Commit Graph

15 Commits

Author SHA1 Message Date
Julien Fischer
778e75f696 Fix problems in the library.
library/array.m:
library/builtin.m:
library/construct.m:
    Fix copy-and-paste errors.

library/arrayd2d.m:
    Use the mode array2d_di instead of array_di in a spot.

    Delete an extra space from an exception message.

library/bimap.m:
    Fix formatting.

library/bit_buffer.m:
    Fix inverted argument types.

library/dir.m:
    Say that make_single_directory/4 returns an error rather
    than saying that it fails.

library/io.m:
    Fix errors in obsolete pragmas.

library/assoc_list.m:
library/bag.m:
library/cord.m:
library/deconstruct.m:
library/enum.m:
library/fat_sparse_bitset.m:
library/getopt*.m:
library/int*.m:
library/io*.m:
library/type_desc.m:
    Fix documentation errors.

tests/hard_coded/array2d_from_array.exp:
    Conform to the changed exception message in array2d.m.
2026-02-19 15:24:59 +11:00
Julien Fischer
0b92543c5e Fix more library documentation errors.
library/*.m:
   As above.
2026-01-23 19:53:58 +11:00
Zoltan Somogyi
3f72528869 Update module stability levels. 2025-08-11 22:32:52 +02:00
Zoltan Somogyi
f70b5d6de7 Implement options to warn about unused state vars.
The new --warn-unneeded-initial-statevar option asks the compiler
to warn about code such as

    pred_a(!.X, ...) :-
        ... code that uses !.X, but does not update it ...

In this case, the preferred fix is to just replace all occurrences
of !.X with X.

The new --warn-unneeded-final-statevar option asks the compiler
to warn about code such as

    pred_a(!X, ...) :-
        ... code that maybe uses !.X, but does not update it ...

In this case, the preferred fix also involves replacing all occurrences
of !.X with X, but it also involves either deleting the argument
containing !:X (the best option), or, if there is some reason why
the predicate's signature must stay unchanged, to replace !:X with X as well.
And if the clause body does not actually refer to either !.X or !:X, then
*both* arguments represented by !X should be deleted.

The first option is a style warning; the second option, due to the
signature change it may call for, is a non-style warning.

Both options have a version whose name adds a "-lambda" suffix, and which
does the same warnings for the heads of lambda expressions, not clauses.

Note that several of the modules below, including some that help to implement
the warnings, also contain code changes that result from *acting* on
the new warnings, e.g. by deleting unneeded statevar arguments.
Other, similar changes will also come after this diff is committed.

compiler/options.m:
doc/user_guide.texi:
    Document the new options.

compiler/state_var.m:
    Gather the information needed to decide what code merits the new warnings.
    Do so in three stages:

    - when processing the head of a clause or of a lambda expression,
    - when processing the body goal of that clause or lambda expression,
    - when finishing up the processing of the clause or lambda expression.

    Add a predicate to generate the warnings for lambda expressions.

    Do not generate the warnings for clauses. This is because whether or not
    we want to warn about state vars in some clauses depends on the properties
    of *other* clauses of the same predicate, and state_var.m has access
    to only one clause at a time. Instead,

    - return the info needed by the warning-generating code in pre_typecheck.m
      (one of the first passes we execute after adding all clauses
      to the HLDS), and

    - we export some functionality for use by that code.

    Switch to a convention for naming the program variables corresponding
    to the middle (non-initial, non-final) versions of state variables
    whose output is affected by changes in the code of the clause body goal
    only if they involve that specific state variable.

    Give some predicates more descriptive names.

compiler/make_hlds.m:
    Make state_var.m and its new functionality visible from outside
    the make_hlds package.

compiler/add_clause.m:
    Record the information gathered by state_var.m in each clause.

compiler/hlds_clauses.m:
    Add a slot to each clause for this information.

