From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D1FC03858D32; Mon, 29 Jan 2024 17:17:46 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D1FC03858D32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1706548666; bh=GPuhvMQmLz9o5nvoiVcxvjQF9NElIhfsTdUwXoSc0pk=; h=From:To:Subject:Date:From; b=SpHP2mUTTdTOk8ldKEDtDGjCvq23KRXFTdsFU5Zm26vFSGCPxPXXdW3DshU2nOZ43 4X1h1VAdPTDQSIX3bbYiu8EpuzLFdUSEm/Dl2Nabjyg+vea0NxEnG8YYhADwJD6m/J Kfo2RD8W1nwBBjvteDkiATCrtSrgv+vgmQypq8GQ= From: "zsojka at seznam dot cz" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/113660] New: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 2 with -fnon-call-exceptions -fharden-control-flow-redundancy on invalid Date: Mon, 29 Jan 2024 17:17:46 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: ice-on-invalid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: zsojka at seznam dot cz X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status keywords bug_severity priority component assigned_to reporter target_milestone cf_gcchost cf_gcctarget attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113660 Bug ID: 113660 Summary: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 2 with -fnon-call-exceptions -fharden-control-flow-redundancy on invalid Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 57254 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D57254&action=3Dedit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -fnon-call-exceptions -fharden-control-flow-redundancy testcase.c testcase.c: In function 'foo': testcase.c:5:3: error: impossible constraint in 'asm' 5 | __asm__ volatile("" : "=3Da"(i)); | ^~~~~~~ testcase.c:6:1: error: missing REG_EH_REGION note at the end of bb 2 6 | } | ^ during RTL pass: into_cfglayout testcase.c:6:1: internal compiler error: verify_flow_info failed 0xf904ae verify_flow_info() /repo/gcc-trunk/gcc/cfghooks.cc:287 0x268381b checking_verify_flow_info() /repo/gcc-trunk/gcc/cfghooks.h:214 0x268381b try_optimize_cfg /repo/gcc-trunk/gcc/cfgcleanup.cc:2980 0x268381b cleanup_cfg(int) /repo/gcc-trunk/gcc/cfgcleanup.cc:3143 0xfaaf8a execute /repo/gcc-trunk/gcc/cfgrtl.cc:3713 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See for instructions. $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=3D/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-g= cc COLLECT_LTO_WRAPPER=3D/repo/gcc-trunk/binary-trunk-r14-8487-20240129102032-= gb338fdbc2b7-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc= /x86_64-pc-linux-gnu/14.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=3Dc,c++ --enable-valgrind-annotations --disable-nls --enable-checking=3Dyes,rtl,df,= extra --disable-bootstrap --with-cloog --with-ppl --with-isl --build=3Dx86_64-pc-linux-gnu --host=3Dx86_64-pc-linux-gnu --target=3Dx86_64-pc-linux-gnu --with-ld=3D/usr/bin/x86_64-pc-linux-gnu-ld --with-as=3D/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=3D/repo/gcc-trunk//binary-trunk-r14-8487-20240129102032-gb338fdbc2= b7-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.1 20240129 (experimental) (GCC)=