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Chris Lattnercaee0dc2007-04-22 06:23:29 +00001//===- BitcodeReader.cpp - Internal BitcodeReader implementation ----------===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner4ee451d2007-12-29 20:36:04 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Chris Lattnercaee0dc2007-04-22 06:23:29 +00007//
8//===----------------------------------------------------------------------===//
Chris Lattnercaee0dc2007-04-22 06:23:29 +00009
Chris Lattnerc453f762007-04-29 07:54:31 +000010#include "llvm/Bitcode/ReaderWriter.h"
Chris Lattnercaee0dc2007-04-22 06:23:29 +000011#include "BitcodeReader.h"
Chandler Carruthd04a8d42012-12-03 16:50:05 +000012#include "llvm/ADT/SmallString.h"
13#include "llvm/ADT/SmallVector.h"
14#include "llvm/AutoUpgrade.h"
Chandler Carruth0b8c9a82013-01-02 11:36:10 +000015#include "llvm/IR/Constants.h"
16#include "llvm/IR/DerivedTypes.h"
17#include "llvm/IR/InlineAsm.h"
18#include "llvm/IR/IntrinsicInst.h"
19#include "llvm/IR/Module.h"
20#include "llvm/IR/OperandTraits.h"
21#include "llvm/IR/Operator.h"
Derek Schuff2ea93872012-02-06 22:30:29 +000022#include "llvm/Support/DataStream.h"
Chris Lattner0eef0802007-04-24 04:04:35 +000023#include "llvm/Support/MathExtras.h"
Chris Lattnerc453f762007-04-29 07:54:31 +000024#include "llvm/Support/MemoryBuffer.h"
Chris Lattnercaee0dc2007-04-22 06:23:29 +000025using namespace llvm;
26
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +000027enum {
28 SWITCH_INST_MAGIC = 0x4B5 // May 2012 => 1205 => Hex
29};
30
Rafael Espindola47f79bb2012-01-02 07:49:53 +000031void BitcodeReader::materializeForwardReferencedFunctions() {
32 while (!BlockAddrFwdRefs.empty()) {
33 Function *F = BlockAddrFwdRefs.begin()->first;
34 F->Materialize();
35 }
36}
37
Chris Lattnerb348bb82007-05-18 04:02:46 +000038void BitcodeReader::FreeState() {
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +000039 if (BufferOwned)
40 delete Buffer;
Chris Lattnerb348bb82007-05-18 04:02:46 +000041 Buffer = 0;
Chris Lattner1afcace2011-07-09 17:41:24 +000042 std::vector<Type*>().swap(TypeList);
Chris Lattnerb348bb82007-05-18 04:02:46 +000043 ValueList.clear();
Devang Pateld5ac4042009-08-04 06:00:18 +000044 MDValueList.clear();
Daniel Dunbara279bc32009-09-20 02:20:51 +000045
Bill Wendling99faa3b2012-12-07 23:16:57 +000046 std::vector<AttributeSet>().swap(MAttributes);
Chris Lattnerb348bb82007-05-18 04:02:46 +000047 std::vector<BasicBlock*>().swap(FunctionBBs);
48 std::vector<Function*>().swap(FunctionsWithBodies);
49 DeferredFunctionInfo.clear();
Dan Gohman19538d12010-07-20 21:42:28 +000050 MDKindMap.clear();
Benjamin Kramer122f5e52012-09-21 14:34:31 +000051
52 assert(BlockAddrFwdRefs.empty() && "Unresolved blockaddress fwd references");
Chris Lattnerc453f762007-04-29 07:54:31 +000053}
54
Chris Lattner48c85b82007-05-04 03:30:17 +000055//===----------------------------------------------------------------------===//
56// Helper functions to implement forward reference resolution, etc.
57//===----------------------------------------------------------------------===//
Chris Lattnerc453f762007-04-29 07:54:31 +000058
Chris Lattnercaee0dc2007-04-22 06:23:29 +000059/// ConvertToString - Convert a string from a record into an std::string, return
60/// true on failure.
Chris Lattner0b2482a2007-04-23 21:26:05 +000061template<typename StrTy>
Benjamin Kramerf52aea82012-05-28 14:10:31 +000062static bool ConvertToString(ArrayRef<uint64_t> Record, unsigned Idx,
Chris Lattner0b2482a2007-04-23 21:26:05 +000063 StrTy &Result) {
Chris Lattner15e6d172007-05-04 19:11:41 +000064 if (Idx > Record.size())
Chris Lattnercaee0dc2007-04-22 06:23:29 +000065 return true;
Daniel Dunbara279bc32009-09-20 02:20:51 +000066
Chris Lattner15e6d172007-05-04 19:11:41 +000067 for (unsigned i = Idx, e = Record.size(); i != e; ++i)
68 Result += (char)Record[i];
Chris Lattnercaee0dc2007-04-22 06:23:29 +000069 return false;
70}
71
72static GlobalValue::LinkageTypes GetDecodedLinkage(unsigned Val) {
73 switch (Val) {
74 default: // Map unknown/new linkages to external
Bill Wendling3d10a5a2009-07-20 01:03:30 +000075 case 0: return GlobalValue::ExternalLinkage;
76 case 1: return GlobalValue::WeakAnyLinkage;
77 case 2: return GlobalValue::AppendingLinkage;
78 case 3: return GlobalValue::InternalLinkage;
79 case 4: return GlobalValue::LinkOnceAnyLinkage;
80 case 5: return GlobalValue::DLLImportLinkage;
81 case 6: return GlobalValue::DLLExportLinkage;
82 case 7: return GlobalValue::ExternalWeakLinkage;
83 case 8: return GlobalValue::CommonLinkage;
84 case 9: return GlobalValue::PrivateLinkage;
Duncan Sands667d4b82009-03-07 15:45:40 +000085 case 10: return GlobalValue::WeakODRLinkage;
86 case 11: return GlobalValue::LinkOnceODRLinkage;
Chris Lattner266c7bb2009-04-13 05:44:34 +000087 case 12: return GlobalValue::AvailableExternallyLinkage;
Bill Wendling3d10a5a2009-07-20 01:03:30 +000088 case 13: return GlobalValue::LinkerPrivateLinkage;
Bill Wendling5e721d72010-07-01 21:55:59 +000089 case 14: return GlobalValue::LinkerPrivateWeakLinkage;
Bill Wendling32811be2012-08-17 18:33:14 +000090 case 15: return GlobalValue::LinkOnceODRAutoHideLinkage;
Chris Lattnercaee0dc2007-04-22 06:23:29 +000091 }
92}
93
94static GlobalValue::VisibilityTypes GetDecodedVisibility(unsigned Val) {
95 switch (Val) {
96 default: // Map unknown visibilities to default.
97 case 0: return GlobalValue::DefaultVisibility;
98 case 1: return GlobalValue::HiddenVisibility;
Anton Korobeynikov9cd3ccf2007-04-29 20:56:48 +000099 case 2: return GlobalValue::ProtectedVisibility;
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000100 }
101}
102
Hans Wennborgce718ff2012-06-23 11:37:03 +0000103static GlobalVariable::ThreadLocalMode GetDecodedThreadLocalMode(unsigned Val) {
104 switch (Val) {
105 case 0: return GlobalVariable::NotThreadLocal;
106 default: // Map unknown non-zero value to general dynamic.
107 case 1: return GlobalVariable::GeneralDynamicTLSModel;
108 case 2: return GlobalVariable::LocalDynamicTLSModel;
109 case 3: return GlobalVariable::InitialExecTLSModel;
110 case 4: return GlobalVariable::LocalExecTLSModel;
111 }
112}
113
Chris Lattnerf581c3b2007-04-24 07:07:11 +0000114static int GetDecodedCastOpcode(unsigned Val) {
115 switch (Val) {
116 default: return -1;
117 case bitc::CAST_TRUNC : return Instruction::Trunc;
118 case bitc::CAST_ZEXT : return Instruction::ZExt;
119 case bitc::CAST_SEXT : return Instruction::SExt;
120 case bitc::CAST_FPTOUI : return Instruction::FPToUI;
121 case bitc::CAST_FPTOSI : return Instruction::FPToSI;
122 case bitc::CAST_UITOFP : return Instruction::UIToFP;
123 case bitc::CAST_SITOFP : return Instruction::SIToFP;
124 case bitc::CAST_FPTRUNC : return Instruction::FPTrunc;
125 case bitc::CAST_FPEXT : return Instruction::FPExt;
126 case bitc::CAST_PTRTOINT: return Instruction::PtrToInt;
127 case bitc::CAST_INTTOPTR: return Instruction::IntToPtr;
128 case bitc::CAST_BITCAST : return Instruction::BitCast;
129 }
130}
Chris Lattnerdb125cf2011-07-18 04:54:35 +0000131static int GetDecodedBinaryOpcode(unsigned Val, Type *Ty) {
Chris Lattnerf581c3b2007-04-24 07:07:11 +0000132 switch (Val) {
133 default: return -1;
Dan Gohmanae3a0be2009-06-04 22:49:04 +0000134 case bitc::BINOP_ADD:
Duncan Sandsb0bc6c32010-02-15 16:12:20 +0000135 return Ty->isFPOrFPVectorTy() ? Instruction::FAdd : Instruction::Add;
Dan Gohmanae3a0be2009-06-04 22:49:04 +0000136 case bitc::BINOP_SUB:
Duncan Sandsb0bc6c32010-02-15 16:12:20 +0000137 return Ty->isFPOrFPVectorTy() ? Instruction::FSub : Instruction::Sub;
Dan Gohmanae3a0be2009-06-04 22:49:04 +0000138 case bitc::BINOP_MUL:
Duncan Sandsb0bc6c32010-02-15 16:12:20 +0000139 return Ty->isFPOrFPVectorTy() ? Instruction::FMul : Instruction::Mul;
Chris Lattnerf581c3b2007-04-24 07:07:11 +0000140 case bitc::BINOP_UDIV: return Instruction::UDiv;
141 case bitc::BINOP_SDIV:
Duncan Sandsb0bc6c32010-02-15 16:12:20 +0000142 return Ty->isFPOrFPVectorTy() ? Instruction::FDiv : Instruction::SDiv;
Chris Lattnerf581c3b2007-04-24 07:07:11 +0000143 case bitc::BINOP_UREM: return Instruction::URem;
144 case bitc::BINOP_SREM:
Duncan Sandsb0bc6c32010-02-15 16:12:20 +0000145 return Ty->isFPOrFPVectorTy() ? Instruction::FRem : Instruction::SRem;
Chris Lattnerf581c3b2007-04-24 07:07:11 +0000146 case bitc::BINOP_SHL: return Instruction::Shl;
147 case bitc::BINOP_LSHR: return Instruction::LShr;
148 case bitc::BINOP_ASHR: return Instruction::AShr;
149 case bitc::BINOP_AND: return Instruction::And;
150 case bitc::BINOP_OR: return Instruction::Or;
151 case bitc::BINOP_XOR: return Instruction::Xor;
152 }
153}
154
Eli Friedmanff030482011-07-28 21:48:00 +0000155static AtomicRMWInst::BinOp GetDecodedRMWOperation(unsigned Val) {
156 switch (Val) {
157 default: return AtomicRMWInst::BAD_BINOP;
158 case bitc::RMW_XCHG: return AtomicRMWInst::Xchg;
159 case bitc::RMW_ADD: return AtomicRMWInst::Add;
160 case bitc::RMW_SUB: return AtomicRMWInst::Sub;
161 case bitc::RMW_AND: return AtomicRMWInst::And;
162 case bitc::RMW_NAND: return AtomicRMWInst::Nand;
163 case bitc::RMW_OR: return AtomicRMWInst::Or;
164 case bitc::RMW_XOR: return AtomicRMWInst::Xor;
165 case bitc::RMW_MAX: return AtomicRMWInst::Max;
166 case bitc::RMW_MIN: return AtomicRMWInst::Min;
167 case bitc::RMW_UMAX: return AtomicRMWInst::UMax;
168 case bitc::RMW_UMIN: return AtomicRMWInst::UMin;
169 }
170}
171
Eli Friedman47f35132011-07-25 23:16:38 +0000172static AtomicOrdering GetDecodedOrdering(unsigned Val) {
173 switch (Val) {
174 case bitc::ORDERING_NOTATOMIC: return NotAtomic;
175 case bitc::ORDERING_UNORDERED: return Unordered;
176 case bitc::ORDERING_MONOTONIC: return Monotonic;
177 case bitc::ORDERING_ACQUIRE: return Acquire;
178 case bitc::ORDERING_RELEASE: return Release;
179 case bitc::ORDERING_ACQREL: return AcquireRelease;
180 default: // Map unknown orderings to sequentially-consistent.
181 case bitc::ORDERING_SEQCST: return SequentiallyConsistent;
182 }
183}
184
185static SynchronizationScope GetDecodedSynchScope(unsigned Val) {
186 switch (Val) {
187 case bitc::SYNCHSCOPE_SINGLETHREAD: return SingleThread;
188 default: // Map unknown scopes to cross-thread.
189 case bitc::SYNCHSCOPE_CROSSTHREAD: return CrossThread;
190 }
191}
192
Gabor Greifefe65362008-05-10 08:32:32 +0000193namespace llvm {
Chris Lattner522b7b12007-04-24 05:48:56 +0000194namespace {
195 /// @brief A class for maintaining the slot number definition
196 /// as a placeholder for the actual definition for forward constants defs.
197 class ConstantPlaceHolder : public ConstantExpr {
Craig Topper86a1c322012-09-15 17:09:36 +0000198 void operator=(const ConstantPlaceHolder &) LLVM_DELETED_FUNCTION;
Gabor Greif051a9502008-04-06 20:25:17 +0000199 public:
200 // allocate space for exactly one operand
201 void *operator new(size_t s) {
202 return User::operator new(s, 1);
203 }
Chris Lattnerdb125cf2011-07-18 04:54:35 +0000204 explicit ConstantPlaceHolder(Type *Ty, LLVMContext& Context)
Gabor Greifefe65362008-05-10 08:32:32 +0000205 : ConstantExpr(Ty, Instruction::UserOp1, &Op<0>(), 1) {
Owen Anderson1d0be152009-08-13 21:58:54 +0000206 Op<0>() = UndefValue::get(Type::getInt32Ty(Context));
Chris Lattner522b7b12007-04-24 05:48:56 +0000207 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000208
Chris Lattnerea693df2008-08-21 02:34:16 +0000209 /// @brief Methods to support type inquiry through isa, cast, and dyn_cast.
Chris Lattnerea693df2008-08-21 02:34:16 +0000210 static bool classof(const Value *V) {
Daniel Dunbara279bc32009-09-20 02:20:51 +0000211 return isa<ConstantExpr>(V) &&
Chris Lattnerea693df2008-08-21 02:34:16 +0000212 cast<ConstantExpr>(V)->getOpcode() == Instruction::UserOp1;
213 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000214
215
Gabor Greifefe65362008-05-10 08:32:32 +0000216 /// Provide fast operand accessors
Chris Lattner46e77402009-03-31 22:55:09 +0000217 //DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
Chris Lattner522b7b12007-04-24 05:48:56 +0000218 };
219}
220
Chris Lattner46e77402009-03-31 22:55:09 +0000221// FIXME: can we inherit this from ConstantExpr?
Gabor Greifefe65362008-05-10 08:32:32 +0000222template <>
Jay Foad67c619b2011-01-11 15:07:38 +0000223struct OperandTraits<ConstantPlaceHolder> :
224 public FixedNumOperandTraits<ConstantPlaceHolder, 1> {
Gabor Greifefe65362008-05-10 08:32:32 +0000225};
Gabor Greifefe65362008-05-10 08:32:32 +0000226}
227
Chris Lattner46e77402009-03-31 22:55:09 +0000228
229void BitcodeReaderValueList::AssignValue(Value *V, unsigned Idx) {
230 if (Idx == size()) {
231 push_back(V);
232 return;
233 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000234
Chris Lattner46e77402009-03-31 22:55:09 +0000235 if (Idx >= size())
236 resize(Idx+1);
Daniel Dunbara279bc32009-09-20 02:20:51 +0000237
Chris Lattner46e77402009-03-31 22:55:09 +0000238 WeakVH &OldV = ValuePtrs[Idx];
239 if (OldV == 0) {
240 OldV = V;
241 return;
242 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000243
Chris Lattner46e77402009-03-31 22:55:09 +0000244 // Handle constants and non-constants (e.g. instrs) differently for
245 // efficiency.
246 if (Constant *PHC = dyn_cast<Constant>(&*OldV)) {
247 ResolveConstants.push_back(std::make_pair(PHC, Idx));
248 OldV = V;
249 } else {
250 // If there was a forward reference to this value, replace it.
251 Value *PrevVal = OldV;
252 OldV->replaceAllUsesWith(V);
253 delete PrevVal;
Gabor Greifefe65362008-05-10 08:32:32 +0000254 }
255}
Daniel Dunbara279bc32009-09-20 02:20:51 +0000256
Gabor Greifefe65362008-05-10 08:32:32 +0000257
Chris Lattner522b7b12007-04-24 05:48:56 +0000258Constant *BitcodeReaderValueList::getConstantFwdRef(unsigned Idx,
Chris Lattnerdb125cf2011-07-18 04:54:35 +0000259 Type *Ty) {
Chris Lattner46e77402009-03-31 22:55:09 +0000260 if (Idx >= size())
Gabor Greifefe65362008-05-10 08:32:32 +0000261 resize(Idx + 1);
Chris Lattner522b7b12007-04-24 05:48:56 +0000262
Chris Lattner46e77402009-03-31 22:55:09 +0000263 if (Value *V = ValuePtrs[Idx]) {
Chris Lattnera7c49aa2007-05-01 07:01:57 +0000264 assert(Ty == V->getType() && "Type mismatch in constant table!");
265 return cast<Constant>(V);
Chris Lattnerf581c3b2007-04-24 07:07:11 +0000266 }
Chris Lattner522b7b12007-04-24 05:48:56 +0000267
268 // Create and return a placeholder, which will later be RAUW'd.
Owen Anderson74a77812009-07-07 20:18:58 +0000269 Constant *C = new ConstantPlaceHolder(Ty, Context);
Chris Lattner46e77402009-03-31 22:55:09 +0000270 ValuePtrs[Idx] = C;
Chris Lattner522b7b12007-04-24 05:48:56 +0000271 return C;
272}
273
Chris Lattnerdb125cf2011-07-18 04:54:35 +0000274Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty) {
Chris Lattner46e77402009-03-31 22:55:09 +0000275 if (Idx >= size())
Gabor Greifefe65362008-05-10 08:32:32 +0000276 resize(Idx + 1);
Daniel Dunbara279bc32009-09-20 02:20:51 +0000277
Chris Lattner46e77402009-03-31 22:55:09 +0000278 if (Value *V = ValuePtrs[Idx]) {
Chris Lattnera7c49aa2007-05-01 07:01:57 +0000279 assert((Ty == 0 || Ty == V->getType()) && "Type mismatch in value table!");
280 return V;
281 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000282
Chris Lattner01ff65f2007-05-02 05:16:49 +0000283 // No type specified, must be invalid reference.
284 if (Ty == 0) return 0;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000285
Chris Lattnera7c49aa2007-05-01 07:01:57 +0000286 // Create and return a placeholder, which will later be RAUW'd.
287 Value *V = new Argument(Ty);
Chris Lattner46e77402009-03-31 22:55:09 +0000288 ValuePtrs[Idx] = V;
Chris Lattnera7c49aa2007-05-01 07:01:57 +0000289 return V;
290}
291
Chris Lattnerea693df2008-08-21 02:34:16 +0000292/// ResolveConstantForwardRefs - Once all constants are read, this method bulk
293/// resolves any forward references. The idea behind this is that we sometimes
294/// get constants (such as large arrays) which reference *many* forward ref
295/// constants. Replacing each of these causes a lot of thrashing when
296/// building/reuniquing the constant. Instead of doing this, we look at all the
297/// uses and rewrite all the place holders at once for any constant that uses
298/// a placeholder.
299void BitcodeReaderValueList::ResolveConstantForwardRefs() {
Daniel Dunbara279bc32009-09-20 02:20:51 +0000300 // Sort the values by-pointer so that they are efficient to look up with a
Chris Lattnerea693df2008-08-21 02:34:16 +0000301 // binary search.
302 std::sort(ResolveConstants.begin(), ResolveConstants.end());
Daniel Dunbara279bc32009-09-20 02:20:51 +0000303
Chris Lattnerea693df2008-08-21 02:34:16 +0000304 SmallVector<Constant*, 64> NewOps;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000305
Chris Lattnerea693df2008-08-21 02:34:16 +0000306 while (!ResolveConstants.empty()) {
Chris Lattner46e77402009-03-31 22:55:09 +0000307 Value *RealVal = operator[](ResolveConstants.back().second);
Chris Lattnerea693df2008-08-21 02:34:16 +0000308 Constant *Placeholder = ResolveConstants.back().first;
309 ResolveConstants.pop_back();
Daniel Dunbara279bc32009-09-20 02:20:51 +0000310
Chris Lattnerea693df2008-08-21 02:34:16 +0000311 // Loop over all users of the placeholder, updating them to reference the
312 // new value. If they reference more than one placeholder, update them all
313 // at once.
314 while (!Placeholder->use_empty()) {
Chris Lattnerb6135a02008-08-21 17:31:45 +0000315 Value::use_iterator UI = Placeholder->use_begin();
Gabor Greifc654d1b2010-07-09 16:01:21 +0000316 User *U = *UI;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000317
Chris Lattnerea693df2008-08-21 02:34:16 +0000318 // If the using object isn't uniqued, just update the operands. This
319 // handles instructions and initializers for global variables.
Gabor Greifc654d1b2010-07-09 16:01:21 +0000320 if (!isa<Constant>(U) || isa<GlobalValue>(U)) {
Chris Lattnerb6135a02008-08-21 17:31:45 +0000321 UI.getUse().set(RealVal);
Chris Lattnerea693df2008-08-21 02:34:16 +0000322 continue;
323 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000324
Chris Lattnerea693df2008-08-21 02:34:16 +0000325 // Otherwise, we have a constant that uses the placeholder. Replace that
326 // constant with a new constant that has *all* placeholder uses updated.
Gabor Greifc654d1b2010-07-09 16:01:21 +0000327 Constant *UserC = cast<Constant>(U);
Chris Lattnerea693df2008-08-21 02:34:16 +0000328 for (User::op_iterator I = UserC->op_begin(), E = UserC->op_end();
329 I != E; ++I) {
330 Value *NewOp;
331 if (!isa<ConstantPlaceHolder>(*I)) {
332 // Not a placeholder reference.
333 NewOp = *I;
334 } else if (*I == Placeholder) {
335 // Common case is that it just references this one placeholder.
