From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from xry111.site (xry111.site [89.208.246.23]) by sourceware.org (Postfix) with ESMTPS id 135C03858D37; Sun, 12 Nov 2023 20:26:35 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 135C03858D37 Authentication-Results: sourceware.org; dmarc=pass (p=reject dis=none) header.from=xry111.site Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=xry111.site ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 135C03858D37 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=89.208.246.23 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699820796; cv=none; b=anAC2OnxJ+/rE7iBbsdc+xQhqZQ9LtK9ZEx+PkziWoMmDfi25X9DMETYUYGoGHEok6FkH5KMy3sEVgbvVKtPOVJ3VMv22ljNEfTX64BXVpcywpl9VdOcJBsK3rc8bvw1i63/0Vrw+RpVzdFlNXTeMpXfAHKZzGHT8VLxDN7BSAc= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699820796; c=relaxed/simple; bh=6eqOhLnRT3oLwCdYGq6A/bd0jQPG9XWcKPbbOLBc170=; h=DKIM-Signature:From:To:Subject:Date:Message-ID:MIME-Version; b=npV7tKmAqlLYsXR7LcXMsF1h0LFT+qzS4Tb9p0qfEoKexWW0qDuexaPmPXjDZA99g6FIAIMlnYZS1p6ogCKsnLJA907pl58M7kJ/G1TEYC8VWoUZo+LXJmnt08BIKy1oo3qJw5xiz4or5mlY2SXueBxD+3lq7y9/FGYdliUxcBo= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xry111.site; s=default; t=1699820791; bh=6eqOhLnRT3oLwCdYGq6A/bd0jQPG9XWcKPbbOLBc170=; h=From:To:Cc:Subject:Date:From; b=DFa7uE/Ib9OfJ+rOakMRysHpIiZARCmKfEuWExtVagw/QtG0vy2ED9FI3sEAaRxAl NvsrIoYKVx5gsoxojezNbydhT7yVKVwBMMqxlmN2aJNo+7D3tJRZgB4DzkGTlqgW/F k8W59yJ8ryg4L7fXmrILdENJxo/cPvYTwjSbrJYg= Received: from stargazer.. (unknown [IPv6:240e:358:11b3:9500:dc73:854d:832e:2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id CCDAF66A03; Sun, 12 Nov 2023 15:26:27 -0500 (EST) From: Xi Ruoyao To: gcc-patches@gcc.gnu.org Cc: chenglulu , i@xen0n.name, xuchenghua@loongson.cn, Tamar Christina , tschwinge@gcc.gnu.org, Roger Sayle , Xi Ruoyao Subject: [PATCH] Fix (fcopysign x, NEGATIVE_CONST) -> (fneg (fabs x)) simplification [PR112483] Date: Mon, 13 Nov 2023 04:25:26 +0800 Message-ID: <20231112202603.228074-2-xry111@xry111.site> X-Mailer: git-send-email 2.42.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-9.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,LIKELY_SPAM_FROM,SPF_HELO_PASS,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: (fcopysign x, NEGATIVE_CONST) can be simplified to (fneg (fabs x)), but a logic error in the code caused it mistakenly simplified to (fneg x) instead. gcc/ChangeLog: PR rtl-optimization/112483 * simplify-rtx.cc (simplify_binary_operation_1) : Fix the simplification of (fcopysign x, NEGATIVE_CONST). --- Bootstrapped and regtested on loongarch64-linux-gnu and x86_64-linux-gnu. Ok for trunk? gcc/simplify-rtx.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc index 69d87579d9c..2d2e5a3c1ca 100644 --- a/gcc/simplify-rtx.cc +++ b/gcc/simplify-rtx.cc @@ -4392,7 +4392,7 @@ simplify_ashift: real_convert (&f1, mode, CONST_DOUBLE_REAL_VALUE (trueop1)); rtx tmp = simplify_gen_unary (ABS, mode, op0, mode); if (REAL_VALUE_NEGATIVE (f1)) - tmp = simplify_gen_unary (NEG, mode, op0, mode); + tmp = simplify_gen_unary (NEG, mode, tmp, mode); return tmp; } if (GET_CODE (op0) == NEG || GET_CODE (op0) == ABS) -- 2.42.1