[flang][acc] Use ReducibleType interface on LogicalType (#178253) Introduce a new ReducibleType type interface in the OpenACC dialect that provides a type-aware mechanism for translating OpenACC reduction operators to arith::AtomicRMWKind values. This interface should be attached to value types that can participate in OpenACC reductions. For FIR, implement this interface on fir::LogicalType to handle the AccLand and AccLor reduction operators, which map to arith::AtomicRMWKind::andi and ori respectively.
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