[Bug target/87509] New: ICE in extract_insn, at recog.c:2305

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87509

            Bug ID: 87509
           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-pc-linux-gnu
            Target: ppc64le-linux-gnu

Following ICEs:

$ gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/test_fpscr_rn_builtin.c
-mpower9-vector
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/test_fpscr_rn_builtin.c:
In function ‘main’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/test_fpscr_rn_builtin.c:190:1:
error: unrecognizable insn:
190 | }
    | ^
(insn 17 16 18 5 (set (reg:DF 155)
        (unspec_volatile:DF [
                (const_double:DF
1.48219693752373963252970637860466411709517940784297e-323 [0x0.cp-1072])
            ] UNSPECV_MFFSCRN))
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/test_fpscr_rn_builtin.c":48
-1
     (nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/powerpc/test_fpscr_rn_builtin.c:190:1:
internal compiler error: in extract_insn, at recog.c:2305
0x571507 _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
0x571523 _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
0x570a10 extract_insn(rtx_insn*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/recog.c:2305
0x7b75bf instantiate_virtual_regs_in_insn
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:1605
0x7b75bf instantiate_virtual_regs
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:1975
0x7b75bf execute
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:2024