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source: src/main.cc @ 9d5fb67

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumwith_gc

Last change on this file since 9d5fb67 was a16764a6, checked in by Thierry Delisle <tdelisle@…>, 7 years ago
Changed warning system to prepare for toggling warnings
Property mode set to `100644`
File size: 18.6 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 : Tue Oct 31 12:22:40 2017
14	// Update Count : 445
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/PassVisitor.h"
38	#include "Common/CompilerError.h" // for CompilerError
39	#include "Common/SemanticError.h" // for SemanticError
40	#include "Common/UnimplementedError.h" // for UnimplementedError
41	#include "Common/utility.h" // for deleteAll, filter, printAll
42	#include "Concurrency/Waitfor.h" // for generateWaitfor
43	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
44	#include "ControlStruct/Mutate.h" // for mutate
45	#include "GenPoly/Box.h" // for box
46	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
47	#include "GenPoly/Lvalue.h" // for convertLvalue
48	#include "GenPoly/Specialize.h" // for convertSpecializations
49	#include "InitTweak/FixInit.h" // for fix
50	#include "InitTweak/GenInit.h" // for genInit
51	#include "MakeLibCfa.h" // for makeLibCfa
52	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
53	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
54	#include "Parser/TypedefTable.h" // for TypedefTable
55	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
56	#include "ResolvExpr/Resolver.h" // for resolve
57	#include "SymTab/Validate.h" // for validate
58	#include "SynTree/Declaration.h" // for Declaration
59	#include "SynTree/Visitor.h" // for acceptAll
60	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
61	#include "Virtual/ExpandCasts.h" // for expandCasts
62
63	using namespace std;
64
65	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
66
67
68	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
69	TypedefTable typedefTable;
70	DeclarationNode * parseTree = nullptr; // program parse tree
71
72	extern int yydebug; // set for -g flag (Grammar)
73	bool
74	astp = false,
75	bresolvep = false,
76	bboxp = false,
77	bcodegenp = false,
78	ctorinitp = false,
79	declstatsp = false,
80	exprp = false,
81	expraltp = false,
82	genericsp = false,
83	libcfap = false,
84	nopreludep = false,
85	noprotop = false,
86	nomainp = false,
87	parsep = false,
88	resolvep = false, // used in AlternativeFinder
89	symtabp = false,
90	treep = false,
91	tuplep = false,
92	validp = false,
93	errorp = false,
94	codegenp = false,
95	prettycodegenp = false,
96	linemarks = false;
97
98	static void parse_cmdline( int argc, char argv[], const char & filename );
99	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
100	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
101
102	static void backtrace( int start ) { // skip first N stack frames
103	enum { Frames = 50 };
104	void * array[Frames];
105	int size = ::backtrace( array, Frames );
106	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
107
108	*index( messages[0], '(' ) = '\0'; // find executable name
109	cerr << "Stack back trace for: " << messages[0] << endl;
110
111	// skip last 2 stack frames after main
112	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
113	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
114	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
115	if ( *p == '(' ) {
116	mangled_name = p;
117	} else if ( *p == '+' ) {
118	offset_begin = p;
119	} else if ( *p == ')' ) {
120	offset_end = p;
121	break;
122	} // if
123	} // for
124
125	// if line contains symbol, attempt to demangle
126	int frameNo = i - start;
127	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
128	*mangled_name++ = '\0'; // delimit strings
129	*offset_begin++ = '\0';
130	*offset_end++ = '\0';
131
132	int status;
133	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
134	// bug in __cxa_demangle for single-character lower-case non-mangled names
135	if ( status == 0 ) { // demangling successful ?
