[Mlir-commits] [mlir] Fix unsupported transpose ops for scalable vectors in LowerVectorTransfer (PR #86163)

[Benjamin Maxwell]

================
@@ -201,12 +205,19 @@ struct TransferWritePermutationLowering
     // Generate new transfer_write operation.
     Value newVec = rewriter.create<vector::TransposeOp>(
         op.getLoc(), op.getVector(), indices);
+
+    auto vectorType = cast<VectorType>(newVec.getType());
+
+    if (vectorType.isScalable() && !*vectorType.getScalableDims().end()) {
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MacDue wrote:

Btw, for this check there's `isLegalVectorType()` here: https://github.com/llvm/llvm-project/blob/main/mlir/lib/Dialect/ArmSME/Transforms/VectorLegalization.cpp#L421-L430

Maybe this could be moved to some general utils?

https://github.com/llvm/llvm-project/pull/86163