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A new implementation of sqlite3VdbeMakeLabel() is faster and makes fewer

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memory allocations by deferring memory allocation until 
sqlite3VdbeResolveLabel() is called, at which point the code generator has
a better idea of how big the relocation table needs to be.
The sqlite3VdbeMakeLabel() routine now takes a Parse* parameter instead of
Vdbe*.

FossilOrigin-Name: 4a0929ac76d8aa5dd65eac3b83d6bbf41e505e01d175ca0fb2b19ba02d439415
This commit is contained in:
drh
2018-12-29 02:26:59 +00:00
parent 81f9159b5e
commit ec4ccdbcb1
17 changed files with 112 additions and 104 deletions
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src/vdbe.h
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@@ -230,7 +230,7 @@ void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type);
void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
void sqlite3VdbeUsesBtree(Vdbe*, int);
VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
int sqlite3VdbeMakeLabel(Vdbe*);
int sqlite3VdbeMakeLabel(Parse*);
void sqlite3VdbeRunOnlyOnce(Vdbe*);
void sqlite3VdbeReusable(Vdbe*);
void sqlite3VdbeDelete(Vdbe*);