[all-commits] [llvm/llvm-project] 612f8e: seq_cst is allowed in Flush since OpenMP 5.1. (#11...

[ShashwathiNavada via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 612f8ec7ac5dcddd16fb027aad64e2e353faa528
      https://github.com/llvm/llvm-project/commit/612f8ec7ac5dcddd16fb027aad64e2e353faa528
  Author: ShashwathiNavada <shashwathinavada at gmail.com>
  Date:   2024-11-25 (Mon, 25 Nov 2024)

  Changed paths:
    M clang/docs/OpenMPSupport.rst
    M clang/include/clang/AST/OpenMPClause.h
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/Sema/SemaOpenMP.cpp
    M clang/test/OpenMP/flush_ast_print.cpp
    M clang/test/OpenMP/flush_codegen.cpp
    M clang/test/OpenMP/flush_messages.cpp
    A flang/test/Lower/OpenMP/Todo/flush-seq-cst.f90
    M flang/test/Semantics/OpenMP/clause-validity01.f90
    M flang/test/Semantics/OpenMP/flush02.f90
    M llvm/include/llvm/Frontend/OpenMP/OMP.td

  Log Message:
  -----------
  seq_cst is allowed in Flush since OpenMP 5.1. (#114072)

This PR adds support seq_cst (sequential consistency) clause for the
flush directive in OpenMP. The seq_cst clause enforces a stricter memory
ordering, ensuring that all threads observe the memory effects of the
flush in the same order, improving consistency in memory operations
across threads.

---------

Co-authored-by: Shashwathi N <nshashwa at pe28vega.hpc.amslabs.hpecorp.net>
Co-authored-by: CHANDRA GHALE <chandra.nitdgp at gmail.com>



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