Jingyue Wu 20d73c6cc0 [BranchFolding] do not iterate the aliases of virtual registers ...

Summary:
MCRegAliasIterator only works for physical registers. So, do not run it
on virtual registers.

With this issue fixed, we can resurrect the BranchFolding pass in NVPTX
backend.

Reviewers: jholewinski, bkramer

Subscribers: henryhu, meheff, llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D11174

llvm-svn: 242871

2015-07-22 04:16:52 +00:00

69 KiB

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