Files
mercury/compiler/options.m
Fergus Henderson 6921e0e015 Add a `--debug' option for Mercury-level debugging
Estimated hours taken: 6

Add a `--debug' option for Mercury-level debugging
using the trace-based debugger.

scripts/init_grade_options.sh-subr:
scripts/parse_grade_options.sh-subr:
scripts/mgnuc.in:
scripts/ml.in:
compiler/options.m:
compiler/handle_options.m:
compiler/mercury_compile.m:
	Split the old `--debug' option into `--low-level-debug'
	(formerly the absence of -DSPEED, now handle by -DLOWLEVEL_DEBUG)
	and `--c-debug' (passes -g to C compiler).
	Delete the old `debug' grade.
	Add support for new options `--require-tracing'
	(makes --trace minimum equivalent to --trace interfaces,
	and passes -DMR_REQUIRE_TRACING to C compiler)
	`--stack-trace' (passes -DMR_STACK_TRACE to C compiler;
	actually this one was already supported)
	and `--debug' (implies previous two),
	with corresponding grade modifiers `.trace', `.strce', and `.debug'.
	Actually I think there's little point in specifying just one
	of `--require-tracing' and `--stack-trace' so for the moment
	I'm just providing `--debug': the code for the more fine-grained
	options and grade modifiers has been added but commented out.

runtime/mercury_conf_param.h:
	Document the new configuration parameter MR_REQUIRE_TRACING
	and the existing but undocumented parameter MR_STACK_TRACE.

runtime/mercury_grade.h:
	Include MR_REQUIRE_TRACING in the mangled grade identifier.

compiler/globals.m:
compiler/handle_options.m:
compiler/options.m:
	Allow new tracing type `--trace default', and make it the default.
	This gets replaced with `full' if require_tracing is yes
	or `minimal' if require_tracing is no.
	Also `--trace minimum' gets replaced with `interface' if
	require_tracing is yes.

doc/user_guide.texi:
	Document the new `--debug', `--low-level-debug', and `--c-debug'
	options.

scripts/mgnuc.in:
compiler/mercury_compile.m:
doc/user_guide.texi:
	Change things so that `--c-debug' does not imply `--no-c-optimize'.

configure.in:
	Add `-fomit-frame-pointer' to CFLAGS_FOR_GOTOS on alpha-*.
	Empirically, this seems to be needed, otherwise lots of
	the test cases fail when compiled with `--no-c-optimize'.
	(It might also be needed for other architectures, I don't know.)
1998-05-20 11:11:57 +00:00

1930 lines
84 KiB
Mathematica

%-----------------------------------------------------------------------------%
% Copyright (C) 1994-1998 The University of Melbourne.
% This file may only be copied under the terms of the GNU General
% Public License - see the file COPYING in the Mercury distribution.
%-----------------------------------------------------------------------------%
% File: options.m.
% Main author: fjh.
% This defines the stuff necessary so that getopt.m
% can parse the command-line options.
% IMPORTANT NOTE: any changes to the options should be
% reflected in both the help message produced below,
% and in the Mercury User's Guide (../doc/user_guide.texi).
%-----------------------------------------------------------------------------%
:- module options.
:- interface.
:- import_module char, io, getopt.
:- pred short_option(char::in, option::out) is semidet.
:- pred long_option(string::in, option::out) is semidet.
:- pred option_defaults(option::out, option_data::out) is nondet.
:- pred special_handler(option::in, special_data::in, option_table::in,
maybe_option_table::out) is semidet.
% special_handler(Option, ValueForThatOption, OptionTableIn,
% MaybeOptionTableOut).
% This predicate is invoked whenever getopt finds an option
% (long or short) designated as special, with special_data holding
% the argument of the option (if any). The predicate can change the
% option table in arbitrary ways in the course of handling the option,
% or it can return an error message.
% The canonical examples of special options are -O options in compilers,
% which set many other options at once.
% The MaybeOptionTableOut may either be ok(OptionTableOut), or it may
% be error(ErrorString).
:- pred options_help(io__state::di, io__state::uo) is det.
:- type option_table == option_table(option).
:- type maybe_option_table == maybe_option_table(option).
:- type option
% Warning options
---> inhibit_warnings
; halt_at_warn
; halt_at_syntax_errors
; warn_singleton_vars
; warn_overlapping_scopes
; warn_det_decls_too_lax
; warn_nothing_exported
; warn_unused_args
; warn_interface_imports
; warn_missing_opt_files
; warn_missing_trans_opt_deps
; warn_non_stratification
; warn_simple_code
; warn_duplicate_calls
; warn_missing_module_name
; warn_wrong_module_name
% Verbosity options
; verbose
; very_verbose
; verbose_errors
; statistics
; debug_types
; debug_modes
; debug_det
; debug_opt
; debug_vn % vn = value numbering
; debug_pd % pd = partial deduction/deforestation
% Output options
; make_short_interface
; make_interface
; make_private_interface
; make_optimization_interface
; make_transitive_opt_interface
; generate_dependencies
; generate_module_order
; convert_to_mercury
; convert_to_goedel
; typecheck_only
; errorcheck_only
; compile_to_c
; compile_only
% Auxiliary output options
; assume_gmake
; trace
; generate_bytecode
; generate_prolog
; prolog_dialect
; line_numbers
; auto_comments
; show_dependency_graph
; dump_hlds
; verbose_dump_hlds
% Language semantics options
; reorder_conj
; reorder_disj
; fully_strict
; strict_sequential
; infer_types
; infer_modes
; infer_det
; infer_all
; type_inference_iteration_limit
; mode_inference_iteration_limit
% Compilation Model options
; grade
; gcc_non_local_gotos
; gcc_global_registers
; asm_labels
; gc
; profiling % profile_time + profile_calls
; time_profiling % profile_time + profile_calls
; memory_profiling % profime_mem + profile_calls
; profile_calls
; profile_time
; profile_memory
; debug
; stack_trace
; require_tracing
; use_trail
; pic_reg
; tags
; num_tag_bits
; bits_per_word
; bytes_per_word
; conf_low_tag_bits
% The undocumented conf_low_tag_bits option
% is used by the `mmc' script to pass the
% default value for num_tag_bits
% assuming --tags low.
% The reason that `mmc' doesn't just
% pass a default value for --num-tag-bits
% is that we want to be able to give an
% error message if the user specifies
% `--tags high' and doesn't specify
% `--num-tag-bits'.
; args
; type_layout
% Stack layout information required to do
% a stack trace.
; basic_stack_layout
% Stack layout information required to do
% accurate GC.
; agc_stack_layout
% Stack layout information required to do
% procedure identification.
; procid_stack_layout
% Stack layout information required to do
% tracing.
; trace_stack_layout
% Use an alternate calculation of liveness
% where typeinfos are live for any live data
% the includes that type variable.
; typeinfo_liveness
; highlevel_c
; unboxed_float
% Code generation options
; low_level_debug
; trad_passes
; polymorphism
; reclaim_heap_on_failure
; reclaim_heap_on_semidet_failure
; reclaim_heap_on_nondet_failure
; lazy_code
; have_delay_slot
; num_real_r_regs
; num_real_f_regs
; num_real_r_temps
; num_real_f_temps
; cc
; cflags
; cflags_for_regs
; cflags_for_gotos
; c_debug
; c_include_directory
; aditi
; fact_table_max_array_size
% maximum number of elements in a single
% fact table data array
; fact_table_hash_percent_full
% how full the fact table hash tables should
% be allowed to get, given as an integer
% percentage.
% Optimization Options
; opt_level
; opt_space % default is to optimize time
; intermodule_optimization
; transitive_optimization
; split_c_files
% - HLDS
; inlining
; inline_simple
; inline_single_use
; inline_compound_threshold
; inline_simple_threshold
; inline_vars_threshold
; intermod_inline_simple_threshold
; common_struct
; common_goal
; constraint_propagation
; optimize_unused_args
; intermod_unused_args
; optimize_higher_order
; optimize_constructor_last_call
; optimize_duplicate_calls
; constant_propagation
; excess_assign
; optimize_saved_vars
; follow_code
; prev_code
; optimize_dead_procs
; deforestation
; deforestation_depth_limit
; deforestation_cost_factor
; deforestation_vars_threshold
; termination
; check_termination
; verbose_check_termination
; termination_single_args
; termination_norm
; termination_error_limit
; termination_path_limit
% - HLDS->LLDS
; smart_indexing
; dense_switch_req_density
; lookup_switch_req_density
; dense_switch_size
; lookup_switch_size
; string_switch_size
; tag_switch_size
; try_switch_size
; binary_switch_size
; static_ground_terms
; middle_rec
; simple_neg
; follow_vars
% - LLDS
; optimize
; optimize_peep
; optimize_jumps
; optimize_fulljumps
; optimize_labels
; optimize_dups
%%% unused: ; optimize_copyprop
; optimize_value_number
; optimize_frames
; optimize_delay_slot
; optimize_repeat
; optimize_vnrepeat
; pred_value_number
; vn_fudge
% - C
; use_macro_for_redo_fail
; emit_c_loops
; procs_per_c_function
; everything_in_one_c_function
; c_optimize
; inline_alloc
% Link options
; output_file_name
; link_flags
; link_library_directories
; link_libraries
; link_objects
% Miscellaneous Options
; heap_space
; search_directories
; intermod_directories
; use_search_directories_for_intermod
; use_subdirs
; help.
:- implementation.
:- import_module string, bool, int, map, std_util, assoc_list, require, list.
:- import_module handle_options.
:- type option_category
---> warning_option
; verbosity_option
; output_option
; aux_output_option
; language_semantics_option
; compilation_model_option
; code_gen_option
; special_optimization_option
; optimization_option
; link_option
; miscellaneous_option.
option_defaults(Option, Default) :-
option_defaults_2(_Category, OptionsList),
list__member(Option - Default, OptionsList).
:- pred option_defaults_2(option_category, list(pair(option, option_data))).
:- mode option_defaults_2(in, out) is det.
