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source: src/main.cc @ eba74ba

new-envwith_gc

Last change on this file since eba74ba was eba74ba, checked in by Aaron Moss <a3moss@…>, 6 years ago
Merge remote-tracking branch 'origin/master' into with_gc
Property mode set to `100644`
File size: 19.9 KB

Line
1
2	//
3	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
4	//
5	// The contents of this file are covered under the licence agreement in the
6	// file "LICENCE" distributed with Cforall.
7	//
8	// main.cc --
9	//
10	// Author : Richard C. Bilson
11	// Created On : Fri May 15 23:12:02 2015
12	// Last Modified By : Peter A. Buhr
13	// Last Modified On : Mon May 7 14:35:57 2018
14	// Update Count : 492
15	//
16
17	#include <cxxabi.h> // for __cxa_demangle
18	#include <execinfo.h> // for backtrace, backtrace_symbols
19	#include <getopt.h> // for no_argument, optind, geto...
20	#include <signal.h> // for signal, SIGABRT, SIGSEGV
21	#include <cassert> // for assertf
22	#include <cstdio> // for fopen, FILE, fclose, stdin
23	#include <cstdlib> // for exit, free, abort, EXIT_F...
24	#include <cstring> // for index
25	#include <fstream> // for ofstream
26	#include <iostream> // for operator<<, basic_ostream
27	#include <iterator> // for back_inserter
28	#include <list> // for list
29	#include <string> // for char_traits, operator<<
30
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/TrackLoc.h" // for fillLocations
37	#include "Common/CompilerError.h" // for CompilerError
38	#include "Common/GC.h" // for GC
39	#include "Common/Heap.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/GcTracer.h" // for GC << TranslationUnit
62	#include "SynTree/Visitor.h" // for acceptAll
63	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
64	#include "Virtual/ExpandCasts.h" // for expandCasts
65
66	using namespace std;
67
68	#define PASS(name, pass) \
69	if ( errorp ) { cerr << name << endl; } \
70	HeapStats::newPass(name); \
71	pass;
72
73	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
74	TypedefTable typedefTable;
75	DeclarationNode * parseTree = nullptr; // program parse tree
76
77	extern int yydebug; // set for -g flag (Grammar)
78	bool
79	astp = false,
80	bresolvep = false,
81	bboxp = false,
82	bcodegenp = false,
83	ctorinitp = false,
84	declstatsp = false,
85	exprp = false,
86	expraltp = false,
87	genericsp = false,
88	libcfap = false,
89	nopreludep = false,
90	noprotop = false,
91	nomainp = false,
92	parsep = false,
93	resolvep = false, // used in AlternativeFinder
94	symtabp = false,
95	treep = false,
96	tuplep = false,
97	validp = false,
98	errorp = false,
99	codegenp = false,
100	prettycodegenp = false,
101	linemarks = false;
102
103	static void parse_cmdline( int argc, char argv[], const char & filename );
104	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
105	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
106
107	static void backtrace( int start ) { // skip first N stack frames
108	enum { Frames = 50 };
109	void * array[Frames];
110	int size = ::backtrace( array, Frames );
111	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
112
113	*index( messages[0], '(' ) = '\0'; // find executable name
114	cerr << "Stack back trace for: " << messages[0] << endl;
115
116	// skip last 2 stack frames after main
117	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
118	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
119	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
120	if ( *p == '(' ) {
121	mangled_name = p;
122	} else if ( *p == '+' ) {
123	offset_begin = p;
124	} else if ( *p == ')' ) {
125	offset_end = p;
126	break;
127	} // if
128	} // for
129
130	// if line contains symbol, attempt to demangle
131	int frameNo = i - start;
132	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
133	*mangled_name++ = '\0'; // delimit strings
134	*offset_begin++ = '\0';
135	*offset_end++ = '\0';
136
137	int status;
138	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
139	// bug in __cxa_demangle for single-character lower-case non-mangled names
140	if ( status == 0 ) { // demangling successful ?
