| .. _omp190: |
| |
| Redundant barrier eliminated. (device only) |
| ==================================================================== |
| |
| This optimization remark indicates that analysis determined an aligned |
| barrier in the device code to be redundant. This can occur when state |
| updates that have been synchronized by the barrier were eliminated too. |
| See also "Co-Designing an OpenMP GPU Runtime and Optimizations for Near-Zero |
| Overhead Execution", IPDPS'22. |
| |
| Example |
| ------- |
| |
| This optimization will trigger for most target regions if state initialization |
| was removed as a consequence of "state forwarding". This will trigger for |
| internal runtime functions so it requires enabling verbose remarks with |
| `-openmp-opt-verbose-remarks` (prefixed with `-mllvm` for use with clang). |
| |
| Diagnostic Scope |
| ---------------- |
| |
| OpenMP optimization remark. |
