[all-commits] [llvm/llvm-project] 97e16d: [OpenMP] Use simple VLA implementation to replace ...

[Shilei Tian via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 97e16da450e94c92456fa5a74768ec1b22fe6b63
      https://github.com/llvm/llvm-project/commit/97e16da450e94c92456fa5a74768ec1b22fe6b63
  Author: Shilei Tian <i at tianshilei.me>
  Date:   2023-11-28 (Tue, 28 Nov 2023)

  Changed paths:
    M openmp/runtime/src/kmp_gsupport.cpp
    M openmp/runtime/src/kmp_runtime.cpp
    A openmp/runtime/src/kmp_utils.h

  Log Message:
  -----------
  [OpenMP] Use simple VLA implementation to replace uses of actual VLA

Use of VLA can cause compile warning that was introduced in D156565. This patch
implements a simple stack/heap-based VLA that can miminc the behavior of an
actual VLA and prevent the warning. By default the stack accomodates the
elements. If the number of emelements is greater than N, which by default is 8,
a heap buffer will be allocated and used to acccomodate the elements.