Commit Graph

32 Commits

Author SHA1 Message Date
Zoltan Somogyi
155bc71d72 Make foreign_procs their own top-level item kind.
compiler/prog_item.m:
    Change foreign_procs from being one kind of impl_pragma item
    to being their own item kind. Because of this, the changes to
    some of the modules listed below delete "pragma" from the names
    of predicates and types referring to foreign_procs.

    Include foreign_proc items in parse_tree_module_srcs and
    parse_tree_plain_opts, the two kinds of parse trees that may contain
    foreign_procs.

compiler/make_hlds_separate_items.m:
    Gather foreign procs independently of impl pragmas.

compiler/make_hlds_passes.m:
    Add foreign_procs from the parse_tree_module_src and any
    parse_tree_plain_opts to the HLDS at the same time as we add
    foreign_procs generated by the compiler to implement solver types
    and mutables. Document the reason for this.

    Document also the reason why we should add all marker pragmas
    just before we do this. Document the reason why two tests will fail
    until that, or something similar, is done.

compiler/add_foreign_proc.m:
    Delete a test that was required only because we couldn't guarantee
    the relative order of adding foreign_procs and pragmas that mark
    predicates as external on one backend.

compiler/module_qual.qual_errors.m:
    Add foreign_procs as a possible context for errors during qualification.

compiler/status.m:
    Add a comment documented an old issue.

compiler/add_mutable_aux_preds.m:
compiler/add_pragma.m:
compiler/add_pragma_tabling.m:
compiler/add_solver.m:
compiler/check_module_interface.m:
compiler/comp_unit_interface.m:
compiler/convert_parse_tree.m:
compiler/coverage_profiling.m:
compiler/dep_par_conj.m:
compiler/det_analysis.m:
compiler/equiv_type.m:
compiler/foreign.m:
compiler/get_dependencies.m:
compiler/goal_util.m:
compiler/grab_modules.m:
compiler/hlds_goal.m:
compiler/intermod.m:
compiler/item_util.m:
compiler/ml_foreign_proc_gen.m:
compiler/module_qual.collect_mq_info.m:
compiler/module_qual.qualify_items.m:
compiler/parse_pragma_foreign.m:
compiler/parse_tree_out.m:
compiler/parse_tree_out_pragma.m:
compiler/pragma_c_gen.m:
compiler/prog_item_stats.m:
compiler/prog_mutable.m:
compiler/recompilation.version.m:
compiler/structure_sharing.domain.m:
compiler/table_gen.m:
compiler/tabling_analysis.m:
compiler/term_util.m:
compiler/termination.m:
compiler/trailing_analysis.m:
compiler/prog_data_foreign.m:
compiler/unify_proc.m:
    Conform to the changes above.
2023-08-04 11:42:46 +02:00
Zoltan Somogyi
2be5342e1b Convert more middle passes to use var_tables.
compiler/complexity.m:
compiler/coverage_profiling.m:
compiler/deep_profiling.m:
compiler/dep_par_conj.m:
compiler/par_loop_control.m:
compiler/size_prof.m:
compiler/tabling_analysis.m:
    Convert these passes to use var_tables. The changes below exist
    to support the changes to these modules.

    In some places, improve argument order.

compiler/var_table.m:
    Add a new way to specify the name of a variable to be created.

compiler/goal_util.m:
    Generalize a predicate to be able to use any var type source.

    Replace some uses of bools with bespoke types.

    In some places, improve argument order.

compiler/instmap.m:
    Provide a version of instmap_changed_vars that takes a var_table instead
    of a var_types.

compiler/make_goal.m:
    Provide new versions of the predicates that create variables to hold
    constants, versions that use var_tables instead of varsets and vartypes.

compiler/polymorphism_type_info.m:
    Provide versions of three predicates that take var_table arguments
    instead of var_types arguments.

    Refactor some code to minimize the code duplication needed for this.
2022-04-18 02:37:16 +10:00
Zoltan Somogyi
ea4f95a7ed Use var_tables in lco.m, and when dumping goals.
Since this is the first converted module that dumps out goals when
debugging trace flags are enabled, this required generalizing the code
that does that, to take either varsets or var_tables as a means of
specifying the names of variables. We do this via a new type,
var_name_source, which contains either a varset or a var_table.

Almost all of this diff is there to implement this generalization.
A large part of it affects code in the parse_tree package that we use
to write out the parts of HLDS goals that are defined by types defined
in that package. Since we want to avoid making any part of the parse_tree
package dependent on the hlds package, this required defining the
var_name_source type in the parse_tree package, which in turn requires
var_table.m to be in that same package.

compiler/lco.m:
    Convert this module to use var_tables instead of varsets and vartypes.

compiler/var_table.m:
    Move this module from the hlds package to the parse_tree package.

    To make this, possible, move the parts that required access to the HLDS
    to hlds_pred.m, from where it was usually invoked.

    Export some utility predicates to allow the moved code to work
    in hlds_pred.m without access to the actual definition of the
    var_table type.

    Define the var_name_source type.

    Add some utility functions for use by code writing out variable names.

compiler/hlds_pred.m:
    Add the code moved from var_table.m.

compiler/vartypes.m:
    Move this module from the hlds package to the parse_tree package,
    for symmetry with var_table.m. It did not depend on being in hlds
    in any way.

compiler/hlds.m:
compiler/parse_tree.m:
    Move vartypes.m and var_table.m from the hlds package
    to the parse_tree package.

compiler/hlds_out_goal.m:
    Change all the predicates in this module to take a var_name_source
    instead of a prog_varset.

    Fix some comments.

compiler/hlds_out_util.m:
    Change some of the predicates in this module (those called from
    hlds_out_goal.m) to take a var_name_source instead of a prog_varset.

compiler/parse_tree_out_term.m:
    Provide variants of some existing predicates and functions that take
    var_name_sources instead of varsets. The code of the copies
    duplicates the logic of the originals, though I hope that this
    duplication can be done away with at the end of the transition.
    (The best solution would be to use a typeclass with methods
    that convert vars to their names, but we would want to ensure
    that the compiler can specialize all the affected predicates
    and functions to the two instances of this typeclass, which is
    something that we cannot do yet. In the meantime, the lack of
    any generalization in the old versions preserves their performance.)

tools/sort_imports:
tools/filter_sort_imports:
    A new tool that automatically sorts any occurrences of consecutive
    ":- import_module" declarations in the named files. The sorting is done
    in filter_sort_imports; sort_imports loops over the named files.

    After automatically replacing all occurrences of hlds.{vartypes,var_table}
    in import_module declarations with their parse_tree versions, the updated
    import_module declarations were usually out of order with respect to
    their neighbours. I used this script to fix that, and some earlier
    out-of-order imports.

