Update test to accomodate lack of gep duplication within same basic block

Author: Icohedron

llvm/test/CodeGen/DirectX/CBufferAccess/gep-ce-two-uses.ll

@@ -21,6 +21,21 @@ entry:
   %a1 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
   store float %a1, ptr %dst, align 32
 
+  %a2 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
+  store float %a2, ptr %dst, align 32
+
+  ret void
+}
+
+define void @g(ptr %dst) {
+entry:
+  ; CHECK: [[PTR:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
+  ; CHECK: getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR]], i32 16
+  %a1 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
+  store float %a1, ptr %dst, align 32
+  br label %next
+
+next:
   ; CHECK: [[PTR:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
   ; CHECK: getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR]], i32 16
   %a2 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4