    Give some predicates more descriptive names.

compiler/headvar_names.m:
    Use the contents of the new slots to detect whether any clauses
    have unused state vars, and if so, return the chosen consensus names
    of the head vars to the code of pre_typecheck.m, which uses this info
    as part of the implementation of the new warnings.

compiler/pre_typecheck.m:
    Implement the new warnings.

compiler/mercury_compile_front_end.m:
    Record the warnings that pre_typecheck.m can now return.

compiler/error_spec.m:
compiler/write_error_spec.m:
    Add unsigned versions of the format pieces involving ints, for use
    by the new code in pre_typecheck.m, and implement them.

compiler/hlds_out_util.m:
compiler/maybe_util.m:
    Move two related types from hlds_out_util.m to maybe_util.m,
    in order to allow pre_typecheck.m to use one of them.

compiler/hlds_args.m:
    Add a new utility function for use by the new code above.

compiler/foreign.m:
    Act on the new warnings by deleting the long-unused predicates
    being warned about.

compiler/post_typecheck.m:
    Speed up this traversal. (I originally thought to implement
    the new warnings in this pass.)

compiler/add_foreign_proc.m:
compiler/add_pragma.m:
compiler/add_pragma_tabling.m:
compiler/add_pragma_type_spec.m:
compiler/add_pred.m:
compiler/add_type.m:
compiler/build_mode_constraints.m:
compiler/call_gen.m:
compiler/check_typeclass.m:
compiler/clause_to_proc.m:
compiler/code_loc_dep.m:
compiler/delay_info.m:
compiler/delay_partial_inst.m:
compiler/dense_switch.m:
compiler/det_check_goal.m:
compiler/det_infer_goal.m:
compiler/disj_gen.m:
compiler/du_type_layout.m:
compiler/format_call.m:
compiler/goal_expr_to_goal.m:
compiler/hlds_dependency_graph.m:
compiler/hlds_out_pred.m:
compiler/hlds_pred.m:
compiler/hlds_rtti.m:
compiler/inst_merge.m:
compiler/instance_method_clauses.m:
compiler/intermod.m:
compiler/interval.m:
compiler/ite_gen.m:
compiler/lookup_switch.m:
compiler/make_hlds_passes.m:
compiler/mark_tail_calls.m:
compiler/mercury_compile_llds_back_end.m:
compiler/mode_errors.m:
compiler/parse_string_format.m:
compiler/passes_aux.m:
compiler/polymorphism.m:
compiler/polymorphism_info.m:
compiler/polymorphism_type_info.m:
compiler/pragma_c_gen.m:
compiler/prop_mode_constraints.m:
compiler/purity.m:
compiler/quantification.m:
compiler/simplify_goal_call.m:
compiler/simplify_goal_conj.m:
compiler/string_switch.m:
compiler/superhomogeneous.m:
compiler/switch_gen.m:
compiler/tag_switch.m:
compiler/type_constraints.m:
compiler/typecheck.m:
compiler/typecheck_clauses.m:
compiler/typecheck_coerce.m:
compiler/typecheck_error_unify.m:
compiler/unify_gen_deconstruct.m:
compiler/unify_proc.m:
compiler/var_origins.m:
    Conform to the changes above, and/or act on the new warnings.

browser/diff.m:
library/bit_buffer.m:
library/getopt.m:
library/getopt_io.m:
library/io.error_util.m:
library/io.file.m:
library/mercury_term_lexer.m:
library/parsing_utils.m:
library/pretty_printer.m:
library/robdd.m:
library/rtti_implementation.m:
library/string.builder.m:
library/string.parse_runtime.m:
mdbcomp/feedback.m:
    Act on the new warnings.

tests/hard_coded/sv_nested_closures.m:
    Change this test's code to avoid the new warnings, since
    (if --halt-at-warn is ever enabled) the warnings would interfere
    with its job .

tests/invalid/bug197.err_exp:
tests/invalid/bug487.err_exp:
tests/invalid/nullary_ho_func_error.err_exp:
tests/invalid/try_detism.err_exp:
tests/warnings/singleton_test_state_var.err_exp:
    Expect variable names for the middle versions of state vars
    using the new naming scheme.
2025-05-18 06:43:24 +10:00
Zoltan Somogyi
a19bcaaed5 Updates to programming style in the library.
library/bt_array.m:
    Reorder the arguments of the resize and shrink predicates
    to make them easier to use with state variables.

tests/general/array_test.m:
    Update the test calls to these two predicates.

library/version_array2d.m:
    Rewrite part of this module using a programming style that includes
    variable names that are longer than one character :-(. In the absence
    of comprehensive, or even basic, test cases, leave the rest using
    the old style.

