From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed Date: Sun, 25 Sep 2016 03:20:15 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0698034190==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 58BE96E015 for ; Sun, 25 Sep 2016 03:20:15 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0698034190== Content-Type: multipart/alternative; boundary="14747736150.7cFa.19829"; charset="UTF-8" --14747736150.7cFa.19829 Date: Sun, 25 Sep 2016 03:20:15 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D97917 Vedran Mileti=C4=87 changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |77449 Keywords| |regression --- Comment #1 from Vedran Mileti=C4=87 --- 6037e199c8a061b2e9cb22c434644a0eac659fb9 is the first bad commit commit 6037e199c8a061b2e9cb22c434644a0eac659fb9 Author: Duncan P. N. Exon Smith Date: Sun Sep 11 16:38:18 2016 +0000 CodeGen: Turn on sentinel tracking for MachineInstr iterators This is a prep commit before fixing MachineBasicBlock::reverse_iterator invalidation semantics, ala r281167 for ilist::reverse_iterator. This changes MachineBasicBlock::Instructions to track which node is the sentinel regardless of LLVM_ENABLE_ABI_BREAKING_CHECKS. There's almost no functionality change (aside from ABI). However, in the rare configuration: #if !defined(NDEBUG) && !defined(LLVM_ENABLE_ABI_BREAKING_CHECKS) the isKnownSentinel() assertions in ilist_iterator<>::operator* suddenly have teeth for MachineInstr. If these assertions start firing for your out-of-tree backend, have a look at the suggestions in the commit message for r279314, and at some of the commits leading up to it that avoid dereferencing the end() iterator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281168 91177308-0d34-0410-b5e6-96231b3b80d8 Referenced Bugs: https://bugs.freedesktop.org/show_bug.cgi?id=3D77449 [Bug 77449] Tracker bug for all bugs related to Steam titles --=20 You are receiving this mail because: You are the assignee for the bug.= --14747736150.7cFa.19829 Date: Sun, 25 Sep 2016 03:20:15 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated Vedran Mileti=C4=87 changed bug 97917<= /a>
What Removed Added
Blocks   77449
Keywords   regression

Comment= # 1 on bug 97917<= /a> from Vedran Mileti=C4=87 
6037e199c8a061b2e9cb22c434644a0eac659fb9 is the first bad comm=
it
commit 6037e199c8a061b2e9cb22c434644a0eac659fb9
Author: Duncan P. N. Exon Smith <dexonsmith@apple.com>
Date:   Sun Sep 11 16:38:18 2016 +0000

    CodeGen: Turn on sentinel tracking for MachineInstr iterators

    This is a prep commit before fixing MachineBasicBlock::reverse_iterator
    invalidation semantics, ala r281167 for ilist::reverse_iterator.  This
    changes MachineBasicBlock::Instructions to track which node is the
    sentinel regardless of LLVM_ENABLE_ABI_BREAKING_CHECKS.

    There's almost no functionality change (aside from ABI).  However, in
    the rare configuration:

        #if !defined(NDEBUG) && !defined(LLVM_ENABLE_ABI_BREAKING_C=
HECKS)

    the isKnownSentinel() assertions in ilist_iterator<>::operator* s=
uddenly
    have teeth for MachineInstr.  If these assertions start firing for your
    out-of-tree backend, have a look at the suggestions in the commit
    message for r279314, and at some of the commits leading up to it that
    avoid dereferencing the end() iterator.

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281168
91177308-0d34-0410-b5e6-96231b3b80d8


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