Commit Graph

6 Commits

Author SHA1 Message Date
Benjamin Kramer
7b3f1a21ea Fix some CHECK lines which were ignored by accident.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91214 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-12 09:25:50 +00:00
Nick Lewycky
83e8ec73e1 Generalize this optimization to work on equality comparisons between any two
integers that are constant except for a single bit (the same n-th bit in each).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90646 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 05:00:00 +00:00
Nick Lewycky
55bd8bd6eb Reapply r88830 with a bugfix: this transform only applies to icmp eq/ne. This
fixes part of PR5438.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89639 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 03:17:33 +00:00
Nick Lewycky
feb8018764 Revert r88830 and r88831 which appear to have caused a selfhost buildbot some
grief. I suspect this patch merely exposed a bug else.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88841 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-15 07:47:32 +00:00
Nick Lewycky
052d9cb0a8 Correct typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88831 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-15 06:16:57 +00:00
Nick Lewycky
df772f257f Teach instcombine to look for booleans in wider integers when it encounters a
zext(icmp). It may be able to optimize that away. This fixes one of the cases
in PR5438.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88830 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-15 05:55:17 +00:00