    Add a non-field-syntax lookup operation.

    Mark the site of a probable bug.

library/version_bitmap.m:
    Add non-field-syntax versions of the get_bit and set_bit operations.

NEWS.md:
    Announce the reordering and the new predicates above.

library/getopt.m:
library/getopt_io.m:
    Apply to getopt_io.m an update that was previously applied to getopt.m,
    even though getopt.m is now computed from getopt_io.m.

library/array2d.m:
library/bit_buffer.m:
library/bit_buffer.read.m:
library/bit_buffer.write.m:
library/bitmap.m:
library/cord.m:
library/edit_distance.m:
library/edit_seq.m:
library/fat_sparse_bitset.m:
library/fatter_sparse_bitset.m:
library/list.m:
library/one_or_more.m:
library/pair.m:
library/ra_list.m:
library/rbtree.m:
library/set_bbbtree.m:
library/set_ctree234.m:
library/set_ordlist.m:
library/set_tree234.m:
library/set_unordlist.m:
library/solutions.m:
library/sparse_bitset.m:
library/test_bitset.m:
library/thread.barrier.m:
library/thread.m:
library/thread.semaphore.m:
library/time.m:
library/tree_bitset.m:
library/version_array.m:
library/version_hash_table.m:
library/version_store.m:
    General updates to style, the main ones being the following.

    Using standard names for type variables:

    - K and V for key and value types in map-like structures
    - A to F for types of accumulators
    - T for most everything else, possibly with a numeric suffix
      to distinguish two separate types that nevertheless play
      similar roles.

    (I left descriptive type var names such as Stream and Store unchanged.)

    Adding or expanding descriptions of exported predicates and functions.

    Declaring and defining field syntax getters and setters without using ^,
    while keeping the use of field syntax, including ^, in the operations'
    descriptions.

    Defining field syntax operations operations in terms of the
    non-field-syntax versions, not vice versa.

    Defining function versions of operations in terms of the predicate
    versions, not vice versa.
2024-12-29 20:09:09 +11:00
Zoltan Somogyi
06f81f1cf0 Add end_module declarations ...
.. to modules which did not yet have them.
2022-01-09 10:36:15 +11:00
Julien Fischer
f89054f165 Use error($pred, "...") in more spots in the standard library.
Also, throw software_error/1 exceptions rather than directly throwing strings
in a few spots.

Undo special Ralph-style formatting.

library/*.:
    As above.

tests/hard_coded/array2d_from_array.exp:
tests/hard_coded/array2d.exp:
tests/hard_coded/test_injection.exp:
   Update to conform with the above change.
2019-10-15 17:48:36 +11:00
Zoltan Somogyi
c7f8ebbe2f Avoid warnings from --warn-non-contiguous-{clauses,foreign-procs}.
browser/collect_lib.m:
browser/declarative_execution.m:
browser/dl.m:
browser/io_action.m:
compiler/make.util.m:
compiler/pickle.m:
compiler/process_util.m:
compiler/prog_event.m:
library/array.m:
library/benchmarking.m:
library/bit_buffer.m:
library/builtin.m:
library/char.m:
library/deconstruct.m:
library/dir.m:
library/erlang_rtti_implementation.m:
library/int.m:
library/int16.m:
library/int32.m:
library/int64.m:
library/int8.m:
library/io.m:
library/math.m:
library/mutvar.m:
library/private_builtin.m:
library/profiling_builtin.m:
library/rtti_implementation.m:
library/store.m:
library/string.format.m:
library/string.m:
library/table_builtin.m:
library/term_size_prof_builtin.m:
library/thread.m:
library/time.m:
library/type_desc.m:
library/uint16.m:
library/uint32.m:
library/uint64.m:
library/uint8.m:
ssdb/ssdb.m:
    As above. This mostly involved two things.

