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Simplification, performance improvement, and size reduction in the

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codeAllEqualityTerms() function of the code generator.

FossilOrigin-Name: 4fbe02651e877e442d62308d7f607e503695104cd71c5565132fcd1398c120df
This commit is contained in:
drh 2023-05-17 16:13:48 +00:00
parent 60fd5c34ab
commit 653882ed8c
3 changed files with 8 additions and 11 deletions
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@ -1,5 +1,5 @@
C New\sassert()\sstatements\sto\sverify\sthat\sExpr.iColumn\sis\snever\sused\sas\san\narray\sindex\swhen\sits\svalue\sis\snegative.
D 2023-05-17T15:46:46.228
C Simplification,\sperformance\simprovement,\sand\ssize\sreduction\sin\sthe\ncodeAllEqualityTerms()\sfunction\sof\sthe\scode\sgenerator.
D 2023-05-17T16:13:48.064
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
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F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -723,7 +723,7 @@ F src/wal.h c3aa7825bfa2fe0d85bef2db94655f99870a285778baa36307c0a16da32b226a
F src/walker.c f890a3298418d7cba3b69b8803594fdc484ea241206a8dfa99db6dd36f8cbb3b
F src/where.c b74a83b4c8f65b218c5c1c8d9122433f85ee1300fd9263ba1697d0e1040eeb36
F src/whereInt.h e25203e5bfee149f5f1225ae0166cfb4f1e65490c998a024249e98bb0647377c
F src/wherecode.c b300db0bcd84ad6c2642bf3f509f92fad7b7d697b9856b64dd66d692d184d054
F src/wherecode.c e63b522e780e92ed80b5e278e88f54e1166cafa272d2e06cd36297478f44bce2
F src/whereexpr.c 22cf19b0ececeaf838daed1039c5231a8778784eba5ad67b991442a23473fd3f
F src/window.c e075ea85bea322e30e361fa6e69eddba74f461e99e2a564dc09973f8a1fb27d9
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
@ -2070,8 +2070,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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# Remove this line to create a well-formed Fossil manifest.

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@ -1 +1 @@
6084c5fb6d3fcedf35cd6c597a44ec7bf8b4a2576c7b277e5342d2a7905318e7
4fbe02651e877e442d62308d7f607e503695104cd71c5565132fcd1398c120df

5
src/wherecode.c
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@ -812,7 +812,7 @@ static int codeAllEqualityTerms(
/* Figure out how many memory cells we will need then allocate them.
*/
regBase = pParse->nMem + 1;
nReg = pLoop->u.btree.nEq + nExtraReg;
nReg = nEq + nExtraReg;
pParse->nMem += nReg;
zAff = sqlite3DbStrDup(pParse->db,sqlite3IndexAffinityStr(pParse->db,pIdx));
@ -859,9 +859,6 @@ static int codeAllEqualityTerms(
sqlite3VdbeAddOp2(v, OP_Copy, r1, regBase+j);
}
}
}
for(j=nSkip; j<nEq; j++){
pTerm = pLoop->aLTerm[j];
if( pTerm->eOperator & WO_IN ){
if( pTerm->pExpr->flags & EP_xIsSelect ){
/* No affinity ever needs to be (or should be) applied to a value