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source: src/main.cc @ 79eaeb7

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpersistent-indexerpthread-emulationqualifiedEnum

Last change on this file since 79eaeb7 was 79eaeb7, checked in by tdelisle <tdelisle@…>, 5 years ago
Improved printing, parent printing still incorrect
Property mode set to `100644`
File size: 20.6 KB

Line
1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// main.cc --
8	//
9	// Author : Richard C. Bilson
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Sat Feb 16 09:14:04 2019
13	// Update Count : 500
14	//
15
16	#include <cxxabi.h> // for __cxa_demangle
17	#include <execinfo.h> // for backtrace, backtrace_symbols
18	#include <getopt.h> // for no_argument, optind, geto...
19	#include <signal.h> // for signal, SIGABRT, SIGSEGV
20	#include <cassert> // for assertf
21	#include <cstdio> // for fopen, FILE, fclose, stdin
22	#include <cstdlib> // for exit, free, abort, EXIT_F...
23	#include <cstring> // for index
24	#include <fstream> // for ofstream
25	#include <iostream> // for operator<<, basic_ostream
26	#include <iterator> // for back_inserter
27	#include <list> // for list
28	#include <string> // for char_traits, operator<<
29
30	#include "CompilationState.h"
31	#include "../config.h" // for CFA_LIBDIR
32	#include "CodeGen/FixMain.h" // for FixMain
33	#include "CodeGen/FixNames.h" // for fixNames
34	#include "CodeGen/Generate.h" // for generate
35	#include "CodeTools/DeclStats.h" // for printDeclStats
36	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
37	#include "CodeTools/TrackLoc.h" // for fillLocations
38	#include "Common/CompilerError.h" // for CompilerError
39	#include "Common/Stats.h"
40	#include "Common/PassVisitor.h"
41	#include "Common/SemanticError.h" // for SemanticError
42	#include "Common/UnimplementedError.h" // for UnimplementedError
43	#include "Common/utility.h" // for deleteAll, filter, printAll
44	#include "Concurrency/Waitfor.h" // for generateWaitfor
45	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
46	#include "ControlStruct/Mutate.h" // for mutate
47	#include "GenPoly/Box.h" // for box
48	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
49	#include "GenPoly/Lvalue.h" // for convertLvalue
50	#include "GenPoly/Specialize.h" // for convertSpecializations
51	#include "InitTweak/FixInit.h" // for fix
52	#include "InitTweak/GenInit.h" // for genInit
53	#include "MakeLibCfa.h" // for makeLibCfa
54	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
55	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
56	#include "Parser/TypedefTable.h" // for TypedefTable
57	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
58	#include "ResolvExpr/Resolver.h" // for resolve
59	#include "SymTab/Validate.h" // for validate
60	#include "SynTree/Declaration.h" // for Declaration
61	#include "SynTree/Visitor.h" // for acceptAll
62	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
63	#include "Virtual/ExpandCasts.h" // for expandCasts
64
65	using namespace std;
66
67
68	void NewPass(const char * const name) {
69	Stats::Heap::newPass(name);
70	using namespace Stats::Counters;
71	static auto pass_visitor_group = build<CounterGroup>("Pass Visitor");
72	auto pass = build<CounterGroup>(name, pass_visitor_group);
73	pass_visitor_stats.depth = 0;
74	pass_visitor_stats.avg = build<AverageCounter<double>>("Average Depth", pass);
75	pass_visitor_stats.max = build<MaxCounter<double>>("Max Depth", pass);
76	}
77
78	#define PASS(name, pass) \
79	if ( errorp ) { cerr << name << endl; } \
80	NewPass(name); \
81	Stats::Time::StartBlock(name); \
82	pass; \
83	Stats::Time::StopBlock();
84
85	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
86	TypedefTable typedefTable;
87	DeclarationNode * parseTree = nullptr; // program parse tree
88
89	std::string PreludeDirector = "";
90
91	static void parse_cmdline( int argc, char argv[], const char & filename );
92	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
93	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
94
95	static void backtrace( int start ) { // skip first N stack frames
96	enum { Frames = 50 };
97	void * array[Frames];
98	int size = ::backtrace( array, Frames );
99	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
100
101	*index( messages[0], '(' ) = '\0'; // find executable name
102	cerr << "Stack back trace for: " << messages[0] << endl;
103
104	// skip last 2 stack frames after main
105	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
106	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
107	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
108	if ( *p == '(' ) {
109	mangled_name = p;
110	} else if ( *p == '+' ) {
111	offset_begin = p;
112	} else if ( *p == ')' ) {
113	offset_end = p;
114	break;
115	} // if
116	} // for
117
118	// if line contains symbol, attempt to demangle
119	int frameNo = i - start;
120	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
121	*mangled_name++ = '\0'; // delimit strings
122	*offset_begin++ = '\0';
123	*offset_end++ = '\0';
124
125	int status;
126	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
127	// bug in __cxa_demangle for single-character lower-case non-mangled names
128	if ( status == 0 ) { // demangling successful ?