:- mode option_defaults_2(out, out) is multidet.
option_defaults_2(warning_option, [
% Warning Options
inhibit_warnings - bool_special,
halt_at_warn - bool(no),
halt_at_syntax_errors - bool(no),
%
% IMPORTANT NOTE:
% if you add any new warning options, or if you change
% the default for an existing warning option to `yes',
% then you will need to modify the handling of inhibit_warnings
%
warn_singleton_vars - bool(yes),
warn_overlapping_scopes - bool(yes),
warn_det_decls_too_lax - bool(yes),
warn_nothing_exported - bool(yes),
warn_unused_args - bool(no),
warn_interface_imports - bool(yes),
warn_non_stratification - bool(no),
warn_missing_opt_files - bool(yes),
warn_missing_trans_opt_deps - bool(yes),
warn_simple_code - bool(yes),
warn_duplicate_calls - bool(no),
warn_missing_module_name - bool(yes),
warn_wrong_module_name - bool(yes)
]).
option_defaults_2(verbosity_option, [
% Verbosity Options
verbose - bool(no),
very_verbose - bool(no),
verbose_errors - bool(no),
statistics - bool(no),
debug_types - bool(no),
debug_modes - bool(no),
debug_det - bool(no),
debug_opt - bool(no),
debug_vn - int(0),
debug_pd - bool(no)
]).
option_defaults_2(output_option, [
% Output Options (mutually exclusive)
generate_dependencies - bool(no),
generate_module_order - bool(no),
make_short_interface - bool(no),
make_interface - bool(no),
make_private_interface - bool(no),
make_optimization_interface - bool(no),
make_transitive_opt_interface - bool(no),
convert_to_mercury - bool(no),
convert_to_goedel - bool(no),
typecheck_only - bool(no),
errorcheck_only - bool(no),
compile_to_c - bool(no),
compile_only - bool(no)
]).
option_defaults_2(aux_output_option, [
% Auxiliary Output Options
assume_gmake - bool(yes),
trace - string("default"),
generate_bytecode - bool(no),
generate_prolog - bool(no),
prolog_dialect - string("default"),
line_numbers - bool(no),
auto_comments - bool(no),
show_dependency_graph - bool(no),
dump_hlds - accumulating([]),
verbose_dump_hlds - string("")
]).
option_defaults_2(language_semantics_option, [
strict_sequential - special,
reorder_conj - bool(yes),
reorder_disj - bool(yes),
fully_strict - bool(yes),
infer_types - bool(no),
infer_modes - bool(no),
infer_det - bool(yes),
infer_all - bool_special,
type_inference_iteration_limit - int(60),
mode_inference_iteration_limit - int(30)
]).
option_defaults_2(compilation_model_option, [
% Compilation model options (ones that affect binary
% compatibility).
grade - string_special,
% the `mmc' script will pass the
% default grade determined
% at configuration time
gcc_non_local_gotos - bool(yes),
gcc_global_registers - bool(yes),
asm_labels - bool(yes),
gc - string("conservative"),
profiling - bool_special,
time_profiling - special,
memory_profiling - special,
profile_calls - bool(no),
profile_time - bool(no),
profile_memory - bool(no),
debug - bool_special,
require_tracing - bool(no),
stack_trace - bool(no),
use_trail - bool(no),
pic_reg - bool(no),
tags - string("low"),
num_tag_bits - int(-1),
% -1 is a special value which means
% use the value of conf_low_tag_bits
% instead
bits_per_word - int(32),
% A good default for the current
% generation of architectures.
bytes_per_word - int(4),
% A good default for the current
% generation of architectures.
conf_low_tag_bits - int(2),
% the `mmc' script will override the
% above default with a value determined
% at configuration time
args - string("compact"),
type_layout - bool(yes),
basic_stack_layout - bool(no),
agc_stack_layout - bool(no),
procid_stack_layout - bool(no),
trace_stack_layout - bool(no),
typeinfo_liveness - bool(no),
highlevel_c - bool(no),
unboxed_float - bool(no)
]).
option_defaults_2(code_gen_option, [
% Code Generation Options
low_level_debug - bool(no),
trad_passes - bool(yes),
polymorphism - bool(yes),
lazy_code - bool(yes),
reclaim_heap_on_failure - bool_special,
reclaim_heap_on_semidet_failure - bool(yes),
reclaim_heap_on_nondet_failure - bool(yes),
have_delay_slot - bool(no),
% the `mmc' script may override the
% above default if configure says
% the machine has branch delay slots
num_real_r_regs - int(5),
num_real_f_regs - int(0),
num_real_r_temps - int(5),
num_real_f_temps - int(0),
% the `mmc' script will override the
% above defaults with values determined
% at configuration time
cc - string("gcc"),
% the `mmc' script will override the
% above default with a value determined
% at configuration time
cflags - accumulating([]),
cflags_for_regs - string(""),
cflags_for_gotos - string(""),
% the `mmc' script will override the
% above two defaults with values
% determined at configuration time
c_debug - bool(no),
c_include_directory - string(""),
% the `mmc' script will override the
% above default with a value determined
% at configuration time
aditi - bool(no),
fact_table_max_array_size - int(1024),
fact_table_hash_percent_full - int(90)
]).
option_defaults_2(special_optimization_option, [
% Special optimization options.
% These ones are not affected by `-O<n>'.
opt_level - int_special,
opt_space - special,
intermodule_optimization - bool(no),
transitive_optimization - bool(no),
check_termination - bool(no),
verbose_check_termination - bool(no),
termination - bool(no),
termination_single_args - int(0),
termination_norm - string("total"),
termination_error_limit - int(3),
termination_path_limit - int(256),
split_c_files - bool(no)
]).
option_defaults_2(optimization_option, [
% Optimization options
%
% IMPORTANT: the default here should be all optimizations OFF.
% Optimizations should be enabled by the appropriate
% optimization level in the opt_level table.
%
% HLDS
inlining - bool_special,
inline_simple - bool(no),
inline_single_use - bool(no),
inline_compound_threshold - int(0),
inline_simple_threshold - int(5), % has no effect until
% --inline-simple is enabled
inline_vars_threshold - int(100),
intermod_inline_simple_threshold - % has no effect until
int(5), % --intermodule-optimization
common_struct - bool(no),
common_goal - bool(yes),
% common_goal is not really an optimization, since
% it affects the semantics
constraint_propagation - bool(no),
optimize_duplicate_calls - bool(no),
constant_propagation - bool(no),
excess_assign - bool(no),
optimize_saved_vars - bool(no),
prev_code - bool(no),
follow_code - bool(no),
optimize_unused_args - bool(no),
intermod_unused_args - bool(no),
optimize_higher_order - bool(no),
optimize_constructor_last_call - bool(no),
optimize_dead_procs - bool(no),
deforestation - bool(no),
deforestation_depth_limit - int(4),
deforestation_cost_factor - int(1000),
deforestation_vars_threshold - int(200),
% HLDS -> LLDS
smart_indexing - bool(no),
dense_switch_req_density - int(25),
% Minimum density before using a dense switch
lookup_switch_req_density - int(25),
% Minimum density before using a lookup switch
dense_switch_size - int(4),
lookup_switch_size - int(4),
string_switch_size - int(8),
tag_switch_size - int(3),
try_switch_size - int(3),
binary_switch_size - int(4),
static_ground_terms - bool(no),
middle_rec - bool(no),
simple_neg - bool(no),
follow_vars - bool(no),
% LLDS
optimize - bool(no),
optimize_peep - bool(no),
optimize_jumps - bool(no),
optimize_fulljumps - bool(no),
optimize_labels - bool(no),
optimize_dups - bool(no),
%%% optimize_copyprop - bool(no),
optimize_value_number - bool(no),
optimize_frames - bool(no),
optimize_delay_slot - bool(no),
optimize_repeat - int(0),
optimize_vnrepeat - int(1), % ineffective unless
% value_number is set
pred_value_number - bool(no),
vn_fudge - int(1000),
% LLDS -> C
use_macro_for_redo_fail - bool(no),
emit_c_loops - bool(no),
procs_per_c_function - int(1),
everything_in_one_c_function - special,
c_optimize - bool(no),
inline_alloc - bool(no)
]).
option_defaults_2(link_option, [
% Link Options
output_file_name - string(""),
% if the output_file_name is an empty
% string, we use the name of the first
% module on the command line
link_flags - accumulating([]),
link_library_directories - accumulating([]),
link_libraries - accumulating([]),
link_objects - accumulating([])
]).
option_defaults_2(miscellaneous_option, [
% Miscellaneous Options
heap_space - int(0),
search_directories - accumulating(["."]),
intermod_directories - accumulating([]),
use_search_directories_for_intermod
- bool(yes),
use_subdirs - bool(no),
help - bool(no)
]).
% please keep this in alphabetic order
short_option('c', compile_only).
short_option('C', compile_to_c).
short_option('d', dump_hlds).
short_option('D', verbose_dump_hlds).
short_option('e', errorcheck_only).
short_option('E', verbose_errors).
short_option('G', convert_to_goedel).
short_option('h', help).
short_option('i', make_interface).
short_option('I', search_directories).
short_option('l', link_libraries).
short_option('L', link_library_directories).
short_option('M', generate_dependencies).
short_option('N', debug_modes).
short_option('n', line_numbers).
short_option('o', output_file_name).
short_option('O', opt_level).
short_option('p', profiling).
short_option('P', convert_to_mercury).
short_option('s', grade).
short_option('S', statistics).
short_option('T', debug_types).
short_option('t', typecheck_only).
short_option('v', verbose).
short_option('V', very_verbose).
short_option('w', inhibit_warnings).
short_option('?', help).
% warning options
long_option("inhibit-warnings", inhibit_warnings).
long_option("halt-at-warn", halt_at_warn).
long_option("halt-at-syntax-errors", halt_at_syntax_errors).
long_option("warn-singleton-variables", warn_singleton_vars).
long_option("warn-overlapping-scopes", warn_overlapping_scopes).
long_option("warn-det-decls-too-lax", warn_det_decls_too_lax).
long_option("warn-nothing-exported", warn_nothing_exported).
long_option("warn-unused-args", warn_unused_args).
long_option("warn-interface-imports", warn_interface_imports).
long_option("warn-non-stratification", warn_non_stratification).
long_option("warn-missing-opt-files", warn_missing_opt_files).
long_option("warn-missing-trans-opt-deps", warn_missing_trans_opt_deps).
long_option("warn-simple-code", warn_simple_code).
long_option("warn-duplicate-calls", warn_duplicate_calls).
long_option("warn-missing-module-name", warn_missing_module_name).
long_option("warn-wrong-module-name", warn_wrong_module_name).
% verbosity options
long_option("verbose", verbose).
long_option("very-verbose", very_verbose).
long_option("verbose-error-messages", verbose_errors).
long_option("statistics", statistics).
long_option("debug-types", debug_types).
long_option("debug-modes", debug_modes).
long_option("debug-determinism", debug_det).
long_option("debug-det", debug_det).
long_option("debug-opt", debug_opt).
long_option("debug-vn", debug_vn).
long_option("debug-pd", debug_pd).
% output options (mutually exclusive)
long_option("generate-dependencies", generate_dependencies).
long_option("generate-module-order", generate_module_order).
long_option("make-short-interface", make_short_interface).
long_option("make-short-int", make_short_interface).
long_option("make-interface", make_interface).
long_option("make-int", make_interface).
long_option("make-private-interface", make_private_interface).
long_option("make-priv-int", make_private_interface).
long_option("make-optimization-interface",
make_optimization_interface).
long_option("make-optimisation-interface",
make_optimization_interface).
long_option("make-opt-int", make_optimization_interface).
long_option("make-transitive-optimization-interface",
make_transitive_opt_interface).
long_option("make-transitive-optimisation-interface",
make_transitive_opt_interface).
long_option("make-trans-opt", make_transitive_opt_interface).
long_option("convert-to-mercury", convert_to_mercury).
long_option("convert-to-Mercury", convert_to_mercury).
long_option("pretty-print", convert_to_mercury).
long_option("convert-to-goedel", convert_to_goedel).
long_option("convert-to-Goedel", convert_to_goedel).
long_option("typecheck-only", typecheck_only).
long_option("errorcheck-only", errorcheck_only).
long_option("compile-to-c", compile_to_c).
long_option("compile-to-C", compile_to_c).
long_option("compile-only", compile_only).
