+define <4 x float*> @combine_redundant_addrspacecast_types_vector(<4 x i32 addrspace(1)*> %x) nounwind {
+; CHECK-LABEL: @combine_redundant_addrspacecast_types_vector(
+; CHECK-NEXT: bitcast <4 x i32 addrspace(1)*> %x to <4 x float addrspace(1)*>
+; CHECK-NEXT: addrspacecast <4 x float addrspace(1)*> %1 to <4 x float*>
+; CHECK-NEXT: ret
+ %y = addrspacecast <4 x i32 addrspace(1)*> %x to <4 x i32 addrspace(3)*>
+ %z = addrspacecast <4 x i32 addrspace(3)*> %y to <4 x float*>
+ ret <4 x float*> %z
+}
+
+define float addrspace(2)* @combine_addrspacecast_bitcast_1(i32 addrspace(1)* %x) nounwind {
+; CHECK-LABEL: @combine_addrspacecast_bitcast_1(
+; CHECK-NEXT: bitcast i32 addrspace(1)* %x to float addrspace(1)*
+; CHECK-NEXT: addrspacecast float addrspace(1)* %1 to float addrspace(2)*
+; CHECK-NEXT: ret
+ %y = addrspacecast i32 addrspace(1)* %x to i32 addrspace(2)*
+ %z = bitcast i32 addrspace(2)* %y to float addrspace(2)*
+ ret float addrspace(2)* %z
+}
+
+define i32 addrspace(2)* @combine_addrspacecast_bitcast_2(i32 addrspace(1)* %x) nounwind {
+; CHECK-LABEL: @combine_addrspacecast_bitcast_2(
+; CHECK: addrspacecast i32 addrspace(1)* %x to i32 addrspace(2)*
+; CHECK-NEXT: ret
+ %y = addrspacecast i32 addrspace(1)* %x to float addrspace(2)*
+ %z = bitcast float addrspace(2)* %y to i32 addrspace(2)*
+ ret i32 addrspace(2)* %z
+}
+
+define i32 addrspace(2)* @combine_bitcast_addrspacecast_1(i32 addrspace(1)* %x) nounwind {
+; CHECK-LABEL: @combine_bitcast_addrspacecast_1(
+; CHECK: addrspacecast i32 addrspace(1)* %x to i32 addrspace(2)*
+; CHECK-NEXT: ret
+ %y = bitcast i32 addrspace(1)* %x to i8 addrspace(1)*
+ %z = addrspacecast i8 addrspace(1)* %y to i32 addrspace(2)*
+ ret i32 addrspace(2)* %z
+}
+
+define float addrspace(2)* @combine_bitcast_addrspacecast_2(i32 addrspace(1)* %x) nounwind {
+; CHECK-LABEL: @combine_bitcast_addrspacecast_2(
+; CHECK: bitcast i32 addrspace(1)* %x to float addrspace(1)*
+; CHECK: addrspacecast float addrspace(1)* %1 to float addrspace(2)*
+; CHECK-NEXT: ret
+ %y = bitcast i32 addrspace(1)* %x to i8 addrspace(1)*
+ %z = addrspacecast i8 addrspace(1)* %y to float addrspace(2)*
+ ret float addrspace(2)* %z
+}
+
+define float addrspace(2)* @combine_addrspacecast_types(i32 addrspace(1)* %x) nounwind {
+; CHECK-LABEL: @combine_addrspacecast_types(
+; CHECK-NEXT: bitcast i32 addrspace(1)* %x to float addrspace(1)*
+; CHECK-NEXT: addrspacecast float addrspace(1)* %1 to float addrspace(2)*
+; CHECK-NEXT: ret
+ %y = addrspacecast i32 addrspace(1)* %x to float addrspace(2)*
+ ret float addrspace(2)* %y
+}
+
+define <4 x float addrspace(2)*> @combine_addrspacecast_types_vector(<4 x i32 addrspace(1)*> %x) nounwind {
+; CHECK-LABEL: @combine_addrspacecast_types_vector(
+; CHECK-NEXT: bitcast <4 x i32 addrspace(1)*> %x to <4 x float addrspace(1)*>
+; CHECK-NEXT: addrspacecast <4 x float addrspace(1)*> %1 to <4 x float addrspace(2)*>
+; CHECK-NEXT: ret
+ %y = addrspacecast <4 x i32 addrspace(1)*> %x to <4 x float addrspace(2)*>
+ ret <4 x float addrspace(2)*> %y
+}
+
+define i32 @canonicalize_addrspacecast([16 x i32] addrspace(1)* %arr) {
+; CHECK-LABEL: @canonicalize_addrspacecast(
+; CHECK-NEXT: getelementptr inbounds [16 x i32] addrspace(1)* %arr, i32 0, i32 0
+; CHECK-NEXT: addrspacecast i32 addrspace(1)* %{{[a-zA-Z0-9]+}} to i32*
+; CHECK-NEXT: load i32*
+; CHECK-NEXT: ret i32
+ %p = addrspacecast [16 x i32] addrspace(1)* %arr to i32*
+ %v = load i32* %p
+ ret i32 %v
+}
+