https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105970
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #1)
> Probably something like:
>
> diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
> index 3d189e124e4..f158cc3aaea 100644
> --- a/gcc/config/i386/i386.cc
> +++ b/gcc/config/i386/i386.cc
> @@ -3348,7 +3348,7 @@ ix86_function_arg (cumulative_args_t cum_v, const
> function_arg_info &arg)
> if (POINTER_TYPE_P (arg.type))
> {
> /* This is the pointer argument. */
> - gcc_assert (TYPE_MODE (arg.type) == Pmode);
> + gcc_assert (TYPE_MODE (arg.type) == ptr_mode);
This looks reasonable since pointer mode should be ptr_mode.
> /* It is at -WORD(AP) in the current frame in interrupt and
> exception handlers. */
> reg = plus_constant (Pmode, arg_pointer_rtx, -UNITS_PER_WORD);
>
> Pointer mode and Pmode can be distinct for x32 target. However, I have no
> idea what goes into interrupt frame for x32. Let's ask HJ.
