[PATCH] D12649: AMDGPU: Extract full 64-bit subregister and use subregs

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
arsenm added a subscriber: llvm-commits.
Herald added a subscriber: arsenm.

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.

http://reviews.llvm.org/D12649

Files:
  lib/Target/AMDGPU/SIInstrInfo.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D12649.34081.patch
Type: text/x-patch
Size: 4280 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20150904/fbf146da/attachment.bin>