5c10a3aa7f
Add a totally synthetic situation I came up with while looking at a bug in
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related code.
llvm-svn: 65437
2009-02-25 06:52:48 +00:00
87d5ca083b
add note about sin
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llvm-svn: 65137
2009-02-20 18:42:06 +00:00
3cedd4dc64
add note about possible GEP improvement with fields of size 0.
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llvm-svn: 62925
2009-01-24 19:30:25 +00:00
705ac7082b
add a note
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llvm-svn: 62760
2009-01-22 07:16:03 +00:00
83d2e066c1
Add a README entry noticed while investigating PR3216.
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llvm-svn: 62558
2009-01-20 01:07:33 +00:00
6c2ee50e28
add some more crazy strlen and memcpy stuff I noticed in spec.
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llvm-svn: 61918
2009-01-08 07:34:55 +00:00
7cb3ae0505
add some notes about strlen craziness in eon.
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llvm-svn: 61917
2009-01-08 06:52:57 +00:00
a41422566b
add a note
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llvm-svn: 61513
2008-12-31 00:54:13 +00:00
8a35adf3a5
add some notes for simplifylibcalls optimizations
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llvm-svn: 61385
2008-12-23 20:52:52 +00:00
5d196e64f1
add some more notes.
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llvm-svn: 61033
2008-12-15 08:32:28 +00:00
81ee731852
Add a testcase for GCC PR 23455, which lpre handles now. Add some
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comments about why we're not getting other cases.
llvm-svn: 61032
2008-12-15 07:49:24 +00:00
3c2c36b590
gvn now hoists this load out of the hot non-call path.
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llvm-svn: 61028
2008-12-15 06:34:48 +00:00
56fe52e287
move an entry, add some notes, remove a completed item (IMPLICIT_DEF)
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llvm-svn: 60821
2008-12-10 01:30:48 +00:00
a163568c03
improve a note.
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llvm-svn: 60636
2008-12-07 00:15:10 +00:00
da93063acc
some more PRE/GVN/DSE related notes.
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llvm-svn: 60633
2008-12-06 22:52:12 +00:00
543d6c65fa
some random notes.
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llvm-svn: 60624
2008-12-06 19:28:22 +00:00
0cdc0bbb8a
add a note
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llvm-svn: 60404
2008-12-02 06:32:34 +00:00
85de4b35ca
- Remove the buggy -X/C -> X/-C transform. This isn't valid when X isn't a
...
constant. If X is a constant, then this is folded elsewhere.
- Added a note to Target/README.txt to indicate that we'd like to implement
this when we're able.
llvm-svn: 60399
2008-12-02 05:12:47 +00:00
5b902c5b1e
Implement ((A|B)&1)|(B&-2) -> (A&1) | B transformation. This also takes care of
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permutations of this pattern.
llvm-svn: 60312
2008-12-01 01:07:11 +00:00
de89bc275c
Add instruction combining for ((A&~B)|(~A&B)) -> A^B and all permutations.
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llvm-svn: 60291
2008-11-30 13:52:49 +00:00
9eef421e12
Implement (A&((~A)|B)) -> A&B transformation in the instruction combiner. This
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takes care of all permutations of this pattern.
llvm-svn: 60290
2008-11-30 13:08:13 +00:00
e16c0ff1d3
Moving potential optimizations out of PR2330 into lib/Target/README.txt.
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Hopefully this isn't too much stuff to dump into this file.
llvm-svn: 60285
2008-11-30 07:36:04 +00:00
edd5d3e4e9
Also update the README.
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llvm-svn: 60188
2008-11-27 22:41:45 +00:00
b3dc4ad5b4
Add a synthetic missed optimization.
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llvm-svn: 60186
2008-11-27 22:12:22 +00:00
33986d8f17
move the note to the correct README
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llvm-svn: 58104
2008-10-24 19:23:07 +00:00
fcaae54669
add note about va_arg code on x86 and x86-64
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llvm-svn: 58103
2008-10-24 19:20:05 +00:00
209fc26462
This is now partly done.
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llvm-svn: 57734
2008-10-17 21:39:27 +00:00
9b83197b76
move PR1941 here.
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llvm-svn: 57586
2008-10-15 16:33:52 +00:00
6d275fd6e1
move PR1604 here.
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llvm-svn: 57582
2008-10-15 16:06:03 +00:00
843dacc937
move PR1488 into this file.
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llvm-svn: 57579
2008-10-15 16:02:15 +00:00
117792afec
add a note
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llvm-svn: 57557
2008-10-15 05:53:25 +00:00
f9325e5f67
this case is matched now.
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llvm-svn: 57096
2008-10-05 02:16:12 +00:00
d7dd8b8aeb
add a note
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llvm-svn: 54985
2008-08-19 06:22:16 +00:00
113b336caa
move some more stuff out of my email into readme.txt
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llvm-svn: 54603
2008-08-10 01:14:08 +00:00
4afb010309
add a note
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llvm-svn: 54602
2008-08-10 00:47:21 +00:00
8377c02308
Add a note.
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llvm-svn: 53535
2008-07-14 00:19:59 +00:00
035fe6f716
Peer through sext/zext when looking for not(cmp).
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llvm-svn: 51819
2008-05-31 19:01:33 +00:00
69a51cbd6d
Yay us! Every one of these examples turns into icmp/zext/ret.
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llvm-svn: 51818
2008-05-31 18:20:26 +00:00
1bafa6c886
trip count computation deficiency
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llvm-svn: 51222
2008-05-17 15:37:38 +00:00
9fb8908457
Moved from PR1570.
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llvm-svn: 48965
2008-03-30 19:07:11 +00:00
fd5fe2a83d
add a note.
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llvm-svn: 48583
2008-03-20 04:46:13 +00:00
af8d3c6699
various rotate fun.
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llvm-svn: 48438
2008-03-17 01:47:51 +00:00
d51372aa96
another random note
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llvm-svn: 47831
2008-03-02 19:29:42 +00:00
647c6642e7
Move pr717 to here.
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llvm-svn: 47803
2008-03-02 02:51:40 +00:00
643dce1146
add a note
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llvm-svn: 47720
2008-02-28 17:21:27 +00:00
765be8874d
target-indep codegen memcpy lowering issue.
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llvm-svn: 47705
2008-02-28 05:34:27 +00:00
6bb6a55f01
upgrade some tests.
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llvm-svn: 47280
2008-02-18 18:46:39 +00:00
0fddc34485
Add a note
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llvm-svn: 47279
2008-02-18 18:39:23 +00:00
afb514a7b4
clarify a note
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llvm-svn: 45914
2008-01-12 18:58:46 +00:00
87b0c13104
add some notes.
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llvm-svn: 45854
2008-01-11 06:17:47 +00:00
Nick Lewycky