From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2136) id 088403858D38; Fri, 14 Oct 2022 17:40:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 088403858D38 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1665769212; bh=z8YXMGM0BIWr+uJWUrPQwOYQ5rlEA+jFDgcBfgMITQM=; h=From:To:Subject:Date:From; b=qAMSZrleDMU+86EgO3rdVzfnSZbJm9maWbqr28ZftK4PQogmMilQm845V3/wtpKlB v0GysZdaa4voIgDwHyMcWRK5ckXtrS4a+Ge+SLyssVlq7Tz0zumgH/xVAay/OrG//z E1FaznENOzo22BKfxx6AzmaFsrMrLSPyuw9/sOnU= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Aldy Hernandez To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-3308] Implement distinction between HONOR_SIGNED_ZEROS and MODE_HAS_SIGNED_ZEROS. X-Act-Checkin: gcc X-Git-Author: Aldy Hernandez X-Git-Refname: refs/heads/master X-Git-Oldrev: 8efc38347a7444dde3fb173f0f2c59a60b7db53d X-Git-Newrev: b4a4c6382b14bc107d6d95ff809f3e9cd71944e7 Message-Id: <20221014174012.088403858D38@sourceware.org> Date: Fri, 14 Oct 2022 17:40:12 +0000 (GMT) List-Id: https://gcc.gnu.org/g:b4a4c6382b14bc107d6d95ff809f3e9cd71944e7 commit r13-3308-gb4a4c6382b14bc107d6d95ff809f3e9cd71944e7 Author: Aldy Hernandez Date: Fri Oct 14 16:49:33 2022 +0200 Implement distinction between HONOR_SIGNED_ZEROS and MODE_HAS_SIGNED_ZEROS. gcc/ChangeLog: * value-range.cc (frange::set): Implement distinction between HONOR_SIGNED_ZEROS and MODE_HAS_SIGNED_ZEROS. Diff: --- gcc/value-range.cc | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/value-range.cc b/gcc/value-range.cc index ee15eb35df8..4794d2386a8 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -324,13 +324,20 @@ frange::set (tree type, m_neg_nan = false; } - if (!HONOR_SIGNED_ZEROS (m_type)) + if (!MODE_HAS_SIGNED_ZEROS (TYPE_MODE (m_type))) { if (real_iszero (&m_min, 1)) m_min.sign = 0; if (real_iszero (&m_max, 1)) m_max.sign = 0; } + else if (!HONOR_SIGNED_ZEROS (m_type)) + { + if (real_iszero (&m_max, 1)) + m_max.sign = 0; + if (real_iszero (&m_min, 0)) + m_min.sign = 1; + } // For -ffinite-math-only we can drop ranges outside the // representable numbers to min/max for the type.