| commit | 31f94c7c22cbf59753764bc17130dca6a73c0b4e | [log] [tgz] |
|---|---|---|
| author | Evan Cheng <evan.cheng@apple.com> | Tue Mar 09 03:21:12 2010 +0000 |
| committer | Evan Cheng <evan.cheng@apple.com> | Tue Mar 09 03:21:12 2010 +0000 |
| tree | 07c66ab0d3e9a521f8554ea6a196a3873ad91db1 | |
| parent | 81d0c36d22142da8413f8b2483582df70968ecb3 [diff] |
- Make the machine cse dumb coalescer (as opposed to the more awesome simple coalescer) handle sub-register classes. - Add heuristics to avoid non-profitable cse. Given the current lack of live range splitting, avoid cse when an expression has PHI use and the would be new use is in a BB where the expression wasn't already being used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98043 91177308-0d34-0410-b5e6-96231b3b80d8