From: Paolo Bonzini <pbonzini@redhat.com>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: qemu-devel@nongnu.org
Subject: Re: [PATCH v2 13/23] target/i386: Introduce DISAS_JUMP
Date: Wed, 21 Sep 2022 14:28:29 +0200 [thread overview]
Message-ID: <CABgObfbduu=N3ZiH2nVNin-6jM-hajmCu6S-DDYmB1ycMtW95w@mail.gmail.com> (raw)
In-Reply-To: <20220906100932.343523-14-richard.henderson@linaro.org>
On Tue, Sep 6, 2022 at 12:09 PM Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Drop the unused dest argument to gen_jr().
> Remove most of the calls to gen_jr, and use DISAS_JUMP.
> Remove some unused loads of eip for lcall and ljmp.
The only use outside i386_tr_tb_stop is here:
static void gen_goto_tb(DisasContext *s, int tb_num, target_ulong eip)
{
target_ulong pc = s->cs_base + eip;
if (translator_use_goto_tb(&s->base, pc)) {
/* jump to same page: we can use a direct jump */
tcg_gen_goto_tb(tb_num);
gen_jmp_im(s, eip);
tcg_gen_exit_tb(s->base.tb, tb_num);
s->base.is_jmp = DISAS_NORETURN;
} else {
/* jump to another page */
gen_jmp_im(s, eip);
gen_jr(s);
}
}
Should it set s->base.is_jmp = DISAS_JUMP instead, so that gen_jr() can be
inlined into i386_tr_tb_stop() and removed completely? If not,
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo
next prev parent reply other threads:[~2022-09-21 12:39 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 10:09 [PATCH v2 00/23] target/i386: pc-relative translation blocks Richard Henderson
2022-09-06 10:09 ` [PATCH v2 01/23] target/i386: Remove pc_start Richard Henderson
2022-09-21 11:49 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 02/23] target/i386: Return bool from disas_insn Richard Henderson
2022-09-06 14:42 ` Philippe Mathieu-Daudé via
2022-09-08 12:14 ` Richard Henderson
2022-09-21 17:51 ` Philippe Mathieu-Daudé via
2022-09-06 10:09 ` [PATCH v2 03/23] target/i386: Remove cur_eip argument to gen_exception Richard Henderson
2022-09-06 14:44 ` Philippe Mathieu-Daudé via
2022-09-21 11:51 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 04/23] target/i386: Remove cur_eip, next_eip arguments to gen_interrupt Richard Henderson
2022-09-06 14:46 ` Philippe Mathieu-Daudé via
2022-09-21 11:51 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 05/23] target/i386: Create gen_update_eip_cur Richard Henderson
2022-09-21 11:58 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 06/23] target/i386: Create gen_update_eip_next Richard Henderson
2022-09-21 12:04 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 07/23] target/i386: Introduce DISAS_EOB* Richard Henderson
2022-09-21 12:05 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 08/23] target/i386: Use DISAS_EOB* in gen_movl_seg_T0 Richard Henderson
2022-09-21 12:09 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 09/23] target/i386: Use DISAS_EOB_NEXT Richard Henderson
2022-09-21 12:25 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 10/23] target/i386: USe DISAS_EOB_ONLY Richard Henderson
2022-09-21 12:10 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 11/23] target/i386: Create cur_insn_len, cur_insn_len_i32 Richard Henderson
2022-09-06 14:49 ` Philippe Mathieu-Daudé via
2022-09-21 12:25 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 12/23] target/i386: Remove cur_eip, next_eip arguments to gen_repz* Richard Henderson
2022-09-21 12:26 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 13/23] target/i386: Introduce DISAS_JUMP Richard Henderson
2022-09-21 12:28 ` Paolo Bonzini [this message]
2022-09-21 23:27 ` Richard Henderson
2022-09-06 10:09 ` [PATCH v2 14/23] target/i386: Truncate values for lcall_real to i32 Richard Henderson
2022-09-21 12:29 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 15/23] target/i386: Create eip_next_* Richard Henderson
2022-09-21 12:34 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 16/23] target/i386: Use DISAS_TOO_MANY to exit after gen_io_start Richard Henderson
2022-09-21 12:38 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 17/23] target/i386: Create gen_jmp_rel Richard Henderson
2022-09-21 13:06 ` Paolo Bonzini
2022-10-01 0:53 ` Richard Henderson
2022-10-01 6:54 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 18/23] target/i386: Use gen_jmp_rel for loop and jecxz insns Richard Henderson
2022-09-21 13:06 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 19/23] target/i386: Use gen_jmp_rel for gen_jcc Richard Henderson
2022-09-21 13:09 ` Paolo Bonzini
2022-10-01 1:04 ` Richard Henderson
2022-10-01 7:03 ` Paolo Bonzini
2022-10-01 13:58 ` Richard Henderson
2022-09-06 10:09 ` [PATCH v2 20/23] target/i386: Use gen_jmp_rel for gen_repz* Richard Henderson
2022-09-21 13:10 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 21/23] target/i386: Use gen_jmp_rel for DISAS_TOO_MANY Richard Henderson
2022-09-21 13:11 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 22/23] target/i386: Create gen_eip_cur Richard Henderson
2022-09-06 14:50 ` Philippe Mathieu-Daudé via
2022-09-21 13:12 ` Paolo Bonzini
2022-09-06 10:09 ` [PATCH v2 23/23] target/i386: Enable TARGET_TB_PCREL Richard Henderson
2022-09-21 13:31 ` Paolo Bonzini
2022-10-01 1:51 ` Richard Henderson
2022-09-21 13:32 ` [PATCH v2 00/23] target/i386: pc-relative translation blocks Paolo Bonzini
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