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[174.21.81.121]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2dadbfe46d4sm4084019a91.1.2024.09.07.19.26.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Sep 2024 19:26:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1725762401; x=1726367201; 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=/GYQH+qlsiZNusd91SlPcZXeCA8M1xc1mlbTAMFEsWI=; b=Gb+ABANnyglRwCEUKdp1iR5BZKFJJW40P6+kTmoyAG4mpkNY6+6cThqutRiZ/ar1dt c7ILOiTyiUHdBPjOY9GS8rcyrnZoYaX3zTYcduwpecjnTJ0pLVQUEgtizLU8tl2CqXk9 hTQjUtBx3r84tLvXHhf5L0z/iGVk3kOL6Lgn6LqI9KL8ZQOpn5y0lUNNwD8os0duUi+c H+DPXVANrc/gjZ94gCcJgq9GRjS6xR1R2Z7LTajmPIRle4M5iI1xrYOj3x+SU2IOe+yO vKv+jIv27V4f2agrnnlHaXNs2lETLsSTZ7JxxbQQAFksfb0TSkTzCd/KnfIPw5WfGHf3 93hg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725762401; x=1726367201; 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=/GYQH+qlsiZNusd91SlPcZXeCA8M1xc1mlbTAMFEsWI=; b=O7FaezAotExGCDzvUbJCgqMwk45Cijrq7HvmRLiGj/cNFxQumDcEl8blqpAiqnLEeF 51bvnlDt6urH22qTxAQSrRh7fJGohRoRMctnhK62LHhasUXZJ5Wm0JcKpwkl3Gyy39f5 ROF8Zbx2Y3efL5sv6Lq9ArGBZTPoTiwhib2RumiG6c76b8ZY85ut1PkKRBPcoEkCOUbE 19BE+RSz7Gf6SCL+mDhBJz/ufMIRcXTeQ0PTd8/hy2G9f0luxVNG6CLYNfTXZlKBCQCU WFy9ipnoiFmCrwARzWE8MIxtXARsi6X7YpDgE0LDpGdxEMS6D/dao1enEsR07k5NNt8B kHAw== X-Gm-Message-State: AOJu0YwvhIYtM0VfHJWBevTfbbSEfLThE6eC/RI29EEaB+hOP/AGEEWJ WC6IRLFLwV/E6p9PXoIR04weVpLRoxhGjMStxVMp11E1+wm3HxGAhRxFdJkYwCMVHDfL9EyUORi Y X-Google-Smtp-Source: AGHT+IFPV5ddEwzUHQevvpH5mWuwC7UH0ippviagH5gjYNuXdjVgVZppCmxZRGaBTa5khBTUA6Kygg== X-Received: by 2002:a05:6830:4411:b0:708:d860:e51b with SMTP id 46e09a7af769-710cc22c384mr8034581a34.15.1725762400534; Sat, 07 Sep 2024 19:26:40 -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 06/12] tcg/optimize: Fold movcond with true and false values identical Date: Sat, 7 Sep 2024 19:26:26 -0700 Message-ID: <20240908022632.459477-7-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 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::336; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x336.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: 1725762546602116600 Content-Type: text/plain; charset="utf-8" Fold "x =3D cond ? y : y" to "x =3D y". Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- tcg/optimize.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index ba16ec27e2..cf311790e0 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1851,6 +1851,11 @@ static bool fold_movcond(OptContext *ctx, TCGOp *op) { int i; =20 + /* 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 "false" input reg to match the destination reg so * that the tcg backend can implement a "move if true" operation. --=20 2.43.0