llvm-project

5842a0f7 - [mlir][affine] Bail out when store permutation map has broadcast dimensions (#184618)

[mlir][affine] Bail out when store permutation map has broadcast dimensions (#184618) When the vectorized loop is an outer loop and the store index uses an inner loop's IV (which is invariant w.r.t. the outer loop), makePermutationMap produces a broadcast map (e.g. (d0) -> (0)). A vector.transfer_write with broadcast dimensions is invalid, causing a verifier error. Fix: check for AffineConstantExpr results in the store permutation map and bail out of vectorization, preserving the scalar loop nest. Fixes #131135 Assisted-by: Claude Code