[Bug rtl-optimization/83098] New: [8 regression] ICE in assert_rtx_eq_at, at selftest-rtl.c:57

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83098

            Bug ID: 83098
           Summary: [8 regression] ICE in assert_rtx_eq_at, at
                    selftest-rtl.c:57
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
            Target: i386-pc-solaris2.11, i686-pc-linux-gnu

Between 20171120 (r254958) and 20171121 (r255019) bootstrap broke on 32-bit
Solaris/x86 and
32-bit Linux/x86 in stage2:

/var/gcc/regression/trunk/4.10.10-gcc-gas-gld-32/build/./gcc/xgcc
-B/var/gcc/regression/trunk/4.10.10-gcc-gas-gld-32/build/./gcc/ -xc -nostdinc
/dev/null -S -o /dev/null
-fself-test=/vol/gcc/src/hg/trunk/local/gcc/testsuite/selftests
/vol/gcc/src/hg/trunk/local/gcc/simplify-rtx.c:6622: test_vector_ops_series:
FAIL: ASSERT_RTX_EQ (series_0_r, simplify_unary_operation (NEG, mode,
series_0_nr, mode))
  expected: (vec_series:V4QI (const_int 0 [0])
    (reg:QI 88))
  actual: (vec_series:V4QI (const_int 51 [0x33])
    (reg:QI 88))
cc1: internal compiler error: in assert_rtx_eq_at, at selftest-rtl.c:57

  Rainer