1 ; RUN: opt < %s -instcombine -disable-output 2 ; PR1594 3 4 define 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 } 11