[Bug tree-optimization/80618] New: [8 regression] test case gcc.dg/pr50310-2.c fails with ICE starting with 247544

["seurer at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80618

            Bug ID: 80618
           Summary: [8 regression] test case gcc.dg/pr50310-2.c fails with
                    ICE starting with 247544
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

spawn /home/seurer/gcc/build/gcc-trunk/gcc/xgcc
-B/home/seurer/gcc/build/gcc-trunk/gcc/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -lm -o
./pr50310-2.exe
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c: In function
'main':
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c:47:1: error:
unrecognizable insn:
(insn 361 360 176 2 (set (reg:V2DF 342)
        (not:V2DF (ior:V2DF (reg:V2DF 470)
                (reg:V2DF 471))))
"/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c":30 -1
     (nil))
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c:47:1: internal
compiler error: in extract_insn, at recog.c:2311
0x1087afb3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/seurer/gcc/gcc-trunk/gcc/rtl-error.c:108
0x1087b017 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /home/seurer/gcc/gcc-trunk/gcc/rtl-error.c:116
0x1083f6b7 extract_insn(rtx_insn*)
        /home/seurer/gcc/gcc-trunk/gcc/recog.c:2311
0x111c4b87 decompose_multiword_subregs
        /home/seurer/gcc/gcc-trunk/gcc/lower-subreg.c:1467
0x111c62cb execute
        /home/seurer/gcc/gcc-trunk/gcc/lower-subreg.c:1734
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
compiler exited with status 1
output is:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c: In function
'main':
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c:47:1: error:
unrecognizable insn:
(insn 361 360 176 2 (set (reg:V2DF 342)
        (not:V2DF (ior:V2DF (reg:V2DF 470)
                (reg:V2DF 471))))
"/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c":30 -1
     (nil))
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c:47:1: internal
compiler error: in extract_insn, at recog.c:2311
0x1087afb3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/seurer/gcc/gcc-trunk/gcc/rtl-error.c:108
0x1087b017 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /home/seurer/gcc/gcc-trunk/gcc/rtl-error.c:116
0x1083f6b7 extract_insn(rtx_insn*)
        /home/seurer/gcc/gcc-trunk/gcc/recog.c:2311
0x111c4b87 decompose_multiword_subregs
        /home/seurer/gcc/gcc-trunk/gcc/lower-subreg.c:1467
0x111c62cb execute
        /home/seurer/gcc/gcc-trunk/gcc/lower-subreg.c:1734
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

FAIL: gcc.dg/pr50310-2.c (internal compiler error)
FAIL: gcc.dg/pr50310-2.c (test for excess errors)
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c:47:1: error:
unrecognizable insn:
(insn 361 360 176 2 (set (reg:V2DF 342)
        (not:V2DF (ior:V2DF (reg:V2DF 470)
                (reg:V2DF 471))))
"/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c":30 -1
     (nil))
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/pr50310-2.c:47:1: internal
compiler error: in extract_insn, at recog.c:2311
0x1087afb3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/seurer/gcc/gcc-trunk/gcc/rtl-error.c:108
0x1087b017 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /home/seurer/gcc/gcc-trunk/gcc/rtl-error.c:116
0x1083f6b7 extract_insn(rtx_insn*)
        /home/seurer/gcc/gcc-trunk/gcc/recog.c:2311
0x111c4b87 decompose_multiword_subregs
        /home/seurer/gcc/gcc-trunk/gcc/lower-subreg.c:1467
0x111c62cb execute
        /home/seurer/gcc/gcc-trunk/gcc/lower-subreg.c:1734

UNRESOLVED: gcc.dg/pr50310-2.c compilation failed to produce executable