[PATCH v2 0/4] MR375: ntdll: Fixes for runtime 64-bit shift functions.

[Jinoh Kang (@iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/ntdll/large_int.c:
> +
>  /******************************************************************************
>   *        _allshl   (NTDLL.@)
> - *
> - * Shift a 64 bit integer to the left.
> - *
> - * PARAMS
> - *  a [I] Initial number.
> - *  b [I] Number to shift a by to the left.
> - *
> - * RETURNS
> - *  The left-shifted value.
>   */
> -LONGLONG WINAPI _allshl( LONGLONG a, LONG b )
> +__ASM_GLOBAL_FUNC( _allshl,
> +                   "xchgl (%esp),%ecx\n\t"
Maybe a nit, and this pattern also resides in other preëxisting code already, but do we _really_ want to use a full memory barrier in such cases?

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/375#note_3467