% aux output options
long_option("assume-gmake", assume_gmake).
long_option("trace", trace).
long_option("generate-bytecode", generate_bytecode).
long_option("generate-prolog", generate_prolog).
long_option("generate-Prolog", generate_prolog).
long_option("prolog-dialect", prolog_dialect).
long_option("line-numbers", line_numbers).
long_option("auto-comments", auto_comments).
long_option("show-dependency-graph", show_dependency_graph).
long_option("dump-hlds", dump_hlds).
long_option("verbose-dump-hlds", verbose_dump_hlds).
% language semantics options
long_option("reorder-conj", reorder_conj).
long_option("reorder-disj", reorder_disj).
long_option("fully-strict", fully_strict).
long_option("strict-sequential", strict_sequential).
long_option("infer-all", infer_all).
long_option("infer-types", infer_types).
long_option("infer-modes", infer_modes).
long_option("infer-determinism", infer_det).
long_option("infer-det", infer_det).
long_option("type-inference-iteration-limit",
type_inference_iteration_limit).
long_option("mode-inference-iteration-limit",
mode_inference_iteration_limit).
% compilation model options
long_option("grade", grade).
long_option("gcc-non-local-gotos", gcc_non_local_gotos).
long_option("gcc-global-registers", gcc_global_registers).
long_option("asm-labels", asm_labels).
long_option("gc", gc).
long_option("garbage-collection", gc).
long_option("profiling", profiling).
long_option("time-profiling", time_profiling).
long_option("memory-profiling", memory_profiling).
long_option("profile-calls", profile_calls).
long_option("profile-time", profile_time).
long_option("profile-memory", profile_memory).
long_option("debug", debug).
% The following options are not allowed, because they're
% not very useful and would probably only confuse people.
% long_option("stack-trace", stack_trace).
% long_option("require-tracing", require_tracking).
long_option("use-trail", use_trail).
long_option("pic-reg", pic_reg).
long_option("tags", tags).
long_option("num-tag-bits", num_tag_bits).
long_option("bits-per-word", bits_per_word).
long_option("bytes-per-word", bytes_per_word).
long_option("conf-low-tag-bits", conf_low_tag_bits).
long_option("args", args).
long_option("arg-convention", args).
long_option("type-layout", type_layout).
long_option("agc-stack-layout", agc_stack_layout).
long_option("basic-stack-layout", basic_stack_layout).
long_option("procid-stack-layout", procid_stack_layout).
long_option("trace-stack-layout", trace_stack_layout).
long_option("typeinfo-liveness", typeinfo_liveness).
long_option("highlevel-C", highlevel_c).
long_option("highlevel-c", highlevel_c).
long_option("high-level-C", highlevel_c).
long_option("high-level-c", highlevel_c).
long_option("unboxed-float", unboxed_float).
% code generation options
long_option("low-level-debug", low_level_debug).
long_option("polymorphism", polymorphism).
long_option("trad-passes", trad_passes).
long_option("lazy-code", lazy_code).
long_option("reclaim-heap-on-failure", reclaim_heap_on_failure).
long_option("reclaim-heap-on-semidet-failure",
reclaim_heap_on_semidet_failure).
long_option("reclaim-heap-on-nondet-failure",
reclaim_heap_on_nondet_failure).
long_option("branch-delay-slot", have_delay_slot).
long_option("have-delay-slot", have_delay_slot).
long_option("num-real-r-regs", num_real_r_regs).
long_option("num-real-f-regs", num_real_f_regs).
long_option("num-real-r-temps", num_real_r_temps).
long_option("num-real-f-temps", num_real_f_temps).
long_option("num-real-temps", num_real_r_temps). % obsolete
long_option("cc", cc).
long_option("cflags", cflags).
long_option("cflags-for-regs", cflags_for_regs).
long_option("cflags-for-gotos", cflags_for_gotos).
long_option("c-debug", c_debug).
long_option("c-include-directory", c_include_directory).
long_option("fact-table-max-array-size",fact_table_max_array_size).
long_option("fact-table-hash-percent-full",
fact_table_hash_percent_full).
% optimization options
long_option("opt-level", opt_level).
long_option("optimization-level", opt_level).
long_option("optimisation-level", opt_level).
long_option("opt-space", opt_space).
long_option("optimize-space", opt_space).
long_option("optimise-space", opt_space).
long_option("intermodule-optimization", intermodule_optimization).
long_option("intermodule-optimisation", intermodule_optimization).
long_option("transitive-intermodule-optimization",
transitive_optimization).
long_option("transitive-intermodule-optimisation",
transitive_optimization).
long_option("trans-intermod-opt", transitive_optimization).
% HLDS->HLDS optimizations
long_option("inlining", inlining).
long_option("inline-simple", inline_simple).
long_option("inline-single-use", inline_single_use).
long_option("inline-compound-threshold", inline_compound_threshold).
long_option("inline-simple-threshold", inline_simple_threshold).
long_option("intermod-inline-simple-threshold",
intermod_inline_simple_threshold).
long_option("inline-vars-threshold", inline_vars_threshold).
long_option("common-struct", common_struct).
long_option("common-goal", common_goal).
long_option("excess-assign", excess_assign).
long_option("optimize-duplicate-calls", optimize_duplicate_calls).
long_option("optimise-duplicate-calls", optimize_duplicate_calls).
long_option("optimise-constant-propagation", constant_propagation).
long_option("optimize-constant-propagation", constant_propagation).
long_option("optimize-saved-vars", optimize_saved_vars).
long_option("optimise-saved-vars", optimize_saved_vars).
long_option("prev-code", prev_code).
long_option("follow-code", follow_code).
long_option("constraint-propagation", constraint_propagation).
long_option("optimize-unused-args", optimize_unused_args).
long_option("optimise-unused-args", optimize_unused_args).
long_option("intermod-unused-args", intermod_unused_args).
long_option("optimize-higher-order", optimize_higher_order).
long_option("optimise-higher-order", optimize_higher_order).
long_option("optimise-constructor-last-call", optimize_constructor_last_call).
long_option("optimize-constructor-last-call", optimize_constructor_last_call).
long_option("optimize-dead-procs", optimize_dead_procs).
long_option("optimise-dead-procs", optimize_dead_procs).
long_option("deforestation", deforestation).
long_option("deforestation-depth-limit", deforestation_depth_limit).
long_option("deforestation-cost-factor", deforestation_cost_factor).
long_option("deforestation-vars-threshold", deforestation_vars_threshold).
long_option("enable-termination", termination).
long_option("enable-term", termination).
long_option("check-termination", check_termination).
long_option("check-term", check_termination).
long_option("chk-term", check_termination).
long_option("verbose-check-termination",verbose_check_termination).
long_option("verb-check-term", verbose_check_termination).
long_option("verb-chk-term", verbose_check_termination).
long_option("termination-single-argument-analysis",
termination_single_args).
long_option("term-single-arg", termination_single_args).
long_option("termination-norm", termination_norm).
long_option("term-norm", termination_norm).
long_option("termination-error-limit", termination_error_limit).
long_option("term-err-limit", termination_error_limit).
long_option("termination-path-limit", termination_path_limit).
long_option("term-path-limit", termination_path_limit).
% HLDS->LLDS optimizations
long_option("smart-indexing", smart_indexing).
long_option("dense-switch-req-density", dense_switch_req_density).
long_option("lookup-switch-req-density",lookup_switch_req_density).
long_option("dense-switch-size", dense_switch_size).
long_option("lookup-switch-size", lookup_switch_size).
long_option("string-switch-size", string_switch_size).
long_option("tag-switch-size", tag_switch_size).
long_option("try-switch-size", try_switch_size).
long_option("binary-switch-size", binary_switch_size).
long_option("static-ground-terms", static_ground_terms).
long_option("middle-rec", middle_rec).
long_option("simple_neg", simple_neg).
long_option("follow-vars", follow_vars).
% LLDS optimizations
long_option("llds-optimize", optimize).
long_option("llds-optimise", optimize).
long_option("optimize-peep", optimize_peep).
long_option("optimise-peep", optimize_peep).
long_option("optimize-jumps", optimize_jumps).
long_option("optimise-jumps", optimize_jumps).
long_option("optimize-fulljumps", optimize_fulljumps).
long_option("optimise-fulljumps", optimize_fulljumps).
long_option("optimize-labels", optimize_labels).
long_option("optimise-labels", optimize_labels).
long_option("optimize-dups", optimize_dups).
long_option("optimise-dups", optimize_dups).
%%% long_option("optimize-copyprop", optimize_copyprop).
%%% long_option("optimise-copyprop", optimize_copyprop).
long_option("optimize-value-number", optimize_value_number).
long_option("optimise-value-number", optimize_value_number).
long_option("optimize-frames", optimize_frames).
long_option("optimise-frames", optimize_frames).
long_option("optimize-delay-slot", optimize_delay_slot).
long_option("optimise-delay-slot", optimize_delay_slot).
long_option("optimize-repeat", optimize_repeat).
long_option("optimise-repeat", optimize_repeat).
long_option("optimize-vnrepeat", optimize_vnrepeat).
long_option("optimise-vnrepeat", optimize_vnrepeat).
long_option("pred-value-number", pred_value_number).
long_option("vn-fudge", vn_fudge).
% LLDS->C optimizations
long_option("use-macro-for-redo-fail", use_macro_for_redo_fail).
long_option("emit-c-loops", emit_c_loops).
long_option("procs-per-c-function", procs_per_c_function).
long_option("procs-per-C-function", procs_per_c_function).
long_option("everything-in-one-c-function", everything_in_one_c_function).
long_option("everything-in-one-C-function", everything_in_one_c_function).
long_option("split-c-files", split_c_files).
long_option("split-C-files", split_c_files).
long_option("c-optimise", c_optimize).
long_option("c-optimize", c_optimize).
long_option("inline-alloc", inline_alloc).
% link options
long_option("output-file", output_file_name).
long_option("link-flags", link_flags).
long_option("library-directory", link_library_directories).
long_option("library", link_libraries).
long_option("link-object", link_objects).
% misc options
long_option("help", help).
long_option("heap-space", heap_space).
long_option("search-directory", search_directories).
long_option("intermod-directory", intermod_directories).
long_option("use-search-directories-for-intermod",
use_search_directories_for_intermod).
long_option("use-subdirs", use_subdirs).
