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Size and performance optimization to sqlite3ValueFromExpr()

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FossilOrigin-Name: 945f82bc44c5a431c0fef0d36cf016671d7ade1e
This commit is contained in:
drh 2016-09-29 19:27:16 +00:00
parent 22fa36dc04
commit 42735c7d30
3 changed files with 9 additions and 12 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Clarification\sand\stypo-fixes\sin\scomments.\s\sNo\schanges\sto\scode.
D 2016-09-29T15:53:28.199
C Size\sand\sperformance\soptimization\sto\ssqlite3ValueFromExpr()
D 2016-09-29T19:27:16.222
F Makefile.in 6fd48ffcf7c2deea7499062d1f3747f986c19678
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc 5151cc64c4c05f3455f4f692ad11410a810d937f
@ -459,7 +459,7 @@ F src/vdbeInt.h 581b737c2f6e413c555469480efe31796a71bcad
F src/vdbeapi.c 794f80669e9e3b9b3edc78d80c15968985c7bf21
F src/vdbeaux.c b9772e4134a17f5b42d32761f5119467815c2458
F src/vdbeblob.c 3e82a797b60c3b9fed7b8de8c539ca7607874937
F src/vdbemem.c 07874c2ac7c05f7df1ededc6ec6650c1339b2cad
F src/vdbemem.c 1b8d5b770a9a3c6d8ed3463104a382bffa6f15c2
F src/vdbesort.c 91fda3909326860382b0ca8aa251e609c6a9d62c
F src/vdbetrace.c 41963d5376f0349842b5fc4aaaaacd7d9cdc0834
F src/vtab.c e02cacb5c7ae742631edeb9ae9f53d399f093fd8
@ -1525,7 +1525,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P cc29ddd6be60bdbf107f285c9eb57d5896ebca2d
R 647685f38d2c1b34b7290eda763c0ba3
P e2cd79aa3104c51035bf29c548c322564731b75f
R ced10222d4b6fcbb24f085bf78455885
U drh
Z 99ca7352da532b6b28eade6076b7309c
Z 527ba3ca85dfce0ba6019f348119d7e0

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@ -1 +1 @@
e2cd79aa3104c51035bf29c548c322564731b75f
945f82bc44c5a431c0fef0d36cf016671d7ade1e

7
src/vdbemem.c
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@ -1269,10 +1269,7 @@ static int valueFromExpr(
const char *zNeg = "";
int rc = SQLITE_OK;
if( !pExpr ){
*ppVal = 0;
return SQLITE_OK;
}
assert( pExpr!=0 );
while( (op = pExpr->op)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft;
if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
@ -1396,7 +1393,7 @@ int sqlite3ValueFromExpr(
u8 affinity, /* Affinity to use */
sqlite3_value **ppVal /* Write the new value here */
){
return valueFromExpr(db, pExpr, enc, affinity, ppVal, 0);
return pExpr ? valueFromExpr(db, pExpr, enc, affinity, ppVal, 0) : 0;
}
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4