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?

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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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