| commit | 2c63566e406974caa70ee27f35af28112e80f951 | [log] [tgz] |
|---|---|---|
| author | Dan Gohman <gohman@apple.com> | Fri Oct 30 22:39:04 2009 +0000 |
| committer | Dan Gohman <gohman@apple.com> | Fri Oct 30 22:39:04 2009 +0000 |
| tree | 035e676c111fbdc4696a12f296c0f375696b99ff | |
| parent | 3821176b2eb9fe5e66929f3df6f204fa6cb2e4d6 [diff] |
Teach SimplifyCFG how to eliminate duplicate PHI nodes within a block. This reduces codesize on a variety of codes by 1-2% on x86-64. It also helps clean up after SSAUpdater. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85626 91177308-0d34-0410-b5e6-96231b3b80d8