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3 Commits

Author SHA1 Message Date
Jingyue Wu 3a04dc6e78 Roll forward r242871 
r242871 missed one place that should be guarded with isPhysicalReg. This patch
fixes that.

llvm-svn: 243555
 2015-07-29 18:59:09 +00:00
Jingyue Wu 7ec38530a5 Temporarily revert r242871 
PR24299

llvm-svn: 243522
 2015-07-29 15:26:11 +00:00
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