| commit | 37f645cb34590ccb20717a914240a0b435b8103c | [log] [tgz] |
|---|---|---|
| author | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | Sat Nov 15 22:56:25 2014 +0000 |
| committer | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | Sat Nov 15 22:56:25 2014 +0000 |
| tree | 58b5030128dfd373a2614d93f46486daa80b90df | |
| parent | 01e39346f33d19473d5586a11624d2ab094c7f8b [diff] |
[DAG] Improved target independent vector shuffle folding logic. This patch teaches the DAGCombiner how to combine shuffles according to rules: shuffle(shuffle(A, Undef, M0), B, M1) -> shuffle(B, A, M2) shuffle(shuffle(A, B, M0), B, M1) -> shuffle(B, A, M2) shuffle(shuffle(A, B, M0), A, M1) -> shuffle(B, A, M2) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222090 91177308-0d34-0410-b5e6-96231b3b80d8