Re: [Qemu-arm] [PATCH v2 4/5] target/arm: use DISAS_JUMP for ISB handling

[Richard Henderson]

On 07/10/2017 09:21 AM, Alex Bennée wrote:
> -        s->is_jmp = DISAS_UPDATE;
> +        gen_a64_set_pc_im(s->pc);
> +        s->is_jmp = DISAS_JUMP;

Better would be gen_goto_tb.  The destination is known, so there's no need to 
go through lookup_and_goto_ptr.  You still get the icount_decr check at the 
start of the linked TB, which is what you're looking for.

Interesting that a64's gen_goto_tb sets is_jmp, but a32 does not...


r~