129	cerr << "(" << frameNo << ") " << messages[i] << " : "
130	<< real_name << "+" << offset_begin << offset_end << endl;
131	} else { // otherwise, output mangled name
132	cerr << "(" << frameNo << ") " << messages[i] << " : "
133	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
134	} // if
135
136	free( real_name );
137	} else { // otherwise, print the whole line
138	cerr << "(" << frameNo << ") " << messages[i] << endl;
139	} // if
140	} // for
141
142	free( messages );
143	} // backtrace
144
145	void sigSegvBusHandler( int sig_num ) {
146	cerr << "CFA runtime error program cfa-cpp terminated with "
147	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
148	<< "." << endl;
149	backtrace( 2 ); // skip first 2 stack frames
150	//_exit( EXIT_FAILURE );
151	abort();
152	} // sigSegvBusHandler
153
154	void sigAbortHandler( __attribute__((unused)) int sig_num ) {
155	backtrace( 6 ); // skip first 6 stack frames
156	signal( SIGABRT, SIG_DFL); // reset default signal handler
157	raise( SIGABRT ); // reraise SIGABRT
158	} // sigAbortHandler
159
160
161	int main( int argc, char * argv[] ) {
162	FILE * input; // use FILE rather than istream because yyin is FILE
163	ostream * output = & cout;
164	const char * filename = nullptr;
165	list< Declaration * > translationUnit;
166
167	signal( SIGSEGV, sigSegvBusHandler );
168	signal( SIGBUS, sigSegvBusHandler );
169	signal( SIGABRT, sigAbortHandler );
170
171	// std::cout << "main" << std::endl;
172	// for ( int i = 0; i < argc; i += 1 ) {
173	// std::cout << '\t' << argv[i] << std::endl;
174	// } // for
175
176	parse_cmdline( argc, argv, filename ); // process command-line arguments
177	CodeGen::FixMain::setReplaceMain( !nomainp );
178
179	try {
180	// choose to read the program from a file or stdin
181	if ( optind < argc ) { // any commands after the flags ? => input file name
182	input = fopen( argv[ optind ], "r" );
183	assertf( input, "cannot open %s\n", argv[ optind ] );
184	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
185	if ( filename == nullptr ) filename = argv[ optind ];
186	// prelude filename comes in differently
187	if ( libcfap ) filename = "prelude.cfa";
188	optind += 1;
189	} else { // no input file name
190	input = stdin;
191	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
192	// a fake name along
193	if ( filename == nullptr ) filename = "stdin";
194	} // if
195
196	NewPass("Parse");
197	Stats::Time::StartGlobal();
198
199	// read in the builtins, extras, and the prelude
200	if ( ! nopreludep ) { // include gcc builtins
201	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
202
203	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
204
205	// Read to gcc builtins, if not generating the cfa library
206	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
207	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
208	parse( gcc_builtins, LinkageSpec::Compiler );
209
210	// read the extra prelude in, if not generating the cfa library
211	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
212	assertf( extras, "cannot open extras.cf\n" );
213	parse( extras, LinkageSpec::BuiltinC );
214
215	if ( ! libcfap ) {
216	// read the prelude in, if not generating the cfa library
217	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
218	assertf( prelude, "cannot open prelude.cfa\n" );
219	parse( prelude, LinkageSpec::Intrinsic );
220
221	// Read to cfa builtins, if not generating the cfa library
222	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
223	assertf( builtins, "cannot open builtins.cf\n" );
224	parse( builtins, LinkageSpec::BuiltinCFA );
225	} // if
226	} // if
227
228	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
229
230	if ( parsep ) {
231	parseTree->printList( cout );
232	delete parseTree;
233	return 0;
234	} // if
235
236	buildList( parseTree, translationUnit );
237	delete parseTree;
238	parseTree = nullptr;
239
240	if ( astp ) {
241	dump( translationUnit );
242	return 0;
243	} // if
244
245	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
246	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
247	// works okay for now.
