llvm-6502/test/Transforms/DeadArgElim/deadretval.ll

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; RUN: opt < %s -deadargelim -S | not grep DEAD
; Dead arg only used by dead retval
define internal i32 @test(i32 %DEADARG) {
ret i32 %DEADARG
}
define i32 @test2(i32 %A) {
%DEAD = call i32 @test( i32 %A ) ; <i32> [#uses=0]
ret i32 123
}
define i32 @test3() {
%X = call i32 @test2( i32 3232 ) ; <i32> [#uses=1]
%Y = add i32 %X, -123 ; <i32> [#uses=1]
ret i32 %Y
}