`mlir::matchReduction()` accessed `terminatorOp->getOperand(redPos)` without checking that `redPos` is within the terminator's operand count. This caused an assertion failure when the region's block-argument count exceeds the terminator's yield count, e.g. for `linalg.pooling_nhwc_sum` whose kernel region has three block args but yields only one value. Add a bounds check before the operand access so the function returns nullptr gracefully instead of crashing. Fixes #131437
The LLVM Compiler Infrastructure
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This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
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