    The first was grouping foreign_procs by predicate instead of by language.
    In a few cases, this revealed that some predicates *had* no foreign_proc
    for a language, while related predicates did have one that just aborted
    if called. This diff adds similar aborting foreign_procs to predicate/
    language combinations that were missing them, when this seemed obviously
    the right thing to do.

    The second was moving pragmas about a predicate from the middle of the
    block of clauses of that predicate to the start of that block.
2018-10-19 11:01:33 +11:00
Mark Brown
d465fa53cb Update the COPYING.LIB file and references to it.
Discussion of these changes can be found on the Mercury developers
mailing list archives from June 2018.

COPYING.LIB:
    Add a special linking exception to the LGPL.

*:
    Update references to COPYING.LIB.

    Clean up some minor errors that have accumulated in copyright
    messages.
2018-06-09 17:43:12 +10:00
Zoltan Somogyi
7f9791aa26 Standardize divider line lengths in the library.
library/*.m:
    As above.

tool/stdlines:
    A new shell script to do the job.
2014-11-23 22:05:34 +11:00
Peter Wang
7688546d03 Add thread_safe and not_thread_safe attributes.
library/benchmarking.m:
library/bit_buffer.m:
library/exception.m:
library/gc.m:
library/io.m:
library/library.m:
library/thread.m:
library/time.m:
	Add `thread_safe' or `not_thread_safe' to foreign procs
	where it is clear which is correct.
2014-07-25 17:45:33 +10:00
Peter Wang
7e26b55e74 Implement a new form of memory profiling, which tells the user what memory
Branches: main

Implement a new form of memory profiling, which tells the user what memory
is being retained during a program run.  This is done by allocating an extra
word before each cell, which is used to "attribute" the cell to an
allocation site.  The attribution, or "allocation id", is an address to an
MR_AllocSiteInfo structure generated by the Mercury compiler, giving the
procedure, filename and line number of the allocation, and the type
constructor and arity of the cell that it allocates.

The user must manually instrument the program with calls to
`benchmarking.report_memory_attribution', which forces a GC and summarises
the live objects on the heap using the attributions.  The mprof tool is
extended with a new mode to parse and present that data.

Objects which are unattributed (e.g. by hand-written C code which hasn't
been updated) are still accounted for, but show up in profiles as "unknown".

Currently this profiling mode only works in conjunction with the Boehm
garbage collector, though in principle it can work with any memory allocator
for which we can access a list of the live objects.  Since term size
profiling relies on the same technique of using an extra word per memory
cell, the two profiling modes are incompatible.

The output from `mprof -s' looks like this:

------ [1] some label ------
   cells            words         cumul  procedure / type (location)
   14150            38872                total

*   1949/ 13.8%      4872/ 12.5%  12.5%  <predicate `parser.parse_rest/7' mode 0>
     975/  6.9%      1950/  5.0%         list.list/1 (parser.m:502)
     487/  3.4%      1948/  5.0%         term.term/1 (parser.m:501)
     487/  3.4%       974/  2.5%         term.const/0 (parser.m:501)

*   1424/ 10.1%      4272/ 11.0%  23.5%  <predicate `parser.parse_simple_term_2/6' mode 0>
     708/  5.0%      2832/  7.3%         term.term/1 (parser.m:643)
     708/  5.0%      1416/  3.6%         term.const/0 (parser.m:643)
...


boehm_gc/alloc.c:
boehm_gc/include/gc.h:
boehm_gc/misc.c:
boehm_gc/reclaim.c:
	Add a callback function to be called for every live object after a GC.

	Add a function to write out the GC_size_map array.

compiler/layout.m:
	Define the alloc_site_info type which is equivalent to the
	MR_AllocSiteInfo C structure.

