+; RUN: opt < %s -argpromotion -S | FileCheck %s
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+; CHECK: define internal void @add(i32 %[[THIS1:.*]], i32 %[[THIS2:.*]], i32* noalias %[[SR:.*]])
+define internal void @add({i32, i32}* %this, i32* sret %r) {
+ %ap = getelementptr {i32, i32}, {i32, i32}* %this, i32 0, i32 0
+ %bp = getelementptr {i32, i32}, {i32, i32}* %this, i32 0, i32 1
+ %a = load i32, i32* %ap
+ %b = load i32, i32* %bp
+ ; CHECK: %[[AB:.*]] = add i32 %[[THIS1]], %[[THIS2]]
+ %ab = add i32 %a, %b
+ ; CHECK: store i32 %[[AB]], i32* %[[SR]]
+ store i32 %ab, i32* %r
+ ret void
+}
+
+; CHECK: define void @f()
+define void @f() {
+ ; CHECK: %[[R:.*]] = alloca i32
+ %r = alloca i32
+ %pair = alloca {i32, i32}
+
+ ; CHECK: call void @add(i32 %{{.*}}, i32 %{{.*}}, i32* noalias %[[R]])
+ call void @add({i32, i32}* %pair, i32* sret %r)
+ ret void
+}