-; XFAIL: *
-; this will match as "sub" until we get register shifting
-
-; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep {rsb\\W*r\[0-9\],\\W*r\[0-9\],\\W*r\[0-9\]*} | count 1
+; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s
define i32 @f1(i32 %a, i32 %b) {
- %tmp = sub i32 %b, %a
- ret i32 %tmp
+ %tmp = shl i32 %b, 5
+ %tmp1 = sub i32 %tmp, %a
+ ret i32 %tmp1
+}
+; CHECK-LABEL: f1:
+; CHECK: rsb r0, r0, r1, lsl #5
+
+define i32 @f2(i32 %a, i32 %b) {
+ %tmp = lshr i32 %b, 6
+ %tmp1 = sub i32 %tmp, %a
+ ret i32 %tmp1
+}
+; CHECK-LABEL: f2:
+; CHECK: rsb r0, r0, r1, lsr #6
+
+define i32 @f3(i32 %a, i32 %b) {
+ %tmp = ashr i32 %b, 7
+ %tmp1 = sub i32 %tmp, %a
+ ret i32 %tmp1
+}
+; CHECK-LABEL: f3:
+; CHECK: rsb r0, r0, r1, asr #7
+
+define i32 @f4(i32 %a, i32 %b) {
+ %l8 = shl i32 %a, 24
+ %r8 = lshr i32 %a, 8
+ %tmp = or i32 %l8, %r8
+ %tmp1 = sub i32 %tmp, %a
+ ret i32 %tmp1
}
+; CHECK-LABEL: f4:
+; CHECK: rsb r0, r0, r0, ror #8