336 NewOp = RealVal;
337 } else {
338 // Otherwise, look up the placeholder in ResolveConstants.
Daniel Dunbara279bc32009-09-20 02:20:51 +0000339 ResolveConstantsTy::iterator It =
340 std::lower_bound(ResolveConstants.begin(), ResolveConstants.end(),
Chris Lattnerea693df2008-08-21 02:34:16 +0000341 std::pair<Constant*, unsigned>(cast<Constant>(*I),
342 0));
343 assert(It != ResolveConstants.end() && It->first == *I);
Chris Lattner46e77402009-03-31 22:55:09 +0000344 NewOp = operator[](It->second);
Chris Lattnerea693df2008-08-21 02:34:16 +0000345 }
346
347 NewOps.push_back(cast<Constant>(NewOp));
348 }
349
350 // Make the new constant.
351 Constant *NewC;
352 if (ConstantArray *UserCA = dyn_cast<ConstantArray>(UserC)) {
Jay Foad26701082011-06-22 09:24:39 +0000353 NewC = ConstantArray::get(UserCA->getType(), NewOps);
Chris Lattnerea693df2008-08-21 02:34:16 +0000354 } else if (ConstantStruct *UserCS = dyn_cast<ConstantStruct>(UserC)) {
Chris Lattnerb065b062011-06-20 04:01:31 +0000355 NewC = ConstantStruct::get(UserCS->getType(), NewOps);
Chris Lattnerea693df2008-08-21 02:34:16 +0000356 } else if (isa<ConstantVector>(UserC)) {
Chris Lattner2ca5c862011-02-15 00:14:00 +0000357 NewC = ConstantVector::get(NewOps);
Nick Lewyckycb337992009-05-10 20:57:05 +0000358 } else {
359 assert(isa<ConstantExpr>(UserC) && "Must be a ConstantExpr.");
Jay Foadb81e4572011-04-13 13:46:01 +0000360 NewC = cast<ConstantExpr>(UserC)->getWithOperands(NewOps);
Chris Lattnerea693df2008-08-21 02:34:16 +0000361 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000362
Chris Lattnerea693df2008-08-21 02:34:16 +0000363 UserC->replaceAllUsesWith(NewC);
364 UserC->destroyConstant();
365 NewOps.clear();
366 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000367
Nick Lewyckycb337992009-05-10 20:57:05 +0000368 // Update all ValueHandles, they should be the only users at this point.
369 Placeholder->replaceAllUsesWith(RealVal);
Chris Lattnerea693df2008-08-21 02:34:16 +0000370 delete Placeholder;
371 }
372}
373
Devang Pateld5ac4042009-08-04 06:00:18 +0000374void BitcodeReaderMDValueList::AssignValue(Value *V, unsigned Idx) {
375 if (Idx == size()) {
376 push_back(V);
377 return;
378 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000379
Devang Pateld5ac4042009-08-04 06:00:18 +0000380 if (Idx >= size())
381 resize(Idx+1);
Daniel Dunbara279bc32009-09-20 02:20:51 +0000382
Devang Pateld5ac4042009-08-04 06:00:18 +0000383 WeakVH &OldV = MDValuePtrs[Idx];
384 if (OldV == 0) {
385 OldV = V;
386 return;
387 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000388
Devang Pateld5ac4042009-08-04 06:00:18 +0000389 // If there was a forward reference to this value, replace it.
Dan Gohman489b29b2010-08-20 22:02:26 +0000390 MDNode *PrevVal = cast<MDNode>(OldV);
Devang Pateld5ac4042009-08-04 06:00:18 +0000391 OldV->replaceAllUsesWith(V);
Dan Gohman489b29b2010-08-20 22:02:26 +0000392 MDNode::deleteTemporary(PrevVal);
Devang Patelc0ff8c82009-09-03 01:38:02 +0000393 // Deleting PrevVal sets Idx value in MDValuePtrs to null. Set new
394 // value for Idx.
395 MDValuePtrs[Idx] = V;
Devang Pateld5ac4042009-08-04 06:00:18 +0000396}
397
398Value *BitcodeReaderMDValueList::getValueFwdRef(unsigned Idx) {
399 if (Idx >= size())
400 resize(Idx + 1);
Daniel Dunbara279bc32009-09-20 02:20:51 +0000401
Devang Pateld5ac4042009-08-04 06:00:18 +0000402 if (Value *V = MDValuePtrs[Idx]) {
Chris Lattnercf0fe8d2009-10-05 05:54:46 +0000403 assert(V->getType()->isMetadataTy() && "Type mismatch in value table!");
Devang Pateld5ac4042009-08-04 06:00:18 +0000404 return V;
405 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000406
Devang Pateld5ac4042009-08-04 06:00:18 +0000407 // Create and return a placeholder, which will later be RAUW'd.
Jay Foadec9186b2011-04-21 19:59:31 +0000408 Value *V = MDNode::getTemporary(Context, ArrayRef<Value*>());
Devang Pateld5ac4042009-08-04 06:00:18 +0000409 MDValuePtrs[Idx] = V;
410 return V;
411}
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000412
Chris Lattner1afcace2011-07-09 17:41:24 +0000413Type *BitcodeReader::getTypeByID(unsigned ID) {
414 // The type table size is always specified correctly.
415 if (ID >= TypeList.size())
416 return 0;
Derek Schufffccf0622012-02-06 19:03:04 +0000417
Chris Lattner1afcace2011-07-09 17:41:24 +0000418 if (Type *Ty = TypeList[ID])
419 return Ty;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000420
Chris Lattner1afcace2011-07-09 17:41:24 +0000421 // If we have a forward reference, the only possible case is when it is to a
422 // named struct. Just create a placeholder for now.
Chris Lattner3ebb6492011-08-12 18:06:37 +0000423 return TypeList[ID] = StructType::create(Context);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000424}
425
Chris Lattner1afcace2011-07-09 17:41:24 +0000426
Chris Lattner48c85b82007-05-04 03:30:17 +0000427//===----------------------------------------------------------------------===//
428// Functions for parsing blocks from the bitcode file
429//===----------------------------------------------------------------------===//
430
Bill Wendlingf9271ea2013-02-04 23:32:23 +0000431
432/// \brief This fills an AttrBuilder object with the LLVM attributes that have
433/// been decoded from the given integer. This function must stay in sync with
434/// 'encodeLLVMAttributesForBitcode'.
435static void decodeLLVMAttributesForBitcode(AttrBuilder &B,
436 uint64_t EncodedAttrs) {
437 // FIXME: Remove in 4.0.
438
439 // The alignment is stored as a 16-bit raw value from bits 31--16. We shift
440 // the bits above 31 down by 11 bits.
441 unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16;
442 assert((!Alignment || isPowerOf2_32(Alignment)) &&
443 "Alignment must be a power of two.");
444
445 if (Alignment)
446 B.addAlignmentAttr(Alignment);
Kostya Serebryanyab39afa2013-02-11 08:13:54 +0000447 B.addRawValue(((EncodedAttrs & (0xfffffULL << 32)) >> 11) |
Bill Wendlingf9271ea2013-02-04 23:32:23 +0000448 (EncodedAttrs & 0xffff));
449}
450
Devang Patel05988662008-09-25 21:00:45 +0000451bool BitcodeReader::ParseAttributeBlock() {
Chris Lattnere17b6582007-05-05 00:17:00 +0000452 if (Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID))
Chris Lattner48c85b82007-05-04 03:30:17 +0000453 return Error("Malformed block record");
Daniel Dunbara279bc32009-09-20 02:20:51 +0000454
Devang Patel19c87462008-09-26 22:53:05 +0000455 if (!MAttributes.empty())
Chris Lattner48c85b82007-05-04 03:30:17 +0000456 return Error("Multiple PARAMATTR blocks found!");
Daniel Dunbara279bc32009-09-20 02:20:51 +0000457
Chris Lattner48c85b82007-05-04 03:30:17 +0000458 SmallVector<uint64_t, 64> Record;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000459
Bill Wendling0c2f0ff2013-01-27 00:36:48 +0000460 SmallVector<AttributeSet, 8> Attrs;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000461
Chris Lattner48c85b82007-05-04 03:30:17 +0000462 // Read all the records.
463 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +0000464 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +0000465
Chris Lattner5a4251c2013-01-20 02:13:19 +0000466 switch (Entry.Kind) {
467 case BitstreamEntry::SubBlock: // Handled for us already.
468 case BitstreamEntry::Error:
469 return Error("Error at end of PARAMATTR block");
470 case BitstreamEntry::EndBlock:
Chris Lattner48c85b82007-05-04 03:30:17 +0000471 return false;
Chris Lattner5a4251c2013-01-20 02:13:19 +0000472 case BitstreamEntry::Record:
473 // The interesting case.
474 break;
Chris Lattner48c85b82007-05-04 03:30:17 +0000475 }
Joe Abbeyacb61942013-02-06 22:14:06 +0000476
Chris Lattner48c85b82007-05-04 03:30:17 +0000477 // Read a record.
478 Record.clear();
Chris Lattner5a4251c2013-01-20 02:13:19 +0000479 switch (Stream.readRecord(Entry.ID, Record)) {
Chris Lattner48c85b82007-05-04 03:30:17 +0000480 default: // Default behavior: ignore.
481 break;
Bill Wendlingf9271ea2013-02-04 23:32:23 +0000482 case bitc::PARAMATTR_CODE_ENTRY_OLD: { // ENTRY: [paramidx0, attr0, ...]
483 // FIXME: Remove in 4.0.
Chris Lattner48c85b82007-05-04 03:30:17 +0000484 if (Record.size() & 1)
485 return Error("Invalid ENTRY record");
486
Chris Lattner48c85b82007-05-04 03:30:17 +0000487 for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
Bill Wendling8232ece2013-01-29 01:43:29 +0000488 AttrBuilder B;
Bill Wendlingf9271ea2013-02-04 23:32:23 +0000489 decodeLLVMAttributesForBitcode(B, Record[i+1]);
Bill Wendling8232ece2013-01-29 01:43:29 +0000490 Attrs.push_back(AttributeSet::get(Context, Record[i], B));
Devang Patel19c87462008-09-26 22:53:05 +0000491 }
Devang Patel19c87462008-09-26 22:53:05 +0000492
Bill Wendling99faa3b2012-12-07 23:16:57 +0000493 MAttributes.push_back(AttributeSet::get(Context, Attrs));
Chris Lattner48c85b82007-05-04 03:30:17 +0000494 Attrs.clear();
495 break;
496 }
Duncan Sands5e41f652007-11-20 14:09:29 +0000497 }
Chris Lattner48c85b82007-05-04 03:30:17 +0000498 }
499}
500
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000501bool BitcodeReader::ParseAttributeGroupBlock() {
502 if (Stream.EnterSubBlock(bitc::PARAMATTR_GROUP_BLOCK_ID))
503 return Error("Malformed block record");
504
505 if (!MAttributeGroups.empty())
506 return Error("Multiple PARAMATTR_GROUP blocks found!");
507
508 SmallVector<uint64_t, 64> Record;
509
510 // Read all the records.
511 while (1) {
512 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
513
514 switch (Entry.Kind) {
515 case BitstreamEntry::SubBlock: // Handled for us already.
516 case BitstreamEntry::Error:
517 return Error("Error at end of PARAMATTR_GROUP block");
518 case BitstreamEntry::EndBlock:
519 return false;
520 case BitstreamEntry::Record:
521 // The interesting case.
522 break;
523 }
524
525 // Read a record.
526 Record.clear();
527 switch (Stream.readRecord(Entry.ID, Record)) {
528 default: // Default behavior: ignore.
529 break;
530 case bitc::PARAMATTR_GRP_CODE_ENTRY: { // ENTRY: [grpid, idx, a0, a1, ...]
531 if (Record.size() < 3)
532 return Error("Invalid ENTRY record");
533
Bill Wendling04ef4be2013-02-11 22:32:29 +0000534 uint64_t GrpID = Record[0];
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000535 uint64_t Idx = Record[1]; // Index of the object this attribute refers to.
536
537 AttrBuilder B;
538 for (unsigned i = 2, e = Record.size(); i != e; ++i) {
539 if (Record[i] == 0) { // Enum attribute
540 B.addAttribute(Attribute::AttrKind(Record[++i]));
541 } else if (Record[i] == 1) { // Align attribute
542 if (Attribute::AttrKind(Record[++i]) == Attribute::Alignment)
543 B.addAlignmentAttr(Record[++i]);
544 else
545 B.addStackAlignmentAttr(Record[++i]);
546 } else { // String attribute
Bill Wendling04ef4be2013-02-11 22:32:29 +0000547 assert((Record[i] == 3 || Record[i] == 4) &&
548 "Invalid attribute group entry");
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000549 bool HasValue = (Record[i++] == 4);
550 SmallString<64> KindStr;
551 SmallString<64> ValStr;
552
553 while (Record[i] != 0 && i != e)
554 KindStr += Record[i++];
Bill Wendling04ef4be2013-02-11 22:32:29 +0000555 assert(Record[i] == 0 && "Kind string not null terminated");
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000556
557 if (HasValue) {
558 // Has a value associated with it.
Bill Wendling04ef4be2013-02-11 22:32:29 +0000559 ++i; // Skip the '0' that terminates the "kind" string.
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000560 while (Record[i] != 0 && i != e)
561 ValStr += Record[i++];
Bill Wendling04ef4be2013-02-11 22:32:29 +0000562 assert(Record[i] == 0 && "Value string not null terminated");
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000563 }
564
565 B.addAttribute(KindStr.str(), ValStr.str());
566 }
567 }
568
Bill Wendling04ef4be2013-02-11 22:32:29 +0000569 MAttributeGroups[GrpID] = AttributeSet::get(Context, Idx, B);
Bill Wendlingc3ba0a82013-02-10 23:24:25 +0000570 break;
571 }
572 }
573 }
574}
575
Chris Lattner86697142007-05-01 05:01:34 +0000576bool BitcodeReader::ParseTypeTable() {
Chris Lattner1afcace2011-07-09 17:41:24 +0000577 if (Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_NEW))
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000578 return Error("Malformed block record");
Derek Schufffccf0622012-02-06 19:03:04 +0000579
Chris Lattner1afcace2011-07-09 17:41:24 +0000580 return ParseTypeTableBody();
581}
Daniel Dunbara279bc32009-09-20 02:20:51 +0000582
Chris Lattner1afcace2011-07-09 17:41:24 +0000583bool BitcodeReader::ParseTypeTableBody() {
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000584 if (!TypeList.empty())
585 return Error("Multiple TYPE_BLOCKs found!");
586
587 SmallVector<uint64_t, 64> Record;
588 unsigned NumRecords = 0;
589
Chris Lattner1afcace2011-07-09 17:41:24 +0000590 SmallString<64> TypeName;
Derek Schufffccf0622012-02-06 19:03:04 +0000591
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000592 // Read all the records for this type table.
593 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +0000594 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +0000595
Chris Lattner5a4251c2013-01-20 02:13:19 +0000596 switch (Entry.Kind) {
597 case BitstreamEntry::SubBlock: // Handled for us already.
598 case BitstreamEntry::Error:
599 Error("Error in the type table block");
600 return true;
601 case BitstreamEntry::EndBlock:
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000602 if (NumRecords != TypeList.size())
603 return Error("Invalid type forward reference in TYPE_BLOCK");
Chris Lattnerf66d20d2007-04-24 18:15:21 +0000604 return false;
Chris Lattner5a4251c2013-01-20 02:13:19 +0000605 case BitstreamEntry::Record:
606 // The interesting case.
607 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000608 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000609
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000610 // Read a record.
611 Record.clear();
Chris Lattner1afcace2011-07-09 17:41:24 +0000612 Type *ResultTy = 0;
Chris Lattner5a4251c2013-01-20 02:13:19 +0000613 switch (Stream.readRecord(Entry.ID, Record)) {
Chris Lattner1afcace2011-07-09 17:41:24 +0000614 default: return Error("unknown type in type table");
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000615 case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries]
616 // TYPE_CODE_NUMENTRY contains a count of the number of types in the
617 // type list. This allows us to reserve space.
618 if (Record.size() < 1)
619 return Error("Invalid TYPE_CODE_NUMENTRY record");
Chris Lattner1afcace2011-07-09 17:41:24 +0000620 TypeList.resize(Record[0]);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000621 continue;
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000622 case bitc::TYPE_CODE_VOID: // VOID
Owen Anderson1d0be152009-08-13 21:58:54 +0000623 ResultTy = Type::getVoidTy(Context);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000624 break;
Dan Gohmance163392011-12-17 00:04:22 +0000625 case bitc::TYPE_CODE_HALF: // HALF
626 ResultTy = Type::getHalfTy(Context);
627 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000628 case bitc::TYPE_CODE_FLOAT: // FLOAT
Owen Anderson1d0be152009-08-13 21:58:54 +0000629 ResultTy = Type::getFloatTy(Context);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000630 break;
631 case bitc::TYPE_CODE_DOUBLE: // DOUBLE
Owen Anderson1d0be152009-08-13 21:58:54 +0000632 ResultTy = Type::getDoubleTy(Context);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000633 break;
Dale Johannesen320fc8a2007-08-03 01:03:46 +0000634 case bitc::TYPE_CODE_X86_FP80: // X86_FP80
Owen Anderson1d0be152009-08-13 21:58:54 +0000635 ResultTy = Type::getX86_FP80Ty(Context);
Dale Johannesen320fc8a2007-08-03 01:03:46 +0000636 break;
637 case bitc::TYPE_CODE_FP128: // FP128
Owen Anderson1d0be152009-08-13 21:58:54 +0000638 ResultTy = Type::getFP128Ty(Context);
Dale Johannesen320fc8a2007-08-03 01:03:46 +0000639 break;
640 case bitc::TYPE_CODE_PPC_FP128: // PPC_FP128
Owen Anderson1d0be152009-08-13 21:58:54 +0000641 ResultTy = Type::getPPC_FP128Ty(Context);
Dale Johannesen320fc8a2007-08-03 01:03:46 +0000642 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000643 case bitc::TYPE_CODE_LABEL: // LABEL
Owen Anderson1d0be152009-08-13 21:58:54 +0000644 ResultTy = Type::getLabelTy(Context);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000645 break;
Nick Lewycky7a0370f2009-05-30 05:06:04 +0000646 case bitc::TYPE_CODE_METADATA: // METADATA
Owen Anderson1d0be152009-08-13 21:58:54 +0000647 ResultTy = Type::getMetadataTy(Context);
Nick Lewycky7a0370f2009-05-30 05:06:04 +0000648 break;
Dale Johannesenbb811a22010-09-10 20:55:01 +0000649 case bitc::TYPE_CODE_X86_MMX: // X86_MMX
650 ResultTy = Type::getX86_MMXTy(Context);
651 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000652 case bitc::TYPE_CODE_INTEGER: // INTEGER: [width]
653 if (Record.size() < 1)
654 return Error("Invalid Integer type record");
Daniel Dunbara279bc32009-09-20 02:20:51 +0000655
Owen Anderson1d0be152009-08-13 21:58:54 +0000656 ResultTy = IntegerType::get(Context, Record[0]);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000657 break;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000658 case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or
Christopher Lambfe63fb92007-12-11 08:59:05 +0000659 // [pointee type, address space]
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000660 if (Record.size() < 1)
661 return Error("Invalid POINTER type record");
Christopher Lambfe63fb92007-12-11 08:59:05 +0000662 unsigned AddressSpace = 0;
663 if (Record.size() == 2)
664 AddressSpace = Record[1];
Chris Lattner1afcace2011-07-09 17:41:24 +0000665 ResultTy = getTypeByID(Record[0]);
666 if (ResultTy == 0) return Error("invalid element type in pointer type");
667 ResultTy = PointerType::get(ResultTy, AddressSpace);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000668 break;
Christopher Lambfe63fb92007-12-11 08:59:05 +0000669 }
Nuno Lopesee8100d2012-05-23 15:19:39 +0000670 case bitc::TYPE_CODE_FUNCTION_OLD: {
671 // FIXME: attrid is dead, remove it in LLVM 4.0
672 // FUNCTION: [vararg, attrid, retty, paramty x N]
673 if (Record.size() < 3)
674 return Error("Invalid FUNCTION type record");
675 SmallVector<Type*, 8> ArgTys;
676 for (unsigned i = 3, e = Record.size(); i != e; ++i) {
677 if (Type *T = getTypeByID(Record[i]))
678 ArgTys.push_back(T);
679 else
680 break;
681 }
Michael Ilseman407a6162012-11-15 22:34:00 +0000682
Nuno Lopesee8100d2012-05-23 15:19:39 +0000683 ResultTy = getTypeByID(Record[2]);
684 if (ResultTy == 0 || ArgTys.size() < Record.size()-3)
685 return Error("invalid type in function type");
686
687 ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]);
688 break;
689 }
Chad Rosiercde54642011-11-03 00:14:01 +0000690 case bitc::TYPE_CODE_FUNCTION: {
691 // FUNCTION: [vararg, retty, paramty x N]
692 if (Record.size() < 2)
693 return Error("Invalid FUNCTION type record");
Chris Lattnerd629efa2012-01-27 03:15:49 +0000694 SmallVector<Type*, 8> ArgTys;
Chad Rosiercde54642011-11-03 00:14:01 +0000695 for (unsigned i = 2, e = Record.size(); i != e; ++i) {
696 if (Type *T = getTypeByID(Record[i]))
697 ArgTys.push_back(T);
698 else
699 break;
700 }
Michael Ilseman407a6162012-11-15 22:34:00 +0000701
Chad Rosiercde54642011-11-03 00:14:01 +0000702 ResultTy = getTypeByID(Record[1]);
703 if (ResultTy == 0 || ArgTys.size() < Record.size()-2)
704 return Error("invalid type in function type");
705
706 ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]);
707 break;
708 }
Chris Lattner1afcace2011-07-09 17:41:24 +0000709 case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N]
Chris Lattner7108dce2007-05-06 08:21:50 +0000710 if (Record.size() < 1)
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000711 return Error("Invalid STRUCT type record");
Chris Lattnerd629efa2012-01-27 03:15:49 +0000712 SmallVector<Type*, 8> EltTys;
Chris Lattner1afcace2011-07-09 17:41:24 +0000713 for (unsigned i = 1, e = Record.size(); i != e; ++i) {
714 if (Type *T = getTypeByID(Record[i]))
715 EltTys.push_back(T);
716 else
717 break;
718 }
719 if (EltTys.size() != Record.size()-1)
720 return Error("invalid type in struct type");
Owen Andersond7f2a6c2009-08-05 23:16:16 +0000721 ResultTy = StructType::get(Context, EltTys, Record[0]);
Chris Lattnercaee0dc2007-04-22 06:23:29 +0000722 break;
723 }
Chris Lattner1afcace2011-07-09 17:41:24 +0000724 case bitc::TYPE_CODE_STRUCT_NAME: // STRUCT_NAME: [strchr x N]
725 if (ConvertToString(Record, 0, TypeName))
726 return Error("Invalid STRUCT_NAME record");
727 continue;
728
729 case bitc::TYPE_CODE_STRUCT_NAMED: { // STRUCT: [ispacked, eltty x N]
730 if (Record.size() < 1)
731 return Error("Invalid STRUCT type record");
Michael Ilseman407a6162012-11-15 22:34:00 +0000732
Chris Lattner1afcace2011-07-09 17:41:24 +0000733 if (NumRecords >= TypeList.size())
734 return Error("invalid TYPE table");
Michael Ilseman407a6162012-11-15 22:34:00 +0000735
Chris Lattner1afcace2011-07-09 17:41:24 +0000736 // Check to see if this was forward referenced, if so fill in the temp.
