[Issue]: [Flang][OpenMP] wrong result with BLOCK in target region

[ye-luo]

Problem Description

I'm testing rocm-afar-6356-drop-4.1.0
Getting incorrect results. see reproducers below.

Operating System

ubuntu 24.04

CPU

Any x86_64

GPU

Any AMD GPU

ROCm Version

ROCm 6.2.3

ROCm Component

No response

Steps to Reproduce

Code https://github.com/ye-luo/openmp-target/blob/master/tests/private/target_local_block.f90

yeluo@epyc-server:~/opt/openmp-target/tests/private$ amdflang -fopenmp target_local_block.f90 && ./a.out
 collect_a expected 20, now =  10
Fortran STOP: code 1

yeluo@epyc-server:~/opt/openmp-target/tests/private$ amdflang -fopenmp --offload-arch=gfx906 target_local_block.f90 && ./a.out
 collect_a expected 20, now =  10
Fortran STOP: code 1

IEEE arithmetic exceptions signaled: INEXACT

(Optional for Linux users) Output of /opt/rocm/bin/rocminfo --support

No response

Additional Information

No response

[ye-luo]

Reported to llvm upstream
llvm#116509