[Haskell-cafe] Unrecognized function symbols in .prof

[Daniel Fischer]

On Tuesday 08 February 2011 22:18:14, Roman Cheplyaka wrote:
> * Iavor Diatchki <iavor.diatchki at gmail.com> [2011-02-07 23:45:58-0800]
>
> > 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.
>
> IIRC they are generated at random each time.
>

Yes, but if you -ddump-simpl the profiling compilation, the profiling 
symbols should be those in the generated core, shouldn't they?

Unfortunately, that won't help Lee since his mysterious symbols come from a 
library (unless he goes to the trouble of unpacking the library and 
recompiling it in his source tree to get the symbols).

> > On Mon, Feb 7, 2011 at 11:12 PM, Lee Pike <leepike at 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