compiler/accumulator.m:
compiler/add_class.m:
compiler/add_clause.m:
compiler/add_foreign_proc.m:
compiler/add_heap_ops.m:
compiler/add_pragma_type_spec.m:
compiler/add_pred.m:
compiler/add_trail_ops.m:
compiler/analysis.m:
compiler/arg_info.m:
compiler/build_mode_constraints.m:
compiler/bytecode_gen.m:
compiler/call_gen.m:
compiler/check_promise.m:
compiler/closure_analysis.m:
compiler/closure_gen.m:
compiler/code_info.m:
compiler/code_loc_dep.m:
compiler/common.m:
compiler/compile_target_code.m:
compiler/complexity.m:
compiler/const_prop.m:
compiler/constraint.m:
compiler/continuation_info.m:
compiler/convert_parse_tree.m:
compiler/coverage_profiling.m:
compiler/cse_detection.m:
compiler/ctgc.datastruct.m:
compiler/ctgc.util.m:
compiler/dead_proc_elim.m:
compiler/deep_profiling.m:
compiler/deforest.m:
compiler/delay_construct.m:
compiler/delay_partial_inst.m:
compiler/dep_par_conj.m:
compiler/det_analysis.m:
compiler/det_report.m:
compiler/det_util.m:
compiler/direct_arg_in_out.m:
compiler/disj_gen.m:
compiler/distance_granularity.m:
compiler/equiv_type_hlds.m:
compiler/exception_analysis.m:
compiler/file_names.m:
compiler/float_regs.m:
compiler/follow_vars.m:
compiler/format_call.m:
compiler/generate_dep_d_files.m:
compiler/get_dependencies.m:
compiler/goal_expr_to_goal.m:
compiler/goal_mode.m:
compiler/goal_path.m:
compiler/goal_store.m:
compiler/goal_util.m:
compiler/granularity.m:
compiler/hhf.m:
compiler/higher_order.m:
compiler/hlds_clauses.m:
compiler/hlds_code_util.m:
compiler/hlds_error_util.m:
compiler/hlds_goal.m:
compiler/hlds_llds.m:
compiler/hlds_out_pred.m:
compiler/hlds_rtti.m:
compiler/hlds_statistics.m:
compiler/inlining.m:
compiler/inst_check.m:
compiler/inst_test.m:
compiler/inst_user.m:
compiler/instance_method_clauses.m:
compiler/instmap.m:
compiler/intermod.m:
compiler/intermod_analysis.m:
compiler/interval.m:
compiler/introduce_exists_casts.m:
compiler/introduce_parallelism.m:
compiler/item_util.m:
compiler/lambda.m:
compiler/live_vars.m:
compiler/liveness.m:
compiler/llds.m:
compiler/llds_out_data.m:
compiler/llds_out_file.m:
compiler/llds_out_util.m:
compiler/lookup_switch.m:
compiler/loop_inv.m:
compiler/make.module_target.m:
compiler/make.util.m:
compiler/make_goal.m:
compiler/make_hlds_separate_items.m:
compiler/make_hlds_types.m:
compiler/mark_tail_calls.m:
compiler/mercury_compile_mlds_back_end.m:
compiler/middle_rec.m:
compiler/ml_accurate_gc.m:
compiler/ml_args_util.m:
compiler/ml_call_gen.m:
compiler/ml_closure_gen.m:
compiler/ml_code_gen.m:
compiler/ml_code_util.m:
compiler/ml_commit_gen.m:
compiler/ml_disj_gen.m:
compiler/ml_foreign_proc_gen.m:
compiler/ml_gen_info.m:
compiler/ml_lookup_switch.m:
compiler/ml_proc_gen.m:
compiler/ml_simplify_switch.m:
compiler/ml_switch_gen.m:
compiler/ml_tag_switch.m:
compiler/ml_unify_gen.m:
compiler/ml_unify_gen_construct.m:
compiler/ml_unify_gen_deconstruct.m:
compiler/ml_unify_gen_test.m:
compiler/ml_unify_gen_util.m:
compiler/mlds_to_c_data.m:
compiler/mlds_to_c_func.m:
compiler/mlds_to_c_global.m:
compiler/mlds_to_cs_class.m:
compiler/mlds_to_cs_file.m:
compiler/mlds_to_java_data.m:
compiler/mlds_to_java_file.m:
compiler/mlds_to_java_stmt.m:
compiler/mlds_to_java_type.m:
compiler/mmc_analysis.m:
compiler/mode_comparison.m:
compiler/mode_constraints.m:
compiler/mode_debug.m:
compiler/mode_errors.m:
compiler/mode_info.m:
compiler/mode_ordering.m:
compiler/modecheck_call.m:
compiler/modecheck_coerce.m:
compiler/modecheck_goal.m:
compiler/modecheck_unify.m:
compiler/modecheck_util.m:
compiler/modes.m:
compiler/module_cmds.m:
compiler/old_type_constraints.m:
compiler/opt_debug.m:
compiler/optimize.m:
compiler/options_file.m:
compiler/ordering_mode_constraints.m:
compiler/par_loop_control.m:
compiler/parse_item.m:
compiler/parse_string_format.m:
compiler/parse_tree_out_inst.m:
compiler/parse_tree_to_term.m:
compiler/parse_util.m:
compiler/pd_debug.m:
compiler/pd_info.m:
compiler/pd_util.m:
compiler/peephole.m:
compiler/polymorphism.m:
compiler/polymorphism_info.m:
compiler/polymorphism_lambda.m:
compiler/polymorphism_type_class_info.m:
compiler/polymorphism_type_info.m:
compiler/post_typecheck.m:
compiler/pragma_c_gen.m:
compiler/pred_name.m:
compiler/pred_table.m:
compiler/prog_item.m:
compiler/prog_rep.m:
compiler/prop_mode_constraints.m:
compiler/purity.m:
compiler/push_goals_together.m:
compiler/qual_info.m:
compiler/quantification.m:
compiler/rbmm.execution_path.m:
compiler/rbmm.m:
compiler/rbmm.points_to_analysis.m:
compiler/rbmm.points_to_graph.m:
compiler/rbmm.points_to_info.m:
compiler/rbmm.region_resurrection_renaming.m:
compiler/rbmm.region_transformation.m:
compiler/recompilation.used_file.m:
compiler/recompilation.version.m:
compiler/recompute_instmap_deltas.m:
compiler/resolve_unify_functor.m:
compiler/rtti.m:
compiler/rtti_out.m:
compiler/rtti_to_mlds.m:
compiler/saved_vars.m:
compiler/set_of_var.m:
compiler/simplify_goal_call.m:
compiler/simplify_goal_conj.m:
compiler/simplify_goal_disj.m:
compiler/simplify_goal_ite.m:
compiler/simplify_goal_scope.m:
compiler/simplify_goal_switch.m:
compiler/simplify_goal_unify.m:
compiler/simplify_info.m:
compiler/simplify_proc.m:
compiler/size_prof.m:
compiler/smm_common.m:
compiler/ssdebug.m:
compiler/stack_alloc.m:
compiler/stack_layout.m:
compiler/stack_opt.m:
compiler/stm_expand.m:
compiler/store_alloc.m:
compiler/structure_reuse.analysis.m:
compiler/structure_reuse.direct.choose_reuse.m:
compiler/structure_reuse.direct.detect_garbage.m:
compiler/structure_reuse.domain.m:
compiler/structure_reuse.indirect.m:
compiler/structure_reuse.lbu.m:
compiler/structure_reuse.lfu.m:
compiler/structure_sharing.analysis.m:
compiler/structure_sharing.domain.m:
compiler/superhomogeneous.m:
compiler/switch_detection.m:
compiler/switch_gen.m:
compiler/switch_util.m:
compiler/table_gen.m:
compiler/tabling_analysis.m:
compiler/term_constr_build.m:
compiler/term_constr_data.m:
compiler/term_constr_initial.m:
compiler/term_constr_main.m:
compiler/term_constr_main_types.m:
compiler/term_constr_util.m:
compiler/term_pass1.m:
compiler/term_traversal.m:
compiler/term_util.m:
compiler/trace_gen.m:
compiler/trailing_analysis.m:
compiler/transform_llds.m:
compiler/try_expand.m:
compiler/tupling.m:
compiler/type_assign.m:
compiler/type_ctor_info.m:
compiler/type_util.m:
compiler/typecheck.m:
compiler/typecheck_debug.m:
compiler/typecheck_errors.m:
compiler/typecheck_info.m:
compiler/unify_gen_construct.m:
compiler/unify_gen_deconstruct.m:
compiler/unify_proc.m:
compiler/unique_modes.m:
compiler/unneeded_code.m:
compiler/untupling.m:
compiler/unused_args.m:
compiler/unused_imports.m:
compiler/var_locn.m:
compiler/write_deps_file.m:
compiler/write_module_interface_files.m:
    Conform to the changes above.
2022-04-18 02:00:38 +10:00
Zoltan Somogyi
40725f170e Replace ten int cons_ids with one.
We currently have one function symbol in the cons_id type for each
of our ten types of integer constants: signed vs unsigned, and
word-sized, 8-bit, 16-bit, 32-bit and 64-bit. In most places in the compiler,
these are all treated the same, and it gets tedious to have to write
the same logic ten times. This diff therefore changes things so that
the distinction between int constants of these ten types is pushed
to one level lower than the cons_id type.

compiler/prog_data.m:
    Replace the ten cons_ids {int,uint}{,8,16,32,64}_const with just one,
    some_int_const, whose argument now has those function symbols.

    Add some utility functions on integer constants.

compiler/prog_out.m:
    Add a utility predicate for converting int constants to strings.

compiler/parse_tree_to_term.m:
    Add a utility predicate for converting int constants to terms.

compiler/old_type_constraints.m:
    Conform to the changes above.

    Fix an old bug, though this does not matter since this module is unused.

compiler/add_pred.m:
compiler/bytecode_gen.m:
compiler/const_prop.m:
compiler/coverage_profiling.m:
compiler/ctgc.selector.m:
compiler/dead_proc_elim.m:
compiler/deep_profiling.m:
compiler/dep_par_conj.m:
compiler/distance_granularity.m:
compiler/goal_util.m:
compiler/higher_order.m:
compiler/hlds_code_util.m:
compiler/hlds_dependency_graph.m:
compiler/hlds_out_util.m:
compiler/implementation_defined_literals.m:
compiler/inst_check.m:
compiler/intermod.m:
compiler/make_goal.m:
compiler/mercury_to_mercury.m:
compiler/ml_global_data.m:
compiler/mode_util.m:
compiler/modecheck_coerce.m:
compiler/modecheck_goal.m:
compiler/module_qual.qualify_items.m:
compiler/parse_util.m:
compiler/polymorphism.m:
compiler/polymorphism_type_info.m:
compiler/prog_ctgc.m:
compiler/prog_rep.m:
compiler/prog_type.m:
compiler/prog_util.m:
compiler/rbmm.execution_path.m:
compiler/rbmm.region_transformation.m:
compiler/simplify_goal_call.m:
compiler/structure_reuse.direct.choose_reuse.m:
compiler/superhomogeneous.m:
compiler/typecheck.m:
compiler/typecheck_errors.m:
compiler/unused_imports.m:
compiler/xml_documentation.m:
    Conform to the changes above. Use the new utility predicates
    to avoid code duplication.
2021-06-03 23:58:32 +10:00
Peter Wang
615e808266 Represent coerce goals as a type of cast.
compiler/hlds_goal.m:
    Move subtype_coerce from a option of hlds_goal_expr into cast_kind.
    It was useful to identify places where we needed to consider
    coercions separately from other types of casts, but that's done now.

compiler/hlds_pred.m:
    Delete gcid_coerce option of generic_call_id.

compiler/arg_info.m:
compiler/build_mode_constraints.m:
compiler/bytecode_gen.m:
compiler/call_gen.m:
compiler/coverage_profiling.m:
compiler/deep_profiling.m:
compiler/exception_analysis.m:
compiler/float_regs.m:
compiler/follow_vars.m:
compiler/goal_util.m:
compiler/higher_order.m:
compiler/hlds_desc.m:
compiler/hlds_out_goal.m:
compiler/hlds_out_util.m:
compiler/intermod.m:
compiler/interval.m:
compiler/lambda.m:
compiler/live_vars.m:
compiler/ml_call_gen.m:
compiler/ml_code_gen.m:
compiler/mode_constraints.m:
compiler/mode_errors.m:
compiler/modecheck_goal.m:
compiler/old_type_constraints.m:
compiler/post_typecheck.m:
compiler/pre_quantification.m:
compiler/purity.m:
compiler/simplify_goal.m:
compiler/simplify_goal_call.m:
compiler/structure_reuse.direct.detect_garbage.m:
compiler/structure_reuse.indirect.m:
compiler/structure_sharing.analysis.m:
compiler/superhomogeneous.m:
compiler/tabling_analysis.m:
compiler/term_traversal.m:
compiler/trailing_analysis.m:
compiler/tupling.m:
compiler/typecheck.m:
compiler/unique_modes.m:
compiler/unused_imports.m:
    Conform to changes.

compiler/hlds_statistics.m:
    Count coercions as casts, for consistency in terminology.

compiler/prog_rep.m:
    Delete XXX about adding a coerce_rep in addition to cast_rep.
2021-04-14 15:10:18 +10:00
Peter Wang
ac70f6d36b Parse and check coerce expressions.
This change implements parsing, typechecking, and modechecking of
"coerce" expressions from my subtypes proposal, i.e. coerce(Term).
Backends currently will abort if asked to generate code for coercions,
as subtypes do not yet share data representations with their base types,
so most coercions would lead to crashes at runtime anyway.

----------------

compiler/hlds_goal.m:
    Add new type of generic_call to represent coerce expressions.

compiler/hlds_pred.m:
    Add new generic_call_id for coerce expressions.

compiler/superhomogeneous.m:
    Treat var-functor unifications of the form "Var = coerce(Term)"
    as special, producing coerce generic_calls.

----------------

compiler/type_assign.m:
    Add a field to type_assign to hold coerce constraints to be checked,
    or known to be unsatisfiable, in the given type assignment.

compiler/typecheck.m:
compiler/typecheck_errors.m:
    Implement typechecking of coerce expressions.

compiler/prog_type.m:
    Add a predicate type_is_ground_except_vars.

----------------

compiler/check_hlds.m:
    Add new module modecheck_coerce.

compiler/modecheck_coerce.m:
    Implement modechecking of coerce expressions.

compiler/modecheck_goal.m:
    Call modecheck_coerce at a coerce generic call.

compiler/mode_errors.m:
    Add two mode errors relating to coerce expressions.

