+
+; rdar://12442472
+; We can't do tail call since address of s is passed to the callee and part of
+; s is in caller's local frame.
+define void @f3(%struct.SmallStruct* nocapture byval %s) nounwind optsize {
+; CHECK: f3
+; CHECK: bl _consumestruct
+entry:
+ %0 = bitcast %struct.SmallStruct* %s to i8*
+ tail call void @consumestruct(i8* %0, i32 80) optsize
+ ret void
+}
+
+define void @f4(%struct.SmallStruct* nocapture byval %s) nounwind optsize {
+; CHECK: f4
+; CHECK: bl _consumestruct
+entry:
+ %addr = getelementptr inbounds %struct.SmallStruct* %s, i32 0, i32 0
+ %0 = bitcast i32* %addr to i8*
+ tail call void @consumestruct(i8* %0, i32 80) optsize
+ ret void
+}
+
+; We can do tail call here since s is in the incoming argument area.
+define void @f5(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize {
+; CHECK: f5
+; CHECK: b _consumestruct
+entry:
+ %0 = bitcast %struct.SmallStruct* %s to i8*
+ tail call void @consumestruct(i8* %0, i32 80) optsize
+ ret void
+}
+
+define void @f6(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize {
+; CHECK: f6
+; CHECK: b _consumestruct
+entry:
+ %addr = getelementptr inbounds %struct.SmallStruct* %s, i32 0, i32 0
+ %0 = bitcast i32* %addr to i8*
+ tail call void @consumestruct(i8* %0, i32 80) optsize
+ ret void
+}
+
+declare void @consumestruct(i8* nocapture %structp, i32 %structsize) nounwind