Estimated hours taken: 60
User-guided type specialization.
compiler/prog_data.m:
compiler/prog_io_pragma.m:
compiler/modules.m:
compiler/module_qual.m:
compiler/mercury_to_mercury.m:
Handle `:- pragma type_spec'.
compiler/prog_io_pragma.m:
Factor out some common code to parse predicate names with arguments.
compiler/hlds_module.m:
Added a field to the module_sub_info to hold information about
user-requested type specializations, filled in by make_hlds.m
and not used by anything after higher_order.m.
compiler/make_hlds.m:
For each `:- pragma type_spec' declaration, introduce a new predicate
which just calls the predicate to be specialized with the
specified argument types. This forces higher_order.m to produce
the specialized versions.
compiler/higher_order.m:
Process the user-requested type specializations first to ensure
that they get the correct names.
Allow partial matches against user-specified versions, e.g.
map__lookup(map(int, list(int)), int, list(int)) matches
map__lookup(map(int, V), int, V).
Perform specialization where a typeclass constraint matches a
known instance, but the construction of the typeclass_info is
done in the calling module.
Give slightly more informative progress messages.
compiler/dead_proc_elim.m:
Remove specializations for dead procedures.
compiler/prog_io_util.m:
Change the definition of the `maybe1' and `maybe_functor' types
to avoid the need for copying to convert between `maybe1'
and `maybe1(generic)'.
Changed the interface of `make_pred_name_with_context' to allow
creation of predicate names for type specializations which describe
the type substitution.
compiler/make_hlds.m:
compiler/prog_io_pragma.m:
Make the specification of pragma declarations in error
messages consistent. (There are probably some more to
be fixed elsewhere for termination and tabling).
compiler/intermod.m:
Write type specialization pragmas for predicates declared
in `.opt' files.
compiler/mercury_to_mercury.m:
Export `mercury_output_item' for use by intermod.m.
compiler/options.m:
Add an option `--user-guided-type-specialization' enabled
with `-O2' or higher.
compiler/handle_options.m:
`--type-specialization' implies `--user-guided-type-specialization'.
compiler/hlds_goal.m:
Add predicates to construct constants. These are duplicated
in several other places, I'll fix that as a separate change.
compiler/type_util.m:
Added functions `int_type/0', `string_type/0', `float_type/0'
and `char_type/0' which return the builtin types.
These are duplicated in several other places,
I'll fix that as a separate change.
library/private_builtin.m:
Added `instance_constraint_from_typeclass_info/3' to extract
the typeclass_infos for a constraint on an instance declaration.
This is useful for specializing class method calls.
Added `thread_safe' to various `:- pragma c_code's.
Added `:- pragma inline' declarations for `builtin_compare_*', which
are important for user-guided type specialization. (`builtin_unify_*'
are simple enough to go in the `.opt' files automatically).
compiler/polymorphism.m:
`instance_constraint_from_typeclass_info/3' does not need type_infos.
Add `instance_constraint_from_typeclass_info/3' to the
list of `typeclass_info_manipulator's which higher_order.m
can interpret.
NEWS:
doc/reference_manual.texi:
doc/user_guide.texi
Document the new pragma and option.
tests/invalid/Mmakefile:
tests/invalid/type_spec.m:
tests/invalid/type_spec.err_exp:
Test error reporting for invalid type specializations.
tests/hard_coded/Mmakefile:
tests/invalid/type_spec.m:
tests/invalid/type_spec.exp:
Test type specialization.
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