1 files changed, 47 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/long_shift.ll b/test/CodeGen/ARM/long_shift.ll
new file mode 100644
index 0000000..76332cc
--- /dev/null
+++ b/test/CodeGen/ARM/long_shift.ll
@@ -0,0 +1,47 @@
+; RUN: llc < %s -march=arm | FileCheck %s
+
+define i64 @f0(i64 %A, i64 %B) {
+; CHECK: f0
+; CHECK:      movs    r3, r3, lsr #1
+; CHECK-NEXT: mov     r2, r2, rrx
+; CHECK-NEXT: subs    r0, r0, r2
+; CHECK-NEXT: sbc     r1, r1, r3
+	%tmp = bitcast i64 %A to i64
+	%tmp2 = lshr i64 %B, 1
+	%tmp3 = sub i64 %tmp, %tmp2
+	ret i64 %tmp3
+}
+
+define i32 @f1(i64 %x, i64 %y) {
+; CHECK: f1
+; CHECK: mov r0, r0, lsl r2
+	%a = shl i64 %x, %y
+	%b = trunc i64 %a to i32
+	ret i32 %b
+}
+
+define i32 @f2(i64 %x, i64 %y) {
+; CHECK: f2
+; CHECK:      mov     r0, r0, lsr r2
+; CHECK-NEXT: rsb     r12, r2, #32
+; CHECK-NEXT: sub     r2, r2, #32
+; CHECK-NEXT: cmp     r2, #0
+; CHECK-NEXT: orr     r0, r0, r1, lsl r12
+; CHECK-NEXT: movge   r0, r1, asr r2
+	%a = ashr i64 %x, %y
+	%b = trunc i64 %a to i32
+	ret i32 %b
+}
+
+define i32 @f3(i64 %x, i64 %y) {
+; CHECK: f3
+; CHECK:      mov     r0, r0, lsr r2
+; CHECK-NEXT: rsb     r12, r2, #32
+; CHECK-NEXT: sub     r2, r2, #32
+; CHECK-NEXT: cmp     r2, #0
+; CHECK-NEXT: orr     r0, r0, r1, lsl r12
+; CHECK-NEXT: movge   r0, r1, lsr r2
+	%a = lshr i64 %x, %y
+	%b = trunc i64 %a to i32
+	ret i32 %b
+}