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