	Add alloc_site_array as a kind of "layout" array.

compiler/llds.m:
	Add allocation sites to `cfile' structure.

	Replace TypeMsg argument (which was also for profiling) on `incr_hp'
	instructions by an allocation site identifier.

	Add a new foreign_proc_component for allocation site ids.

compiler/code_info.m:
compiler/global_data.m:
compiler/proc_gen.m:
	Keep the set of allocation sites in the code_info and global_data
	structures.

compiler/unify_gen.m:
	Add allocation sites to LLDS allocation instructions.

compiler/layout_out.m:
compiler/llds_out_file.m:
compiler/llds_out_instr.m:
	Output MR_AllocSiteInfo arrays in generated C files.

	Output code to register the MR_AllocSiteInfo array with the Mercury
	runtime.

	Output allocation site ids for memory allocation instructions.

compiler/llds_out_util.m:
	Add allocation sites to llds_out_info.

compiler/pragma_c_gen.m:
compiler/ml_foreign_proc_gen.m:
	Generate a macro MR_ALLOC_ID which resolves to an allocation site
	structure, for every foreign_proc whose C code contains the string
	"MR_ALLOC_ID".  This is to be used by hand-written C code which
	allocates memory.

	MR_PROC_LABELs are retained for backwards compatibility.  Though
	they were introduced for profiling, they seem to have been co-opted
	for printf-debugging since then.

compiler/ml_global_data.m:
	Add allocation site structures to the MLDS global data.

compiler/mlds.m:
compiler/ml_unify_gen.m:
	Add allocation site id to `new_object' instruction.

compiler/mlds_to_c.m:
	Output allocation site arrays and allocation ids in high-level C code.

	Output a call to register the allocation site array with the Mercury
	runtime.

	Delete an unused predicate.

compiler/exprn_aux.m:
compiler/jumpopt.m:
compiler/livemap.m:
compiler/mercury_compile_llds_back_end.m:
compiler/middle_rec.m:
compiler/ml_accurate_gc.m:
compiler/ml_elim_nested.m:
compiler/ml_optimize.m:
compiler/ml_util.m:
compiler/mlds_to_cs.m:
compiler/mlds_to_gcc.m:
compiler/mlds_to_il.m:
compiler/mlds_to_java.m:
compiler/mlds_to_managed.m:
compiler/opt_debug.m:
compiler/opt_util.m:
compiler/use_local_vars.m:
compiler/var_locn.m:
	Conform to changes.

compiler/pickle.m:
compiler/prog_event.m:
compiler/timestamp.m:
	Conform to changes in memory allocation macros.

library/benchmarking.m:
	Add the `report_memory_attribution' instrumentation predicates.

	Conform to changes to MR_memprof_record.

library/array.m:
library/bit_buffer.m:
library/bitmap.m:
library/construct.m:
library/deconstruct.m:
library/dir.m:
library/io.m:
library/mutvar.m:
library/store.m:
library/string.m:
library/thread.semaphore.m:
library/version_array.m:
	Use attributed memory allocation throughout the standard library so
	that objects don't show up in the memory profile as "unknown".

	Replace MR_PROC_LABEL by MR_ALLOC_ID.

mdbcomp/program_representation.m:
mdbcomp/rtti_access.m:
	Replace MR_PROC_LABEL by MR_ALLOC_ID.

profiler/Mercury.options:
profiler/globals.m:
profiler/mercury_profile.m:
profiler/options.m:
profiler/output.m:
profiler/snapshots.m:
	Add a new mode to `mprof' to parse and present the data from
	`Prof.Snapshots' files.

	Add options for the new profiling mode.

profiler/process_file.m:
	Fix a typo.

runtime/mercury_conf_param.h:
	#define MR_MPROF_PROFILE_MEMORY_ATTRIBUTION if memory profiling
	is enabled and we are using Boehm GC.

runtime/mercury.h:
	Make MR_new_object take an allocation id argument.

