| commit | 1fd4e558289771a2d5b70f0da8155e0ba2721a49 | [log] [tgz] |
|---|---|---|
| author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | Fri Dec 20 11:49:48 2013 +0000 |
| committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | Fri Dec 20 11:49:48 2013 +0000 |
| tree | 89d130f91a37796395c0291c1c754e7fd4adb4f9 | |
| parent | 78a613731e39778fd6e4518b7d4738bd0c0de291 [diff] |
[SystemZ] Extend RISBG optimization The handling of ANY_EXTEND and ZERO_EXTEND was too strict. In this context we can treat ZERO_EXTEND in much the same way as an AND and then also handle outermost ZERO_EXTENDs. I couldn't find a test that benefited from the ANY_EXTEND change, but it's more obvious to write it this way once SIGN_EXTEND and ZERO_EXTEND are handled differently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197802 91177308-0d34-0410-b5e6-96231b3b80d8