[MLton] mlton code generation
Tue, 15 Mar 2005 13:02:53 -0800 (PST)
Thanks Matthew. I'll give your suggestions a try.
--- Matthew Fluet <firstname.lastname@example.org> wrote:
> > Is there an easy way to instruct mlton to somehow show the code that it is
> > generating for a user function.
> If you mean finding the exact sequence of C/assembly generated due to a
> fun f (...) = ...
> in the source program, then you might try using the profiling
> infrastructure. When a program is compiled with profiling, the front-end
> embeds pseudo-operations denoting the entry and exit of each function,
> which are preserved by the various optimizations and transformations, and
> should delineate the code correspoinding to a particular source function
> in the generated code.
> Unfortunately, translating back from the MLtonProfileNNN labels to source
> code locations is something handled automatically by the mlprof tool, but
> could be a bit cumbersome to do by hand. It probably wouldn't be too hard
> to augment either to compiler or mlprof to do this. Then you could find
> all the MLtonProfileNNN labels associated with the function of interest
> and look for those labels.
> You might also have luck with the -keep ssa2 -keep machine flags in
> conjunction with a -profile flag. The SSA2 intermediate language
> displays Enter/Leave pseudo-operations with the name of source
> function/locations while the Machine intermediate language uses
> MLtonProfileNNN labels. These two intermediate languages are only one
> lowering apart, so you might be able to find a non-profile label in the
> SSA2 IL near the beginning of the function you in which you are
> interested, and hope to find the same label in the Machine IL, now near
> the corresponding MLtonProfileNNN label. Now you can look for that
> MLtonProfileNNN label in the generated C or assembly.
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