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; RUN: llvm-as < %s | opt -load-vn -gcse -instcombine | llvm-dis | grep sub
define i32 @test(i32* %P) {
%X = volatile load i32* %P ; <i32> [#uses=1]
%Y = volatile load i32* %P ; <i32> [#uses=1]
%Z = sub i32 %X, %Y ; <i32> [#uses=1]
ret i32 %Z
}
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