From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 34F4C3858405; Tue, 31 Aug 2021 06:57:45 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 34F4C3858405 From: "zsojka at seznam dot cz" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 Date: Tue, 31 Aug 2021 06:57:44 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: ice-on-valid-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 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 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: Tue, 31 Aug 2021 06:57:45 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102141 Bug ID: 102141 Summary: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 Product: gcc Version: 12.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Created attachment 51386 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51386&action=3Dedit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O2 testcase.c testcase.c: In function 'foo': testcase.c:4:1: error: definition in block 2 follows the use 4 | foo (unsigned long x) | ^~~ for SSA_NAME: bswapdst_14 in statement: _15 =3D (unsigned int) bswapdst_14; during GIMPLE pass: bswap testcase.c:4:1: internal compiler error: verify_ssa failed 0x14f5bb1 verify_ssa(bool, bool) /repo/gcc-trunk/gcc/tree-ssa.c:1214 0x11b7d85 execute_function_todo /repo/gcc-trunk/gcc/passes.c:2049 0x11b8af3 do_per_function /repo/gcc-trunk/gcc/passes.c:1687 0x11b8af3 execute_todo /repo/gcc-trunk/gcc/passes.c:2096 Please submit a full bug report, with preprocessed source if appropriate. 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-r12-3244-20210831062827-= gaba800615e1-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc= /x86_64-pc-linux-gnu/12.0.0/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-r12-3244-20210831062827-gaba800615= e1-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.0.0 20210831 (experimental) (GCC)=