ret i16 %3
}
+declare i16 @bounded(i16 %input);
+declare i32 @__gxx_personality_v0(...);
+!0 = !{i16 0, i16 32768} ; [0, 32767]
+!1 = !{i16 0, i16 32769} ; [0, 32768]
+
+define i16 @add_bounded_values(i16 %a, i16 %b) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; CHECK-LABEL: @add_bounded_values(
+entry:
+ %c = call i16 @bounded(i16 %a), !range !0
+ %d = invoke i16 @bounded(i16 %b) to label %cont unwind label %lpad, !range !0
+cont:
+; %c and %d are in [0, 32767]. Therefore, %c + %d doesn't unsigned overflow.
+ %e = add i16 %c, %d
+; CHECK: add nuw i16 %c, %d
+ ret i16 %e
+lpad:
+ %0 = landingpad { i8*, i32 }
+ filter [0 x i8*] zeroinitializer
+ ret i16 42
+}
+
+define i16 @add_bounded_values_2(i16 %a, i16 %b) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; CHECK-LABEL: @add_bounded_values_2(
+entry:
+ %c = call i16 @bounded(i16 %a), !range !1
+ %d = invoke i16 @bounded(i16 %b) to label %cont unwind label %lpad, !range !1
+cont:
+; Similar to add_bounded_values, but %c and %d are in [0, 32768]. Therefore,
+; %c + %d may unsigned overflow and we cannot add NUW.
+ %e = add i16 %c, %d
+; CHECK: add i16 %c, %d
+ ret i16 %e
+lpad:
+ %0 = landingpad { i8*, i32 }
+ filter [0 x i8*] zeroinitializer
+ ret i16 42
+}
+
; CHECK-LABEL: @ripple_nsw1
; CHECK: add nsw i16 %a, %b
define i16 @ripple_nsw1(i16 %x, i16 %y) {