Index: llvm/test/CodeGen/ARM/add-sub-imm.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/ARM/add-sub-imm.ll
@@ -0,0 +1,74 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=arm-eabi %s -o - | FileCheck %s --check-prefix=CHECK
+
+; Check how immediates are handled in add/sub.
+
+define i32 @sub0(i32 %0) {
+; CHECK-LABEL: sub0:
+; CHECK:       @ %bb.0:
+; CHECK-NEXT:    sub r0, r0, #23
+; CHECK-NEXT:    mov pc, lr
+  %2 = sub i32 %0, 23
+  ret i32 %2
+}
+
+define i32 @sub1(i32 %0) {
+; CHECK-LABEL: sub1:
+; CHECK:       @ %bb.0:
+; CHECK-NEXT:    ldr r1, .LCPI1_0
+; CHECK-NEXT:    add r0, r0, r1
+; CHECK-NEXT:    mov pc, lr
+; CHECK-NEXT:    .p2align 2
+; CHECK-NEXT:  @ %bb.1:
+; CHECK-NEXT:  .LCPI1_0:
+; CHECK-NEXT:    .long 4294836225 @ 0xfffe0001
+  %2 = sub i32 %0, 131071
+  ret i32 %2
+}
+
+define i32 @sub2(i32 %0) {
+; CHECK-LABEL: sub2:
+; CHECK:       @ %bb.0:
+; CHECK-NEXT:    ldr r1, .LCPI2_0
+; CHECK-NEXT:    add r0, r0, r1
+; CHECK-NEXT:    mov pc, lr
+; CHECK-NEXT:    .p2align 2
+; CHECK-NEXT:  @ %bb.1:
+; CHECK-NEXT:  .LCPI2_0:
+; CHECK-NEXT:    .long 4292664576 @ 0xffdcdd00
+  %2 = sub i32 %0, 2302720
+  ret i32 %2
+}
+
+define i32 @add0(i32 %0) {
+; CHECK-LABEL: add0:
+; CHECK:       @ %bb.0:
+; CHECK-NEXT:    add r0, r0, #23
+; CHECK-NEXT:    mov pc, lr
+  %2 = add i32 %0, 23
+  ret i32 %2
+}
+
+define i32 @add1(i32 %0) {
+; CHECK-LABEL: add1:
+; CHECK:       @ %bb.0:
+; CHECK-NEXT:    ldr r1, .LCPI4_0
+; CHECK-NEXT:    add r0, r0, r1
+; CHECK-NEXT:    mov pc, lr
+; CHECK-NEXT:    .p2align 2
+; CHECK-NEXT:  @ %bb.1:
+; CHECK-NEXT:  .LCPI4_0:
+; CHECK-NEXT:    .long 131071 @ 0x1ffff
+  %2 = add i32 %0, 131071
+  ret i32 %2
+}
+
+define i32 @add2(i32 %0) {
+; CHECK-LABEL: add2:
+; CHECK:       @ %bb.0:
+; CHECK-NEXT:    add r0, r0, #8960
+; CHECK-NEXT:    add r0, r0, #2293760
+; CHECK-NEXT:    mov pc, lr
+  %2 = add i32 %0, 2302720
+  ret i32 %2
+}