From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2815738930CC; Mon, 14 Dec 2020 12:17:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2815738930CC From: "zsojka at seznam dot cz" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/98272] New: [11 Regression] ICE: during GIMPLE pass: switchlower: in decompose, at wide-int.h:984 with -O -fno-tree-forwprop Date: Mon, 14 Dec 2020 12:17:36 +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: 11.0 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: Mon, 14 Dec 2020 12:17:37 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98272 Bug ID: 98272 Summary: [11 Regression] ICE: during GIMPLE pass: switchlower: in decompose, at wide-int.h:984 with -O -fno-tree-forwprop Product: gcc Version: 11.0 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 49758 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D49758&action=3Dedit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -fno-tree-forwprop testcase.c=20 during GIMPLE pass: switchlower testcase.c: In function 'foo': testcase.c:4:1: internal compiler error: in decompose, at wide-int.h:984 4 | foo (unsigned char uc) | ^~~ 0x61a4c0 wi::int_traits= > >::decompose(long*, unsigned int, generic_wide_int > const&) /repo/gcc-trunk/gcc/wide-int.h:984 0xac2400 wi::int_traits >::decompose(lon= g*, unsigned int, generic_wide_int const&) /repo/gcc-trunk/gcc/wide-int.h:1933 0xac2400 wide_int_ref_storage::wide_int_ref_storage >(generic_wide_int const&, unsigned int) /repo/gcc-trunk/gcc/wide-int.h:1034 0xac2400 generic_wide_int >::generic_wide_int >(generic_wide_int const&, unsigned int) /repo/gcc-trunk/gcc/wide-int.h:790 0xac2400 bool wi::ltu_p, generic_wide_int >(generic_wide_int con= st&, generic_wide_int const&) /repo/gcc-trunk/gcc/wide-int.h:1937 0x10aa543 bool wi::lt_p, generic_wide_int >(generic_wide_int con= st&, generic_wide_int const&, signop) /repo/gcc-trunk/gcc/wide-int.h:1963 0x10aa543 tree_switch_conversion::bit_test_cluster::emit(tree_node*, tree_node*, tree_node*, basic_block_def*) /repo/gcc-trunk/gcc/tree-switch-conversion.c:1562 0x10aac3b tree_switch_conversion::switch_decision_tree::try_switch_expansion(vec&) /repo/gcc-trunk/gcc/tree-switch-conversion.c:1893 0x10ab413 tree_switch_conversion::switch_decision_tree::analyze_switch_statement() /repo/gcc-trunk/gcc/tree-switch-conversion.c:1823 0x10ac217 execute /repo/gcc-trunk/gcc/tree-switch-conversion.c:2570 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-r11-5984-20201214092247-= gcf7efe2d36f-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-l= inux-gnu/11.0.0/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 --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-r11-5984-20201214092247-gcf7efe2d3= 6f-checking-yes-rtl-df-extra-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.0.0 20201214 (experimental) (GCC)=