737 StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]);
738 if (Res) {
739 Res->setName(TypeName);
740 TypeList[NumRecords] = 0;
741 } else // Otherwise, create a new struct.
Chris Lattner3ebb6492011-08-12 18:06:37 +0000742 Res = StructType::create(Context, TypeName);
Chris Lattner1afcace2011-07-09 17:41:24 +0000743 TypeName.clear();
Michael Ilseman407a6162012-11-15 22:34:00 +0000744
Chris Lattner1afcace2011-07-09 17:41:24 +0000745 SmallVector<Type*, 8> EltTys;
746 for (unsigned i = 1, e = Record.size(); i != e; ++i) {
747 if (Type *T = getTypeByID(Record[i]))
748 EltTys.push_back(T);
749 else
750 break;
751 }
752 if (EltTys.size() != Record.size()-1)
753 return Error("invalid STRUCT type record");
754 Res->setBody(EltTys, Record[0]);
755 ResultTy = Res;
756 break;
757 }
758 case bitc::TYPE_CODE_OPAQUE: { // OPAQUE: []
759 if (Record.size() != 1)
760 return Error("Invalid OPAQUE type record");
761
762 if (NumRecords >= TypeList.size())
763 return Error("invalid TYPE table");
Michael Ilseman407a6162012-11-15 22:34:00 +0000764
Chris Lattner1afcace2011-07-09 17:41:24 +0000765 // Check to see if this was forward referenced, if so fill in the temp.
766 StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]);
767 if (Res) {
768 Res->setName(TypeName);
769 TypeList[NumRecords] = 0;
770 } else // Otherwise, create a new struct with no body.
Chris Lattner3ebb6492011-08-12 18:06:37 +0000771 Res = StructType::create(Context, TypeName);
Chris Lattner1afcace2011-07-09 17:41:24 +0000772 TypeName.clear();
773 ResultTy = Res;
774 break;
Michael Ilseman407a6162012-11-15 22:34:00 +0000775 }
Chris Lattner1afcace2011-07-09 17:41:24 +0000776 case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty]
777 if (Record.size() < 2)
778 return Error("Invalid ARRAY type record");
779 if ((ResultTy = getTypeByID(Record[1])))
780 ResultTy = ArrayType::get(ResultTy, Record[0]);
781 else
782 return Error("Invalid ARRAY type element");
783 break;
784 case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty]
785 if (Record.size() < 2)
786 return Error("Invalid VECTOR type record");
787 if ((ResultTy = getTypeByID(Record[1])))
788 ResultTy = VectorType::get(ResultTy, Record[0]);
789 else
790 return Error("Invalid ARRAY type element");
791 break;
792 }
793
794 if (NumRecords >= TypeList.size())
795 return Error("invalid TYPE table");
796 assert(ResultTy && "Didn't read a type?");
797 assert(TypeList[NumRecords] == 0 && "Already read type?");
798 TypeList[NumRecords++] = ResultTy;
799 }
800}
801
Chris Lattner86697142007-05-01 05:01:34 +0000802bool BitcodeReader::ParseValueSymbolTable() {
Chris Lattnere17b6582007-05-05 00:17:00 +0000803 if (Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID))
Chris Lattner0b2482a2007-04-23 21:26:05 +0000804 return Error("Malformed block record");
805
806 SmallVector<uint64_t, 64> Record;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000807
Chris Lattner0b2482a2007-04-23 21:26:05 +0000808 // Read all the records for this value table.
809 SmallString<128> ValueName;
810 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +0000811 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +0000812
Chris Lattner5a4251c2013-01-20 02:13:19 +0000813 switch (Entry.Kind) {
814 case BitstreamEntry::SubBlock: // Handled for us already.
815 case BitstreamEntry::Error:
816 return Error("malformed value symbol table block");
817 case BitstreamEntry::EndBlock:
Chris Lattnerf66d20d2007-04-24 18:15:21 +0000818 return false;
Chris Lattner5a4251c2013-01-20 02:13:19 +0000819 case BitstreamEntry::Record:
820 // The interesting case.
821 break;
Chris Lattner0b2482a2007-04-23 21:26:05 +0000822 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000823
Chris Lattner0b2482a2007-04-23 21:26:05 +0000824 // Read a record.
825 Record.clear();
Chris Lattner5a4251c2013-01-20 02:13:19 +0000826 switch (Stream.readRecord(Entry.ID, Record)) {
Chris Lattner0b2482a2007-04-23 21:26:05 +0000827 default: // Default behavior: unknown type.
828 break;
Chris Lattner15e6d172007-05-04 19:11:41 +0000829 case bitc::VST_CODE_ENTRY: { // VST_ENTRY: [valueid, namechar x N]
Chris Lattner0b2482a2007-04-23 21:26:05 +0000830 if (ConvertToString(Record, 1, ValueName))
Nick Lewycky88b72932009-05-31 06:07:28 +0000831 return Error("Invalid VST_ENTRY record");
Chris Lattner0b2482a2007-04-23 21:26:05 +0000832 unsigned ValueID = Record[0];
833 if (ValueID >= ValueList.size())
834 return Error("Invalid Value ID in VST_ENTRY record");
835 Value *V = ValueList[ValueID];
Daniel Dunbara279bc32009-09-20 02:20:51 +0000836
Daniel Dunbar3f53fa92009-07-26 00:34:27 +0000837 V->setName(StringRef(ValueName.data(), ValueName.size()));
Chris Lattner0b2482a2007-04-23 21:26:05 +0000838 ValueName.clear();
839 break;
Reid Spencerc8f8a242007-05-04 01:43:33 +0000840 }
Bill Wendling5d7a5a42011-04-10 23:18:04 +0000841 case bitc::VST_CODE_BBENTRY: {
Chris Lattnere825ed52007-05-03 22:18:21 +0000842 if (ConvertToString(Record, 1, ValueName))
843 return Error("Invalid VST_BBENTRY record");
844 BasicBlock *BB = getBasicBlock(Record[0]);
845 if (BB == 0)
846 return Error("Invalid BB ID in VST_BBENTRY record");
Daniel Dunbara279bc32009-09-20 02:20:51 +0000847
Daniel Dunbar3f53fa92009-07-26 00:34:27 +0000848 BB->setName(StringRef(ValueName.data(), ValueName.size()));
Chris Lattnere825ed52007-05-03 22:18:21 +0000849 ValueName.clear();
850 break;
Chris Lattner0b2482a2007-04-23 21:26:05 +0000851 }
Reid Spencerc8f8a242007-05-04 01:43:33 +0000852 }
Chris Lattner0b2482a2007-04-23 21:26:05 +0000853 }
854}
855
Devang Patele54abc92009-07-22 17:43:22 +0000856bool BitcodeReader::ParseMetadata() {
Devang Patel23598502010-01-11 18:52:33 +0000857 unsigned NextMDValueNo = MDValueList.size();
Devang Patele54abc92009-07-22 17:43:22 +0000858
859 if (Stream.EnterSubBlock(bitc::METADATA_BLOCK_ID))
860 return Error("Malformed block record");
Daniel Dunbara279bc32009-09-20 02:20:51 +0000861
Devang Patele54abc92009-07-22 17:43:22 +0000862 SmallVector<uint64_t, 64> Record;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000863
Devang Patele54abc92009-07-22 17:43:22 +0000864 // Read all the records.
865 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +0000866 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +0000867
Chris Lattner5a4251c2013-01-20 02:13:19 +0000868 switch (Entry.Kind) {
869 case BitstreamEntry::SubBlock: // Handled for us already.
870 case BitstreamEntry::Error:
871 Error("malformed metadata block");
872 return true;
873 case BitstreamEntry::EndBlock:
Devang Patele54abc92009-07-22 17:43:22 +0000874 return false;
Chris Lattner5a4251c2013-01-20 02:13:19 +0000875 case BitstreamEntry::Record:
876 // The interesting case.
877 break;
Devang Patele54abc92009-07-22 17:43:22 +0000878 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000879
Victor Hernandez24e64df2010-01-10 07:14:18 +0000880 bool IsFunctionLocal = false;
Devang Patele54abc92009-07-22 17:43:22 +0000881 // Read a record.
882 Record.clear();
Chris Lattner5a4251c2013-01-20 02:13:19 +0000883 unsigned Code = Stream.readRecord(Entry.ID, Record);
Dan Gohman9b10dfb2010-09-13 18:00:48 +0000884 switch (Code) {
Devang Patele54abc92009-07-22 17:43:22 +0000885 default: // Default behavior: ignore.
886 break;
Devang Patelaa993142009-07-29 22:34:41 +0000887 case bitc::METADATA_NAME: {
Chris Lattner1ca114a2013-01-20 02:54:05 +0000888 // Read name of the named metadata.
Benjamin Kramerf52aea82012-05-28 14:10:31 +0000889 SmallString<8> Name(Record.begin(), Record.end());
Devang Patelaa993142009-07-29 22:34:41 +0000890 Record.clear();
891 Code = Stream.ReadCode();
892
Chris Lattner9d61dd92011-06-17 17:50:30 +0000893 // METADATA_NAME is always followed by METADATA_NAMED_NODE.
Chris Lattner5a4251c2013-01-20 02:13:19 +0000894 unsigned NextBitCode = Stream.readRecord(Code, Record);
Chris Lattner9d61dd92011-06-17 17:50:30 +0000895 assert(NextBitCode == bitc::METADATA_NAMED_NODE); (void)NextBitCode;
Devang Patelaa993142009-07-29 22:34:41 +0000896
897 // Read named metadata elements.
898 unsigned Size = Record.size();
Dan Gohman17aa92c2010-07-21 23:38:33 +0000899 NamedMDNode *NMD = TheModule->getOrInsertNamedMetadata(Name);
Devang Patelaa993142009-07-29 22:34:41 +0000900 for (unsigned i = 0; i != Size; ++i) {
Chris Lattner70644e92010-01-09 02:02:37 +0000901 MDNode *MD = dyn_cast<MDNode>(MDValueList.getValueFwdRef(Record[i]));
902 if (MD == 0)
903 return Error("Malformed metadata record");
Dan Gohman17aa92c2010-07-21 23:38:33 +0000904 NMD->addOperand(MD);
Devang Patelaa993142009-07-29 22:34:41 +0000905 }
Devang Patelaa993142009-07-29 22:34:41 +0000906 break;
907 }
Chris Lattner9d61dd92011-06-17 17:50:30 +0000908 case bitc::METADATA_FN_NODE:
Victor Hernandez24e64df2010-01-10 07:14:18 +0000909 IsFunctionLocal = true;
910 // fall-through
Chris Lattner9d61dd92011-06-17 17:50:30 +0000911 case bitc::METADATA_NODE: {
Dan Gohmanac809752010-07-13 19:33:27 +0000912 if (Record.size() % 2 == 1)
Chris Lattner9d61dd92011-06-17 17:50:30 +0000913 return Error("Invalid METADATA_NODE record");
Daniel Dunbara279bc32009-09-20 02:20:51 +0000914
Devang Patel104cf9e2009-07-23 01:07:34 +0000915 unsigned Size = Record.size();
916 SmallVector<Value*, 8> Elts;
917 for (unsigned i = 0; i != Size; i += 2) {
Chris Lattnerdb125cf2011-07-18 04:54:35 +0000918 Type *Ty = getTypeByID(Record[i]);
Chris Lattner9d61dd92011-06-17 17:50:30 +0000919 if (!Ty) return Error("Invalid METADATA_NODE record");
Chris Lattnercf0fe8d2009-10-05 05:54:46 +0000920 if (Ty->isMetadataTy())
Devang Pateld5ac4042009-08-04 06:00:18 +0000921 Elts.push_back(MDValueList.getValueFwdRef(Record[i+1]));
Benjamin Kramerf0127052010-01-05 13:12:22 +0000922 else if (!Ty->isVoidTy())
Devang Patel104cf9e2009-07-23 01:07:34 +0000923 Elts.push_back(ValueList.getValueFwdRef(Record[i+1], Ty));
924 else
925 Elts.push_back(NULL);
926 }
Jay Foadec9186b2011-04-21 19:59:31 +0000927 Value *V = MDNode::getWhenValsUnresolved(Context, Elts, IsFunctionLocal);
Victor Hernandez24e64df2010-01-10 07:14:18 +0000928 IsFunctionLocal = false;
Devang Patel23598502010-01-11 18:52:33 +0000929 MDValueList.AssignValue(V, NextMDValueNo++);
Devang Patel104cf9e2009-07-23 01:07:34 +0000930 break;
931 }
Devang Patele54abc92009-07-22 17:43:22 +0000932 case bitc::METADATA_STRING: {
Benjamin Kramerf52aea82012-05-28 14:10:31 +0000933 SmallString<8> String(Record.begin(), Record.end());
934 Value *V = MDString::get(Context, String);
Devang Patel23598502010-01-11 18:52:33 +0000935 MDValueList.AssignValue(V, NextMDValueNo++);
Devang Patele54abc92009-07-22 17:43:22 +0000936 break;
937 }
Devang Patele8e02132009-09-18 19:26:43 +0000938 case bitc::METADATA_KIND: {
Benjamin Kramerf52aea82012-05-28 14:10:31 +0000939 if (Record.size() < 2)
Daniel Dunbara279bc32009-09-20 02:20:51 +0000940 return Error("Invalid METADATA_KIND record");
Benjamin Kramerf52aea82012-05-28 14:10:31 +0000941
Devang Patela2148402009-09-28 21:14:55 +0000942 unsigned Kind = Record[0];
Benjamin Kramerf52aea82012-05-28 14:10:31 +0000943 SmallString<8> Name(Record.begin()+1, Record.end());
944
Chris Lattner08113472009-12-29 09:01:33 +0000945 unsigned NewKind = TheModule->getMDKindID(Name.str());
Dan Gohman19538d12010-07-20 21:42:28 +0000946 if (!MDKindMap.insert(std::make_pair(Kind, NewKind)).second)
947 return Error("Conflicting METADATA_KIND records");
Devang Patele8e02132009-09-18 19:26:43 +0000948 break;
949 }
Devang Patele54abc92009-07-22 17:43:22 +0000950 }
951 }
952}
953
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +0000954/// decodeSignRotatedValue - Decode a signed value stored with the sign bit in
Chris Lattner0eef0802007-04-24 04:04:35 +0000955/// the LSB for dense VBR encoding.
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +0000956uint64_t BitcodeReader::decodeSignRotatedValue(uint64_t V) {
Chris Lattner0eef0802007-04-24 04:04:35 +0000957 if ((V & 1) == 0)
958 return V >> 1;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000959 if (V != 1)
Chris Lattner0eef0802007-04-24 04:04:35 +0000960 return -(V >> 1);
961 // There is no such thing as -0 with integers. "-0" really means MININT.
962 return 1ULL << 63;
963}
964
Chris Lattner07d98b42007-04-26 02:46:40 +0000965/// ResolveGlobalAndAliasInits - Resolve all of the initializers for global
966/// values and aliases that we can.
967bool BitcodeReader::ResolveGlobalAndAliasInits() {
968 std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInitWorklist;
969 std::vector<std::pair<GlobalAlias*, unsigned> > AliasInitWorklist;
Daniel Dunbara279bc32009-09-20 02:20:51 +0000970
Chris Lattner07d98b42007-04-26 02:46:40 +0000971 GlobalInitWorklist.swap(GlobalInits);
972 AliasInitWorklist.swap(AliasInits);
973
974 while (!GlobalInitWorklist.empty()) {
Chris Lattner198f34a2007-04-26 03:27:58 +0000975 unsigned ValID = GlobalInitWorklist.back().second;
Chris Lattner07d98b42007-04-26 02:46:40 +0000976 if (ValID >= ValueList.size()) {
977 // Not ready to resolve this yet, it requires something later in the file.
Chris Lattner198f34a2007-04-26 03:27:58 +0000978 GlobalInits.push_back(GlobalInitWorklist.back());
Chris Lattner07d98b42007-04-26 02:46:40 +0000979 } else {
980 if (Constant *C = dyn_cast<Constant>(ValueList[ValID]))
981 GlobalInitWorklist.back().first->setInitializer(C);
982 else
983 return Error("Global variable initializer is not a constant!");
984 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000985 GlobalInitWorklist.pop_back();
Chris Lattner07d98b42007-04-26 02:46:40 +0000986 }
987
988 while (!AliasInitWorklist.empty()) {
989 unsigned ValID = AliasInitWorklist.back().second;
990 if (ValID >= ValueList.size()) {
991 AliasInits.push_back(AliasInitWorklist.back());
992 } else {
993 if (Constant *C = dyn_cast<Constant>(ValueList[ValID]))
Anton Korobeynikov7dde0ff2007-04-28 14:57:59 +0000994 AliasInitWorklist.back().first->setAliasee(C);
Chris Lattner07d98b42007-04-26 02:46:40 +0000995 else
996 return Error("Alias initializer is not a constant!");
997 }
Daniel Dunbara279bc32009-09-20 02:20:51 +0000998 AliasInitWorklist.pop_back();
Chris Lattner07d98b42007-04-26 02:46:40 +0000999 }
1000 return false;
1001}
1002
Benjamin Kramerf52aea82012-05-28 14:10:31 +00001003static APInt ReadWideAPInt(ArrayRef<uint64_t> Vals, unsigned TypeBits) {
1004 SmallVector<uint64_t, 8> Words(Vals.size());
1005 std::transform(Vals.begin(), Vals.end(), Words.begin(),
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00001006 BitcodeReader::decodeSignRotatedValue);
Benjamin Kramerf52aea82012-05-28 14:10:31 +00001007
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00001008 return APInt(TypeBits, Words);
1009}
1010
Chris Lattner86697142007-05-01 05:01:34 +00001011bool BitcodeReader::ParseConstants() {
Chris Lattnere17b6582007-05-05 00:17:00 +00001012 if (Stream.EnterSubBlock(bitc::CONSTANTS_BLOCK_ID))
Chris Lattnere16504e2007-04-24 03:30:34 +00001013 return Error("Malformed block record");
1014
1015 SmallVector<uint64_t, 64> Record;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001016
Chris Lattnere16504e2007-04-24 03:30:34 +00001017 // Read all the records for this value table.
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001018 Type *CurTy = Type::getInt32Ty(Context);
Chris Lattner522b7b12007-04-24 05:48:56 +00001019 unsigned NextCstNo = ValueList.size();
Chris Lattnere16504e2007-04-24 03:30:34 +00001020 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +00001021 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +00001022
Chris Lattner5a4251c2013-01-20 02:13:19 +00001023 switch (Entry.Kind) {
1024 case BitstreamEntry::SubBlock: // Handled for us already.
1025 case BitstreamEntry::Error:
1026 return Error("malformed block record in AST file");
1027 case BitstreamEntry::EndBlock:
1028 if (NextCstNo != ValueList.size())
1029 return Error("Invalid constant reference!");
Joe Abbeyacb61942013-02-06 22:14:06 +00001030
Chris Lattner5a4251c2013-01-20 02:13:19 +00001031 // Once all the constants have been read, go through and resolve forward
1032 // references.
1033 ValueList.ResolveConstantForwardRefs();
1034 return false;
1035 case BitstreamEntry::Record:
1036 // The interesting case.
Chris Lattnerea693df2008-08-21 02:34:16 +00001037 break;
Chris Lattnere16504e2007-04-24 03:30:34 +00001038 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00001039
Chris Lattnere16504e2007-04-24 03:30:34 +00001040 // Read a record.
1041 Record.clear();
1042 Value *V = 0;
Chris Lattner5a4251c2013-01-20 02:13:19 +00001043 unsigned BitCode = Stream.readRecord(Entry.ID, Record);
Dan Gohman1224c382009-07-20 21:19:07 +00001044 switch (BitCode) {
Chris Lattnere16504e2007-04-24 03:30:34 +00001045 default: // Default behavior: unknown constant
1046 case bitc::CST_CODE_UNDEF: // UNDEF
Owen Anderson9e9a0d52009-07-30 23:03:37 +00001047 V = UndefValue::get(CurTy);
Chris Lattnere16504e2007-04-24 03:30:34 +00001048 break;
1049 case bitc::CST_CODE_SETTYPE: // SETTYPE: [typeid]
1050 if (Record.empty())
1051 return Error("Malformed CST_SETTYPE record");
1052 if (Record[0] >= TypeList.size())
1053 return Error("Invalid Type ID in CST_SETTYPE record");
1054 CurTy = TypeList[Record[0]];
Chris Lattner0eef0802007-04-24 04:04:35 +00001055 continue; // Skip the ValueList manipulation.
