[llvm-bugs] [Bug 49021] New: hierarchical parallelism hangs

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=49021

            Bug ID: 49021
           Summary: hierarchical parallelism hangs
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Clang Compiler Support
          Assignee: unassignedclangbugs at nondot.org
          Reporter: xw111luoye at gmail.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 24479
  --> https://bugs.llvm.org/attachment.cgi?id=24479&action=edit
test source code

Jan 26 84c6f325840d363c6f3de2091771065234ce4146 works fine
Feb 03 e59d336e75f4670b1a702c2281b3fed27ba4c426 fails

clang++ -fopenmp -fopenmp-targets=nvptx64 -O3 test_omp_offload_reduction.cpp 
./a.out # hangs

-O2 works always fine.

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