From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id EB85E3858D20; Fri, 17 May 2024 17:55:14 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EB85E3858D20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1715968514; bh=LReBEPnVXOByl/fygKk+EIfrVRq7yDAdiTvOs5xS0iw=; h=From:To:Subject:Date:From; b=KtdJYdEyrURPpfw8hkDh9NYpuDngtY2wIT+vTPT4qTwj1LMpCeyoA3jqSeDChKIYf Z8gZpRB8/MSeQc45pH6cV9+HD5PFH2bFncrqcMB7HWL18C0BMj+fYpDbjbJs04XslE TE1HK253ac6SYrNRE/qFfLlCs8N/qvudzsmin00Y= From: "patrick at rivosinc dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/115142] New: [14/15 Regression] Unrecognizable insn in extract_insn, at recog.cc:2812 with -ftree-ter Date: Fri, 17 May 2024 17:55:14 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 15.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: patrick at rivosinc dot com 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 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=3D115142 Bug ID: 115142 Summary: [14/15 Regression] Unrecognizable insn in extract_insn, at recog.cc:2812 with -ftree-ter Product: gcc Version: 15.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: patrick at rivosinc dot com Target Milestone: --- Testcase: long a; char b; void e() { char f[8][1]; b =3D f[a][a]; } Backtrace: > /scratch/tc-testing/tc-apr-4/build-rv64gcv/bin/riscv64-unknown-linux-gnu-= gcc -ftree-ter red.c red.c: In function 'e': red.c:6:1: error: unrecognizable insn: 6 | } | ^ (insn 6 5 7 2 (set (reg:DI 138) (ashift:DI (mem/c:DI (symbol_ref:DI ("a") [flags 0x6] ) [1 a+0 S8 A64]) (const_int 1 [0x1]))) "red.c":5:11 -1 (nil)) during RTL pass: vregs red.c:6:1: internal compiler error: in extract_insn, at recog.cc:2812 0xa97591 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../../gcc/gcc/rtl-error.cc:108 0xa975b3 _fatal_insn_not_found(rtx_def const*, char const*, int, char const= *) ../../../gcc/gcc/rtl-error.cc:116 0xa95e87 extract_insn(rtx_insn*) ../../../gcc/gcc/recog.cc:2812 0xf5e21e instantiate_virtual_regs_in_insn ../../../gcc/gcc/function.cc:1611 0xf5e21e instantiate_virtual_regs ../../../gcc/gcc/function.cc:1994 0xf5e21e execute ../../../gcc/gcc/function.cc:2041 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. Godbolt: https://godbolt.org/z/ab7eh3o3E Affects RISC-V, Loongarch64 Found via fuzzer.=