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; This test sees if return values (and arguments) are properly removed when they
; are unused. All unused values are typed i16, so we can easily check. We also
; run instcombine to fold insert/extractvalue chains and we run dce to clean up
; any remaining dead stuff.
; RUN: llvm-as < %s | opt -deadargelim -instcombine -dce | llvm-dis | not grep i16
; XFAIL: *
define internal {i16, i32} @test(i16 %DEADARG) {
%A = insertvalue {i16,i32} undef, i16 1, 0
%B = insertvalue {i16,i32} %A, i32 1001, 1
ret {i16,i32} %B
}
define internal {i32, i16} @test2() {
%DEAD = call i16 @test4()
%A = insertvalue {i32,i16} undef, i32 1, 0
%B = insertvalue {i32,i16} %A, i16 %DEAD, 1
ret {i32,i16} %B
}
define internal i32 @test3(i16 %A) {
%ret = call {i16, i32} @test( i16 %A ) ; <i32> [#uses=0]
%DEAD = extractvalue {i16, i32} %ret, 0
%LIVE = extractvalue {i16, i32} %ret, 1
ret i32 %LIVE
}
define internal i16 @test4() {
ret i16 0
}
define i32 @main() {
%ret = call {i32, i16} @test2() ; <i32> [#uses=1]
%LIVE = extractvalue {i32, i16} %ret, 0
%DEAD = extractvalue {i32, i16} %ret, 1
%Y = add i32 %LIVE, -123 ; <i32> [#uses=1]
%LIVE2 = call i32 @test3(i16 %DEAD) ; <i32> [#uses=1]
%Z = add i32 %LIVE2, %Y ; <i32> [#uses=1]
ret i32 %Z
}
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