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Chris Lattnera45664f2008-11-10 02:56:27 +00001//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the helper classes used to build and interpret debug
11// information in LLVM IR form.
12//
13//===----------------------------------------------------------------------===//
14
15#include "llvm/Analysis/DebugInfo.h"
16#include "llvm/Constants.h"
17#include "llvm/DerivedTypes.h"
18#include "llvm/Intrinsics.h"
Torok Edwin620f2802008-12-16 09:07:36 +000019#include "llvm/IntrinsicInst.h"
Chris Lattnera45664f2008-11-10 02:56:27 +000020#include "llvm/Instructions.h"
Owen Anderson99035272009-07-07 17:12:53 +000021#include "llvm/LLVMContext.h"
Chris Lattnera45664f2008-11-10 02:56:27 +000022#include "llvm/Module.h"
23#include "llvm/Analysis/ValueTracking.h"
Argyrios Kyrtzidis77eaa682009-05-03 08:50:41 +000024#include "llvm/Support/Dwarf.h"
Devang Patel9e529c32009-07-02 01:15:24 +000025#include "llvm/Support/DebugLoc.h"
Devang Patelbf3f5a02009-01-30 01:03:10 +000026#include "llvm/Support/Streams.h"
Bill Wendlingdc817b62009-05-14 18:26:15 +000027
Chris Lattnera45664f2008-11-10 02:56:27 +000028using namespace llvm;
Argyrios Kyrtzidis77eaa682009-05-03 08:50:41 +000029using namespace llvm::dwarf;
Chris Lattnera45664f2008-11-10 02:56:27 +000030
31//===----------------------------------------------------------------------===//
32// DIDescriptor
33//===----------------------------------------------------------------------===//
34
Argyrios Kyrtzidis77eaa682009-05-03 08:50:41 +000035/// ValidDebugInfo - Return true if V represents valid debug info value.
36bool DIDescriptor::ValidDebugInfo(Value *V, CodeGenOpt::Level OptLevel) {
37 if (!V)
38 return false;
39
40 GlobalVariable *GV = dyn_cast<GlobalVariable>(V->stripPointerCasts());
41 if (!GV)
42 return false;
43
44 if (!GV->hasInternalLinkage () && !GV->hasLinkOnceLinkage())
45 return false;
46
47 DIDescriptor DI(GV);
48
49 // Check current version. Allow Version6 for now.
50 unsigned Version = DI.getVersion();
51 if (Version != LLVMDebugVersion && Version != LLVMDebugVersion6)
52 return false;
53
54 unsigned Tag = DI.getTag();
55 switch (Tag) {
56 case DW_TAG_variable:
57 assert(DIVariable(GV).Verify() && "Invalid DebugInfo value");
58 break;
59 case DW_TAG_compile_unit:
60 assert(DICompileUnit(GV).Verify() && "Invalid DebugInfo value");
61 break;
62 case DW_TAG_subprogram:
63 assert(DISubprogram(GV).Verify() && "Invalid DebugInfo value");
64 break;
65 case DW_TAG_lexical_block:
Bill Wendlingdc817b62009-05-14 18:26:15 +000066 // FIXME: This interfers with the quality of generated code during
67 // optimization.
Argyrios Kyrtzidis77eaa682009-05-03 08:50:41 +000068 if (OptLevel != CodeGenOpt::None)
69 return false;
Bill Wendlingdc817b62009-05-14 18:26:15 +000070 // FALLTHROUGH
Argyrios Kyrtzidis77eaa682009-05-03 08:50:41 +000071 default:
72 break;
73 }
74
75 return true;
76}
77
Devang Patel9af2fa82009-06-23 22:25:41 +000078DIDescriptor::DIDescriptor(GlobalVariable *GV, unsigned RequiredTag) {
79 DbgGV = GV;
Chris Lattnera45664f2008-11-10 02:56:27 +000080
Bill Wendlingdc817b62009-05-14 18:26:15 +000081 // If this is non-null, check to see if the Tag matches. If not, set to null.
Chris Lattnera45664f2008-11-10 02:56:27 +000082 if (GV && getTag() != RequiredTag)
Devang Patel9af2fa82009-06-23 22:25:41 +000083 DbgGV = 0;
Chris Lattnera45664f2008-11-10 02:56:27 +000084}
85
Bill Wendling0582ae92009-03-13 04:39:26 +000086const std::string &
87DIDescriptor::getStringField(unsigned Elt, std::string &Result) const {
Devang Patel9af2fa82009-06-23 22:25:41 +000088 if (DbgGV == 0) {
Bill Wendling0582ae92009-03-13 04:39:26 +000089 Result.clear();
90 return Result;
91 }
Chris Lattnera45664f2008-11-10 02:56:27 +000092
Devang Patel9af2fa82009-06-23 22:25:41 +000093 Constant *C = DbgGV->getInitializer();
Bill Wendling0582ae92009-03-13 04:39:26 +000094 if (C == 0 || Elt >= C->getNumOperands()) {
95 Result.clear();
96 return Result;
97 }
Bill Wendlingdc817b62009-05-14 18:26:15 +000098
Chris Lattnera45664f2008-11-10 02:56:27 +000099 // Fills in the string if it succeeds
Bill Wendling0582ae92009-03-13 04:39:26 +0000100 if (!GetConstantStringInfo(C->getOperand(Elt), Result))
101 Result.clear();
102
103 return Result;
Chris Lattnera45664f2008-11-10 02:56:27 +0000104}
105
106uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
Devang Patel9af2fa82009-06-23 22:25:41 +0000107 if (DbgGV == 0) return 0;
Devang Pateld2f79a12009-07-28 19:55:13 +0000108 if (!DbgGV->hasInitializer()) return 0;
Bill Wendlingdc817b62009-05-14 18:26:15 +0000109
Devang Patel9af2fa82009-06-23 22:25:41 +0000110 Constant *C = DbgGV->getInitializer();
Chris Lattnera45664f2008-11-10 02:56:27 +0000111 if (C == 0 || Elt >= C->getNumOperands())
112 return 0;
Bill Wendlingdc817b62009-05-14 18:26:15 +0000113
Chris Lattnera45664f2008-11-10 02:56:27 +0000114 if (ConstantInt *CI = dyn_cast<ConstantInt>(C->getOperand(Elt)))
115 return CI->getZExtValue();
116 return 0;
117}
118
Chris Lattnera45664f2008-11-10 02:56:27 +0000119DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
Devang Patel9af2fa82009-06-23 22:25:41 +0000120 if (DbgGV == 0) return DIDescriptor();
Bill Wendlingdc817b62009-05-14 18:26:15 +0000121
Devang Patel9af2fa82009-06-23 22:25:41 +0000122 Constant *C = DbgGV->getInitializer();
Chris Lattnera45664f2008-11-10 02:56:27 +0000123 if (C == 0 || Elt >= C->getNumOperands())
124 return DIDescriptor();
Bill Wendlingdc817b62009-05-14 18:26:15 +0000125
Chris Lattnera45664f2008-11-10 02:56:27 +0000126 C = C->getOperand(Elt);
127 return DIDescriptor(dyn_cast<GlobalVariable>(C->stripPointerCasts()));
128}
129
130GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
Devang Patel9af2fa82009-06-23 22:25:41 +0000131 if (DbgGV == 0) return 0;
Bill Wendlingdc817b62009-05-14 18:26:15 +0000132
Devang Patel9af2fa82009-06-23 22:25:41 +0000133 Constant *C = DbgGV->getInitializer();
Chris Lattnera45664f2008-11-10 02:56:27 +0000134 if (C == 0 || Elt >= C->getNumOperands())
135 return 0;
Bill Wendlingdc817b62009-05-14 18:26:15 +0000136
Chris Lattnera45664f2008-11-10 02:56:27 +0000137 C = C->getOperand(Elt);
Chris Lattnera45664f2008-11-10 02:56:27 +0000138 return dyn_cast<GlobalVariable>(C->stripPointerCasts());
139}
140
Chris Lattnera45664f2008-11-10 02:56:27 +0000141//===----------------------------------------------------------------------===//
142// Simple Descriptor Constructors and other Methods
143//===----------------------------------------------------------------------===//
144
Bill Wendlingdc817b62009-05-14 18:26:15 +0000145// Needed by DIVariable::getType().
Devang Patel9af2fa82009-06-23 22:25:41 +0000146DIType::DIType(GlobalVariable *GV) : DIDescriptor(GV) {
147 if (!GV) return;
Torok Edwinb07fbd92008-12-13 08:25:29 +0000148 unsigned tag = getTag();
149 if (tag != dwarf::DW_TAG_base_type && !DIDerivedType::isDerivedType(tag) &&
150 !DICompositeType::isCompositeType(tag))
Devang Patel9af2fa82009-06-23 22:25:41 +0000151 DbgGV = 0;
Torok Edwinb07fbd92008-12-13 08:25:29 +0000152}
Chris Lattnera45664f2008-11-10 02:56:27 +0000153
154/// isDerivedType - Return true if the specified tag is legal for
155/// DIDerivedType.
Devang Patel486938f2009-01-12 21:38:43 +0000156bool DIType::isDerivedType(unsigned Tag) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000157 switch (Tag) {
158 case dwarf::DW_TAG_typedef:
159 case dwarf::DW_TAG_pointer_type:
160 case dwarf::DW_TAG_reference_type:
161 case dwarf::DW_TAG_const_type:
162 case dwarf::DW_TAG_volatile_type:
163 case dwarf::DW_TAG_restrict_type:
164 case dwarf::DW_TAG_member:
165 case dwarf::DW_TAG_inheritance:
166 return true;
167 default:
168 // FIXME: Even though it doesn't make sense, CompositeTypes are current
169 // modelled as DerivedTypes, this should return true for them as well.
170 return false;
171 }
172}
173
Chris Lattnera45664f2008-11-10 02:56:27 +0000174/// isCompositeType - Return true if the specified tag is legal for
175/// DICompositeType.
Devang Patel486938f2009-01-12 21:38:43 +0000176bool DIType::isCompositeType(unsigned TAG) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000177 switch (TAG) {
178 case dwarf::DW_TAG_array_type:
179 case dwarf::DW_TAG_structure_type:
180 case dwarf::DW_TAG_union_type:
181 case dwarf::DW_TAG_enumeration_type:
182 case dwarf::DW_TAG_vector_type:
183 case dwarf::DW_TAG_subroutine_type:
Devang Patel25cb0d72009-03-25 03:52:06 +0000184 case dwarf::DW_TAG_class_type:
Chris Lattnera45664f2008-11-10 02:56:27 +0000185 return true;
186 default:
187 return false;
188 }
189}
190
Chris Lattnera45664f2008-11-10 02:56:27 +0000191/// isVariable - Return true if the specified tag is legal for DIVariable.
192bool DIVariable::isVariable(unsigned Tag) {
193 switch (Tag) {
194 case dwarf::DW_TAG_auto_variable:
195 case dwarf::DW_TAG_arg_variable:
196 case dwarf::DW_TAG_return_variable:
197 return true;
198 default:
199 return false;
200 }
201}
202
Devang Patel68afdc32009-01-05 18:33:01 +0000203unsigned DIArray::getNumElements() const {
Devang Patel9af2fa82009-06-23 22:25:41 +0000204 assert (DbgGV && "Invalid DIArray");
205 Constant *C = DbgGV->getInitializer();
Devang Patel68afdc32009-01-05 18:33:01 +0000206 assert (C && "Invalid DIArray initializer");
207 return C->getNumOperands();
208}
Chris Lattnera45664f2008-11-10 02:56:27 +0000209
Devang Patelc4999d72009-07-22 18:23:44 +0000210/// replaceAllUsesWith - Replace all uses of debug info referenced by
211/// this descriptor. After this completes, the current debug info value
212/// is erased.
213void DIDerivedType::replaceAllUsesWith(DIDescriptor &D) {
214 if (isNull())
215 return;
216
Devang Patel6930f4f2009-07-22 18:56:16 +0000217 assert (!D.isNull() && "Can not replace with null");
Devang Patelc4999d72009-07-22 18:23:44 +0000218 getGV()->replaceAllUsesWith(D.getGV());
219 getGV()->eraseFromParent();
220}
221
Devang Patelb79b5352009-01-19 23:21:49 +0000222/// Verify - Verify that a compile unit is well formed.
223bool DICompileUnit::Verify() const {
224 if (isNull())
225 return false;
Bill Wendling0582ae92009-03-13 04:39:26 +0000226 std::string Res;
227 if (getFilename(Res).empty())
228 return false;
Devang Patelb79b5352009-01-19 23:21:49 +0000229 // It is possible that directory and produce string is empty.
Bill Wendling0582ae92009-03-13 04:39:26 +0000230 return true;
Devang Patelb79b5352009-01-19 23:21:49 +0000231}
232
233/// Verify - Verify that a type descriptor is well formed.
234bool DIType::Verify() const {
235 if (isNull())
236 return false;
237 if (getContext().isNull())
238 return false;
239
240 DICompileUnit CU = getCompileUnit();
241 if (!CU.isNull() && !CU.Verify())
242 return false;
243 return true;
244}
245
246/// Verify - Verify that a composite type descriptor is well formed.
247bool DICompositeType::Verify() const {
248 if (isNull())
249 return false;
250 if (getContext().isNull())
251 return false;
252
253 DICompileUnit CU = getCompileUnit();
254 if (!CU.isNull() && !CU.Verify())
255 return false;
256 return true;
257}
258
259/// Verify - Verify that a subprogram descriptor is well formed.
260bool DISubprogram::Verify() const {
261 if (isNull())
262 return false;
263
264 if (getContext().isNull())
265 return false;
266
267 DICompileUnit CU = getCompileUnit();
268 if (!CU.Verify())
269 return false;
270
271 DICompositeType Ty = getType();
272 if (!Ty.isNull() && !Ty.Verify())
273 return false;
274 return true;
275}
276
277/// Verify - Verify that a global variable descriptor is well formed.
278bool DIGlobalVariable::Verify() const {
279 if (isNull())
280 return false;
281
282 if (getContext().isNull())
283 return false;
284
285 DICompileUnit CU = getCompileUnit();
Chris Lattnere3f6cea2009-05-05 04:55:56 +0000286 if (!CU.isNull() && !CU.Verify())
Devang Patelb79b5352009-01-19 23:21:49 +0000287 return false;
288
289 DIType Ty = getType();
290 if (!Ty.Verify())
291 return false;
292
293 if (!getGlobal())
294 return false;
295
296 return true;
297}
298
299/// Verify - Verify that a variable descriptor is well formed.
300bool DIVariable::Verify() const {
301 if (isNull())
302 return false;
303
304 if (getContext().isNull())
305 return false;
306
307 DIType Ty = getType();
308 if (!Ty.Verify())
309 return false;
310
Devang Patelb79b5352009-01-19 23:21:49 +0000311 return true;
312}
313
Devang Patel36375ee2009-02-17 21:23:59 +0000314/// getOriginalTypeSize - If this type is derived from a base type then
315/// return base type size.
316uint64_t DIDerivedType::getOriginalTypeSize() const {
317 if (getTag() != dwarf::DW_TAG_member)
318 return getSizeInBits();
319 DIType BT = getTypeDerivedFrom();
320 if (BT.getTag() != dwarf::DW_TAG_base_type)
321 return getSizeInBits();
322 return BT.getSizeInBits();
323}
Devang Patelb79b5352009-01-19 23:21:49 +0000324
Devang Patelaf5b6bb2009-04-15 00:06:07 +0000325/// describes - Return true if this subprogram provides debugging
326/// information for the function F.
327bool DISubprogram::describes(const Function *F) {
328 assert (F && "Invalid function");
329 std::string Name;
330 getLinkageName(Name);
331 if (Name.empty())
332 getName(Name);
Daniel Dunbar460f6562009-07-26 09:48:23 +0000333 if (F->getName() == Name)
Devang Patelaf5b6bb2009-04-15 00:06:07 +0000334 return true;
335 return false;
336}
337
Chris Lattnera45664f2008-11-10 02:56:27 +0000338//===----------------------------------------------------------------------===//
Devang Patel7136a652009-07-01 22:10:23 +0000339// DIDescriptor: dump routines for all descriptors.
340//===----------------------------------------------------------------------===//
341
342
343/// dump - Print descriptor.
344void DIDescriptor::dump() const {
345 cerr << "[" << dwarf::TagString(getTag()) << "] ";
346 cerr << std::hex << "[GV:" << DbgGV << "]" << std::dec;
347}
348
349/// dump - Print compile unit.
350void DICompileUnit::dump() const {
351 if (getLanguage())
352 cerr << " [" << dwarf::LanguageString(getLanguage()) << "] ";
353
354 std::string Res1, Res2;
355 cerr << " [" << getDirectory(Res1) << "/" << getFilename(Res2) << " ]";
356}
357
358/// dump - Print type.
359void DIType::dump() const {
360 if (isNull()) return;
361
362 std::string Res;
363 if (!getName(Res).empty())
364 cerr << " [" << Res << "] ";
365
366 unsigned Tag = getTag();
367 cerr << " [" << dwarf::TagString(Tag) << "] ";
368
369 // TODO : Print context
370 getCompileUnit().dump();
371 cerr << " ["
372 << getLineNumber() << ", "
373 << getSizeInBits() << ", "
374 << getAlignInBits() << ", "
375 << getOffsetInBits()
376 << "] ";
377
378 if (isPrivate())
379 cerr << " [private] ";
380 else if (isProtected())
381 cerr << " [protected] ";
382
383 if (isForwardDecl())
384 cerr << " [fwd] ";
385
386 if (isBasicType(Tag))
387 DIBasicType(DbgGV).dump();
388 else if (isDerivedType(Tag))
389 DIDerivedType(DbgGV).dump();
390 else if (isCompositeType(Tag))
391 DICompositeType(DbgGV).dump();
392 else {
393 cerr << "Invalid DIType\n";
394 return;
395 }
396
397 cerr << "\n";
398}
399
400/// dump - Print basic type.
401void DIBasicType::dump() const {
402 cerr << " [" << dwarf::AttributeEncodingString(getEncoding()) << "] ";
403}
404
405/// dump - Print derived type.
406void DIDerivedType::dump() const {
407 cerr << "\n\t Derived From: "; getTypeDerivedFrom().dump();
408}
409
410/// dump - Print composite type.
411void DICompositeType::dump() const {
412 DIArray A = getTypeArray();
413 if (A.isNull())
414 return;
415 cerr << " [" << A.getNumElements() << " elements]";
416}
417
418/// dump - Print global.
419void DIGlobal::dump() const {
420 std::string Res;
421 if (!getName(Res).empty())
422 cerr << " [" << Res << "] ";
423
424 unsigned Tag = getTag();
425 cerr << " [" << dwarf::TagString(Tag) << "] ";
426
427 // TODO : Print context
428 getCompileUnit().dump();
429 cerr << " [" << getLineNumber() << "] ";
430
431 if (isLocalToUnit())
432 cerr << " [local] ";
433
434 if (isDefinition())
435 cerr << " [def] ";
436
437 if (isGlobalVariable(Tag))
438 DIGlobalVariable(DbgGV).dump();
439
440 cerr << "\n";
441}
442
443/// dump - Print subprogram.
444void DISubprogram::dump() const {
445 DIGlobal::dump();
446}
447
448/// dump - Print global variable.
449void DIGlobalVariable::dump() const {
450 cerr << " ["; getGlobal()->dump(); cerr << "] ";
451}
452
453/// dump - Print variable.
454void DIVariable::dump() const {
455 std::string Res;
456 if (!getName(Res).empty())
457 cerr << " [" << Res << "] ";
458
459 getCompileUnit().dump();
460 cerr << " [" << getLineNumber() << "] ";
461 getType().dump();
462 cerr << "\n";
463}
464
465//===----------------------------------------------------------------------===//
Chris Lattnera45664f2008-11-10 02:56:27 +0000466// DIFactory: Basic Helpers
467//===----------------------------------------------------------------------===//
468
Bill Wendlingdc817b62009-05-14 18:26:15 +0000469DIFactory::DIFactory(Module &m)
Owen Anderson99035272009-07-07 17:12:53 +0000470 : M(m), VMContext(M.getContext()), StopPointFn(0), FuncStartFn(0),
471 RegionStartFn(0), RegionEndFn(0),
Bill Wendlingdc817b62009-05-14 18:26:15 +0000472 DeclareFn(0) {
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000473 EmptyStructPtr = PointerType::getUnqual(StructType::get(VMContext));
Chris Lattner497a7a82008-11-10 04:10:34 +0000474}
475
476/// getCastToEmpty - Return this descriptor as a Constant* with type '{}*'.
477/// This is only valid when the descriptor is non-null.
478Constant *DIFactory::getCastToEmpty(DIDescriptor D) {
Owen Andersona7235ea2009-07-31 20:28:14 +0000479 if (D.isNull()) return llvm::Constant::getNullValue(EmptyStructPtr);
Owen Andersonbaf3c402009-07-29 18:55:55 +0000480 return ConstantExpr::getBitCast(D.getGV(), EmptyStructPtr);
Chris Lattner497a7a82008-11-10 04:10:34 +0000481}
482
Chris Lattnera45664f2008-11-10 02:56:27 +0000483Constant *DIFactory::GetTagConstant(unsigned TAG) {
Devang Patel6906ba52009-01-20 19:22:03 +0000484 assert((TAG & LLVMDebugVersionMask) == 0 &&
Chris Lattnera45664f2008-11-10 02:56:27 +0000485 "Tag too large for debug encoding!");
Owen Anderson1d0be152009-08-13 21:58:54 +0000486 return ConstantInt::get(Type::getInt32Ty(VMContext), TAG | LLVMDebugVersion);
Chris Lattnera45664f2008-11-10 02:56:27 +0000487}
488
489Constant *DIFactory::GetStringConstant(const std::string &String) {
490 // Check string cache for previous edition.
491 Constant *&Slot = StringCache[String];
492
493 // Return Constant if previously defined.
494 if (Slot) return Slot;
495
Owen Anderson1d0be152009-08-13 21:58:54 +0000496 const PointerType *DestTy = PointerType::getUnqual(Type::getInt8Ty(VMContext));
Chris Lattnera45664f2008-11-10 02:56:27 +0000497
Dan Gohmana119de82009-06-14 23:30:43 +0000498 // If empty string then use a i8* null instead.
Chris Lattnera45664f2008-11-10 02:56:27 +0000499 if (String.empty())
Owen Anderson9e9a0d52009-07-30 23:03:37 +0000500 return Slot = ConstantPointerNull::get(DestTy);
Chris Lattnera45664f2008-11-10 02:56:27 +0000501
502 // Construct string as an llvm constant.
Owen Anderson1d0be152009-08-13 21:58:54 +0000503 Constant *ConstStr = ConstantArray::get(VMContext, String);
Chris Lattnera45664f2008-11-10 02:56:27 +0000504
505 // Otherwise create and return a new string global.
Owen Andersone9b11b42009-07-08 19:03:57 +0000506 GlobalVariable *StrGV = new GlobalVariable(M, ConstStr->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000507 GlobalVariable::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000508 ConstStr, ".str");
Chris Lattnera45664f2008-11-10 02:56:27 +0000509 StrGV->setSection("llvm.metadata");
Owen Andersonbaf3c402009-07-29 18:55:55 +0000510 return Slot = ConstantExpr::getBitCast(StrGV, DestTy);
Chris Lattnera45664f2008-11-10 02:56:27 +0000511}
512
Chris Lattnera45664f2008-11-10 02:56:27 +0000513//===----------------------------------------------------------------------===//
514// DIFactory: Primary Constructors
515//===----------------------------------------------------------------------===//
516
Chris Lattnera45664f2008-11-10 02:56:27 +0000517/// GetOrCreateArray - Create an descriptor for an array of descriptors.
518/// This implicitly uniques the arrays created.
519DIArray DIFactory::GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys) {
520 SmallVector<Constant*, 16> Elts;
521
522 for (unsigned i = 0; i != NumTys; ++i)
Chris Lattner497a7a82008-11-10 04:10:34 +0000523 Elts.push_back(getCastToEmpty(Tys[i]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000524
Owen Andersondebcb012009-07-29 22:17:13 +0000525 Constant *Init = ConstantArray::get(ArrayType::get(EmptyStructPtr,
Chris Lattner497a7a82008-11-10 04:10:34 +0000526 Elts.size()),
Jay Foade3e51c02009-05-21 09:52:38 +0000527 Elts.data(), Elts.size());
Chris Lattnera45664f2008-11-10 02:56:27 +0000528 // If we already have this array, just return the uniqued version.
529 DIDescriptor &Entry = SimpleConstantCache[Init];
530 if (!Entry.isNull()) return DIArray(Entry.getGV());
Devang Patelbceda932009-08-06 20:57:44 +0000531
Owen Andersone9b11b42009-07-08 19:03:57 +0000532 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000533 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000534 Init, "llvm.dbg.array");
Chris Lattnera45664f2008-11-10 02:56:27 +0000535 GV->setSection("llvm.metadata");
536 Entry = DIDescriptor(GV);
537 return DIArray(GV);
538}
539
540/// GetOrCreateSubrange - Create a descriptor for a value range. This
541/// implicitly uniques the values returned.
542DISubrange DIFactory::GetOrCreateSubrange(int64_t Lo, int64_t Hi) {
543 Constant *Elts[] = {
544 GetTagConstant(dwarf::DW_TAG_subrange_type),
Owen Anderson1d0be152009-08-13 21:58:54 +0000545 ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
546 ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
Chris Lattnera45664f2008-11-10 02:56:27 +0000547 };
548
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000549 Constant *Init = ConstantStruct::get(VMContext, Elts,
550 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000551
552 // If we already have this range, just return the uniqued version.
553 DIDescriptor &Entry = SimpleConstantCache[Init];
554 if (!Entry.isNull()) return DISubrange(Entry.getGV());
555
556 M.addTypeName("llvm.dbg.subrange.type", Init->getType());
557
Owen Andersone9b11b42009-07-08 19:03:57 +0000558 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000559 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000560 Init, "llvm.dbg.subrange");
Chris Lattnera45664f2008-11-10 02:56:27 +0000561 GV->setSection("llvm.metadata");
562 Entry = DIDescriptor(GV);
563 return DISubrange(GV);
564}
565
566
567
568/// CreateCompileUnit - Create a new descriptor for the specified compile
569/// unit. Note that this does not unique compile units within the module.
570DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
571 const std::string &Filename,
572 const std::string &Directory,
Devang Patel3b64c6b2009-01-23 22:33:47 +0000573 const std::string &Producer,
Devang Pateldd9db662009-01-30 18:20:31 +0000574 bool isMain,
Devang Patel3b64c6b2009-01-23 22:33:47 +0000575 bool isOptimized,
Devang Patel13319ce2009-02-17 22:43:44 +0000576 const char *Flags,
577 unsigned RunTimeVer) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000578 Constant *Elts[] = {
579 GetTagConstant(dwarf::DW_TAG_compile_unit),
Owen Andersona7235ea2009-07-31 20:28:14 +0000580 llvm::Constant::getNullValue(EmptyStructPtr),
Owen Anderson1d0be152009-08-13 21:58:54 +0000581 ConstantInt::get(Type::getInt32Ty(VMContext), LangID),
Chris Lattnera45664f2008-11-10 02:56:27 +0000582 GetStringConstant(Filename),
583 GetStringConstant(Directory),
Devang Patel3b64c6b2009-01-23 22:33:47 +0000584 GetStringConstant(Producer),
Owen Anderson1d0be152009-08-13 21:58:54 +0000585 ConstantInt::get(Type::getInt1Ty(VMContext), isMain),
586 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
Devang Patel13319ce2009-02-17 22:43:44 +0000587 GetStringConstant(Flags),
Owen Anderson1d0be152009-08-13 21:58:54 +0000588 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer)
Chris Lattnera45664f2008-11-10 02:56:27 +0000589 };
590
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000591 Constant *Init = ConstantStruct::get(VMContext, Elts,
592 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000593
594 M.addTypeName("llvm.dbg.compile_unit.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000595 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Devang Patel13e16b62009-06-26 01:49:18 +0000596 GlobalValue::LinkOnceAnyLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000597 Init, "llvm.dbg.compile_unit");
Chris Lattnera45664f2008-11-10 02:56:27 +0000598 GV->setSection("llvm.metadata");
599 return DICompileUnit(GV);
600}
601
602/// CreateEnumerator - Create a single enumerator value.
603DIEnumerator DIFactory::CreateEnumerator(const std::string &Name, uint64_t Val){
604 Constant *Elts[] = {
605 GetTagConstant(dwarf::DW_TAG_enumerator),
606 GetStringConstant(Name),
Owen Anderson1d0be152009-08-13 21:58:54 +0000607 ConstantInt::get(Type::getInt64Ty(VMContext), Val)
Chris Lattnera45664f2008-11-10 02:56:27 +0000608 };
609
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000610 Constant *Init = ConstantStruct::get(VMContext, Elts,
611 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000612
613 M.addTypeName("llvm.dbg.enumerator.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000614 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000615 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000616 Init, "llvm.dbg.enumerator");
Chris Lattnera45664f2008-11-10 02:56:27 +0000617 GV->setSection("llvm.metadata");
618 return DIEnumerator(GV);
619}
620
621
622/// CreateBasicType - Create a basic type like int, float, etc.
623DIBasicType DIFactory::CreateBasicType(DIDescriptor Context,
Bill Wendling0582ae92009-03-13 04:39:26 +0000624 const std::string &Name,
Chris Lattnera45664f2008-11-10 02:56:27 +0000625 DICompileUnit CompileUnit,
626 unsigned LineNumber,
627 uint64_t SizeInBits,
628 uint64_t AlignInBits,
629 uint64_t OffsetInBits, unsigned Flags,
Devang Pateldd9db662009-01-30 18:20:31 +0000630 unsigned Encoding) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000631 Constant *Elts[] = {
632 GetTagConstant(dwarf::DW_TAG_base_type),
Chris Lattner497a7a82008-11-10 04:10:34 +0000633 getCastToEmpty(Context),
Chris Lattnera45664f2008-11-10 02:56:27 +0000634 GetStringConstant(Name),
Chris Lattner497a7a82008-11-10 04:10:34 +0000635 getCastToEmpty(CompileUnit),
Owen Anderson1d0be152009-08-13 21:58:54 +0000636 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
637 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
638 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
639 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
640 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
641 ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
Chris Lattnera45664f2008-11-10 02:56:27 +0000642 };
643
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000644 Constant *Init = ConstantStruct::get(VMContext, Elts,
645 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000646
647 M.addTypeName("llvm.dbg.basictype.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000648 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000649 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000650 Init, "llvm.dbg.basictype");
Chris Lattnera45664f2008-11-10 02:56:27 +0000651 GV->setSection("llvm.metadata");
652 return DIBasicType(GV);
653}
654
655/// CreateDerivedType - Create a derived type like const qualified type,
656/// pointer, typedef, etc.
657DIDerivedType DIFactory::CreateDerivedType(unsigned Tag,
658 DIDescriptor Context,
659 const std::string &Name,
660 DICompileUnit CompileUnit,
661 unsigned LineNumber,
662 uint64_t SizeInBits,
663 uint64_t AlignInBits,
664 uint64_t OffsetInBits,
665 unsigned Flags,
Devang Pateldd9db662009-01-30 18:20:31 +0000666 DIType DerivedFrom) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000667 Constant *Elts[] = {
668 GetTagConstant(Tag),
Chris Lattner497a7a82008-11-10 04:10:34 +0000669 getCastToEmpty(Context),
Chris Lattnera45664f2008-11-10 02:56:27 +0000670 GetStringConstant(Name),
Chris Lattner497a7a82008-11-10 04:10:34 +0000671 getCastToEmpty(CompileUnit),
Owen Anderson1d0be152009-08-13 21:58:54 +0000672 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
673 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
674 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
675 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
676 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
Devang Pateldd9db662009-01-30 18:20:31 +0000677 getCastToEmpty(DerivedFrom)
Chris Lattnera45664f2008-11-10 02:56:27 +0000678 };
679
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000680 Constant *Init = ConstantStruct::get(VMContext, Elts,
681 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000682
683 M.addTypeName("llvm.dbg.derivedtype.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000684 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000685 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000686 Init, "llvm.dbg.derivedtype");
Chris Lattnera45664f2008-11-10 02:56:27 +0000687 GV->setSection("llvm.metadata");
688 return DIDerivedType(GV);
689}
690
691/// CreateCompositeType - Create a composite type like array, struct, etc.
692DICompositeType DIFactory::CreateCompositeType(unsigned Tag,
693 DIDescriptor Context,
694 const std::string &Name,
695 DICompileUnit CompileUnit,
696 unsigned LineNumber,
697 uint64_t SizeInBits,
698 uint64_t AlignInBits,
699 uint64_t OffsetInBits,
700 unsigned Flags,
701 DIType DerivedFrom,
Devang Patel13319ce2009-02-17 22:43:44 +0000702 DIArray Elements,
703 unsigned RuntimeLang) {
Owen Andersone277fed2009-07-07 16:31:25 +0000704
Chris Lattnera45664f2008-11-10 02:56:27 +0000705 Constant *Elts[] = {
706 GetTagConstant(Tag),
Chris Lattner497a7a82008-11-10 04:10:34 +0000707 getCastToEmpty(Context),
Chris Lattnera45664f2008-11-10 02:56:27 +0000708 GetStringConstant(Name),
Chris Lattner497a7a82008-11-10 04:10:34 +0000709 getCastToEmpty(CompileUnit),
Owen Anderson1d0be152009-08-13 21:58:54 +0000710 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
711 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
712 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
713 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
714 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
Chris Lattner497a7a82008-11-10 04:10:34 +0000715 getCastToEmpty(DerivedFrom),
Devang Patel13319ce2009-02-17 22:43:44 +0000716 getCastToEmpty(Elements),
Owen Anderson1d0be152009-08-13 21:58:54 +0000717 ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang)
Chris Lattnera45664f2008-11-10 02:56:27 +0000718 };
719
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000720 Constant *Init = ConstantStruct::get(VMContext, Elts,
721 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000722
723 M.addTypeName("llvm.dbg.composite.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000724 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000725 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000726 Init, "llvm.dbg.composite");
Chris Lattnera45664f2008-11-10 02:56:27 +0000727 GV->setSection("llvm.metadata");
728 return DICompositeType(GV);
729}
730
731
732/// CreateSubprogram - Create a new descriptor for the specified subprogram.
733/// See comments in DISubprogram for descriptions of these fields. This
734/// method does not unique the generated descriptors.
735DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
736 const std::string &Name,
737 const std::string &DisplayName,
738 const std::string &LinkageName,
739 DICompileUnit CompileUnit,
740 unsigned LineNo, DIType Type,
741 bool isLocalToUnit,
Devang Pateldd9db662009-01-30 18:20:31 +0000742 bool isDefinition) {
Devang Patel854967e2008-12-17 22:39:29 +0000743
Chris Lattnera45664f2008-11-10 02:56:27 +0000744 Constant *Elts[] = {
745 GetTagConstant(dwarf::DW_TAG_subprogram),
Owen Andersona7235ea2009-07-31 20:28:14 +0000746 llvm::Constant::getNullValue(EmptyStructPtr),
Chris Lattner497a7a82008-11-10 04:10:34 +0000747 getCastToEmpty(Context),
Chris Lattnera45664f2008-11-10 02:56:27 +0000748 GetStringConstant(Name),
749 GetStringConstant(DisplayName),
750 GetStringConstant(LinkageName),
Chris Lattner497a7a82008-11-10 04:10:34 +0000751 getCastToEmpty(CompileUnit),
Owen Anderson1d0be152009-08-13 21:58:54 +0000752 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
Chris Lattner497a7a82008-11-10 04:10:34 +0000753 getCastToEmpty(Type),
Owen Anderson1d0be152009-08-13 21:58:54 +0000754 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
755 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition)
Chris Lattnera45664f2008-11-10 02:56:27 +0000756 };
757
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000758 Constant *Init = ConstantStruct::get(VMContext, Elts,
759 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000760
761 M.addTypeName("llvm.dbg.subprogram.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000762 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Devang Patel13e16b62009-06-26 01:49:18 +0000763 GlobalValue::LinkOnceAnyLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000764 Init, "llvm.dbg.subprogram");
Chris Lattnera45664f2008-11-10 02:56:27 +0000765 GV->setSection("llvm.metadata");
766 return DISubprogram(GV);
767}
768
769/// CreateGlobalVariable - Create a new descriptor for the specified global.
770DIGlobalVariable
771DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name,
772 const std::string &DisplayName,
773 const std::string &LinkageName,
774 DICompileUnit CompileUnit,
775 unsigned LineNo, DIType Type,bool isLocalToUnit,
Devang Pateldd9db662009-01-30 18:20:31 +0000776 bool isDefinition, llvm::GlobalVariable *Val) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000777 Constant *Elts[] = {
778 GetTagConstant(dwarf::DW_TAG_variable),
Owen Andersona7235ea2009-07-31 20:28:14 +0000779 llvm::Constant::getNullValue(EmptyStructPtr),
Chris Lattner497a7a82008-11-10 04:10:34 +0000780 getCastToEmpty(Context),
Chris Lattnera45664f2008-11-10 02:56:27 +0000781 GetStringConstant(Name),
782 GetStringConstant(DisplayName),
783 GetStringConstant(LinkageName),
Chris Lattner497a7a82008-11-10 04:10:34 +0000784 getCastToEmpty(CompileUnit),
Owen Anderson1d0be152009-08-13 21:58:54 +0000785 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
Chris Lattner497a7a82008-11-10 04:10:34 +0000786 getCastToEmpty(Type),
Owen Anderson1d0be152009-08-13 21:58:54 +0000787 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
788 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
Owen Andersonbaf3c402009-07-29 18:55:55 +0000789 ConstantExpr::getBitCast(Val, EmptyStructPtr)
Chris Lattnera45664f2008-11-10 02:56:27 +0000790 };
791
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000792 Constant *Init = ConstantStruct::get(VMContext, Elts,
793 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000794
795 M.addTypeName("llvm.dbg.global_variable.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000796 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Devang Patel13e16b62009-06-26 01:49:18 +0000797 GlobalValue::LinkOnceAnyLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000798 Init, "llvm.dbg.global_variable");
Chris Lattnera45664f2008-11-10 02:56:27 +0000799 GV->setSection("llvm.metadata");
800 return DIGlobalVariable(GV);
801}
802
803
804/// CreateVariable - Create a new descriptor for the specified variable.
805DIVariable DIFactory::CreateVariable(unsigned Tag, DIDescriptor Context,
806 const std::string &Name,
807 DICompileUnit CompileUnit, unsigned LineNo,
Devang Pateldd9db662009-01-30 18:20:31 +0000808 DIType Type) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000809 Constant *Elts[] = {
810 GetTagConstant(Tag),
Chris Lattner497a7a82008-11-10 04:10:34 +0000811 getCastToEmpty(Context),
Chris Lattnera45664f2008-11-10 02:56:27 +0000812 GetStringConstant(Name),
Chris Lattner497a7a82008-11-10 04:10:34 +0000813 getCastToEmpty(CompileUnit),
Owen Anderson1d0be152009-08-13 21:58:54 +0000814 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
Devang Pateldd9db662009-01-30 18:20:31 +0000815 getCastToEmpty(Type)
Chris Lattnera45664f2008-11-10 02:56:27 +0000816 };
817
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000818 Constant *Init = ConstantStruct::get(VMContext, Elts,
819 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000820
821 M.addTypeName("llvm.dbg.variable.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000822 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000823 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000824 Init, "llvm.dbg.variable");
Chris Lattnera45664f2008-11-10 02:56:27 +0000825 GV->setSection("llvm.metadata");
826 return DIVariable(GV);
827}
828
829
830/// CreateBlock - This creates a descriptor for a lexical block with the
Owen Anderson99035272009-07-07 17:12:53 +0000831/// specified parent VMContext.
Chris Lattnera45664f2008-11-10 02:56:27 +0000832DIBlock DIFactory::CreateBlock(DIDescriptor Context) {
833 Constant *Elts[] = {
834 GetTagConstant(dwarf::DW_TAG_lexical_block),
Chris Lattner497a7a82008-11-10 04:10:34 +0000835 getCastToEmpty(Context)
Chris Lattnera45664f2008-11-10 02:56:27 +0000836 };
837
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000838 Constant *Init = ConstantStruct::get(VMContext, Elts,
839 sizeof(Elts)/sizeof(Elts[0]));
Chris Lattnera45664f2008-11-10 02:56:27 +0000840
841 M.addTypeName("llvm.dbg.block.type", Init->getType());
Owen Andersone9b11b42009-07-08 19:03:57 +0000842 GlobalVariable *GV = new GlobalVariable(M, Init->getType(), true,
Chris Lattnera45664f2008-11-10 02:56:27 +0000843 GlobalValue::InternalLinkage,
Owen Andersone9b11b42009-07-08 19:03:57 +0000844 Init, "llvm.dbg.block");
Chris Lattnera45664f2008-11-10 02:56:27 +0000845 GV->setSection("llvm.metadata");
846 return DIBlock(GV);
847}
848
849
850//===----------------------------------------------------------------------===//
851// DIFactory: Routines for inserting code into a function
852//===----------------------------------------------------------------------===//
853
854/// InsertStopPoint - Create a new llvm.dbg.stoppoint intrinsic invocation,
855/// inserting it at the end of the specified basic block.
856void DIFactory::InsertStopPoint(DICompileUnit CU, unsigned LineNo,
857 unsigned ColNo, BasicBlock *BB) {
858
859 // Lazily construct llvm.dbg.stoppoint function.
860 if (!StopPointFn)
861 StopPointFn = llvm::Intrinsic::getDeclaration(&M,
862 llvm::Intrinsic::dbg_stoppoint);
863
864 // Invoke llvm.dbg.stoppoint
865 Value *Args[] = {
Owen Anderson1d0be152009-08-13 21:58:54 +0000866 ConstantInt::get(llvm::Type::getInt32Ty(VMContext), LineNo),
867 ConstantInt::get(llvm::Type::getInt32Ty(VMContext), ColNo),
Chris Lattner497a7a82008-11-10 04:10:34 +0000868 getCastToEmpty(CU)
Chris Lattnera45664f2008-11-10 02:56:27 +0000869 };
870 CallInst::Create(StopPointFn, Args, Args+3, "", BB);
871}
872
873/// InsertSubprogramStart - Create a new llvm.dbg.func.start intrinsic to
874/// mark the start of the specified subprogram.
875void DIFactory::InsertSubprogramStart(DISubprogram SP, BasicBlock *BB) {
876 // Lazily construct llvm.dbg.func.start.
877 if (!FuncStartFn)
Bill Wendlingdc817b62009-05-14 18:26:15 +0000878 FuncStartFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_func_start);
Chris Lattnera45664f2008-11-10 02:56:27 +0000879
880 // Call llvm.dbg.func.start which also implicitly sets a stoppoint.
Chris Lattner497a7a82008-11-10 04:10:34 +0000881 CallInst::Create(FuncStartFn, getCastToEmpty(SP), "", BB);
Chris Lattnera45664f2008-11-10 02:56:27 +0000882}
883
884/// InsertRegionStart - Insert a new llvm.dbg.region.start intrinsic call to
885/// mark the start of a region for the specified scoping descriptor.
886void DIFactory::InsertRegionStart(DIDescriptor D, BasicBlock *BB) {
887 // Lazily construct llvm.dbg.region.start function.
888 if (!RegionStartFn)
Bill Wendlingdc817b62009-05-14 18:26:15 +0000889 RegionStartFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_region_start);
890
Chris Lattnera45664f2008-11-10 02:56:27 +0000891 // Call llvm.dbg.func.start.
Chris Lattner497a7a82008-11-10 04:10:34 +0000892 CallInst::Create(RegionStartFn, getCastToEmpty(D), "", BB);
Chris Lattnera45664f2008-11-10 02:56:27 +0000893}
894
Chris Lattnera45664f2008-11-10 02:56:27 +0000895/// InsertRegionEnd - Insert a new llvm.dbg.region.end intrinsic call to
896/// mark the end of a region for the specified scoping descriptor.
897void DIFactory::InsertRegionEnd(DIDescriptor D, BasicBlock *BB) {
898 // Lazily construct llvm.dbg.region.end function.
899 if (!RegionEndFn)
Bill Wendlingdc817b62009-05-14 18:26:15 +0000900 RegionEndFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_region_end);
901
902 // Call llvm.dbg.region.end.
Chris Lattner497a7a82008-11-10 04:10:34 +0000903 CallInst::Create(RegionEndFn, getCastToEmpty(D), "", BB);
Chris Lattnera45664f2008-11-10 02:56:27 +0000904}
905
906/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
Bill Wendlingdc817b62009-05-14 18:26:15 +0000907void DIFactory::InsertDeclare(Value *Storage, DIVariable D, BasicBlock *BB) {
Chris Lattnera45664f2008-11-10 02:56:27 +0000908 // Cast the storage to a {}* for the call to llvm.dbg.declare.
Bill Wendlingdc817b62009-05-14 18:26:15 +0000909 Storage = new BitCastInst(Storage, EmptyStructPtr, "", BB);
Chris Lattnera45664f2008-11-10 02:56:27 +0000910
911 if (!DeclareFn)
Bill Wendlingdc817b62009-05-14 18:26:15 +0000912 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
913
Chris Lattner497a7a82008-11-10 04:10:34 +0000914 Value *Args[] = { Storage, getCastToEmpty(D) };
Chris Lattnera45664f2008-11-10 02:56:27 +0000915 CallInst::Create(DeclareFn, Args, Args+2, "", BB);
916}
Torok Edwin620f2802008-12-16 09:07:36 +0000917
Devang Pateld2f79a12009-07-28 19:55:13 +0000918//===----------------------------------------------------------------------===//
Devang Patel98c65172009-07-30 18:25:15 +0000919// DebugInfoFinder implementations.
Devang Pateld2f79a12009-07-28 19:55:13 +0000920//===----------------------------------------------------------------------===//
921
Devang Patel98c65172009-07-30 18:25:15 +0000922/// processModule - Process entire module and collect debug info.
923void DebugInfoFinder::processModule(Module &M) {
Devang Pateld2f79a12009-07-28 19:55:13 +0000924
925 for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
926 for (Function::iterator FI = (*I).begin(), FE = (*I).end(); FI != FE; ++FI)
927 for (BasicBlock::iterator BI = (*FI).begin(), BE = (*FI).end(); BI != BE;
928 ++BI) {
929 if (DbgStopPointInst *SPI = dyn_cast<DbgStopPointInst>(BI))
Devang Patel98c65172009-07-30 18:25:15 +0000930 processStopPoint(SPI);
Devang Pateld2f79a12009-07-28 19:55:13 +0000931 else if (DbgFuncStartInst *FSI = dyn_cast<DbgFuncStartInst>(BI))
Devang Patel98c65172009-07-30 18:25:15 +0000932 processFuncStart(FSI);
Devang Patele802f1c2009-07-30 17:30:23 +0000933 else if (DbgRegionStartInst *DRS = dyn_cast<DbgRegionStartInst>(BI))
Devang Patel98c65172009-07-30 18:25:15 +0000934 processRegionStart(DRS);
Devang Patele802f1c2009-07-30 17:30:23 +0000935 else if (DbgRegionEndInst *DRE = dyn_cast<DbgRegionEndInst>(BI))
Devang Patel98c65172009-07-30 18:25:15 +0000936 processRegionEnd(DRE);
Devang Patelb4d31302009-07-31 18:18:52 +0000937 else if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
938 processDeclare(DDI);
Devang Pateld2f79a12009-07-28 19:55:13 +0000939 }
940
941 for (Module::global_iterator GVI = M.global_begin(), GVE = M.global_end();
942 GVI != GVE; ++GVI) {
943 GlobalVariable *GV = GVI;
944 if (!GV->hasName() || !GV->isConstant()
Devang Patel4c77dfa2009-08-17 20:36:20 +0000945 || strncmp(GV->getName().data(), "llvm.dbg.global_variable", 24)
Devang Pateld2f79a12009-07-28 19:55:13 +0000946 || !GV->hasInitializer())
947 continue;
948 DIGlobalVariable DIG(GV);
949 if (addGlobalVariable(DIG)) {
950 addCompileUnit(DIG.getCompileUnit());
Devang Patel98c65172009-07-30 18:25:15 +0000951 processType(DIG.getType());
Devang Pateld2f79a12009-07-28 19:55:13 +0000952 }
953 }
954}
955
Devang Patel98c65172009-07-30 18:25:15 +0000956/// processType - Process DIType.
957void DebugInfoFinder::processType(DIType DT) {
Devang Patel72bcdb62009-08-10 22:09:58 +0000958 if (!addType(DT))
Devang Pateld2f79a12009-07-28 19:55:13 +0000959 return;
960
961 addCompileUnit(DT.getCompileUnit());
962 if (DT.isCompositeType(DT.getTag())) {
963 DICompositeType DCT(DT.getGV());
Devang Patel98c65172009-07-30 18:25:15 +0000964 processType(DCT.getTypeDerivedFrom());
Devang Pateld2f79a12009-07-28 19:55:13 +0000965 DIArray DA = DCT.getTypeArray();
966 if (!DA.isNull())
967 for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
968 DIDescriptor D = DA.getElement(i);
969 DIType TypeE = DIType(D.getGV());
970 if (!TypeE.isNull())
Devang Patel98c65172009-07-30 18:25:15 +0000971 processType(TypeE);
Devang Pateld2f79a12009-07-28 19:55:13 +0000972 else
Devang Patel98c65172009-07-30 18:25:15 +0000973 processSubprogram(DISubprogram(D.getGV()));
Devang Pateld2f79a12009-07-28 19:55:13 +0000974 }
975 } else if (DT.isDerivedType(DT.getTag())) {
976 DIDerivedType DDT(DT.getGV());
977 if (!DDT.isNull())
Devang Patel98c65172009-07-30 18:25:15 +0000978 processType(DDT.getTypeDerivedFrom());
Devang Pateld2f79a12009-07-28 19:55:13 +0000979 }
980}
981
Devang Patel98c65172009-07-30 18:25:15 +0000982/// processSubprogram - Process DISubprogram.
983void DebugInfoFinder::processSubprogram(DISubprogram SP) {
Devang Patele802f1c2009-07-30 17:30:23 +0000984 if (SP.isNull())
985 return;
Devang Pateld2f79a12009-07-28 19:55:13 +0000986 if (!addSubprogram(SP))
987 return;
988 addCompileUnit(SP.getCompileUnit());
Devang Patel98c65172009-07-30 18:25:15 +0000989 processType(SP.getType());
Devang Pateld2f79a12009-07-28 19:55:13 +0000990}
991
Devang Patel98c65172009-07-30 18:25:15 +0000992/// processStopPoint - Process DbgStopPointInst.
993void DebugInfoFinder::processStopPoint(DbgStopPointInst *SPI) {
Devang Pateld2f79a12009-07-28 19:55:13 +0000994 GlobalVariable *Context = dyn_cast<GlobalVariable>(SPI->getContext());
995 addCompileUnit(DICompileUnit(Context));
996}
997
Devang Patel98c65172009-07-30 18:25:15 +0000998/// processFuncStart - Process DbgFuncStartInst.
999void DebugInfoFinder::processFuncStart(DbgFuncStartInst *FSI) {
Devang Pateld2f79a12009-07-28 19:55:13 +00001000 GlobalVariable *SP = dyn_cast<GlobalVariable>(FSI->getSubprogram());
Devang Patel98c65172009-07-30 18:25:15 +00001001 processSubprogram(DISubprogram(SP));
Devang Pateld2f79a12009-07-28 19:55:13 +00001002}
1003
Devang Patel98c65172009-07-30 18:25:15 +00001004/// processRegionStart - Process DbgRegionStart.
1005void DebugInfoFinder::processRegionStart(DbgRegionStartInst *DRS) {
Devang Patele802f1c2009-07-30 17:30:23 +00001006 GlobalVariable *SP = dyn_cast<GlobalVariable>(DRS->getContext());
Devang Patel98c65172009-07-30 18:25:15 +00001007 processSubprogram(DISubprogram(SP));
Devang Patele802f1c2009-07-30 17:30:23 +00001008}
1009
Devang Patel98c65172009-07-30 18:25:15 +00001010/// processRegionEnd - Process DbgRegionEnd.
1011void DebugInfoFinder::processRegionEnd(DbgRegionEndInst *DRE) {
Devang Patele802f1c2009-07-30 17:30:23 +00001012 GlobalVariable *SP = dyn_cast<GlobalVariable>(DRE->getContext());
Devang Patel98c65172009-07-30 18:25:15 +00001013 processSubprogram(DISubprogram(SP));
Devang Patele802f1c2009-07-30 17:30:23 +00001014}
1015
Devang Patelb4d31302009-07-31 18:18:52 +00001016/// processDeclare - Process DbgDeclareInst.
1017void DebugInfoFinder::processDeclare(DbgDeclareInst *DDI) {
1018 DIVariable DV(cast<GlobalVariable>(DDI->getVariable()));
1019 if (DV.isNull())
1020 return;
1021
1022 if (!NodesSeen.insert(DV.getGV()))
1023 return;
1024
1025 addCompileUnit(DV.getCompileUnit());
1026 processType(DV.getType());
1027}
1028
Devang Patel72bcdb62009-08-10 22:09:58 +00001029/// addType - Add type into Tys.
1030bool DebugInfoFinder::addType(DIType DT) {
1031 if (DT.isNull())
1032 return false;
1033
1034 if (!NodesSeen.insert(DT.getGV()))
1035 return false;
1036
1037 TYs.push_back(DT.getGV());
1038 return true;
1039}
1040
Devang Pateld2f79a12009-07-28 19:55:13 +00001041/// addCompileUnit - Add compile unit into CUs.
Devang Patel98c65172009-07-30 18:25:15 +00001042bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
Devang Pateld2f79a12009-07-28 19:55:13 +00001043 if (CU.isNull())
1044 return false;
1045
1046 if (!NodesSeen.insert(CU.getGV()))
1047 return false;
1048
1049 CUs.push_back(CU.getGV());
1050 return true;
1051}
1052
1053/// addGlobalVariable - Add global variable into GVs.
Devang Patel98c65172009-07-30 18:25:15 +00001054bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
Devang Pateld2f79a12009-07-28 19:55:13 +00001055 if (DIG.isNull())
1056 return false;
1057
1058 if (!NodesSeen.insert(DIG.getGV()))
1059 return false;
1060
1061 GVs.push_back(DIG.getGV());
1062 return true;
1063}
1064
1065// addSubprogram - Add subprgoram into SPs.
Devang Patel98c65172009-07-30 18:25:15 +00001066bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
Devang Pateld2f79a12009-07-28 19:55:13 +00001067 if (SP.isNull())
1068 return false;
1069
1070 if (!NodesSeen.insert(SP.getGV()))
1071 return false;
1072
1073 SPs.push_back(SP.getGV());
1074 return true;
1075}
1076
Torok Edwin620f2802008-12-16 09:07:36 +00001077namespace llvm {
Bill Wendlingdc817b62009-05-14 18:26:15 +00001078 /// findStopPoint - Find the stoppoint coressponding to this instruction, that
1079 /// is the stoppoint that dominates this instruction.
1080 const DbgStopPointInst *findStopPoint(const Instruction *Inst) {
Torok Edwin620f2802008-12-16 09:07:36 +00001081 if (const DbgStopPointInst *DSI = dyn_cast<DbgStopPointInst>(Inst))
1082 return DSI;
1083
1084 const BasicBlock *BB = Inst->getParent();
1085 BasicBlock::const_iterator I = Inst, B;
Bill Wendlingdc817b62009-05-14 18:26:15 +00001086 while (BB) {
Torok Edwin620f2802008-12-16 09:07:36 +00001087 B = BB->begin();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001088
Torok Edwin620f2802008-12-16 09:07:36 +00001089 // A BB consisting only of a terminator can't have a stoppoint.
Bill Wendlingdc817b62009-05-14 18:26:15 +00001090 while (I != B) {
1091 --I;
1092 if (const DbgStopPointInst *DSI = dyn_cast<DbgStopPointInst>(I))
1093 return DSI;
Torok Edwin620f2802008-12-16 09:07:36 +00001094 }
Bill Wendlingdc817b62009-05-14 18:26:15 +00001095
1096 // This BB didn't have a stoppoint: if there is only one predecessor, look
1097 // for a stoppoint there. We could use getIDom(), but that would require
1098 // dominator info.
Torok Edwin620f2802008-12-16 09:07:36 +00001099 BB = I->getParent()->getUniquePredecessor();
1100 if (BB)
1101 I = BB->getTerminator();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001102 }
1103
Torok Edwin620f2802008-12-16 09:07:36 +00001104 return 0;
1105 }
1106
Bill Wendlingdc817b62009-05-14 18:26:15 +00001107 /// findBBStopPoint - Find the stoppoint corresponding to first real
1108 /// (non-debug intrinsic) instruction in this Basic Block, and return the
1109 /// stoppoint for it.
1110 const DbgStopPointInst *findBBStopPoint(const BasicBlock *BB) {
1111 for(BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
Torok Edwin620f2802008-12-16 09:07:36 +00001112 if (const DbgStopPointInst *DSI = dyn_cast<DbgStopPointInst>(I))
1113 return DSI;
Bill Wendlingdc817b62009-05-14 18:26:15 +00001114
1115 // Fallback to looking for stoppoint of unique predecessor. Useful if this
1116 // BB contains no stoppoints, but unique predecessor does.
Torok Edwin620f2802008-12-16 09:07:36 +00001117 BB = BB->getUniquePredecessor();
1118 if (BB)
1119 return findStopPoint(BB->getTerminator());
Bill Wendlingdc817b62009-05-14 18:26:15 +00001120
Torok Edwin620f2802008-12-16 09:07:36 +00001121 return 0;
1122 }
1123
Bill Wendlingdc817b62009-05-14 18:26:15 +00001124 Value *findDbgGlobalDeclare(GlobalVariable *V) {
Torok Edwinff7d0e92009-03-10 13:41:26 +00001125 const Module *M = V->getParent();
Owen Anderson99035272009-07-07 17:12:53 +00001126
Torok Edwinff7d0e92009-03-10 13:41:26 +00001127 const Type *Ty = M->getTypeByName("llvm.dbg.global_variable.type");
Bill Wendlingdc817b62009-05-14 18:26:15 +00001128 if (!Ty) return 0;
1129
Owen Andersondebcb012009-07-29 22:17:13 +00001130 Ty = PointerType::get(Ty, 0);
Torok Edwinff7d0e92009-03-10 13:41:26 +00001131
1132 Value *Val = V->stripPointerCasts();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001133 for (Value::use_iterator I = Val->use_begin(), E = Val->use_end();
Torok Edwinff7d0e92009-03-10 13:41:26 +00001134 I != E; ++I) {
1135 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(I)) {
1136 if (CE->getOpcode() == Instruction::BitCast) {
1137 Value *VV = CE;
Bill Wendlingdc817b62009-05-14 18:26:15 +00001138
1139 while (VV->hasOneUse())
Torok Edwinff7d0e92009-03-10 13:41:26 +00001140 VV = *VV->use_begin();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001141
Torok Edwinff7d0e92009-03-10 13:41:26 +00001142 if (VV->getType() == Ty)
1143 return VV;
1144 }
1145 }
1146 }
1147
1148 if (Val->getType() == Ty)
1149 return Val;
Bill Wendlingdc817b62009-05-14 18:26:15 +00001150
Torok Edwinff7d0e92009-03-10 13:41:26 +00001151 return 0;
1152 }
1153
Bill Wendlingdc817b62009-05-14 18:26:15 +00001154 /// Finds the llvm.dbg.declare intrinsic corresponding to this value if any.
Torok Edwin620f2802008-12-16 09:07:36 +00001155 /// It looks through pointer casts too.
Bill Wendlingdc817b62009-05-14 18:26:15 +00001156 const DbgDeclareInst *findDbgDeclare(const Value *V, bool stripCasts) {
Torok Edwin620f2802008-12-16 09:07:36 +00001157 if (stripCasts) {
1158 V = V->stripPointerCasts();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001159
Torok Edwin620f2802008-12-16 09:07:36 +00001160 // Look for the bitcast.
1161 for (Value::use_const_iterator I = V->use_begin(), E =V->use_end();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001162 I != E; ++I)
Torok Edwin620f2802008-12-16 09:07:36 +00001163 if (isa<BitCastInst>(I))
1164 return findDbgDeclare(*I, false);
Bill Wendlingdc817b62009-05-14 18:26:15 +00001165
Torok Edwin620f2802008-12-16 09:07:36 +00001166 return 0;
1167 }
1168
Bill Wendlingdc817b62009-05-14 18:26:15 +00001169 // Find llvm.dbg.declare among uses of the instruction.
Torok Edwin620f2802008-12-16 09:07:36 +00001170 for (Value::use_const_iterator I = V->use_begin(), E =V->use_end();
Bill Wendlingdc817b62009-05-14 18:26:15 +00001171 I != E; ++I)
Torok Edwin620f2802008-12-16 09:07:36 +00001172 if (const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(I))
1173 return DDI;
Bill Wendlingdc817b62009-05-14 18:26:15 +00001174
Torok Edwin620f2802008-12-16 09:07:36 +00001175 return 0;
1176 }
Torok Edwinff7d0e92009-03-10 13:41:26 +00001177
Bill Wendlingdc817b62009-05-14 18:26:15 +00001178 bool getLocationInfo(const Value *V, std::string &DisplayName,
1179 std::string &Type, unsigned &LineNo, std::string &File,
1180 std::string &Dir) {
Torok Edwinff7d0e92009-03-10 13:41:26 +00001181 DICompileUnit Unit;
1182 DIType TypeD;
Bill Wendlingdc817b62009-05-14 18:26:15 +00001183
Torok Edwinff7d0e92009-03-10 13:41:26 +00001184 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(const_cast<Value*>(V))) {
1185 Value *DIGV = findDbgGlobalDeclare(GV);
Bill Wendlingdc817b62009-05-14 18:26:15 +00001186 if (!DIGV) return false;
Torok Edwinff7d0e92009-03-10 13:41:26 +00001187 DIGlobalVariable Var(cast<GlobalVariable>(DIGV));
Bill Wendlingdc817b62009-05-14 18:26:15 +00001188
Bill Wendling0582ae92009-03-13 04:39:26 +00001189 Var.getDisplayName(DisplayName);
Torok Edwinff7d0e92009-03-10 13:41:26 +00001190 LineNo = Var.getLineNumber();
1191 Unit = Var.getCompileUnit();
1192 TypeD = Var.getType();
1193 } else {
1194 const DbgDeclareInst *DDI = findDbgDeclare(V);
Bill Wendlingdc817b62009-05-14 18:26:15 +00001195 if (!DDI) return false;
Torok Edwinff7d0e92009-03-10 13:41:26 +00001196 DIVariable Var(cast<GlobalVariable>(DDI->getVariable()));
Bill Wendlingdc817b62009-05-14 18:26:15 +00001197
Bill Wendling0582ae92009-03-13 04:39:26 +00001198 Var.getName(DisplayName);
Torok Edwinff7d0e92009-03-10 13:41:26 +00001199 LineNo = Var.getLineNumber();
1200 Unit = Var.getCompileUnit();
1201 TypeD = Var.getType();
1202 }
Bill Wendlingdc817b62009-05-14 18:26:15 +00001203
Bill Wendling0582ae92009-03-13 04:39:26 +00001204 TypeD.getName(Type);
1205 Unit.getFilename(File);
1206 Unit.getDirectory(Dir);
Torok Edwinff7d0e92009-03-10 13:41:26 +00001207 return true;
1208 }
Devang Patel13e16b62009-06-26 01:49:18 +00001209
Devang Patel9e529c32009-07-02 01:15:24 +00001210 /// isValidDebugInfoIntrinsic - Return true if SPI is a valid debug
Devang Pateldfc85362009-07-02 17:17:03 +00001211 /// info intrinsic.
Devang Patel9e529c32009-07-02 01:15:24 +00001212 bool isValidDebugInfoIntrinsic(DbgStopPointInst &SPI,
1213 CodeGenOpt::Level OptLev) {
1214 return DIDescriptor::ValidDebugInfo(SPI.getContext(), OptLev);
1215 }
1216
1217 /// isValidDebugInfoIntrinsic - Return true if FSI is a valid debug
Devang Pateldfc85362009-07-02 17:17:03 +00001218 /// info intrinsic.
Devang Patel9e529c32009-07-02 01:15:24 +00001219 bool isValidDebugInfoIntrinsic(DbgFuncStartInst &FSI,
1220 CodeGenOpt::Level OptLev) {
1221 return DIDescriptor::ValidDebugInfo(FSI.getSubprogram(), OptLev);
1222 }
1223
1224 /// isValidDebugInfoIntrinsic - Return true if RSI is a valid debug
Devang Pateldfc85362009-07-02 17:17:03 +00001225 /// info intrinsic.
Devang Patel9e529c32009-07-02 01:15:24 +00001226 bool isValidDebugInfoIntrinsic(DbgRegionStartInst &RSI,
1227 CodeGenOpt::Level OptLev) {
1228 return DIDescriptor::ValidDebugInfo(RSI.getContext(), OptLev);
1229 }
1230
1231 /// isValidDebugInfoIntrinsic - Return true if REI is a valid debug
Devang Pateldfc85362009-07-02 17:17:03 +00001232 /// info intrinsic.
Devang Patel9e529c32009-07-02 01:15:24 +00001233 bool isValidDebugInfoIntrinsic(DbgRegionEndInst &REI,
1234 CodeGenOpt::Level OptLev) {
1235 return DIDescriptor::ValidDebugInfo(REI.getContext(), OptLev);
1236 }
1237
1238
1239 /// isValidDebugInfoIntrinsic - Return true if DI is a valid debug
Devang Pateldfc85362009-07-02 17:17:03 +00001240 /// info intrinsic.
Devang Patel9e529c32009-07-02 01:15:24 +00001241 bool isValidDebugInfoIntrinsic(DbgDeclareInst &DI,
1242 CodeGenOpt::Level OptLev) {
1243 return DIDescriptor::ValidDebugInfo(DI.getVariable(), OptLev);
1244 }
1245
1246 /// ExtractDebugLocation - Extract debug location information
1247 /// from llvm.dbg.stoppoint intrinsic.
1248 DebugLoc ExtractDebugLocation(DbgStopPointInst &SPI,
Devang Patel9e529c32009-07-02 01:15:24 +00001249 DebugLocTracker &DebugLocInfo) {
1250 DebugLoc DL;
1251 Value *Context = SPI.getContext();
Devang Patel9e529c32009-07-02 01:15:24 +00001252
1253 // If this location is already tracked then use it.
1254 DebugLocTuple Tuple(cast<GlobalVariable>(Context), SPI.getLine(),
1255 SPI.getColumn());
1256 DenseMap<DebugLocTuple, unsigned>::iterator II
1257 = DebugLocInfo.DebugIdMap.find(Tuple);
1258 if (II != DebugLocInfo.DebugIdMap.end())
1259 return DebugLoc::get(II->second);
1260
1261 // Add a new location entry.
1262 unsigned Id = DebugLocInfo.DebugLocations.size();
1263 DebugLocInfo.DebugLocations.push_back(Tuple);
1264 DebugLocInfo.DebugIdMap[Tuple] = Id;
1265
1266 return DebugLoc::get(Id);
1267 }
1268
1269 /// ExtractDebugLocation - Extract debug location information
1270 /// from llvm.dbg.func_start intrinsic.
1271 DebugLoc ExtractDebugLocation(DbgFuncStartInst &FSI,
Devang Patel9e529c32009-07-02 01:15:24 +00001272 DebugLocTracker &DebugLocInfo) {
1273 DebugLoc DL;
1274 Value *SP = FSI.getSubprogram();
Devang Patel9e529c32009-07-02 01:15:24 +00001275
1276 DISubprogram Subprogram(cast<GlobalVariable>(SP));
1277 unsigned Line = Subprogram.getLineNumber();
1278 DICompileUnit CU(Subprogram.getCompileUnit());
1279
1280 // If this location is already tracked then use it.
1281 DebugLocTuple Tuple(CU.getGV(), Line, /* Column */ 0);
1282 DenseMap<DebugLocTuple, unsigned>::iterator II
1283 = DebugLocInfo.DebugIdMap.find(Tuple);
1284 if (II != DebugLocInfo.DebugIdMap.end())
1285 return DebugLoc::get(II->second);
1286
1287 // Add a new location entry.
1288 unsigned Id = DebugLocInfo.DebugLocations.size();
1289 DebugLocInfo.DebugLocations.push_back(Tuple);
1290 DebugLocInfo.DebugIdMap[Tuple] = Id;
1291
1292 return DebugLoc::get(Id);
1293 }
1294
1295 /// isInlinedFnStart - Return true if FSI is starting an inlined function.
1296 bool isInlinedFnStart(DbgFuncStartInst &FSI, const Function *CurrentFn) {
1297 DISubprogram Subprogram(cast<GlobalVariable>(FSI.getSubprogram()));
1298 if (Subprogram.describes(CurrentFn))
1299 return false;
1300
1301 return true;
1302 }
1303
1304 /// isInlinedFnEnd - Return true if REI is ending an inlined function.
1305 bool isInlinedFnEnd(DbgRegionEndInst &REI, const Function *CurrentFn) {
1306 DISubprogram Subprogram(cast<GlobalVariable>(REI.getContext()));
1307 if (Subprogram.isNull() || Subprogram.describes(CurrentFn))
1308 return false;
1309
1310 return true;
1311 }
1312
Torok Edwin620f2802008-12-16 09:07:36 +00001313}