46236ee5cf
Switch StringMap from an array of structures to a structure of arrays.
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- -25% memory usage of the main table on x86_64 (was wasted in struct padding).
- no significant performance change.
llvm-svn: 147294
2011-12-27 20:35:07 +00:00
846f95080c
Reset StringMap's NumTombstones on clears and rehashes.
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StringMap was not properly updating NumTombstones after a clear or rehash.
This was not fatal until now because the table was growing faster than
NumTombstones could, but with the previous change of preventing infinite
growth of the table the invariant (NumItems + NumTombstones <= NumBuckets)
stopped being observed, causing infinite loops in certain situations.
Patch by José Fonseca!
llvm-svn: 128567
2011-03-30 18:32:51 +00:00
f587f4419c
Prevent infinite growth of SmallMap instances.
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Rehash but don't grow when full of tombstones.
Patch by José Fonseca!
llvm-svn: 128565
2011-03-30 18:32:44 +00:00
9b43f33620
Change all self assignments X=X to (void)X, so that we can turn on a
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new gcc warning that complains on self-assignments and
self-initializations.
llvm-svn: 122458
2010-12-23 00:58:24 +00:00
ad36e8aceb
Pass StringRef by value.
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llvm-svn: 86251
2009-11-06 10:58:06 +00:00
77668004c4
Move StringMap's string has function into StringExtras.h
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llvm-svn: 84344
2009-10-17 18:21:06 +00:00
5bf72e20eb
Convert StringMap to using StringRef for its APIs.
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- Yay for '-'s and simplifications!
- I kept StringMap::GetOrCreateValue for compatibility purposes, this can
eventually go away. Likewise the StringMapEntry Create functions still follow
the old style.
- NIFC.
llvm-svn: 76888
2009-07-23 18:17:34 +00:00
f3ebc3f3d2
Remove attribution from file headers, per discussion on llvmdev.
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llvm-svn: 45418
2007-12-29 20:36:04 +00:00
c770a0273d
stringmap memory managed with malloc now
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llvm-svn: 35666
2007-04-04 17:24:28 +00:00
adf83a3513
use calloc instead of new/memset, it is more efficient
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llvm-svn: 35644
2007-04-04 00:44:31 +00:00
2376346a8e
Extend StringMap to support being initialized as completely empty. When
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initialized this way, they do not do a malloc to allocate their buckets.
llvm-svn: 35642
2007-04-04 00:29:37 +00:00
64df4ba422
greatly reduce hte default size of stringmap.
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llvm-svn: 35632
2007-04-03 22:15:38 +00:00
77baa56a70
Add support for removing elements out of StringMap.
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llvm-svn: 34185
2007-02-11 20:58:00 +00:00
db08c1bc83
Replace the ugly FindValue method with STL-like find methods.
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llvm-svn: 34183
2007-02-11 19:49:41 +00:00
9521fec8cf
remove support for stringmap visitors now that iterators exist.
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llvm-svn: 34180
2007-02-11 08:22:15 +00:00
e15605ccbf
add support for iterators.
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llvm-svn: 34179
2007-02-11 08:20:35 +00:00
751a42010b
Rename CStringMap -> StringMap, since it now supports nul characters in the
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strings.
llvm-svn: 34064
2007-02-08 19:20:57 +00:00
Benjamin Kramer