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3b196f20fb
PPC's use of PEI's virtual-register-based scavenging functionality had redefined the virtual registers (it was non-SSA). Now that PEI supports dealing with instructions with multiple virtual registers, this can be cleanup up to use multiple virtual registers and keep SSA form. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178059 91177308-0d34-0410-b5e6-96231b3b80d8
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