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mercury/compiler/complexity.m
Zoltan Somogyi be5b71861b Convert almost all the compiler modules to use . instead of __ as
Estimated hours taken: 6
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compiler/*.m:
	Convert almost all the compiler modules to use . instead of __ as
	the module qualifier.

	In some cases, change the names of predicates and types to make them
	meaningful without the module qualifier. In particular, most of the
	types that used to be referred to with an "mlds__" prefix have been
	changed to have a "mlds_" prefix instead of changing the prefix to
	"mlds.".

	There are no algorithmic changes.
2006-03-17 01:40:46 +00:00

586 lines
22 KiB
Mathematica

%-----------------------------------------------------------------------------%
% vim: ft=mercury ts=4 sw=4 et
%-----------------------------------------------------------------------------%
% Copyright (C) 2004-2006 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: complexity.m.
% Author: zs.
% This module performs a program transformation that gathers information about
% the relationship between the sizes of a procedure's input arguments and the
% performance cost of the procedure in terms of memory and time.
%-----------------------------------------------------------------------------%
:- module transform_hlds.complexity.
:- interface.
:- import_module hlds.hlds_module.
:- import_module hlds.hlds_pred.
:- import_module io.
:- import_module std_util.
%-----------------------------------------------------------------------------%
% read_spec_file(FileName, MaybeNumLinesProcMap, !IO):
% Try to read in a complexity proc map from FileName. If successful,
% return the proc map and the number of entries in it. If not, return an
% error message.
%
:- pred read_spec_file(string::in,
maybe_error(pair(int, complexity_proc_map))::out, io::di, io::uo) is det.
% is_in_complexity_proc_map(ProcMap, ModuleInfo, PredId, ProcId):
% If PredId/ProcId in ModuleInfo is in ProcMap, return its slot number
% in the complexity table.
%
:- func is_in_complexity_proc_map(complexity_proc_map, module_info,
pred_id, proc_id) = maybe(int).
% Return the name of the given procedure in the format required by the
% complexity map file.
%
:- func complexity_proc_name(module_info, pred_id, proc_id) = string.
% Transform the given procedure if it is in the complexity map.
%
:- pred process_proc_msg(int::in, complexity_proc_map::in,
pred_id::in, proc_id::in, proc_info::in, proc_info::out,
module_info::in, module_info::out, io::di, io::uo) is det.
%-----------------------------------------------------------------------------%
%-----------------------------------------------------------------------------%
:- implementation.
:- import_module check_hlds.mode_util.
:- import_module check_hlds.polymorphism.
:- import_module check_hlds.type_util.
:- import_module hlds.code_model.
:- import_module hlds.goal_util.
:- import_module hlds.hlds_data.
:- import_module hlds.hlds_goal.
:- import_module hlds.instmap.
:- import_module libs.compiler_util.
:- import_module libs.globals.
:- import_module libs.options.
:- import_module mdbcomp.prim_data.
:- import_module parse_tree.error_util.
:- import_module parse_tree.prog_data.
:- import_module parse_tree.prog_mode.
:- import_module parse_tree.prog_out.
:- import_module parse_tree.prog_type.
:- import_module parse_tree.prog_util.
:- import_module transform_hlds.term_norm.
:- import_module assoc_list.
:- import_module bool.
:- import_module int.
:- import_module list.
:- import_module map.
:- import_module set.
:- import_module string.
:- import_module term.
:- import_module varset.
%-----------------------------------------------------------------------------%
read_spec_file(FileName, MaybeNumLinesProcMap, !IO) :-
io.open_input(FileName, ResStream, !IO),
(
ResStream = error(Error),
MaybeNumLinesProcMap = error(io.error_message(Error))
;
ResStream = ok(Stream),
read_spec_file_lines(Stream, 0, NumLines, MaybeError,
map.init, ProcMap, !IO),
(
MaybeError = yes(Msg),
MaybeNumLinesProcMap = error(Msg)
;
MaybeError = no,
MaybeNumLinesProcMap = ok(NumLines - ProcMap)
)
).