%-----------------------------------------------------------------------------%
special_handler(grade, string(Grade), OptionTable0, Result) :-
( convert_grade_option(Grade, OptionTable0, OptionTable) ->
Result = ok(OptionTable)
;
string__append_list(["invalid grade `", Grade, "'"], Msg),
Result = error(Msg)
).
special_handler(profiling, bool(Value), OptionTable0, ok(OptionTable)) :-
map__set(OptionTable0, profile_time, bool(Value), OptionTable1),
map__set(OptionTable1, profile_calls, bool(Value), OptionTable2),
map__set(OptionTable2, profile_memory, bool(no), OptionTable).
special_handler(time_profiling, none, OptionTable0, ok(OptionTable)) :-
map__set(OptionTable0, profile_time, bool(yes), OptionTable1),
map__set(OptionTable1, profile_calls, bool(yes), OptionTable2),
map__set(OptionTable2, profile_memory, bool(no), OptionTable).
special_handler(memory_profiling, none, OptionTable0, ok(OptionTable)) :-
map__set(OptionTable0, profile_time, bool(no), OptionTable1),
map__set(OptionTable1, profile_calls, bool(yes), OptionTable2),
map__set(OptionTable2, profile_memory, bool(yes), OptionTable).
special_handler(inlining, bool(Value), OptionTable0, ok(OptionTable)) :-
map__set(OptionTable0, inline_simple, bool(Value), OptionTable1),
map__set(OptionTable1, inline_single_use, bool(Value), OptionTable2),
(
Value = yes,
map__set(OptionTable2, inline_compound_threshold,
int(10), OptionTable)
;
Value = no,
map__set(OptionTable2, inline_compound_threshold,
int(0), OptionTable)
).
special_handler(everything_in_one_c_function, none, OptionTable0,
ok(OptionTable)) :-
map__set(OptionTable0, procs_per_c_function, int(0),
OptionTable).
special_handler(reclaim_heap_on_failure, bool(Value), OptionTable0,
ok(OptionTable)) :-
map__set(OptionTable0, reclaim_heap_on_semidet_failure, bool(Value),
OptionTable1),
map__set(OptionTable1, reclaim_heap_on_nondet_failure, bool(Value),
OptionTable).
special_handler(strict_sequential, none, OptionTable0, ok(OptionTable)) :-
override_options([
reorder_conj - bool(no),
reorder_disj - bool(no),
fully_strict - bool(yes)
], OptionTable0, OptionTable).
special_handler(inhibit_warnings, bool(Inhibit), OptionTable0, ok(OptionTable))
:-
bool__not(Inhibit, Enable),
override_options([
warn_singleton_vars - bool(Enable),
warn_overlapping_scopes - bool(Enable),
warn_det_decls_too_lax - bool(Enable),
warn_nothing_exported - bool(Enable),
warn_interface_imports - bool(Enable),
warn_missing_opt_files - bool(Enable),
warn_missing_trans_opt_deps - bool(Enable),
warn_simple_code - bool(Enable),
warn_missing_module_name - bool(Enable),
warn_wrong_module_name - bool(Enable)
], OptionTable0, OptionTable).
special_handler(infer_all, bool(Infer), OptionTable0, ok(OptionTable)) :-
override_options([
infer_types - bool(Infer),
infer_modes - bool(Infer),
infer_det - bool(Infer)
], OptionTable0, OptionTable).
special_handler(opt_space, none, OptionTable0, ok(OptionTable)) :-
opt_space(OptionSettingsList),
override_options(OptionSettingsList, OptionTable0, OptionTable).
special_handler(opt_level, int(N0), OptionTable0, ok(OptionTable)) :-
( N0 > 6 ->
N = 6
; N0 < -1 ->
N = -1
;
N = N0
),
set_opt_level(N, OptionTable0, OptionTable).
:- pred set_opt_level(int, option_table, option_table).
:- mode set_opt_level(in, in, out) is det.
set_opt_level(N, OptionTable0, OptionTable) :-
%
% first reset all optimizations to their default
% (the default should be all optimizations off)
%
option_defaults_2(optimization_option, OptimizationDefaults),
override_options(OptimizationDefaults, OptionTable0, OptionTable1),
%
% next enable the optimization levels from 0 up to N.
%
enable_opt_levels(0, N, OptionTable1, OptionTable).
:- pred enable_opt_levels(int, int, option_table, option_table).
:- mode enable_opt_levels(in, in, in, out) is det.
enable_opt_levels(N0, N, OptionTable0, OptionTable) :-
( N0 > N ->
OptionTable = OptionTable0
; opt_level(N0, OptionTable0, OptionSettingsList) ->
override_options(OptionSettingsList, OptionTable0,
OptionTable1),
N1 is N0 + 1,
enable_opt_levels(N1, N, OptionTable1, OptionTable)
;
error("Unknown optimization level")
).
:- pred override_options(list(pair(option, option_data)),
option_table, option_table).
:- mode override_options(in, in, out) is det.
override_options([], OptionTable, OptionTable).
override_options([Option - Value | Settings], OptionTable0, OptionTable) :-
map__set(OptionTable0, Option, Value, OptionTable1),
override_options(Settings, OptionTable1, OptionTable).
%-----------------------------------------------------------------------------%
:- pred opt_space(list(pair(option, option_data))::out) is det.
opt_space([
optimize_dead_procs - bool(yes),
optimize_labels - bool(yes),
optimize_dups - bool(yes),
optimize_fulljumps - bool(no),
inline_alloc - bool(no),
use_macro_for_redo_fail - bool(no)
]).
%-----------------------------------------------------------------------------%
:- pred opt_level(int::in, option_table::in,
list(pair(option, option_data))::out) is semidet.
% Optimization level -1:
% Generate totally unoptimized code; turns off ALL optimizations that
% can be turned off, including HLDS->HLDS, HLDS->LLDS, LLDS->LLDS, LLDS->C,
% and C->object optimizations.
% (However, there are some optimizations that can't be disabled.)
% Optimization level 0: aim to minimize overall compilation time.
% XXX I just guessed. We should run lots of experiments.
opt_level(0, _, [
optimize - bool(yes),
optimize_repeat - int(1),
optimize_peep - bool(yes),
static_ground_terms - bool(yes),
smart_indexing - bool(yes),
optimize_jumps - bool(yes),
optimize_labels - bool(yes),
excess_assign - bool(yes) % ???
]).
% Optimization level 1: apply optimizations which are cheap and
% have a good payoff while still keeping compilation time small
opt_level(1, OptionTable, [
c_optimize - bool(yes), % XXX we want `gcc -O1'
optimize_frames - bool(yes),
optimize_delay_slot - bool(DelaySlot),
follow_vars - bool(yes),
middle_rec - bool(yes),
emit_c_loops - bool(yes)
% dups?
]) :-
getopt__lookup_bool_option(OptionTable, have_delay_slot, DelaySlot).
% Optimization level 2: apply optimizations which have a good
% payoff relative to their cost; but include optimizations
% which are more costly than with -O1
opt_level(2, _, [
optimize_fulljumps - bool(yes),
optimize_repeat - int(3),
optimize_dups - bool(yes),
optimize_dead_procs - bool(yes),
follow_code - bool(yes),
inline_simple - bool(yes),
inline_single_use - bool(yes),
inline_compound_threshold - int(10),
common_struct - bool(yes),
optimize_duplicate_calls - bool(yes),
simple_neg - bool(yes)
]).
% Optimization level 3: apply optimizations which usually have a good
% payoff even if they increase compilation time quite a bit
opt_level(3, _, [
%%% optimize_copyprop - bool(yes),
optimize_saved_vars - bool(yes),
optimize_unused_args - bool(yes),
optimize_higher_order - bool(yes),
deforestation - bool(no), % buggy
constant_propagation - bool(yes),
optimize_repeat - int(4)
]).
% Optimization level 4: apply optimizations which may have some
% payoff even if they increase compilation time quite a bit
% Currently this enables value_number
% and increases the inlining thresholds
opt_level(4, _, [
optimize_value_number - bool(yes),
inline_simple_threshold - int(8),
inline_compound_threshold - int(20)
]).
% Optimization level 5: apply optimizations which may have some
% payoff even if they increase compilation time a lot
% Currently this enables pred_value_number
% and runs a second pass of value numbering
opt_level(5, _, [
pred_value_number - bool(yes),
optimize_repeat - int(5),
optimize_vnrepeat - int(2),
inline_compound_threshold - int(100)
]).
% Optimization level 6: apply optimizations which may have any
% payoff even if they increase compilation time to completely
% unreasonable levels
% Currently this sets `everything_in_one_c_function', which causes
% the compiler to put everything in the one C function and treat
% calls to predicates in the same module as local.
% We also enable inlining of GC_malloc(), redo(), and fail().
opt_level(6, _, [
procs_per_c_function - int(0), % everything in one C function
inline_alloc - bool(yes),
use_macro_for_redo_fail - bool(yes)
]).
%-----------------------------------------------------------------------------%
options_help -->
io__write_string("\t-?, -h, --help\n"),
io__write_string("\t\tPrint this usage message.\n"),
options_help_warning,
options_help_verbosity,
options_help_output,
options_help_aux_output,
options_help_semantics,
options_help_termination,
options_help_compilation_model,
options_help_code_generation,
options_help_optimization,
options_help_hlds_hlds_optimization,
options_help_hlds_llds_optimization,
options_help_llds_llds_optimization,
options_help_output_optimization,
options_help_object_optimization,
options_help_link,
options_help_misc.
:- pred options_help_warning(io__state::di, io__state::uo) is det.
options_help_warning -->
io__write_string("\nWarning Options:\n"),
io__write_string("\t-w, --inhibit-warnings\n"),
io__write_string("\t\tDisable all warning messages.\n"),
io__write_string("\t--halt-at-warn\n"),
io__write_string("\t\tThis option causes the compiler to treat all \n"),
io__write_string("\t\twarnings as if they were errors. This means that\n"),
io__write_string("\t\tif any warning is issued, the compiler will not\n"),
io__write_string("\t\tgenerate code --- instead, it will return a\n"),
io__write_string("\t\tnon-zero exit status.\n"),
io__write_string("\t--halt-at-syntax-errors\n"),
io__write_string("\t\tThis option causes the compiler to halt immediately\n"),
io__write_string("\t\tafter syntax checking and not do any semantic checking\n"),
io__write_string("\t\tif it finds any syntax errors in the program.\n"),
io__write_string("\t--no-warn-singleton-variables\n"),
io__write_string("\t\tDon't warn about variables which only occur once.\n"),
io__write_string("\t--no-warn-overlapping-scopes\n"),
io__write_string("\t\tDon't warn about variables which occur in overlapping scopes.\n"),
io__write_string("\t--no-warn-det-decls-too-lax\n"),
io__write_string("\t\tDon't warn about determinism declarations\n"),
io__write_string("\t\twhich could have been stricter.\n"),
io__write_string("\t--no-warn-nothing-exported\n"),
io__write_string("\t\tDon't warn about modules which export nothing.\n"),
io__write_string("\t--warn-unused-args\n"),
io__write_string("\t\tWarn about predicate arguments which are not used.\n"),
io__write_string("\t--warn-interface-imports\n"),
io__write_string("\t\tWarn about modules imported in the interface, but\n"),
io__write_string("\t\twhich are not used in the interface.\n"),
io__write_string("\t--no-warn-missing-opt-files\n"),
io__write_string("\t\tDisable warnings about `.opt' files which cannot be opened.\n"),
io__write_string("\t--no-warn-missing-trans-opt-deps\n"),
io__write_string("\t\tDisable warnings produced when the information required\n"),
io__write_string("\t\tto allow `.trans_opt' files to be read when creating other\n"),
io__write_string("\t\t`.trans_opt' files has been lost. The information can be\n"),
io__write_string("\t\trecreated by running `mmake <mainmodule>.depend'\n"),
io__write_string("\t--warn-non-stratification\n"),
io__write_string("\t\tWarn about possible non-stratification in the module.\n"),
io__write_string("\t\tNon-stratification occurs when a predicate/function can call\n"),
io__write_string("\t\titself negatively through some path along its call graph.\n"),
io__write_string("\t--no-warn-simple-code\n"),
io__write_string("\t\tDisable warnings about constructs which are so\n"),
io__write_string("\t\tsimple that they are likely to be programming errors.\n"),
io__write_string("\t--warn-duplicate-calls\n"),
io__write_string("\t\tWarn about multiple calls to a predicate with the\n"),
io__write_string("\t\tsame input arguments.\n"),
io__write_string("\t--no-warn-missing-module-name\n"),
io__write_string("\t\tDisable warnings for modules that do no start with\n"),
io__write_string("\t\ta `:- module' declaration.\n"),
io__write_string("\t--no-warn-wrong-module-name\n"),
io__write_string("\t\tDisable warnings for modules whose `:- module'\n"),
io__write_string("\t\tdeclaration does not match the module's file name.\n").