248	CodeTools::fillLocations( translationUnit );
249
250	// add the assignment statement after the initialization of a type parameter
251	PASS( "Validate", SymTab::validate( translationUnit, symtabp ) );
252	if ( symtabp ) {
253	deleteAll( translationUnit );
254	return 0;
255	} // if
256
257	if ( expraltp ) {
258	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
259	acceptAll( translationUnit, printer );
260	return 0;
261	} // if
262
263	if ( validp ) {
264	dump( translationUnit );
265	return 0;
266	} // if
267
268	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
269	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
270	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
271	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
272	if ( libcfap ) {
273	// generate the bodies of cfa library functions
274	LibCfa::makeLibCfa( translationUnit );
275	} // if
276
277	if ( declstatsp ) {
278	CodeTools::printDeclStats( translationUnit );
279	deleteAll( translationUnit );
280	return 0;
281	}
282
283	if ( bresolvep ) {
284	dump( translationUnit );
285	return 0;
286	} // if
287
288	CodeTools::fillLocations( translationUnit );
289
290	if ( resolvprotop ) {
291	CodeTools::dumpAsResolvProto( translationUnit );
292	return 0;
293	}
294
295	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
296	if ( exprp ) {
297	dump( translationUnit );
298	return 0;
299	} // if
300
301	// fix ObjectDecl - replaces ConstructorInit nodes
302	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
303	if ( ctorinitp ) {
304	dump ( translationUnit );
305	return 0;
306	} // if
307
308	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( translationUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
309
310	PASS( "Translate EHM" , ControlStruct::translateEHM( translationUnit ) );
311
312	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
313
314	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
315
316	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
317
318	if ( tuplep ) {
319	dump( translationUnit );
320	return 0;
321	}
322
323	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
324
325	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
326	if ( genericsp ) {
327	dump( translationUnit );
328	return 0;
329	}
330	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
331
332
333	if ( bboxp ) {
334	dump( translationUnit );
335	return 0;
336	} // if
337	PASS( "Box", GenPoly::box( translationUnit ) );
338
339	if ( bcodegenp ) {
340	dump( translationUnit );
341	return 0;
342	}
343
344	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
345	output = new ofstream( argv[ optind ] );
346	} // if
347
348	CodeTools::fillLocations( translationUnit );
349	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, linemarks ) );
350
351	CodeGen::FixMain::fix( *output, (PreludeDirector + "/bootloader.c").c_str() );
352	if ( output != &cout ) {
353	delete output;
354	} // if
355	} catch ( SemanticErrorException &e ) {
356	if ( errorp ) {
357	cerr << "---AST at error:---" << endl;
358	dump( translationUnit, cerr );
359	cerr << endl << "---End of AST, begin error message:---\n" << endl;
360	} // if
361	e.print();
362	if ( output != &cout ) {
363	delete output;
364	} // if
365	return 1;
366	} catch ( UnimplementedError &e ) {
367	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
368	if ( output != &cout ) {
369	delete output;
370	} // if
371	return 1;
372	} catch ( CompilerError &e ) {
373	cerr << "Compiler Error: " << e.get_what() << endl;