:- pred read_spec_file_lines(io.input_stream::in, int::in, int::out,
maybe(string)::out, map(string, int)::in, map(string, int)::out,
io::di, io::uo) is det.
read_spec_file_lines(Stream, CurLineNum, NumLines, MaybeError, !ProcMap,
!IO) :-
io.read_line(Stream, ResLine, !IO),
(
ResLine = eof,
NumLines = CurLineNum,
MaybeError = no
;
ResLine = error(Error),
NumLines = CurLineNum,
MaybeError = yes(io.error_message(Error))
;
ResLine = ok(Chars0),
list.filter(unify('\n'), Chars0, _, Chars),
string.from_char_list(Chars, ProcName),
( map.insert(!.ProcMap, ProcName, CurLineNum, !:ProcMap) ->
read_spec_file_lines(Stream, CurLineNum + 1,
NumLines, MaybeError, !ProcMap, !IO)
;
NumLines = CurLineNum,
MaybeError = yes("repeated line: " ++ ProcName)
)
).
%-----------------------------------------------------------------------------%
complexity_proc_name(ModuleInfo, PredId, ProcId) = FullName :-
module_info_get_name(ModuleInfo, ModuleSymName),
module_info_pred_info(ModuleInfo, PredId, PredInfo),
PredName = pred_info_name(PredInfo),
QualifiedName = qualified(ModuleSymName, PredName),
Arity = pred_info_orig_arity(PredInfo),
NameAndArity = sym_name_and_arity_to_string(QualifiedName / Arity),
proc_id_to_int(ProcId, ProcIdInt),
FullName = NameAndArity ++ "-" ++ int_to_string(ProcIdInt).
is_in_complexity_proc_map(ProcMap, ModuleInfo, PredId, ProcId) = IsInMap :-
FullName = complexity_proc_name(ModuleInfo, PredId, ProcId),
( map.search(ProcMap, FullName, ProcNum) ->
IsInMap = yes(ProcNum)
;
IsInMap = no
).
%-----------------------------------------------------------------------------%
process_proc_msg(NumProcs, ProcMap, PredId, ProcId, !ProcInfo, !ModuleInfo,
!IO) :-
IsInMap = is_in_complexity_proc_map(ProcMap, !.ModuleInfo,
PredId, ProcId),
(
IsInMap = yes(ProcNum),
FullName = complexity_proc_name(!.ModuleInfo, PredId, ProcId),
globals.io_lookup_bool_option(verbose, Verbose, !IO),
(
Verbose = yes,
pred_id_to_int(PredId, PredIdInt),
proc_id_to_int(ProcId, ProcIdInt),
Pieces = [words("% Applying complexity experiment " ++
"transformation to "),
fixed(FullName ++ ":"),
fixed(int_to_string(PredIdInt) ++ "/" ++
int_to_string(ProcIdInt))],
write_error_pieces_plain(Pieces, !IO)
;
Verbose = no
),
process_proc(NumProcs, ProcNum, FullName, PredId,
!ProcInfo, !ModuleInfo)
;
IsInMap = no
).
% Example of transformation for model_det:
%
% p(In1, ..., InN, ...) :-
% impure complexity_is_active(NumProcs, ProcNum, ProcName,
% IsActive, Base),
% (
% IsActive = no,
% impure complexity_call_proc(Slot, In1, ..., InN),
% <original code>,
% impure complexity_exit_proc(Slot)
% ;
% IsActive = yes,
% <original code>
% ).
%
% Example of transformation for model_semi:
%
% p(In1, ..., InN, ...) :-
% impure complexity_is_active(NumProcs, ProcNum, ProcName,
% IsActive, Base),
% (
% IsActive = no,
% impure complexity_call_proc(Slot, In1, ..., InN),
% (
% <original code>,
% impure complexity_exit_proc(Slot)
% ;
% impure complexity_fail_proc(Slot),
% fail
% )
% ;
% IsActive = yes,
% <original code>
% ).
%
% Example of transformation for model_non:
%
% p(In1, ..., InN, ...) :-
% impure complexity_is_active(NumProcs, ProcNum, ProcName,
% IsActive, Base),
% (
% IsActive = no,
% impure complexity_call_proc(Slot, In1, ..., InN),
% (
% <original code>,
% (
% impure complexity_exit_proc(Slot)
% ;
% impure complexity_redo_proc(Slot),
% fail
% )
% ;
% impure complexity_fail_proc(Slot),
% fail
% )
% ;
% IsActive = yes,
% <original code>
% ).
:- func slot_var_name = string.
slot_var_name = "SlotVar".
