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* Roll forward r242871Jingyue Wu2015-07-291-0/+40
| | | | | | | r242871 missed one place that should be guarded with isPhysicalReg. This patch fixes that. llvm-svn: 243555
* Temporarily revert r242871Jingyue Wu2015-07-291-24/+0
| | | | | | PR24299 llvm-svn: 243522
* [BranchFolding] do not iterate the aliases of virtual registersJingyue Wu2015-07-221-0/+24
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
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