On Wed, Mar 21, 2018 at 01:40:08PM +0100, Martin Liška wrote:
> 2018-03-21 Martin Liska <mli...@suse.cz>
>
> PR target/84988
> * config/i386/i386.c (ix86_function_arg_advance): Do not call
> chkp_type_bounds_count if MPX is not enabled.
> ---
> gcc/config/i386/i386.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
> index 5b1e962dedb..0693f8fc451 100644
> --- a/gcc/config/i386/i386.c
> +++ b/gcc/config/i386/i386.c
> @@ -8618,7 +8618,8 @@ ix86_function_arg_advance (cumulative_args_t cum_v,
> machine_mode mode,
> if (cum->caller)
> cfun->machine->outgoing_args_on_stack = true;
>
> - cum->bnds_in_bt = chkp_type_bounds_count (type);
> + if (type && POINTER_BOUNDS_TYPE_P (type))
> + cum->bnds_in_bt = chkp_type_bounds_count (type);
This is weird. POINTER_BOUNDS_TYPE_P (type)
is TREE_CODE (type) == POINTER_BOUNDS_TYPE,
and for POINTER_BOUNDS_TYPE chkp_type_bounds_count will just unconditionally
return 0.
Jakub