Chris Lattnere16504e2007-04-24 03:30:34 +00001056 case bitc::CST_CODE_NULL: // NULL
Owen Andersona7235ea2009-07-31 20:28:14 +00001057 V = Constant::getNullValue(CurTy);
Chris Lattnere16504e2007-04-24 03:30:34 +00001058 break;
1059 case bitc::CST_CODE_INTEGER: // INTEGER: [intval]
Duncan Sands1df98592010-02-16 11:11:14 +00001060 if (!CurTy->isIntegerTy() || Record.empty())
Chris Lattner0eef0802007-04-24 04:04:35 +00001061 return Error("Invalid CST_INTEGER record");
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00001062 V = ConstantInt::get(CurTy, decodeSignRotatedValue(Record[0]));
Chris Lattner0eef0802007-04-24 04:04:35 +00001063 break;
Chris Lattner15e6d172007-05-04 19:11:41 +00001064 case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval]
Duncan Sands1df98592010-02-16 11:11:14 +00001065 if (!CurTy->isIntegerTy() || Record.empty())
Chris Lattner0eef0802007-04-24 04:04:35 +00001066 return Error("Invalid WIDE_INTEGER record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001067
Benjamin Kramerf52aea82012-05-28 14:10:31 +00001068 APInt VInt = ReadWideAPInt(Record,
1069 cast<IntegerType>(CurTy)->getBitWidth());
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00001070 V = ConstantInt::get(Context, VInt);
Michael Ilseman407a6162012-11-15 22:34:00 +00001071
Chris Lattner0eef0802007-04-24 04:04:35 +00001072 break;
1073 }
Dale Johannesen3f6eb742007-09-11 18:32:33 +00001074 case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval]
Chris Lattner0eef0802007-04-24 04:04:35 +00001075 if (Record.empty())
1076 return Error("Invalid FLOAT record");
Dan Gohmance163392011-12-17 00:04:22 +00001077 if (CurTy->isHalfTy())
Tim Northover0a29cb02013-01-22 09:46:31 +00001078 V = ConstantFP::get(Context, APFloat(APFloat::IEEEhalf,
1079 APInt(16, (uint16_t)Record[0])));
Dan Gohmance163392011-12-17 00:04:22 +00001080 else if (CurTy->isFloatTy())
Tim Northover0a29cb02013-01-22 09:46:31 +00001081 V = ConstantFP::get(Context, APFloat(APFloat::IEEEsingle,
1082 APInt(32, (uint32_t)Record[0])));
Chris Lattnercf0fe8d2009-10-05 05:54:46 +00001083 else if (CurTy->isDoubleTy())
Tim Northover0a29cb02013-01-22 09:46:31 +00001084 V = ConstantFP::get(Context, APFloat(APFloat::IEEEdouble,
1085 APInt(64, Record[0])));
Chris Lattnercf0fe8d2009-10-05 05:54:46 +00001086 else if (CurTy->isX86_FP80Ty()) {
Dale Johannesen1b25cb22009-03-23 21:16:53 +00001087 // Bits are not stored the same way as a normal i80 APInt, compensate.
1088 uint64_t Rearrange[2];
1089 Rearrange[0] = (Record[1] & 0xffffLL) | (Record[0] << 16);
1090 Rearrange[1] = Record[0] >> 48;
Tim Northover0a29cb02013-01-22 09:46:31 +00001091 V = ConstantFP::get(Context, APFloat(APFloat::x87DoubleExtended,
1092 APInt(80, Rearrange)));
Chris Lattnercf0fe8d2009-10-05 05:54:46 +00001093 } else if (CurTy->isFP128Ty())
Tim Northover0a29cb02013-01-22 09:46:31 +00001094 V = ConstantFP::get(Context, APFloat(APFloat::IEEEquad,
1095 APInt(128, Record)));
Chris Lattnercf0fe8d2009-10-05 05:54:46 +00001096 else if (CurTy->isPPC_FP128Ty())
Tim Northover0a29cb02013-01-22 09:46:31 +00001097 V = ConstantFP::get(Context, APFloat(APFloat::PPCDoubleDouble,
1098 APInt(128, Record)));
Chris Lattnere16504e2007-04-24 03:30:34 +00001099 else
Owen Anderson9e9a0d52009-07-30 23:03:37 +00001100 V = UndefValue::get(CurTy);
Chris Lattnere16504e2007-04-24 03:30:34 +00001101 break;
Dale Johannesen3f6eb742007-09-11 18:32:33 +00001102 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00001103
Chris Lattner15e6d172007-05-04 19:11:41 +00001104 case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number]
1105 if (Record.empty())
Chris Lattner522b7b12007-04-24 05:48:56 +00001106 return Error("Invalid CST_AGGREGATE record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001107
Chris Lattner15e6d172007-05-04 19:11:41 +00001108 unsigned Size = Record.size();
Chris Lattnerd629efa2012-01-27 03:15:49 +00001109 SmallVector<Constant*, 16> Elts;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001110
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001111 if (StructType *STy = dyn_cast<StructType>(CurTy)) {
Chris Lattner522b7b12007-04-24 05:48:56 +00001112 for (unsigned i = 0; i != Size; ++i)
Chris Lattner15e6d172007-05-04 19:11:41 +00001113 Elts.push_back(ValueList.getConstantFwdRef(Record[i],
Chris Lattner522b7b12007-04-24 05:48:56 +00001114 STy->getElementType(i)));
Owen Anderson8fa33382009-07-27 22:29:26 +00001115 V = ConstantStruct::get(STy, Elts);
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001116 } else if (ArrayType *ATy = dyn_cast<ArrayType>(CurTy)) {
1117 Type *EltTy = ATy->getElementType();
Chris Lattner522b7b12007-04-24 05:48:56 +00001118 for (unsigned i = 0; i != Size; ++i)
Chris Lattner15e6d172007-05-04 19:11:41 +00001119 Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy));
Owen Anderson1fd70962009-07-28 18:32:17 +00001120 V = ConstantArray::get(ATy, Elts);
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001121 } else if (VectorType *VTy = dyn_cast<VectorType>(CurTy)) {
1122 Type *EltTy = VTy->getElementType();
Chris Lattner522b7b12007-04-24 05:48:56 +00001123 for (unsigned i = 0; i != Size; ++i)
Chris Lattner15e6d172007-05-04 19:11:41 +00001124 Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy));
Owen Andersonaf7ec972009-07-28 21:19:26 +00001125 V = ConstantVector::get(Elts);
Chris Lattner522b7b12007-04-24 05:48:56 +00001126 } else {
Owen Anderson9e9a0d52009-07-30 23:03:37 +00001127 V = UndefValue::get(CurTy);
Chris Lattner522b7b12007-04-24 05:48:56 +00001128 }
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001129 break;
1130 }
Chris Lattner2237f842012-02-05 02:41:35 +00001131 case bitc::CST_CODE_STRING: // STRING: [values]
Chris Lattnercb3d91b2007-05-06 00:53:07 +00001132 case bitc::CST_CODE_CSTRING: { // CSTRING: [values]
1133 if (Record.empty())
Chris Lattner2237f842012-02-05 02:41:35 +00001134 return Error("Invalid CST_STRING record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001135
Benjamin Kramerf52aea82012-05-28 14:10:31 +00001136 SmallString<16> Elts(Record.begin(), Record.end());
Chris Lattner2237f842012-02-05 02:41:35 +00001137 V = ConstantDataArray::getString(Context, Elts,
1138 BitCode == bitc::CST_CODE_CSTRING);
Chris Lattnercb3d91b2007-05-06 00:53:07 +00001139 break;
1140 }
Chris Lattnerd408f062012-01-30 00:51:16 +00001141 case bitc::CST_CODE_DATA: {// DATA: [n x value]
1142 if (Record.empty())
1143 return Error("Invalid CST_DATA record");
Michael Ilseman407a6162012-11-15 22:34:00 +00001144
Chris Lattnerd408f062012-01-30 00:51:16 +00001145 Type *EltTy = cast<SequentialType>(CurTy)->getElementType();
1146 unsigned Size = Record.size();
Michael Ilseman407a6162012-11-15 22:34:00 +00001147
Chris Lattnerd408f062012-01-30 00:51:16 +00001148 if (EltTy->isIntegerTy(8)) {
1149 SmallVector<uint8_t, 16> Elts(Record.begin(), Record.end());
1150 if (isa<VectorType>(CurTy))
1151 V = ConstantDataVector::get(Context, Elts);
1152 else
1153 V = ConstantDataArray::get(Context, Elts);
1154 } else if (EltTy->isIntegerTy(16)) {
1155 SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end());
1156 if (isa<VectorType>(CurTy))
1157 V = ConstantDataVector::get(Context, Elts);
1158 else
1159 V = ConstantDataArray::get(Context, Elts);
1160 } else if (EltTy->isIntegerTy(32)) {
1161 SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end());
1162 if (isa<VectorType>(CurTy))
1163 V = ConstantDataVector::get(Context, Elts);
1164 else
1165 V = ConstantDataArray::get(Context, Elts);
1166 } else if (EltTy->isIntegerTy(64)) {
1167 SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end());
1168 if (isa<VectorType>(CurTy))
1169 V = ConstantDataVector::get(Context, Elts);
1170 else
1171 V = ConstantDataArray::get(Context, Elts);
1172 } else if (EltTy->isFloatTy()) {
Benjamin Kramerf52aea82012-05-28 14:10:31 +00001173 SmallVector<float, 16> Elts(Size);
1174 std::transform(Record.begin(), Record.end(), Elts.begin(), BitsToFloat);
Chris Lattnerd408f062012-01-30 00:51:16 +00001175 if (isa<VectorType>(CurTy))
1176 V = ConstantDataVector::get(Context, Elts);
1177 else
1178 V = ConstantDataArray::get(Context, Elts);
1179 } else if (EltTy->isDoubleTy()) {
Benjamin Kramerf52aea82012-05-28 14:10:31 +00001180 SmallVector<double, 16> Elts(Size);
1181 std::transform(Record.begin(), Record.end(), Elts.begin(),
1182 BitsToDouble);
Chris Lattnerd408f062012-01-30 00:51:16 +00001183 if (isa<VectorType>(CurTy))
1184 V = ConstantDataVector::get(Context, Elts);
1185 else
1186 V = ConstantDataArray::get(Context, Elts);
1187 } else {
1188 return Error("Unknown element type in CE_DATA");
1189 }
1190 break;
1191 }
1192
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001193 case bitc::CST_CODE_CE_BINOP: { // CE_BINOP: [opcode, opval, opval]
1194 if (Record.size() < 3) return Error("Invalid CE_BINOP record");
1195 int Opc = GetDecodedBinaryOpcode(Record[0], CurTy);
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001196 if (Opc < 0) {
Owen Anderson9e9a0d52009-07-30 23:03:37 +00001197 V = UndefValue::get(CurTy); // Unknown binop.
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001198 } else {
1199 Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy);
1200 Constant *RHS = ValueList.getConstantFwdRef(Record[2], CurTy);
Dan Gohmanf8dbee72009-09-07 23:54:19 +00001201 unsigned Flags = 0;
1202 if (Record.size() >= 4) {
1203 if (Opc == Instruction::Add ||
1204 Opc == Instruction::Sub ||
Chris Lattnerf067d582011-02-07 16:40:21 +00001205 Opc == Instruction::Mul ||
1206 Opc == Instruction::Shl) {
Dan Gohmanf8dbee72009-09-07 23:54:19 +00001207 if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP))
1208 Flags |= OverflowingBinaryOperator::NoSignedWrap;
1209 if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP))
1210 Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
Chris Lattner35bda892011-02-06 21:44:57 +00001211 } else if (Opc == Instruction::SDiv ||
Chris Lattnerf067d582011-02-07 16:40:21 +00001212 Opc == Instruction::UDiv ||
1213 Opc == Instruction::LShr ||
1214 Opc == Instruction::AShr) {
Chris Lattner35bda892011-02-06 21:44:57 +00001215 if (Record[3] & (1 << bitc::PEO_EXACT))
Dan Gohmanf8dbee72009-09-07 23:54:19 +00001216 Flags |= SDivOperator::IsExact;
1217 }
1218 }
1219 V = ConstantExpr::get(Opc, LHS, RHS, Flags);
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001220 }
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001221 break;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001222 }
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001223 case bitc::CST_CODE_CE_CAST: { // CE_CAST: [opcode, opty, opval]
1224 if (Record.size() < 3) return Error("Invalid CE_CAST record");
1225 int Opc = GetDecodedCastOpcode(Record[0]);
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001226 if (Opc < 0) {
Owen Anderson9e9a0d52009-07-30 23:03:37 +00001227 V = UndefValue::get(CurTy); // Unknown cast.
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001228 } else {
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001229 Type *OpTy = getTypeByID(Record[1]);
Chris Lattnerbfcc3802007-05-06 07:33:01 +00001230 if (!OpTy) return Error("Invalid CE_CAST record");
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001231 Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy);
Owen Andersonbaf3c402009-07-29 18:55:55 +00001232 V = ConstantExpr::getCast(Opc, Op, CurTy);
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001233 }
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001234 break;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001235 }
Dan Gohmandd8004d2009-07-27 21:53:46 +00001236 case bitc::CST_CODE_CE_INBOUNDS_GEP:
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001237 case bitc::CST_CODE_CE_GEP: { // CE_GEP: [n x operands]
Chris Lattner15e6d172007-05-04 19:11:41 +00001238 if (Record.size() & 1) return Error("Invalid CE_GEP record");
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001239 SmallVector<Constant*, 16> Elts;
Chris Lattner15e6d172007-05-04 19:11:41 +00001240 for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001241 Type *ElTy = getTypeByID(Record[i]);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001242 if (!ElTy) return Error("Invalid CE_GEP record");
1243 Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], ElTy));
1244 }
Jay Foaddab3d292011-07-21 14:31:17 +00001245 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
Jay Foad4b5e2072011-07-21 15:15:37 +00001246 V = ConstantExpr::getGetElementPtr(Elts[0], Indices,
1247 BitCode ==
1248 bitc::CST_CODE_CE_INBOUNDS_GEP);
Chris Lattnerf66d20d2007-04-24 18:15:21 +00001249 break;
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001250 }
1251 case bitc::CST_CODE_CE_SELECT: // CE_SELECT: [opval#, opval#, opval#]
1252 if (Record.size() < 3) return Error("Invalid CE_SELECT record");
Joe Abbeye46b14a2012-11-19 19:22:55 +00001253 V = ConstantExpr::getSelect(
1254 ValueList.getConstantFwdRef(Record[0],
1255 Type::getInt1Ty(Context)),
1256 ValueList.getConstantFwdRef(Record[1],CurTy),
1257 ValueList.getConstantFwdRef(Record[2],CurTy));
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001258 break;
1259 case bitc::CST_CODE_CE_EXTRACTELT: { // CE_EXTRACTELT: [opty, opval, opval]
1260 if (Record.size() < 3) return Error("Invalid CE_EXTRACTELT record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001261 VectorType *OpTy =
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001262 dyn_cast_or_null<VectorType>(getTypeByID(Record[0]));
1263 if (OpTy == 0) return Error("Invalid CE_EXTRACTELT record");
1264 Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
Joe Abbey170a15e2012-11-25 15:23:39 +00001265 Constant *Op1 = ValueList.getConstantFwdRef(Record[2],
Joe Abbeye46b14a2012-11-19 19:22:55 +00001266 Type::getInt32Ty(Context));
Owen Andersonbaf3c402009-07-29 18:55:55 +00001267 V = ConstantExpr::getExtractElement(Op0, Op1);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001268 break;
1269 }
1270 case bitc::CST_CODE_CE_INSERTELT: { // CE_INSERTELT: [opval, opval, opval]
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001271 VectorType *OpTy = dyn_cast<VectorType>(CurTy);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001272 if (Record.size() < 3 || OpTy == 0)
1273 return Error("Invalid CE_INSERTELT record");
1274 Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy);
1275 Constant *Op1 = ValueList.getConstantFwdRef(Record[1],
1276 OpTy->getElementType());
Joe Abbey170a15e2012-11-25 15:23:39 +00001277 Constant *Op2 = ValueList.getConstantFwdRef(Record[2],
Joe Abbeye46b14a2012-11-19 19:22:55 +00001278 Type::getInt32Ty(Context));
Owen Andersonbaf3c402009-07-29 18:55:55 +00001279 V = ConstantExpr::getInsertElement(Op0, Op1, Op2);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001280 break;
1281 }
1282 case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval]
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001283 VectorType *OpTy = dyn_cast<VectorType>(CurTy);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001284 if (Record.size() < 3 || OpTy == 0)
Nate Begeman0f123cf2009-02-12 21:28:33 +00001285 return Error("Invalid CE_SHUFFLEVEC record");
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001286 Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy);
1287 Constant *Op1 = ValueList.getConstantFwdRef(Record[1], OpTy);
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001288 Type *ShufTy = VectorType::get(Type::getInt32Ty(Context),
Owen Anderson74a77812009-07-07 20:18:58 +00001289 OpTy->getNumElements());
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001290 Constant *Op2 = ValueList.getConstantFwdRef(Record[2], ShufTy);
Owen Andersonbaf3c402009-07-29 18:55:55 +00001291 V = ConstantExpr::getShuffleVector(Op0, Op1, Op2);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001292 break;
1293 }
Nate Begeman0f123cf2009-02-12 21:28:33 +00001294 case bitc::CST_CODE_CE_SHUFVEC_EX: { // [opty, opval, opval, opval]
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001295 VectorType *RTy = dyn_cast<VectorType>(CurTy);
1296 VectorType *OpTy =
Duncan Sandsf22b7462010-10-28 15:47:26 +00001297 dyn_cast_or_null<VectorType>(getTypeByID(Record[0]));
Nate Begeman0f123cf2009-02-12 21:28:33 +00001298 if (Record.size() < 4 || RTy == 0 || OpTy == 0)
1299 return Error("Invalid CE_SHUFVEC_EX record");
1300 Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
1301 Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy);
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001302 Type *ShufTy = VectorType::get(Type::getInt32Ty(Context),
Owen Anderson74a77812009-07-07 20:18:58 +00001303 RTy->getNumElements());
Nate Begeman0f123cf2009-02-12 21:28:33 +00001304 Constant *Op2 = ValueList.getConstantFwdRef(Record[3], ShufTy);
Owen Andersonbaf3c402009-07-29 18:55:55 +00001305 V = ConstantExpr::getShuffleVector(Op0, Op1, Op2);
Nate Begeman0f123cf2009-02-12 21:28:33 +00001306 break;
1307 }
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001308 case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred]
1309 if (Record.size() < 4) return Error("Invalid CE_CMP record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001310 Type *OpTy = getTypeByID(Record[0]);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001311 if (OpTy == 0) return Error("Invalid CE_CMP record");
1312 Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
1313 Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy);
1314
Duncan Sandsb0bc6c32010-02-15 16:12:20 +00001315 if (OpTy->isFPOrFPVectorTy())
Owen Andersonbaf3c402009-07-29 18:55:55 +00001316 V = ConstantExpr::getFCmp(Record[3], Op0, Op1);
Nate Begemanac80ade2008-05-12 19:01:56 +00001317 else
Owen Andersonbaf3c402009-07-29 18:55:55 +00001318 V = ConstantExpr::getICmp(Record[3], Op0, Op1);
Chris Lattnerf581c3b2007-04-24 07:07:11 +00001319 break;
Chris Lattner522b7b12007-04-24 05:48:56 +00001320 }
Chad Rosier581600b2012-09-05 19:00:49 +00001321 // This maintains backward compatibility, pre-asm dialect keywords.
Chad Rosier27b25c22012-09-05 06:28:52 +00001322 // FIXME: Remove with the 4.0 release.
Chad Rosierf16ae582012-09-05 00:56:20 +00001323 case bitc::CST_CODE_INLINEASM_OLD: {
Chris Lattner2bce93a2007-05-06 01:58:20 +00001324 if (Record.size() < 2) return Error("Invalid INLINEASM record");
1325 std::string AsmStr, ConstrStr;
Dale Johannesen43602982009-10-13 20:46:56 +00001326 bool HasSideEffects = Record[0] & 1;
Dale Johannesen8ba2d5b2009-10-21 23:28:00 +00001327 bool IsAlignStack = Record[0] >> 1;
Chris Lattner2bce93a2007-05-06 01:58:20 +00001328 unsigned AsmStrSize = Record[1];
1329 if (2+AsmStrSize >= Record.size())
1330 return Error("Invalid INLINEASM record");
1331 unsigned ConstStrSize = Record[2+AsmStrSize];
1332 if (3+AsmStrSize+ConstStrSize > Record.size())
1333 return Error("Invalid INLINEASM record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001334
Chris Lattner2bce93a2007-05-06 01:58:20 +00001335 for (unsigned i = 0; i != AsmStrSize; ++i)
1336 AsmStr += (char)Record[2+i];
1337 for (unsigned i = 0; i != ConstStrSize; ++i)
1338 ConstrStr += (char)Record[3+AsmStrSize+i];
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001339 PointerType *PTy = cast<PointerType>(CurTy);
Chris Lattner2bce93a2007-05-06 01:58:20 +00001340 V = InlineAsm::get(cast<FunctionType>(PTy->getElementType()),
Dale Johannesen8ba2d5b2009-10-21 23:28:00 +00001341 AsmStr, ConstrStr, HasSideEffects, IsAlignStack);
Chris Lattner2bce93a2007-05-06 01:58:20 +00001342 break;
1343 }
Chad Rosier581600b2012-09-05 19:00:49 +00001344 // This version adds support for the asm dialect keywords (e.g.,
1345 // inteldialect).
Chad Rosierf16ae582012-09-05 00:56:20 +00001346 case bitc::CST_CODE_INLINEASM: {
1347 if (Record.size() < 2) return Error("Invalid INLINEASM record");
1348 std::string AsmStr, ConstrStr;
1349 bool HasSideEffects = Record[0] & 1;
1350 bool IsAlignStack = (Record[0] >> 1) & 1;
1351 unsigned AsmDialect = Record[0] >> 2;
1352 unsigned AsmStrSize = Record[1];
1353 if (2+AsmStrSize >= Record.size())
1354 return Error("Invalid INLINEASM record");
1355 unsigned ConstStrSize = Record[2+AsmStrSize];
1356 if (3+AsmStrSize+ConstStrSize > Record.size())
1357 return Error("Invalid INLINEASM record");
1358
1359 for (unsigned i = 0; i != AsmStrSize; ++i)
1360 AsmStr += (char)Record[2+i];
1361 for (unsigned i = 0; i != ConstStrSize; ++i)
1362 ConstrStr += (char)Record[3+AsmStrSize+i];
1363 PointerType *PTy = cast<PointerType>(CurTy);
1364 V = InlineAsm::get(cast<FunctionType>(PTy->getElementType()),
1365 AsmStr, ConstrStr, HasSideEffects, IsAlignStack,
Chad Rosier581600b2012-09-05 19:00:49 +00001366 InlineAsm::AsmDialect(AsmDialect));
Chad Rosierf16ae582012-09-05 00:56:20 +00001367 break;
1368 }
Chris Lattner50b136d2009-10-28 05:53:48 +00001369 case bitc::CST_CODE_BLOCKADDRESS:{
1370 if (Record.size() < 3) return Error("Invalid CE_BLOCKADDRESS record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001371 Type *FnTy = getTypeByID(Record[0]);
Chris Lattner50b136d2009-10-28 05:53:48 +00001372 if (FnTy == 0) return Error("Invalid CE_BLOCKADDRESS record");
1373 Function *Fn =
1374 dyn_cast_or_null<Function>(ValueList.getConstantFwdRef(Record[1],FnTy));
1375 if (Fn == 0) return Error("Invalid CE_BLOCKADDRESS record");
Benjamin Kramer122f5e52012-09-21 14:34:31 +00001376
1377 // If the function is already parsed we can insert the block address right
1378 // away.
1379 if (!Fn->empty()) {
1380 Function::iterator BBI = Fn->begin(), BBE = Fn->end();
1381 for (size_t I = 0, E = Record[2]; I != E; ++I) {
1382 if (BBI == BBE)
1383 return Error("Invalid blockaddress block #");
1384 ++BBI;
1385 }
1386 V = BlockAddress::get(Fn, BBI);
1387 } else {
1388 // Otherwise insert a placeholder and remember it so it can be inserted
1389 // when the function is parsed.
