llvm-project

c3811805 - [mlir][AMDGPU] Avoid verifier crash in DPPOp on vector operand types (#178887)

[mlir][AMDGPU] Avoid verifier crash in DPPOp on vector operand types (#178887) ### whats the problem mlir-opt could crash while verifying amdgpu.dpp when its operands had vector types, such as ARM SME tile vectors produced by arm_sme.get_tile. The crash occurred during IR verification, before any lowering or passes ran. ### why it happens DPPOp::verify() called Type::getIntOrFloatBitWidth() on the operand type. When the operand was a VectorType, this hit an assertion because only scalar integer and float types have a bitwidth. ### whats the fix Query the bitwidth on the element type using getElementTypeOrSelf() instead of the container type. Add a regression test to ensure amdgpu.dpp verification no longer asserts on vector operand types. Fixes #178128