----------------

compiler/arg_info.m:
compiler/build_mode_constraints.m:
compiler/bytecode_gen.m:
compiler/call_gen.m:
compiler/coverage_profiling.m:
compiler/deep_profiling.m:
compiler/exception_analysis.m:
compiler/float_regs.m:
compiler/follow_vars.m:
compiler/goal_util.m:
compiler/higher_order.m:
compiler/hlds_desc.m:
compiler/hlds_out_goal.m:
compiler/hlds_out_util.m:
compiler/intermod.m:
compiler/interval.m:
compiler/lambda.m:
compiler/live_vars.m:
compiler/ml_call_gen.m:
compiler/ml_code_gen.m:
compiler/mode_constraints.m:
compiler/old_type_constraints.m:
compiler/post_typecheck.m:
compiler/pre_quantification.m:
compiler/tabling_analysis.m:
compiler/term_traversal.m:
compiler/trailing_analysis.m:
compiler/tupling.m:
compiler/unique_modes.m:
compiler/unused_imports.m:
compiler/purity.m:
compiler/simplify_goal.m:
compiler/simplify_goal_call.m:
compiler/structure_reuse.direct.detect_garbage.m:
compiler/structure_reuse.indirect.m:
compiler/structure_sharing.analysis.m:
    Conform to changes.

compiler/prog_rep.m:
    Conform to changes. Reuse cast_rep for coercions for now.

compiler/hlds_statistics.m:
    Count coercions in proc stats.

----------------

tests/invalid/Mercury.options:
tests/invalid/Mmakefile:
tests/invalid/coerce_ambig.err_exp:
tests/invalid/coerce_ambig.m:
tests/invalid/coerce_clobbered.err_exp:
tests/invalid/coerce_clobbered.m:
tests/invalid/coerce_disambig.err_exp:
tests/invalid/coerce_disambig.m:
tests/invalid/coerce_implied_mode.err_exp:
tests/invalid/coerce_implied_mode.m:
tests/invalid/coerce_infer.err_exp:
tests/invalid/coerce_infer.m:
tests/invalid/coerce_instvar.err_exp:
tests/invalid/coerce_instvar.m:
tests/invalid/coerce_mode_error.err_exp:
tests/invalid/coerce_mode_error.m:
tests/invalid/coerce_non_du.err_exp:
tests/invalid/coerce_non_du.m:
tests/invalid/coerce_syntax.err_exp:
tests/invalid/coerce_syntax.m:
tests/invalid/coerce_type_error.err_exp:
tests/invalid/coerce_type_error.m:
tests/invalid/coerce_unify_tvars.err_exp:
tests/invalid/coerce_unify_tvars.m:
tests/invalid/coerce_uniq.err_exp:
tests/invalid/coerce_uniq.m:
tests/invalid/coerce_unreachable.err_exp:
tests/invalid/coerce_unreachable.m:
tests/invalid/coerce_void.err_exp:
tests/invalid/coerce_void.m:
    Add test cases.

tests/typeclasses/arbitrary_constraint_class.m:
tests/typeclasses/arbitrary_constraint_pred_1.m:
tests/typeclasses/arbitrary_constraint_pred_2.m:
    Wrap parentheses around calls to a coerce/1 method
    to prevent them being treated as coerce expressions.

----------------

doc/reference_manual.texi:
    Rewrite chapter on Type conversions (still commented out).
    In particular, the typechecking rules that I had written
    previously were insufficient.

NEWS:
    Mention backwards incompatibility.
2021-03-15 11:16:31 +11:00
Zoltan Somogyi
c1bdd2100b Delete unneeded $module args from aborts. 2019-04-16 04:13:35 +10:00
Zoltan Somogyi
2c21dcc4c0 Avoid an ambiguity.
compiler/hlds_goal.m:
    Change the names of the fields of the hlds_goal structure to avoid
    conflicts with the names of the hlds_goal_expr and hlds_goal_info types.

compiler/coverage_profiling.m:
compiler/deep_profiling.m:
compiler/dep_par_conj.m:
compiler/goal_util.m:
compiler/higher_order.m:
compiler/introduce_parallelism.m:
compiler/middle_rec.m:
compiler/mode_ordering.m:
compiler/modecheck_conj.m:
compiler/modecheck_goal.m:
compiler/ordering_mode_constraints.m:
compiler/par_conj_gen.m:
compiler/par_loop_control.m:
compiler/prog_rep.m:
compiler/stm_expand.m:
compiler/term_constr_build.m:
compiler/tupling.m:
compiler/untupling.m:
    Conform to the change above.
2018-01-16 17:19:04 +11:00
Zoltan Somogyi
b8b23dc51f Replace pairs with bespoke types in foreign_args.
compiler/prog_data_foreign.m:
    Define a type to represent the part of a foreign arg that contains
    the name and mode of the argument.

    Define a type to represent pairing the name and mode of an argument
    (if the argument is actually used) with its box policy.

    Add a utility function.

compiler/add_foreign_proc.m:
compiler/add_trail_ops.m:
compiler/clause_to_proc.m:
compiler/closure_analysis.m:
compiler/complexity.m:
compiler/coverage_profiling.m:
compiler/dep_par_conj.m:
compiler/erl_call_gen.m:
compiler/hlds_goal.m:
compiler/hlds_out_goal.m:
compiler/intermod.m:
compiler/make_hlds_warn.m:
compiler/ml_foreign_proc_gen.m:
compiler/polymorphism.m:
compiler/pragma_c_gen.m:
compiler/table_gen.m:
    Conform to the change in types.

    In several cases, delete the import of the pair module.
    In a few cases, add an import of the prog_data_foreign module.
2017-04-04 02:04:13 +10:00
Zoltan Somogyi
8f761b4968 Remove out_of_line_builtin.
compiler/hlds_goal.m:
    Delete out_of_line_builtin as a possible builtin_state, since we
    haven't had any builtin predicates implemented using out-of-line code
    in a long time, and we almost certainly never will again.
    Even if we did, there is no particular reason to believe that all
    the places that test the builtin_state do the right thing when they see
    an out_of_line_builtin; such decisions haven't had their correctness
    tested in more than a decade.

compiler/bytecode_gen.m:
compiler/code_gen.m:
compiler/coverage_profiling.m:
compiler/deep_profiling.m:
compiler/dep_par_conj.m:
compiler/erl_code_gen.m:
compiler/follow_vars.m:
compiler/goal_form.m:
compiler/hlds_dependency_graph.m:
compiler/hlds_out_goal.m:
compiler/interval.m:
compiler/live_vars.m:
compiler/middle_rec.m:
compiler/ml_code_gen.m:
compiler/pd_cost.m:
compiler/prog_rep.m:
compiler/simplify_goal.m:
compiler/ssdebug.m:
compiler/tupling.m:
    Conform to the above.
2017-03-31 05:10:32 +11:00
Zoltan Somogyi
cfcfde1db7 Simplify the representation of modes of unifications.
Unifications (x = y) have long had two descriptions of their modes.
One is the unify_mode, which used to look like this:
    (initx -> finalx) - (inity -> finaly)
and other is the uni_mode, which used to look like this:
    (initx - inity) -> (finalx - finaly)
Each unification had one unify_mode, and each unification that includes
a function symbol had one uni_mode per argument of that function symbol.

The two forms of mode information looked similar enough to be easily
confusable, but were subtly different. As it turns out, there was no
particular reason for the difference, so this diff eliminates the
uni_mode type, and the difference along with it.

What rationale there was for the uni_mode type was that the two modes
it represented (one for each side of the unification) both had their
initial and final insts directly available. This is not true for modes
in general: a value of the mer_mode type could have the form
"InitInst -> FinalInst" (which this diff renames "from_to_mode(InitInst,
FinalInst)", but could also be a "user_defined_inst(...)", which required
a table lookup to turn it into an initial/final pair of insts. This matters,
because almost all code that processes the modes of unifications
works with the initial and final insts.

This diff therefore creates a new type, from_to_insts, which represents
mode information only in the form of terms such as "from_to_insts(InitInst,
FinalInst)", and makes a unify_mode take two values of this type, not mer_mode,
as arguments.

As discussed on m-rev, this diff also renames the old, deceptively named
"arg_mode" type: its new name is "top_functor_mode".

compiler/prog_data.m:
compiler/hlds_goal.m:
    As mentioned above, avoid using "->" as a function symbol, and replace
    both -> and - with bespoke function symbols.

compiler/mode_util.m:
    Add some utility predicates and functions on the new types, and
    delete the old utility routines that operated on uni_modes.

    Code that uses the new functions and predicates should have a higher level
    of abstraction than the code that used to do the same job "manually".

compiler/*.m:
    Conform to the changes above, using the new utility predicates and
    functions where relevant. In several cases, this required fixing
    confusion of the kind described at the top. In all but one case,
    the confusion affected only variable names, but in one case,
    deconstruct_functor in make_goal.m, it caused a bug. The bug has
    had no effect up till now because deconstruct_functor is called
    only from three places: try_expand.m, stm_expand.m, and untupling.m.
    The incorrect mode (which was the nonsensical ground -> free)
    generated by the code of try_expand.m itself was discarded and
    overwritten when try_expand.m invoked the modechecker. (I don't
    know whether this bugfix makes that invocation redundant or not.)
    The other two modules, stm_expand.m and untupling.m, may do something
    similar, but in any case, they don't yet work for other reasons.
    (A bootcheck with --untupling causes a compiler abort when compiling
    deep_profiler/query.m in stage 2 both without and with this fix.)

    Delete no-longer-needed imports of the pair module (and of some other
    modules).

    Put the arguments of some predicates into a more logical order.

    In bytecode_gen.m, replace clauses with disjunctions, and delete the
    arguments that this step has revealed to be unused.
2016-05-19 10:43:24 +10:00
Zoltan Somogyi
961046dbb0 Avoid using some Mercury keywords.
compiler/prog_data_foreign.m:
compiler/prog_data_pragma.m:
    Avoid using the names of foreign code attributes and pragma components
    as the names of function symbols (and one type) that represent those
    attributes and components. Do this by giving them type-specific prefixes.

