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Improved performance by manually in-lining the sqlite3VdbeIdxKeyCompare()

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routine for the OP_IdxGT opcode and its kin.

FossilOrigin-Name: 2206a2c848a122ee220c89427f9be0460cba0706f58852139d7b37184ce29a29
This commit is contained in:
drh
2020-09-29 16:05:09 +00:00
parent 46f0f4e56d
commit c40076a8cf
3 changed files with 33 additions and 10 deletions
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29
src/vdbe.c
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@@ -6026,8 +6026,31 @@ case OP_IdxGE: { /* jump */
}
}
#endif
res = 0; /* Not needed. Only used to silence a warning. */
rc = sqlite3VdbeIdxKeyCompare(db, pC, &r, &res);
/* Inlined version of sqlite3VdbeIdxKeyCompare() */
{
i64 nCellKey = 0;
BtCursor *pCur;
Mem m;
assert( pC->eCurType==CURTYPE_BTREE );
pCur = pC->uc.pCursor;
assert( sqlite3BtreeCursorIsValid(pCur) );
nCellKey = sqlite3BtreePayloadSize(pCur);
/* nCellKey will always be between 0 and 0xffffffff because of the way
** that btreeParseCellPtr() and sqlite3GetVarint32() are implemented */
if( nCellKey<=0 || nCellKey>0x7fffffff ){
rc = SQLITE_CORRUPT_BKPT;
goto abort_due_to_error;
}
sqlite3VdbeMemInit(&m, db, 0);
rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
if( rc ) goto abort_due_to_error;
res = sqlite3VdbeRecordCompareWithSkip(m.n, m.z, &r, 0);
sqlite3VdbeMemRelease(&m);
}
/* End of inlined sqlite3VdbeIdxKeyCompare() */
assert( (OP_IdxLE&1)==(OP_IdxLT&1) && (OP_IdxGE&1)==(OP_IdxGT&1) );
if( (pOp->opcode&1)==(OP_IdxLT&1) ){
assert( pOp->opcode==OP_IdxLE || pOp->opcode==OP_IdxLT );
@@ -6037,7 +6060,7 @@ case OP_IdxGE: { /* jump */
res++;
}
VdbeBranchTaken(res>0,2);
if( rc ) goto abort_due_to_error;
assert( rc==SQLITE_OK );
if( res>0 ) goto jump_to_p2;
break;
}