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Loop optimization in the OP_MakeRecord opcode.

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FossilOrigin-Name: 47a61fbd63928021098fbe492283f1afda7c293b3b2706c001192ae4ff1b2cbe
This commit is contained in:
drh 2022-04-01 20:39:40 +00:00
parent 3b8b5be3b7
commit 759e507ce5
3 changed files with 11 additions and 9 deletions
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12
manifest
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@ -1,5 +1,5 @@
C It\sis\snot\snecessary\sto\sde-ephermeralize\sthe\soutput\sregisters\sin\sthe\nOP_ResultRow\sopcode.\s\sOmit\sthat\sstep\sfor\sa\ssize\sreduction\sand\sperformance\nincrease.
D 2022-04-01T20:19:36.366
C Loop\soptimization\sin\sthe\sOP_MakeRecord\sopcode.
D 2022-04-01T20:39:40.291
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -624,7 +624,7 @@ F src/upsert.c 8789047a8f0a601ea42fa0256d1ba3190c13746b6ba940fe2d25643a7e991937
F src/utf.c ee39565f0843775cc2c81135751ddd93eceb91a673ea2c57f61c76f288b041a0
F src/util.c 602fe229f32a96ceccae4f40824129669582096f7c355f53dbac156c9fecef23
F src/vacuum.c 6c38ddc52f0619865c91dae9c441d4d48bf3040d7dc1bc5b22da1e45547ed0b3
F src/vdbe.c c8f0fc516a54aa9c696ca0cd4f54b550ea86ab08bcee70b8982f5e3b0305ab8b
F src/vdbe.c 0e54be9acfe26e68b94d946cbaf0c8dfe94435e8a506f22ad5550ae4db1d7a0c
F src/vdbe.h a1d0e3b934e835e73edd146f2e7c4eadb711b5c9875c18159a57483fd78e550e
F src/vdbeInt.h 22babf1e585ae7e5c49f2e6442969b88f07bdcc3d154164346d25ef4efa3ebf3
F src/vdbeapi.c 5c498998c99667f16cac2519f2fa439fe46acf99a332b0caa73637fc2ab35c22
@ -1945,8 +1945,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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# Remove this line to create a well-formed Fossil manifest.

2
manifest.uuid
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@ -1 +1 @@
8a07745aed1d0a4eead55d43f1923597b12371f307ecf5bc19c5a1db9a107a50
47a61fbd63928021098fbe492283f1afda7c293b3b2706c001192ae4ff1b2cbe

6
src/vdbe.c
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@ -3377,7 +3377,7 @@ case OP_MakeRecord: {
zHdr += putVarint32(zHdr, nHdr);
assert( pData0<=pLast );
pRec = pData0;
do{
while( 1 /*exit-by-break*/ ){
serial_type = pRec->uTemp;
/* EVIDENCE-OF: R-06529-47362 Following the size varint are one or more
** additional varints, one per column. */
@ -3385,7 +3385,9 @@ case OP_MakeRecord: {
/* EVIDENCE-OF: R-64536-51728 The values for each column in the record
** immediately follow the header. */
zPayload += sqlite3VdbeSerialPut(zPayload, pRec, serial_type); /* content */
}while( (++pRec)<=pLast );
if( pRec==pLast ) break;
pRec++;
}
assert( nHdr==(int)(zHdr - (u8*)pOut->z) );
assert( nByte==(int)(zPayload - (u8*)pOut->z) );