From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id F3AC13858436; Tue, 30 May 2023 10:49:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F3AC13858436 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685443753; bh=FhQy58pya2HkBkYoBu2reSMV/eWLgA8+OPEjjJmjioA=; h=From:To:Subject:Date:From; b=nM++YRk/tqekEmepP6HNYmiKV7wk0hLD9t88pfliG1RuHUNFdppiPW8B6JcDxIVKM ulZNb8K9xvKa2kOdRA1OFd+flvxC8jg3PFFw//MgFmU4VDh5+UGLjpAP2JVEtwkBO6 mmthTg2olgQ93MYtG4XRZ+FYIfdlmtCOJhEmvcGs= From: "zsojka at seznam dot cz" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/110038] New: [14 Regression] ICE: in rewrite_expr_tree_parallel, at tree-ssa-reassoc.cc:5522 with --param=tree-reassoc-width=2147483647 Date: Tue, 30 May 2023 10:49:12 +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: 14.0 X-Bugzilla-Keywords: 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 bug_severity priority component assigned_to reporter target_milestone 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=3D110038 Bug ID: 110038 Summary: [14 Regression] ICE: in rewrite_expr_tree_parallel, at tree-ssa-reassoc.cc:5522 with --param=3Dtree-reassoc-width=3D2147483647 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Created attachment 55216 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D55216&action=3Dedit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O --param=3Dtree-reassoc-width=3D2147483647 test= case.c=20 during GIMPLE pass: reassoc testcase.c: In function 'foo': testcase.c:4:1: internal compiler error: in rewrite_expr_tree_parallel, at tree-ssa-reassoc.cc:5522 4 | foo (unsigned u) | ^~~ 0x82f7b5 rewrite_expr_tree_parallel /repo/gcc-trunk/gcc/tree-ssa-reassoc.cc:5522 0x160d21d reassociate_bb /repo/gcc-trunk/gcc/tree-ssa-reassoc.cc:6931 0x160b55a reassociate_bb /repo/gcc-trunk/gcc/tree-ssa-reassoc.cc:6994 0x160dc33 do_reassoc /repo/gcc-trunk/gcc/tree-ssa-reassoc.cc:7106 0x160dc33 execute_reassoc /repo/gcc-trunk/gcc/tree-ssa-reassoc.cc:7195 0x160dc33 execute /repo/gcc-trunk/gcc/tree-ssa-reassoc.cc:7236 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. What probably happens, is an overflow in tree-ssa-reassoc.c due to the extr= eme value of param_tree_reassoc_width: 5459 while (width > width_min) 5460 { 5461 int width_mid =3D (width + width_min) / 2; 5462 5463 if (get_required_cycles (ops_num, width_mid) =3D=3D cycles_best) $ 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-r14-1399-20230530111808-= g456cf52c0d3-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc= /x86_64-pc-linux-gnu/14.0.0/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-r14-1399-20230530111808-g456cf52c0= d3-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.0 20230530 (experimental) (GCC)=