    Delete the ref_or_val type, which has been unused since the IL backend
    was deleted.

compiler/*.m
    Conform to the changes above.
2016-05-14 10:24:13 +10:00
Zoltan Somogyi
4ebc3ffa04 Carve four modules out of prog_data.m.
The prog_data.m module is imported by most modules of the compiler; by
359 modules out of 488, to be exact. Yet it has many parts that most of
those 359 modules don't need. This diff puts those parts into four new
modules. The number of imports of these modules:

    348 modules import prog_data.m
     84 modules import prog_data_foreign.m
     62 modules import prog_data_pragma.m
     12 modules import prog_data_event.m
      5 modules import prog_data_used_modules.m

compiler/prog_data_event.m:
compiler/prog_data_foreign.m:
compiler/prog_data_pragma.m:
compiler/prog_data_used_modules.m:
    New modules. They contain the parts of the parse tree that deal
    respectively with the specification of events and event sets,
    interfacing to foreign languages, pragmas, and the sets of used
    (i.e. not unused) modules.

compiler/prog_data.m:
    Delete the stuff that is now in the new modules. Put the remaining parts
    of the module into a logical order.

compiler/parse_tree.m:
compiler/notes/compiler_design.html:
    Include and document the new modules.

compiler/globals.m:
    Move a type here from prog_data.m, since this is where it belongs.

compiler/add_foreign_proc.m:
compiler/add_mutable_aux_preds.m:
compiler/add_pragma.m:
compiler/add_solver.m:
compiler/add_trail_ops.m:
compiler/call_gen.m:
compiler/code_gen.m:
compiler/code_loc_dep.m:
compiler/comp_unit_interface.m:
compiler/compile_target_code.m:
compiler/complexity.m:
compiler/continuation_info.m:
compiler/coverage_profiling.m:
compiler/ctgc.datastruct.m:
compiler/ctgc.livedata.m:
compiler/ctgc.selector.m:
compiler/deep_profiling.m:
compiler/dep_par_conj.m:
compiler/deps_map.m:
compiler/det_analysis.m:
compiler/det_report.m:
compiler/elds_to_erlang.m:
compiler/equiv_type.m:
compiler/erl_call_gen.m:
compiler/exception_analysis.m:
compiler/export.m:
compiler/fact_table.m:
compiler/foreign.m:
compiler/frameopt.m:
compiler/get_dependencies.m:
compiler/goal_form.m:
compiler/goal_util.m:
compiler/granularity.m:
compiler/hlds_goal.m:
compiler/hlds_module.m:
compiler/hlds_out_goal.m:
compiler/hlds_out_module.m:
compiler/hlds_out_pred.m:
compiler/hlds_pred.m:
compiler/inlining.m:
compiler/intermod.m:
compiler/ite_gen.m:
compiler/item_util.m:
compiler/jumpopt.m:
compiler/layout.m:
compiler/layout_out.m:
compiler/live_vars.m:
compiler/livemap.m:
compiler/llds.m:
compiler/llds_out_file.m:
compiler/llds_out_global.m:
compiler/llds_out_instr.m:
compiler/make.dependencies.m:
compiler/make.module_dep_file.m:
compiler/make_hlds.m:
compiler/make_hlds_warn.m:
compiler/mark_tail_calls.m:
compiler/mercury_compile_llds_back_end.m:
compiler/mercury_compile_main.m:
compiler/ml_call_gen.m:
compiler/ml_code_gen.m:
compiler/ml_code_util.m:
compiler/ml_foreign_proc_gen.m:
compiler/ml_proc_gen.m:
compiler/ml_tailcall.m:
compiler/ml_unify_gen.m:
compiler/mlds.m:
compiler/mlds_to_c.m:
compiler/mlds_to_cs.m:
compiler/mlds_to_java.m:
compiler/modecheck_goal.m:
compiler/module_imports.m:
compiler/module_qual.m:
compiler/module_qual.qualify_items.m:
compiler/modules.m:
compiler/opt_debug.m:
compiler/par_conj_gen.m:
compiler/parse_pragma.m:
compiler/parse_tree_out_info.m:
compiler/parse_tree_out_pragma.m:
compiler/pd_cost.m:
compiler/polymorphism.m:
compiler/pragma_c_gen.m:
compiler/proc_gen.m:
compiler/prog_ctgc.m:
compiler/prog_event.m:
compiler/prog_foreign.m:
compiler/prog_item.m:
compiler/prog_out.m:
compiler/prog_util.m:
compiler/purity.m:
compiler/rbmm.points_to_analysis.m:
compiler/rbmm.points_to_graph.m:
compiler/simplify_goal_call.m:
compiler/simplify_goal_scope.m:
compiler/simplify_proc.m:
compiler/smm_common.m:
compiler/stack_layout.m:
compiler/structure_reuse.analysis.m:
compiler/structure_reuse.direct.choose_reuse.m:
compiler/structure_reuse.direct.detect_garbage.m:
compiler/structure_reuse.domain.m:
compiler/structure_reuse.indirect.m:
compiler/structure_sharing.analysis.m:
compiler/structure_sharing.domain.m:
compiler/table_gen.m:
compiler/tabling_analysis.m:
compiler/term_constr_build.m:
compiler/term_constr_initial.m:
compiler/term_constr_main.m:
compiler/term_constr_main_types.m:
compiler/term_constr_pass2.m:
compiler/term_constr_util.m:
compiler/term_errors.m:
compiler/term_pass1.m:
compiler/term_pass2.m:
compiler/term_traversal.m:
compiler/term_util.m:
compiler/termination.m:
compiler/trace_gen.m:
compiler/trailing_analysis.m:
compiler/type_constraints.m:
compiler/typecheck.m:
compiler/unique_modes.m:
compiler/unused_args.m:
compiler/unused_imports.m:
compiler/use_local_vars.m:
compiler/write_deps_file.m:
    Conform to the changes above.
2016-03-13 18:19:31 +11:00
Zoltan Somogyi
3cb166eb07 Delete some unused predicates; add consider_used pragmas for some others. 2015-12-29 01:50:46 +11:00
Mark Brown
b2ae55c29c Change 'none' to 'none_or_default_func' in ho_inst_info.
This value of ho_inst_info is used for first-order values as well as
for functions that have the default inst, and the new name better
reflects that.

Places using this value have been checked for correctness. Issues that
need to be looked at have been marked with XXX, although have not been
addressed in this change.

compiler/prog_data.m:
	Update the type.

compiler/inst_match.m:
	Add XXX comments. This module needs to check for non-default
	function insts in a bunch of places.

compiler/inst_util.m:
	Add XXX comments. We lose information about non-default function
	insts when merging bound and any. The information needs to be
	either preserved or disallowed entirely.

compiler/float_regs.m:
	Add XXX comments. This module may miss cases involving default
	function insts.

compiler/modecheck_unify.m:
	Add XXX comment. We should exclude pred and non-default func
	lambda non-locals from becoming locked, an addition to default
	functions.

compiler/*.m:
	No special handling is required for other modules.
2015-11-16 21:13:04 +11:00
Zoltan Somogyi
cc9912faa8 Don't import anything in packages.
Packages are modules whose only job is to serve as a container for submodules.
Modules like top_level.m, hlds.m, parse_tree.m and ll_backend.m are packages
in this (informal) sense.

Besides the include_module declarations for their submodules, most of the
packages in the compiler used to import some modules, mostly other packages
whose component modules their submodules may need. For example, ll_backend.m
used to import parse_tree.m. This meant that modules in the ll_backend package
did not have to import parse_tree.m before importing modules in the parse_tree
package.

However, this had a price. When we add a new module to the parse_tree package,
parse_tree.int would change, and this would require the recompilation of ALL
the modules in the ll_backend package, even the ones that did NOT import ANY
of the modules in the parse_tree package.

This happened even at one remove. Pretty much all modules in every one
of the backend have to import one or more modules in the hlds package,
and they therefore have import hlds.m. Since hlds.m imported transform_hlds.m,
any addition of a new middle pass to the transform_hlds package required
the recompilation of all backend modules, even in the usual case of the two
having nothing to do with each other.

This diff removes all import_module declarations from the packages,
and replaces them with import_module declarations in the modules that need
them. This includes only a SUBSET of their child modules and of the non-child
modules that import them.
2015-11-13 15:03:20 +11:00
Zoltan Somogyi
0821b301f2 Require that types/insts/modes in interfaces be defined in the interface.
compiler/module_qual.m:
    The interface of a module A contains items (e.g. predicate declarations)
    that refer to entities such as types, insts, modes etc. They may refer
    to those entities if (a) they are defined in the interface of module A,
    (b) in a parent module of module A, or (c) if they are imported from
    another module, module B, which is imported into module A in the interface
    of module A.

    The old algorithm that attempted to enforce this requirement had a basic
    design fault: it based the decision as to whether the use of an entity
    in the interface was legal solely on the name of the module that defined
    that entity. This correctly implements tests (b) and (c), but it does
    not even attempt to implement the interface test part of (a).
    It therefore allowed exported items to refer to nonexported entities.

    This diff changes the whole design approach to the test. Instead of
    keeping a list of modules *all* of whose entities may be used in the
    interface of the current module, record for *every* entity whether
    it may be used in the interface. Set the permissions differently
    in the interface and implementation sections of the current module.

    Improve the formatting of the ambiguity error message.

NEWS:
    Announce the stricter enforcement of the documented language rules,
    in a new section for potentially compatibility-breaking changes.

compiler/check_typeclass.m:
    Delete a test for a special case of the situation that module_qual.m
    now tests for. If this problem occurs, module_qual.m will pick it up,
    and check_typeclass.m will never even be invoked, so this copy of the test
    can never succeed.

library/hash_table.m:
    Fix code that violated the language rules: we export a type that
    includes another type, but didn't export the second type. We now do.

browser/declarative_analyser.m:
browser/declarative_edt.m:
compiler/coverage_profiling.m:
    Fix code that violated the language rules. We used to export predicates
    and functions whose argument types included nonexported types. As it
    happens, none of those predicates and functions actually need to be
    exported, so keep them private.

    In coverage_profiling.m, don't abstract export a type that is not
    used outside the module, and give a function a name that doesn't
    clash with a type name.

tests/invalid/bug17.{m,err_exp}:
    A new test case to test the error message we get if the module interface
    refers to a nonexported type.

tests/invalid/bad_instance.err_exp:
    This test case used to get two kinds of errors, one of which was
    the illegal use of nonexported type in an exported abstract instance
    declaration. We now discover this error earlier, and stop after we
    do so. Update the expected error message.

tests/invalid/bad_instance2.{m,err_exp}:
    New test case: a modified copy of bad_instance.m, testing the other
    kind of error originally tested by bad_instance.m.

tests/invalid/instance_no_type.err_exp:
    Update the expected error message.

tests/invalid/Mmakefile:
    Enable the new test cases.

tests/benchmarks/query.m:
tests/hard_coded/unused_float_box_test.m:
tests/valid/bug300.m:
tests/valid/deforest_bug.m:
tests/valid/higher_order4.m:
tests/valid/lambda_recompute.m:
tests/valid/mert.m:
tests/valid/reuse_static.m:
tests/valid/switch_detection_bug2.m:
tests/valid/time_yaowl.m:
tests/warnings/unused_args_test.m:
    Fix code that violated the language rules, typically by exporting
    the type that previously, we illegally used in the module interface.

tests/recompilation/add_type_re.err_exp.2:
    Expect the updated ambiguity error message.
2015-11-11 14:28:57 +11:00
Zoltan Somogyi
0682548bce Convert (C->T;E) to (if C then T else E). 2015-10-28 12:41:16 +11:00
Zoltan Somogyi
62ec97d443 Report imports shadowed by other imports.
If a module has two or more import_module or use_module declarations
for the same module, (typically, but not always, one being in its interface
and one in its implementation), generate an informational message about
each redundant declaration if --warn-unused-imports is enabled.

compiler/hlds_module.m:
    We used to record the set of imported/used modules, and the set of
    modules imported/used in the interface of the current module. However,
    these sets

    - did not record the distinction between imports and uses;
    - did not allow distinction between single and multiple imports/uses;
    - did not record the locations of the imports/uses.

