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      1 ; This test shows a few canonicalizations made by deadargelim
      2 ; RUN: opt < %s -deadargelim -S > %t
      3 ; This test should remove {} and replace it with void
      4 ; RUN: cat %t | grep {define internal void @test}
      5 ; This test shouls replace the {i32} return value with just i32
      6 ; RUN: cat %t | grep {define internal i32 @test2}
      7 
      8 define internal {} @test() {
      9   ret {} undef
     10 }
     11 
     12 define internal {i32} @test2() {
     13   ret {i32} undef
     14 }
     15 
     16 define void @caller() {
     17   call {} @test()
     18   %X = call {i32} @test2()
     19   %Y = extractvalue {i32} %X, 0
     20   call void @user(i32 %Y, {i32} %X)
     21   ret void
     22 }
     23 
     24 declare void @user(i32, {i32})
     25