1; RUN: opt < %s -instcombine -disable-output
2; PR1594
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4define i64 @test(i16 %tmp510, i16 %tmp512) {
5	%W = sext i16 %tmp510 to i32           ; <i32> [#uses=1]
6        %X = sext i16 %tmp512 to i32           ; <i32> [#uses=1]
7        %Y = add i32 %W, %X               ; <i32> [#uses=1]
8        %Z = sext i32 %Y to i64          ; <i64> [#uses=1]
9	ret i64 %Z
10}
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