[Bug target/123470] [13/14/15/16 Regression] ICE in expand_stack_alignment with passing a 32byte vector to main

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123470

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.5.3
      Known to fail|                            |15.2.0, 4.6.4
   Last reconfirmed|                            |2026-01-08
   Target Milestone|---                         |13.5
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |ice-on-valid-code
          Component|c                           |target
             Target|                            |x86_64
            Summary|ICE in                      |[13/14/15/16 Regression]
                   |expand_stack_alignment      |ICE in
                   |                            |expand_stack_alignment with
                   |                            |passing a 32byte vector to
                   |                            |main
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
typedef int V __attribute__((__vector_size__(8 * sizeof(int))));
int main(V x) {}
```