Marcus Clyne wrote:
Hi,
Am I right in saying that defining a function like
func_name (my_type_t * __restrict);
is pointless, because there are no other pointers that the pointer could
overlap with?
Maybe, if there are no global variables.
However, __restrict appears to be a BSD version of C99 restrict or gcc
__restrict__
Can anyone explain what GCC does differently for the two following
definitions:
func1 (my_type_t * __restrict, my_type_t *__restrict);
AND
func2 (my_type_t *, my_type_t *);
?
You may need an example relevant to your own usage, where you could
discover (perhaps by -S or other enabled phase output) what those
differences are. One of the more common uses of * restrict is to enable
auto-vectorization.
