Accepted & committed, thank you for your contribution,
Claudiu
> -----Original Message-----
> From: Alexey Brodkin [mailto:abrod...@synopsys.com]
> Sent: Friday, April 06, 2018 6:02 PM
> To: gcc-patches@gcc.gnu.org
> Cc: Claudiu Zissulescu <claz...@synopsys.com>; Alexey Brodkin
> <abrod...@synopsys.com>
> Subject: [PATCH] [ARC] Fix stack usage info for naked functions.
>
> When code containing "naked" function gets compiled with '-fstack-usage'
> compiler prints the following warning:
> ---------------------------------->8-----------------------------
> board/synopsys/hsdk/hsdk.c: In function 'hsdk_core_init_f':
> board/synopsys/hsdk/hsdk.c:345:1: warning: stack usage computation not
> supported for this target
> }
> ^
> ---------------------------------->8-----------------------------
>
> Even though stack calculation makes no sense for "naked" function
> we still need to correctly report stack size back to make compiler
> happy.
>
> This problem was caught in U-Boot here:
> https://lists.denx.de/pipermail/u-boot/2018-March/324325.html
>
> The same fix was done earlier for ARM, see:
> "config/arm/arm.c (arm_expand_prologue): Set the stack usage to 0 "
> https://github.com/gcc-mirror/gcc/commit/023a7c5dd37
>
> gcc/
> 2018-04-06 Alexey Brodkin <abrod...@synopsys.com>
>
> * config/arc/arc.c (arc_expand_prologue): Set stack usage info
> also for naked functions.
> ---
> gcc/config/arc/arc.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
> index 32fcb81880a2..3cb4ba5b4dd7 100644
> --- a/gcc/config/arc/arc.c
> +++ b/gcc/config/arc/arc.c
> @@ -3149,7 +3149,11 @@ arc_expand_prologue (void)
>
> /* Naked functions don't have prologue. */
> if (ARC_NAKED_P (fn_type))
> - return;
> + {
> + if (flag_stack_usage_info)
> + current_function_static_stack_size = 0;
> + return;
> + }
>
> /* Compute total frame size. */
> size = arc_compute_frame_size ();
> --
> 2.14.3
