From patchwork Sun Sep 8 02:26:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 13795315 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id F0C2DECE577 for ; Sun, 8 Sep 2024 02:28:36 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sn7dW-0003Pv-QX; Sat, 07 Sep 2024 22:26:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sn7dU-0003GG-QB for qemu-devel@nongnu.org; Sat, 07 Sep 2024 22:26:44 -0400 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sn7dT-00051L-A6 for qemu-devel@nongnu.org; Sat, 07 Sep 2024 22:26:44 -0400 Received: by mail-pj1-x102c.google.com with SMTP id 98e67ed59e1d1-2da4ea59658so2358911a91.0 for ; Sat, 07 Sep 2024 19:26:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1725762402; x=1726367202; darn=nongnu.org; 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=tk0wGAYaA1BFCH8Bi5mZsOhd6+SwTodI8yFR1/zj/XA=; b=rbW7uDKULEpLP6dC06hrDi0HpQ81gLwoLSWkjtetpgxdmt1DscLfXomdHdUUOpgwfH uMZGSrWrV9Frayz8Pzp29GUY9ZRqwciIFe3fO5a03VmrgwUK9zp1Sg2sC/muIHZJ1Qfy 4K0eFCQ6Ls5fm/O5xAjW+3hpCfpaApgyxdElTSXfzIHYamnXBvFituCLjDj93b8V9nmk /eUeEv9ZQFeii5bdNLtY+xVKEymenwUhLbPeKHpldwP0oMF0C4Hulz7NaUaUlksdVrgZ e7BuSnajTCCwJTVCbqtHkV+km3hTxBcTDxrhWo9tuqKrwJiN1ORNH+Gsjmiabwh1nstJ teWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725762402; x=1726367202; 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=tk0wGAYaA1BFCH8Bi5mZsOhd6+SwTodI8yFR1/zj/XA=; b=YwA7KSQi5QTS0zXyCG4zdcuFJuh5S6cx2J7Mj/mRL1Dj2r9jMKWWSKHX8hyNFczmcB 9QWLLm2d2O3v7YILECll9M7f3z/83v8b8YvbL8R+NTwRo3EBhNspOzfK9mm0FZS58a2j IvfcV4FOznVWpw4rhZg0F3dPxlbajAFyDn5oL+DNlbcVChzbjoSgpbNCI4V2lWAy18pj up8CfZBHvFmmFqU5btZWvdbFHGJ6e/nPtEdSonaYvVjYKG39jhnOaVCA+Ct3fCGPEBa2 UhLnDR2wIx6QgEClOC2IrCRB0Vf2zXY43oiOGhHmO+0oTlAzmreSjhFOnzJK4azE0dpN x4hA== X-Gm-Message-State: AOJu0YzKj36WTP63K4muhUvqAd2GN5oRyhpuLmXD3yxeGGhV9+fOdFot bod1dA8YbcRJO8owFT3R2es2mcl4xWUr8ZNH1C+MABY8OztxS4x1Lp3lYUteA1WuAY2+6fH20zC 7 X-Google-Smtp-Source: AGHT+IHuXrKEZmk4TmwHjWsaZ7xwLfaUeqxpeG8iHvFUHwUiJQDQposs4PvIWELoMupL25ZCASBalQ== X-Received: by 2002:a17:90a:ee87:b0:2c8:858:7035 with SMTP id 98e67ed59e1d1-2dad50cbcb1mr7287239a91.25.1725762401715; Sat, 07 Sep 2024 19:26:41 -0700 (PDT) Received: from stoup.. (174-21-81-121.tukw.qwest.net. [174.21.81.121]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2dadbfe46d4sm4084019a91.1.2024.09.07.19.26.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Sep 2024 19:26:41 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: zhiwei_liu@linux.alibaba.com, tangtiancheng.ttc@alibaba-inc.com, liwei1518@gmail.com, bmeng.cn@gmail.com Subject: [PATCH 07/12] tcg/optimize: Optimize cmp_vec and cmpsel_vec Date: Sat, 7 Sep 2024 19:26:27 -0700 Message-ID: <20240908022632.459477-8-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240908022632.459477-1-richard.henderson@linaro.org> References: <20240908022632.459477-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Place immediate values second in the comparison. Place destination matches first in the true/false values. All of this mirrors what we do for integer setcond and movcond. Signed-off-by: Richard Henderson --- tcg/optimize.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index cf311790e0..f11f576fd4 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -2422,6 +2422,36 @@ static bool fold_setcond2(OptContext *ctx, TCGOp *op) return tcg_opt_gen_movi(ctx, op, op->args[0], i); } +static bool fold_cmp_vec(OptContext *ctx, TCGOp *op) +{ + /* Canonicalize the comparison to put immediate second. */ + if (swap_commutative(NO_DEST, &op->args[1], &op->args[2])) { + op->args[3] = tcg_swap_cond(op->args[3]); + } + return false; +} + +static bool fold_cmpsel_vec(OptContext *ctx, TCGOp *op) +{ + /* If true and false values are the same, eliminate the cmp. */ + if (args_are_copies(op->args[3], op->args[4])) { + return tcg_opt_gen_mov(ctx, op, op->args[0], op->args[3]); + } + + /* Canonicalize the comparison to put immediate second. */ + if (swap_commutative(NO_DEST, &op->args[1], &op->args[2])) { + op->args[5] = tcg_swap_cond(op->args[5]); + } + /* + * Canonicalize the "false" input reg to match the destination, + * so that the tcg backend can implement "move if true". + */ + if (swap_commutative(op->args[0], &op->args[4], &op->args[3])) { + op->args[5] = tcg_invert_cond(op->args[5]); + } + return false; +} + static bool fold_sextract(OptContext *ctx, TCGOp *op) { uint64_t z_mask, s_mask, s_mask_old; @@ -2928,6 +2958,12 @@ void tcg_optimize(TCGContext *s) case INDEX_op_setcond2_i32: done = fold_setcond2(&ctx, op); break; + case INDEX_op_cmp_vec: + done = fold_cmp_vec(&ctx, op); + break; + case INDEX_op_cmpsel_vec: + done = fold_cmpsel_vec(&ctx, op); + break; CASE_OP_32_64(sextract): done = fold_sextract(&ctx, op); break;