On 10/10/06, Ian Lynagh
On Tue, Oct 10, 2006 at 01:31:58PM +0200, Matthias Fischmann wrote:
What qualifies as constant applicable form, and why is it not labelled in a more informative way?
CAFs are, AIUI, things that are just values (i.e. things that don't take an argument) that have been floated up to the top level.
Actually, I don't know if this is a ghc bug but I was profiling last week and a majority of the time/allocation was done in a CAF in a module which didn't seem to be doing much work. Turned out in my case that the module in question imported a function from another package which was doing a tremendous amount of work. It wasn't until I used -caf-all that I could see the real culprit. So, I guess a CAF can also be a function in a library you're using. And I say function here because the work horse definetly was not a CAF. It was hPutXml from HaXml. The lesson for me was that -caf-all is handy to know about. Jason