I was going through all of the tags gettn' used to my fresh DM compiler (love it) and in optimization there was a rather long tag called 'expensive optimization' Th DM website didn't have anything and google just brought up car engines.
What does it do?

If the site doesn't have any info, contact then directly.

GCC has a similar tag:

-fexpensive-optimizations
Perform a number of minor optimizations that are relatively expensive.

I'd venture that "expensive" here means time-consuming to the compiler. Your code might not even contain the kind of stuff that such optimizations target, though.

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