From patchwork Mon Dec 27 01:48:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liuhongt X-Patchwork-Id: 1573278 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.a=rsa-sha256 header.s=default header.b=vk8EXcUb; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org (client-ip=8.43.85.97; helo=sourceware.org; envelope-from=gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Received: from sourceware.org (ip-8-43-85-97.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4JMgZv6sh2z9sRR for ; Mon, 27 Dec 2021 12:49:42 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 34B183858421 for ; Mon, 27 Dec 2021 01:49:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 34B183858421 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1640569777; bh=rLgg5alnzOGxlt3R33XVmJxH3l2mxv+muhBBgL9UcCI=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=vk8EXcUbd6DtD4ibXoAdn4pZWzFVp94IJcBdnEudflzXJSy9qP1Kj7X6k4v+AKDtD /FVtxdgpfcJAGqdjUuenI6FiUT34B+l9o1AX9RTOiON24Wp9VC2QuT/PYrN/FEikNG TfzZzmkRCkPxa751YkJ3hKr007pyxGSNdTMAQWkY= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by sourceware.org (Postfix) with ESMTPS id 7EFE63858D39 for ; Mon, 27 Dec 2021 01:48:55 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 7EFE63858D39 X-IronPort-AV: E=McAfee;i="6200,9189,10209"; a="327474159" X-IronPort-AV: E=Sophos;i="5.88,238,1635231600"; d="scan'208";a="327474159" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Dec 2021 17:48:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,238,1635231600"; d="scan'208";a="608925179" Received: from scymds01.sc.intel.com ([10.148.94.138]) by FMSMGA003.fm.intel.com with ESMTP; 26 Dec 2021 17:48:54 -0800 Received: from shliclel320.sh.intel.com (shliclel320.sh.intel.com [10.239.236.50]) by scymds01.sc.intel.com with ESMTP id 1BR1mqZC022463; Sun, 26 Dec 2021 17:48:53 -0800 To: gcc-patches@gcc.gnu.org Subject: [PATCH] Set __FLT_EVAL_METHOD__/__FLT_EVAL_METHOD_TS_18661_3__ to FLT_EVAL_METHOD_PROMOTE_TO_FLOAT when FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16. Date: Mon, 27 Dec 2021 09:48:51 +0800 Message-Id: <20211227014851.21972-1-hongtao.liu@intel.com> X-Mailer: git-send-email 2.18.1 X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: liuhongt via Gcc-patches From: liuhongt Reply-To: liuhongt Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Sender: "Gcc-patches" Since FLT_EVAL_METHOD only accepts negative value, 0, 1 or 2. gcc/c-family/ChangeLog: PR c/100854 * c-common.c (excess_precision_mode_join): Return FLT_EVAL_METHOD_PROMOTE_TO_FLOAT when both x and y are FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16. --- gcc/c-family/c-common.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c index a25d59fa77b..4dab4d60773 100644 --- a/gcc/c-family/c-common.c +++ b/gcc/c-family/c-common.c @@ -8842,6 +8842,10 @@ excess_precision_mode_join (enum flt_eval_method x, || y == FLT_EVAL_METHOD_UNPREDICTABLE) return FLT_EVAL_METHOD_UNPREDICTABLE; + /* FLT_EVAL_METHOD only accepts negative values, 0, 1 or 2, but + FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 is 16. */ + if (x == y && x == FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16) + return FLT_EVAL_METHOD_PROMOTE_TO_FLOAT; /* GCC only supports one interchange type right now, _Float16. If we're evaluating _Float16 in 16-bit precision, then flt_eval_method will be FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16. */