[Bug target/92449] New: [10 Regression] ICE in extract_insn, at recog.c:2311

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92449

            Bug ID: 92449
           Summary: [10 Regression] ICE in extract_insn, at recog.c:2311
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu

gcc-10.0.0-alpha20191110 snapshot (r278028) ICEs when compiling
gcc/testsuite/gcc.dg/pr44214-2.c w/ -Ofast -fno-cx-limited-range:

% powerpc-e300c3-linux-gnu-gcc-10.0.0-alpha20191110 -Ofast
-fno-cx-limited-range -c gcc/testsuite/gcc.dg/pr44214-2.c
gcc/testsuite/gcc.dg/pr44214-2.c: In function 'do_div':
gcc/testsuite/gcc.dg/pr44214-2.c:7:1: error: unrecognizable insn:
    7 | }
      | ^
(jump_insn 26 25 27 2 (set (pc)
        (if_then_else (ordered (reg:CCFP 141)
                (const_int 0 [0]))
            (label_ref 43)
            (pc))) -1
     (int_list:REG_BR_PROB 1073204964 (nil))
 -> 43)
during RTL pass: vregs
gcc/testsuite/gcc.dg/pr44214-2.c:7:1: internal compiler error: in extract_insn,
at recog.c:2311
0x66771c _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-10.0.0_alpha20191110/work/gcc-10-20191110/gcc/rtl-error.c:108
0x66773c _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-10.0.0_alpha20191110/work/gcc-10-20191110/gcc/rtl-error.c:116
0x665957 extract_insn(rtx_insn*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-10.0.0_alpha20191110/work/gcc-10-20191110/gcc/recog.c:2311
0xac1a63 instantiate_virtual_regs_in_insn
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-10.0.0_alpha20191110/work/gcc-10-20191110/gcc/function.c:1607
0xac1a63 instantiate_virtual_regs
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-10.0.0_alpha20191110/work/gcc-10-20191110/gcc/function.c:1977
0xac1a63 execute
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-10.0.0_alpha20191110/work/gcc-10-20191110/gcc/function.c:2026