Anecdotal information, perhaps, since this concerns the CCS C compiler.
When I code an interrupt in the second style, the compiler/optimiser looks
and sees exactly one call to the function, and it compiles it as in the
first style.  So, very often, the compiler is already smarter than I am.
YCMV, but good to know.

Barry


On Wed, Aug 24, 2011 at 5:58 PM, Nathan House <nathanpiclist@gmail.com>wrot=
e:

>
> Is there any performance benefit using the ASM goto statement in the
> interrupt vector, like this:
>
> void interrupt_at_high_vector(void)
> {
>        _asm GOTO high_isr _endasm
> }
>
> As opposed to just calling the function c-style, like this?:
>
> void interrupt_at_high_vector(void)
> {
>        high_isr();
> }
>
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