| commit | 5f0c658aa40c6d1475f7c9daa72497362fbee216 | [log] [tgz] |
|---|---|---|
| author | Chris Lattner <sabre@nondot.org> | Mon Feb 27 00:22:28 2006 +0000 |
| committer | Chris Lattner <sabre@nondot.org> | Mon Feb 27 00:22:28 2006 +0000 |
| tree | 4ed96d021948ca1234a5c8d7d09ba8698ed6c331 | |
| parent | cfdbb7caa8b1f1b04029a5ea092f523debd862fa [diff] |
Just like we use the RHS of an AND to simplify the LHS, use the LHS to
simplify the RHS. This allows for the elimination of many thousands of
ands from multisource, and compiles CodeGen/PowerPC/and-elim.ll:test2
into this:
_test2:
srwi r2, r3, 1
xori r3, r2, 40961
blr
instead of this:
_test2:
rlwinm r2, r3, 31, 17, 31
xori r2, r2, 40961
rlwinm r3, r2, 0, 16, 31
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26388 91177308-0d34-0410-b5e6-96231b3b80d8