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; RUN: llvm-as < %s | opt -reassociate -instcombine -constprop -dce | llvm-dis | not grep add

define i32 @test(i32 %A) {
	%X = add i32 %A, 1		; <i32> [#uses=1]
	%Y = add i32 %A, 1		; <i32> [#uses=1]
	%r = sub i32 %X, %Y		; <i32> [#uses=1]
	ret i32 %r
}