[all-commits] [llvm/llvm-project] 657835: [TableGen] Ignore inaccessible memory when checkin...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6578356a4e3e6acd7983c74feab43ac96925894c
      https://github.com/llvm/llvm-project/commit/6578356a4e3e6acd7983c74feab43ac96925894c
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2024-04-26 (Fri, 26 Apr 2024)

  Changed paths:
    M llvm/utils/TableGen/Common/CodeGenDAGPatterns.cpp

  Log Message:
  -----------
  [TableGen] Ignore inaccessible memory when checking pattern flags (#90061)

In the AMDGPU backend we have some cases where we'd like to mark an
intrinsic as IntrInaccessibleMemOnly to model dependencies, but the
corresponding MachineInstrs use uses/defs of a special physical register
to express the same thing. In this case TableGen would complain:

  Pattern doesn't match mayLoad/mayStore = 0

but the error is not useful.



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