1390 GlobalVariable *FwdRef = new GlobalVariable(*Fn->getParent(),
1391 Type::getInt8Ty(Context),
Chris Lattner50b136d2009-10-28 05:53:48 +00001392 false, GlobalValue::InternalLinkage,
Benjamin Kramer122f5e52012-09-21 14:34:31 +00001393 0, "");
1394 BlockAddrFwdRefs[Fn].push_back(std::make_pair(Record[2], FwdRef));
1395 V = FwdRef;
1396 }
Chris Lattner50b136d2009-10-28 05:53:48 +00001397 break;
Michael Ilseman407a6162012-11-15 22:34:00 +00001398 }
Chris Lattnere16504e2007-04-24 03:30:34 +00001399 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00001400
Chris Lattnera7c49aa2007-05-01 07:01:57 +00001401 ValueList.AssignValue(V, NextCstNo);
Chris Lattner522b7b12007-04-24 05:48:56 +00001402 ++NextCstNo;
Chris Lattnere16504e2007-04-24 03:30:34 +00001403 }
1404}
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001405
Chad Rosiercbbb0962011-12-07 21:44:12 +00001406bool BitcodeReader::ParseUseLists() {
1407 if (Stream.EnterSubBlock(bitc::USELIST_BLOCK_ID))
1408 return Error("Malformed block record");
1409
1410 SmallVector<uint64_t, 64> Record;
Michael Ilseman407a6162012-11-15 22:34:00 +00001411
Chad Rosiercbbb0962011-12-07 21:44:12 +00001412 // Read all the records.
1413 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +00001414 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +00001415
Chris Lattner5a4251c2013-01-20 02:13:19 +00001416 switch (Entry.Kind) {
1417 case BitstreamEntry::SubBlock: // Handled for us already.
1418 case BitstreamEntry::Error:
1419 return Error("malformed use list block");
1420 case BitstreamEntry::EndBlock:
Chad Rosiercbbb0962011-12-07 21:44:12 +00001421 return false;
Chris Lattner5a4251c2013-01-20 02:13:19 +00001422 case BitstreamEntry::Record:
1423 // The interesting case.
1424 break;
Chad Rosiercbbb0962011-12-07 21:44:12 +00001425 }
Michael Ilseman407a6162012-11-15 22:34:00 +00001426
Chad Rosiercbbb0962011-12-07 21:44:12 +00001427 // Read a use list record.
1428 Record.clear();
Chris Lattner5a4251c2013-01-20 02:13:19 +00001429 switch (Stream.readRecord(Entry.ID, Record)) {
Chad Rosiercbbb0962011-12-07 21:44:12 +00001430 default: // Default behavior: unknown type.
1431 break;
1432 case bitc::USELIST_CODE_ENTRY: { // USELIST_CODE_ENTRY: TBD.
1433 unsigned RecordLength = Record.size();
1434 if (RecordLength < 1)
1435 return Error ("Invalid UseList reader!");
1436 UseListRecords.push_back(Record);
1437 break;
1438 }
1439 }
1440 }
1441}
1442
Chris Lattner980e5aa2007-05-01 05:52:21 +00001443/// RememberAndSkipFunctionBody - When we see the block for a function body,
1444/// remember where it is and then skip it. This lets us lazily deserialize the
1445/// functions.
1446bool BitcodeReader::RememberAndSkipFunctionBody() {
Chris Lattner48f84872007-05-01 04:59:48 +00001447 // Get the function we are talking about.
1448 if (FunctionsWithBodies.empty())
1449 return Error("Insufficient function protos");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001450
Chris Lattner48f84872007-05-01 04:59:48 +00001451 Function *Fn = FunctionsWithBodies.back();
1452 FunctionsWithBodies.pop_back();
Daniel Dunbara279bc32009-09-20 02:20:51 +00001453
Chris Lattner48f84872007-05-01 04:59:48 +00001454 // Save the current stream state.
1455 uint64_t CurBit = Stream.GetCurrentBitNo();
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00001456 DeferredFunctionInfo[Fn] = CurBit;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001457
Chris Lattner48f84872007-05-01 04:59:48 +00001458 // Skip over the function block for now.
1459 if (Stream.SkipBlock())
1460 return Error("Malformed block record");
1461 return false;
1462}
1463
Derek Schuff2ea93872012-02-06 22:30:29 +00001464bool BitcodeReader::GlobalCleanup() {
1465 // Patch the initializers for globals and aliases up.
1466 ResolveGlobalAndAliasInits();
1467 if (!GlobalInits.empty() || !AliasInits.empty())
1468 return Error("Malformed global initializer set");
1469
1470 // Look for intrinsic functions which need to be upgraded at some point
1471 for (Module::iterator FI = TheModule->begin(), FE = TheModule->end();
1472 FI != FE; ++FI) {
1473 Function *NewFn;
1474 if (UpgradeIntrinsicFunction(FI, NewFn))
1475 UpgradedIntrinsics.push_back(std::make_pair(FI, NewFn));
1476 }
1477
1478 // Look for global variables which need to be renamed.
1479 for (Module::global_iterator
1480 GI = TheModule->global_begin(), GE = TheModule->global_end();
1481 GI != GE; ++GI)
1482 UpgradeGlobalVariable(GI);
1483 // Force deallocation of memory for these vectors to favor the client that
1484 // want lazy deserialization.
1485 std::vector<std::pair<GlobalVariable*, unsigned> >().swap(GlobalInits);
1486 std::vector<std::pair<GlobalAlias*, unsigned> >().swap(AliasInits);
1487 return false;
1488}
1489
1490bool BitcodeReader::ParseModule(bool Resume) {
1491 if (Resume)
1492 Stream.JumpToBit(NextUnreadBit);
1493 else if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001494 return Error("Malformed block record");
1495
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001496 SmallVector<uint64_t, 64> Record;
1497 std::vector<std::string> SectionTable;
Gordon Henriksen5eca0752008-08-17 18:44:35 +00001498 std::vector<std::string> GCTable;
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001499
1500 // Read all the records for this module.
Chris Lattner5a4251c2013-01-20 02:13:19 +00001501 while (1) {
1502 BitstreamEntry Entry = Stream.advance();
Joe Abbeyacb61942013-02-06 22:14:06 +00001503
Chris Lattner5a4251c2013-01-20 02:13:19 +00001504 switch (Entry.Kind) {
1505 case BitstreamEntry::Error:
1506 Error("malformed module block");
1507 return true;
1508 case BitstreamEntry::EndBlock:
Derek Schuff2ea93872012-02-06 22:30:29 +00001509 return GlobalCleanup();
Joe Abbeyacb61942013-02-06 22:14:06 +00001510
Chris Lattner5a4251c2013-01-20 02:13:19 +00001511 case BitstreamEntry::SubBlock:
1512 switch (Entry.ID) {
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001513 default: // Skip unknown content.
1514 if (Stream.SkipBlock())
1515 return Error("Malformed block record");
1516 break;
Chris Lattner3f799802007-05-05 18:57:30 +00001517 case bitc::BLOCKINFO_BLOCK_ID:
1518 if (Stream.ReadBlockInfoBlock())
1519 return Error("Malformed BlockInfoBlock");
1520 break;
Chris Lattner48c85b82007-05-04 03:30:17 +00001521 case bitc::PARAMATTR_BLOCK_ID:
Devang Patel05988662008-09-25 21:00:45 +00001522 if (ParseAttributeBlock())
Chris Lattner48c85b82007-05-04 03:30:17 +00001523 return true;
1524 break;
Bill Wendlingc3ba0a82013-02-10 23:24:25 +00001525 case bitc::PARAMATTR_GROUP_BLOCK_ID:
1526 if (ParseAttributeGroupBlock())
1527 return true;
1528 break;
Chris Lattner1afcace2011-07-09 17:41:24 +00001529 case bitc::TYPE_BLOCK_ID_NEW:
Chris Lattner86697142007-05-01 05:01:34 +00001530 if (ParseTypeTable())
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001531 return true;
1532 break;
Chris Lattner0b2482a2007-04-23 21:26:05 +00001533 case bitc::VALUE_SYMTAB_BLOCK_ID:
Chris Lattner86697142007-05-01 05:01:34 +00001534 if (ParseValueSymbolTable())
Chris Lattner0b2482a2007-04-23 21:26:05 +00001535 return true;
Derek Schuff2ea93872012-02-06 22:30:29 +00001536 SeenValueSymbolTable = true;
Chris Lattner0b2482a2007-04-23 21:26:05 +00001537 break;
Chris Lattnere16504e2007-04-24 03:30:34 +00001538 case bitc::CONSTANTS_BLOCK_ID:
Chris Lattner86697142007-05-01 05:01:34 +00001539 if (ParseConstants() || ResolveGlobalAndAliasInits())
Chris Lattnere16504e2007-04-24 03:30:34 +00001540 return true;
1541 break;
Devang Patele54abc92009-07-22 17:43:22 +00001542 case bitc::METADATA_BLOCK_ID:
1543 if (ParseMetadata())
1544 return true;
1545 break;
Chris Lattner48f84872007-05-01 04:59:48 +00001546 case bitc::FUNCTION_BLOCK_ID:
1547 // If this is the first function body we've seen, reverse the
1548 // FunctionsWithBodies list.
Derek Schuff2ea93872012-02-06 22:30:29 +00001549 if (!SeenFirstFunctionBody) {
Chris Lattner48f84872007-05-01 04:59:48 +00001550 std::reverse(FunctionsWithBodies.begin(), FunctionsWithBodies.end());
Derek Schuff2ea93872012-02-06 22:30:29 +00001551 if (GlobalCleanup())
1552 return true;
1553 SeenFirstFunctionBody = true;
Chris Lattner48f84872007-05-01 04:59:48 +00001554 }
Joe Abbeyacb61942013-02-06 22:14:06 +00001555
Chris Lattner980e5aa2007-05-01 05:52:21 +00001556 if (RememberAndSkipFunctionBody())
Chris Lattner48f84872007-05-01 04:59:48 +00001557 return true;
Derek Schuff2ea93872012-02-06 22:30:29 +00001558 // For streaming bitcode, suspend parsing when we reach the function
1559 // bodies. Subsequent materialization calls will resume it when
1560 // necessary. For streaming, the function bodies must be at the end of
1561 // the bitcode. If the bitcode file is old, the symbol table will be
1562 // at the end instead and will not have been seen yet. In this case,
1563 // just finish the parse now.
1564 if (LazyStreamer && SeenValueSymbolTable) {
1565 NextUnreadBit = Stream.GetCurrentBitNo();
1566 return false;
1567 }
Chris Lattner48f84872007-05-01 04:59:48 +00001568 break;
Chad Rosiercbbb0962011-12-07 21:44:12 +00001569 case bitc::USELIST_BLOCK_ID:
1570 if (ParseUseLists())
1571 return true;
1572 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001573 }
1574 continue;
Joe Abbeyacb61942013-02-06 22:14:06 +00001575
Chris Lattner5a4251c2013-01-20 02:13:19 +00001576 case BitstreamEntry::Record:
1577 // The interesting case.
1578 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001579 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00001580
Daniel Dunbara279bc32009-09-20 02:20:51 +00001581
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001582 // Read a record.
Chris Lattner5a4251c2013-01-20 02:13:19 +00001583 switch (Stream.readRecord(Entry.ID, Record)) {
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001584 default: break; // Default behavior, ignore unknown content.
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00001585 case bitc::MODULE_CODE_VERSION: { // VERSION: [version#]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001586 if (Record.size() < 1)
1587 return Error("Malformed MODULE_CODE_VERSION");
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00001588 // Only version #0 and #1 are supported so far.
1589 unsigned module_version = Record[0];
1590 switch (module_version) {
1591 default: return Error("Unknown bitstream version!");
1592 case 0:
1593 UseRelativeIDs = false;
1594 break;
1595 case 1:
1596 UseRelativeIDs = true;
1597 break;
1598 }
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001599 break;
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00001600 }
Chris Lattner15e6d172007-05-04 19:11:41 +00001601 case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001602 std::string S;
1603 if (ConvertToString(Record, 0, S))
1604 return Error("Invalid MODULE_CODE_TRIPLE record");
1605 TheModule->setTargetTriple(S);
1606 break;
1607 }
Chris Lattner15e6d172007-05-04 19:11:41 +00001608 case bitc::MODULE_CODE_DATALAYOUT: { // DATALAYOUT: [strchr x N]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001609 std::string S;
1610 if (ConvertToString(Record, 0, S))
1611 return Error("Invalid MODULE_CODE_DATALAYOUT record");
1612 TheModule->setDataLayout(S);
1613 break;
1614 }
Chris Lattner15e6d172007-05-04 19:11:41 +00001615 case bitc::MODULE_CODE_ASM: { // ASM: [strchr x N]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001616 std::string S;
1617 if (ConvertToString(Record, 0, S))
1618 return Error("Invalid MODULE_CODE_ASM record");
1619 TheModule->setModuleInlineAsm(S);
1620 break;
1621 }
Bill Wendling3defc0b2012-11-28 08:41:48 +00001622 case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N]
1623 // FIXME: Remove in 4.0.
1624 std::string S;
1625 if (ConvertToString(Record, 0, S))
1626 return Error("Invalid MODULE_CODE_DEPLIB record");
1627 // Ignore value.
1628 break;
1629 }
Chris Lattner15e6d172007-05-04 19:11:41 +00001630 case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001631 std::string S;
1632 if (ConvertToString(Record, 0, S))
1633 return Error("Invalid MODULE_CODE_SECTIONNAME record");
1634 SectionTable.push_back(S);
1635 break;
1636 }
Gordon Henriksen5eca0752008-08-17 18:44:35 +00001637 case bitc::MODULE_CODE_GCNAME: { // SECTIONNAME: [strchr x N]
Gordon Henriksen80a75bf2007-12-10 03:18:06 +00001638 std::string S;
1639 if (ConvertToString(Record, 0, S))
Gordon Henriksen5eca0752008-08-17 18:44:35 +00001640 return Error("Invalid MODULE_CODE_GCNAME record");
1641 GCTable.push_back(S);
Gordon Henriksen80a75bf2007-12-10 03:18:06 +00001642 break;
1643 }
Christopher Lambfe63fb92007-12-11 08:59:05 +00001644 // GLOBALVAR: [pointer type, isconst, initid,
Rafael Espindolabea46262011-01-08 16:42:36 +00001645 // linkage, alignment, section, visibility, threadlocal,
1646 // unnamed_addr]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001647 case bitc::MODULE_CODE_GLOBALVAR: {
Chris Lattner36d5e7d2007-04-23 16:04:05 +00001648 if (Record.size() < 6)
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001649 return Error("Invalid MODULE_CODE_GLOBALVAR record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001650 Type *Ty = getTypeByID(Record[0]);
Duncan Sandsf22b7462010-10-28 15:47:26 +00001651 if (!Ty) return Error("Invalid MODULE_CODE_GLOBALVAR record");
Duncan Sands1df98592010-02-16 11:11:14 +00001652 if (!Ty->isPointerTy())
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001653 return Error("Global not a pointer type!");
Christopher Lambfe63fb92007-12-11 08:59:05 +00001654 unsigned AddressSpace = cast<PointerType>(Ty)->getAddressSpace();
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001655 Ty = cast<PointerType>(Ty)->getElementType();
Daniel Dunbara279bc32009-09-20 02:20:51 +00001656
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001657 bool isConstant = Record[1];
1658 GlobalValue::LinkageTypes Linkage = GetDecodedLinkage(Record[3]);
1659 unsigned Alignment = (1 << Record[4]) >> 1;
1660 std::string Section;
1661 if (Record[5]) {
1662 if (Record[5]-1 >= SectionTable.size())
1663 return Error("Invalid section ID");
1664 Section = SectionTable[Record[5]-1];
1665 }
Chris Lattner36d5e7d2007-04-23 16:04:05 +00001666 GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility;
Chris Lattner5f32c012007-05-06 19:27:46 +00001667 if (Record.size() > 6)
1668 Visibility = GetDecodedVisibility(Record[6]);
Hans Wennborgce718ff2012-06-23 11:37:03 +00001669
1670 GlobalVariable::ThreadLocalMode TLM = GlobalVariable::NotThreadLocal;
Chris Lattner5f32c012007-05-06 19:27:46 +00001671 if (Record.size() > 7)
Hans Wennborgce718ff2012-06-23 11:37:03 +00001672 TLM = GetDecodedThreadLocalMode(Record[7]);
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001673
Rafael Espindolabea46262011-01-08 16:42:36 +00001674 bool UnnamedAddr = false;
1675 if (Record.size() > 8)
1676 UnnamedAddr = Record[8];
1677
Michael Gottesmana2de37c2013-02-05 05:57:38 +00001678 bool ExternallyInitialized = false;
1679 if (Record.size() > 9)
1680 ExternallyInitialized = Record[9];
1681
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001682 GlobalVariable *NewGV =
Daniel Dunbara279bc32009-09-20 02:20:51 +00001683 new GlobalVariable(*TheModule, Ty, isConstant, Linkage, 0, "", 0,
Michael Gottesmana2de37c2013-02-05 05:57:38 +00001684 TLM, AddressSpace, ExternallyInitialized);
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001685 NewGV->setAlignment(Alignment);
1686 if (!Section.empty())
1687 NewGV->setSection(Section);
1688 NewGV->setVisibility(Visibility);
Rafael Espindolabea46262011-01-08 16:42:36 +00001689 NewGV->setUnnamedAddr(UnnamedAddr);
Daniel Dunbara279bc32009-09-20 02:20:51 +00001690
Chris Lattner0b2482a2007-04-23 21:26:05 +00001691 ValueList.push_back(NewGV);
Daniel Dunbara279bc32009-09-20 02:20:51 +00001692
Chris Lattner6dbfd7b2007-04-24 00:18:21 +00001693 // Remember which value to use for the global initializer.
1694 if (unsigned InitID = Record[2])
1695 GlobalInits.push_back(std::make_pair(NewGV, InitID-1));
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001696 break;
1697 }
Chris Lattnera9bb7132007-05-08 05:38:01 +00001698 // FUNCTION: [type, callingconv, isproto, linkage, paramattr,
Rafael Espindolabea46262011-01-08 16:42:36 +00001699 // alignment, section, visibility, gc, unnamed_addr]
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001700 case bitc::MODULE_CODE_FUNCTION: {
Chris Lattnera9bb7132007-05-08 05:38:01 +00001701 if (Record.size() < 8)
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001702 return Error("Invalid MODULE_CODE_FUNCTION record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001703 Type *Ty = getTypeByID(Record[0]);
Duncan Sandsf22b7462010-10-28 15:47:26 +00001704 if (!Ty) return Error("Invalid MODULE_CODE_FUNCTION record");
Duncan Sands1df98592010-02-16 11:11:14 +00001705 if (!Ty->isPointerTy())
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001706 return Error("Function not a pointer type!");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001707 FunctionType *FTy =
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001708 dyn_cast<FunctionType>(cast<PointerType>(Ty)->getElementType());
1709 if (!FTy)
1710 return Error("Function not a pointer to function type!");
1711
Gabor Greif051a9502008-04-06 20:25:17 +00001712 Function *Func = Function::Create(FTy, GlobalValue::ExternalLinkage,
1713 "", TheModule);
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001714
Sandeep Patel65c3c8f2009-09-02 08:44:58 +00001715 Func->setCallingConv(static_cast<CallingConv::ID>(Record[1]));
Chris Lattner48f84872007-05-01 04:59:48 +00001716 bool isProto = Record[2];
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001717 Func->setLinkage(GetDecodedLinkage(Record[3]));
Devang Patel05988662008-09-25 21:00:45 +00001718 Func->setAttributes(getAttributes(Record[4]));
Daniel Dunbara279bc32009-09-20 02:20:51 +00001719
Chris Lattnera9bb7132007-05-08 05:38:01 +00001720 Func->setAlignment((1 << Record[5]) >> 1);
1721 if (Record[6]) {
1722 if (Record[6]-1 >= SectionTable.size())
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001723 return Error("Invalid section ID");
Chris Lattnera9bb7132007-05-08 05:38:01 +00001724 Func->setSection(SectionTable[Record[6]-1]);
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001725 }
Chris Lattnera9bb7132007-05-08 05:38:01 +00001726 Func->setVisibility(GetDecodedVisibility(Record[7]));
Gordon Henriksen80a75bf2007-12-10 03:18:06 +00001727 if (Record.size() > 8 && Record[8]) {
Gordon Henriksen5eca0752008-08-17 18:44:35 +00001728 if (Record[8]-1 > GCTable.size())
1729 return Error("Invalid GC ID");
1730 Func->setGC(GCTable[Record[8]-1].c_str());
Gordon Henriksen80a75bf2007-12-10 03:18:06 +00001731 }
Rafael Espindolabea46262011-01-08 16:42:36 +00001732 bool UnnamedAddr = false;
1733 if (Record.size() > 9)
1734 UnnamedAddr = Record[9];
1735 Func->setUnnamedAddr(UnnamedAddr);
Chris Lattner0b2482a2007-04-23 21:26:05 +00001736 ValueList.push_back(Func);
Daniel Dunbara279bc32009-09-20 02:20:51 +00001737
Chris Lattner48f84872007-05-01 04:59:48 +00001738 // If this is a function with a body, remember the prototype we are
1739 // creating now, so that we can match up the body with them later.
Derek Schuff2ea93872012-02-06 22:30:29 +00001740 if (!isProto) {
Chris Lattner48f84872007-05-01 04:59:48 +00001741 FunctionsWithBodies.push_back(Func);
Derek Schuff2ea93872012-02-06 22:30:29 +00001742 if (LazyStreamer) DeferredFunctionInfo[Func] = 0;
1743 }
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001744 break;
1745 }
Anton Korobeynikov91342d82008-03-12 00:49:19 +00001746 // ALIAS: [alias type, aliasee val#, linkage]
Anton Korobeynikovf8342b92008-03-11 21:40:17 +00001747 // ALIAS: [alias type, aliasee val#, linkage, visibility]
Chris Lattner198f34a2007-04-26 03:27:58 +00001748 case bitc::MODULE_CODE_ALIAS: {
Chris Lattner07d98b42007-04-26 02:46:40 +00001749 if (Record.size() < 3)
1750 return Error("Invalid MODULE_ALIAS record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00001751 Type *Ty = getTypeByID(Record[0]);
Duncan Sandsf22b7462010-10-28 15:47:26 +00001752 if (!Ty) return Error("Invalid MODULE_ALIAS record");
Duncan Sands1df98592010-02-16 11:11:14 +00001753 if (!Ty->isPointerTy())
Chris Lattner07d98b42007-04-26 02:46:40 +00001754 return Error("Function not a pointer type!");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001755
Chris Lattner07d98b42007-04-26 02:46:40 +00001756 GlobalAlias *NewGA = new GlobalAlias(Ty, GetDecodedLinkage(Record[2]),
1757 "", 0, TheModule);
Anton Korobeynikov91342d82008-03-12 00:49:19 +00001758 // Old bitcode files didn't have visibility field.
