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Performance enhancement in the expression walker.

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FossilOrigin-Name: ebccbd96094ac64de39dbd0d220d3a7afd8cd40e
This commit is contained in:
drh 2016-08-10 18:56:32 +00:00
parent f5dbe7f8d8
commit 922802c44e
3 changed files with 15 additions and 17 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Tweaks\sto\spcache1TruncateUnsafe()\sto\smake\sit\sslightly\ssmaller\sand\sfaster\sand\neasier\sto\stest.
D 2016-08-10T15:02:49.189
C Performance\senhancement\sin\sthe\sexpression\swalker.
D 2016-08-10T18:56:32.070
F Makefile.in cfd8fb987cd7a6af046daa87daa146d5aad0e088
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc d66d0395c38571aab3804f8db0fa20707ae4609a
@ -463,7 +463,7 @@ F src/vtab.c 6b3cfaff7e4397739d6b48511e777ca58c6d06d4
F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
F src/wal.c 02eeecc265f6ffd0597378f5d8ae9070b62a406a
F src/wal.h 6dd221ed384afdc204bc61e25c23ef7fd5a511f2
F src/walker.c 0f142b5bd3ed2041fc52d773880748b212e63354
F src/walker.c 2d2cc7fb0f320f7f415215d7247f3c584141ac09
F src/where.c 5c9df42d50888be8274a5a0eb062eb0629869bd3
F src/whereInt.h e5b939701a7ceffc5a3a8188a37f9746416ebcd0
F src/wherecode.c 99707d11907c71d289ee9553d2d1a22f1fd8ba41
@ -1510,7 +1510,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 25d1d02b3ea126ade22b2a72649ae55509aa1777
R 828a3811914080064b74ae479ed3b60e
P 059f4e2efefb7b9deaf539110c19bceaeb10c6ce
R e10ecf5680d55c2be7b6807b82221bef
U drh
Z 4a1a54abd34521e8d97a121a8de840a3
Z 07228f4a19a0e884d96dc70fff71df0f

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18
src/walker.c
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@ -41,17 +41,15 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){
testcase( ExprHasProperty(pExpr, EP_TokenOnly) );
testcase( ExprHasProperty(pExpr, EP_Reduced) );
rc = pWalker->xExprCallback(pWalker, pExpr);
if( rc==WRC_Continue
&& !ExprHasProperty(pExpr,EP_TokenOnly) ){
if( sqlite3WalkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort;
if( sqlite3WalkExpr(pWalker, pExpr->pRight) ) return WRC_Abort;
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort;
}else{
if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort;
}
if( rc || ExprHasProperty(pExpr,EP_TokenOnly) ) return rc & WRC_Abort;
if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort;
if( pExpr->pRight && walkExpr(pWalker, pExpr->pRight) ) return WRC_Abort;
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort;
}else{
if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort;
}
return rc & WRC_Abort;
return WRC_Continue;
}
int sqlite3WalkExpr(Walker *pWalker, Expr *pExpr){
return pExpr ? walkExpr(pWalker,pExpr) : WRC_Continue;