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([2806:102e:18:2efc:c63:85ed:4256:8ad0]) by smtp.gmail.com with ESMTPSA id a7-20020a056808098700b0035c073aa0d8sm5006831oic.18.2022.12.13.13.26.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Dec 2022 13:26:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HrfsNyGJ4cFlPj1QXpR5FkACHHSum2rmLa4iU9J/XqE=; b=gT5v+iVW9Fn1RXwKCtUHljwXk8vzEiKklrXDRW79V5U4duuAxkbmHivJGvar2wKgK/ FIkd6CcsJHmlqi0o8OcPwtE+C0a1V1Q9E0WQZsf9ImCWHiW+2MJ5IMk9rXbb7VCS+/j3 R5VkwLnZXnVPb6V/SK/DFS27xZL7NmHmjm0px7c8CVCXPA9mANCarYWx69s6zsb7xRTW 45rqZ6txKvKZAXxtKVnkP0Cc9RYWJT6Y4lyNJQpwgcVv4lEVmDque3ta5M67fNKlAqrn BMGJWEqNeIlI4swZqmpR/lhalZGI+2HKU3OQJUMFCVZNQX5Libe5JmR9WVFiRv4zKPVb 2T4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=HrfsNyGJ4cFlPj1QXpR5FkACHHSum2rmLa4iU9J/XqE=; b=o8hBfIudfCRSi+KfH+zlXvMcaOBh3O0lX1N9cdqkSxP6+i/50SsUMAQcKD4gCE9Lvw +GeYhpZLyc+aongXKDVo+9t77vTlyp1xDKLPSfH+xN289sGxrKnFkHqyRVzCo7MTc+/4 PLI3ScZkLhlBaR009mjF+0JXreGLmgUHe7otn8GNv9XRRQDPbaWxXgRCa1NwzhL55uDS eGFg9ErfDLq5V8HjKNF0YbkbC5toGjsOitoCSjoKXmnQqgYsURkD2waf/q8IkZ2ab7Wx ivuK+jF3tHhUoTYsD3Xbjl09gY150x/K1RUQCc/W21xC1dLRup4DDwIyRUm97gdWguX5 Zm6w== X-Gm-Message-State: ANoB5pkOCW1k2WxqKXSiAoD8NqX3s5jEObfvVt/AIcayXU/F6I7mwTT/ GWpH+x4RQK1aLiTZ2CQ5RSHqWbh8t96YE3L3KpU= X-Google-Smtp-Source: AA0mqf4X/zSGsmAXbdxDGaodszVgO9YZ3v49Qcu9NJDmD/yhNLEpV3pA9fKUecu2eyyCHOYzfd1MUA== X-Received: by 2002:a54:440a:0:b0:35c:84f:7357 with SMTP id k10-20020a54440a000000b0035c084f7357mr10781756oiw.37.1670966765521; Tue, 13 Dec 2022 13:26:05 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v4 21/27] tcg: Use output_pref wrapper function Date: Tue, 13 Dec 2022 15:25:35 -0600 Message-Id: <20221213212541.1820840-22-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221213212541.1820840-1-richard.henderson@linaro.org> References: <20221213212541.1820840-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::233; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x233.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1670967451319100001 We will shortly have the possibility of more that two outputs, though only for calls (for which preferences are moot). Avoid direct references to op->output_pref[] when possible. Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- include/tcg/tcg.h | 5 +++++ tcg/tcg.c | 34 ++++++++++++++++++---------------- 2 files changed, 23 insertions(+), 16 deletions(-) diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index d430ea10c8..a6310b898f 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -518,6 +518,11 @@ typedef struct TCGOp { /* Make sure operands fit in the bitfields above. */ QEMU_BUILD_BUG_ON(NB_OPS > (1 << 8)); =20 +static inline TCGRegSet output_pref(const TCGOp *op, unsigned i) +{ + return i < ARRAY_SIZE(op->output_pref) ? op->output_pref[i] : 0; +} + typedef struct TCGProfile { int64_t cpu_exec_time; int64_t tb_count1; diff --git a/tcg/tcg.c b/tcg/tcg.c index ccbe947222..d08323db49 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1966,7 +1966,7 @@ static void tcg_dump_ops(TCGContext *s, FILE *f, bool= have_prefs) =20 if (have_prefs) { for (i =3D 0; i < nb_oargs; ++i) { - TCGRegSet set =3D op->output_pref[i]; + TCGRegSet set =3D output_pref(op, i); =20 if (i =3D=3D 0) { ne_fprintf(f, " pref=3D"); @@ -2636,11 +2636,11 @@ static void liveness_pass_1(TCGContext *s) } ts->state =3D TS_DEAD; la_reset_pref(ts); - - /* Not used -- it will be tcg_target_call_oarg_regs[i]= . */ - op->output_pref[i] =3D 0; } =20 + /* Not used -- it will be tcg_target_call_oarg_reg(). */ + memset(op->output_pref, 0, sizeof(op->output_pref)); + if (!