From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A05D2C433EF for ; Thu, 21 Oct 2021 21:25:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5A7436128B for ; Thu, 21 Oct 2021 21:25:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5A7436128B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:35638 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mdfYs-00061F-FH for qemu-devel@archiver.kernel.org; Thu, 21 Oct 2021 17:25:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48652) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mdfGM-0007gv-Vl for qemu-devel@nongnu.org; Thu, 21 Oct 2021 17:06:11 -0400 Received: from mail-pg1-x530.google.com ([2607:f8b0:4864:20::530]:39624) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mdfGJ-0004fg-Fw for qemu-devel@nongnu.org; Thu, 21 Oct 2021 17:06:10 -0400 Received: by mail-pg1-x530.google.com with SMTP id g184so1411012pgc.6 for ; Thu, 21 Oct 2021 14:06:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Fh7DFu4XKWjYbSJ+Cjp1/tLglXpgvD0yDYhrX9eTXV8=; b=cwrbrd1vLRrPJ4CF436y8Z4feyY39mEEUvaL9tG5GDwSAAaROTQM+9hjBpP6g6mnZZ 9mDC5r171qWG85547UfyJaQo0Z4jfWKvq3qtjkDptBEO/vj7NHF3vIvnyIjHb+YvaUzj bQbd0GTFXbUD6y3BjebCk+d7VW2l53nIxGAMC3Gf0j3oU2+qpOl8lwT8qofR5rIuQukx FTmLi4lZJLjRzz8vtN8T8Hw4L9wG5KdX86HHW7mGtkPRIaBt4yZAbD85TH3tfn45ta/C +Wq7Beo7qgB4NyODa9vLosbc+VDCRkUvC0GWNjDSRQsI5soyOVyJWFJXriVpnjrQLFwd E4EQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Fh7DFu4XKWjYbSJ+Cjp1/tLglXpgvD0yDYhrX9eTXV8=; b=U6FIOmhqjH5V9BYXYSpZRXg5Wpfd7KJswkuVtN0k2vOHDZ+dkaB7TPNE7tYVndi6yS E0tIzpR++UKfgTAfeltObz/oNANfdVlKwssOROr8XadNXxPplAzE3ABYoHj50d9otZOO pEBVVn34RJHUBuLGvWFUzMhsb4LZ+h058Je67waIlOgS5QX9dTUhUHHokdLpuT2C5sSH 4+i+EOM38vv5hBTZFqzmZ4Omxd38MJecMv7+WVED4JNXS97psyAwFTJ34lhTKWv12yny j20xG7mq5ume8G1/taRyy811pRKFE5DxebEkSlc5sudpuMl3deRsIDGUMfhJNq9EdEKv imCQ== X-Gm-Message-State: AOAM5339WjYEh/UnyF2moMLdRiAQEsVxeCjXLZYr+nLKdispCN2ng8YZ SoXV334xKBpbb6wFn+iqzGRYYYv337H9pw== X-Google-Smtp-Source: ABdhPJyC45TarsCjs2rT+TLV6TixxtReb/HEdEWooBMRc/XSNjKmvDe3lGXIb4azep/jf6eDsLLwFw== X-Received: by 2002:a05:6a00:1147:b029:3e0:8c37:938e with SMTP id b7-20020a056a001147b02903e08c37938emr8080954pfm.65.1634850364247; Thu, 21 Oct 2021 14:06:04 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id g7sm5981670pgp.17.2021.10.21.14.06.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Oct 2021 14:06:03 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 32/48] tcg/optimize: Split out fold_xi_to_i Date: Thu, 21 Oct 2021 14:05:23 -0700 Message-Id: <20211021210539.825582-33-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211021210539.825582-1-richard.henderson@linaro.org> References: <20211021210539.825582-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::530; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x530.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: luis.pires@eldorado.org.br, alex.bennee@linaro.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Pull the "op r, a, 0 => movi r, 0" optimization into a function, and use it in the outer opcode fold functions. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- tcg/optimize.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index 8dfe8694da..78e2ff5b38 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -695,6 +695,15 @@ static bool fold_const2(OptContext *ctx, TCGOp *op) return false; } +/* If the binary operation has second argument @i, fold to @i. */ +static bool fold_xi_to_i(OptContext *ctx, TCGOp *op, uint64_t i) +{ + if (arg_is_const(op->args[2]) && arg_info(op->args[2])->val == i) { + return tcg_opt_gen_movi(ctx, op, op->args[0], i); + } + return false; +} + /* If the binary operation has both arguments equal, fold to @i. */ static bool fold_xx_to_i(OptContext *ctx, TCGOp *op, uint64_t i) { @@ -763,6 +772,7 @@ static bool fold_add2_i32(OptContext *ctx, TCGOp *op) static bool fold_and(OptContext *ctx, TCGOp *op) { if (fold_const2(ctx, op) || + fold_xi_to_i(ctx, op, 0) || fold_xx_to_x(ctx, op)) { return true; } @@ -1076,7 +1086,11 @@ static bool fold_movcond(OptContext *ctx, TCGOp *op) static bool fold_multiply(OptContext *ctx, TCGOp *op) { - return fold_const2(ctx, op); + if (fold_const2(ctx, op) || + fold_xi_to_i(ctx, op, 0)) { + return true; + } + return false; } static bool fold_mulu2_i32(OptContext *ctx, TCGOp *op) @@ -1738,22 +1752,6 @@ void tcg_optimize(TCGContext *s) continue; } - /* Simplify expression for "op r, a, 0 => movi r, 0" cases */ - switch (opc) { - CASE_OP_32_64_VEC(and): - CASE_OP_32_64_VEC(mul): - CASE_OP_32_64(muluh): - CASE_OP_32_64(mulsh): - if (arg_is_const(op->args[2]) - && arg_info(op->args[2])->val == 0) { - tcg_opt_gen_movi(&ctx, op, op->args[0], 0); - continue; - } - break; - default: - break; - } - /* * Process each opcode. * Sorted alphabetically by opcode as much as possible. -- 2.25.1