| commit | b3958e80324884e3d1c1e198a50f212bae0c3b77 | [log] [tgz] |
|---|---|---|
| author | Evan Cheng <evan.cheng@apple.com> | Thu Mar 04 01:33:55 2010 +0000 |
| committer | Evan Cheng <evan.cheng@apple.com> | Thu Mar 04 01:33:55 2010 +0000 |
| tree | c3cb03465fd875167d172b27d7383e6a9405eacf | |
| parent | 6b4ae7172529503bd28333f488857c0d4fdc3e39 [diff] |
Look ahead a bit to determine if a physical register def that is not marked dead is really alive. This is necessary to catch a lot of common cse opportunities for targets like x86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97706 91177308-0d34-0410-b5e6-96231b3b80d8