| commit | 8ca814c4e0a39e1fcac023f0fb014917da07a796 | [log] [tgz] |
|---|---|---|
| author | Cameron Zwarich <zwarich@apple.com> | Thu Feb 24 10:00:25 2011 +0000 |
| committer | Cameron Zwarich <zwarich@apple.com> | Thu Feb 24 10:00:25 2011 +0000 |
| tree | eaf3b0bf8577f6d22de6532276a3e8333ae0c1bb | |
| parent | 9b6af8de58140566a0e6567508bf906027422e7c [diff] |
Merge information about the number of zero, one, and sign bits of live-out registers at phis. This enables us to eliminate a lot of pointless zexts during the DAGCombine phase. This fixes <rdar://problem/8760114>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126380 91177308-0d34-0410-b5e6-96231b3b80d8