:- pred process_proc(int::in, int::in, string::in, pred_id::in,
proc_info::in, proc_info::out, module_info::in, module_info::out)
is det.
process_proc(NumProcs, ProcNum, FullName, PredId, !ProcInfo, !ModuleInfo) :-
proc_info_interface_determinism(!.ProcInfo, Detism),
determinism_to_code_model(Detism, CodeModel),
proc_info_headvars(!.ProcInfo, HeadVars),
proc_info_argmodes(!.ProcInfo, ArgModes),
proc_info_varset(!.ProcInfo, VarSet),
proc_info_vartypes(!.ProcInfo, VarTypes),
proc_info_goal(!.ProcInfo, OrigGoal),
goal_info_get_context(OrigGoalInfo, Context),
% Even if the original goal doesn't use all of the headvars, the code
% generated by the transformation does, so we need to compute the
% nonlocals from the headvars rather than getting it from the
% nonlocals field in the original goal.
set.list_to_set(HeadVars, OrigNonLocals),
OrigGoal = _ - OrigGoalInfo,
goal_info_get_instmap_delta(OrigGoalInfo, OrigInstMapDelta),
add_goal_info_purity_feature(purity_impure,
OrigGoalInfo, ImpureOrigGoalInfo),
IsActiveVarName = "IsActive",
generate_new_var(IsActiveVarName, is_active_type, !ProcInfo, IsActiveVar),
classify_args(HeadVars, ArgModes, !.ModuleInfo, VarSet, VarTypes,
VarInfos),
allocate_slot_numbers_cl(VarInfos, 0, NumberedProfiledVars),
list.length(NumberedProfiledVars, NumProfiledVars),
generate_slot_goals(ProcNum, NumberedProfiledVars, NumProfiledVars,
Context, PredId, !ProcInfo, !ModuleInfo, SlotVar, SlotVarName,
SlotGoals),
IsActiveOutputArg = foreign_arg(IsActiveVar,
yes(IsActiveVarName - out_mode), is_active_type, native_if_possible),
SlotInputArg = foreign_arg(SlotVar,
yes(SlotVarName - in_mode), int_type, native_if_possible),
ProcNumStr = int_to_string(ProcNum),
IsActivePred = "complexity_is_active",
IsActiveStr = "\tMR_" ++ IsActivePred ++ "(" ++
int_to_string(NumProcs) ++ ", "
++ ProcNumStr ++ ", """ ++ FullName ++ """, " ++
int_to_string(NumProfiledVars) ++ ", " ++
IsActiveVarName ++ ");\n",
complexity_generate_foreign_proc(IsActivePred, det,
[IsActiveOutputArg], [], "", IsActiveStr, "", [IsActiveVar],
!.ModuleInfo, Context, IsActiveGoal),
ExitPred = "complexity_exit_proc",
ExitStr = "\tMR_" ++ ExitPred ++ "(" ++
ProcNumStr ++ ", " ++ slot_var_name ++ ");\n",
complexity_generate_foreign_proc(ExitPred, det,
[SlotInputArg], [], "", ExitStr, "", [],
!.ModuleInfo, Context, ExitGoal),
FailPred = "complexity_fail_proc",
FailStr = "\tMR_" ++ FailPred ++ "(" ++
ProcNumStr ++ ", " ++ slot_var_name ++ ");\n",
complexity_generate_foreign_proc(FailPred, failure,
[SlotInputArg], [], "", FailStr, "", [],
!.ModuleInfo, Context, FailGoal),
RedoPred = "complexity_redo_proc",
RedoStr = "\tMR_" ++ RedoPred ++ "(" ++
ProcNumStr ++ ", " ++ slot_var_name ++ ");\n",
complexity_generate_foreign_proc(RedoPred, failure,
[SlotInputArg], [], "", RedoStr, "", [],
!.ModuleInfo, Context, RedoGoal0),
(
CodeModel = model_det,
TransformedGoalExpr = conj(plain_conj,
SlotGoals ++ [OrigGoal, ExitGoal]),
TransformedGoal = TransformedGoalExpr - ImpureOrigGoalInfo
;
CodeModel = model_semi,
OrigAfterGoal = conj(plain_conj, [OrigGoal, ExitGoal])
- ImpureOrigGoalInfo,
DisjGoal = disj([OrigAfterGoal, FailGoal]) - ImpureOrigGoalInfo,
TransformedGoal = conj(plain_conj,
SlotGoals ++ [DisjGoal]) - ImpureOrigGoalInfo
