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Commit 32bd7571 authored by Alexander Timofeev's avatar Alexander Timofeev
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PEI should be able to use backward walk in replaceFrameIndicesBackward. 

The backward register scavenger has correct register
liveness information. PEI should leverage the backward register scavenger.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D137574
parent 244105f7
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