Compile time macro trouble.

[Dan Olson via digitalmars-d-ldc]

Dan Olson <gorox at comcast.net> writes:

> Taylor Hillegeist <taylorh140 at gmail.com> writes:
>
>> I'm just trying to get more comfortable with working on
>> microcontrollers with d. The good news is that I got a simple example
>> running. An led blinking three colors!

That is cool!

> Taylor, this should help:
>
> Change your function to a template, and then it will get inlined (add the
> extra, empty parens).
>
> uint32_t SIM_SOPT2_TPMSRC()(uint32_t x)  {
>   return ((x << SIM_SOPT2_TPMSRC_SHIFT) & SIM_SOPT2_TPMSRC_MASK);
> }
>
> I think LDC only inlines regular functions when they are in the same
> module.  But templates get inlined across modules.
>
> Make sure you are using LDC ltsmaster branch since it has some needed
> improvements for ARM, although thumb is not well tested except on iOS
> (but that is a different fork).

Oh, and compile with optimizer -O to get template inlining.