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Replace bitwise looping with bytewise looping in hemdistsign and

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sizebitvec of tsearch2, as well as identical code in several other
contrib modules.  This provided about a 20X speedup in building a
large tsearch2 index ... didn't try to measure its effects for other
operations.  Thanks to Stephan Vollmer for providing a test case.
This commit is contained in:
Tom Lane
2006-01-20 22:46:40 +00:00
parent 4a651c9705
commit 4977c2b31b
8 changed files with 100 additions and 82 deletions
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5
contrib/intarray/_int.h
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@ -68,11 +68,6 @@ typedef char *BITVECP;
a;\
}
#define LOOPBIT(a) \
for(i=0;i<SIGLENBIT;i++) {\
a;\
}
/* beware of multiple evaluation of arguments to these macros! */
#define GETBYTE(x,i) ( *( (BITVECP)(x) + (int)( (i) / BITBYTE ) ) )
#define GETBITBYTE(x,i) ( (*((char*)(x)) >> (i)) & 0x01 )