Commit Graph

26 Commits

Author SHA1 Message Date
Benjamin Kramer
6e6a558ebc Add a bad char heuristic to StringRef::find.
Based on Horspool's simplified version of Boyer-Moore. We use a constant-sized table of
uint8_ts to keep cache thrashing low, needles bigger than 255 bytes are uncommon anyways.

The worst case is still O(n*m) but we do a lot better on the average case now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142061 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-15 10:08:31 +00:00
Jakob Stoklund Olesen
7850dd0f25 Fix a bug in compare_numeric().
Thanks to Alexandru Dura and Jonas Paulsson for finding it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140859 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30 17:03:55 +00:00
Lenny Maiorani
6cf081cbe5 Remove bounded StringRef::compare() since nothing but Clang SA was using it and it is just as easy to use StringRef::substr() preceding StringRef::compare() to achieve the same thing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130430 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28 20:20:12 +00:00
Lenny Maiorani
437ef0cfb7 Implements StringRef::compare with bounds. It is behaves similarly to strncmp(). Unit tests also included.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129582 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15 17:56:50 +00:00
Chris Lattner
b3371cdf5e Don't infinitely recurse! Patch by Marius Wachtler!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124366 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27 07:35:27 +00:00
Benjamin Kramer
837bccd052 StringRef::compare_numeric also differed from StringRef::compare for characters > 127.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112189 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-26 15:25:35 +00:00
Benjamin Kramer
0043e35b82 Do unsigned char comparisons in StringRef::compare_lower to be more consistent with compare in corner cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112185 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-26 14:21:08 +00:00
Jakob Stoklund Olesen
160a3bf74d Add StringRef::compare_numeric and use it to sort TableGen register records.
This means that our Registers are now ordered R7, R8, R9, R10, R12, ...
Not R1, R10, R11, R12, R2, R3, ...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104745 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-26 21:47:28 +00:00
Benjamin Kramer
4760467ff2 Silence compiler warning.
warning: comparison between signed and unsigned integer expressions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92359 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31 16:27:13 +00:00
Douglas Gregor
7e54d5b156 Document the edit-distance algorithm used in StringRef, switch it over
to SmallVector, and add a unit test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92340 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31 04:24:34 +00:00
Douglas Gregor
c883ad2dd8 Move the two definitions of operator<< into namespace llvm, so they
will be found by argument-dependent lookup. As with the previous
commit, GCC is allowing ill-formed code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92146 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-24 21:15:37 +00:00
Eli Friedman
d5b1f8a842 Change StringRef::startswith and StringRef::endswith to versions which are a
bit more verbose, but optimize to much shorter code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91817 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-21 06:49:24 +00:00
Benjamin Kramer
49123250ae Reenable Split2 StringRef test with Apple gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89357 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 16:04:41 +00:00
Daniel Dunbar
0d753ec30e "XFAIL" the Split2 StringReft test with Apple gcc, which miscompiles it.
- I plan on fixing/workarounding this, but until then I'd like the bots to stay
   green.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89077 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17 09:29:59 +00:00
Rafael Espindola
20fd4ec8c5 Distinguish "a," from "a". The first one splits into "a" + "" and the second one into
"a" + 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87084 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13 04:55:09 +00:00
Rafael Espindola
c78c0c99a0 Switch to smallvector. Also fix issue with using unsigend for MaxSplit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13 02:18:25 +00:00
Rafael Espindola
5ccac24726 Add a new split method to StringRef that puts the substrings in a vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87058 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13 01:24:40 +00:00
Daniel Dunbar
64066bd8b5 Add From arguments to StringRef search functions, and tweak doxyments.
Also, add unittests for find_first_of and find_first_not_of.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86770 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-11 00:28:53 +00:00
Daniel Dunbar
e65512809a Add StringRef::{rfind, rsplit}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82087 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 22:38:48 +00:00
Daniel Dunbar
323a3e6533 Fix pasto in StringRef::count(char)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79356 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-18 18:34:22 +00:00
Daniel Dunbar
5caba3bcb1 Add StringRef::count({char,StringRef})
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79354 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-18 18:26:35 +00:00
Daniel Dunbar
0ad7f9bb2f StringRef: Add find(char) and find(StringRef).
Also, regroup functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78712 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11 20:47:15 +00:00
Daniel Dunbar
d61918fc68 Add StringRef::{slice, split}, two convenient string operations which are simple
and efficient on a StringRef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77117 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26 03:18:15 +00:00
Daniel Dunbar
dbe77cfa0b Support writing a StringRef to a raw_ostream directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76754 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22 17:13:20 +00:00
Daniel Dunbar
f5fdf73238 Add StringRef::{substr, startswith}.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76559 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21 09:18:49 +00:00
Daniel Dunbar
4cf95d75c6 Add StringRef class, with fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76543 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21 07:28:51 +00:00