--- /dev/null
+; This test shows a few canonicalizations made by deadargelim
+; RUN: llvm-as < %s | opt -deadargelim | llvm-dis > %t
+; This test should remove {} and replace it with void
+; RUN: cat %t | grep {define internal void @test}
+; This test shouls replace the {i32} return value with just i32
+; RUN: cat %t | grep {define internal i32 @test2}
+
+define internal {} @test() {
+ ret {} undef
+}
+
+define internal {i32} @test2() {
+ ret {i32} undef;
+}
+
+define void @caller() {
+ call {} @test()
+ %X = call {i32} @test2();
+ %Y = extractvalue {i32} %X, 0
+ call void @user(i32 %Y, {i32} %X)
+ ret void
+}
+
+declare void @user(i32, {i32})