Add test case with user defined struct

Author: hekota

clang/test/CodeGenHLSL/builtins/RasterizerOrderedStructuredBuffer-elementtype.hlsl

@@ -4,6 +4,11 @@
 // likely change once subscript operators are properly implemented (llvm/llvm-project#95956) 
 // and theinterim field of the contained type is removed.
 
+struct MyStruct {
+  float4 a;
+  int2 b;
+};
+
 // CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer" = type <{ target("dx.RawBuffer", i16, 1, 1)
 // CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer.0" = type <{ target("dx.RawBuffer", i16, 1, 1)
 // CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer.2" = type { target("dx.RawBuffer", i32, 1, 1)
@@ -17,6 +22,7 @@
 // CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer.11" = type { target("dx.RawBuffer", <3 x i32>, 1, 1)
 // CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer.12" = type { target("dx.RawBuffer", <2 x half>, 1, 1)
 // CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer.13" = type { target("dx.RawBuffer", <3 x float>, 1, 1)
+// CHECK: %"class.hlsl::RasterizerOrderedStructuredBuffer.14" = type { target("dx.RawBuffer", %struct.MyStruct = type { <4 x float>, <2 x i32>, [8 x i8] }, 1, 1)
 
 RasterizerOrderedStructuredBuffer<int16_t> BufI16;
 RasterizerOrderedStructuredBuffer<uint16_t> BufU16;
@@ -37,6 +43,7 @@ RasterizerOrderedStructuredBuffer<float3> BufF32x3;
 // TODO: RasterizerOrderedStructuredBuffer<unorm float> BufUNormF32;
 // TODO: RasterizerOrderedStructuredBuffer<snorm double> BufSNormF64;
 // TODO: RasterizerOrderedStructuredBuffer<unorm double> BufUNormF64;
+RasterizerOrderedStructuredBuffer<MyStruct> BufMyStruct;
 
 [numthreads(1,1,1)]
 void main(int GI : SV_GroupIndex) {
@@ -53,6 +60,7 @@ void main(int GI : SV_GroupIndex) {
   BufU32x3[GI] = 0;
   BufF16x2[GI] = 0;
   BufF32x3[GI] = 0;
+  BufMyStruct[GI] = {{0,0,0,0},{0,0}};
 }
 
 // CHECK: !{{[0-9]+}} = !{ptr @BufI16, i32 10, i32 2,