374	cerr << "(please report bugs to [REDACTED])" << endl;
375	if ( output != &cout ) {
376	delete output;
377	} // if
378	return 1;
379	} catch(...) {
380	std::exception_ptr eptr = std::current_exception();
381	try {
382	if (eptr) {
383	std::rethrow_exception(eptr);
384	}
385	else {
386	std::cerr << "Exception Uncaught and Unkown" << std::endl;
387	}
388	} catch(const std::exception& e) {
389	std::cerr << "Uncaught Exception \"" << e.what() << "\"\n";
390	}
391	return 1;
392	}// try
393
394	deleteAll( translationUnit );
395	Stats::print();
396
397	return 0;
398	} // main
399
400	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
401	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Linemarks, Nolinemarks, Nopreamble, Parse, PreludeDir, Prototypes, Resolver, ResolvProto, Stats, Symbol, Tree, TupleExpansion, Validate};
402
403	static struct option long_opts[] = {
404	{ "ast", no_argument, 0, Ast },
405	{ "before-box", no_argument, 0, Bbox },
406	{ "before-resolver", no_argument, 0, Bresolver },
407	{ "ctorinitfix", no_argument, 0, CtorInitFix },
408	{ "decl-stats", no_argument, 0, DeclStats },
409	{ "expr", no_argument, 0, Expr },
410	{ "expralt", no_argument, 0, ExprAlt },
411	{ "grammar", no_argument, 0, Grammar },
412	{ "libcfa", no_argument, 0, LibCFA },
413	{ "line-marks", no_argument, 0, Linemarks },
414	{ "no-line-marks", no_argument, 0, Nolinemarks },
415	{ "no-preamble", no_argument, 0, Nopreamble },
416	{ "parse", no_argument, 0, Parse },
417	{ "prelude-dir", required_argument, 0, PreludeDir },
418	{ "no-prototypes", no_argument, 0, Prototypes },
419	{ "resolver", no_argument, 0, Resolver },
420	{ "resolv-proto", no_argument, 0, ResolvProto },
421	{ "stats", required_argument, 0, Stats },
422	{ "symbol", no_argument, 0, Symbol },
423	{ "tree", no_argument, 0, Tree },
424	{ "tuple-expansion", no_argument, 0, TupleExpansion },
425	{ "validate", no_argument, 0, Validate },
426	{ 0, 0, 0, 0 }
427	}; // long_opts
428	int long_index;
429
430	opterr = 0; // (global) prevent getopt from printing error messages
431
432	bool Wsuppress = false, Werror = false;
433	int c;
434	while ( (c = getopt_long( argc, argv, "abBcCdefgGlLmnNpqrRstTvwW:yzZD:F:", long_opts, &long_index )) != -1 ) {
435	switch ( c ) {
436	case Ast:
437	case 'a': // dump AST
438	astp = true;
439	break;
440	case Bresolver:
441	case 'b': // print before resolver steps
442	bresolvep = true;
443	break;
444	case 'B': // print before box steps
445	bboxp = true;
446	break;
447	case CtorInitFix:
448	case 'c': // print after constructors and destructors are replaced
449	ctorinitp = true;
450	break;
451	case 'C': // print before code generation
452	bcodegenp = true;
453	break;
454	case DeclStats:
455	case 'd':
456	declstatsp = true;
457	break;
458	case Expr:
459	case 'e': // dump AST after expression analysis
460	exprp = true;
461	break;
462	case ExprAlt:
463	case 'f': // print alternatives for expressions
464	expraltp = true;
465	break;
466	case Grammar:
467	case 'g': // bison debugging info (grammar rules)
468	yydebug = true;
469	break;
470	case 'G': // dump AST after instantiate generics
471	genericsp = true;
472	break;
473	case LibCFA:
474	case 'l': // generate libcfa.c
475	libcfap = true;
476	break;
477	case Linemarks:
478	case 'L': // print lines marks
479	linemarks = true;
480	break;
481	case Nopreamble:
482	case 'n': // do not read preamble
483	nopreludep = true;
484	break;
485	case Nolinemarks:
486	case 'N': // suppress line marks
487	linemarks = false;
488	break;
489	case Prototypes:
