https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87516

            Bug ID: 87516
           Summary: [9 Regression] AArch64 bootstrap ICEs in
                    ipa-fnsummary.c:2492
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

typedef __Int16x8_t int16x8_t;
typedef __Uint16x8_t uint16x8_t;
void fn1(uint16x8_t __a) {
  __builtin_aarch64_reduc_plus_scal_v8hi((int16x8_t)__a);
}


The above reduced testcase (from the expansion of the vaddvq_u16 aarch64
intrinsic) ICEs on aarch64 at all optimisation levels with:

lex.ii:5:1: internal compiler error: in compute_fn_summary, at
ipa-fnsummary.c:2492
5 | }
  | ^
0xbe6adf compute_fn_summary(cgraph_node*, bool)
        $SRC/gcc/ipa-fnsummary.c:2492
0xbe6cfb compute_fn_summary_for_current
        $SRC/gcc/ipa-fnsummary.c:2502
0xbe6cfb execute
        $SRC/gcc/ipa-fnsummary.c:3516
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.


I suspect this is to do with target options mismatch or something

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