:- pred options_help_verbosity(io__state::di, io__state::uo) is det.
options_help_verbosity -->
io__write_string("\nVerbosity Options:\n"),
io__write_string("\t-v, --verbose\n"),
io__write_string("\t\tOutput progress messages at each stage in the compilation.\n"),
io__write_string("\t-V, --very_verbose\n"),
io__write_string("\t\tOutput very verbose progress messages.\n"),
io__write_string("\t-E, --verbose-error-messages\n"),
io__write_string("\t\tExplain error messages. Asks the compiler to give you a more\n"),
io__write_string("\t\tdetailed explanation of any errors it finds in your program.\n"),
io__write_string("\t-S, --statistics\n"),
io__write_string("\t\tOutput messages about the compiler's time/space usage.\n"),
io__write_string("\t\tAt the moment this option implies `--no-trad-passes', so you get\n"),
io__write_string("\t\tinformation at the boundaries between phases of the compiler.\n"),
io__write_string("\t-T, --debug-types\n"),
io__write_string("\t\tOutput detailed debugging traces of the type checking.\n"),
io__write_string("\t-N, --debug-modes\n"),
io__write_string("\t\tOutput detailed debugging traces of the mode checking.\n"),
io__write_string("\t--debug-det, --debug-determinism\n"),
io__write_string("\t\tOutput detailed debugging traces of determinism analysis.\n"),
io__write_string("\t--debug-opt\n"),
io__write_string("\t\tOutput detailed debugging traces of the optimization process.\n"),
io__write_string("\t--debug-vn <n>\n"),
io__write_string("\t\tOutput detailed debugging traces of the value numbering\n"),
io__write_string("\t\toptimization pass. The different bits in the number\n"),
io__write_string("\t\targument of this option control the printing of\n"),
io__write_string("\t\tdifferent types of tracing messages.\n"),
io__write_string("\t--debug-pd\n"),
io__write_string("\t\tOutput detailed debugging traces of the partial\n"),
io__write_string("\t\tdeduction and deforestation process.\n").
:- pred options_help_output(io__state::di, io__state::uo) is det.
options_help_output -->
io__write_string("\nOutput Options:\n"),
io__write_string("\tThese options are mutually exclusive.\n"),
io__write_string("\tOnly the first one specified will apply.\n"),
io__write_string("\tIf none of these options are specified, the default action\n"),
io__write_string("\tis to link the named modules to produce an executable.\n\n"),
io__write_string("\t-M, --generate-dependencies\n"),
io__write_string("\t\tOutput `Make'-style dependencies for the module\n"),
io__write_string("\t\tand all of its dependencies to `<module>.dep'.\n"),
io__write_string("\t--generate-module-order\n"),
io__write_string("\t\tOutput the strongly connected components of the module\n"),
io__write_string("\t\tdependency graph in top-down order to `<module>.order'.\n"),
io__write_string("\t\tImplies --generate-dependencies.\n"),
io__write_string("\t-i, --make-int, --make-interface\n"),
io__write_string("\t\tWrite the module interface to `<module>.int',\n"),
io__write_string("\t\tand write the short interface to `<module>.int2'\n"),
io__write_string("\t\tThis option should only be used by mmake.\n"),
io__write_string("\t--make-priv-int, --make-private-interface\n"),
io__write_string("\t\tWrite the private interface to `<module>.int0'.\n"),
io__write_string("\t\tThis option should only be used by mmake.\n"),
io__write_string("\t--make-short-int, --make-short-interface\n"),
io__write_string("\t\tWrite the unqualified short interface to `<module>.int3'.\n"),
io__write_string("\t\tThis option should only be used by mmake.\n"),
io__write_string("\t--make-opt-int, --make-optimization-interface\n"),
io__write_string("\t\tWrite inter-module optimization information to\n"),
io__write_string("\t\t`<module>.opt'.\n"),
io__write_string("\t\tThis option should only be used by mmake.\n"),
io__write_string("\t--make-trans-opt\n"),
io__write_string("\t--make-transitive-optimization-interface\n"),
io__write_string("\t\tOutput transitive optimization information\n"),
io__write_string("\t\tinto the `<module>.trans_opt' file.\n"),
io__write_string("\t\tThis option should only be used by mmake.\n"),
io__write_string("\t-G, --convert-to-goedel\n"),
io__write_string("\t\tConvert to Goedel. Output to file `<module>.loc'.\n"),
io__write_string("\t\tNote that some Mercury language constructs cannot\n"),
io__write_string("\t\t(easily) be translated into Goedel.\n"),
io__write_string("\t-P, --convert-to-mercury\n"),
io__write_string("\t\tConvert to Mercury. Output to file `<module>.ugly'\n"),
io__write_string("\t\tThis option acts as a Mercury ugly-printer.\n"),
io__write_string("\t-t, --typecheck-only\n"),
io__write_string("\t\tJust check that the code is syntactically correct and\n"),
io__write_string("\t\ttype-correct. Don't check modes or determinism,\n"),
io__write_string("\t\tand don't generate any code.\n"),
io__write_string("\t-e, --errorcheck-only\n"),
io__write_string("\t\tCheck the module for errors, but do not generate any code.\n"),
io__write_string("\t-C, --compile-to-c\n"),
io__write_string("\t\tGenerate C code in `<module>.c', but not object code.\n"),
io__write_string("\t-c, --compile-only\n"),
io__write_string("\t\tGenerate C code in `<module>.c' and object code in `<module>.o'\n"),
io__write_string("\t\tbut do not attempt to link the named modules.\n").
:- pred options_help_aux_output(io__state::di, io__state::uo) is det.
options_help_aux_output -->
io__write_string("\n Auxiliary Output Options:\n"),
io__write_string("\t--no-assume-gmake\n"),
io__write_string("\t\tWhen generating `.dep' files, generate Makefile\n"),
io__write_string("\t\tfragments that use only the features of standard make;\n"),
io__write_string("\t\tdo not assume the availability of GNU Make extensions.\n"),
io__write_string("\t--trace {minimum, interfaces, all, default}\n"),
io__write_string("\t\tGenerate code that includes the specified level\n"),
io__write_string("\t\tof execution tracing.\n"),
io__write_string("\t\tSee the [XXX not yet written!] chapter of the\n"),
io__write_string("\t\tMercury User's Guide for details.\n"),
io__write_string("\t--generate-bytecode\n"),
io__write_string("\t\tOutput a bytecode form of the module for use\n"),
io__write_string("\t\tby an experimental debugger.\n"),
io__write_string("\t--generate-prolog\n"),
io__write_string("\t\tConvert the program to Prolog. Output to file `<module>.pl'\n"),
io__write_string("\t\tor `<module>.nl' (depending on the dialect).\n"),
io__write_string("\t--prolog-dialect {sicstus,nu}\n"),
io__write_string("\t\tTarget the named dialect if generating Prolog code.\n"),
io__write_string("\t-l, --line-numbers\n"),
io__write_string("\t\tOutput line numbers in the generated code.\n"),
io__write_string("\t\tOnly works with the `-G' and `-P' options.\n"),
io__write_string("\t--auto-comments\n"),
io__write_string("\t\tOutput comments in the `<module>.c' file.\n"),
io__write_string("\t\t(The code may be easier to understand if you also\n"),
io__write_string("\t\tuse the `--no-llds-optimize' option.)\n"),
io__write_string("\t--show-dependency-graph\n"),
io__write_string("\t\tWrite out the dependency graph to `<module>.dependency_graph'.\n"),
io__write_string("\t-d <n>, --dump-hlds <stage number or name>\n"),
io__write_string("\t\tDump the HLDS (intermediate representation) after\n"),
io__write_string("\t\tthe specified stage to `<module>.hlds_dump.<num>-<name>'.\n"),
io__write_string("\t\tStage numbers range from 1-99.\n"),
io__write_string("\t\tMultiple dump options accumulate.\n"),
io__write_string("\t-D, --verbose-dump-hlds <fields>\n"),
io__write_string("\t\tWith `--dump-hlds', include extra detail in the dump.\n"),
io__write_string("\t\tEach type of detail is included in the dump if its\n"),
io__write_string("\t\tcorresponding letter occurs in the option argument\n"),
io__write_string("\t\t(see the Mercury User's Guide for details).\n").
:- pred options_help_semantics(io__state::di, io__state::uo) is det.
options_help_semantics -->
io__write_string("\nLanguage semantics options:\n"),
io__write_string("(See the Mercury language reference manual for detailed explanations.)\n"),
io__write_string("\t--no-reorder-conj\n"),
io__write_string("\t\tExecute conjunctions left-to-right except where the modes imply\n"),
io__write_string("\t\tthat reordering is unavoidable.\n"),
io__write_string("\t--no-reorder-disj\n"),
io__write_string("\t\tExecute disjunctions strictly left-to-right.\n"),
io__write_string("\t--fully-strict\n"),
io__write_string("\t\tDon't optimize away loops or calls to error/1.\n"),
io__write_string("\t--infer-types\n"),
io__write_string("\t\tIf there is no type declaration for a predicate or function,\n"),
io__write_string("\t\ttry to infer the type, rather than just reporting an error.\n"),
io__write_string("\t--infer-modes\n"),
io__write_string("\t\tIf there is no mode declaration for a predicate,\n"),
io__write_string("\t\ttry to infer the modes, rather than just reporting an error.\n"),
io__write_string("\t--no-infer-det, --no-infer-determinism\n"),
io__write_string("\t\tIf there is no determinism declaration for a procedure,\n"),
io__write_string("\t\tdon't try to infer the determinism, just report an error.\n"),
io__write_string("\t--type-inference-iteration-limit <n>\n"),
io__write_string("\t\tPerform at most <n> passes of type inference (default: 60).\n"),
io__write_string("\t--mode-inference-iteration-limit <n>\n"),
io__write_string("\t\tPerform at most <n> passes of mode inference (default: 30).\n").