(call_flags & (TCG_CALL_NO_WRITE_GLOBALS | TCG_CALL_NO_READ_GLOBALS))) { la_global_kill(s, nb_globals); @@ -2802,7 +2802,9 @@ static void liveness_pass_1(TCGContext *s) ts =3D arg_temp(op->args[i]); =20 /* Remember the preference of the uses that followed. */ - op->output_pref[i] =3D *la_temp_pref(ts); + if (i < ARRAY_SIZE(op->output_pref)) { + op->output_pref[i] =3D *la_temp_pref(ts); + } =20 /* Output args are dead. */ if (ts->state & TS_DEAD) { @@ -2872,7 +2874,7 @@ static void liveness_pass_1(TCGContext *s) =20 set &=3D ct->regs; if (ct->ialias) { - set &=3D op->output_pref[ct->alias_index]; + set &=3D output_pref(op, ct->alias_index); } /* If the combination is not possible, restart. */ if (set =3D=3D 0) { @@ -3539,7 +3541,7 @@ static void tcg_reg_alloc_mov(TCGContext *s, const TC= GOp *op) TCGReg oreg, ireg; =20 allocated_regs =3D s->reserved_regs; - preferred_regs =3D op->output_pref[0]; + preferred_regs =3D output_pref(op, 0); ots =3D arg_temp(op->args[0]); ts =3D arg_temp(op->args[1]); =20 @@ -3656,7 +3658,7 @@ static void tcg_reg_alloc_dup(TCGContext *s, const TC= GOp *op) if (IS_DEAD_ARG(1)) { temp_dead(s, its); } - tcg_reg_alloc_do_movi(s, ots, val, arg_life, op->output_pref[0]); + tcg_reg_alloc_do_movi(s, ots, val, arg_life, output_pref(op, 0)); return; } =20 @@ -3673,7 +3675,7 @@ static void tcg_reg_alloc_dup(TCGContext *s, const TC= GOp *op) tcg_regset_set_reg(allocated_regs, its->reg); } oreg =3D tcg_reg_alloc(s, dup_out_regs, allocated_regs, - op->output_pref[0], ots->indirect_base); + output_pref(op, 0), ots->indirect_base); set_temp_val_reg(s, ots, oreg); } =20 @@ -3792,7 +3794,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCG= Op *op) switch (arg_ct->pair) { case 0: /* not paired */ if (arg_ct->ialias) { - i_preferred_regs =3D op->output_pref[arg_ct->alias_index]; + i_preferred_regs =3D output_pref(op, arg_ct->alias_index); =20 /* * If the input is not dead after the instruction, @@ -3839,7 +3841,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCG= Op *op) * and to identify a few cases where it's not required. */ if (arg_ct->ialias) { - i_preferred_regs =3D op->output_pref[arg_ct->alias_index]; + i_preferred_regs =3D output_pref(op, arg_ct->alias_index); if (IS_DEAD_ARG(i1) && IS_DEAD_ARG(i2) && ts->val_type =3D=3D TEMP_VAL_REG && @@ -3873,7 +3875,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCG= Op *op) =20 case 3: /* ialias with second output, no first input */ tcg_debug_assert(arg_ct->ialias); - i_preferred_regs =3D op->output_pref[arg_ct->alias_index]; + i_preferred_regs =3D output_pref(op, arg_ct->alias_index); =20 if (IS_DEAD_ARG(i) && ts->val_type =3D=3D TEMP_VAL_REG && @@ -3993,10 +3995,10 @@ static void tcg_reg_alloc_op(TCGContext *s, const T= CGOp *op) } else if (arg_ct->newreg) { reg =3D tcg_reg_alloc(s, arg_ct->regs, i_allocated_regs | o_allocated_reg= s, - op->output_pref[k], ts->indirect_b= ase); + output_pref(op, k), ts->indirect_b= ase); } else { reg =3D tcg_reg_alloc(s, arg_ct->regs, o_allocated_reg= s, - op->output_pref[k], ts->indirect_b= ase); + output_pref(op, k), ts->indirect_b= ase); } break; =20 @@ -4007,7 +4009,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCG= Op *op) break; } reg =3D tcg_reg_alloc_pair(s, arg_ct->regs, o_allocated_re= gs, - op->output_pref[k], ts->indirect_= base); + output_pref(op, k), ts->indirect_= base); break; =20 case 2: /* second of pair */ @@ -4090,7 +4092,7 @@ static bool tcg_reg_alloc_dup2(TCGContext *s, const T= CGOp *op) } =20 oreg =3D tcg_reg_alloc(s, dup_out_regs, allocated_regs, - op->output_pref[0], ots->indirect_base); + output_pref(op, 0), ots->indirect_base); set_temp_val_reg(s, ots, oreg); } =20 --=20 2.34.1