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Commit 28d76692 authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Use an IndexedMap for LiveVariables::VirtRegInfo. 

Provide MRI::getNumVirtRegs() and TRI::index2VirtReg() functions to allow
iteration over virtual registers without depending on the representation of
virtual register numbers.

llvm-svn: 123098
parent a1e03cfb
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