	Conform to changes in memory allocation macros.

runtime/mercury_memory.c:
runtime/mercury_memory.h:
runtime/mercury_types.h:
	Define MR_AllocSiteInfo.

	Add memory allocation functions and macros which take into the
	account the additional word necessary for the new profiling mode.
	These should be used in preferences to the raw memory allocation
	functions wherever possible so that objects do not show up in the
	profile as "unknown".

	Add analogues of realloc/free which take into account the offset
	introduced by the attribution word.

	Add function versions of the MR_new_object macros, which can't be
	written in standard C.  They are only used when necessary.

	Add built-in allocation site ids, to be used in the runtime and
	other hand-written code when context-specific ids are unavailable.

runtime/mercury_heap.h:
	Make MR_tag_offset_incr_hp_msg and MR_tag_offset_incr_hp_atomic_msg
	allocate an extra word when memory attribution is desired, and store
	the allocation id there.

	Similarly for MR_create{1,2,3}_msg.

	Replace proclabel arguments in allocation macros by alloc_id
	arguments.

	Replace MR_hp_alloc_atomic by MR_hp_alloc_atomic_msg.  It was only
	used for boxing floats.

	Conform to change to MR_new_object macro.

runtime/mercury_bootstrap.h:
	Delete obsolete macro hp_alloc_atomic.

runtime/mercury_heap_profile.c:
runtime/mercury_heap_profile.h:
	Add the code to summarise the live objects on the Boehm GC heap and
	writes out the data to `Prof.Snapshots', for display by mprof.

	Don't store the procedure name in MR_memprof_record: the procedure
	address is enough and faster to compare.

runtime/mercury_prof.c:
	Finish and close the `Prof.Snapshots' file when the program
	terminates.

	Conform to changes in MR_memprof_record.

runtime/mercury_misc.h:
	Add a macro to expand to the name of the allocation sites array
	in LLDS grades.

runtime/mercury_bitmap.c:
runtime/mercury_bitmap.h:
	Pass allocation id through bitmap allocation functions.

	Delete unused function MR_string_to_bitmap.

runtime/mercury_string.h:
	Add MR_make_aligned_string_copy_msg.

	Make string allocation macros take allocation id arguments.

runtime/mercury.c:
runtime/mercury_array_macros.h:
runtime/mercury_context.c:
runtime/mercury_deconstruct.c:
runtime/mercury_deconstruct_macros.h:
runtime/mercury_dlist.c:
runtime/mercury_engine.c:
runtime/mercury_float.h:
runtime/mercury_hash_table.c:
runtime/mercury_ho_call.c:
runtime/mercury_label.c:
runtime/mercury_prof_mem.c:
runtime/mercury_stacks.c:
runtime/mercury_stm.c:
runtime/mercury_string.c:
runtime/mercury_thread.c:
runtime/mercury_trace_base.c:
runtime/mercury_trail.c:
runtime/mercury_type_desc.c:
runtime/mercury_type_info.c:
runtime/mercury_wsdeque.c:
	Use attributed memory allocation throughout the runtime so that
	objects don't show up in the profile as "unknown".

runtime/mercury_memory_zones.c:
	Attribute memory zones to the Mercury runtime.

runtime/mercury_tabling.c:
runtime/mercury_tabling.h:
	Use attributed memory allocation macros for tabling structures.

	Delete unused MR_table_realloc_* and MR_table_copy_bytes macros.

runtime/mercury_deep_copy_body.h:
	Try to retain the original attribution word when copying values.

runtime/mercury_ml_expand_body.h:
	Conform to changes in memory allocation macros.

runtime/mercury_tags.h:
	Replace proclabel arguments by alloc_id arguments in allocation macros.

runtime/mercury_wrapper.c:
	If memory attribution is enabled, tell Boehm GC that pointers may be
	displaced by an extra word.

trace/mercury_trace.c:
trace/mercury_trace_tables.c:
	Conform to changes in memory allocation macros.

extras/net/tcp.m:
extras/solver_types/library/any_array.m:
extras/trailed_update/tr_array.m:
	Conform to changes in memory allocation macros.

doc/user_guide.texi:
	Document the new profiling mode.

doc/reference_manual.texi:
	Update a commented out example.
2011-05-20 04:16:58 +00:00
Zoltan Somogyi
c509c49bdc Add a mechanism for generating warnings when the various clauses of a predicate
Estimated hours taken: 24
Branches: main

Add a mechanism for generating warnings when the various clauses of a predicate
or function are not contiguous.