136	cerr << "(" << frameNo << ") " << messages[i] << " : "
137	<< real_name << "+" << offset_begin << offset_end << endl;
138	} else { // otherwise, output mangled name
139	cerr << "(" << frameNo << ") " << messages[i] << " : "
140	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
141	} // if
142
143	free( real_name );
144	} else { // otherwise, print the whole line
145	cerr << "(" << frameNo << ") " << messages[i] << endl;
146	} // if
147	} // for
148
149	free( messages );
150	} // backtrace
151
152	void sigSegvBusHandler( int sig_num ) {
153	cerr << "CFA runtime error program cfa-cpp terminated with "
154	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
155	<< "." << endl;
156	backtrace( 2 ); // skip first 2 stack frames
157	exit( EXIT_FAILURE );
158	} // sigSegvBusHandler
159
160	void sigAbortHandler( __attribute__((unused)) int sig_num ) {
161	backtrace( 6 ); // skip first 6 stack frames
162	signal( SIGABRT, SIG_DFL); // reset default signal handler
163	raise( SIGABRT ); // reraise SIGABRT
164	} // sigAbortHandler
165
166
167	int main( int argc, char * argv[] ) {
168	FILE * input; // use FILE rather than istream because yyin is FILE
169	ostream *output = & cout;
170	const char *filename = nullptr;
171	list< Declaration * > translationUnit;
172
173	signal( SIGSEGV, sigSegvBusHandler );
174	signal( SIGBUS, sigSegvBusHandler );
175	signal( SIGABRT, sigAbortHandler );
176
177	parse_cmdline( argc, argv, filename ); // process command-line arguments
178	CodeGen::FixMain::setReplaceMain( !nomainp );
179
180	try {
181	// choose to read the program from a file or stdin
182	if ( optind < argc ) { // any commands after the flags ? => input file name
183	input = fopen( argv[ optind ], "r" );
184	assertf( input, "cannot open %s\n", argv[ optind ] );
185	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
186	if ( filename == nullptr ) filename = argv[ optind ];
187	// prelude filename comes in differently
188	if ( libcfap ) filename = "prelude.cf";
189	optind += 1;
190	} else { // no input file name
191	input = stdin;
192	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
193	// a fake name along
194	if ( filename == nullptr ) filename = "stdin";
195	} // if
196
197	// read in the builtins, extras, and the prelude
198	if ( ! nopreludep ) { // include gcc builtins
199	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
200
201	// Read to gcc builtins, if not generating the cfa library
202	FILE * gcc_builtins = fopen( libcfap \| treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
203	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
204	parse( gcc_builtins, LinkageSpec::Compiler );
205
206	// read the extra prelude in, if not generating the cfa library
207	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
208	assertf( extras, "cannot open extras.cf\n" );
209	parse( extras, LinkageSpec::BuiltinC );
210
211	if ( ! libcfap ) {
212	// read the prelude in, if not generating the cfa library
213	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
214	assertf( prelude, "cannot open prelude.cf\n" );
215	parse( prelude, LinkageSpec::Intrinsic );
216
217	// Read to cfa builtins, if not generating the cfa library
218	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
219	assertf( builtins, "cannot open builtins.cf\n" );
220	parse( builtins, LinkageSpec::BuiltinCFA );
221	} // if
222	} // if
223
224	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
225
226	if ( parsep ) {
227	parseTree->printList( cout );
228	delete parseTree;
229	return 0;
230	} // if
231
232	buildList( parseTree, translationUnit );
233	delete parseTree;
234	parseTree = nullptr;
235
236	if ( astp ) {
237	dump( translationUnit );
238	return 0;
239	} // if
240
241	// add the assignment statement after the initialization of a type parameter
242	OPTPRINT( "validate" )
243	SymTab::validate( translationUnit, symtabp );
244	if ( symtabp ) {
245	deleteAll( translationUnit );
246	return 0;
247	} // if
248
249	if ( expraltp ) {
250	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
251	acceptAll( translationUnit, printer );
252	return 0;
253	} // if
254
255	if ( validp ) {
256	dump( translationUnit );
257	return 0;
258	} // if
259
260	OPTPRINT( "mutate" )
261	ControlStruct::mutate( translationUnit );
262	OPTPRINT( "fixNames" )
