1 ; RUN: opt < %s -instcombine -S | grep zext 2 ; PR1261. 3 4 define i16 @test(i31 %zzz) { 5 %A = sext i31 %zzz to i32 6 %B = add i32 %A, 16384 7 %C = lshr i32 %B, 15 8 %D = trunc i32 %C to i16 9 ret i16 %D 10 } 11