From: Richard Henderson <richard.henderson@linaro.org>
To: Taylor Simpson <tsimpson@quicinc.com>, qemu-devel@nongnu.org
Cc: ale@rev.ng, bcain@quicinc.com, philmd@redhat.com
Subject: Re: [PATCH v2 04/21] Hexagon (target/hexagon) properly generate TB end for DISAS_NORETURN
Date: Fri, 2 Apr 2021 10:34:06 -0700 [thread overview]
Message-ID: <455e4100-df75-4035-6a1a-2930bc7ab59c@linaro.org> (raw)
In-Reply-To: <1617249213-22667-5-git-send-email-tsimpson@quicinc.com>
On 3/31/21 8:53 PM, Taylor Simpson wrote:
> @@ -601,19 +612,12 @@ static void hexagon_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
> gen_exec_counters(ctx);
> tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], ctx->base.pc_next);
> if (ctx->base.singlestep_enabled) {
> - gen_exception_debug();
> + gen_exception_raw(EXCP_DEBUG);
> } else {
> tcg_gen_exit_tb(NULL, 0);
> }
> break;
Looks like you could call gen_end_tb here. Alternately,
> if (pkt->pkt_has_cof) {
> - ctx->base.is_jmp = DISAS_NORETURN;
> + gen_end_tb(ctx);
> }
ctx->base.is_jmp = DISAS_TOO_MANY;
which will force the exit of the translate loop and land at that case within
tb_stop. At which point you don't need gen_end_tb.
Either way, this is still an improvement.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2021-04-02 17:34 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 3:53 [PATCH v2 00/21] Hexagon (target/hexagon) update Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 01/21] Hexagon (target/hexagon) TCG generation cleanup Taylor Simpson
2021-04-02 17:25 ` Richard Henderson
2021-04-02 17:46 ` Richard Henderson
2021-04-02 19:42 ` Taylor Simpson
2021-04-02 20:00 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 02/21] Hexagon (target/hexagon) remove unnecessary inline directives Taylor Simpson
2021-04-02 17:26 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 03/21] Hexagon (target/hexagon) use env_archcpu and env_cpu Taylor Simpson
2021-04-02 17:27 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 04/21] Hexagon (target/hexagon) properly generate TB end for DISAS_NORETURN Taylor Simpson
2021-04-02 17:34 ` Richard Henderson [this message]
2021-04-01 3:53 ` [PATCH v2 05/21] Hexagon (target/hexagon) decide if pred has been written at TCG gen time Taylor Simpson
2021-04-02 17:44 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 06/21] Hexagon (target/hexagon) change variables from int to bool when appropriate Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 07/21] Hexagon (target/hexagon) remove unused carry_from_add64 function Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 08/21] Hexagon (target/hexagon) change type of softfloat_roundingmodes Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 09/21] Hexagon (target/hexagon) use softfloat default NaN and tininess Taylor Simpson
2021-04-02 17:48 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 10/21] Hexagon (target/hexagon) replace float32_mul_pow2 with float32_scalbn Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 11/21] Hexagon (target/hexagon) use softfloat for float-to-int conversions Taylor Simpson
2021-04-06 20:09 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 12/21] Hexagon (target/hexagon) add F2_sfrecipa instruction Taylor Simpson
2021-04-06 20:30 ` Richard Henderson
2021-04-06 20:46 ` Richard Henderson
2021-04-06 21:55 ` Taylor Simpson
2021-04-06 22:13 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 13/21] Hexagon (target/hexagon) add F2_sfinvsqrta Taylor Simpson
2021-04-06 20:47 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 14/21] Hexagon (target/hexagon) add A5_ACS (vacsh) Taylor Simpson
2021-04-06 20:51 ` Richard Henderson
2021-04-06 21:31 ` Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 15/21] Hexagon (target/hexagon) add A6_vminub_RdP Taylor Simpson
2021-04-06 20:57 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 16/21] Hexagon (target/hexagon) add A4_addp_c/A4_subp_c Taylor Simpson
2021-04-06 21:11 ` Richard Henderson
2021-04-06 21:58 ` Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 17/21] Hexagon (target/hexagon) circular addressing Taylor Simpson
2021-04-06 22:11 ` Richard Henderson
2021-04-07 3:11 ` Taylor Simpson
2021-04-07 16:27 ` Taylor Simpson
2021-04-01 3:53 ` [PATCH v2 18/21] Hexagon (target/hexagon) bit reverse (brev) addressing Taylor Simpson
2021-04-06 22:35 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 19/21] Hexagon (target/hexagon) load and unpack bytes instructions Taylor Simpson
2021-04-06 22:46 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 20/21] Hexagon (target/hexagon) load into shifted register instructions Taylor Simpson
2021-04-06 22:50 ` Richard Henderson
2021-04-01 3:53 ` [PATCH v2 21/21] Hexagon (target/hexagon) CABAC decode bin Taylor Simpson
2021-04-06 22:54 ` Richard Henderson
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