[PATCH] D109321: [clang][OpenMP] Fix the bug in codegen for ordered directive

[Peixin Qiao via Phabricator via cfe-commits]

peixin added a comment.

The following test case fails after https://reviews.llvm.org/rGaf000197c4214926bd7d0862d86f89aed5f20da6.

  #include <iostream>
  using namespace std;
  
  int main() {
    float a[10];
    int i, N = 10;
    for (i = 0; i < N; i++)
      a[i] = 0;
  
    #pragma omp simd
    for (i = 0; i < N; i++) {
      #pragma omp ordered simd
      a[i] = a[i-1] + 1.0;
    }
  
    for (i = 0; i < N; i++)
      cout << a[i] << "  ";
    cout << endl;
  }



  $ clang++ -fopenmp simd.cpp && ./a.out
  1  2  3  4  5  6  7  8  9  10
  $ clang++ -fopenmp -O1 simd.cpp && ./a.out
  1  1  1  1  2  1  1  1  2  3

It is fixed by this patch.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109321/new/

https://reviews.llvm.org/D109321