[Bug target/111107] i686-w64-mingw32 does not realign stack when __attribute__((aligned)) or __attribute__((vector_size)) are used

[lh_mouse at 126 dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111107

--- Comment #22 from LIU Hao <lh_mouse at 126 dot com> ---
(In reply to Zeb Figura from comment #0)
> Minimal example:
> 
> typedef int myint[4] __attribute__((aligned(16)));
> 
> extern void g(void *);
> 
> void f(void)
> {
>     myint a;
>     g(&a);
> }
> 
>

Would you please check whether the commit above fixes the issue?

I have bootstrapped GCC 15.1 on i686-w64-mingw32 with a backported patch, and
compiling your example I get:

```
E:\lh_mouse\Desktop>gcc test.c -mno-sse -O2 -c

E:\lh_mouse\Desktop>objdump -drw test.o

test.o:     file format pe-i386


Disassembly of section .text:

00000000 <_f>:
   0:   55                      push   ebp
   1:   89 e5                   mov    ebp,esp
   3:   83 e4 f0                and    esp,0xfffffff0
   6:   8d 64 24 e0             lea    esp,[esp-0x20]
   a:   8d 44 24 10             lea    eax,[esp+0x10]
   e:   89 04 24                mov    DWORD PTR [esp],eax
  11:   e8 00 00 00 00          call   16 <_f+0x16>     12: DISP32      _g
  16:   89 ec                   mov    esp,ebp
  18:   5d                      pop    ebp
  19:   c3                      ret
```