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Author SHA1 Message Date
Matthias Braun 4797ec95e4 RegisterCoalescer: Remap subregister lanemasks before exchanging operands 
Rematerializing and merging into a bigger register class at the same
time, requires the subregister range lanemasks getting remapped to the
new register class.

This fixes http://llvm.org/PR26805

llvm-svn: 262768
 2016-03-05 04:36:13 +00:00
Matt Arsenault d38272b214 AMDGPU: Add failing testcase for register coalescer 
llvm-svn: 261592
 2016-02-22 23:45:42 +00:00