%"class.hlsl::RWStructuredBuffer" = type { target("dx.RawBuffer", <4 x i1>, 1, 0) }
Should be
%"class.hlsl::RWStructuredBuffer" = type { target("dx.RawBuffer", <4 x i32>, 1, 0) }a

https://godbolt.org/z/18x3foGxr