From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by sourceware.org (Postfix) with ESMTPS id 892983858C2C for ; Thu, 9 Sep 2021 23:50:11 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 892983858C2C Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=sifive.com Received: by mail-pj1-x1035.google.com with SMTP id j10-20020a17090a94ca00b00181f17b7ef7so194350pjw.2 for ; Thu, 09 Sep 2021 16:50:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Lntl7RW+MiLye/NehJkfXLrDdBHrdA3A5IJq7an3bgs=; b=ne048Xic9fzQ6oA+lLW0mZVUsSuPWKLCvOJfKt8QdXmvclXsevydQDFefVAC92Fe8b 9+Vyv1O+U98O0CxaoPeqNF4atZAN4eESbiSDWMi+VQvDK8R4UIW6Ljea0XMOfkCHR6o+ jApPnRgiLV88mlP2/+UK/gpON+a4bLfrQbE0JWiEgUoaf3QKZ6xsQl4aOOqi0ZZwEYF7 XHq2txnKpwHB7B6FfnngzxXFAa1lM+zEr9ouQjMqZqxlZgKfA7rTN7B0Fl+1pgHuWsEv vXWYI8z5iIfDWpJR0Wk8wlnu+Qxgiabi1iYZci966uUKMgwuhY2plcHm1iQAZxa5qwo4 yBaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Lntl7RW+MiLye/NehJkfXLrDdBHrdA3A5IJq7an3bgs=; b=gHRNAHn0ofs0N2zu76PEI2DNlMMZFdlPVbylTVMQ1mx42Uv4hcucfpJgGhyAKfitnt 04HP5Y/305Sohj3Cj7N1yWZ5vBVvew/RhY0re8UobbtQm+r0DgAIZUtR+RwYElT1pFrU cs4pfcA7S0hE4M+0IGdWSpXnFO6Wmi0tnm9ZRwDQ6OmrnuyrFOt2nGdqj5Yo/+PnAgya zqqKeizWa36kZ0OcXHXHxHOKjaEGj0RoYy1XN4QT7H7RiGWb0C8n8J5oaHvhW97+iN2R 4SGxqZeNYQTEDBeGvf0FIMbBjD/JvDUPvlAaIU54c7D11HdbjjuXP3ucIw/JiZ/znoB+ qJow== X-Gm-Message-State: AOAM532UIEyd4Ft2XW51emwaFIeTrNKhDc0GU7Y8YRRMCDXWMb9x+iYV Er5FCbv7wHRZCBtRm3lXN4xiHRoM1pBRWQ== X-Google-Smtp-Source: ABdhPJwAQd8WGxwwIVQ50ozKaTURaZspBTk1YFxozeoJYSN562Iq9ZWiTj0kElntHRi6kSmIgqcV+g== X-Received: by 2002:a17:90b:4b07:: with SMTP id lx7mr6336502pjb.103.1631231410451; Thu, 09 Sep 2021 16:50:10 -0700 (PDT) Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com. [209.85.214.173]) by smtp.gmail.com with ESMTPSA id m64sm3533917pga.55.2021.09.09.16.50.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 09 Sep 2021 16:50:09 -0700 (PDT) Received: by mail-pl1-f173.google.com with SMTP id l11so2168877plk.6; Thu, 09 Sep 2021 16:50:09 -0700 (PDT) X-Received: by 2002:a17:90b:38cd:: with SMTP id nn13mr6369586pjb.108.1631231409480; Thu, 09 Sep 2021 16:50:09 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Andrew Waterman Date: Thu, 9 Sep 2021 16:49:57 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [Bug target/102211] [12 regression] ICE introduced by r12-3277 To: "wilson at gcc dot gnu.org" Cc: gcc-bugs@gcc.gnu.org Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=no 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-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Sep 2021 23:50:12 -0000 On Tue, Sep 7, 2021 at 10:55 PM wilson at gcc dot gnu.org via Gcc-bugs wrote: > > The hardware may trap if > you access a 32-bit value which is not properly NaN-boxed. I don't think the following affects the resolution of the ticket, but just for the record, trapping is _not_ an option the ISA permits. The only legal outcome from using an improperly NaN-boxed value as an argument to an instruction that requires NaN-boxed inputs is that the canonical NaN is substituted in its place.