[Bug target/87163] New: ICE in extract_insn, at recog.c:2305

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87163

            Bug ID: 87163
           Summary: ICE in extract_insn, at recog.c:2305
           Product: gcc
           Version: 9.0
            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: segher at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux-gnu
            Target: ppc64le-linux-gnu

Now having proper AS, I see:

$ ppc64le-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/signbit-1.c
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/signbit-1.c: In
function ‘do_signbit_if’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/signbit-1.c:8:1:
error: unrecognizable insn:
8 | int do_signbit_if (__ibm128 a) { return __builtin_signbit (a); }
  | ^~~
(insn 7 6 8 2 (set (reg:DF 125)
        (float_truncate:DF (reg:IF 124)))
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/signbit-1.c":8
-1
     (nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/signbit-1.c:8:1:
internal compiler error: in extract_insn, at recog.c:2305
0x55c83d _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/rtl-error.c:108
0x55c859 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/rtl-error.c:116
0x55bd32 extract_insn(rtx_insn*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/recog.c:2305
0x79dabf instantiate_virtual_regs_in_insn
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:1605
0x79dabf instantiate_virtual_regs
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:1975
0x79dabf execute
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:2024