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Speed up OP_Column by eliminating some double handling. (CVS 5490) 

FossilOrigin-Name: 9ebee8401b68a2bcd49dc750ac394258d554b499
This commit is contained in:
danielk1977 2008-07-29 10:18:57 +00:00
parent b5f94870c2
commit 808ec7c0c7
3 changed files with 11 additions and 20 deletions
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14
manifest
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@ -1,5 +1,5 @@
C Re-used\sprepared\sstatement\sfrom\sfts3\scursor.\s\sPreviously,\seach\scall\sto\nfulltextFilter()\sfinalized\sany\sexisting\sprepared\sstatement\sand\nprepared\sa\snew\sone.\s\sIn\sthe\scase\swhere\sidxNum\shas\snot\schanged,\ssimply\nreseting\sthe\sstatement\ssuffices.\s\sThis\sprovides\san\sorder\sof\smagnitude\nspeedup\sin\sincoming\sjoins\sagainst\sdocid.\s(CVS\s5489)
D 2008-07-29T01:13:02
C Speed\sup\sOP_Column\sby\seliminating\ssome\sdouble\shandling.\s(CVS\s5490)
D 2008-07-29T10:18:57
F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
F Makefile.in bbb62eecc851379aef5a48a1bf8787eb13e6ec06
F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@ -183,7 +183,7 @@ F src/update.c 79b77a3cc8ed5f8903a7f37055fcedd69388dcae
F src/utf.c 8d52f620a7153d90b058502124fe51d821fcdf57
F src/util.c afe659ccc05d1f8af9e8631dabfec3ee3a7144af
F src/vacuum.c ef342828002debc97514617af3424aea8ef8522c
F src/vdbe.c 40b188e5bed3d942596471fb5cb526a6516ebcec
F src/vdbe.c 78171c3fbaff3f8880012ef5eda9f862fdca936c
F src/vdbe.h c46155c221418bea29ee3a749d5950fcf85a70e2
F src/vdbeInt.h 1672cc137eb1d693090a17ded6682927fc851ca9
F src/vdbeapi.c 25dd01c8b12978c14ec30e9a50666b23da767b27
@ -612,7 +612,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
F tool/speedtest8.c 1dbced29de5f59ba2ebf877edcadf171540374d1
F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
P e48f9697e9fea339e150ddc32940760027dd07d9
R 680fb3be123f951c8c77ef4a340cd813
U shess
Z b0abfd8b0f9f50c33d751a3bf926e781
P a08a5f2b1256b8a93beca5a359ccfc28d403efa3
R a7499bda8c41a215bbe4914ecbc38de9
U danielk1977
Z 456c2aa59ad21c3fb5c40ca8af561e84

2
manifest.uuid
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@ -1 +1 @@
a08a5f2b1256b8a93beca5a359ccfc28d403efa3
9ebee8401b68a2bcd49dc750ac394258d554b499

15
src/vdbe.c
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@ -43,7 +43,7 @@
** in this file for details. If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.766 2008/07/28 19:34:54 drh Exp $
** $Id: vdbe.c,v 1.767 2008/07/29 10:18:57 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@ -2155,17 +2155,8 @@ case OP_Column: {
if( aOffset[p2] ){
assert( rc==SQLITE_OK );
if( zRec ){
if( pDest->flags&MEM_Dyn ){
sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], &sMem);
sMem.db = db;
rc = sqlite3VdbeMemCopy(pDest, &sMem);
assert( !(sMem.flags&MEM_Dyn) );
if( rc!=SQLITE_OK ){
goto op_column_out;
}
}else{
sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], pDest);
}
sqlite3VdbeMemReleaseExternal(pDest);
sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], pDest);
}else{
len = sqlite3VdbeSerialTypeLen(aType[p2]);
sqlite3VdbeMemMove(&sMem, pDest);