141	cerr << "(" << frameNo << ") " << messages[i] << " : "
142	<< real_name << "+" << offset_begin << offset_end << endl;
143	} else { // otherwise, output mangled name
144	cerr << "(" << frameNo << ") " << messages[i] << " : "
145	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
146	} // if
147
148	free( real_name );
149	} else { // otherwise, print the whole line
150	cerr << "(" << frameNo << ") " << messages[i] << endl;
151	} // if
152	} // for
153
154	free( messages );
155	} // backtrace
156
157	void sigSegvBusHandler( int sig_num ) {
158	cerr << "CFA runtime error program cfa-cpp terminated with "
159	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
160	<< "." << endl;
161	backtrace( 2 ); // skip first 2 stack frames
162	exit( EXIT_FAILURE );
163	} // sigSegvBusHandler
164
165	void sigAbortHandler( __attribute__((unused)) int sig_num ) {
166	backtrace( 6 ); // skip first 6 stack frames
167	signal( SIGABRT, SIG_DFL); // reset default signal handler
168	raise( SIGABRT ); // reraise SIGABRT
169	} // sigAbortHandler
170
171
172	int main( int argc, char * argv[] ) {
173	FILE * input; // use FILE rather than istream because yyin is FILE
174	ostream *output = & cout;
175	const char *filename = nullptr;
176	list< Declaration * > translationUnit;
177
178	signal( SIGSEGV, sigSegvBusHandler );
179	signal( SIGBUS, sigSegvBusHandler );
180	signal( SIGABRT, sigAbortHandler );
181
182	parse_cmdline( argc, argv, filename ); // process command-line arguments
183	CodeGen::FixMain::setReplaceMain( !nomainp );
184
185	try {
186	// choose to read the program from a file or stdin
187	if ( optind < argc ) { // any commands after the flags ? => input file name
188	input = fopen( argv[ optind ], "r" );
189	assertf( input, "cannot open %s\n", argv[ optind ] );
190	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
191	if ( filename == nullptr ) filename = argv[ optind ];
192	// prelude filename comes in differently
193	if ( libcfap ) filename = "prelude.cf";
194	optind += 1;
195	} else { // no input file name
196	input = stdin;
197	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
198	// a fake name along
199	if ( filename == nullptr ) filename = "stdin";
200	} // if
201
202	// read in the builtins, extras, and the prelude
203	if ( ! nopreludep ) { // include gcc builtins
204	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
205
206	// Read to gcc builtins, if not generating the cfa library
207	FILE * gcc_builtins = fopen( libcfap \| treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
208	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
209	parse( gcc_builtins, LinkageSpec::Compiler );
210
211	// read the extra prelude in, if not generating the cfa library
212	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
213	assertf( extras, "cannot open extras.cf\n" );
214	parse( extras, LinkageSpec::BuiltinC );
215
216	if ( ! libcfap ) {
217	// read the prelude in, if not generating the cfa library
218	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
219	assertf( prelude, "cannot open prelude.cf\n" );
220	parse( prelude, LinkageSpec::Intrinsic );
221
222	// Read to cfa builtins, if not generating the cfa library
223	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
224	assertf( builtins, "cannot open builtins.cf\n" );
225	parse( builtins, LinkageSpec::BuiltinCFA );
226	} // if
227	} // if
228
229	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
230
231	if ( parsep ) {
232	parseTree->printList( cout );
233	delete parseTree;
234	return 0;
235	} // if
236
237	buildList( parseTree, translationUnit );
238	delete parseTree;
239	parseTree = nullptr;
240	collect( translationUnit );
241
242	if ( astp ) {
243	dump( translationUnit );
244	return 0;
245	} // if
246
247	// add the assignment statement after the initialization of a type parameter
248	PASS( "validate", SymTab::validate( translationUnit, symtabp ) );
249	if ( symtabp ) return 0;
250	collect( translationUnit );
251
252	if ( expraltp ) {
253	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
254	acceptAll( translationUnit, printer );