490	case 'p': // generate prototypes for preamble functions
491	noprotop = true;
492	break;
493	case PreludeDir:
494	PreludeDirector = optarg;
495	break;
496	case 'm': // don't replace the main
497	nomainp = true;
498	break;
499	case Parse:
500	case 'q': // dump parse tree
501	parsep = true;
502	break;
503	case Resolver:
504	case 'r': // print resolver steps
505	resolvep = true;
506	break;
507	case 'R': // dump resolv-proto instance
508	resolvprotop = true;
509	break;
510	case Stats:
511	Stats::parse_params(optarg);
512	break;
513	case Symbol:
514	case 's': // print symbol table events
515	symtabp = true;
516	break;
517	case Tree:
518	case 't': // build in tree
519	treep = true;
520	break;
521	case TupleExpansion:
522	case 'T': // print after tuple expansion
523	tuplep = true;
524	break;
525	case 'v': // dump AST after decl validation pass
526	validp = true;
527	break;
528	case 'w':
529	Wsuppress = true;
530	break;
531	case 'W':
532	if ( strcmp( optarg, "all" ) == 0 ) {
533	SemanticWarning_EnableAll();
534	} else if ( strcmp( optarg, "error" ) == 0 ) {
535	Werror = true;
536	} else {
537	char * warning = optarg;
538	Severity s;
539	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
540	warning += 3;
541	s = Severity::Suppress;
542	} else {
543	s = Severity::Warn;
544	} // if
545	SemanticWarning_Set( warning, s );
546	} // if
547	break;
548	case 'y': // dump AST on error
549	errorp = true;
550	break;
551	case 'z': // dump as codegen rather than AST
552	codegenp = true;
553	break;
554	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
555	prettycodegenp = true;
556	break;
557	case 'D': // ignore -Dxxx
558	break;
559	case 'F': // source file-name without suffix
560	filename = optarg;
561	break;
562	case '?':
563	if ( optopt ) { // short option ?
564	assertf( false, "Unknown option: -%c\n", (char)optopt );
565	} else {
566	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
567	} // if
568	#if defined(__GNUC__) && __GNUC__ >= 7
569	__attribute__((fallthrough));
570	#endif
571	default:
572	abort();
573	} // switch
574	} // while
575
576	if ( Werror ) {
577	SemanticWarning_WarningAsError();
578	} // if
579	if ( Wsuppress ) {
580	SemanticWarning_SuppressAll();
581	} // if
582	// for ( const auto w : WarningFormats ) {
583	// cout << w.name << ' ' << (int)w.severity << endl;
584	// } // for
585	} // parse_cmdline
586
587	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
588	extern int yyparse( void );
589	extern FILE * yyin;
590	extern int yylineno;
591
592	::linkage = linkage; // set globals
593	yyin = input;
594	yylineno = 1;
595	int parseStatus = yyparse();
596
597	fclose( input );
598	if ( shouldExit \|\| parseStatus != 0 ) {
599	exit( parseStatus );
600	} // if
601	} // parse
602
603	static bool notPrelude( Declaration * decl ) {
604	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
605	} // notPrelude
606
607	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
608	list< Declaration * > decls;
609
610	if ( noprotop ) {
611	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
612	} else {
613	decls = translationUnit;
614	} // if
615
616	// depending on commandline options, either generate code or dump the AST
617	if ( codegenp ) {
618	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
619	} else {
620	printAll( decls, out );
621	}
622	deleteAll( translationUnit );
623	} // dump
624
625	// Local Variables: //
626	// tab-width: 4 //
627	// mode: c++ //
628	// compile-command: "make install" //
629	// End: //

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