| commit | dbf8b5be977b79a7abd6bbdc38561b3a5164d195 | [log] [tgz] |
|---|---|---|
| author | Michael Liao <michael.liao@intel.com> | Tue Aug 28 03:34:40 2012 +0000 |
| committer | Michael Liao <michael.liao@intel.com> | Tue Aug 28 03:34:40 2012 +0000 |
| tree | a98d4d5ffc5a1ada2a56bd2b0892876d201c04b0 | |
| parent | 325907d0860f8316edcc3bb00bf7b8b04497c177 [diff] |
Fix PR12312 - Add a target-specific DAG optimization to recognize a pattern PTEST-able. Such a pattern is a OR'd tree with X86ISD::OR as the root node. When X86ISD::OR node has only its flag result being used as a boolean value and all its leaves are extracted from the same vector, it could be folded into an X86ISD::PTEST node. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162735 91177308-0d34-0410-b5e6-96231b3b80d8