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llvm/lib
Stanislav Mekhanoshin 6e6c5e79c9 [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
2019-10-21 19:25:27 +00:00
..
2017-10-16 20:48:19 +00:00