1759 if (Record.size() > 3)
1760 NewGA->setVisibility(GetDecodedVisibility(Record[3]));
Chris Lattner07d98b42007-04-26 02:46:40 +00001761 ValueList.push_back(NewGA);
1762 AliasInits.push_back(std::make_pair(NewGA, Record[1]));
1763 break;
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001764 }
Chris Lattner198f34a2007-04-26 03:27:58 +00001765 /// MODULE_CODE_PURGEVALS: [numvals]
1766 case bitc::MODULE_CODE_PURGEVALS:
1767 // Trim down the value list to the specified size.
1768 if (Record.size() < 1 || Record[0] > ValueList.size())
1769 return Error("Invalid MODULE_PURGEVALS record");
1770 ValueList.shrinkTo(Record[0]);
1771 break;
1772 }
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001773 Record.clear();
1774 }
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001775}
1776
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00001777bool BitcodeReader::ParseBitcodeInto(Module *M) {
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001778 TheModule = 0;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001779
Derek Schuff2ea93872012-02-06 22:30:29 +00001780 if (InitStream()) return true;
Daniel Dunbara279bc32009-09-20 02:20:51 +00001781
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001782 // Sniff for the signature.
1783 if (Stream.Read(8) != 'B' ||
1784 Stream.Read(8) != 'C' ||
1785 Stream.Read(4) != 0x0 ||
1786 Stream.Read(4) != 0xC ||
1787 Stream.Read(4) != 0xE ||
1788 Stream.Read(4) != 0xD)
1789 return Error("Invalid bitcode signature");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001790
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001791 // We expect a number of well-defined blocks, though we don't necessarily
1792 // need to understand them all.
Chris Lattner5a4251c2013-01-20 02:13:19 +00001793 while (1) {
1794 if (Stream.AtEndOfStream())
1795 return false;
Joe Abbeyacb61942013-02-06 22:14:06 +00001796
Chris Lattner5a4251c2013-01-20 02:13:19 +00001797 BitstreamEntry Entry =
1798 Stream.advance(BitstreamCursor::AF_DontAutoprocessAbbrevs);
Joe Abbeyacb61942013-02-06 22:14:06 +00001799
Chris Lattner5a4251c2013-01-20 02:13:19 +00001800 switch (Entry.Kind) {
1801 case BitstreamEntry::Error:
1802 Error("malformed module file");
1803 return true;
1804 case BitstreamEntry::EndBlock:
1805 return false;
Joe Abbeyacb61942013-02-06 22:14:06 +00001806
Chris Lattner5a4251c2013-01-20 02:13:19 +00001807 case BitstreamEntry::SubBlock:
1808 switch (Entry.ID) {
1809 case bitc::BLOCKINFO_BLOCK_ID:
1810 if (Stream.ReadBlockInfoBlock())
1811 return Error("Malformed BlockInfoBlock");
1812 break;
1813 case bitc::MODULE_BLOCK_ID:
1814 // Reject multiple MODULE_BLOCK's in a single bitstream.
1815 if (TheModule)
1816 return Error("Multiple MODULE_BLOCKs in same stream");
1817 TheModule = M;
1818 if (ParseModule(false))
1819 return true;
1820 if (LazyStreamer) return false;
1821 break;
1822 default:
1823 if (Stream.SkipBlock())
1824 return Error("Malformed block record");
1825 break;
1826 }
1827 continue;
1828 case BitstreamEntry::Record:
1829 // There should be no records in the top-level of blocks.
Joe Abbeyacb61942013-02-06 22:14:06 +00001830
Chris Lattner5a4251c2013-01-20 02:13:19 +00001831 // The ranlib in Xcode 4 will align archive members by appending newlines
Chad Rosier6ff9aa22011-08-09 22:23:40 +00001832 // to the end of them. If this file size is a multiple of 4 but not 8, we
1833 // have to read and ignore these final 4 bytes :-(
Chris Lattner5a4251c2013-01-20 02:13:19 +00001834 if (Stream.getAbbrevIDWidth() == 2 && Entry.ID == 2 &&
Rafael Espindolac9687b32011-05-26 18:59:54 +00001835 Stream.Read(6) == 2 && Stream.Read(24) == 0xa0a0a &&
Bill Wendling2127c9b2012-07-19 00:15:11 +00001836 Stream.AtEndOfStream())
Rafael Espindolac9687b32011-05-26 18:59:54 +00001837 return false;
Joe Abbeyacb61942013-02-06 22:14:06 +00001838
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001839 return Error("Invalid record at top-level");
Rafael Espindolac9687b32011-05-26 18:59:54 +00001840 }
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001841 }
Chris Lattnercaee0dc2007-04-22 06:23:29 +00001842}
Chris Lattnerc453f762007-04-29 07:54:31 +00001843
Bill Wendling34711742010-10-06 01:22:42 +00001844bool BitcodeReader::ParseModuleTriple(std::string &Triple) {
1845 if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
1846 return Error("Malformed block record");
1847
1848 SmallVector<uint64_t, 64> Record;
1849
1850 // Read all the records for this module.
Chris Lattner5a4251c2013-01-20 02:13:19 +00001851 while (1) {
1852 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +00001853
Chris Lattner5a4251c2013-01-20 02:13:19 +00001854 switch (Entry.Kind) {
1855 case BitstreamEntry::SubBlock: // Handled for us already.
1856 case BitstreamEntry::Error:
1857 return Error("malformed module block");
1858 case BitstreamEntry::EndBlock:
Bill Wendling34711742010-10-06 01:22:42 +00001859 return false;
Chris Lattner5a4251c2013-01-20 02:13:19 +00001860 case BitstreamEntry::Record:
1861 // The interesting case.
1862 break;
Bill Wendling34711742010-10-06 01:22:42 +00001863 }
1864
1865 // Read a record.
Chris Lattner5a4251c2013-01-20 02:13:19 +00001866 switch (Stream.readRecord(Entry.ID, Record)) {
Bill Wendling34711742010-10-06 01:22:42 +00001867 default: break; // Default behavior, ignore unknown content.
Bill Wendling34711742010-10-06 01:22:42 +00001868 case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N]
1869 std::string S;
1870 if (ConvertToString(Record, 0, S))
1871 return Error("Invalid MODULE_CODE_TRIPLE record");
1872 Triple = S;
1873 break;
1874 }
1875 }
1876 Record.clear();
1877 }
Bill Wendling34711742010-10-06 01:22:42 +00001878}
1879
1880bool BitcodeReader::ParseTriple(std::string &Triple) {
Derek Schuff2ea93872012-02-06 22:30:29 +00001881 if (InitStream()) return true;
Bill Wendling34711742010-10-06 01:22:42 +00001882
1883 // Sniff for the signature.
1884 if (Stream.Read(8) != 'B' ||
1885 Stream.Read(8) != 'C' ||
1886 Stream.Read(4) != 0x0 ||
1887 Stream.Read(4) != 0xC ||
1888 Stream.Read(4) != 0xE ||
1889 Stream.Read(4) != 0xD)
1890 return Error("Invalid bitcode signature");
1891
1892 // We expect a number of well-defined blocks, though we don't necessarily
1893 // need to understand them all.
Chris Lattner5a4251c2013-01-20 02:13:19 +00001894 while (1) {
1895 BitstreamEntry Entry = Stream.advance();
Joe Abbeyacb61942013-02-06 22:14:06 +00001896
Chris Lattner5a4251c2013-01-20 02:13:19 +00001897 switch (Entry.Kind) {
1898 case BitstreamEntry::Error:
1899 Error("malformed module file");
1900 return true;
1901 case BitstreamEntry::EndBlock:
1902 return false;
Joe Abbeyacb61942013-02-06 22:14:06 +00001903
Chris Lattner5a4251c2013-01-20 02:13:19 +00001904 case BitstreamEntry::SubBlock:
1905 if (Entry.ID == bitc::MODULE_BLOCK_ID)
1906 return ParseModuleTriple(Triple);
Joe Abbeyacb61942013-02-06 22:14:06 +00001907
Chris Lattner5a4251c2013-01-20 02:13:19 +00001908 // Ignore other sub-blocks.
1909 if (Stream.SkipBlock()) {
1910 Error("malformed block record in AST file");
Bill Wendling34711742010-10-06 01:22:42 +00001911 return true;
Chris Lattner5a4251c2013-01-20 02:13:19 +00001912 }
1913 continue;
Joe Abbeyacb61942013-02-06 22:14:06 +00001914
Chris Lattner5a4251c2013-01-20 02:13:19 +00001915 case BitstreamEntry::Record:
1916 Stream.skipRecord(Entry.ID);
1917 continue;
Bill Wendling34711742010-10-06 01:22:42 +00001918 }
1919 }
Bill Wendling34711742010-10-06 01:22:42 +00001920}
1921
Devang Patele8e02132009-09-18 19:26:43 +00001922/// ParseMetadataAttachment - Parse metadata attachments.
1923bool BitcodeReader::ParseMetadataAttachment() {
1924 if (Stream.EnterSubBlock(bitc::METADATA_ATTACHMENT_ID))
1925 return Error("Malformed block record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001926
Devang Patele8e02132009-09-18 19:26:43 +00001927 SmallVector<uint64_t, 64> Record;
Chris Lattner5a4251c2013-01-20 02:13:19 +00001928 while (1) {
1929 BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
Joe Abbeyacb61942013-02-06 22:14:06 +00001930
Chris Lattner5a4251c2013-01-20 02:13:19 +00001931 switch (Entry.Kind) {
1932 case BitstreamEntry::SubBlock: // Handled for us already.
1933 case BitstreamEntry::Error:
1934 return Error("malformed metadata block");
1935 case BitstreamEntry::EndBlock:
1936 return false;
1937 case BitstreamEntry::Record:
1938 // The interesting case.
Devang Patele8e02132009-09-18 19:26:43 +00001939 break;
1940 }
Chris Lattner5a4251c2013-01-20 02:13:19 +00001941
Devang Patele8e02132009-09-18 19:26:43 +00001942 // Read a metadata attachment record.
1943 Record.clear();
Chris Lattner5a4251c2013-01-20 02:13:19 +00001944 switch (Stream.readRecord(Entry.ID, Record)) {
Devang Patele8e02132009-09-18 19:26:43 +00001945 default: // Default behavior: ignore.
1946 break;
Chris Lattner9d61dd92011-06-17 17:50:30 +00001947 case bitc::METADATA_ATTACHMENT: {
Devang Patele8e02132009-09-18 19:26:43 +00001948 unsigned RecordLength = Record.size();
1949 if (Record.empty() || (RecordLength - 1) % 2 == 1)
Daniel Dunbara279bc32009-09-20 02:20:51 +00001950 return Error ("Invalid METADATA_ATTACHMENT reader!");
Devang Patele8e02132009-09-18 19:26:43 +00001951 Instruction *Inst = InstructionList[Record[0]];
1952 for (unsigned i = 1; i != RecordLength; i = i+2) {
Devang Patela2148402009-09-28 21:14:55 +00001953 unsigned Kind = Record[i];
Dan Gohman19538d12010-07-20 21:42:28 +00001954 DenseMap<unsigned, unsigned>::iterator I =
1955 MDKindMap.find(Kind);
1956 if (I == MDKindMap.end())
1957 return Error("Invalid metadata kind ID");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001958 Value *Node = MDValueList.getValueFwdRef(Record[i+1]);
Dan Gohman19538d12010-07-20 21:42:28 +00001959 Inst->setMetadata(I->second, cast<MDNode>(Node));
Devang Patele8e02132009-09-18 19:26:43 +00001960 }
1961 break;
1962 }
1963 }
1964 }
Devang Patele8e02132009-09-18 19:26:43 +00001965}
Chris Lattner48f84872007-05-01 04:59:48 +00001966
Chris Lattner980e5aa2007-05-01 05:52:21 +00001967/// ParseFunctionBody - Lazily parse the specified function body block.
1968bool BitcodeReader::ParseFunctionBody(Function *F) {
Chris Lattnere17b6582007-05-05 00:17:00 +00001969 if (Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID))
Chris Lattner980e5aa2007-05-01 05:52:21 +00001970 return Error("Malformed block record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00001971
Nick Lewycky9a49f152010-02-25 08:30:17 +00001972 InstructionList.clear();
Chris Lattner980e5aa2007-05-01 05:52:21 +00001973 unsigned ModuleValueListSize = ValueList.size();
Dan Gohman69813832010-08-25 20:22:53 +00001974 unsigned ModuleMDValueListSize = MDValueList.size();
Daniel Dunbara279bc32009-09-20 02:20:51 +00001975
Chris Lattner980e5aa2007-05-01 05:52:21 +00001976 // Add all the function arguments to the value table.
1977 for(Function::arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I)
1978 ValueList.push_back(I);
Daniel Dunbara279bc32009-09-20 02:20:51 +00001979
Chris Lattnera7c49aa2007-05-01 07:01:57 +00001980 unsigned NextValueNo = ValueList.size();
Chris Lattner231cbcb2007-05-02 04:27:25 +00001981 BasicBlock *CurBB = 0;
1982 unsigned CurBBNo = 0;
1983
Chris Lattnera6245242010-04-03 02:17:50 +00001984 DebugLoc LastLoc;
Michael Ilseman407a6162012-11-15 22:34:00 +00001985
Chris Lattner980e5aa2007-05-01 05:52:21 +00001986 // Read all the records.
1987 SmallVector<uint64_t, 64> Record;
1988 while (1) {
Chris Lattner5a4251c2013-01-20 02:13:19 +00001989 BitstreamEntry Entry = Stream.advance();
Joe Abbeyacb61942013-02-06 22:14:06 +00001990
Chris Lattner5a4251c2013-01-20 02:13:19 +00001991 switch (Entry.Kind) {
1992 case BitstreamEntry::Error:
1993 return Error("Bitcode error in function block");
1994 case BitstreamEntry::EndBlock:
1995 goto OutOfRecordLoop;
Joe Abbeyacb61942013-02-06 22:14:06 +00001996
Chris Lattner5a4251c2013-01-20 02:13:19 +00001997 case BitstreamEntry::SubBlock:
1998 switch (Entry.ID) {
Chris Lattner980e5aa2007-05-01 05:52:21 +00001999 default: // Skip unknown content.
2000 if (Stream.SkipBlock())
2001 return Error("Malformed block record");
2002 break;
2003 case bitc::CONSTANTS_BLOCK_ID:
2004 if (ParseConstants()) return true;
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002005 NextValueNo = ValueList.size();
Chris Lattner980e5aa2007-05-01 05:52:21 +00002006 break;
2007 case bitc::VALUE_SYMTAB_BLOCK_ID:
2008 if (ParseValueSymbolTable()) return true;
2009 break;
Devang Patele8e02132009-09-18 19:26:43 +00002010 case bitc::METADATA_ATTACHMENT_ID:
Daniel Dunbara279bc32009-09-20 02:20:51 +00002011 if (ParseMetadataAttachment()) return true;
2012 break;
Victor Hernandezfab9e99c2010-01-13 19:34:08 +00002013 case bitc::METADATA_BLOCK_ID:
2014 if (ParseMetadata()) return true;
2015 break;
Chris Lattner980e5aa2007-05-01 05:52:21 +00002016 }
2017 continue;
Joe Abbeyacb61942013-02-06 22:14:06 +00002018
Chris Lattner5a4251c2013-01-20 02:13:19 +00002019 case BitstreamEntry::Record:
2020 // The interesting case.
2021 break;
Chris Lattner980e5aa2007-05-01 05:52:21 +00002022 }
Joe Abbeyacb61942013-02-06 22:14:06 +00002023
Chris Lattner980e5aa2007-05-01 05:52:21 +00002024 // Read a record.
2025 Record.clear();
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002026 Instruction *I = 0;
Chris Lattner5a4251c2013-01-20 02:13:19 +00002027 unsigned BitCode = Stream.readRecord(Entry.ID, Record);
Dan Gohman1224c382009-07-20 21:19:07 +00002028 switch (BitCode) {
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002029 default: // Default behavior: reject
2030 return Error("Unknown instruction");
Chris Lattner980e5aa2007-05-01 05:52:21 +00002031 case bitc::FUNC_CODE_DECLAREBLOCKS: // DECLAREBLOCKS: [nblocks]
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002032 if (Record.size() < 1 || Record[0] == 0)
2033 return Error("Invalid DECLAREBLOCKS record");
Chris Lattner980e5aa2007-05-01 05:52:21 +00002034 // Create all the basic blocks for the function.
Chris Lattnerf61e6452007-05-03 22:09:51 +00002035 FunctionBBs.resize(Record[0]);
Chris Lattner980e5aa2007-05-01 05:52:21 +00002036 for (unsigned i = 0, e = FunctionBBs.size(); i != e; ++i)
Owen Anderson1d0be152009-08-13 21:58:54 +00002037 FunctionBBs[i] = BasicBlock::Create(Context, "", F);
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002038 CurBB = FunctionBBs[0];
2039 continue;
Michael Ilseman407a6162012-11-15 22:34:00 +00002040
Chris Lattnera6245242010-04-03 02:17:50 +00002041 case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: // DEBUG_LOC_AGAIN
2042 // This record indicates that the last instruction is at the same
2043 // location as the previous instruction with a location.
2044 I = 0;
Michael Ilseman407a6162012-11-15 22:34:00 +00002045
Chris Lattnera6245242010-04-03 02:17:50 +00002046 // Get the last instruction emitted.
2047 if (CurBB && !CurBB->empty())
2048 I = &CurBB->back();
2049 else if (CurBBNo && FunctionBBs[CurBBNo-1] &&
2050 !FunctionBBs[CurBBNo-1]->empty())
2051 I = &FunctionBBs[CurBBNo-1]->back();
Michael Ilseman407a6162012-11-15 22:34:00 +00002052
Chris Lattnera6245242010-04-03 02:17:50 +00002053 if (I == 0) return Error("Invalid DEBUG_LOC_AGAIN record");
2054 I->setDebugLoc(LastLoc);
2055 I = 0;
2056 continue;
Michael Ilseman407a6162012-11-15 22:34:00 +00002057
Chris Lattner4f6bab92011-06-17 18:17:37 +00002058 case bitc::FUNC_CODE_DEBUG_LOC: { // DEBUG_LOC: [line, col, scope, ia]
Chris Lattnera6245242010-04-03 02:17:50 +00002059 I = 0; // Get the last instruction emitted.
2060 if (CurBB && !CurBB->empty())
2061 I = &CurBB->back();
2062 else if (CurBBNo && FunctionBBs[CurBBNo-1] &&
2063 !FunctionBBs[CurBBNo-1]->empty())
2064 I = &FunctionBBs[CurBBNo-1]->back();
2065 if (I == 0 || Record.size() < 4)
2066 return Error("Invalid FUNC_CODE_DEBUG_LOC record");
Michael Ilseman407a6162012-11-15 22:34:00 +00002067
Chris Lattnera6245242010-04-03 02:17:50 +00002068 unsigned Line = Record[0], Col = Record[1];
2069 unsigned ScopeID = Record[2], IAID = Record[3];
Michael Ilseman407a6162012-11-15 22:34:00 +00002070
Chris Lattnera6245242010-04-03 02:17:50 +00002071 MDNode *Scope = 0, *IA = 0;
2072 if (ScopeID) Scope = cast<MDNode>(MDValueList.getValueFwdRef(ScopeID-1));
2073 if (IAID) IA = cast<MDNode>(MDValueList.getValueFwdRef(IAID-1));
2074 LastLoc = DebugLoc::get(Line, Col, Scope, IA);
2075 I->setDebugLoc(LastLoc);
2076 I = 0;
2077 continue;
2078 }
2079
Chris Lattnerabfbf852007-05-06 00:21:25 +00002080 case bitc::FUNC_CODE_INST_BINOP: { // BINOP: [opval, ty, opval, opcode]
2081 unsigned OpNum = 0;
2082 Value *LHS, *RHS;
2083 if (getValueTypePair(Record, OpNum, NextValueNo, LHS) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002084 popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) ||
Dan Gohman1224c382009-07-20 21:19:07 +00002085 OpNum+1 > Record.size())
Chris Lattnerabfbf852007-05-06 00:21:25 +00002086 return Error("Invalid BINOP record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002087
Dan Gohman1224c382009-07-20 21:19:07 +00002088 int Opc = GetDecodedBinaryOpcode(Record[OpNum++], LHS->getType());
Chris Lattnerabfbf852007-05-06 00:21:25 +00002089 if (Opc == -1) return Error("Invalid BINOP record");
Gabor Greif7cbd8a32008-05-16 19:29:10 +00002090 I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
Devang Patele8e02132009-09-18 19:26:43 +00002091 InstructionList.push_back(I);
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002092 if (OpNum < Record.size()) {
2093 if (Opc == Instruction::Add ||
2094 Opc == Instruction::Sub ||
Chris Lattnerf067d582011-02-07 16:40:21 +00002095 Opc == Instruction::Mul ||
2096 Opc == Instruction::Shl) {
Dan Gohman26793ed2010-01-25 21:55:39 +00002097 if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP))
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002098 cast<BinaryOperator>(I)->setHasNoSignedWrap(true);
Dan Gohman26793ed2010-01-25 21:55:39 +00002099 if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP))
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002100 cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true);
Chris Lattner35bda892011-02-06 21:44:57 +00002101 } else if (Opc == Instruction::SDiv ||
Chris Lattnerf067d582011-02-07 16:40:21 +00002102 Opc == Instruction::UDiv ||
2103 Opc == Instruction::LShr ||
2104 Opc == Instruction::AShr) {
Chris Lattner35bda892011-02-06 21:44:57 +00002105 if (Record[OpNum] & (1 << bitc::PEO_EXACT))
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002106 cast<BinaryOperator>(I)->setIsExact(true);
Michael Ilseman495d10a2012-11-27 00:43:38 +00002107 } else if (isa<FPMathOperator>(I)) {
2108 FastMathFlags FMF;
Michael Ilseman1638b832012-12-09 21:12:04 +00002109 if (0 != (Record[OpNum] & FastMathFlags::UnsafeAlgebra))
2110 FMF.setUnsafeAlgebra();
2111 if (0 != (Record[OpNum] & FastMathFlags::NoNaNs))
2112 FMF.setNoNaNs();
2113 if (0 != (Record[OpNum] & FastMathFlags::NoInfs))
2114 FMF.setNoInfs();
2115 if (0 != (Record[OpNum] & FastMathFlags::NoSignedZeros))
2116 FMF.setNoSignedZeros();
2117 if (0 != (Record[OpNum] & FastMathFlags::AllowReciprocal))
2118 FMF.setAllowReciprocal();
Michael Ilseman495d10a2012-11-27 00:43:38 +00002119 if (FMF.any())
2120 I->setFastMathFlags(FMF);
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002121 }
Michael Ilseman495d10a2012-11-27 00:43:38 +00002122
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002123 }
Chris Lattner980e5aa2007-05-01 05:52:21 +00002124 break;
2125 }
Chris Lattnerabfbf852007-05-06 00:21:25 +00002126 case bitc::FUNC_CODE_INST_CAST: { // CAST: [opval, opty, destty, castopc]
2127 unsigned OpNum = 0;
2128 Value *Op;
2129 if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
2130 OpNum+2 != Record.size())
2131 return Error("Invalid CAST record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002132
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002133 Type *ResTy = getTypeByID(Record[OpNum]);
Chris Lattnerabfbf852007-05-06 00:21:25 +00002134 int Opc = GetDecodedCastOpcode(Record[OpNum+1]);
2135 if (Opc == -1 || ResTy == 0)
Chris Lattner231cbcb2007-05-02 04:27:25 +00002136 return Error("Invalid CAST record");
Gabor Greif7cbd8a32008-05-16 19:29:10 +00002137 I = CastInst::Create((Instruction::CastOps)Opc, Op, ResTy);
Devang Patele8e02132009-09-18 19:26:43 +00002138 InstructionList.push_back(I);
Chris Lattner231cbcb2007-05-02 04:27:25 +00002139 break;
2140 }
Dan Gohmandd8004d2009-07-27 21:53:46 +00002141 case bitc::FUNC_CODE_INST_INBOUNDS_GEP:
Chris Lattner15e6d172007-05-04 19:11:41 +00002142 case bitc::FUNC_CODE_INST_GEP: { // GEP: [n x operands]
Chris Lattner7337ab92007-05-06 00:00:00 +00002143 unsigned OpNum = 0;
2144 Value *BasePtr;
2145 if (getValueTypePair(Record, OpNum, NextValueNo, BasePtr))
Chris Lattner01ff65f2007-05-02 05:16:49 +00002146 return Error("Invalid GEP record");
2147
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002148 SmallVector<Value*, 16> GEPIdx;
Chris Lattner7337ab92007-05-06 00:00:00 +00002149 while (OpNum != Record.size()) {
2150 Value *Op;
2151 if (getValueTypePair(Record, OpNum, NextValueNo, Op))
Chris Lattner01ff65f2007-05-02 05:16:49 +00002152 return Error("Invalid GEP record");
Chris Lattner7337ab92007-05-06 00:00:00 +00002153 GEPIdx.push_back(Op);
Chris Lattner01ff65f2007-05-02 05:16:49 +00002154 }
2155
Jay Foada9203102011-07-25 09:48:08 +00002156 I = GetElementPtrInst::Create(BasePtr, GEPIdx);
Devang Patele8e02132009-09-18 19:26:43 +00002157 InstructionList.push_back(I);
Dan Gohmandd8004d2009-07-27 21:53:46 +00002158 if (BitCode == bitc::FUNC_CODE_INST_INBOUNDS_GEP)
Dan Gohmanf8dbee72009-09-07 23:54:19 +00002159 cast<GetElementPtrInst>(I)->setIsInBounds(true);
Chris Lattner01ff65f2007-05-02 05:16:49 +00002160 break;
2161 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002162
Dan Gohman81a0c0b2008-05-31 00:58:22 +00002163 case bitc::FUNC_CODE_INST_EXTRACTVAL: {
2164 // EXTRACTVAL: [opty, opval, n x indices]
Dan Gohmane4977cf2008-05-23 01:55:30 +00002165 unsigned OpNum = 0;
2166 Value *Agg;
2167 if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
2168 return Error("Invalid EXTRACTVAL record");
2169
Dan Gohman81a0c0b2008-05-31 00:58:22 +00002170 SmallVector<unsigned, 4> EXTRACTVALIdx;
2171 for (unsigned RecSize = Record.size();
2172 OpNum != RecSize; ++OpNum) {
2173 uint64_t Index = Record[OpNum];
2174 if ((unsigned)Index != Index)
2175 return Error("Invalid EXTRACTVAL index");
2176 EXTRACTVALIdx.push_back((unsigned)Index);
Dan Gohmane4977cf2008-05-23 01:55:30 +00002177 }
2178
Jay Foadfc6d3a42011-07-13 10:26:04 +00002179 I = ExtractValueInst::Create(Agg, EXTRACTVALIdx);
Devang Patele8e02132009-09-18 19:26:43 +00002180 InstructionList.push_back(I);
Dan Gohmane4977cf2008-05-23 01:55:30 +00002181 break;
2182 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002183
Dan Gohman81a0c0b2008-05-31 00:58:22 +00002184 case bitc::FUNC_CODE_INST_INSERTVAL: {
2185 // INSERTVAL: [opty, opval, opty, opval, n x indices]
Dan Gohmane4977cf2008-05-23 01:55:30 +00002186 unsigned OpNum = 0;
2187 Value *Agg;
2188 if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
2189 return Error("Invalid INSERTVAL record");
2190 Value *Val;
2191 if (getValueTypePair(Record, OpNum, NextValueNo, Val))
2192 return Error("Invalid INSERTVAL record");
2193
Dan Gohman81a0c0b2008-05-31 00:58:22 +00002194 SmallVector<unsigned, 4> INSERTVALIdx;
2195 for (unsigned RecSize = Record.size();
2196 OpNum != RecSize; ++OpNum) {
2197 uint64_t Index = Record[OpNum];
2198 if ((unsigned)Index != Index)
2199 return Error("Invalid INSERTVAL index");
2200 INSERTVALIdx.push_back((unsigned)Index);
Dan Gohmane4977cf2008-05-23 01:55:30 +00002201 }
2202
Jay Foadfc6d3a42011-07-13 10:26:04 +00002203 I = InsertValueInst::Create(Agg, Val, INSERTVALIdx);
Devang Patele8e02132009-09-18 19:26:43 +00002204 InstructionList.push_back(I);
Dan Gohmane4977cf2008-05-23 01:55:30 +00002205 break;
2206 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002207
Chris Lattnerabfbf852007-05-06 00:21:25 +00002208 case bitc::FUNC_CODE_INST_SELECT: { // SELECT: [opval, ty, opval, opval]
Dan Gohmanfb2bbbe2008-09-16 01:01:33 +00002209 // obsolete form of select
2210 // handles select i1 ... in old bitcode
Chris Lattnerabfbf852007-05-06 00:21:25 +00002211 unsigned OpNum = 0;
2212 Value *TrueVal, *FalseVal, *Cond;
2213 if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002214 popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) ||
2215 popValue(Record, OpNum, NextValueNo, Type::getInt1Ty(Context), Cond))
Chris Lattner01ff65f2007-05-02 05:16:49 +00002216 return Error("Invalid SELECT record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002217
Dan Gohmanfb2bbbe2008-09-16 01:01:33 +00002218 I = SelectInst::Create(Cond, TrueVal, FalseVal);
Devang Patele8e02132009-09-18 19:26:43 +00002219 InstructionList.push_back(I);
Dan Gohmanfb2bbbe2008-09-16 01:01:33 +00002220 break;
2221 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002222
Dan Gohmanfb2bbbe2008-09-16 01:01:33 +00002223 case bitc::FUNC_CODE_INST_VSELECT: {// VSELECT: [ty,opval,opval,predty,pred]
2224 // new form of select
2225 // handles select i1 or select [N x i1]
2226 unsigned OpNum = 0;
2227 Value *TrueVal, *FalseVal, *Cond;
2228 if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002229 popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) ||
Dan Gohmanfb2bbbe2008-09-16 01:01:33 +00002230 getValueTypePair(Record, OpNum, NextValueNo, Cond))
2231 return Error("Invalid SELECT record");
Dan Gohmanf72fb672008-09-09 01:02:47 +00002232
2233 // select condition can be either i1 or [N x i1]
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002234 if (VectorType* vector_type =
2235 dyn_cast<VectorType>(Cond->getType())) {
Dan Gohmanf72fb672008-09-09 01:02:47 +00002236 // expect <n x i1>
Daniel Dunbara279bc32009-09-20 02:20:51 +00002237 if (vector_type->getElementType() != Type::getInt1Ty(Context))
Dan Gohmanf72fb672008-09-09 01:02:47 +00002238 return Error("Invalid SELECT condition type");
2239 } else {
2240 // expect i1
Daniel Dunbara279bc32009-09-20 02:20:51 +00002241 if (Cond->getType() != Type::getInt1Ty(Context))
Dan Gohmanf72fb672008-09-09 01:02:47 +00002242 return Error("Invalid SELECT condition type");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002243 }
2244
Gabor Greif051a9502008-04-06 20:25:17 +00002245 I = SelectInst::Create(Cond, TrueVal, FalseVal);
Devang Patele8e02132009-09-18 19:26:43 +00002246 InstructionList.push_back(I);
Chris Lattner01ff65f2007-05-02 05:16:49 +00002247 break;
2248 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002249
Chris Lattner01ff65f2007-05-02 05:16:49 +00002250 case bitc::FUNC_CODE_INST_EXTRACTELT: { // EXTRACTELT: [opty, opval, opval]
Chris Lattnerabfbf852007-05-06 00:21:25 +00002251 unsigned OpNum = 0;
2252 Value *Vec, *Idx;
2253 if (getValueTypePair(Record, OpNum, NextValueNo, Vec) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002254 popValue(Record, OpNum, NextValueNo, Type::getInt32Ty(Context), Idx))
Chris Lattner01ff65f2007-05-02 05:16:49 +00002255 return Error("Invalid EXTRACTELT record");
Eric Christophera3500da2009-07-25 02:28:41 +00002256 I = ExtractElementInst::Create(Vec, Idx);
Devang Patele8e02132009-09-18 19:26:43 +00002257 InstructionList.push_back(I);
Chris Lattner01ff65f2007-05-02 05:16:49 +00002258 break;
2259 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002260
Chris Lattner01ff65f2007-05-02 05:16:49 +00002261 case bitc::FUNC_CODE_INST_INSERTELT: { // INSERTELT: [ty, opval,opval,opval]
Chris Lattnerabfbf852007-05-06 00:21:25 +00002262 unsigned OpNum = 0;
2263 Value *Vec, *Elt, *Idx;
2264 if (getValueTypePair(Record, OpNum, NextValueNo, Vec) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002265 popValue(Record, OpNum, NextValueNo,
Chris Lattnerabfbf852007-05-06 00:21:25 +00002266 cast<VectorType>(Vec->getType())->getElementType(), Elt) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002267 popValue(Record, OpNum, NextValueNo, Type::getInt32Ty(Context), Idx))
Chris Lattner01ff65f2007-05-02 05:16:49 +00002268 return Error("Invalid INSERTELT record");
Gabor Greif051a9502008-04-06 20:25:17 +00002269 I = InsertElementInst::Create(Vec, Elt, Idx);
Devang Patele8e02132009-09-18 19:26:43 +00002270 InstructionList.push_back(I);
Chris Lattner01ff65f2007-05-02 05:16:49 +00002271 break;
2272 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002273
Chris Lattnerabfbf852007-05-06 00:21:25 +00002274 case bitc::FUNC_CODE_INST_SHUFFLEVEC: {// SHUFFLEVEC: [opval,ty,opval,opval]
2275 unsigned OpNum = 0;
2276 Value *Vec1, *Vec2, *Mask;
2277 if (getValueTypePair(Record, OpNum, NextValueNo, Vec1) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002278 popValue(Record, OpNum, NextValueNo, Vec1->getType(), Vec2))
Chris Lattnerabfbf852007-05-06 00:21:25 +00002279 return Error("Invalid SHUFFLEVEC record");
2280
Mon P Wangaeb06d22008-11-10 04:46:22 +00002281 if (getValueTypePair(Record, OpNum, NextValueNo, Mask))
Chris Lattner01ff65f2007-05-02 05:16:49 +00002282 return Error("Invalid SHUFFLEVEC record");
2283 I = new ShuffleVectorInst(Vec1, Vec2, Mask);
Devang Patele8e02132009-09-18 19:26:43 +00002284 InstructionList.push_back(I);
Chris Lattner01ff65f2007-05-02 05:16:49 +00002285 break;
2286 }
Mon P Wangaeb06d22008-11-10 04:46:22 +00002287
Nick Lewycky7f6aa2b2009-07-08 03:04:38 +00002288 case bitc::FUNC_CODE_INST_CMP: // CMP: [opty, opval, opval, pred]
2289 // Old form of ICmp/FCmp returning bool
2290 // Existed to differentiate between icmp/fcmp and vicmp/vfcmp which were
2291 // both legal on vectors but had different behaviour.
2292 case bitc::FUNC_CODE_INST_CMP2: { // CMP2: [opty, opval, opval, pred]
2293 // FCmp/ICmp returning bool or vector of bool
2294
Chris Lattner7337ab92007-05-06 00:00:00 +00002295 unsigned OpNum = 0;
2296 Value *LHS, *RHS;
2297 if (getValueTypePair(Record, OpNum, NextValueNo, LHS) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002298 popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) ||
Chris Lattner7337ab92007-05-06 00:00:00 +00002299 OpNum+1 != Record.size())
Chris Lattner01ff65f2007-05-02 05:16:49 +00002300 return Error("Invalid CMP record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002301
Duncan Sandsb0bc6c32010-02-15 16:12:20 +00002302 if (LHS->getType()->isFPOrFPVectorTy())
Dan Gohman1c8a23c2009-08-25 23:17:54 +00002303 I = new FCmpInst((FCmpInst::Predicate)Record[OpNum], LHS, RHS);
Nick Lewycky7f6aa2b2009-07-08 03:04:38 +00002304 else
Dan Gohman1c8a23c2009-08-25 23:17:54 +00002305 I = new ICmpInst((ICmpInst::Predicate)Record[OpNum], LHS, RHS);
Devang Patele8e02132009-09-18 19:26:43 +00002306 InstructionList.push_back(I);
Dan Gohmanf72fb672008-09-09 01:02:47 +00002307 break;
2308 }
Nick Lewycky7f6aa2b2009-07-08 03:04:38 +00002309
Chris Lattner231cbcb2007-05-02 04:27:25 +00002310 case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>]
Devang Pateld9d99ff2008-02-26 01:29:32 +00002311 {
2312 unsigned Size = Record.size();
2313 if (Size == 0) {
Owen Anderson1d0be152009-08-13 21:58:54 +00002314 I = ReturnInst::Create(Context);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002315 InstructionList.push_back(I);
Devang Pateld9d99ff2008-02-26 01:29:32 +00002316 break;
Dan Gohmanfc74abf2008-07-23 00:34:11 +00002317 }
Devang Pateld9d99ff2008-02-26 01:29:32 +00002318
Dan Gohmanfc74abf2008-07-23 00:34:11 +00002319 unsigned OpNum = 0;
Chris Lattner96a74c52011-06-17 18:09:11 +00002320 Value *Op = NULL;
2321 if (getValueTypePair(Record, OpNum, NextValueNo, Op))
2322 return Error("Invalid RET record");
2323 if (OpNum != Record.size())
2324 return Error("Invalid RET record");
Dan Gohmanfc74abf2008-07-23 00:34:11 +00002325
Chris Lattner96a74c52011-06-17 18:09:11 +00002326 I = ReturnInst::Create(Context, Op);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002327 InstructionList.push_back(I);
Dan Gohmanfc74abf2008-07-23 00:34:11 +00002328 break;
Chris Lattner231cbcb2007-05-02 04:27:25 +00002329 }
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002330 case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#]
Chris Lattnerf61e6452007-05-03 22:09:51 +00002331 if (Record.size() != 1 && Record.size() != 3)
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002332 return Error("Invalid BR record");
2333 BasicBlock *TrueDest = getBasicBlock(Record[0]);
2334 if (TrueDest == 0)
2335 return Error("Invalid BR record");
2336
Devang Patele8e02132009-09-18 19:26:43 +00002337 if (Record.size() == 1) {
Gabor Greif051a9502008-04-06 20:25:17 +00002338 I = BranchInst::Create(TrueDest);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002339 InstructionList.push_back(I);
Devang Patele8e02132009-09-18 19:26:43 +00002340 }
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002341 else {
2342 BasicBlock *FalseDest = getBasicBlock(Record[1]);
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002343 Value *Cond = getValue(Record, 2, NextValueNo,
2344 Type::getInt1Ty(Context));
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002345 if (FalseDest == 0 || Cond == 0)
2346 return Error("Invalid BR record");
Gabor Greif051a9502008-04-06 20:25:17 +00002347 I = BranchInst::Create(TrueDest, FalseDest, Cond);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002348 InstructionList.push_back(I);
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002349 }
2350 break;
2351 }
Chris Lattnerf9be95f2009-10-27 19:13:16 +00002352 case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...]
Michael Ilseman407a6162012-11-15 22:34:00 +00002353 // Check magic
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002354 if ((Record[0] >> 16) == SWITCH_INST_MAGIC) {
2355 // New SwitchInst format with case ranges.
Michael Ilseman407a6162012-11-15 22:34:00 +00002356
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002357 Type *OpTy = getTypeByID(Record[1]);
2358 unsigned ValueBitWidth = cast<IntegerType>(OpTy)->getBitWidth();
2359
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002360 Value *Cond = getValue(Record, 2, NextValueNo, OpTy);
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002361 BasicBlock *Default = getBasicBlock(Record[3]);
2362 if (OpTy == 0 || Cond == 0 || Default == 0)
2363 return Error("Invalid SWITCH record");
2364
2365 unsigned NumCases = Record[4];
Michael Ilseman407a6162012-11-15 22:34:00 +00002366
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002367 SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases);
2368 InstructionList.push_back(SI);
Michael Ilseman407a6162012-11-15 22:34:00 +00002369
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002370 unsigned CurIdx = 5;
2371 for (unsigned i = 0; i != NumCases; ++i) {
Stepan Dyatkovskiy0aa32d52012-05-29 12:26:47 +00002372 IntegersSubsetToBB CaseBuilder;
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002373 unsigned NumItems = Record[CurIdx++];
2374 for (unsigned ci = 0; ci != NumItems; ++ci) {
2375 bool isSingleNumber = Record[CurIdx++];
Michael Ilseman407a6162012-11-15 22:34:00 +00002376
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002377 APInt Low;
2378 unsigned ActiveWords = 1;
2379 if (ValueBitWidth > 64)
2380 ActiveWords = Record[CurIdx++];
Benjamin Kramerf52aea82012-05-28 14:10:31 +00002381 Low = ReadWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords),
2382 ValueBitWidth);
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002383 CurIdx += ActiveWords;
Stepan Dyatkovskiy484fc932012-05-28 12:39:09 +00002384
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002385 if (!isSingleNumber) {
2386 ActiveWords = 1;
2387 if (ValueBitWidth > 64)
2388 ActiveWords = Record[CurIdx++];
2389 APInt High =
Benjamin Kramerf52aea82012-05-28 14:10:31 +00002390 ReadWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords),
2391 ValueBitWidth);
Michael Ilseman407a6162012-11-15 22:34:00 +00002392
Stepan Dyatkovskiy484fc932012-05-28 12:39:09 +00002393 CaseBuilder.add(IntItem::fromType(OpTy, Low),
2394 IntItem::fromType(OpTy, High));
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002395 CurIdx += ActiveWords;
2396 } else
Stepan Dyatkovskiy484fc932012-05-28 12:39:09 +00002397 CaseBuilder.add(IntItem::fromType(OpTy, Low));
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002398 }
2399 BasicBlock *DestBB = getBasicBlock(Record[CurIdx++]);
Michael Ilseman407a6162012-11-15 22:34:00 +00002400 IntegersSubset Case = CaseBuilder.getCase();
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002401 SI->addCase(Case, DestBB);
2402 }
Stepan Dyatkovskiy734dde82012-05-14 08:26:31 +00002403 uint16_t Hash = SI->hash();
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002404 if (Hash != (Record[0] & 0xFFFF))
2405 return Error("Invalid SWITCH record");
2406 I = SI;
2407 break;
2408 }
Michael Ilseman407a6162012-11-15 22:34:00 +00002409
Stepan Dyatkovskiy1cce5bf2012-05-12 10:48:17 +00002410 // Old SwitchInst format without case ranges.
Michael Ilseman407a6162012-11-15 22:34:00 +00002411
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002412 if (Record.size() < 3 || (Record.size() & 1) == 0)
2413 return Error("Invalid SWITCH record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002414 Type *OpTy = getTypeByID(Record[0]);
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002415 Value *Cond = getValue(Record, 1, NextValueNo, OpTy);
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002416 BasicBlock *Default = getBasicBlock(Record[2]);
2417 if (OpTy == 0 || Cond == 0 || Default == 0)
2418 return Error("Invalid SWITCH record");
2419 unsigned NumCases = (Record.size()-3)/2;
Gabor Greif051a9502008-04-06 20:25:17 +00002420 SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases);
Devang Patele8e02132009-09-18 19:26:43 +00002421 InstructionList.push_back(SI);
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002422 for (unsigned i = 0, e = NumCases; i != e; ++i) {
Daniel Dunbara279bc32009-09-20 02:20:51 +00002423 ConstantInt *CaseVal =
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002424 dyn_cast_or_null<ConstantInt>(getFnValueByID(Record[3+i*2], OpTy));
2425 BasicBlock *DestBB = getBasicBlock(Record[1+3+i*2]);
2426 if (CaseVal == 0 || DestBB == 0) {
2427 delete SI;
2428 return Error("Invalid SWITCH record!");
2429 }
2430 SI->addCase(CaseVal, DestBB);
2431 }
2432 I = SI;
2433 break;
2434 }
Chris Lattnerab21db72009-10-28 00:19:10 +00002435 case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...]
Chris Lattnerf9be95f2009-10-27 19:13:16 +00002436 if (Record.size() < 2)
Chris Lattnerab21db72009-10-28 00:19:10 +00002437 return Error("Invalid INDIRECTBR record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002438 Type *OpTy = getTypeByID(Record[0]);
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002439 Value *Address = getValue(Record, 1, NextValueNo, OpTy);
Chris Lattnerf9be95f2009-10-27 19:13:16 +00002440 if (OpTy == 0 || Address == 0)
Chris Lattnerab21db72009-10-28 00:19:10 +00002441 return Error("Invalid INDIRECTBR record");
Chris Lattnerf9be95f2009-10-27 19:13:16 +00002442 unsigned NumDests = Record.size()-2;
Chris Lattnerab21db72009-10-28 00:19:10 +00002443 IndirectBrInst *IBI = IndirectBrInst::Create(Address, NumDests);
Chris Lattnerf9be95f2009-10-27 19:13:16 +00002444 InstructionList.push_back(IBI);
2445 for (unsigned i = 0, e = NumDests; i != e; ++i) {
2446 if (BasicBlock *DestBB = getBasicBlock(Record[2+i])) {
2447 IBI->addDestination(DestBB);
2448 } else {
2449 delete IBI;
Chris Lattnerab21db72009-10-28 00:19:10 +00002450 return Error("Invalid INDIRECTBR record!");
Chris Lattnerf9be95f2009-10-27 19:13:16 +00002451 }
2452 }
2453 I = IBI;
2454 break;
2455 }
Michael Ilseman407a6162012-11-15 22:34:00 +00002456
Duncan Sandsdc024672007-11-27 13:23:08 +00002457 case bitc::FUNC_CODE_INST_INVOKE: {
2458 // INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...]