;
CodeModel = model_non,
RedoGoal0 = RedoGoalExpr - RedoGoalInfo0,
goal_info_add_feature(preserve_backtrack_into,
RedoGoalInfo0, RedoGoalInfo),
RedoGoal = RedoGoalExpr - RedoGoalInfo,
instmap_delta_init_reachable(AfterInstMapDelta),
goal_info_init(list_to_set([SlotVar]), AfterInstMapDelta,
multidet, purity_impure, Context, AfterGoalInfo),
AfterGoal = disj([ExitGoal, RedoGoal]) - AfterGoalInfo,
OrigAfterGoal = conj(plain_conj, [OrigGoal, AfterGoal])
- ImpureOrigGoalInfo,
DisjGoal = disj([OrigAfterGoal, FailGoal]) - ImpureOrigGoalInfo,
TransformedGoal = conj(plain_conj, SlotGoals ++ [DisjGoal])
- ImpureOrigGoalInfo
),
mercury_term_size_prof_builtin_module(TSPB),
SwitchArms = [
case(cons(qualified(TSPB, "is_inactive"), 0), TransformedGoal),
case(cons(qualified(TSPB, "is_active"), 0), OrigGoal)
],
SwitchExpr = switch(IsActiveVar, cannot_fail, SwitchArms),
goal_info_init(OrigNonLocals, OrigInstMapDelta, Detism, purity_impure,
Context, SwitchGoalInfo),
SwitchGoal = SwitchExpr - SwitchGoalInfo,
GoalExpr = conj(plain_conj, [IsActiveGoal, SwitchGoal]),
goal_info_init(OrigNonLocals, OrigInstMapDelta, Detism, purity_impure,
Context, GoalInfo),
Goal = GoalExpr - GoalInfo,
proc_info_set_goal(Goal, !ProcInfo),
assoc_list.values(VarInfos, Infos),
ComplexityInfo = complexity_proc_info(ProcNum, FullName, Infos),
module_info_get_complexity_proc_infos(!.ModuleInfo, ComplexityInfos0),
ComplexityInfos = [ComplexityInfo | ComplexityInfos0],
module_info_set_complexity_proc_infos(ComplexityInfos, !ModuleInfo).
%-----------------------------------------------------------------------------%
% Generate a foreign_proc goal of the form:
%
% MR_ComplexityProc *proc;
%
% MR_complexity_call_proc(proc_num, slot);
% proc = &MR_complexity_procs[proc_num];
% MR_complexity_fill_size_slot(proc, slot, num_inputs, 1, size1);
% ...
% MR_complexity_fill_size_slot(proc, slot, num_inputs, N, sizeN);
%
% prefixed by the goals required to generate the typeinfos we need
% to compute the sizes.
%
:- pred generate_slot_goals(int::in, assoc_list(prog_var, int)::in,
int::in, term.context::in, pred_id::in,
proc_info::in, proc_info::out, module_info::in, module_info::out,
prog_var::out, string::out, list(hlds_goal)::out) is det.
generate_slot_goals(ProcNum, NumberedVars, NumProfiledVars, Context, PredId,
!ProcInfo, !ModuleInfo, SlotVar, SlotVarName, Goals) :-
SlotVarName = slot_var_name,
generate_new_var(SlotVarName, int_type, !ProcInfo, SlotVar),
ProcVarName = "proc",
generate_size_goals(NumberedVars, Context, NumProfiledVars,
ProcVarName, SlotVarName, PredId, !ProcInfo, !ModuleInfo,
PrefixGoals, ForeignArgs, FillCodeStr),
SlotVarArg = foreign_arg(SlotVar,
yes(SlotVarName - out_mode), int_type, native_if_possible),
PredName = "complexity_call_proc",
DeclCodeStr = "\tMR_ComplexityProc *" ++ ProcVarName ++ ";\n",
PredCodeStr = "\tMR_" ++ PredName ++ "(" ++
int_to_string(ProcNum) ++ ", " ++ SlotVarName ++ ");\n",
ProcStr = "\t" ++ ProcVarName ++ " = &MR_complexity_procs[" ++
int_to_string(ProcNum) ++ "];\n",
complexity_generate_foreign_proc(PredName, det, [SlotVarArg],
ForeignArgs, DeclCodeStr, PredCodeStr, ProcStr ++ FillCodeStr,
[SlotVar], !.ModuleInfo, Context, CallGoal),
list.append(PrefixGoals, [CallGoal], Goals).
