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