--- /dev/null
+; RUN: llc < %s -march=avr | FileCheck %s
+
+; This test ensures that the backend can lower returns of struct values.
+; It does not check how these are lowered.
+;
+; In the past, this code used to return an error
+;
+; Assertion `InVals.size() == Ins.size() && "LowerFormalArguments didn't emit the correct number of values!"' failed.
+;
+; This feature was first implemented in r325474.
+
+declare i8 @do_something(i8 %val)
+
+; CHECK-LABEL: main
+define { i1, i8 } @main(i8) #2 {
+entry:
+ %1 = call zeroext i8 @do_something(i8 zeroext %0)
+ %2 = insertvalue { i1, i8 } { i1 true, i8 undef }, i8 %1, 1
+ ret { i1, i8 } %2
+}
+