    The first distinction was needed only by module_qual.m, which *did*
    pay attention to it; the other two were not needed at all.

    To generate messages for imports/uses shadowing other imports/uses,
    we need all three, so change the data structure storing such information
    for *direct* imports to one that records all three of the above kinds
    of information. (For imports made by read-in interface and optimization
    files, the old set of modules approach is fine, and this diff leaves
    the set of thus *indirectly* imported module names alone.)

compiler/unused_imports.m:
    Use the extra information now available to generate a
    severity_informational message about any import or use that is made
    redundant by an earlier, more general import or use.

    Fix two bugs in the code that generated warnings for just plain unused
    modules.

    (1) It did not consider that a use of the builtin type char justified
    an import of char.m, but without that import, the type is not visible.

    (2) It scanned cons_ids in goals in procedure bodies, but did not scan
    cons_ids that have been put into the const_struct_db. (I did not update
    the code here when I added the const_struct_db.)

    Also, add a (hopefully temporary) workaround for a bug in
    make_hlds_passes.m, which is noted below.

    However, there are at least three problems that prevent us from enabling
    --warn-unused-imports by default.

    (1) In some places, the import of a module is used only by clauses for
    a predicate that also has foreign procs. When compiled in a grade that
    selects one of those foreign_procs as the implementation of the predicate,
    the clauses are discarded *without* being added to the HLDS at all.
    This leads unused_imports.m to generate an uncalled-for warning in such
    cases. To fix this, we would need to preserve the Mercury clauses for
    *all* predicates, even those with foreign procs, and do all the semantic
    checks on them before throwing them away. (I tried to do this once, and
    failed, but the task should be easier after the item list change.)

    (2) We have two pieces of code to generate import warnings. The one in
    unused_imports.m operates on the HLDS after type and mode checking,
    while module_qual.m operates on the parse tree before the creation of
    the HLDS. The former is more powerful, since it knows e.g. what types and
    modes are used in the bodies of predicates, and hence can generate warnings
    about an import being unused *anywhere* in a module, as opposed to just
    unused in its interface.

    If --warn-unused-imports is enabled, we will get two separate set of
    reports about an interface import being unused in the interface,
    *unless* we get a type or mode error, in which case unused_imports.m
    won't be invoked. But in case we do get such errors, we don't want to
    throw away the warnings from module_qual.m. We could store them and
    throw them away only after we know we won't need them, or just get
    the two modules to generate identical error_specs for each warning,
    so that the sort_and_remove_dups of the error specs will do the
    throwing away for us for free, if we get that far.

    (3) The valid/bug100.m test case was added as a regression test for a bug
    that was fixed in module_qual.m. However the bug is still present in
    unused_imports.m.

compiler/make_hlds_passes.m:
    Give hlds_module.m the extra information it now needs for each item_avail.

    Add an XXX for a bug that cannot be fixed right now: the setting of
    the status of abstract instances to abstract_imported. (The "abstract"
    part is correct; the "imported" part may not be.)

compiler/intermod.m:
compiler/try_expand.m:
compiler/xml_documentation.m:
    Conform to the change in hlds_module.m.

compiler/module_qual.m:
    Update the documentation of the relationship of this module
    with unused_imports.m.

compiler/hlds_data.m:
    Document a problem with the status of instance definitions.

compiler/hlds_out_module.m:
    Update the code that prints out the module_info to conform to the change
    to hlds_module.m.

    Print status information about instances, which was needed to diagnose
    one of the bugs in unused_imports.m. Format the output for instances
    nicer.

compiler/prog_item.m:
    Add a convenience predicate.

compiler/prog_data.m:
    Remove a type synonym that makes things harder to understand, not easier.

compiler/modules.m:
    Delete an XXX that asks for the feature this diff implements.
    Add another XXX about how that feature could be improved.

compiler/Mercury.options.m:
    Add some more modules to the list of modules on which the compiler
    should be invoked with --no-warn-unused-imports.

compiler/*.m:
library/*.m:
mdbcomp/*.m:
browser/*.m:
deep_profiler/*.m:
mfilterjavac/*.m:
    Delete unneeded imports. Many of these shadow other imports, and some
    are just plain unneeded, as shown by --warn-unused-imports. In a few
    modules, there were a *lot* of unneeded imports, but most had just
    one or two.

    In a few cases, removing an import from a module, because it *itself*
    does not need it, required adding that same import to those of its
    submodules which *do* need it.

    In a few cases, conform to other changes above.

tests/invalid/Mercury.options:
    Test the generation of messages about import shadowing on the existing
    import_in_parent.m test case (although it was also tested very thoroughly
    when giving me the information needed for the deletion of all the
    unneeded imports above).

tests/*/*.{m,*exp}:
    Delete unneeded imports, and update any expected error messages
    to expect the now-smaller line numbers.
2015-08-25 00:38:49 +10:00
Zoltan Somogyi
04dec8c205 Carve vartypes.m, prog_detism.m and prog_rename.m out of prog_data.m.
Besides defining most of the types representing the smaller parts of
parse trees (parts smaller than items), prog_data.m also has many utility
predicates that operate on values of these types. Carve the three substantial
clusters of predicates out of prog_data.m, and move them into their own
modules, which are each imported by fewer modules than prog_data.m itself.

compiler/vartypes.m:
    New module containing the vartypes type and the predicates that operate
    on it. The new module has *much* better cohesion than the old prog_data.m.

    The vartypes type does not appear in any parse tree; it is used only
    in the HLDS. So make vartypes.m part of the hlds.m package, not
    parse_tree.m.

    Move three predicates that perform renamings and substitutions on vartypes
    here from prog_type_subst.m, since the latter is part of the parse_tree.m
    package, and thus doesn't have access to hlds.vartypes. Make private
    the service predicate that these three moved predicates used to rely on,
    since it has no other callers.

compiler/prog_detism.m:
    New module containing utility predicates that operate on determinisms
    and determinism components.

compiler/prog_rename.m:
    New module containing utility predicates that rename variables in
    various data structures.

compiler/prog_data.m:
    Remove the stuff now in the three new modules.

compiler/prog_type_subst.m:
    Remove the three predicates now in vartypes.m.

compiler/mercury_to_mercury.m:
    Delete an unneded predicate, which was the only part of this module
    that referred to vartypes.

compiler/prog_type.m:
compiler/builtin_lib_types.m:
compiler/type_util.m:
    Move some utility predicates that refer to vartypes from prog_type.m
    and builtin_lib_types.m (both part of parse_tree.m) to type_util.m
    (part of check_hlds.m).

compiler/parse_tree.m:
compiler/hlds.m:
compiler/notes/compiler_design.html:
    Mention the new modules.

compiler/accumulator.m:
compiler/add_class.m:
compiler/add_clause.m:
compiler/add_foreign_proc.m:
compiler/add_heap_ops.m:
compiler/add_pragma_type_spec.m:
compiler/add_pred.m:
compiler/add_trail_ops.m:
compiler/arg_info.m:
compiler/bytecode_gen.m:
compiler/call_gen.m:
compiler/clause_to_proc.m:
compiler/closure_analysis.m:
compiler/code_info.m:
compiler/code_loc_dep.m:
compiler/common.m:
compiler/complexity.m:
compiler/const_prop.m:
compiler/constraint.m:
compiler/continuation_info.m:
compiler/coverage_profiling.m:
compiler/cse_detection.m:
compiler/ctgc.datastruct.m:
compiler/ctgc.util.m:
compiler/deep_profiling.m:
compiler/deforest.m:
compiler/delay_construct.m:
compiler/delay_partial_inst.m:
compiler/dep_par_conj.m:
compiler/det_analysis.m:
compiler/det_report.m:
compiler/det_util.m:
compiler/disj_gen.m:
compiler/equiv_type_hlds.m:
compiler/erl_call_gen.m:
compiler/erl_code_gen.m:
compiler/erl_code_util.m:
compiler/exception_analysis.m:
compiler/float_regs.m:
compiler/follow_code.m:
compiler/follow_vars.m:
compiler/format_call.m:
compiler/goal_expr_to_goal.m:
compiler/goal_path.m:
compiler/goal_store.m:
compiler/goal_util.m:
compiler/headvar_names.m:
compiler/hhf.m:
compiler/higher_order.m:
compiler/hlds_clauses.m:
compiler/hlds_goal.m:
compiler/hlds_llds.m:
compiler/hlds_out_goal.m:
compiler/hlds_out_module.m:
compiler/hlds_out_pred.m:
compiler/hlds_pred.m:
compiler/hlds_rtti.m:
compiler/inlining.m:
compiler/inst_util.m:
compiler/instmap.m:
compiler/intermod.m:
compiler/interval.m:
compiler/lambda.m:
compiler/lco.m:
compiler/live_vars.m:
compiler/liveness.m:
compiler/lookup_switch.m:
compiler/make_goal.m:
compiler/mark_tail_calls.m:
compiler/ml_accurate_gc.m:
compiler/ml_code_gen.m:
compiler/ml_code_util.m:
compiler/ml_disj_gen.m:
compiler/ml_gen_info.m:
compiler/ml_lookup_switch.m:
compiler/ml_proc_gen.m:
compiler/ml_unify_gen.m:
compiler/mode_constraints.m:
compiler/mode_info.m:
compiler/mode_util.m:
compiler/modecheck_call.m:
compiler/modecheck_conj.m:
compiler/modecheck_goal.m:
compiler/modecheck_unify.m:
compiler/modecheck_util.m:
compiler/modes.m:
compiler/par_loop_control.m:
compiler/pd_info.m:
compiler/pd_util.m:
compiler/polymorphism.m:
compiler/post_typecheck.m:
compiler/prog_rep.m:
compiler/prop_mode_constraints.m:
compiler/purity.m:
compiler/qual_info.m:
compiler/quantification.m:
compiler/rbmm.points_to_graph.m:
compiler/rbmm.points_to_info.m:
compiler/rbmm.region_liveness_info.m:
compiler/rbmm.region_transformation.m:
compiler/saved_vars.m:
compiler/set_of_var.m:
compiler/simplify_goal_call.m:
compiler/simplify_goal_conj.m:
compiler/simplify_goal_disj.m:
compiler/simplify_goal_ite.m:
compiler/simplify_goal_scope.m:
compiler/simplify_goal_switch.m:
compiler/simplify_goal_unify.m:
compiler/simplify_info.m:
compiler/simplify_proc.m:
compiler/size_prof.m:
compiler/ssdebug.m:
compiler/stack_alloc.m:
compiler/stack_layout.m:
compiler/stack_opt.m:
compiler/stm_expand.m:
compiler/store_alloc.m:
compiler/structure_reuse.analysis.m:
compiler/structure_reuse.direct.choose_reuse.m:
compiler/structure_reuse.direct.detect_garbage.m:
compiler/structure_reuse.indirect.m:
compiler/structure_reuse.lbu.m:
compiler/structure_reuse.lfu.m:
compiler/structure_sharing.analysis.m:
compiler/structure_sharing.domain.m:
compiler/switch_detection.m:
compiler/table_gen.m:
compiler/tabling_analysis.m:
compiler/term_constr_build.m:
compiler/term_constr_initial.m:
compiler/term_constr_util.m:
compiler/term_pass1.m:
compiler/term_traversal.m:
compiler/term_util.m:
compiler/trace_gen.m:
compiler/trailing_analysis.m:
compiler/try_expand.m:
compiler/tupling.m:
compiler/type_assign.m:
compiler/type_constraints.m:
compiler/typecheck.m:
compiler/typecheck_errors.m:
compiler/unify_gen.m:
compiler/unify_proc.m:
compiler/unique_modes.m:
compiler/unneeded_code.m:
compiler/untupling.m:
compiler/unused_args.m:
compiler/var_locn.m:
    Conform to the above changes, mostly by importing some of the
    three new modules as well as, or instead of, prog_data.m.
2015-08-09 19:02:12 +10:00
Peter Wang
14cc6c83e8 Allow external files to be included in foreign_decl and foreign_code.
Allow external files to be included in pragma foreign_decl and pragma
foreign_code declarations:

    :- pragma foreign_decl("Lang", include_file("Path")).
    :- pragma foreign_decl("Lang", local, include_file("Path")).
    :- pragma foreign_code("Lang", include_file("Path")).

where Path may be an absolute path to a file or a path relative to the
directory that contains the source file of the module containing the
declaration.

mmc --make takes include_file into account when computing dependencies.
Mmake is unchanged yet.

compiler/prog_data.m:
	Add types foreign_literal_or_include and foreign_include_file_info.

	Rename "foreign_code" where "foreign_proc" is meant.

compiler/prog_foreign.m:
	Use foreign_literal_or_include where we now want to allow include_file
	directives.

compiler/prog_io_pragma.m:
	Parse include_file forms of pragma foreign_decl and pragma
	foreign_code declarations.

	Rename "foreign_code" where "foreign_proc" is meant.

compiler/prog_io_typeclass.m:
	Use foreign_literal_or_include where we want to allow include_file.

	Make get_item_list_foreign_code return a list of foreign include
	files.

	Rename "foreign_code" where "foreign_proc" is meant.

compiler/file_names.m:
	Add a predicate to get a module's source file name.

	Add make_include_file_path.

	Reorder a predicate within the module.

compiler/file_util.m:
	Add write_include_file_contents, a common predicate for copying
	the contents of an included file into the output.

	Make output_to_file catch and report exceptions from
	write_include_file_contents, and return a success code.

compiler/export.m:
compiler/llds_out_file.m:
compiler/llds_out_util.m:
compiler/mercury_compile_llds_back_end.m:
	Handle include_file directives when generating target code.

	Make output_llds use output_to_file, and propagate its success code.

	Conform to changes.

compiler/mercury_compile_mlds_back_end.m:
compiler/mlds_to_c.m:
compiler/mlds_to_cs.m:
compiler/mlds_to_ilasm.m:
compiler/mlds_to_java.m:
compiler/mlds_to_managed.m:
	Handle include_file directives when generating target code.

	Propagate success codes from output_to_file.

compiler/elds_to_erlang.m:
compiler/mercury_compile_erl_back_end.m:
	Handle include_file directives when generating target code.

	Propagate success code from output_to_file.

	Fix a tiny bug: the "do not edit" comment names the .erl file
	as the source file.

compiler/mercury_compile.m:
	Take account of the success codes now returned by target code
	generators, stopping on failure.

compiler/mercury_to_mercury.m:
	Print out include_file directives.

compiler/module_imports.m:
	Record in module_imports the list of included files.

compiler/make.dependencies.m:
	Add files referenced by include_file directives as dependencies of
	the module's compiled-code target.

compiler/make.module_dep_file.m:
	Introduce .module_dep file format version 2, which has an additional
	field: the list of included files that the module depends on.

	Refactor the .module_dep file parsing code.

compiler/add_pragma.m:
compiler/add_solver.m:
compiler/coverage_profiling.m:
compiler/det_analysis.m:
compiler/erl_call_gen.m:
compiler/erl_code_gen.m:
compiler/foreign.m:
compiler/goal_util.m:
compiler/hlds_goal.m:
compiler/hlds_module.m:
compiler/hlds_out_goal.m:
compiler/intermod.m:
compiler/make_hlds_passes.m:
compiler/make_hlds_warn.m:
compiler/ml_code_gen.m:
compiler/modecheck_goal.m:
compiler/modules.m:
compiler/polymorphism.m:
compiler/pragma_c_gen.m:
compiler/prog_item.m:
compiler/typecheck.m:
compiler/unique_modes.m:
compiler/write_deps_file.m:
	Conform to changes.

	Rename "foreign_code" where "foreign_proc" is meant.

doc/reference_manual.texi:
	Document include_file as a lanaguage extension.

tests/invalid/Mmakefile:
tests/invalid/foreign_include_file_missing.err_exp:
tests/invalid/foreign_include_file_missing.m:
tests/mmc_make/Mmakefile:
tests/mmc_make/inc/code.c:
tests/mmc_make/inc/code.cs:
tests/mmc_make/inc/code.erl:
tests/mmc_make/inc/code.java:
tests/mmc_make/inc/decl.cs:
tests/mmc_make/inc/decl.erl:
tests/mmc_make/inc/decl.h:
tests/mmc_make/inc/decl.java:
tests/mmc_make/include_file.exp:
tests/mmc_make/include_file.m:
	Add test cases.

NEWS:
	Announce the change.
2014-03-31 11:27:57 +11:00
Peter Wang
719f987a07 Fix inverted test in deep-profiler assertion.
Branches: main

compiler/coverage_profiling.m:
	Fix inverted test in deep-profiler assertion.
2012-07-27 07:44:29 +00:00
Paul Bone
a4048455bc Minor coverage profiling improvement.
While writing the background section of my thesis I found a case where
coverage profiling can be trivially and obviously improved.  These
changes make this small improvement.  Even though the improvement is
minor, it seems obvious so I'd rather make it so that I don't have to
avoid describing it in the thesis.

In if-then-else expressions with a condition that has at most one
solution the coverage at the beginning of the else branch can be inferred
from the coverage before the ITE and before the then branch.  We can
avoid creating a coverage point at the beginning of the else branch.

I haven't updated the deep profiling version number since a newer
inference tool will happily read older profiles (which means I don't
have to adjust the feedback tests).  However an older tool may not
auto-parallelise a newer profile.

deep_profiler/coverage.m:
    As above.

compiler/coverage_profiling.m:
    Conform with the updates in deep_profiler/coverage.m

    Fix trailing whitespace.
2012-05-16 06:27:09 +00:00
Peter Wang
b86f973fa9 Allow the use of Mercury abstract machine float registers for passing
Branches: main

Allow the use of Mercury abstract machine float registers for passing
double-precision float arguments in higher order calls.

In of itself this is not so useful for typical Mercury code.  However, as
all non-local procedures are potentially the targets of higher order calls,
without this change first order calls to non-local procedures could not use
float registers either.  That is the actual motivation for this change.

The basic mechanism is straightforward.  As before, do_call_closure_* is
invoked to place the closure's hidden arguments into r1, ..., rN, and extra
input arguments shifted into rN+1, etc.  With float registers, extra input
arguments may also be in f1, f2, etc. and the closure may also have hidden
float arguments.  Optimising for calls, we order the closure's hidden
arguments so that all float register arguments come after all regular
register arguments in the vector.  Having the arguments out of order does
complicate code which needs to deconstruct closures, but that is not so
important.

Polymorphism complicates things.  A closure with type pred(float) may be
passed to a procedure expecting pred(T).  Due to the `float' argument type,
the closure expects its argument in a float register.  But when passed to the
procedure, the polymorphic argument type means it would be called with the
argument in a regular register.

Higher-order insts already contain information about the calling convention,
without which a higher-order term cannot be called.  We extend higher-order
insts to include information about the register class required for each
argument.  For example, we can distinguish between:

	pred(in) is semidet /* arg regs: [reg_f] */
and
	pred(in) is semidet /* arg regs: [reg_r] */

Using this information, we can create a wrapper around a higher-order
variable if it appears in a context requiring a different calling convention.
We do this in a new HLDS pass, called float_regs.m.

Note: Mercury code has a tendency to lose insts for higher-order terms, then
"recover" them by hacky means.  The float_regs pass depends on higher-order
insts; it is impossible to create a wrapper for a procedure without knowing
how to call it.  The float_regs pass will report errors which we otherwise
accepted, due to higher-order insts being unavailable.  It should be possible
for the user to adjust the code to satisfy the pass, though the user may not
understand why it should be necessary.  In most cases, it probably really
*is* unnecessary.  We may be able to make the float_regs pass more tolerant
of missing higher-order insts in the future.

Class method calls do not use float registers because I didn't want to deal
with them yet.


compiler/options.m:
compiler/handle_options.m:
	Always enable float registers in low-level C grades when floats are
	wider than a word.

compiler/make_hlds_passes.m:
	Always allow double word floats to be stored unboxed in cells on C
	grades.

compiler/hlds_goal.m:
	Add an extra field to `generic_call' which gives the register class
	to use for each argument.  This is set by the float_regs pass.

compiler/prog_data.m:
	Add an extra field to `pred_inst_info' which records the register class
	to use for each argument.  This is set by the float_regs pass.

compiler/hlds_pred.m:
	Add a field to `proc_sub_info' which lists the headvars which must be
	passed via regular registers despite their types.

	Add a field to `pred_sub_info' to record the original unsubstituted
	argument types for instance method predicates.

compiler/check_typeclass.m:
	In the pred_info of an instance method predicate, record the original
	argument types before substituting the type variables for the instance.

compiler/float_regs.m:
compiler/transform_hlds.m:
	Add the new HLDS pass.

compiler/mercury_compile_middle_passes.m:
	Run the new pass if float registers are enabled.

compiler/lambda.m:
	Export the predicate to produce a predicate from a lambda.
	This is reused by float_regs.m to create wrapper closures.

	Add an argument to `expand_lambda' to set the reg_r_headvars field on
	the newly created procedure.