:- pred options_help_termination(io__state::di, io__state::uo) is det.
options_help_termination -->
io__write_string("\nTermination Analysis Options:\n"),
io__write_string("\t--enable-term, --enable-termination\n"),
io__write_string("\t\tAnalyse each predicate to discover if it terminates.\n"),
io__write_string("\t--chk-term, --check-term, --check-termination\n"),
io__write_string("\t\tEnable termination analysis, and emit warnings for some\n"),
io__write_string("\t\tpredicates or functions that cannot be proved to terminate. In\n"),
io__write_string("\t\tmany cases where the compiler is unable to prove termination\n"),
io__write_string("\t\tthe problem is either a lack of information about the\n"),
io__write_string("\t\ttermination properties of other predicates, or because language\n"),
io__write_string("\t\tconstructs (such as higher order calls) were used which could\n"),
io__write_string("\t\tnot be analysed. In these cases the compiler does not emit a\n"),
io__write_string("\t\twarning of non-termination, as it is likely to be spurious.\n"),
io__write_string("\t--verb-chk-term, --verb-check-term, --verbose-check-termination\n"),
io__write_string("\t\tEnable termination analysis, and emit warnings for all\n"),
io__write_string("\t\tpredicates or functions that cannot be proved to terminate.\n"),
io__write_string("\t--term-single-arg <n>, --termination-single-argument-analysis <n>\n"),
io__write_string("\t\tWhen performing termination analysis, try analyzing\n"),
io__write_string("\t\trecursion on single arguments in strongly connected\n"),
io__write_string("\t\tcomponents of the call graph that have up to <n> procedures.\n"),
io__write_string("\t\tSetting this limit to zero disables single argument analysis.\n"),
io__write_string("\t--termination-norm {simple, total, num-data-elems}\n"),
io__write_string("\t\tThe norm defines how termination analysis measures the size\n"),
io__write_string("\t\tof a memory cell. The `simple' norm says that size is always\n"),
io__write_string("\t\tone. The `total' norm says that it is the number of words\n"),
io__write_string("\t\tin the cell. The `num-data-elems' norm says that it is the\n"),
io__write_string("\t\tnumber of words in the cell that contain something other\n"),
io__write_string("\t\tthan pointers to cells of the same type.\n"),
io__write_string("\t--term-err-limit <n>, --termination-error-limit <n>\n"),
io__write_string("\t\tPrint at most <n> reasons for any single termination error\n"),
io__write_string("\t\t(default: 3).\n"),
io__write_string("\t--term-path-limit <n>, --termination-path-limit <n>\n"),
io__write_string("\t\tPerform termination analysis only on predicates\n"),
io__write_string("\t\twith at most <n> paths (default: 256).\n").
:- pred options_help_compilation_model(io__state::di, io__state::uo) is det.
options_help_compilation_model -->
io__write_string("\nCompilation model options:\n"),
io__write_string("\tThe following compilation options affect the generated\n"),
io__write_string("\tcode in such a way that the entire program must be\n"),
io__write_string("\tcompiled with the same setting of these options,\n"),
io__write_string("\tand it must be linked to a version of the Mercury\n"),
io__write_string("\tlibrary which has been compiled with the same setting.\n"),
io__write_string("\t-s <grade>, --grade <grade>\n"),
io__write_string("\t\tSelect the compilation model. The <grade> should be one of\n"),
io__write_string("\t\t`none', `reg', `jump', `asm_jump', `fast', `asm_fast',\n"),
io__write_string("\t\tor one of those with `.gc', `.prof', `.proftime',\n"),
io__write_string("\t\t`.profcalls', `.tr', `.sa', `.debug', and/or `.pic_reg'\n"),
io__write_string("\t\tappended (in that order).\n"),
io__write_string("\t\tDepending on your particular installation, only a subset\n"),
io__write_string("\t\tof these possible grades will have been installed.\n"),
io__write_string("\t\tAttempting to use a grade which has not been installed\n"),
io__write_string("\t\twill result in an error at link time.\n"),
io__write_string("\t--gcc-global-registers\t"),
io__write_string("\t(grades: reg, fast, asm_fast)\n"),
io__write_string("\t--no-gcc-global-registers"),
io__write_string("\t(grades: none, jump, asm_jump)\n"),
io__write_string("\t\tSpecify whether or not to use GNU C's\n"),
io__write_string("\t\tglobal register variables extension.\n"),
io__write_string("\t--gcc-non-local-gotos\t"),
io__write_string("\t(grades: jump, fast, asm_jump, asm_fast)\n"),
io__write_string("\t--no-gcc-non-local-gotos"),
io__write_string("\t(grades: none, reg)\n"),
io__write_string("\t\tSpecify whether or not to use GNU C's\n"),
io__write_string("\t\t""labels as values"" extension.\n"),
io__write_string("\t--asm-labels\t\t"),
io__write_string("\t(grades: asm_jump, asm_fast)\n"),
io__write_string("\t--no-asm-labels\t\t"),
io__write_string("\t(grades: none, reg, jump, fast)\n"),
io__write_string("\t\tSpecify whether or not to use GNU C's\n"),
io__write_string("\t\tasm extensions for inline assembler labels.\n"),
io__write_string("\t--gc {none, conservative, accurate}\n"),
io__write_string("\t--garbage-collection {none, conservative, accurate}\n"),
io__write_string("\t\t\t\t\t(`.gc' grades use `--gc conservative',\n"),
io__write_string("\t\t\t\t\tother grades use `--gc none'.)\n"),
io__write_string("\t\tSpecify which method of garbage collection to use\n"),
io__write_string("\t\t(default: conservative). `accurate' GC is not yet implemented.\n"),
io__write_string("\t--use-trail\t\t"),
io__write_string("\t(grade modifier: `.tr')\n"),
io__write_string("\t\tEnable use of a trail.\n"),
io__write_string("\t\tThis is necessary for interfacing with constraint solvers,\n"),
io__write_string("\t\tor for backtrackable destructive update.\n"),
io__write_string("\t-p, --profiling, --time-profiling\n"),
io__write_string("\t\t\t\t\t(grade modifier: `.prof')\n"),
io__write_string("\t\tEnable time and call profiling. Insert profiling hooks in the\n"),
io__write_string("\t\tgenerated code, and also output some profiling\n"),
io__write_string("\t\tinformation (the static call graph) to the file\n"),
io__write_string("\t\t`<module>.prof'.\n"),
io__write_string("\t--memory-profiling\t"),
io__write_string("\t(grade modifier: `.memprof')\n"),
io__write_string("\t\tEnable memory and call profiling.\n"),
/*****************
XXX The following options are not documented,
because they are currently not useful.
The idea was for you to be able to use --profile-calls
and --profile-time seperately, but that doesn't work
because compiling with --profile-time instead of
--profile-calls results in different code addresses,
so you can't combine the data from versions of
your program compiled with different options.
io__write_string("\t--profile-calls\t\t"),
io__write_string("\t(grade modifier: `.profcalls')\n"),
io__write_string("\t\tSimilar to `--profiling', except that only gathers\n"),
io__write_string("\t\tcall counts, not timing information.\n"),
io__write_string("\t\tUseful on systems where time profiling is not supported,\n"),
io__write_string("\t\tbut not as useful as `--memory-profiling'.\n"),
io__write_string("\t--profile-time\t\t"),
io__write_string("\t(grade modifier: `.proftime')\n"),
io__write_string("\t\tSimilar to `--profiling', except that it only gathers\n"),
io__write_string("\t\ttiming information, not call counts.\n"),
io__write_string("\t--profile-memory\t\t"),
io__write_string("\t(grade modifier: `.profmem')\n"),
io__write_string("\t\tSimilar to `--memory-profiling', except that it only gathers\n"),
io__write_string("\t\tmemory usage information, not call counts.\n"),
********************/
io__write_string("\t--debug\t\t\t"),
io__write_string("\t(grade modifier: `.debug')\n"),
io__write_string("\t\tEnable Mercury-level debugging.\n"),
io__write_string("\t\tSee the [XXX not yet written!] chapter of the\n"),
io__write_string("\t\tMercury User's Guide for details.\n"),
io__write_string("\t--pic-reg\t\t"),
io__write_string("\t(grade modifier: `.pic_reg')\n"),
io__write_string("\t[For Unix with intel x86 architecture only]\n"),
io__write_string("\t\tSelect a register usage convention that is compatible,\n"),
io__write_string("\t\twith position-independent code (gcc's `-fpic' option).\n"),
io__write_string("\t\tThis is necessary when using shared libraries on Intel x86\n"),
io__write_string("\t\tsystems running Unix. On other systems it has no effect.\n"),
io__write_string("\t--tags {none, low, high}"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tSpecify whether to use the low bits or the high bits of \n"),
io__write_string("\t\teach word as tag bits (default: low).\n"),
% io__write_string("\t\t`--tags none' implies `--num-tag-bits 0'.\n"),
io__write_string("\t--num-tag-bits <n>\t"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tUse <n> tag bits.\n"),
% The --conf-low-tag-bits option is reserved for use
% by the `mmc' script; it is deliberately not documented.
% The --bits-per-word option is intended for use
% by the `mmc' script; it is deliberately not documented.
% The --bytes-per-word option is intended for use
% by the `mmc' script; it is deliberately not documented.
io__write_string("\t--branch-delay-slot\t"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tAssume that branch instructions have a delay slot.\n"),
io__write_string("\t--num-real-r-regs <n>\t"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tAssume registers r1 up to r<n> are real general purpose\n"),
io__write_string("\t\tregisters.\n"),
io__write_string("\t--num-real-f-regs <n>\t"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tAssume registers f1 up to f<n> are real floating point\n"),
io__write_string("\t\tregisters.\n"),
io__write_string("\t--num-real-r-temps <n>\t"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tAssume that <n> non-float temporaries will fit into\n"),
io__write_string("\t\treal machine registers.\n"),
io__write_string("\t--num-real-f-temps <n>\t"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tAssume that <n> float temporaries will fit into\n"),
io__write_string("\t\treal machine registers.\n"),
io__write_string("\t--args {simple, compact}\n"),
io__write_string("\t--arg-convention {simple, compact}\n"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tUse the specified argument passing convention\n"),
io__write_string("\t\tin the generated low-level C code. With the `simple'\n"),
io__write_string("\t\tconvention, the <n>th argument is passed in or out\n"),
io__write_string("\t\tusing register r<n>. With the `compact' convention,\n"),
io__write_string("\t\tthe <n>th input argument is passed using register r<n>,\n"),
io__write_string("\t\tand the <n>th output argument is returned using\n"),
io__write_string("\t\tregister r<n>. The compact convention generally leads to\n"),
io__write_string("\t\tmore efficient code. Use of the simple convention requires the\n"),
io__write_string("\t\tC code to be compiled with -UCOMPACT_ARGS.\n"),
io__write_string("\t--no-type-layout\n"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tDon't output base_type_layout structures or references\n"),
io__write_string("\t\tto them. (The C code also needs to be compiled with\n"),
io__write_string("\t\t`-DNO_TYPE_LAYOUT').\n"),
% This is a developer only option.
