0d
10 changed files with 440 additions and 169 deletions
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23
src/vdbe.c
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@@ -3555,16 +3555,16 @@ case OP_SeekGT: { /* jump, in3 */
/* The next line of code computes as follows, only faster:
** if( oc==OP_SeekGT || oc==OP_SeekLE ){
** r.flags = UNPACKED_INCRKEY;
** r.default_rc = -1;
** }else{
** r.flags = 0;
** r.default_rc = +1;
** }
*/
r.flags = (u8)(UNPACKED_INCRKEY * (1 & (oc - OP_SeekLT)));
assert( oc!=OP_SeekGT || r.flags==UNPACKED_INCRKEY );
assert( oc!=OP_SeekLE || r.flags==UNPACKED_INCRKEY );
assert( oc!=OP_SeekGE || r.flags==0 );
assert( oc!=OP_SeekLT || r.flags==0 );
r.default_rc = ((1 & (oc - OP_SeekLT)) ? -1 : +1);
assert( oc!=OP_SeekGT || r.default_rc==-1 );
assert( oc!=OP_SeekLE || r.default_rc==-1 );
assert( oc!=OP_SeekGE || r.default_rc==+1 );
assert( oc!=OP_SeekLT || r.default_rc==+1 );
r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG
@@ -3722,7 +3722,6 @@ case OP_Found: { /* jump, in3 */
if( ii ) REGISTER_TRACE(pOp->p3+ii, &r.aMem[ii]);
#endif
}
r.flags = UNPACKED_PREFIX_MATCH;
pIdxKey = &r;
}else{
pIdxKey = sqlite3VdbeAllocUnpackedRecord(
@@ -3732,8 +3731,8 @@ case OP_Found: { /* jump, in3 */
assert( pIn3->flags & MEM_Blob );
assert( (pIn3->flags & MEM_Zero)==0 ); /* zeroblobs already expanded */
sqlite3VdbeRecordUnpack(pC->pKeyInfo, pIn3->n, pIn3->z, pIdxKey);
pIdxKey->flags |= UNPACKED_PREFIX_MATCH;
}
pIdxKey->default_rc = 0;
if( pOp->opcode==OP_NoConflict ){
/* For the OP_NoConflict opcode, take the jump if any of the
** input fields are NULL, since any key with a NULL will not
@@ -4622,7 +4621,7 @@ case OP_IdxDelete: {
assert( pOp->p5==0 );
r.pKeyInfo = pC->pKeyInfo;
r.nField = (u16)pOp->p3;
r.flags = UNPACKED_PREFIX_MATCH;
r.default_rc = 0;
r.aMem = &aMem[pOp->p2];
#ifdef SQLITE_DEBUG
{ int i; for(i=0; i<r.nField; i++) assert( memIsValid(&r.aMem[i]) ); }
@@ -4736,10 +4735,10 @@ case OP_IdxGE: { /* jump */
r.nField = (u16)pOp->p4.i;
if( pOp->opcode<OP_IdxLT ){
assert( pOp->opcode==OP_IdxLE || pOp->opcode==OP_IdxGT );
r.flags = UNPACKED_INCRKEY | UNPACKED_PREFIX_MATCH;
r.default_rc = -1;
}else{
assert( pOp->opcode==OP_IdxGE || pOp->opcode==OP_IdxLT );
r.flags = UNPACKED_PREFIX_MATCH;
r.default_rc = 0;
}
r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG