2 * Copyright 2011 Leiden University. All rights reserved.
3 * Copyright 2012-2014 Ecole Normale Superieure. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials provided
15 * with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY LEIDEN UNIVERSITY ''AS IS'' AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LEIDEN UNIVERSITY OR
21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
24 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * The views and conclusions contained in the software and documentation
30 * are those of the authors and should not be interpreted as
31 * representing official policies, either expressed or implied, of
41 #include <llvm/Support/raw_ostream.h>
42 #include <llvm/Support/ManagedStatic.h>
43 #include <llvm/Support/Host.h>
44 #include <clang/Basic/Version.h>
45 #include <clang/Basic/FileSystemOptions.h>
46 #include <clang/Basic/FileManager.h>
47 #include <clang/Basic/TargetOptions.h>
48 #include <clang/Basic/TargetInfo.h>
49 #include <clang/Driver/Compilation.h>
50 #include <clang/Driver/Driver.h>
51 #include <clang/Driver/Tool.h>
52 #include <clang/Frontend/CompilerInstance.h>
53 #include <clang/Frontend/CompilerInvocation.h>
54 #ifdef HAVE_BASIC_DIAGNOSTICOPTIONS_H
55 #include <clang/Basic/DiagnosticOptions.h>
57 #include <clang/Frontend/DiagnosticOptions.h>
59 #include <clang/Frontend/TextDiagnosticPrinter.h>
60 #ifdef HAVE_LEX_HEADERSEARCHOPTIONS_H
61 #include <clang/Lex/HeaderSearchOptions.h>
63 #include <clang/Frontend/HeaderSearchOptions.h>
65 #include <clang/Frontend/LangStandard.h>
66 #ifdef HAVE_LEX_PREPROCESSOROPTIONS_H
67 #include <clang/Lex/PreprocessorOptions.h>
69 #include <clang/Frontend/PreprocessorOptions.h>
71 #include <clang/Frontend/FrontendOptions.h>
72 #include <clang/Frontend/Utils.h>
73 #include <clang/Lex/HeaderSearch.h>
74 #include <clang/Lex/Preprocessor.h>
75 #include <clang/Lex/Pragma.h>
76 #include <clang/AST/ASTContext.h>
77 #include <clang/AST/ASTConsumer.h>
78 #include <clang/Sema/Sema.h>
79 #include <clang/Sema/SemaDiagnostic.h>
80 #include <clang/Parse/Parser.h>
81 #include <clang/Parse/ParseAST.h>
84 #include <isl/constraint.h>
92 #define ARRAY_SIZE(array) (sizeof(array)/sizeof(*array))
95 using namespace clang
;
96 using namespace clang::driver
;
98 /* Called if we found something we didn't expect in one of the pragmas.
99 * We'll provide more informative warnings later.
101 static void unsupported(Preprocessor
&PP
, SourceLocation loc
)
103 DiagnosticsEngine
&diag
= PP
.getDiagnostics();
104 unsigned id
= diag
.getCustomDiagID(DiagnosticsEngine::Warning
,
106 DiagnosticBuilder B
= diag
.Report(loc
, id
);
109 static int get_int(const char *s
)
111 return s
[0] == '"' ? atoi(s
+ 1) : atoi(s
);
114 static ValueDecl
*get_value_decl(Sema
&sema
, Token
&token
)
116 IdentifierInfo
*name
;
119 if (token
.isNot(tok::identifier
))
122 name
= token
.getIdentifierInfo();
123 decl
= sema
.LookupSingleName(sema
.TUScope
, name
,
124 token
.getLocation(), Sema::LookupOrdinaryName
);
125 return decl
? cast_or_null
<ValueDecl
>(decl
) : NULL
;
128 /* Handle pragmas of the form
130 * #pragma value_bounds identifier lower_bound upper_bound
132 * For each such pragma, add a mapping
133 * { identifier[] -> [i] : lower_bound <= i <= upper_bound }
136 struct PragmaValueBoundsHandler
: public PragmaHandler
{
139 isl_union_map
*value_bounds
;
141 PragmaValueBoundsHandler(isl_ctx
*ctx
, Sema
&sema
) :
142 PragmaHandler("value_bounds"), ctx(ctx
), sema(sema
) {
143 isl_space
*space
= isl_space_params_alloc(ctx
, 0);
144 value_bounds
= isl_union_map_empty(space
);
147 ~PragmaValueBoundsHandler() {
148 isl_union_map_free(value_bounds
);
151 virtual void HandlePragma(Preprocessor
&PP
,
152 PragmaIntroducerKind Introducer
,
163 vd
= get_value_decl(sema
, token
);
165 unsupported(PP
, token
.getLocation());
170 if (!token
.isLiteral()) {
171 unsupported(PP
, token
.getLocation());
175 lb
= get_int(token
.getLiteralData());
178 if (!token
.isLiteral()) {
179 unsupported(PP
, token
.getLocation());
183 ub
= get_int(token
.getLiteralData());
185 dim
= isl_space_alloc(ctx
, 0, 0, 1);
186 map
= isl_map_universe(dim
);
187 map
= isl_map_lower_bound_si(map
, isl_dim_out
, 0, lb
);
188 map
= isl_map_upper_bound_si(map
, isl_dim_out
, 0, ub
);
189 id
= isl_id_alloc(ctx
, vd
->getName().str().c_str(), vd
);
190 map
= isl_map_set_tuple_id(map
, isl_dim_in
, id
);
192 value_bounds
= isl_union_map_add_map(value_bounds
, map
);
196 /* Given a variable declaration, check if it has an integer initializer
197 * and if so, add a parameter corresponding to the variable to "value"
198 * with its value fixed to the integer initializer and return the result.
200 static __isl_give isl_set
*extract_initialization(__isl_take isl_set
*value
,
212 vd
= cast
<VarDecl
>(decl
);
215 if (!vd
->getType()->isIntegerType())
217 expr
= vd
->getInit();
220 il
= cast
<IntegerLiteral
>(expr
);
224 ctx
= isl_set_get_ctx(value
);
225 id
= isl_id_alloc(ctx
, vd
->getName().str().c_str(), vd
);
226 space
= isl_space_params_alloc(ctx
, 1);
227 space
= isl_space_set_dim_id(space
, isl_dim_param
, 0, id
);
228 set
= isl_set_universe(space
);
230 v
= PetScan::extract_int(ctx
, il
);
231 set
= isl_set_fix_val(set
, isl_dim_param
, 0, v
);
233 return isl_set_intersect(value
, set
);
236 /* Handle pragmas of the form
238 * #pragma parameter identifier lower_bound
240 * #pragma parameter identifier lower_bound upper_bound
242 * For each such pragma, intersect the context with the set
243 * [identifier] -> { [] : lower_bound <= identifier <= upper_bound }
245 struct PragmaParameterHandler
: public PragmaHandler
{
248 isl_set
*&context_value
;
250 PragmaParameterHandler(Sema
&sema
, isl_set
*&context
,
251 isl_set
*&context_value
) :
252 PragmaHandler("parameter"), sema(sema
), context(context
),
253 context_value(context_value
) {}
255 virtual void HandlePragma(Preprocessor
&PP
,
256 PragmaIntroducerKind Introducer
,
259 isl_ctx
*ctx
= isl_set_get_ctx(context
);
269 vd
= get_value_decl(sema
, token
);
271 unsupported(PP
, token
.getLocation());
276 if (!token
.isLiteral()) {
277 unsupported(PP
, token
.getLocation());
281 lb
= get_int(token
.getLiteralData());
284 if (token
.isLiteral()) {
286 ub
= get_int(token
.getLiteralData());
287 } else if (token
.isNot(tok::eod
)) {
288 unsupported(PP
, token
.getLocation());
292 id
= isl_id_alloc(ctx
, vd
->getName().str().c_str(), vd
);
293 dim
= isl_space_params_alloc(ctx
, 1);
294 dim
= isl_space_set_dim_id(dim
, isl_dim_param
, 0, id
);
296 set
= isl_set_universe(dim
);
298 set
= isl_set_lower_bound_si(set
, isl_dim_param
, 0, lb
);
300 set
= isl_set_upper_bound_si(set
, isl_dim_param
, 0, ub
);
302 context
= isl_set_intersect(context
, set
);
304 context_value
= extract_initialization(context_value
, vd
);
308 /* Handle pragmas of the form
310 * #pragma pencil independent
312 * For each such pragma, add an entry to the "independent" vector.
314 struct PragmaPencilHandler
: public PragmaHandler
{
315 std::vector
<Independent
> &independent
;
317 PragmaPencilHandler(std::vector
<Independent
> &independent
) :
318 PragmaHandler("pencil"), independent(independent
) {}
320 virtual void HandlePragma(Preprocessor
&PP
,
321 PragmaIntroducerKind Introducer
,
324 IdentifierInfo
*info
;
327 if (token
.isNot(tok::identifier
))
330 info
= token
.getIdentifierInfo();
331 if (!info
->isStr("independent"))
335 if (token
.isNot(tok::eod
))
338 SourceManager
&SM
= PP
.getSourceManager();
339 SourceLocation sloc
= PencilTok
.getLocation();
340 unsigned line
= SM
.getExpansionLineNumber(sloc
);
341 independent
.push_back(Independent(line
));
345 #ifdef HAVE_TRANSLATELINECOL
347 /* Return a SourceLocation for line "line", column "col" of file "FID".
349 SourceLocation
translateLineCol(SourceManager
&SM
, FileID FID
, unsigned line
,
352 return SM
.translateLineCol(FID
, line
, col
);
357 /* Return a SourceLocation for line "line", column "col" of file "FID".
359 SourceLocation
translateLineCol(SourceManager
&SM
, FileID FID
, unsigned line
,
362 return SM
.getLocation(SM
.getFileEntryForID(FID
), line
, col
);
367 /* List of pairs of #pragma scop and #pragma endscop locations.
370 std::vector
<ScopLoc
> list
;
372 /* Add a new start (#pragma scop) location to the list.
373 * If the last #pragma scop did not have a matching
374 * #pragma endscop then overwrite it.
376 void add_start(unsigned line
, unsigned start
) {
379 loc
.start_line
= line
;
381 if (list
.size() == 0 || list
[list
.size() - 1].end
!= 0)
384 list
[list
.size() - 1] = loc
;
387 /* Set the end location (#pragma endscop) of the last pair
389 * If there is no such pair of if the end of that pair
390 * is already set, then ignore the spurious #pragma endscop.
392 void add_end(unsigned end
) {
393 if (list
.size() == 0 || list
[list
.size() - 1].end
!= 0)
395 list
[list
.size() - 1].end
= end
;
399 /* Handle pragmas of the form
403 * In particular, store the location of the line containing
404 * the pragma in the list "scops".
406 struct PragmaScopHandler
: public PragmaHandler
{
409 PragmaScopHandler(ScopLocList
&scops
) :
410 PragmaHandler("scop"), scops(scops
) {}
412 virtual void HandlePragma(Preprocessor
&PP
,
413 PragmaIntroducerKind Introducer
,
415 SourceManager
&SM
= PP
.getSourceManager();
416 SourceLocation sloc
= ScopTok
.getLocation();
417 int line
= SM
.getExpansionLineNumber(sloc
);
418 sloc
= translateLineCol(SM
, SM
.getFileID(sloc
), line
, 1);
419 scops
.add_start(line
, SM
.getFileOffset(sloc
));
423 /* Handle pragmas of the form
427 * In particular, store the location of the line following the one containing
428 * the pragma in the list "scops".
430 struct PragmaEndScopHandler
: public PragmaHandler
{
433 PragmaEndScopHandler(ScopLocList
&scops
) :
434 PragmaHandler("endscop"), scops(scops
) {}
436 virtual void HandlePragma(Preprocessor
&PP
,
437 PragmaIntroducerKind Introducer
,
439 SourceManager
&SM
= PP
.getSourceManager();
440 SourceLocation sloc
= EndScopTok
.getLocation();
441 int line
= SM
.getExpansionLineNumber(sloc
);
442 sloc
= translateLineCol(SM
, SM
.getFileID(sloc
), line
+ 1, 1);
443 scops
.add_end(SM
.getFileOffset(sloc
));
447 /* Handle pragmas of the form
449 * #pragma live-out identifier, identifier, ...
451 * Each identifier on the line is stored in live_out.
453 struct PragmaLiveOutHandler
: public PragmaHandler
{
455 set
<ValueDecl
*> &live_out
;
457 PragmaLiveOutHandler(Sema
&sema
, set
<ValueDecl
*> &live_out
) :
458 PragmaHandler("live"), sema(sema
), live_out(live_out
) {}
460 virtual void HandlePragma(Preprocessor
&PP
,
461 PragmaIntroducerKind Introducer
,
466 if (token
.isNot(tok::minus
))
469 if (token
.isNot(tok::identifier
) ||
470 !token
.getIdentifierInfo()->isStr("out"))
474 while (token
.isNot(tok::eod
)) {
477 vd
= get_value_decl(sema
, token
);
479 unsupported(PP
, token
.getLocation());
484 if (token
.is(tok::comma
))
490 /* For each array in "scop", set its value_bounds property
491 * based on the infofrmation in "value_bounds" and
492 * mark it as live_out if it appears in "live_out".
494 static void update_arrays(struct pet_scop
*scop
,
495 __isl_take isl_union_map
*value_bounds
, set
<ValueDecl
*> &live_out
)
497 set
<ValueDecl
*>::iterator lo_it
;
498 isl_ctx
*ctx
= isl_union_map_get_ctx(value_bounds
);
501 isl_union_map_free(value_bounds
);
505 for (int i
= 0; i
< scop
->n_array
; ++i
) {
510 pet_array
*array
= scop
->arrays
[i
];
512 id
= isl_set_get_tuple_id(array
->extent
);
513 decl
= (ValueDecl
*)isl_id_get_user(id
);
515 space
= isl_space_alloc(ctx
, 0, 0, 1);
516 space
= isl_space_set_tuple_id(space
, isl_dim_in
, id
);
518 bounds
= isl_union_map_extract_map(value_bounds
, space
);
519 if (!isl_map_plain_is_empty(bounds
))
520 array
->value_bounds
= isl_map_range(bounds
);
522 isl_map_free(bounds
);
524 lo_it
= live_out
.find(decl
);
525 if (lo_it
!= live_out
.end())
529 isl_union_map_free(value_bounds
);
532 /* Extract a pet_scop (if any) from each appropriate function.
533 * Each detected scop is passed to "fn".
534 * When autodetecting, at most one scop is extracted from each function.
535 * If "function" is not NULL, then we only extract a pet_scop if the
536 * name of the function matches.
537 * If "autodetect" is false, then we only extract if we have seen
538 * scop and endscop pragmas and if these are situated inside the function
541 struct PetASTConsumer
: public ASTConsumer
{
543 ASTContext
&ast_context
;
544 DiagnosticsEngine
&diags
;
546 std::vector
<Independent
> independent
;
547 const char *function
;
548 pet_options
*options
;
551 isl_set
*context_value
;
552 set
<ValueDecl
*> live_out
;
553 PragmaValueBoundsHandler
*vb_handler
;
554 int (*fn
)(struct pet_scop
*scop
, void *user
);
558 PetASTConsumer(isl_ctx
*ctx
, Preprocessor
&PP
, ASTContext
&ast_context
,
559 DiagnosticsEngine
&diags
, ScopLocList
&scops
,
560 const char *function
, pet_options
*options
,
561 int (*fn
)(struct pet_scop
*scop
, void *user
), void *user
) :
562 ctx(ctx
), PP(PP
), ast_context(ast_context
), diags(diags
),
563 scops(scops
), function(function
), options(options
),
564 vb_handler(NULL
), fn(fn
), user(user
), error(false)
567 space
= isl_space_params_alloc(ctx
, 0);
568 context
= isl_set_universe(isl_space_copy(space
));
569 context_value
= isl_set_universe(space
);
573 isl_set_free(context
);
574 isl_set_free(context_value
);
577 void handle_value_bounds(Sema
*sema
) {
578 vb_handler
= new PragmaValueBoundsHandler(ctx
, *sema
);
579 PP
.AddPragmaHandler(vb_handler
);
582 /* Add all pragma handlers to this->PP.
584 void add_pragma_handlers(Sema
*sema
) {
585 PP
.AddPragmaHandler(new PragmaParameterHandler(*sema
, context
,
587 PP
.AddPragmaHandler(new PragmaPencilHandler(independent
));
588 handle_value_bounds(sema
);
591 __isl_give isl_union_map
*get_value_bounds() {
592 return isl_union_map_copy(vb_handler
->value_bounds
);
595 /* Pass "scop" to "fn" after performing some postprocessing.
596 * In particular, add the context and value_bounds constraints
597 * speficied through pragmas, add reference identifiers and
598 * reset user pointers on parameters and tuple ids.
600 void call_fn(pet_scop
*scop
) {
603 if (diags
.hasErrorOccurred()) {
607 scop
->context
= isl_set_intersect(scop
->context
,
608 isl_set_copy(context
));
609 scop
->context_value
= isl_set_intersect(scop
->context_value
,
610 isl_set_copy(context_value
));
612 update_arrays(scop
, get_value_bounds(), live_out
);
614 scop
= pet_scop_add_ref_ids(scop
);
615 scop
= pet_scop_anonymize(scop
);
617 if (fn(scop
, user
) < 0)
621 /* For each explicitly marked scop (using pragmas),
622 * extract the scop and call "fn" on it if it is inside "fd".
624 void scan_scops(FunctionDecl
*fd
) {
626 vector
<ScopLoc
>::iterator it
;
627 isl_union_map
*vb
= vb_handler
->value_bounds
;
628 SourceManager
&SM
= PP
.getSourceManager();
631 if (scops
.list
.size() == 0)
634 start
= SM
.getFileOffset(fd
->getLocStart());
635 end
= SM
.getFileOffset(fd
->getLocEnd());
637 for (it
= scops
.list
.begin(); it
!= scops
.list
.end(); ++it
) {
645 PetScan
ps(PP
, ast_context
, loc
, options
,
646 isl_union_map_copy(vb
), independent
);
652 virtual HandleTopLevelDeclReturn
HandleTopLevelDecl(DeclGroupRef dg
) {
653 DeclGroupRef::iterator it
;
656 return HandleTopLevelDeclContinue
;
658 for (it
= dg
.begin(); it
!= dg
.end(); ++it
) {
659 isl_union_map
*vb
= vb_handler
->value_bounds
;
660 FunctionDecl
*fd
= dyn_cast
<clang::FunctionDecl
>(*it
);
666 fd
->getNameInfo().getAsString() != function
)
668 if (options
->autodetect
) {
671 PetScan
ps(PP
, ast_context
, loc
, options
,
672 isl_union_map_copy(vb
),
681 return HandleTopLevelDeclContinue
;
685 static const char *ResourceDir
= CLANG_PREFIX
"/lib/clang/"CLANG_VERSION_STRING
;
687 static const char *implicit_functions
[] = {
688 "min", "max", "intMod", "intCeil", "intFloor", "ceild", "floord"
691 static bool is_implicit(const IdentifierInfo
*ident
)
693 const char *name
= ident
->getNameStart();
694 for (int i
= 0; i
< ARRAY_SIZE(implicit_functions
); ++i
)
695 if (!strcmp(name
, implicit_functions
[i
]))
700 /* Ignore implicit function declaration warnings on
701 * "min", "max", "ceild" and "floord" as we detect and handle these
704 struct MyDiagnosticPrinter
: public TextDiagnosticPrinter
{
705 const DiagnosticOptions
*DiagOpts
;
706 #ifdef HAVE_BASIC_DIAGNOSTICOPTIONS_H
707 MyDiagnosticPrinter(DiagnosticOptions
*DO
) :
708 TextDiagnosticPrinter(llvm::errs(), DO
) {}
709 virtual DiagnosticConsumer
*clone(DiagnosticsEngine
&Diags
) const {
710 return new MyDiagnosticPrinter(&Diags
.getDiagnosticOptions());
713 MyDiagnosticPrinter(const DiagnosticOptions
&DO
) :
714 DiagOpts(&DO
), TextDiagnosticPrinter(llvm::errs(), DO
) {}
715 virtual DiagnosticConsumer
*clone(DiagnosticsEngine
&Diags
) const {
716 return new MyDiagnosticPrinter(*DiagOpts
);
719 virtual void HandleDiagnostic(DiagnosticsEngine::Level level
,
720 const DiagnosticInfo
&info
) {
721 if (info
.getID() == diag::ext_implicit_function_decl
&&
722 info
.getNumArgs() == 1 &&
723 info
.getArgKind(0) == DiagnosticsEngine::ak_identifierinfo
&&
724 is_implicit(info
.getArgIdentifier(0)))
725 /* ignore warning */;
727 TextDiagnosticPrinter::HandleDiagnostic(level
, info
);
733 #ifdef HAVE_CXXISPRODUCTION
734 static Driver
*construct_driver(const char *binary
, DiagnosticsEngine
&Diags
)
736 return new Driver(binary
, llvm::sys::getDefaultTargetTriple(),
737 "", false, false, Diags
);
739 #elif defined(HAVE_ISPRODUCTION)
740 static Driver
*construct_driver(const char *binary
, DiagnosticsEngine
&Diags
)
742 return new Driver(binary
, llvm::sys::getDefaultTargetTriple(),
746 static Driver
*construct_driver(const char *binary
, DiagnosticsEngine
&Diags
)
748 return new Driver(binary
, llvm::sys::getDefaultTargetTriple(),
753 /* Create a CompilerInvocation object that stores the command line
754 * arguments constructed by the driver.
755 * The arguments are mainly useful for setting up the system include
756 * paths on newer clangs and on some platforms.
758 static CompilerInvocation
*construct_invocation(const char *filename
,
759 DiagnosticsEngine
&Diags
)
761 const char *binary
= CLANG_PREFIX
"/bin/clang";
762 const llvm::OwningPtr
<Driver
> driver(construct_driver(binary
, Diags
));
763 std::vector
<const char *> Argv
;
764 Argv
.push_back(binary
);
765 Argv
.push_back(filename
);
766 const llvm::OwningPtr
<Compilation
> compilation(
767 driver
->BuildCompilation(llvm::ArrayRef
<const char *>(Argv
)));
768 JobList
&Jobs
= compilation
->getJobs();
772 Command
*cmd
= cast
<Command
>(*Jobs
.begin());
773 if (strcmp(cmd
->getCreator().getName(), "clang"))
776 const ArgStringList
*args
= &cmd
->getArguments();
778 CompilerInvocation
*invocation
= new CompilerInvocation
;
779 CompilerInvocation::CreateFromArgs(*invocation
, args
->data() + 1,
780 args
->data() + args
->size(),
787 static CompilerInvocation
*construct_invocation(const char *filename
,
788 DiagnosticsEngine
&Diags
)
795 #ifdef HAVE_BASIC_DIAGNOSTICOPTIONS_H
797 static MyDiagnosticPrinter
*construct_printer(CompilerInstance
*Clang
)
799 return new MyDiagnosticPrinter(new DiagnosticOptions());
804 static MyDiagnosticPrinter
*construct_printer(CompilerInstance
*Clang
)
806 return new MyDiagnosticPrinter(Clang
->getDiagnosticOpts());
811 #ifdef CREATETARGETINFO_TAKES_POINTER
813 static TargetInfo
*create_target_info(CompilerInstance
*Clang
,
814 DiagnosticsEngine
&Diags
)
816 TargetOptions
&TO
= Clang
->getTargetOpts();
817 TO
.Triple
= llvm::sys::getDefaultTargetTriple();
818 return TargetInfo::CreateTargetInfo(Diags
, &TO
);
823 static TargetInfo
*create_target_info(CompilerInstance
*Clang
,
824 DiagnosticsEngine
&Diags
)
826 TargetOptions
&TO
= Clang
->getTargetOpts();
827 TO
.Triple
= llvm::sys::getDefaultTargetTriple();
828 return TargetInfo::CreateTargetInfo(Diags
, TO
);
833 #ifdef CREATEDIAGNOSTICS_TAKES_ARG
835 static void create_diagnostics(CompilerInstance
*Clang
)
837 Clang
->createDiagnostics(0, NULL
);
842 static void create_diagnostics(CompilerInstance
*Clang
)
844 Clang
->createDiagnostics();
849 #ifdef ADDPATH_TAKES_4_ARGUMENTS
851 void add_path(HeaderSearchOptions
&HSO
, string Path
)
853 HSO
.AddPath(Path
, frontend::Angled
, false, false);
858 void add_path(HeaderSearchOptions
&HSO
, string Path
)
860 HSO
.AddPath(Path
, frontend::Angled
, true, false, false);
865 /* Add pet specific predefines to the preprocessor.
867 * We mimic the way <command line> is handled inside clang.
869 void add_predefines(Preprocessor
&PP
)
873 s
= PP
.getPredefines();
874 s
+= "# 1 \"<pet>\" 1\n"
875 "void __pencil_assume(int assumption);\n"
876 "# 1 \"<built-in>\" 2\n";
880 /* Extract a pet_scop from each function in the C source file called "filename".
881 * Each detected scop is passed to "fn".
882 * If "function" is not NULL, only extract a pet_scop from the function
884 * If "autodetect" is set, extract any pet_scop we can find.
885 * Otherwise, extract the pet_scop from the region delimited
886 * by "scop" and "endscop" pragmas.
888 * We first set up the clang parser and then try to extract the
889 * pet_scop from the appropriate function(s) in PetASTConsumer.
891 static int foreach_scop_in_C_source(isl_ctx
*ctx
,
892 const char *filename
, const char *function
, pet_options
*options
,
893 int (*fn
)(struct pet_scop
*scop
, void *user
), void *user
)
895 CompilerInstance
*Clang
= new CompilerInstance();
896 create_diagnostics(Clang
);
897 DiagnosticsEngine
&Diags
= Clang
->getDiagnostics();
898 Diags
.setSuppressSystemWarnings(true);
899 CompilerInvocation
*invocation
= construct_invocation(filename
, Diags
);
901 Clang
->setInvocation(invocation
);
902 Diags
.setClient(construct_printer(Clang
));
903 Clang
->createFileManager();
904 Clang
->createSourceManager(Clang
->getFileManager());
905 TargetInfo
*target
= create_target_info(Clang
, Diags
);
906 Clang
->setTarget(target
);
907 CompilerInvocation::setLangDefaults(Clang
->getLangOpts(), IK_C
,
908 LangStandard::lang_unspecified
);
909 HeaderSearchOptions
&HSO
= Clang
->getHeaderSearchOpts();
910 HSO
.ResourceDir
= ResourceDir
;
911 for (int i
= 0; i
< options
->n_path
; ++i
)
912 add_path(HSO
, options
->paths
[i
]);
913 PreprocessorOptions
&PO
= Clang
->getPreprocessorOpts();
914 for (int i
= 0; i
< options
->n_define
; ++i
)
915 PO
.addMacroDef(options
->defines
[i
]);
916 Clang
->createPreprocessor();
917 Preprocessor
&PP
= Clang
->getPreprocessor();
922 const FileEntry
*file
= Clang
->getFileManager().getFile(filename
);
924 isl_die(ctx
, isl_error_unknown
, "unable to open file",
925 do { delete Clang
; return -1; } while (0));
926 Clang
->getSourceManager().createMainFileID(file
);
928 Clang
->createASTContext();
929 PetASTConsumer
consumer(ctx
, PP
, Clang
->getASTContext(), Diags
,
930 scops
, function
, options
, fn
, user
);
931 Sema
*sema
= new Sema(PP
, Clang
->getASTContext(), consumer
);
933 if (!options
->autodetect
) {
934 PP
.AddPragmaHandler(new PragmaScopHandler(scops
));
935 PP
.AddPragmaHandler(new PragmaEndScopHandler(scops
));
936 PP
.AddPragmaHandler(new PragmaLiveOutHandler(*sema
,
940 consumer
.add_pragma_handlers(sema
);
942 Diags
.getClient()->BeginSourceFile(Clang
->getLangOpts(), &PP
);
944 Diags
.getClient()->EndSourceFile();
949 return consumer
.error
? -1 : 0;
952 /* Extract a pet_scop from each function in the C source file called "filename".
953 * Each detected scop is passed to "fn".
955 * This wrapper around foreach_scop_in_C_source is mainly used to ensure
956 * that all objects on the stack (of that function) are destroyed before we
957 * call llvm_shutdown.
959 static int pet_foreach_scop_in_C_source(isl_ctx
*ctx
,
960 const char *filename
, const char *function
,
961 int (*fn
)(struct pet_scop
*scop
, void *user
), void *user
)
964 pet_options
*options
;
965 bool allocated
= false;
967 options
= isl_ctx_peek_pet_options(ctx
);
969 options
= pet_options_new_with_defaults();
973 r
= foreach_scop_in_C_source(ctx
, filename
, function
, options
,
975 llvm::llvm_shutdown();
978 pet_options_free(options
);
983 /* Store "scop" into the address pointed to by "user".
