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d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mEMZJyAsz2pya7wCS7q3Y/mkN8EK0RWNbiEA9tVJa2o=; b=MSlQkxwda2HqwzKkQ87r7FyYQ/WxMCAox2V3870geRrDubRVQOzS6xryXPu54+icKt AT+0HngjIkcSxbKyNXG6Mr4MGUPGHQdXIQiW/Uxp0xBUS9OpRf5Zy0KfRLQtdYIb697Z OK1AM2mC0i6WxpjlEGEgzc4Yo4c+6i1RtuGBkvNrq6IOmdwegX5N0WGKApADBDSY6MvW y2DM7MwIZbm7OhoNo0BVmHlsh0BErDkiRHD2/CfScfOMKzzBh1iBNg/28PkKd75Db7eI axdG7ElfHZoQ4z/FY+vhvlSSVHSPmlOgWtmp9MM8MTGD2n82xDsUVp/+U1UmrIgKGuin Xh3Q== X-Gm-Message-State: AOAM533iYMN5s1N2Y5gyg/xcG67KfCl5TYiXOEJ7kfMenHa5PCHeOeNP Io0KbLam/USAhbMVJ0hBlxB/HpWl616ysg== X-Google-Smtp-Source: ABdhPJwbpkwH/Ey5v5/dI/eAejll310wRfj6G6iNTTLbdeF/3HdJIFg+8gOK6mkathsSiQ2VB5A3Aw== X-Received: by 2002:a17:90b:715:: with SMTP id s21mr1128445pjz.113.1599610638255; Tue, 08 Sep 2020 17:17:18 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 23/43] tcg: Use tcg_constant_i32 with icount expander Date: Tue, 8 Sep 2020 17:16:27 -0700 Message-Id: <20200909001647.532249-24-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200909001647.532249-1-richard.henderson@linaro.org> References: <20200909001647.532249-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; 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That's all we know. 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) We must do this before we adjust tcg_out_movi_i32, lest the under-the-hood poking that we do for icount be broken. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- include/exec/gen-icount.h | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h index 822c43cfd3..404732518a 100644 --- a/include/exec/gen-icount.h +++ b/include/exec/gen-icount.h @@ -34,7 +34,7 @@ static inline void gen_io_end(void) =20 static inline void gen_tb_start(TranslationBlock *tb) { - TCGv_i32 count, imm; + TCGv_i32 count; =20 tcg_ctx->exitreq_label =3D gen_new_label(); if (tb_cflags(tb) & CF_USE_ICOUNT) { @@ -48,15 +48,13 @@ static inline void gen_tb_start(TranslationBlock *tb) offsetof(ArchCPU, env)); =20 if (tb_cflags(tb) & CF_USE_ICOUNT) { - imm =3D tcg_temp_new_i32(); - /* We emit a movi with a dummy immediate argument. Keep the insn i= ndex - * of the movi so that we later (when we know the actual insn coun= t) - * can update the immediate argument with the actual insn count. = */ - tcg_gen_movi_i32(imm, 0xdeadbeef); + /* + * We emit a sub with a dummy immediate argument. Keep the insn in= dex + * of the sub so that we later (when we know the actual insn count) + * can update the argument with the actual insn count. + */ + tcg_gen_sub_i32(count, count, tcg_constant_i32(0)); icount_start_insn =3D tcg_last_op(); - - tcg_gen_sub_i32(count, count, imm); - tcg_temp_free_i32(imm); } =20 tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, tcg_ctx->exitreq_label); @@ -74,9 +72,12 @@ static inline void gen_tb_start(TranslationBlock *tb) static inline void gen_tb_end(TranslationBlock *tb, int num_insns) { if (tb_cflags(tb) & CF_USE_ICOUNT) { - /* Update the num_insn immediate parameter now that we know - * the actual insn count. */ - tcg_set_insn_param(icount_start_insn, 1, num_insns); + /* + * Update the num_insn immediate parameter now that we know + * the actual insn count. + */ + tcg_set_insn_param(icount_start_insn, 2, + tcgv_i32_arg(tcg_constant_i32(num_insns))); } =20 gen_set_label(tcg_ctx->exitreq_label); --=20 2.25.1