This mechanism consists of two options:

	--warn-non-contiguous-clauses
	--warn-non-contiguous-foreign-procs

The first option generates warnings when the Mercury clauses of a predicate
or function are not contiguous, but it ignores any foreign_procs of that
predicate or function, and thus allows these to be away from the Mercury
clauses and each other. This option is enabled by default.

The second option generating warnings unless both the Mercury clauses and
all the foreign_procs of the predicate or function are all contiguous.
This option is not enabled by default, because many library modules
group foreign_procs not by predicate, but by foreign language. (All C foreign
procs for a group of predicates, then all the Java foreign procs for that group
of predicates, etc.)

compiler/hlds_clauses.m:
	Store, next to the representation of each clause list, information
	about the locations (item numbers and context) of the clauses.
	We store two versions of this information, one version for each option.

	Make the predicates that access the clause list access the location
	information as well, to ensure that any code that adds clauses also
	records their location.

	Add a predicate that tests for non-contiguity.

	Add a specific type to represent the modes that a clause applies to.
	This replaces the error-prone scheme we used to use that represented
	the notion "this clause applies to all modes" with an empty list of
	modes. This allows us to remove the code in add_pragma.m that used
	to replace these empty lists with the list of actual modes they
	represented.

	Change the prefix on the fields of clauses_info to avoid ambiguities.
	Add a prefix to the names of the function symbols of the clauses_rep
	type to avoid ambiguities.

compiler/add_clause.m:
compiler/add_pragma.m:
	When adding Mercury clauses and pragma foreign_procs to a predicate or
	function, record the location of the clause or foreign_procs. We do so
	even if the clause or foreign_proc is overridden by another. For
	example, when compiling to C, a Mercury clause overrides an Erlang
	foreign_proc, and a C foreign_proc overrides a Mercury clause.

	Fix an old bug where a foreign_proc that should override Mercury
	clauses overrode only one Mercury clause, and left the others
	in the predicate, to yield a disjunction with some Mercury disjuncts
	and a foreign_proc disjunct. This disjunction would then yield
	determinism errors if it had outputs.

	The new code that fixes the bug has a much more direct implicit
	correctness argument, and should be significantly easier to understand.
	It also avoids doing unnecessary work. (The old code could make a
	decision to ignore a clause, yet still proceed to transform it,
	just to ignore the result of the transformation.)

compiler/options.m:
	Add the new options.

doc/user_guide.texi:
	Document the new options. Fix an inconsistency between options.m and
	user_guide.texi for a nearby option.

compiler/make_hlds_passes.m:
	Pass the information that add_clause.m and add_pragma.m need.

compiler/typecheck.m:
	Detect non-contiguous clauses and call typecheck_errors to generate
	error messages.

compiler/typecheck_errors.m:
	Add functions for formatting error messages about non-contiguous
	clauses.

compiler/hlds_out.m:
	Do not print the modes to which a clause applies for the usual case,
	in which the clause applies to all modes.

compiler/clause_to_proc.m:
	Simplify some code.

	Rename a predicate to better reflect its purpose.

	Conform to the changes above.

compiler/intermod.m:
	Rename a predicate to avoid ambiguities.