	Delete some unused fields from `lambda_info'.

compiler/arg_info.m:
	Make `generate_proc_arg_info' no longer always use regular registers
	for calls to exported procedures.  Do always use regular registers for
	class methods calls.

	Add a version of `make_arg_infos' which takes an explicit list of
	argument registers.  Rename the previous version.

	Add `generic_call_arg_reg_types' to return the argument registers
	for a generic call.

	Add a version of `compute_in_and_out_vars' which additionally separates
	arguments for float and regular registers.

compiler/call_gen.m:
	Use float registers for argument passing in higher-order calls, as
	directed by the new field in `generic_call'.

compiler/code_util.m:
	Add a function to encode the number of regular and float register
	arguments when making a higher-order call.

compiler/llds.m:
	Say that the `do_call_closure_N' functions only work for zero float
	register arguments.

compiler/follow_vars.m:
compiler/interval.m:
	Account for the use of float registers by generic call goals in these
	passes.

compiler/unify_gen.m:
	Move float register arguments to the end of a closure's hidden
	arguments vector, after regular register arguments.

	Count hidden regular and float register arguments separately, but
	encode them in the same word in the closure.  This is preferable to
	using two words because it reduces the differences between grades
	with and without float registers present.

	Disable generating code which creates a closure from an existing
	closure, if float registers exist.  That code does not understand the
	reordered hidden arguments vector yet.

compiler/continuation_info.m:
	Replace an argument's type_info in the closure layout if the argument
	is a float *and* is passed via a regular register, when floats are
	normally passed via float registers.  Instead, give it the type_info
	for `private_builtin.float_box'.

compiler/builtin_lib_types.m:
	Add function to return the type of `private_builtin.float_box/0'.

compiler/hlds_out_goal.m:
compiler/hlds_out_pred.m:
compiler/mercury_to_mercury.m:
	Dump the new fields added to `generic_call', `pred_inst_info' and
	`proc_sub_info'.

compiler/prog_type.m:
	Add helper predicate.

compiler/*.m:
	Conform to changes.

library/private_builtin.m:
	Add a type `float_box'.

runtime/mercury_ho_call.h:
	Describe the modified closure representation.

	Rename the field which counts the number of hidden arguments to prevent
	it being used incorrectly, as it now encodes two numbers (potentially).

	Add macros to unpack the encoded field.

runtime/mercury_ho_call.c:
	Update the description of how higher-order calls work.

	Update code which extracts closure arguments to take account the
	arguments being reordered in the hidden arguments vector.

runtime/mercury_deep_copy.c:
runtime/mercury_deep_copy_body.h:
runtime/mercury_layout_util.c:
runtime/mercury_ml_expand_body.h:
	Update code which extracts closure arguments to take account the
	arguments being reordered in the hidden arguments vector.

runtime/mercury_type_info.c:
runtime/mercury_type_info.h:
	Add helper function.

tools/make_spec_ho_call:
	Update the generated do_call_closure_* functions to place float
	register arguments.

tests/hard_coded/Mercury.options:
tests/hard_coded/Mmakefile:
tests/hard_coded/ho_float_reg.exp:
tests/hard_coded/ho_float_reg.m:
	Add new test case.

tests/hard_coded/copy_pred.exp:
tests/hard_coded/copy_pred.m:
tests/hard_coded/deconstruct_arg.exp:
tests/hard_coded/deconstruct_arg.exp2:
tests/hard_coded/deconstruct_arg.m:
	Extend test cases with float arguments in closures.

tests/debugger/higher_order.exp2:
	Add alternative output, changed due to closure wrapping.

tests/hard_coded/ho_univ_to_type.m:
	Adjust test case so that the float_regs pass does not report errors
	about missing higher-order insts.

compiler/notes/compiler_design.html:
	Describe the new module.

	Delete a duplicated paragraph.

compiler/notes/todo.html:
TODO:
	Delete one hundred billion year old todos.
2012-02-13 00:11:57 +00:00
Zoltan Somogyi
d00ea69529 Switch from using set(prog_var), which is represented using set_ordlist,
Estimated hours taken: 12
Branches: main

Switch from using set(prog_var), which is represented using set_ordlist,
to set_of_progvar, which is represented using tree_bitset, for most sets
of variables in the compiler, including the nonlocals sets in goal_infos.

This diff yields about a 5% speedup when compiling the training_cars_full.m
stress test, but also about a 1% slowdown on tools/speedtest. Both of these
are with the current default state in which tree_bitset is compiled with
a whole bunch of sanity checks. If these are disabled, we get roughly a 1%
speedup on tools/speedtest. I intend to disable those sanity checks after
a shakedown period of a week or two in which the updated version of the
compiler is installed on our platforms.

compiler/hlds_goal.m:
	Replace almost all occurrences of set(prog_var) with set_of_progvar.
	The main exceptions are the types supporting rbmm.

compiler/set_of_var.m:
	Add some more predicates and functions that previous existed on sets
	but not yet on set_of_vars.

compiler/*.m:
	Conform to the change in hlds_goal.m, and make similar changes
	in set representations.

library/bag.m:
	Add a predicate and function for creating a bag from a sorted list.
	We already had them for creating a bag from a set, but a set_of_progvar
	shouldn't have to be converted to a set.

library/robdd.m:
	Fix deviations from our programming style.
2011-08-16 03:26:40 +00:00
Zoltan Somogyi
295415090e Convert almost all remaining modules in the compiler to use
Estimated hours taken: 6
Branches: main

compiler/*.m:
	Convert almost all remaining modules in the compiler to use
	"$module, $pred" instead of "this_file" in error messages.

	In a few cases, the old error message was misleading, since it
	contained an incorrect, out-of-date or cut-and-pasted predicate name.

tests/invalid/unresolved_overloading.err_exp:
	Update an expected output containing an updated error message.
2011-05-23 05:08:24 +00:00
Julien Fischer
9f68c330f0 Change the argument order of many of the predicates in the map, bimap, and
Branches: main

Change the argument order of many of the predicates in the map, bimap, and
multi_map modules so they are more conducive to the use of state variable
notation, i.e. make the order the same as in the sv* modules.

Prepare for the deprecation of the sv{bimap,map,multi_map} modules by
removing their use throughout the system.

library/bimap.m:
library/map.m:
library/multi_map.m:
	As above.
NEWS:
	Announce the change.

	Separate out the "highlights" from the "detailed listing" for
	the post-11.01 NEWS.

	Reorganise the announcement of the Unicode support.

benchmarks/*/*.m:
browser/*.m:
compiler/*.m:
deep_profiler/*.m:
extras/*/*.m:
mdbcomp/*.m:
profiler/*.m:
tests/*/*.m:
ssdb/*.m:
samples/*/*.m
slice/*.m:
	Conform to the above change.

	Remove any dependencies on the sv{bimap,map,multi_map} modules.
2011-05-03 04:35:04 +00:00
Paul Bone
d43239d6a7 Move some of the goal path code from compiler/goal_path.m to the mdbcomp
library where it can be used by the deep profiler.

Also move the goal path code from program_representation.m to the new module,
goal_path.m in mdbcomp/

mdbcomp/goal_path.m:
    New module containing goal path code.

mdbcomp/program_representation.m:
    Original location of goal path code.

compiler/goal_path.m:
    Move some of this goal_path code into mdbcomp/goal_path.m

mdbcomp/feedback.automatic_parallelisation.m:
mdbcomp/rtti_access.m:
mdbcomp/slice_and_dice.m:
mdbcomp/trace_counts.m:
browser/debugger_interface.m:
browser/declarative_execution.m:
browser/declarative_tree.m:
compiler/build_mode_constraints.m:
compiler/call_gen.m:
compiler/code_info.m:
compiler/continuation_info.m:
compiler/coverage_profiling.m:
compiler/deep_profiling.m:
compiler/format_call.m:
compiler/goal_path.m:
compiler/goal_util.m:
compiler/hlds_data.m:
compiler/hlds_goal.m:
compiler/hlds_out_goal.m:
compiler/hlds_out_pred.m:
compiler/hlds_pred.m:
compiler/interval.m:
compiler/introduce_parallelism.m:
compiler/layout_out.m:
compiler/llds.m:
compiler/mode_constraint_robdd.m:
compiler/mode_constraints.m:
compiler/mode_ordering.m:
compiler/ordering_mode_constraints.m:
compiler/polymorphism.m:
compiler/post_typecheck.m:
compiler/prog_rep.m:
compiler/prop_mode_constraints.m:
compiler/push_goals_together.m:
compiler/rbmm.condition_renaming.m:
compiler/smm_common.m:
compiler/stack_layout.m:
compiler/stack_opt.m:
compiler/trace_gen.m:
compiler/tupling.m:
compiler/type_constraints.m:
compiler/typecheck.m:
compiler/unify_gen.m:
compiler/unneeded_code.m:
deep_profiler/Mmakefile:
deep_profiler/analysis_utils.m:
deep_profiler/coverage.m:
deep_profiler/create_report.m:
deep_profiler/display_report.m:
deep_profiler/dump.m:
deep_profiler/mdprof_fb.automatic_parallelism.m:
deep_profiler/message.m:
deep_profiler/old_query.m:
deep_profiler/profile.m:
deep_profiler/program_representation_utils.m:
deep_profiler/read_profile.m:
deep_profiler/recursion_patterns.m:
deep_profiler/report.m:
deep_profiler/var_use_analysis.m:
slice/Mmakefile:
slice/mcov.m:
    Conform to the move of the goal path code.
2011-01-13 00:36:56 +00:00
Zoltan Somogyi
a2cd0da5b3 The existing representation of goal_paths is suboptimal for several reasons.
Estimated hours taken: 80
Branches: main

The existing representation of goal_paths is suboptimal for several reasons.

- Sometimes we need forward goal paths (e.g. to look up goals), and sometimes
  we need reverse goal paths (e.g. when computing goal paths in the first
  place). We had two types for them, but

  - their names, goal_path and goal_path_consable, were not expressive, and
  - we could store only one of them in goal_infos.

- Testing whether goal A is a subgoal of goal B is quite error-prone using
  either form of goal paths.

- Using a goal path as a key in a map, which several compiler passes want to
  do, requires lots of expensive comparisons.

This diff replaces most uses of goal paths with goal ids. A goal id is an
integer, so it can be used as a key in faster maps, or even in arrays.
Every goal in the body of a procedure gets its id allocated in a depth first
search. Since we process each goal before we dive into is descendants,
the goal representing the whole body of a procedure always gets goal id 0.
The depth first traversal also builds up a map (the containing goal map)
that tells us the parent goal of ever subgoal, with the obvious exception
of the root goal itself. From the containing goal map, one can compute
both reverse and forward goal paths. It can also serve as the basis of an
efficient test of whether the goal identified by goal id A is an ancestor
of another goal identified by goal id B. We don't yet use this test,
but I expect we will in the future.

mdbcomp/program_representation.m:
	Add the goal_id type.

