[all-commits] [llvm/llvm-project] 1cf3d6: VirtRegMap: Add pass option to not clear virt regs

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1cf3d68f9731199b3f753c5a87826c40a4d2168b
      https://github.com/llvm/llvm-project/commit/1cf3d68f9731199b3f753c5a87826c40a4d2168b
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2021-04-29 (Thu, 29 Apr 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/Passes.h
    M llvm/lib/CodeGen/VirtRegMap.cpp

  Log Message:
  -----------
  VirtRegMap: Add pass option to not clear virt regs

In a future change it will be possible to run register
allocation with a specific set of register classes,
so some of the remaining virtual registers will still
be meaningful.