Hi Lee,I would also guess that these are probably the implementations of equality in the given modules.
One way to test this would be to name the equality function explicitly. For example, something like this:
myEquality x y = ...
instance Eq MyType where (==) = myEquality
Another option would be to look at the generated core by using -ddump-simpl when compiling. This will generate a whole bunch of output, which you can redirect to a file and the search for the mysterious symbols inside.
Hope this helps,
-Iavor
On Mon, Feb 7, 2011 at 11:12 PM, Lee Pike
<leepike@gmail.com> wrote:
Hi,
I am profiling a Haskell program using GHC, and after executing the
program with +RTS -p, I get a .prof file that lists the cost centers
of the program. Some of the cost centers listed are for function
symbols that do not exist in the given module. For example, I have in
my .prof file:
COST CENTRE MODULE %time %alloc
==_a2MT Foo 19.8 0.0
==_a2R8 Foo 17.8 0.0
==_a2Bg Bar 13.7 0.0
.... ....
It appears these are generated symbols; how do I find out what those
function symbols correspond to? (In this case, my assumption is that
these symbols refer to instances of the Eq class, but I'm not sure.)
[I couldn't find anything about this in the GHC online documentation
or via Googling, but sorry if I missed it.]
Thanks,
Lee
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