[all-commits] [llvm/llvm-project] cbe1e6: [Instruction] Introduce getAtomicSyncScopeID()

[Marco Elver via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cbe1e67eade900fa73f29b88ab49fcb6fc29bbb0
      https://github.com/llvm/llvm-project/commit/cbe1e67eade900fa73f29b88ab49fcb6fc29bbb0
  Author: Marco Elver <elver at google.com>
  Date:   2022-03-17 (Thu, 17 Mar 2022)

  Changed paths:
    M llvm/include/llvm/IR/Instructions.h
    M llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp

  Log Message:
  -----------
  [Instruction] Introduce getAtomicSyncScopeID()

An analysis may just be interested in checking if an instruction is
atomic but system scoped or single-thread scoped, like ThreadSanitizer's
isAtomic(). Unfortunately Instruction::isAtomic() can only answer the
"atomic" part of the question, but to also check scope becomes rather
verbose.

To simplify and reduce redundancy, introduce a common helper
getAtomicSyncScopeID() which returns the scope of an atomic operation.
Start using it in ThreadSanitizer.

NFCI.

Reviewed By: dvyukov

Differential Revision: https://reviews.llvm.org/D121910