[Bug target/85287] New: ICE in in extract_insn, at recog.c:2304 on ppc64 with -fstack-clash-protection

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85287

            Bug ID: 85287
           Summary: ICE in in extract_insn, at recog.c:2304 on ppc64 with
                    -fstack-clash-protection
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: law at gcc dot gnu.org, segher at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux-gnu
            Target: ppc64-linux-gnu

Following ICEs with cross-compiler:

$ ppc64-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/900313-1.c
/dev/null -fstack-clash-protection --param
stack-clash-protection-probe-interval=16
[...]
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/900313-1.c: In
function ‘main’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/900313-1.c:8:1:
error: unrecognizable insn:
 }
 ^
(insn 24 71 25 5 (set (reg:DI 141)
        (neg:DI (const_int 34464 [0x86a0])))
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/900313-1.c":6
-1
     (nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/900313-1.c:8:1:
internal compiler error: in extract_insn, at recog.c:2304
0x5749db _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        .././../gcc/rtl-error.c:108
0x5749fa _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        .././../gcc/rtl-error.c:116
0xaeeb27 extract_insn(rtx_insn*)
        .././../gcc/recog.c:2304
0x88e00a instantiate_virtual_regs_in_insn
        .././../gcc/function.c:1599
0x88e00a instantiate_virtual_regs
        .././../gcc/function.c:1969
0x88e00a execute
        .././../gcc/function.c:2018