255	return 0;
256	} // if
257
258	if ( validp ) {
259	dump( translationUnit );
260	return 0;
261	} // if
262
263	PASS( "mutate", ControlStruct::mutate( translationUnit ) );
264	PASS( "fixNames", CodeGen::fixNames( translationUnit ) );
265	PASS( "genInit", InitTweak::genInit( translationUnit ) );
266	PASS( "expandMemberTuples" , Tuples::expandMemberTuples( translationUnit ) );
267	collect( translationUnit );
268	if ( libcfap ) {
269	// generate the bodies of cfa library functions
270	LibCfa::makeLibCfa( translationUnit );
271	} // if
272
273	if ( declstatsp ) {
274	CodeTools::printDeclStats( translationUnit );
275	return 0;
276	}
277
278	if ( bresolvep ) {
279	dump( translationUnit );
280	return 0;
281	} // if
282
283	CodeTools::fillLocations( translationUnit );
284
285	PASS( "resolve", ResolvExpr::resolve( translationUnit ) );
286	collect( translationUnit );
287	if ( exprp ) {
288	dump( translationUnit );
289	return 0;
290	} // if
291
292	// fix ObjectDecl - replaces ConstructorInit nodes
293	PASS( "fixInit", InitTweak::fix( translationUnit, filename, libcfap \|\| treep ) );
294	collect( translationUnit );
295	if ( ctorinitp ) {
296	dump ( translationUnit );
297	return 0;
298	} // if
299
300	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
301
302	PASS( "translateEHM" , ControlStruct::translateEHM( translationUnit ) );
303
304	PASS( "generateWaitfor" , Concurrency::generateWaitFor( translationUnit ) );
305
306	PASS( "convertSpecializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
307
308	PASS( "expandTuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
309	collect( translationUnit );
310	if ( tuplep ) {
311	dump( translationUnit );
312	return 0;
313	}
314
315	PASS( "virtual expandCasts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
316
317	PASS( "instantiateGenerics", GenPoly::instantiateGeneric( translationUnit ) );
318	collect( translationUnit );
319	if ( genericsp ) {
320	dump( translationUnit );
321	return 0;
322	}
323	PASS( "convertLvalue", GenPoly::convertLvalue( translationUnit ) );
324	collect( translationUnit );
325	if ( bboxp ) {
326	dump( translationUnit );
327	return 0;
328	} // if
329	PASS( "box", GenPoly::box( translationUnit ) );
330	collect( translationUnit );
331	if ( bcodegenp ) {
332	dump( translationUnit );
333	return 0;
334	}
335
336	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
337	output = new ofstream( argv[ optind ] );
338	} // if
339
340	CodeTools::fillLocations( translationUnit );
341	PASS( "codegen", CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, linemarks ) );
342
343	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
344	if ( output != &cout ) {
345	delete output;
346	} // if
347	} catch ( SemanticErrorException &e ) {
348	if ( errorp ) {
349	cerr << "---AST at error:---" << endl;
350	dump( translationUnit, cerr );
351	cerr << endl << "---End of AST, begin error message:---\n" << endl;
352	} // if
353	e.print();
354	if ( output != &cout ) {
355	delete output;
356	} // if
357	return 1;
358	} catch ( UnimplementedError &e ) {
359	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
360	if ( output != &cout ) {
361	delete output;
362	} // if
363	return 1;
364	} catch ( CompilerError &e ) {
365	cerr << "Compiler Error: " << e.get_what() << endl;
366	cerr << "(please report bugs to [REDACTED])" << endl;
367	if ( output != &cout ) {
368	delete output;
369	} // if
370	return 1;
371	} catch(...) {
372	std::exception_ptr eptr = std::current_exception();
373	try {
374	if (eptr) {
375	std::rethrow_exception(eptr);
376	}
377	else {
378	std::cerr << "Exception Uncaught and Unkown" << std::endl;
379	}
380	} catch(const std::exception& e) {
381	std::cerr << "Unaught Exception \"" << e.what() << "\"\n";
382	}
383	return 1;
384	}// try
385
386	if(!libcfap && !treep) HeapStats::printStats();
387	return 0;
388	} // main
389
390	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
391	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Linemarks, Nolinemarks, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
392
393	static struct option long_opts[] = {
