[all-commits] [llvm/llvm-project] 52b247: [PHIElimination] Handle subranges in LiveInterval ...

[Carl Ritson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 52b247b1d342ac84dc15b1dc67dec66f93a1d18e
      https://github.com/llvm/llvm-project/commit/52b247b1d342ac84dc15b1dc67dec66f93a1d18e
  Author: Carl Ritson <carl.ritson at amd.com>
  Date:   2023-11-13 (Mon, 13 Nov 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/LiveInterval.h
    M llvm/include/llvm/CodeGen/LiveIntervals.h
    M llvm/lib/CodeGen/LiveInterval.cpp
    M llvm/lib/CodeGen/LiveIntervals.cpp
    M llvm/lib/CodeGen/MachineBasicBlock.cpp
    M llvm/lib/CodeGen/PHIElimination.cpp
    M llvm/test/CodeGen/AMDGPU/split-mbb-lis-subrange.mir

  Log Message:
  -----------
  [PHIElimination] Handle subranges in LiveInterval updates (#69429)

Add subrange tracking and handling for LiveIntervals during PHI
elimination.
This requires extending MachineBasicBlock::SplitCriticalEdge to also
update subrange intervals.