| commit | 2d4215f75949448d5207ec67b11878741a708fbe | [log] [tgz] |
|---|---|---|
| author | Manman Ren <mren@apple.com> | Sat Jul 07 03:34:46 2012 +0000 |
| committer | Manman Ren <mren@apple.com> | Sat Jul 07 03:34:46 2012 +0000 |
| tree | a41f6d1f7fa6643e1aee92b9aace18b4fc24d03d | |
| parent | 845b4c2f0b2b3f0ec468ac863550b25708279180 [diff] |
X86: Fix optimizeCompare to correctly check safe condition. It is safe if EFLAGS is killed or re-defined. When we are done with the basic block, check whether EFLAGS is live-out. Do not optimize away cmp if EFLAGS is live-out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159888 91177308-0d34-0410-b5e6-96231b3b80d8