| commit | c0f92c94ab2c865d6d77d926bb6bf4f0a9ca2680 | [log] [tgz] |
|---|---|---|
| author | Craig Topper <craig.topper@gmail.com> | Sun Apr 24 04:38:32 2016 +0000 |
| committer | Craig Topper <craig.topper@gmail.com> | Sun Apr 24 04:38:32 2016 +0000 |
| tree | 65e42b3fd27a8efa00b409e9566d9c394bb405db | |
| parent | e5dc889a2bcc6cd1cb7c5a81fb85ca9132ea6cff [diff] |
[CodeGen] Teach DAG combine to fold select_cc seteq X, 0, sizeof(X), ctlz_zero_undef(X) -> ctlz(X). InstCombine already does this for IR and X86 pattern matches this during isel. A follow up commit will remove the X86 patterns to allow this to be tested. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267325 91177308-0d34-0410-b5e6-96231b3b80d8