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Add DISAS_NORETURN case for nothing more to generate because at runtime execution will never return from some helper call. And at the same time replace DISAS_UPDATE in t_gen_helper_raise_exception and gen_exception with the newly added DISAS_NORETURN. Signed-off-by: Wentong Wu <wentong.wu@intel.com> Message-id: 20200710233433.19729-1-wentong.wu@intel.com Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>