[all-commits] [llvm/llvm-project] 675cfb: [NVPTX] Error on atomics with system scope pre-sm6...

[Yonah Goldberg via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 675cfb91660e20bfc17456f347c01c310322fc9d
      https://github.com/llvm/llvm-project/commit/675cfb91660e20bfc17456f347c01c310322fc9d
  Author: Yonah Goldberg <ygoldberg at nvidia.com>
  Date:   2026-09-11 (Fri, 11 Sep 2026)

  Changed paths:
    M llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
    A llvm/test/CodeGen/NVPTX/atomics-system-scope-sm50.err.ll
    M llvm/test/CodeGen/NVPTX/cmpxchg.ll

  Log Message:
  -----------
  [NVPTX] Error on atomics with system scope pre-sm60 (#222458)

Pre-SM60, atomics could only have device scope.
`NVPTXDAGToDAGISel::getAtomicScope` can conservatively emit device scope
for all scopes that are not system scope. For system scope, we need to
error out.

This resolves a TODO in llvm/test/CodeGen/NVPTX/cmpxchg.ll. Update that
and llvm/test/CodeGen/NVPTX/cmpxchg.ll to use SM60 now, demonstrating
correct lowering for system scope.



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