:- pred generate_size_goals(assoc_list(prog_var, int)::in,
term.context::in, int::in, string::in, string::in, pred_id::in,
proc_info::in, proc_info::out, module_info::in, module_info::out,
list(hlds_goal)::out, list(foreign_arg)::out, string::out) is det.
generate_size_goals([], _, _, _, _, _, !ProcInfo, !ModuleInfo, [], [], "").
generate_size_goals([Var - VarSeqNum | NumberedVars], Context, NumProfiledVars,
ProcVarName, SlotVarName, PredId, !ProcInfo, !ModuleInfo,
Goals ++ RestGoals, ForeignArgs ++ RestForeignArgs,
CodeStr ++ RestCodeStr) :-
generate_size_goal(Var, VarSeqNum, Context, NumProfiledVars,
ProcVarName, SlotVarName, PredId, !ProcInfo, !ModuleInfo,
Goals, ForeignArgs, CodeStr),
generate_size_goals(NumberedVars, Context, NumProfiledVars,
ProcVarName, SlotVarName, PredId, !ProcInfo, !ModuleInfo,
RestGoals, RestForeignArgs, RestCodeStr).
:- pred generate_size_goal(prog_var::in, int::in, term.context::in,
int::in, string::in, string::in, pred_id::in,
proc_info::in, proc_info::out, module_info::in, module_info::out,
list(hlds_goal)::out, list(foreign_arg)::out, string::out) is det.
generate_size_goal(ArgVar, VarSeqNum, Context, NumProfiledVars, ProcVarName,
SlotVarName, PredId, !ProcInfo, !ModuleInfo, Goals,
ForeignArgs, CodeStr) :-
proc_info_vartypes(!.ProcInfo, VarTypes1),
map.lookup(VarTypes1, ArgVar, VarType),
MacroName = "MR_complexity_fill_size_slot",
make_type_info_var(VarType, Context, PredId, !ProcInfo, !ModuleInfo,
TypeInfoVar, Goals),
% Since we just created TypeInfoVar, it isn't in VarTypes1.
proc_info_vartypes(!.ProcInfo, VarTypes2),
map.lookup(VarTypes2, TypeInfoVar, TypeInfoType),
ArgName = "arg" ++ int_to_string(VarSeqNum),
TypeInfoArgName = "input_typeinfo" ++ int_to_string(VarSeqNum),
ForeignArg = foreign_arg(ArgVar,
yes(ArgName - in_mode), VarType, native_if_possible),
ForeignTypeInfoArg = foreign_arg(TypeInfoVar,
yes(TypeInfoArgName - in_mode), TypeInfoType, native_if_possible),
ForeignArgs = [ForeignTypeInfoArg, ForeignArg],
CodeStr = "\t" ++ MacroName ++ "(" ++
ProcVarName ++ ", " ++
SlotVarName ++ ", " ++
int_to_string(NumProfiledVars) ++ ", " ++
int_to_string(VarSeqNum) ++ ",\n\t\t" ++
"MR_term_size((MR_TypeInfo) " ++
TypeInfoArgName ++ ", " ++ ArgName ++ "));\n".
%-----------------------------------------------------------------------------%
:- pred generate_new_var(string::in, mer_type::in,
proc_info::in, proc_info::out, prog_var::out) is det.
generate_new_var(Name, Type, !ProcInfo, Var) :-
proc_info_varset(!.ProcInfo, VarSet0),
proc_info_vartypes(!.ProcInfo, VarTypes0),
varset.new_named_var(VarSet0, Name, Var, VarSet),
map.set(VarTypes0, Var, Type, VarTypes),
proc_info_set_varset(VarSet, !ProcInfo),
proc_info_set_vartypes(VarTypes, !ProcInfo).