% io__write_string("\t--basic-stack-layout\n"),
% io__write_string("\t(This option is not for general use.)\n"),
% io__write_string("\t\tGenerate the simple stack_layout structures required\n"),
% io__write_string("\t\tfor stack traces.\n"),
% This is a developer only option.
% io__write_string("\t--agc-stack-layout\n"),
% io__write_string("\t(This option is not for general use.)\n"),
% io__write_string("\t\tGenerate the stack_layout structures required for\n"),
% io__write_string("\t\taccurate garbage collection.\n"),
%
% This is a developer only option.
% io__write_string("\t--procid-stack-layout\n"),
% io__write_string("\t(This option is not for general use.)\n"),
% io__write_string("\t\tGenerate the stack_layout structures required for\n"),
% io__write_string("\t\tlooking up procedure identification information.\n"),
% This is a developer only option.
% io__write_string("\t--trace-stack-layout\n"),
% io__write_string("\t(This option is not for general use.)\n"),
% io__write_string("\t\tGenerate the stack_layout structures required for\n"),
% io__write_string("\t\texecution tracing.\n"),
% This is a developer only option.
% io__write_string("\t--typeinfo-liveness\n"),
% io__write_string("\t(This option is not for general use.)\n"),
% io__write_string("\t\tUse an alternate technique for calculating liveness.\n"),
% io__write_string("\t\tKeeps typeinfo variables around for as long as any data\n"),
% io__write_string("\t\tthat has a type that contains that type variable is live\n"),
%
io__write_string("\t--unboxed-float\n"),
io__write_string("\t(This option is not for general use.)\n"),
io__write_string("\t\tDon't box floating point numbers.\n"),
io__write_string("\t\tThis assumes that a Mercury float will fit in a word.\n"),
io__write_string("\t\tThe C code needs to be compiled with `-UBOXED_FLOAT'.\n"),
io__write_string("\t\tIt may also need to be compiled with\n"),
io__write_string("\t\t`-DUSE_SINGLE_PREC_FLOAT', if double precision\n"),
io__write_string("\t\tfloats don't fit into a word.\n").
:- pred options_help_code_generation(io__state::di, io__state::uo) is det.
options_help_code_generation -->
io__write_string("\nCode generation options:\n"),
io__write_string("\t--low-level-debug\n"),
io__write_string("\t\tEnables various low-level debugging stuff, that was in\n"),
io__write_string("\t\tthe distant past used to debug the low-level code generation.\n"),
io__write_string("\t\tYou don't want to use this option unless you are hacking\n"),
io__write_string("\t\tthe Mercury compiler itself (and probably not even then).\n"),
io__write_string("\t\tCauses the generated code to become VERY big and VERY\n"),
io__write_string("\t\tinefficient. Slows down compilation a LOT.\n"),
io__write_string("\t--no-trad-passes\n"),
io__write_string("\t\tThe default `--trad-passes' completely processes each predicate\n"),
io__write_string("\t\tbefore going on to the next predicate.\n"),
io__write_string("\t\tThis option tells the compiler\n"),
io__write_string("\t\tto complete each phase of code generation on all predicates\n"),
io__write_string("\t\tbefore going on the next phase on all predicates.\n"),
% io__write_string("\t--no-polymorphism\n"),
% io__write_string("\t\tDon't handle polymorphic types.\n"),
% io__write_string("\t\t(Generates slightly more efficient code, but stops\n"),
% io__write_string("\t\tpolymorphism from working except in special cases.)\n"),
io__write_string("\t--no-reclaim-heap-on-nondet-failure\n"),
io__write_string("\t\tDon't reclaim heap on backtracking in nondet code.\n"),
io__write_string("\t--no-reclaim-heap-on-semidet-failure\n"),
io__write_string("\t\tDon't reclaim heap on backtracking in semidet code.\n"),
io__write_string("\t--no-reclaim-heap-on-failure\n"),
io__write_string("\t\tCombines the effect of the two options above.\n"),
io__write_string("\t--cc <compiler-name>\n"),
io__write_string("\t\tSpecify which C compiler to use.\n"),
io__write_string("\t--c-include-directory <dir>\n"),
io__write_string("\t\tSpecify the directory containing the Mercury C header files.\n"),
io__write_string("\t--cflags <options>\n"),
io__write_string("\t\tSpecify options to be passed to the C compiler.\n"),
% The --cflags-for-regs and --cflags-for-gotos options
% are reserved for use by the `mmc' script;
% they are deliberately not documented.
io__write_string("\t--c-debug\n"),
io__write_string("\t\tEnable debugging of the generated C code.\n"),
io__write_string("\t\t(This has the same effect as `--cflags -g'.)\n"),
io__write_string("\t--fact-table-max-array-size <n>\n"),
io__write_string("\t\tSpecify the maximum number of elements in a single\n"),
io__write_string("\t\t`pragma fact_table' data array (default: 1024).\n"),
io__write_string("\t--fact-table-hash-percent-full <percentage>\n"),
io__write_string("\t\tSpecify how full the `pragma fact_table' hash tables should be\n"),
io__write_string("\t\tallowed to get. Given as an integer percentage\n"),
io__write_string("\t\t(valid range: 1 to 100, default: 90).\n").
:- pred options_help_optimization(io__state::di, io__state::uo) is det.
options_help_optimization -->
io__write_string("\nOptimization Options:\n"),
io__write_string("\t-O <n>, --opt-level <n>, --optimization-level <n>\n"),
io__write_string("\t\tSet optimization level to <n>.\n"),
io__write_string("\t\tOptimization level -1 means no optimization\n"),
io__write_string("\t\twhile optimization level 6 means full optimization.\n"),
% io__write_string("\t\tFor a full description of each optimization level,\n"),
% io__write_string("\t\tsee the Mercury User's Guide.\n"),
io__write_string("\t--opt-space, --optimize-space\n"),
io__write_string("\t\tTurn on optimizations that reduce code size\n"),
io__write_string("\t\tand turn off optimizations that significantly\n"),
io__write_string("\t\tincrease code size.\n"),
io__write_string("\t--intermodule-optimization\n"),
io__write_string("\t\tPerform inlining and higher-order specialization of\n"),
io__write_string("\t\tthe code for predicates imported from other modules.\n"),
io__write_string("\t\tThis option must be set throughout the compilation process.\n"),
io__write_string("\t--trans-intermod-opt\n"),
io__write_string("\t--transitive-intermodule-optimization\n"),
io__write_string("\t\tImport the transitive intermodule optimization data.\n"),
io__write_string("\t\tThis data is imported from `<module>.trans_opt' files.\n"),
io__write_string("\t--split-c-files\n"),
io__write_string("\t\tGenerate each C function in its own C file,\n"),
io__write_string("\t\tso that the linker will optimize away unused code.\n"),
io__write_string("\t\tThis option significantly increases compilation time,\n"),
io__write_string("\t\tlink time, and intermediate disk space requirements,\n"),
io__write_string("\t\tbut in return reduces the size of the final\n"),
io__write_string("\t\texecutable, typically by about 10-20%.\n"),
io__write_string("\t\tThis option is only useful with `--procs-per-c-function 1'.\n").
:- pred options_help_hlds_hlds_optimization(io__state::di, io__state::uo)
is det.
options_help_hlds_hlds_optimization -->
io__write_string("\n High-level (HLDS -> HLDS) optimizations:\n"),
io__write_string("\t--no-inlining\n"),
io__write_string("\t\tDisable all forms of inlining.\n"),
io__write_string("\t--no-inline-simple\n"),
io__write_string("\t\tDisable the inlining of simple procedures.\n"),
io__write_string("\t--no-inline-single-use\n"),
io__write_string("\t\tDisable the inlining of procedures called only once.\n"),
io__write_string("\t--inline-compound-threshold <threshold>\n"),
io__write_string("\t\tInline a procedure if its size (measured roughly\n"),
io__write_string("\t\tin terms of the number of connectives in its internal form),\n"),
io__write_string("\t\tmultiplied by the number of times it is called,\n"),
io__write_string("\t\tis below the given threshold.\n"),
io__write_string("\t--inline-simple-threshold <threshold>\n"),
io__write_string("\t\tInline a procedure if its size is less than the\n"),
io__write_string("\t\tgiven threshold.\n"),
io__write_string("\t--intermod-inline-simple-threshold\n"),
io__write_string("\t\tSimilar to `--inline-simple-threshold', except used to\n"),
io__write_string("\t\tdetermine which predicates should be included in\n"),
io__write_string("\t\t`.opt' files. Note that changing this between writing\n"),
io__write_string("\t\tthe `.opt' file and compiling to C may cause link errors,\n"),
io__write_string("\t\tand too high a value may result in reduced performance.\n"),
io__write_string("\t--no-common-struct\n"),
io__write_string("\t\tDisable optimization of common term structures.\n"),
io__write_string("\t--no-common-goal\n"),
io__write_string("\t\tDisable optimization of common goals.\n"),
io__write_string("\t\tAt the moment this optimization\n"),
io__write_string("\t\tdetects only common deconstruction unifications.\n"),
io__write_string("\t\tDisabling this optimization reduces the class of predicates\n"),
io__write_string("\t\tthat the compiler considers to be deterministic.\n"),
% io__write_string("\t--constraint-propagation\n"),
% io__write_string("\t\tEnable the C-tranformation. (Doesn't work.)\n"),
io__write_string("\t--prev-code\n"),
io__write_string("\t\tMigrate into the start of branched goals.\n"),
io__write_string("\t--no-follow-code\n"),
io__write_string("\t\tDon't migrate into the end of branched goals.\n"),
io__write_string("\t--excess-assign\n"),
io__write_string("\t\tRemove excess assignment unifications.\n"),
io__write_string("\t--optimize-duplicate-calls\n"),
io__write_string("\t\tOptimize away multiple calls to a predicate\n"),
io__write_string("\t\twith the same input arguments.\n"),
io__write_string("\t--optimize-saved-vars\n"),
io__write_string("\t\tReorder goals to minimize the number of variables\n"),
io__write_string("\t\tthat have to be saved across calls.\n"),
io__write_string("\t--optimize-unused-args\n"),
io__write_string("\t\tRemove unused predicate arguments.\n"),
io__write_string("\t\tThis will cause the compiler to generate more\n"),
io__write_string("\t\tefficient code for many polymorphic predicates.\n"),
io__write_string("\t--intermod-unused-args\n"),
io__write_string("\t\tPerform unused argument removal across module boundaries.\n"),
io__write_string("\t\tThis option implies `--optimize-unused-args' and\n"),
io__write_string("\t\t`--intermodule-optimization'.\n"),
io__write_string("\t--optimize-higher-order\n"),
io__write_string("\t\tEnable specialization higher-order predicates.\n"),
io__write_string("\t--optimize-constructor-last-call\n"),
io__write_string("\t\tEnable the optimization of ""last"" calls that are followed by\n"),
io__write_string("\t\tconstructor application.\n"),
io__write_string("\t--deforestation\n"),
io__write_string("\t\tEnable deforestation. Deforestation is a program\n"),
io__write_string("\t\ttransformation whose aim is to avoid the construction of\n"),
io__write_string("\t\tintermediate data structures and to avoid repeated traversals\n"),
io__write_string("\t\tover data structures within a conjunction.\n"),
io__write_string("\t--deforestation-depth-limit\n"),
io__write_string("\t\tSpecify a depth limit for the deforestation algorithm\n"),
io__write_string("\t\tin addition to the usual termination checks.\n"),
io__write_string("\t\tA value of -1 specifies no depth limit. The default is 4.\n"),
io__write_string("\t--deforestation-vars-threshold\n"),
io__write_string("\t\tSpecify a rough limit on the number of variables\n"),
io__write_string("\t\tin a procedure created by deforestation.\n"),
io__write_string("\t\tA value of -1 specifies no limit. The default is 200.\n").