263	CodeGen::fixNames( translationUnit );
264	OPTPRINT( "genInit" )
265	InitTweak::genInit( translationUnit );
266	OPTPRINT( "expandMemberTuples" );
267	Tuples::expandMemberTuples( 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	deleteAll( translationUnit );
276	return 0;
277	}
278
279	if ( bresolvep ) {
280	dump( translationUnit );
281	return 0;
282	} // if
283
284	CodeTools::fillLocations( translationUnit );
285
286	OPTPRINT( "resolve" )
287	ResolvExpr::resolve( translationUnit );
288	if ( exprp ) {
289	dump( translationUnit );
290	return 0;
291	} // if
292
293	// fix ObjectDecl - replaces ConstructorInit nodes
294	OPTPRINT( "fixInit" )
295	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
296	if ( ctorinitp ) {
297	dump ( translationUnit );
298	return 0;
299	} // if
300
301	OPTPRINT( "expandUniqueExpr" ); // xxx - is this the right place for this? want to expand ASAP so that subsequent 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
302	Tuples::expandUniqueExpr( translationUnit );
303
304	OPTPRINT( "translateEHM" );
305	ControlStruct::translateEHM( translationUnit );
306
307	OPTPRINT( "generateWaitfor" );
308	Concurrency::generateWaitFor( translationUnit );
309
310	OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
311	GenPoly::convertSpecializations( translationUnit );
312
313	OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
314	Tuples::expandTuples( translationUnit );
315	if ( tuplep ) {
316	dump( translationUnit );
317	return 0;
318	}
319
320	OPTPRINT( "virtual expandCasts" ) // Must come after translateEHM
321	Virtual::expandCasts( translationUnit );
322
323	OPTPRINT("instantiateGenerics")
324	GenPoly::instantiateGeneric( translationUnit );
325	if ( genericsp ) {
326	dump( translationUnit );
327	return 0;
328	}
329	OPTPRINT( "convertLvalue" )
330	GenPoly::convertLvalue( translationUnit );
331
332
333	if ( bboxp ) {
334	dump( translationUnit );
335	return 0;
336	} // if
337	OPTPRINT( "box" )
338	GenPoly::box( translationUnit );
339
340	if ( bcodegenp ) {
341	dump( translationUnit );
342	return 0;
343	}
344
345	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
346	output = new ofstream( argv[ optind ] );
347	} // if
348
349	CodeTools::fillLocations( translationUnit );
350	OPTPRINT( "codegen" )
351	CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, linemarks );
352
353	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
354	OPTPRINT( "end" )
355
356	if ( output != &cout ) {
357	delete output;
358	} // if
359	} catch ( SemanticErrorException &e ) {
360	if ( errorp ) {
361	cerr << "---AST at error:---" << endl;
362	dump( translationUnit, cerr );
363	cerr << endl << "---End of AST, begin error message:---\n" << endl;
364	} // if
365	e.print();
366	if ( output != &cout ) {
367	delete output;
368	} // if
369	return 1;
370	} catch ( UnimplementedError &e ) {
371	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
372	if ( output != &cout ) {
373	delete output;
374	} // if
375	return 1;
376	} catch ( CompilerError &e ) {
377	cerr << "Compiler Error: " << e.get_what() << endl;
378	cerr << "(please report bugs to [REDACTED])" << endl;
379	if ( output != &cout ) {
380	delete output;
381	} // if
382	return 1;
383	} // try
384
385	deleteAll( translationUnit );
386	return 0;
387	} // main
388
389	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
390	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Linemarks, Nolinemarks, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
391
392	static struct option long_opts[] = {
393	{ "ast", no_argument, 0, Ast },
394	{ "before-box", no_argument, 0, Bbox },
395	{ "before-resolver", no_argument, 0, Bresolver },
396	{ "ctorinitfix", no_argument, 0, CtorInitFix },
397	{ "decl-stats", no_argument, 0, DeclStats },
398	{ "expr", no_argument, 0, Expr },
399	{ "expralt", no_argument, 0, ExprAlt },
400	{ "grammar", no_argument, 0, Grammar },
401	{ "libcfa", no_argument, 0, LibCFA },
402	{ "line-marks", no_argument, 0, Linemarks },
403	{ "no-line-marks", no_argument, 0, Nolinemarks },
404	{ "no-preamble", no_argument, 0, Nopreamble },
405	{ "parse", no_argument, 0, Parse },
406	{ "no-prototypes", no_argument, 0, Prototypes },
407	{ "resolver", no_argument, 0, Resolver },
408	{ "symbol", no_argument, 0, Symbol },
409	{ "tree", no_argument, 0, Tree },