	Conform to the changes above.

compiler/add_class.m:
compiler/add_pred.m:
compiler/add_special_pred.m:
compiler/assertion.m:
compiler/build_mode_constraints.m:
compiler/dead_proc_elim.m:
compiler/dependency_graph.m:
compiler/goal_path.m:
compiler/headvar_names.m:
compiler/hhf.m:
compiler/higher_order.m:
compiler/hlds_pred.m:
compiler/implementation_defined_literals.m:
compiler/mode_constraints.m:
compiler/modes.m:
compiler/ordering_mode_constraints.m:
compiler/polymorphism.m:
compiler/post_typecheck.m:
compiler/proc_gen.m:
compiler/prop_mode_constraints.m:
compiler/purity.m:
compiler/type_constraints.m:
compiler/unify_proc.m:
compiler/unused_imports.m:
	Conform to the changes above.

compiler/goal_form.m:
	The new warnings pointed out a non-contiguous clause in goal_form.m.
	Since this clause happened to be a duplicate of another clause, this
	diff deletes it. The duplicate clause was not detected because the
	predicate is semidet, and has no outputs.

compiler/mlds_to_c.m:
compiler/rbmm.points_to_analysis.m:
deep_profiler/measurements.m:
library/library.m:
library/list.m:
	Fix non-contiguous clauses pointed out by the new warnings.

library/bit_buffer.m:
	Fix programming style.

tests/invalid/types2.err_exp:
	This test has non-contiguous clauses, so expect the new warning.

tests/warnings/warn_contiguous.{m,exp}:
tests/warnings/warn_non_contiguous.{m,exp}:
tests/warnings/warn_non_contiguous_foreign.{m,exp}:
tests/warnings/warn_non_contiguous_foreign_group.{m,exp}:
	New test cases that exercise the new capability.

tests/warnings/Mmakefile:
tests/warnings/Mercury.options:
	Enable and specify the options for the new tests.
2009-08-19 07:45:13 +00:00
Peter Wang
8fb83bcfb1 Fix incorrect result type on new_buffer_2.
Estimated hours taken: 0.2
Branches: main

library/bit_buffer.m:
	Fix incorrect result type on new_buffer_2.

library/math.m:
	Fix Erlang implementation of math.round/1.

library/profiling_builtin.m:
library/table_builtin.m:
	Add Erlang stubs for :- external procedures for deep profiling and
	tabling.
2007-05-31 03:03:37 +00:00
Simon Taylor
d73e2187fb Add bit_buffers to the standard library. A bit_buffer
Estimated hours taken: 90
Branches: main

NEWS:
library/bit_buffer.m:
library/bit_buffer.read.m:
library/bit_buffer.write.m:
	Add bit_buffers to the standard library.  A bit_buffer
	provides a bit-oriented interface to byte streams.
	These will be used as a base for write_binary and read_binary.

library/stream.m:
	Add class which supports reading multiple items at once into
	a store.

	Clarify the blocking behaviour of `put' and `get'.

	Document the behaviour of subsequent calls to `get'
	after a call returns eof or an error.

library/bitmap.m:
	Add a shorthand for `new(N, no)'.

	Add `shrink_without_copying' to destructively shrink a bitmap
	without copying the data.

	Add a function `append_list' to condense a list of bitmaps.

	Improve bounds error messages.

	Clean up the handling of zero-length bit ranges.

	Add type `bitmap.slice' to represent a segment of a bitmap,
	and functions to create slices.

library/io.m:
	Change the interface of io.read_bitmap to conform to
	the stream.bulk_reader interface, by not returning the
	bitmap inside the return code.  The bitmap is still
	valid (although maybe not completely filled) no matter
	what result is returned.

	Add io.read_binary_file_as_bitmap/N.

library/library.m:
	Add recent additions to the list of library modules.

library/Mercury.options:
	Use "+=" rather than "=" when setting target-specific
	options to allow them to be added to be Mmake.params.

tests/hard_coded/Mmakefile:
tests/hard_coded/bit_buffer_test.m:
tests/hard_coded/bit_buffer_test.exp:
	Test case.

tests/hard_coded/bitmap_test.m:
tests/hard_coded/bitmap_simple.m:
tests/hard_coded/bitmap_test.exp:
	Update for change to io.read_bitmap.

	Test bounds error messages.
2007-05-30 02:47:10 +00:00