Can compiler profile itself?

[Profile Anaysis via Digitalmars-d-learn]

On Wednesday, 25 January 2017 at 12:49:05 UTC, Stefan Koch wrote:
> On Tuesday, 24 January 2017 at 23:25:12 UTC, Profile Anaysis 
> wrote:
>> I am trying to compile some code and it takes around 6 
>> seconds. Even if I change one line in one module, it takes the 
>> same time. There are about 20 different d modules.
>>
>> [...]
>
> yes the compiler can be used to profile itself.
> build it with make ENABLE_PROFILE=1
>
> If your code is overly slow you are probably using recursive 
> variaidic templates.

Would it not be easier to have this feature as a command line 
argument that enables it in the compiler or include a compiler 
version that does this?

Not all everyone is good at building from sources...