[all-commits] [llvm/llvm-project] 5fb59f: AMDGPU/GlobalISel: Assume vcc phis for any vcc input

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5fb59f16e219162f98c78bf938ad2e6bb563567c
      https://github.com/llvm/llvm-project/commit/5fb59f16e219162f98c78bf938ad2e6bb563567c
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-01-04 (Sat, 04 Jan 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-phi-s1.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-phi.mir

  Log Message:
  -----------
  AMDGPU/GlobalISel: Assume vcc phis for any vcc input

This produces more intelligible looking results, more comparabble to
the DAG output in the simplest cases. This is probably wrong in
complex control flow, but RegBankSelect doesn't attempt analyzing if
this is on a masked path for selecting the bank yet.