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Commit 0fab220e authored by Stanislav Mekhanoshin's avatar Stanislav Mekhanoshin
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[AMDGPU] move PHI nodes to AGPR class 

If all uses of a PHI are in AGPR register class we should
avoid unneeded copies via VGPRs.

Differential Revision: https://reviews.llvm.org/D69200

llvm-svn: 375297
parent 0b7f320c
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