394	{ "ast", no_argument, 0, Ast },
395	{ "before-box", no_argument, 0, Bbox },
396	{ "before-resolver", no_argument, 0, Bresolver },
397	{ "ctorinitfix", no_argument, 0, CtorInitFix },
398	{ "decl-stats", no_argument, 0, DeclStats },
399	{ "expr", no_argument, 0, Expr },
400	{ "expralt", no_argument, 0, ExprAlt },
401	{ "grammar", no_argument, 0, Grammar },
402	{ "libcfa", no_argument, 0, LibCFA },
403	{ "line-marks", no_argument, 0, Linemarks },
404	{ "no-line-marks", no_argument, 0, Nolinemarks },
405	{ "no-preamble", no_argument, 0, Nopreamble },
406	{ "parse", no_argument, 0, Parse },
407	{ "no-prototypes", no_argument, 0, Prototypes },
408	{ "resolver", no_argument, 0, Resolver },
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, "abBcCdefgGlLmnNpqrstTvwW: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 'm': // don't replace the main
481	nomainp = true;
482	break;
483	case Parse:
484	case 'q': // dump parse tree
485	parsep = true;
486	break;
487	case Resolver:
488	case 'r': // print resolver steps
489	resolvep = true;
490	break;
491	case Symbol:
492	case 's': // print symbol table events
493	symtabp = true;
494	break;
495	case Tree:
496	case 't': // build in tree
497	treep = true;
498	break;
499	case TupleExpansion:
500	case 'T': // print after tuple expansion
501	tuplep = true;
502	break;
503	case 'v': // dump AST after decl validation pass
504	validp = true;
505	break;
506	case 'w':
507	Wsuppress = true;
508	break;
509	case 'W':
510	if ( strcmp( optarg, "all" ) == 0 ) {
511	SemanticWarning_EnableAll();
512	} else if ( strcmp( optarg, "error" ) == 0 ) {
513	Werror = true;
514	} else {
515	char * warning = optarg;
516	Severity s;
517	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
518	warning += 3;
519	s = Severity::Suppress;
520	} else {
521	s = Severity::Warn;
522	} // if
523	SemanticWarning_Set( warning, s );
524	} // if
525	break;
526	case 'y': // dump AST on error
527	errorp = true;
528	break;
529	case 'z': // dump as codegen rather than AST
530	codegenp = true;
531	break;
532	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
533	prettycodegenp = true;
534	break;
535	case 'D': // ignore -Dxxx
536	break;
537	case 'F': // source file-name without suffix
538	filename = optarg;
539	break;
540	case '?':
541	if ( optopt ) { // short option ?
542	assertf( false, "Unknown option: -%c\n", (char)optopt );
543	} else {
544	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
545	} // if
546	#if defined(__GNUC__) && __GNUC__ >= 7
547	__attribute__((fallthrough));
548	#endif
549	default:
550	abort();
551	} // switch
552	} // while
553
554	if ( Werror ) {
555	SemanticWarning_WarningAsError();
556	} // if
557	if ( Wsuppress ) {
558	SemanticWarning_SuppressAll();
559	} // if
560	// for ( const auto w : WarningFormats ) {
561	// cout << w.name << ' ' << (int)w.severity << endl;
562	// } // for
563	} // parse_cmdline
564
565	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
566	extern int yyparse( void );
567	extern FILE * yyin;
568	extern int yylineno;
569
570	::linkage = linkage; // set globals
571	yyin = input;
572	yylineno = 1;
573	typedefTable.enterScope();
574	int parseStatus = yyparse();
575
576	fclose( input );
577	if ( shouldExit \|\| parseStatus != 0 ) {
578	exit( parseStatus );
579	} // if
580	} // parse
581
582	static bool notPrelude( Declaration * decl ) {
583	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
584	} // notPrelude
585
586	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
587	list< Declaration * > decls;
588
589	if ( noprotop ) {
590	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
591	} else {
592	decls = translationUnit;
593	} // if
594
595	// depending on commandline options, either generate code or dump the AST
596	if ( codegenp ) {
597	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
598	} else {
599	printAll( decls, out );
600	}
601	} // dump
602
603	// Local Variables: //
604	// tab-width: 4 //
605	// mode: c++ //
606	// compile-command: "make install" //
607	// End: //

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