| commit | 810572205c9702e0c42f76e68287e0d97273945a | [log] [tgz] |
|---|---|---|
| author | Craig Topper <craig.topper@intel.com> | Fri Feb 09 23:32:27 2018 +0000 |
| committer | Craig Topper <craig.topper@intel.com> | Fri Feb 09 23:32:27 2018 +0000 |
| tree | 2bdc7e5e0e2e0dbb325d32b68ddb2fe92975bfbd | |
| parent | cf46f9ffb97229db8cfc5c6c7cc852b830746440 [diff] |
[X86] Teach lower1BitVectorShuffle to recognize shuffles that are just filling upper elements with zero. Replace with insert_subvector. There's still some extra kshifts in one of the modified test cases here, but hopefully that's only a DAG combine away. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324782 91177308-0d34-0410-b5e6-96231b3b80d8