[all-commits] [llvm/llvm-project] a38fc1: NVPTX: Drop LiveVariables from the register alloca...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/nvptx/drop-livevariables
  Home:   https://github.com/llvm/llvm-project
  Commit: a38fc12ed603dab97297a2fd314f0089c31a39f6
      https://github.com/llvm/llvm-project/commit/a38fc12ed603dab97297a2fd314f0089c31a39f6
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-28 (Mon, 28 Sep 2026)

  Changed paths:
    M llvm/lib/Target/NVPTX/NVPTXCodeGenPassBuilder.cpp
    M llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
    M llvm/test/CodeGen/NVPTX/llc-pipeline-npm.ll

  Log Message:
  -----------
  NVPTX: Drop LiveVariables from the register allocation pipeline

The optimized RegAlloc pipeline ran LiveVariables only to satisfy PHIElimination
and TwoAddressInstruction, both of which no longer need it. Remove the
LiveVariables run (and, in the new pass manager, the UnreachableMachineBlockElim
that was there only as a LiveVariables prerequisite).

Co-authored-by: Claude (Claude-Opus-4.8)



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications