commit 6e6c5e79c99dc0eca108cd4bcaa4e31b9c64ea35
author Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> Mon Oct 21 19:25:27 2019 +0000
committer Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> Mon Oct 21 19:25:27 2019 +0000
tree 33b3712ec7c13b12111df5ebffd301c7aa7b4357
parent b1407138d45ba368aefd73f33ecb25f09432531a

[AMDGPU] Select AGPR in PHI operand legalization

If a PHI defines AGPR legalize its operands to AGPR.
At the moment we can get an AGPR PHI with VGPR operands.
I am not aware of any problems as it seems to be handled
gracefully in RA, but this is not right anyway.

It also slightly decreases VGPR pressure in some cases
because we do not have to a copy via VGPR.

Differential Revision: https://reviews.llvm.org/D69206

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375446 91177308-0d34-0410-b5e6-96231b3b80d8