410	{ "tuple-expansion", no_argument, 0, TupleExpansion },
411	{ "validate", no_argument, 0, Validate },
412	{ 0, 0, 0, 0 }
413	}; // long_opts
414	int long_index;
415
416	opterr = 0; // (global) prevent getopt from printing error messages
417
418	int c;
419	while ( (c = getopt_long( argc, argv, "abBcCdefgGlLmnNpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
420	switch ( c ) {
421	case Ast:
422	case 'a': // dump AST
423	astp = true;
424	break;
425	case Bresolver:
426	case 'b': // print before resolver steps
427	bresolvep = true;
428	break;
429	case 'B': // print before box steps
430	bboxp = true;
431	break;
432	case CtorInitFix:
433	case 'c': // print after constructors and destructors are replaced
434	ctorinitp = true;
435	break;
436	case 'C': // print before code generation
437	bcodegenp = true;
438	break;
439	case DeclStats:
440	case 'd':
441	declstatsp = true;
442	break;
443	case Expr:
444	case 'e': // dump AST after expression analysis
445	exprp = true;
446	break;
447	case ExprAlt:
448	case 'f': // print alternatives for expressions
449	expraltp = true;
450	break;
451	case Grammar:
452	case 'g': // bison debugging info (grammar rules)
453	yydebug = true;
454	break;
455	case 'G': // dump AST after instantiate generics
456	genericsp = true;
457	break;
458	case LibCFA:
459	case 'l': // generate libcfa.c
460	libcfap = true;
461	break;
462	case Linemarks:
463	case 'L': // print lines marks
464	linemarks = true;
465	break;
466	case Nopreamble:
467	case 'n': // do not read preamble
468	nopreludep = true;
469	break;
470	case Nolinemarks:
471	case 'N': // suppress line marks
472	linemarks = false;
473	break;
474	case Prototypes:
475	case 'p': // generate prototypes for preamble functions
476	noprotop = true;
477	break;
478	case 'm': // don't replace the main
479	nomainp = true;
480	break;
481	case Parse:
482	case 'q': // dump parse tree
483	parsep = true;
484	break;
485	case Resolver:
486	case 'r': // print resolver steps
487	resolvep = true;
488	break;
489	case Symbol:
490	case 's': // print symbol table events
491	symtabp = true;
492	break;
493	case Tree:
494	case 't': // build in tree
495	treep = true;
496	break;
497	case TupleExpansion:
498	case 'T': // print after tuple expansion
499	tuplep = true;
500	break;
501	case 'v': // dump AST after decl validation pass
502	validp = true;
503	break;
504	case 'y': // dump AST on error
505	errorp = true;
506	break;
507	case 'z': // dump as codegen rather than AST
508	codegenp = true;
509	break;
510	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
511	prettycodegenp = true;
512	break;
513	case 'D': // ignore -Dxxx
514	break;
515	case 'F': // source file-name without suffix
516	filename = optarg;
517	break;
518	case '?':
519	if ( optopt ) { // short option ?
520	assertf( false, "Unknown option: -%c\n", (char)optopt );
521	} else {
522	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
523	} // if
524	#if __GNUC__ < 7
525	#else
526	__attribute__((fallthrough));
527	#endif
528	default:
529	abort();
530	} // switch
531	} // while
532	} // parse_cmdline
533
534	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
535	extern int yyparse( void );
536	extern FILE * yyin;
537	extern int yylineno;
538
539	::linkage = linkage; // set globals
540	yyin = input;
541	yylineno = 1;
542	typedefTable.enterScope();
543	int parseStatus = yyparse();
544
545	fclose( input );
546	if ( shouldExit \|\| parseStatus != 0 ) {
547	exit( parseStatus );
548	} // if
549	} // parse
550
551	static bool notPrelude( Declaration * decl ) {
552	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
553	} // notPrelude
554
555	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
556	list< Declaration * > decls;
557
558	if ( noprotop ) {
559	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
560	} else {
561	decls = translationUnit;
562	} // if
563
564	// depending on commandline options, either generate code or dump the AST
565	if ( codegenp ) {
566	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
567	} else {
568	printAll( decls, out );
569	}
570	deleteAll( translationUnit );
571	} // dump
572
573	// Local Variables: //
574	// tab-width: 4 //
575	// mode: c++ //
576	// compile-command: "make install" //
577	// End: //

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