| commit | 697483addf056595c997302f1316cc59244eefaa | [log] [tgz] |
|---|---|---|
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | Wed Dec 15 17:49:52 2010 +0000 |
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | Wed Dec 15 17:49:52 2010 +0000 |
| tree | a6ae1091cc88aba70e4a046276fbf5690c83914d | |
| parent | 521a453721aeefbb6783b6acc8ea36b3c18b4931 [diff] |
Detect and enumerate bypass loops. Bypass loops have the current live range live through, but contain no uses or defs. Splitting around a bypass loop can free registers for other uses inside the loop by spilling the split range. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121871 91177308-0d34-0410-b5e6-96231b3b80d8