Matthias Braun d421582e90 ARM: Thumb2 LDRD/STRD supports independent input/output regs
The existing code would unnecessarily break LDRD/STRD apart with
non-adjacent registers, on thumb2 this is not necessary.

Ideally on thumb2 we shouldn't match for ldrd/strd pre-regalloc anymore
as there is not reason to set register hints anymore, changing that is
something for a future patch however.

Differential Revision: http://reviews.llvm.org/D9694

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238795 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-01 23:27:08 +00:00
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