:- pred options_help_hlds_llds_optimization(io__state::di, io__state::uo) is det.
options_help_hlds_llds_optimization -->
io__write_string("\n Medium-level (HLDS -> LLDS) optimizations:\n"),
io__write_string("\t--no-smart-indexing\n"),
io__write_string("\t\tGenerate switches as a simple if-then-else chains;\n"),
io__write_string("\t\tdisable string hashing and integer table-lookup indexing.\n"),
io__write_string("\t--dense-switch-req-density <percentage>\n"),
io__write_string("\t\tThe jump table generated for an atomic switch\n"),
io__write_string("\t\tmust have at least this percentage of full slots (default: 25).\n"),
io__write_string("\t--lookup-switch-req-density <percentage>\n"),
io__write_string("\t\tThe jump table generated for an atomic switch\n"),
io__write_string("\t\tin which all the outputs are constant terms\n"),
io__write_string("\t\tmust have at least this percentage of full slots (default: 25).\n"),
io__write_string("\t--dense-switch-size <n>\n"),
io__write_string("\t\tThe jump table generated for an atomic switch\n"),
io__write_string("\t\tmust have at least this many entries (default: 4).\n"),
io__write_string("\t--lookup-switch-size <n>\n"),
io__write_string("\t\tThe lookup table generated for an atomic switch\n"),
io__write_string("\t\tmust have at least this many entries (default: 4).\n"),
io__write_string("\t--string-switch-size <n>\n"),
io__write_string("\t\tThe hash table generated for a string switch\n"),
io__write_string("\t\tmust have at least this many entries (default: 8).\n"),
io__write_string("\t--tag-switch-size <n>\n"),
io__write_string("\t\tThe number of alternatives in a tag switch\n"),
io__write_string("\t\tmust be at least this number (default: 3).\n"),
io__write_string("\t--try-switch-size <n>\n"),
io__write_string("\t\tThe number of alternatives in a try/retry chain switch\n"),
io__write_string("\t\tmust be at least this number (default: 3).\n"),
io__write_string("\t--binary-switch-size <n>\n"),
io__write_string("\t\tThe number of alternatives in a binary search switch\n"),
io__write_string("\t\tmust be at least this number (default: 4).\n"),
io__write_string("\t--no-static-ground-terms\n"),
io__write_string("\t\tDisable the optimization of constructing constant ground terms\n"),
io__write_string("\t\tat compile time and storing them as static constants.\n"),
io__write_string("\t--no-middle-rec\n"),
io__write_string("\t\tDisable the middle recursion optimization.\n"),
io__write_string("\t--no-simple-neg\n"),
io__write_string("\t\tDon't generate simplified code for simple negations.\n"),
io__write_string("\t--no-follow-vars\n"),
io__write_string("\t\tDon't optimize the assignment of registers in branched goals.\n").
:- pred options_help_llds_llds_optimization(io__state::di, io__state::uo) is det.
options_help_llds_llds_optimization -->
io__write_string("\n Low-level (LLDS -> LLDS) optimizations:\n"),
io__write_string("\t--no-llds-optimize\n"),
io__write_string("\t\tDisable the low-level optimization passes.\n"),
io__write_string("\t--optimize-dead-procs\n"),
io__write_string("\t\tEnable dead predicate elimination.\n"),
io__write_string("\t--no-optimize-peep\n"),
io__write_string("\t\tDisable local peephole optimizations.\n"),
io__write_string("\t--no-optimize-jumps\n"),
io__write_string("\t\tDisable elimination of jumps to jumps.\n"),
io__write_string("\t--no-optimize-fulljumps\n"),
io__write_string("\t\tDisable elimination of jumps to ordinary code.\n"),
io__write_string("\t--no-optimize-labels\n"),
io__write_string("\t\tDisable elimination of dead labels and code.\n"),
io__write_string("\t--optimize-dups\n"),
io__write_string("\t\tEnable elimination of duplicate code.\n"),
%%% io__write_string("\t--optimize-copyprop\n"),
%%% io__write_string("\t\tEnable the copy propagation optimization.\n"),
io__write_string("\t--optimize-value-number\n"),
io__write_string("\t\tPerform value numbering on extended basic blocks.\n"),
io__write_string("\t--no-optimize-frames\n"),
io__write_string("\t\tDisable stack frame optimizations.\n"),
io__write_string("\t--no-optimize-delay-slot\n"),
io__write_string("\t\tDisable branch delay slot optimizations.\n"),
io__write_string("\t--optimize-repeat <n>\n"),
io__write_string("\t\tIterate most optimizations at most <n> times (default: 3).\n"),
io__write_string("\t--optimize-vnrepeat <n>\n"),
io__write_string("\t\tIterate value numbering at most <n> times (default: 1).\n"),
io__write_string("\t--pred-value-number\n"),
io__write_string("\t\tExtend value numbering to entire predicates.\n").
:- pred options_help_output_optimization(io__state::di, io__state::uo) is det.
options_help_output_optimization -->
io__write_string("\n Output-level (LLDS -> C) optimizations:\n"),
io__write_string("\t--use-macro-for-redo-fail\n"),
io__write_string("\t\tEmit the fail or redo macro instead of a branch\n"),
io__write_string("\t\tto the fail or redo code in the runtime system.\n"),
io__write_string("\t\tThis produces slightly bigger but slightly faster code.\n"),
io__write_string("\t--no-emit-c-loops\n"),
io__write_string("\t\tUse only gotos, don't emit C loop constructs.\n"),
io__write_string("\t--procs-per-c-function <n>\n"),
io__write_string("\t\tPut the code for up to <n> Mercury\n"),
io__write_string("\t\tprocedures in a single C function. The default\n"),
io__write_string("\t\tvalue of <n> is one. Increasing <n> can produce\n"),
io__write_string("\t\tslightly more efficient code, but makes compilation slower.\n"),
io__write_string("\t--everything-in-one-c-function\n"),
io__write_string("\t\tThis option has the effect of putting the code for all\n"),
io__write_string("\t\tthe Mercury procedures in a single C function,\n"),
io__write_string("\t\twhich produces the most efficient code but tends to\n"),
io__write_string("\t\tseverely stress the C compiler on large modules.\n").
:- pred options_help_object_optimization(io__state::di, io__state::uo) is det.
options_help_object_optimization -->
io__write_string("\n Object-level (C -> object code) optimizations:\n"),
io__write_string("\t\tNote that if you are using Mmake, you need to pass these\n"),
io__write_string("\t\toptions to `mgnuc' rather than to `mmc'.\n"),
io__write_string("\t--no-c-optimize\n"),
io__write_string("\t\tDon't enable the C compiler's optimizations.\n"),
io__write_string("\t--inline-alloc\n"),
io__write_string("\t\tInline calls to GC_malloc().\n"),
io__write_string("\t\tThis can improve performance a fair bit,\n"),
io__write_string("\t\tbut may significantly increase code size.\n"),
io__write_string("\t\tThis option has no effect if `--gc conservative'\n"),
io__write_string("\t\tis not set or if the C compiler is not GNU C.\n").
:- pred options_help_link(io__state::di, io__state::uo) is det.
options_help_link -->
io__write_string("\nLink Options:\n"),
io__write_string("\t-o <filename>, --output-file <filename>\n"),
io__write_string("\t\tSpecify the name of the final executable.\n"),
io__write_string("\t\t(The default executable name is the same as the name\n"),
io__write_string("\t\tof the first module on the command line.)\n"),
io__write_string("\t--link-flags <options>\n"),
io__write_string("\t\tSpecify options to be passed to the linker.\n"),
io__write_string("\t-L <directory>, --library-directory <directory>\n"),
io__write_string("\t\tAppend <directory> to the list of directories in which\n"),
io__write_string("\t\tto search for libraries.\n"),
io__write_string("\t-l <library>, --library <library>\n"),
io__write_string("\t\tLink with the specified library.\n"),
io__write_string("\t--link-object <object-file>\n"),
io__write_string("\t\tLink with the specified object file.\n").
:- pred options_help_misc(io__state::di, io__state::uo) is det.
options_help_misc -->
io__write_string("\nMiscellaneous Options:\n"),
% io__write_string("\t-H <n>, --heap-space <n>\n"),
% io__write_string("\t\tPre-allocate <n> kilobytes of heap space.\n"),
% io__write_string("\t\tThis option is now obsolete. In the past it\n"),
% io__write_string("\t\twas used to avoid NU-Prolog's\n"),
% io__write_string("\t\t\t""Panic: growing stacks has required shifting the heap""\n"),
% io__write_string("\t\tmessage.\n"),
io__write_string("\t-I <dir>, --search-directory <dir>\n"),
io__write_string("\t\tAdd <dir> to the list of directories to be searched for \n\t\timported modules.\n"),
io__write_string("\t--intermod-directory <dir>\n"),
io__write_string("\t\tAdd <dir> to the list of directories to be\n"),
io__write_string("\t\tsearched for `.opt' files.\n"),
io__write_string("\t--no-use-search-directories-for-intermod\n"),
io__write_string("\t\tDon't add arguments to `--search-directory' to the list\n"),
io__write_string("\t\tof directories to search for `.opt' files - use only the\n"),
io__write_string("\t\tdirectories given by `--intermod-directory'.\n"),
io__write_string("\t--use-subdirs\n"),
io__write_string("\t\tGenerate intermediate files in a `Mercury' subdirectory,\n"),
io__write_string("\t\trather than generating them in the current directory.\n").
:- end_module options.
%-----------------------------------------------------------------------------%