[llvm] [AMDGPU] Make `getAssumedAddrSpace` return AS1 for pointer kernel arguments (PR #137488)

[Matt Arsenault via llvm-commits]

================
@@ -625,7 +625,7 @@ define amdgpu_ps <4 x float> @image_bvh64_intersect_ray_a16_vgpr_descr(i64 %node
   ret <4 x float> %r
 }
 
-define amdgpu_kernel void @image_bvh_intersect_ray_nsa_reassign(ptr %p_node_ptr, ptr %p_ray, <4 x i32> %tdescr) {
+define amdgpu_kernel void @image_bvh_intersect_ray_nsa_reassign(ptr %p_node_ptr, ptr %p_ray, <4 x i32> inreg %tdescr) {
----------------
arsenm wrote:

These added inregs look unrelated

https://github.com/llvm/llvm-project/pull/137488