DMD compilation speed

[Vladimir Panteleev via Digitalmars-d]

On Tuesday, 31 March 2015 at 05:42:02 UTC, ketmar wrote:
> i think that DDMD can start with GC turned off, and 
> automatically turn it
> on when RAM consumption goes over 1GB, for example. this way 
> small-sized
> (and even middle-sized) projects without heavy CTFE will still 
> enjoy
> "nofree is fast" strategy, and big projects will not eat the 
> whole box'
> RAM.

Recording the information necessary to free memory costs 
performance (and more memory) itself. With a basic 
bump-the-pointer scheme, you don't need to worry about page sizes 
or free lists or heap fragmentation - all allocated data is 
contiguous, there is no metadata, and you can't back out of that.