:- pred complexity_generate_foreign_proc(string::in, determinism::in,
list(foreign_arg)::in, list(foreign_arg)::in, string::in, string::in,
string::in, list(prog_var)::in, module_info::in, term.context::in,
hlds_goal::out) is det.
complexity_generate_foreign_proc(PredName, Detism, Args, ExtraArgs,
PrefixCode, Code, SuffixCode, BoundVars, ModuleInfo, Context, Goal) :-
mercury_term_size_prof_builtin_module(BuiltinModule),
Attrs0 = default_attributes(c),
set_may_call_mercury(will_not_call_mercury, Attrs0, Attrs),
goal_util.generate_foreign_proc(BuiltinModule, PredName, predicate,
only_mode, Detism, Attrs, Args, ExtraArgs,
PrefixCode, Code, SuffixCode, [impure_goal],
ground_vars(BoundVars), ModuleInfo, Context, Goal).
%-----------------------------------------------------------------------------%
:- pred classify_args(list(prog_var)::in, list(mer_mode)::in, module_info::in,
prog_varset::in, vartypes::in,
assoc_list(prog_var, complexity_arg_info)::out) is det.
classify_args([], [], _, _, _, []).
classify_args([_ | _], [], _, _, _, _) :-
unexpected(this_file, "classify_args: lists not same length").
classify_args([], [_ | _], _, _, _, _) :-
unexpected(this_file, "classify_args: lists not same length").
classify_args([Var | Vars], [Mode | Modes], ModuleInfo, VarSet, VarTypes,
[Var - complexity_arg_info(MaybeName, Kind) | VarInfos]) :-
classify_args(Vars, Modes, ModuleInfo, VarSet, VarTypes, VarInfos),
( varset.search_name(VarSet, Var, Name) ->
MaybeName = yes(Name)
;
MaybeName = no
),
( mode_is_fully_input(ModuleInfo, Mode) ->
map.lookup(VarTypes, Var, VarType),
( zero_size_type(VarType, ModuleInfo) ->
Kind = complexity_input_fixed_size
;
Kind = complexity_input_variable_size
)
;
Kind = complexity_output
).
%-----------------------------------------------------------------------------%
:- pred allocate_slot_numbers_cl(assoc_list(prog_var, complexity_arg_info)::in,
int::in, assoc_list(prog_var, int)::out) is det.
allocate_slot_numbers_cl([], _, []).
allocate_slot_numbers_cl([Var - Info | VarInfos], Offset,
NumberedProfiledVars) :-
Info = complexity_arg_info(_, Kind),
( Kind = complexity_input_variable_size ->
allocate_slot_numbers_cl(VarInfos, Offset + 1,
NumberedProfiledVarsTail),
NumberedProfiledVars = [Var - Offset | NumberedProfiledVarsTail]
;
allocate_slot_numbers_cl(VarInfos, Offset, NumberedProfiledVars)
).
:- func ground_vars(list(prog_var)) = assoc_list(prog_var, mer_inst).
ground_vars(Vars) = VarsAndGround :-
VarsAndGround = list.map(pair_with_ground, Vars).
:- func pair_with_ground(prog_var) = pair(prog_var, mer_inst).
pair_with_ground(Var) = Var - ground(shared, none).
%-----------------------------------------------------------------------------%
:- func is_active_type = mer_type.
is_active_type = Type :-
mercury_term_size_prof_builtin_module(M),
construct_type(qualified(M, "complexity_is_active") - 0, [], Type).
%-----------------------------------------------------------------------------%
:- pred make_type_info_var(mer_type::in, term.context::in, pred_id::in,
proc_info::in, proc_info::out, module_info::in, module_info::out,
prog_var::out, list(hlds_goal)::out) is det.
make_type_info_var(Type, Context, PredId, !ProcInfo, !ModuleInfo,
TypeInfoVar, TypeInfoGoals) :-
module_info_pred_info(!.ModuleInfo, PredId, PredInfo0),
create_poly_info(!.ModuleInfo, PredInfo0, !.ProcInfo, PolyInfo0),
polymorphism.make_type_info_var(Type, Context, TypeInfoVar,
TypeInfoGoals, PolyInfo0, PolyInfo),
poly_info_extract(PolyInfo, PredInfo0, PredInfo,
!ProcInfo, !:ModuleInfo),
expect(unify(PredInfo0, PredInfo), this_file,
"make_type_info_var: modified pred_info").
%-----------------------------------------------------------------------------%
:- func this_file = string.
this_file = "complexity.m".
%-----------------------------------------------------------------------------%
:- end_module complexity.
%-----------------------------------------------------------------------------%