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source: src/main.cc @ ebcc940

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

Last change on this file since ebcc940 was ebcc940, checked in by tdelisle <tdelisle@…>, 5 years ago
Added --stats flag to enable statistics
Property mode set to `100644`
File size: 20.6 KB

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

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