	Replace the existing goal_path and goal_path_consable types
	with two new types, forward_goal_path and reverse_goal_path.
	Since these now have wrappers around the list of goal path steps
	that identify each kind of goal path, it is now ok to expose their
	representations. This makes several compiler passes easier to code.

	Update the set of operations on goal paths to work on the new data
	structures.

	Add a couple of step types to represent lambdas and try goals.
	Their omission prior to this would have been a bug for constraint-based
	mode analysis, or any other compiler pass prior to the expansion out
	of lambda and try goals that wanted to use goal paths to identify
	subgoals.

browser/declarative_tree.m:
mdbcomp/rtti_access.m:
mdbcomp/slice_and_dice.m:
mdbcomp/trace_counts.m:
slice/mcov.m:
deep_profiler/*.m:
	Conform to the changes in goal path representation.

compiler/hlds_goal:
	Replace the goal_path field with a goal_id field in the goal_info,
	indicating that from now on, this should be used to identify goals.

	Keep a reverse_goal_path field in the goal_info for use by RBMM and
	CTGC. Those analyses were too hard to convert to using goal_ids,
	especially since RBMM uses goal_paths to identify goals in multi-pass
	algorithms that should be one-pass and should not NEED to identify
	any goals for later processing.

compiler/goal_path:
	Add predicates to fill in goal_ids, and update the predicates
	filling in the now deprecated reverse goal path fields.

	Add the operations needed by the rest of the compiler
	on goal ids and containing goal maps.

	Remove the option to set goal paths using "mode equivalent steps".
	Constraint based mode analysis now uses goal ids, and can now
	do its own equivalent optimization quite simply.

	Move the goal_path module from the check_hlds package to the hlds
	package.

compiler/*.m:
	Conform to the changes in goal path representation.

	Most modules now use goal_ids to identify goals, and use a containing
	goal map to convert the goal ids to goal paths when needed.
	However, the ctgc and rbmm modules still use (reverse) goal paths.

library/digraph.m:
library/group.m:
library/injection.m:
library/pprint.m:
library/pretty_printer.m:
library/term_to_xml.m:
	Minor style improvements.
2010-12-20 07:47:49 +00:00
Zoltan Somogyi
8a28e40c9b Add the predicates sorry, unexpected and expect to library/error.m.
Estimated hours taken: 2
Branches: main

Add the predicates sorry, unexpected and expect to library/error.m.

compiler/compiler_util.m:
library/error.m:
	Move the predicates sorry, unexpected and expect from compiler_util
	to error.

	Put the predicates in error.m into the same order as their
	declarations.

compiler/*.m:
	Change imports as needed.

compiler/lp.m:
compiler/lp_rational.m:
	Change imports as needed, and some minor cleanups.

deep_profiler/*.m:
	Switch to using the new library predicates, instead of calling error
	directly. Some other minor cleanups.

NEWS:
	Mention the new predicates in the standard library.
2010-12-15 06:30:36 +00:00
Paul Bone
7e7d77e23f Make coverage profiling data 'deep'.
The deep profiler associates measurements with their context in the call graph
modulo recursion.  This has been true for all measurements except for coverage
profiling data.  This patch allows coverage data to be associated with
ProcDynamic structures so that it is keyed by this context not just the static
procedure.  This new behaviour is the default the old option of static coverage
profiling is still available for testing, as is no coverage profiling.  Note
that, as before, coverage profiling is supported by default however coverage
points are not inserted by default.

This change will be used to measure the depth of recursion, and therefore the
average cost of recursion as well as the likely times when variables are
produced in calls for the automatic parallelisation analysis.

runtime/mercury_conf_param.h:
    Create three new preprocessor macros:
        MR_DEEP_PROFILING_COVERAGE - defined when coverage profiling is
            enabled.
        MR_DEEP_PROFILING_COVERAGE_STATIC - defined when static coverage
            profiling is being used.
        MR_DEEP_PROFILING_COVERAGE_DYNAMIC - defined when dynamic coverage
            profiling is being used.

runtime/mercury_deep_profiling.h:
    Update data structures to support dynamic coverage profiling.

    Use conditional compilation to allow us to test the deep profiler in three
    different modes, without coverage profiling, with static coverage profiling
    and with dynamic coverage profiling.

    Rename MR_PROFILING_MALLOC, since it takes a type rather than a size in
    bytes it should be called MR_PROFILING_NEW to conform with existing malloc
    and new functions.

runtime/mercury_deep_profiling.c:
    Avoid a C compiler warning.

    MR_write_out_coverage_point has been removed, it's replaced with:
        MR_write_out_coverage_points_static and
        MR_write_out_coverage_points_dynamic.
    These write out more than one coverage point and write out either static or
    dynamic coverage points.

    Write a 64bit flags value (a bitfield) to the header of the Deep.data file.
    This replaces the canonical byte (with a bit).  and the byte that describes
    the word size.  This value also includes two bits describing the whether no
    coverage data, static coverage data or dynamic coverage data is present in
    the file.  A bit is reserved ti indicate if the data is compressed (which
    is not yet supported).

    MR_write_fixed_size_int now writes out 8 byte integers, this is only used
    for some counts present at the beginning of the data file along with the
    new flags value.  It now takes a MR_uint_least64_t integer as it's
    parameter.  The assertion to test for negative numbers has been removed
    since this type is unsigned.

    Increment the Deep.data file format version number.

compiler/layout_out.m:
    Conditionally compile the NULL pointer that represents the coverage points
    list in proc statics.  This is conditional on the
    MR_DEEP_PROFILING_COVERAGE_STATIC macro being defined.

compiler/coverage_profiling.m:
    Add support for generating dynamic coverage points.

compiler/options.m:
compiler/handle_options.m:
    Implement the new developer options for controlling coverage profiling.

library/profiling_builtin.m:
    Specialize increment_coverage_point_count for both static and dynamic
    coverage profiling.  This creates
    increment_{static,dynamic}_coverage_point_count.

deep_profiler/profile.m:
    Add an extra field to profile_stats, this tracks whether the file reader
    should try to read none, static or dynamic coverage data.

    Add an extra field to proc_dynamic, An array of coverage counts wrapped by
    a maybe type.  It's indexed the same as the array of coverage infos in
    proc_static.  This array is present if dynamic coverage profiling is being
    done (the default).

    Modify the coverage_points field in proc static, now there are two fields,
    an array of coverage_point_info values which store compile-time data.  And
    an optional array of coverage points (present if static coverage profiling
    was performed).

    Updated the formatting of the proc static structure.

    Moved the coverage_point type to coverage.m.

    Created a new type, coverage_data_type which enumerates the possibilities
    for coverage profiling: none, static and dynamic.

deep_profiler/coverage.m:
    Move the coverage point type here from profile.m, as the profile data
    structure no longer refers to it directly.

    Create a predicate coverage_point_arrays_to_list/3 which merges coverage
    point information and the counts themselves into coverage points.  This can
    be used to construct a list of coverage points regardless of whether static
    or dynamic coverage points are being used.

deep_profiler/read_profile.m:
    Conform to changes in runtime/mercury_deep_profiling.c.

    Refactored reading of the file header, a new named predicate is now used
    rather than a lambda expression.

    Incremented the Deep.data version number.

deep_profiler/report.m:
    Updated the proc dynamic dump report structure to include a list of
    coverage points.

deep_profiler/create_report.m:
deep_profiler/display_report.m:
    Conform to changes in profile.m.

    The proc dynamic dump now shows coverage information that was contained in
    that proc dynamic.

deep_profiler/canonical.m:
deep_profiler/dump.m:
    Conform to changes in profile.m.

deep_profiler/io_combinator.m:
    Add a 13-arg version of maybe_error_sequence.

deep_profiler/Mercury.options:
    Documented another trace flag.
2010-09-21 01:09:17 +00:00
Zoltan Somogyi
30aafc69a0 Split up three big compiler modules: llds_out.m, hlds_out.m (5000+ lines each)
Estimated hours taken: 12
Branches: main

Split up three big compiler modules: llds_out.m, hlds_out.m (5000+ lines each)
and deep_profiling.m (3000+ lines). Put the predicates in the resulting
smaller modules into cohesive groups where possible. A few of the predicates
in the original modules were unused; this diff deletes them.

There are no algorithmic changes.

compiler/llds_out_code_addr.m:
	New module containing the part of llds_out.m that outputs
	code addresses and labels.

compiler/llds_out_data.m:
	New module containing the part of llds_out.m that outputs
	lvals, rvals and their components.

compiler/llds_out_global.m:
	New module containing the part of llds_out.m that generates
	global static C data structures.

compiler/llds_out_instr.m:
	New module containing the part of llds_out.m that outputs
	instructions

compiler/llds_out_file.m:
	New module containing the top level part of llds_out.m,
	which coordinates the generation of a whole C source file.

compiler/llds_out_util.m:
	New module containing the utility parts of llds_out.m.

compiler/llds_out.m:
	Replace everything in this file with just the includes of the
	submodules that now have all its previous contents.

compiler/hlds_llds.m:
	Move a predicate here from llds_out.m, since it is a utility
	predicate operating on a type defined here.

compiler/rtti_out.m:
	Move a predicate here from llds_out.m, since it is a predicate
	generating output from a rtti type.

compiler/hlds_out_mode.m:
	The part of hlds_out.m that deals with writing out insts and modes.

compiler/hlds_out_goal.m:
	The part of hlds_out.m that deals with writing out goals.

compiler/hlds_out_pred.m:
	The part of hlds_out.m that deals with writing out predicates and
	procedures.

compiler/hlds_out_module.m:
	The part of hlds_out.m that deals with writing out module-wide tables.

compiler/hlds_out_util.m:
	Parts of hlds_out.m that don't fit in anywhere else.

compiler/hlds_out.m:
	Replace everything in this file with just the includes of the
	submodules that now have all its previous contents.

compiler/simplify.m:
compiler/hlds_goal.m:
	Move some insts from simplify.m to hlds_goal.m to allow
	hlds_out_goal.m to use them also.

compiler/coverage_profiling.m:
	The part of deep_profiling.m that deals with coverage profiling.

compiler/deep_profiling.m:
	Remove the code moved to coverage_profiling.m, and export the utility
	predicates needed by coverage_profiling.m.

	Remove the things moved to prog_data.m and hlds_goal.m.

	Put the predicates into a more logical order.

compiler/hlds_goal.m:
	Move some predicates here from deep_profiling.m, since they
	belong here.

compiler/prog_data.m:
	Move a type from deep_profiling.m here, since it belongs here.

compiler/add_pragma.m:
	Add a predicate from llds_out.m that is used only here.

compiler/*.m:
	Conform to the changes above.
2009-11-04 03:44:52 +00:00