| commit | 92a899b6606c06d2705170f0d7d9ab95d4e42d16 | [log] [tgz] |
|---|---|---|
| author | Matt Arsenault <Matthew.Arsenault@amd.com> | Wed Sep 09 17:03:29 2015 +0000 |
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | Wed Sep 09 17:03:29 2015 +0000 |
| tree | bd48ba087acd82fae817f4a15d4e92704a1ef223 | |
| parent | 9a4bcd9558dc15a5eb38207dc85bac3ee3a8332a [diff] |
AMDGPU: Extract full 64-bit subregister and use subregs Instead of extracting both 32-bit components from the 128-bit register. This produces fewer copies and is easier for the copy peephole optimizer to understand and see the actual uses as extracts from a reg_sequence. This avoids needing to handle subregister composing in the PeepholeOptimizer's ValueTracker for this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247162 91177308-0d34-0410-b5e6-96231b3b80d8