[PATCH] D15157: CodeGen peephole: fold redundant phys reg copies

[JF Bastien via llvm-commits]

jfb updated this revision to Diff 41664.
jfb added a comment.

NFC: rename PhysCopy to ConstPhysCopy

First step in applying qcolombet's suggestion of only applying this optimization
to constant physical register (he suggested to affect non-allocatable only, but
that would include pinned ones too, whereas constant physical registers seem
more conservative).


http://reviews.llvm.org/D15157

Files:
  lib/CodeGen/PeepholeOptimizer.cpp
  test/CodeGen/X86/incdec-and-branch.ll

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