--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/Transforms/InstCombine/non-integral-pointers.ll	Fri Nov 25 19:14:25 2016 +0900
@@ -0,0 +1,48 @@
+; RUN: opt -instcombine -S < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:4"
+target triple = "x86_64-unknown-linux-gnu"
+
+define i8 addrspace(4)* @f_0() {
+; CHECK-LABEL: @f_0(
+; CHECK: ret i8 addrspace(4)* getelementptr (i8, i8 addrspace(4)* null, i64 50)
+  %result = getelementptr i8, i8 addrspace(4)* null, i64 50
+  ret i8 addrspace(4)* %result
+}
+
+define i8 addrspace(3)* @f_1() {
+; inttoptr is fine here since addrspace(3) is integral.
+
+; CHECK-LABEL: @f_1(
+; CHECK: ret i8 addrspace(3)* inttoptr (i64 50 to i8 addrspace(3)*)
+  %result = getelementptr i8, i8 addrspace(3)* null, i64 50
+  ret i8 addrspace(3)* %result
+}
+
+define void @f_2(i8 addrspace(4)** %ptr0, i8 addrspace(4)** %ptr1) {
+; It is not okay to convert the load/store pair to load and store
+; integers, since pointers in address space 4 are non-integral.
+
+; CHECK-LABEL: @f_2(
+entry:
+; CHECK:  %val = load i8 addrspace(4)*, i8 addrspace(4)** %ptr0, align 8
+; CHECK:  store i8 addrspace(4)* %val, i8 addrspace(4)** %ptr1, align 8
+; CHECK-NOT: load i64
+; CHECK-NOT: store i64
+  %val = load i8 addrspace(4)*, i8 addrspace(4)** %ptr0
+  store i8 addrspace(4)* %val, i8 addrspace(4)** %ptr1
+  ret void
+}
+
+define void @f_3(i8 addrspace(3)** %ptr0, i8 addrspace(3)** %ptr1) {
+; It *is* okay to convert the load/store pair to load and store
+; integers, since pointers in address space 3 are integral.
+
+; CHECK-LABEL: @f_3(
+entry:
+; CHECK: load i64
+; CHECK:  store i64
+  %val = load i8 addrspace(3)*, i8 addrspace(3)** %ptr0
+  store i8 addrspace(3)* %val, i8 addrspace(3)** %ptr1
+  ret void
+}