[PATCH] D15157: CodeGen peephole: fold redundant phys reg copies
JF Bastien via llvm-commits
llvm-commits at lists.llvm.org
Wed Dec 2 13:28:11 PST 2015
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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