X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:from:subject:message-id:date:mime-version :content-type:content-transfer-encoding; q=dns; s=default; b=Jdx rDaj+oc+aPy/gd8h2BYE4ZFGBy4UmREA6h+YFmqDbKxrgLUvupbiElENGR0hsJPh V3sVJZiLKg1T5Cz8drQ377UTHl672y9VRaMNu1MmePEWyAr1W+EUuN4Q81LBKELa Ees+ehLfLJyo+LPo0SwkkaDofYdOQCYB6lu6Oo9M= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:from:subject:message-id:date:mime-version :content-type:content-transfer-encoding; s=default; bh=GeD8ebtVR Y0E5vRYqCuL4guKaxc=; b=XRUbmYWBvC8SUh2AjY3MGSa9KgSDf8vvPGTYW/Po5 rLEfE17/SsYyfzLcNXslyOpcRI2dEnIg63IGqpTb7J6+bZ6+HNJA9Xl1uH5Bji9n jkYmMQGAVw/N7+XQ75yMvUaiuHm+Xp9o2+SJdKw0ZfJwYcd/cYzGU74KQ5WSkBFJ /w= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_FAIL,SPF_HELO_PASS,URI_HEX autolearn=no version=3.3.1 spammy=o2, HContent-Transfer-Encoding:8bit X-HELO: gateway32.websitewelcome.com To: "cygwin AT cygwin DOT com" From: Agner Fog Subject: Clang collapses on template with 64 parameters Message-ID: <279042c8-d6e5-ab4a-88f1-f8cbda8e18c7@agner.org> Date: Tue, 6 Aug 2019 10:58:40 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-IsSubscribed: yes Note-from-DJ: This may be spam Here's another bug report. Cygwin Clang fails when compiling a complicated program with big templates. The same program compiles OK on Linux clang. I have not made a minimal test case because smaller cases compile ok. The test case is too big for attaching to a mailing list, so I have made it available at: https://www.agner.org/rapporter/cygwin_clang_template_bug.zip Command line: clang -m64 -std=c++17 -O2 -mfma -mavx512bw -mavx512dq -mavx512vl testbench2.cpp The compiler issues a long message: fatal error: error in backend: Cannot select: 0x6019f23c0: ch = store)(alias.scope=<0x601890348>,<0x6018c6ab8>)> 0x601a239c8, 0x6019f2018, FrameIndex:i64<7>, undef:i64 0x6019f2018: v64i8,ch = VPSHUFBZrm 0x6019dadb8, 0x6019db438, TargetConstant:i8<1>, Register:i64 %noreg, TargetConstant:i32<0>, Register:i32 %noreg, 0x601926528 0x6019dadb8: v64i8 = bitcast 0x6019f1c08 0x6019f1c08: v8i64 = VPBROADCASTQZr 0x6019db368 0x6019db368: v2i64 = extract_subvector 0x6019f1c08, Constant:i64<0> 0x6019f1c08: v8i64 = VPBROADCASTQZr 0x6019db368 0x6019db368: v2i64 = extract_subvector 0x6019f1c08, Constant:i64<0> 0x6019f1c08: v8i64 = VPBROADCASTQZr 0x6019db368 0x6019db368: v2i64 = extract_subvector 0x6019f1c08, Constant:i64<0> 0x6019f1c08: v8i64 = VPBROADCASTQZr 0x6019db368 0x601a23758: i64 = Constant<0> 0x601a23758: i64 = Constant<0> 0x601a23758: i64 = Constant<0> 0x6019db438: i64 = X86ISD::Wrapper TargetConstantPool:i64<<64 x i8> > 0 0x6019dbcc0: i64 = TargetConstantPool<<64 x i8> > 0 0x6019db848: i8 = TargetConstant<1> 0x6019f1a68: i64 = Register %noreg 0x6019f20e8: i32 = TargetConstant<0> 0x601a23620: i32 = Register %noreg 0x6019dae20: i64 = FrameIndex<7> 0x6019f2288: i64 = undef In function: main clang-5.0: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 5.0.1 (tags/RELEASE_501/final) Target: x86_64-unknown-windows-cygnus Thread model: posix InstalledDir: /usr/bin clang-5.0: note: diagnostic msg: PLEASE submit a bug report to and include the crash backtrace, preprocessed source, and associated run script. clang-5.0: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang-5.0: note: diagnostic msg: /tmp/testbench2-31c6c0.cpp clang-5.0: note: diagnostic msg: /tmp/testbench2-31c6c0.sh clang-5.0: note: diagnostic msg: ******************** The diagnostic files are included in the zip as diagnostic* -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple