[Bug testsuite/112376] New: [14 Regression] gcc.dg/tree-ssa/ssa-dom-thread-7.c was not adjusted for aarch64 case

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112376

            Bug ID: 112376
           Summary: [14 Regression] gcc.dg/tree-ssa/ssa-dom-thread-7.c was
                    not adjusted for aarch64 case
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: testsuite-fail
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

So after r13-1998-g409978d58dafa689c5b3f85013, the !aarch64 case was updated
but the aarch64 was not. I suspect the testcase just needs to be updated.

The testcase has:
```
/* aarch64 has the highest CASE_VALUES_THRESHOLD in GCC.  It's high enough
   to change decisions in switch expansion which in turn can expose new
   jump threading opportunities.  Skip the later tests on aarch64.  */
/* { dg-final { scan-tree-dump-not "Jumps threaded"  "dom3" { target { !
aarch64*-*-* } } } } */
/* { dg-final { scan-tree-dump "Jumps threaded: 9"  "thread2" { target { !
aarch64*-*-* } } } } */
/* { dg-final { scan-tree-dump "Jumps threaded: 18"  "thread2" { target {
aarch64*-*-* } } } } */
```