| commit | 8370d38adee63b3a4d87bfe81be4aacc55fe7cda | [log] [tgz] |
|---|---|---|
| author | Bill Wendling <isanbard@gmail.com> | Wed May 28 22:54:52 2008 +0000 |
| committer | Bill Wendling <isanbard@gmail.com> | Wed May 28 22:54:52 2008 +0000 |
| tree | 4689ca3c0b6ee971d3aef6ec8536642eefb377a8 | |
| parent | a8db14796b22ba7798ef94fc831d56c8a11d4e2a [diff] |
Add a flag to indicate that an instruction is as cheap (or cheaper) than a move instruction to execute. This can be used for transformations (like two-address conversion) to remat an instruction instead of generating a "move" instruction. The idea is to decrease the live ranges and register pressure and all that jazz. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51660 91177308-0d34-0410-b5e6-96231b3b80d8