984 * Return -1 to indicate that we are not interested in any further scops.
985 * This function should therefore not be called a second call
986 * so in principle there is no need to check if we have already set *user.
988 static int set_first_scop(pet_scop
*scop
, void *user
)
990 pet_scop
**p
= (pet_scop
**) user
;
1000 /* Extract a pet_scop from the C source file called "filename".
1001 * If "function" is not NULL, extract the pet_scop from the function
1004 * We start extracting scops from every function and then abort
1005 * as soon as we have extracted one scop.
1007 struct pet_scop
*pet_scop_extract_from_C_source(isl_ctx
*ctx
,
1008 const char *filename
, const char *function
)
1010 pet_scop
*scop
= NULL
;
1012 pet_foreach_scop_in_C_source(ctx
, filename
, function
,
1013 &set_first_scop
, &scop
);
1018 /* Internal data structure for pet_transform_C_source
1020 * transform is the function that should be called to print a scop
1021 * in is the input source file
1022 * out is the output source file
1023 * end is the offset of the end of the previous scop (zero if we have not
1024 * found any scop yet)
1025 * p is a printer that prints to out.
1027 struct pet_transform_data
{
1028 __isl_give isl_printer
*(*transform
)(__isl_take isl_printer
*p
,
1029 struct pet_scop
*scop
, void *user
);
1038 /* This function is called each time a scop is detected.
1040 * We first copy the input text code from the end of the previous scop
1041 * until the start of "scop" and then print the scop itself through
1042 * a call to data->transform. We set up the printer to print
1043 * the transformed code with the same (initial) indentation as
1044 * the original code.
1045 * Finally, we keep track of the end of "scop" so that we can
1046 * continue copying when we find the next scop.
1048 * Before calling data->transform, we store a pointer to the original
1049 * input file in the extended scop in case the user wants to call
1050 * pet_scop_print_original from the callback.
1052 static int pet_transform(struct pet_scop
*scop
, void *user
)
1054 struct pet_transform_data
*data
= (struct pet_transform_data
*) user
;
1057 start
= pet_loc_get_start(scop
->loc
);
1058 if (copy(data
->in
, data
->out
, data
->end
, start
) < 0)
1060 data
->end
= pet_loc_get_end(scop
->loc
);
1061 scop
= pet_scop_set_input_file(scop
, data
->in
);
1062 data
->p
= isl_printer_set_indent_prefix(data
->p
,
1063 pet_loc_get_indent(scop
->loc
));
1064 data
->p
= data
->transform(data
->p
, scop
, data
->user
);
1069 pet_scop_free(scop
);
1073 /* Transform the C source file "input" by rewriting each scop
1074 * through a call to "transform".
1075 * When autodetecting scops, at most one scop per function is rewritten.
1076 * The transformed C code is written to "output".
1078 * For each scop we find, we first copy the input text code
1079 * from the end of the previous scop (or the beginning of the file
1080 * in case of the first scop) until the start of the scop
1081 * and then print the scop itself through a call to "transform".
1082 * At the end we copy everything from the end of the final scop
1083 * until the end of the input file to "output".
1085 int pet_transform_C_source(isl_ctx
*ctx
, const char *input
, FILE *out
,
1086 __isl_give isl_printer
*(*transform
)(__isl_take isl_printer
*p
,
1087 struct pet_scop
*scop
, void *user
), void *user
)
1089 struct pet_transform_data data
;
1094 if (input
&& strcmp(input
, "-")) {
1095 data
.in
= fopen(input
, "r");
1097 isl_die(ctx
, isl_error_unknown
, "unable to open file",
1101 data
.p
= isl_printer_to_file(ctx
, data
.out
);
1102 data
.p
= isl_printer_set_output_format(data
.p
, ISL_FORMAT_C
);
1104 data
.transform
= transform
;
1107 r
= pet_foreach_scop_in_C_source(ctx
, input
, NULL
,
1108 &pet_transform
, &data
);
1110 isl_printer_free(data
.p
);
1113 if (r
== 0 && copy(data
.in
, data
.out
, data
.end
, -1) < 0)
1116 if (data
.in
!= stdin
)