2 Commits

Author	SHA1	Message	Date
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
Stanislav Mekhanoshin	6cfc726a65	[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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375297 91177308-0d34-0410-b5e6-96231b3b80d8	2019-10-18 22:48:45 +00:00