Chris Lattnera9bb7132007-05-08 05:38:01 +00002459 if (Record.size() < 4) return Error("Invalid INVOKE record");
Bill Wendling99faa3b2012-12-07 23:16:57 +00002460 AttributeSet PAL = getAttributes(Record[0]);
Chris Lattnera9bb7132007-05-08 05:38:01 +00002461 unsigned CCInfo = Record[1];
2462 BasicBlock *NormalBB = getBasicBlock(Record[2]);
2463 BasicBlock *UnwindBB = getBasicBlock(Record[3]);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002464
Chris Lattnera9bb7132007-05-08 05:38:01 +00002465 unsigned OpNum = 4;
Chris Lattner7337ab92007-05-06 00:00:00 +00002466 Value *Callee;
2467 if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002468 return Error("Invalid INVOKE record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002469
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002470 PointerType *CalleeTy = dyn_cast<PointerType>(Callee->getType());
2471 FunctionType *FTy = !CalleeTy ? 0 :
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002472 dyn_cast<FunctionType>(CalleeTy->getElementType());
2473
2474 // Check that the right number of fixed parameters are here.
Chris Lattner7337ab92007-05-06 00:00:00 +00002475 if (FTy == 0 || NormalBB == 0 || UnwindBB == 0 ||
2476 Record.size() < OpNum+FTy->getNumParams())
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002477 return Error("Invalid INVOKE record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002478
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002479 SmallVector<Value*, 16> Ops;
Chris Lattner7337ab92007-05-06 00:00:00 +00002480 for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002481 Ops.push_back(getValue(Record, OpNum, NextValueNo,
2482 FTy->getParamType(i)));
Chris Lattner7337ab92007-05-06 00:00:00 +00002483 if (Ops.back() == 0) return Error("Invalid INVOKE record");
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002484 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002485
Chris Lattner7337ab92007-05-06 00:00:00 +00002486 if (!FTy->isVarArg()) {
2487 if (Record.size() != OpNum)
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002488 return Error("Invalid INVOKE record");
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002489 } else {
Chris Lattner7337ab92007-05-06 00:00:00 +00002490 // Read type/value pairs for varargs params.
2491 while (OpNum != Record.size()) {
2492 Value *Op;
2493 if (getValueTypePair(Record, OpNum, NextValueNo, Op))
2494 return Error("Invalid INVOKE record");
2495 Ops.push_back(Op);
2496 }
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002497 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002498
Jay Foada3efbb12011-07-15 08:37:34 +00002499 I = InvokeInst::Create(Callee, NormalBB, UnwindBB, Ops);
Devang Patele8e02132009-09-18 19:26:43 +00002500 InstructionList.push_back(I);
Sandeep Patel65c3c8f2009-09-02 08:44:58 +00002501 cast<InvokeInst>(I)->setCallingConv(
2502 static_cast<CallingConv::ID>(CCInfo));
Devang Patel05988662008-09-25 21:00:45 +00002503 cast<InvokeInst>(I)->setAttributes(PAL);
Chris Lattnerf4c8e522007-05-02 05:46:45 +00002504 break;
2505 }
Bill Wendlingdccc03b2011-07-31 06:30:59 +00002506 case bitc::FUNC_CODE_INST_RESUME: { // RESUME: [opval]
2507 unsigned Idx = 0;
2508 Value *Val = 0;
2509 if (getValueTypePair(Record, Idx, NextValueNo, Val))
2510 return Error("Invalid RESUME record");
2511 I = ResumeInst::Create(Val);
Bill Wendling35726bf2011-09-01 00:50:20 +00002512 InstructionList.push_back(I);
Bill Wendlingdccc03b2011-07-31 06:30:59 +00002513 break;
2514 }
Chris Lattner231cbcb2007-05-02 04:27:25 +00002515 case bitc::FUNC_CODE_INST_UNREACHABLE: // UNREACHABLE
Owen Anderson1d0be152009-08-13 21:58:54 +00002516 I = new UnreachableInst(Context);
Devang Patele8e02132009-09-18 19:26:43 +00002517 InstructionList.push_back(I);
Chris Lattner231cbcb2007-05-02 04:27:25 +00002518 break;
Chris Lattnerabfbf852007-05-06 00:21:25 +00002519 case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...]
Chris Lattner15e6d172007-05-04 19:11:41 +00002520 if (Record.size() < 1 || ((Record.size()-1)&1))
Chris Lattner2a98cca2007-05-03 18:58:09 +00002521 return Error("Invalid PHI record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002522 Type *Ty = getTypeByID(Record[0]);
Chris Lattner2a98cca2007-05-03 18:58:09 +00002523 if (!Ty) return Error("Invalid PHI record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002524
Jay Foad3ecfc862011-03-30 11:28:46 +00002525 PHINode *PN = PHINode::Create(Ty, (Record.size()-1)/2);
Devang Patele8e02132009-09-18 19:26:43 +00002526 InstructionList.push_back(PN);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002527
Chris Lattner15e6d172007-05-04 19:11:41 +00002528 for (unsigned i = 0, e = Record.size()-1; i != e; i += 2) {
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002529 Value *V;
2530 // With the new function encoding, it is possible that operands have
2531 // negative IDs (for forward references). Use a signed VBR
2532 // representation to keep the encoding small.
2533 if (UseRelativeIDs)
2534 V = getValueSigned(Record, 1+i, NextValueNo, Ty);
2535 else
2536 V = getValue(Record, 1+i, NextValueNo, Ty);
Chris Lattner15e6d172007-05-04 19:11:41 +00002537 BasicBlock *BB = getBasicBlock(Record[2+i]);
Chris Lattner2a98cca2007-05-03 18:58:09 +00002538 if (!V || !BB) return Error("Invalid PHI record");
2539 PN->addIncoming(V, BB);
2540 }
2541 I = PN;
2542 break;
2543 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002544
Bill Wendlinge6e88262011-08-12 20:24:12 +00002545 case bitc::FUNC_CODE_INST_LANDINGPAD: {
2546 // LANDINGPAD: [ty, val, val, num, (id0,val0 ...)?]
2547 unsigned Idx = 0;
2548 if (Record.size() < 4)
2549 return Error("Invalid LANDINGPAD record");
2550 Type *Ty = getTypeByID(Record[Idx++]);
2551 if (!Ty) return Error("Invalid LANDINGPAD record");
2552 Value *PersFn = 0;
2553 if (getValueTypePair(Record, Idx, NextValueNo, PersFn))
2554 return Error("Invalid LANDINGPAD record");
2555
2556 bool IsCleanup = !!Record[Idx++];
2557 unsigned NumClauses = Record[Idx++];
2558 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, NumClauses);
2559 LP->setCleanup(IsCleanup);
2560 for (unsigned J = 0; J != NumClauses; ++J) {
2561 LandingPadInst::ClauseType CT =
2562 LandingPadInst::ClauseType(Record[Idx++]); (void)CT;
2563 Value *Val;
2564
2565 if (getValueTypePair(Record, Idx, NextValueNo, Val)) {
2566 delete LP;
2567 return Error("Invalid LANDINGPAD record");
2568 }
2569
2570 assert((CT != LandingPadInst::Catch ||
2571 !isa<ArrayType>(Val->getType())) &&
2572 "Catch clause has a invalid type!");
2573 assert((CT != LandingPadInst::Filter ||
2574 isa<ArrayType>(Val->getType())) &&
2575 "Filter clause has invalid type!");
2576 LP->addClause(Val);
2577 }
2578
2579 I = LP;
Bill Wendling35726bf2011-09-01 00:50:20 +00002580 InstructionList.push_back(I);
Bill Wendlinge6e88262011-08-12 20:24:12 +00002581 break;
2582 }
2583
Chris Lattner96a74c52011-06-17 18:09:11 +00002584 case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align]
2585 if (Record.size() != 4)
2586 return Error("Invalid ALLOCA record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002587 PointerType *Ty =
Chris Lattner2a98cca2007-05-03 18:58:09 +00002588 dyn_cast_or_null<PointerType>(getTypeByID(Record[0]));
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002589 Type *OpTy = getTypeByID(Record[1]);
Chris Lattner96a74c52011-06-17 18:09:11 +00002590 Value *Size = getFnValueByID(Record[2], OpTy);
2591 unsigned Align = Record[3];
Chris Lattner2a98cca2007-05-03 18:58:09 +00002592 if (!Ty || !Size) return Error("Invalid ALLOCA record");
Owen Anderson50dead02009-07-15 23:53:25 +00002593 I = new AllocaInst(Ty->getElementType(), Size, (1 << Align) >> 1);
Devang Patele8e02132009-09-18 19:26:43 +00002594 InstructionList.push_back(I);
Chris Lattner2a98cca2007-05-03 18:58:09 +00002595 break;
2596 }
Chris Lattner0579f7f2007-05-03 22:04:19 +00002597 case bitc::FUNC_CODE_INST_LOAD: { // LOAD: [opty, op, align, vol]
Chris Lattner7337ab92007-05-06 00:00:00 +00002598 unsigned OpNum = 0;
2599 Value *Op;
2600 if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
2601 OpNum+2 != Record.size())
Chris Lattnerabfbf852007-05-06 00:21:25 +00002602 return Error("Invalid LOAD record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002603
Chris Lattner7337ab92007-05-06 00:00:00 +00002604 I = new LoadInst(Op, "", Record[OpNum+1], (1 << Record[OpNum]) >> 1);
Devang Patele8e02132009-09-18 19:26:43 +00002605 InstructionList.push_back(I);
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002606 break;
Chris Lattner0579f7f2007-05-03 22:04:19 +00002607 }
Eli Friedman21006d42011-08-09 23:02:53 +00002608 case bitc::FUNC_CODE_INST_LOADATOMIC: {
2609 // LOADATOMIC: [opty, op, align, vol, ordering, synchscope]
2610 unsigned OpNum = 0;
2611 Value *Op;
2612 if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
2613 OpNum+4 != Record.size())
2614 return Error("Invalid LOADATOMIC record");
Michael Ilseman407a6162012-11-15 22:34:00 +00002615
Eli Friedman21006d42011-08-09 23:02:53 +00002616
2617 AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
2618 if (Ordering == NotAtomic || Ordering == Release ||
2619 Ordering == AcquireRelease)
2620 return Error("Invalid LOADATOMIC record");
2621 if (Ordering != NotAtomic && Record[OpNum] == 0)
2622 return Error("Invalid LOADATOMIC record");
2623 SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
2624
2625 I = new LoadInst(Op, "", Record[OpNum+1], (1 << Record[OpNum]) >> 1,
2626 Ordering, SynchScope);
2627 InstructionList.push_back(I);
2628 break;
2629 }
Chris Lattner4f6bab92011-06-17 18:17:37 +00002630 case bitc::FUNC_CODE_INST_STORE: { // STORE2:[ptrty, ptr, val, align, vol]
Christopher Lambfe63fb92007-12-11 08:59:05 +00002631 unsigned OpNum = 0;
2632 Value *Val, *Ptr;
2633 if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002634 popValue(Record, OpNum, NextValueNo,
Christopher Lambfe63fb92007-12-11 08:59:05 +00002635 cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
2636 OpNum+2 != Record.size())
2637 return Error("Invalid STORE record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002638
Christopher Lambfe63fb92007-12-11 08:59:05 +00002639 I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1);
Devang Patele8e02132009-09-18 19:26:43 +00002640 InstructionList.push_back(I);
Christopher Lambfe63fb92007-12-11 08:59:05 +00002641 break;
2642 }
Eli Friedman21006d42011-08-09 23:02:53 +00002643 case bitc::FUNC_CODE_INST_STOREATOMIC: {
2644 // STOREATOMIC: [ptrty, ptr, val, align, vol, ordering, synchscope]
2645 unsigned OpNum = 0;
2646 Value *Val, *Ptr;
2647 if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002648 popValue(Record, OpNum, NextValueNo,
Eli Friedman21006d42011-08-09 23:02:53 +00002649 cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
2650 OpNum+4 != Record.size())
2651 return Error("Invalid STOREATOMIC record");
2652
2653 AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
Eli Friedmanc3d35982011-09-19 19:41:28 +00002654 if (Ordering == NotAtomic || Ordering == Acquire ||
Eli Friedman21006d42011-08-09 23:02:53 +00002655 Ordering == AcquireRelease)
2656 return Error("Invalid STOREATOMIC record");
2657 SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
2658 if (Ordering != NotAtomic && Record[OpNum] == 0)
2659 return Error("Invalid STOREATOMIC record");
2660
2661 I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1,
2662 Ordering, SynchScope);
2663 InstructionList.push_back(I);
2664 break;
2665 }
Eli Friedmanff030482011-07-28 21:48:00 +00002666 case bitc::FUNC_CODE_INST_CMPXCHG: {
2667 // CMPXCHG:[ptrty, ptr, cmp, new, vol, ordering, synchscope]
2668 unsigned OpNum = 0;
2669 Value *Ptr, *Cmp, *New;
2670 if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002671 popValue(Record, OpNum, NextValueNo,
Eli Friedmanff030482011-07-28 21:48:00 +00002672 cast<PointerType>(Ptr->getType())->getElementType(), Cmp) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002673 popValue(Record, OpNum, NextValueNo,
Eli Friedmanff030482011-07-28 21:48:00 +00002674 cast<PointerType>(Ptr->getType())->getElementType(), New) ||
2675 OpNum+3 != Record.size())
2676 return Error("Invalid CMPXCHG record");
2677 AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+1]);
Eli Friedman21006d42011-08-09 23:02:53 +00002678 if (Ordering == NotAtomic || Ordering == Unordered)
Eli Friedmanff030482011-07-28 21:48:00 +00002679 return Error("Invalid CMPXCHG record");
2680 SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+2]);
2681 I = new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, SynchScope);
2682 cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]);
2683 InstructionList.push_back(I);
2684 break;
2685 }
2686 case bitc::FUNC_CODE_INST_ATOMICRMW: {
2687 // ATOMICRMW:[ptrty, ptr, val, op, vol, ordering, synchscope]
2688 unsigned OpNum = 0;
2689 Value *Ptr, *Val;
2690 if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002691 popValue(Record, OpNum, NextValueNo,
Eli Friedmanff030482011-07-28 21:48:00 +00002692 cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
2693 OpNum+4 != Record.size())
2694 return Error("Invalid ATOMICRMW record");
2695 AtomicRMWInst::BinOp Operation = GetDecodedRMWOperation(Record[OpNum]);
2696 if (Operation < AtomicRMWInst::FIRST_BINOP ||
2697 Operation > AtomicRMWInst::LAST_BINOP)
2698 return Error("Invalid ATOMICRMW record");
2699 AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
Eli Friedman21006d42011-08-09 23:02:53 +00002700 if (Ordering == NotAtomic || Ordering == Unordered)
Eli Friedmanff030482011-07-28 21:48:00 +00002701 return Error("Invalid ATOMICRMW record");
2702 SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
2703 I = new AtomicRMWInst(Operation, Ptr, Val, Ordering, SynchScope);
2704 cast<AtomicRMWInst>(I)->setVolatile(Record[OpNum+1]);
2705 InstructionList.push_back(I);
2706 break;
2707 }
Eli Friedman47f35132011-07-25 23:16:38 +00002708 case bitc::FUNC_CODE_INST_FENCE: { // FENCE:[ordering, synchscope]
2709 if (2 != Record.size())
2710 return Error("Invalid FENCE record");
2711 AtomicOrdering Ordering = GetDecodedOrdering(Record[0]);
2712 if (Ordering == NotAtomic || Ordering == Unordered ||
2713 Ordering == Monotonic)
2714 return Error("Invalid FENCE record");
2715 SynchronizationScope SynchScope = GetDecodedSynchScope(Record[1]);
2716 I = new FenceInst(Context, Ordering, SynchScope);
2717 InstructionList.push_back(I);
2718 break;
2719 }
Chris Lattner4f6bab92011-06-17 18:17:37 +00002720 case bitc::FUNC_CODE_INST_CALL: {
Duncan Sandsdc024672007-11-27 13:23:08 +00002721 // CALL: [paramattrs, cc, fnty, fnid, arg0, arg1...]
2722 if (Record.size() < 3)
Chris Lattner0579f7f2007-05-03 22:04:19 +00002723 return Error("Invalid CALL record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002724
Bill Wendling99faa3b2012-12-07 23:16:57 +00002725 AttributeSet PAL = getAttributes(Record[0]);
Chris Lattnera9bb7132007-05-08 05:38:01 +00002726 unsigned CCInfo = Record[1];
Daniel Dunbara279bc32009-09-20 02:20:51 +00002727
Chris Lattnera9bb7132007-05-08 05:38:01 +00002728 unsigned OpNum = 2;
Chris Lattner7337ab92007-05-06 00:00:00 +00002729 Value *Callee;
2730 if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
2731 return Error("Invalid CALL record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002732
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002733 PointerType *OpTy = dyn_cast<PointerType>(Callee->getType());
2734 FunctionType *FTy = 0;
Chris Lattner0579f7f2007-05-03 22:04:19 +00002735 if (OpTy) FTy = dyn_cast<FunctionType>(OpTy->getElementType());
Chris Lattner7337ab92007-05-06 00:00:00 +00002736 if (!FTy || Record.size() < FTy->getNumParams()+OpNum)
Chris Lattner0579f7f2007-05-03 22:04:19 +00002737 return Error("Invalid CALL record");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002738
Chris Lattner0579f7f2007-05-03 22:04:19 +00002739 SmallVector<Value*, 16> Args;
2740 // Read the fixed params.
Chris Lattner7337ab92007-05-06 00:00:00 +00002741 for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
Chris Lattner1afcace2011-07-09 17:41:24 +00002742 if (FTy->getParamType(i)->isLabelTy())
Dale Johanneseneb57ea72007-11-05 21:20:28 +00002743 Args.push_back(getBasicBlock(Record[OpNum]));
Dan Gohman9b10dfb2010-09-13 18:00:48 +00002744 else
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002745 Args.push_back(getValue(Record, OpNum, NextValueNo,
2746 FTy->getParamType(i)));
Chris Lattner0579f7f2007-05-03 22:04:19 +00002747 if (Args.back() == 0) return Error("Invalid CALL record");
2748 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002749
Chris Lattner0579f7f2007-05-03 22:04:19 +00002750 // Read type/value pairs for varargs params.
Chris Lattner0579f7f2007-05-03 22:04:19 +00002751 if (!FTy->isVarArg()) {
Chris Lattner7337ab92007-05-06 00:00:00 +00002752 if (OpNum != Record.size())
Chris Lattner0579f7f2007-05-03 22:04:19 +00002753 return Error("Invalid CALL record");
2754 } else {
Chris Lattner7337ab92007-05-06 00:00:00 +00002755 while (OpNum != Record.size()) {
2756 Value *Op;
2757 if (getValueTypePair(Record, OpNum, NextValueNo, Op))
2758 return Error("Invalid CALL record");
2759 Args.push_back(Op);
Chris Lattner0579f7f2007-05-03 22:04:19 +00002760 }
2761 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002762
Jay Foada3efbb12011-07-15 08:37:34 +00002763 I = CallInst::Create(Callee, Args);
Devang Patele8e02132009-09-18 19:26:43 +00002764 InstructionList.push_back(I);
Sandeep Patel65c3c8f2009-09-02 08:44:58 +00002765 cast<CallInst>(I)->setCallingConv(
2766 static_cast<CallingConv::ID>(CCInfo>>1));
Chris Lattner76520192007-05-03 22:34:03 +00002767 cast<CallInst>(I)->setTailCall(CCInfo & 1);
Devang Patel05988662008-09-25 21:00:45 +00002768 cast<CallInst>(I)->setAttributes(PAL);
Chris Lattner0579f7f2007-05-03 22:04:19 +00002769 break;
2770 }
2771 case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty]
2772 if (Record.size() < 3)
2773 return Error("Invalid VAARG record");
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002774 Type *OpTy = getTypeByID(Record[0]);
Jan Wen Voungd9a3bad2012-10-11 20:20:40 +00002775 Value *Op = getValue(Record, 1, NextValueNo, OpTy);
Chris Lattnerdb125cf2011-07-18 04:54:35 +00002776 Type *ResTy = getTypeByID(Record[2]);
Chris Lattner0579f7f2007-05-03 22:04:19 +00002777 if (!OpTy || !Op || !ResTy)
2778 return Error("Invalid VAARG record");
2779 I = new VAArgInst(Op, ResTy);
Devang Patele8e02132009-09-18 19:26:43 +00002780 InstructionList.push_back(I);
Chris Lattner0579f7f2007-05-03 22:04:19 +00002781 break;
2782 }
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002783 }
2784
2785 // Add instruction to end of current BB. If there is no current BB, reject
2786 // this file.
2787 if (CurBB == 0) {
2788 delete I;
2789 return Error("Invalid instruction with no BB");
2790 }
2791 CurBB->getInstList().push_back(I);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002792
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002793 // If this was a terminator instruction, move to the next block.
2794 if (isa<TerminatorInst>(I)) {
2795 ++CurBBNo;
2796 CurBB = CurBBNo < FunctionBBs.size() ? FunctionBBs[CurBBNo] : 0;
2797 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002798
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002799 // Non-void values get registered in the value table for future use.
Benjamin Kramerf0127052010-01-05 13:12:22 +00002800 if (I && !I->getType()->isVoidTy())
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002801 ValueList.AssignValue(I, NextValueNo++);
Chris Lattner980e5aa2007-05-01 05:52:21 +00002802 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002803
Chris Lattner5a4251c2013-01-20 02:13:19 +00002804OutOfRecordLoop:
Joe Abbeyacb61942013-02-06 22:14:06 +00002805
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002806 // Check the function list for unresolved values.
2807 if (Argument *A = dyn_cast<Argument>(ValueList.back())) {
2808 if (A->getParent() == 0) {
2809 // We found at least one unresolved value. Nuke them all to avoid leaks.
2810 for (unsigned i = ModuleValueListSize, e = ValueList.size(); i != e; ++i){
Dan Gohman56e2a572010-08-25 20:20:21 +00002811 if ((A = dyn_cast<Argument>(ValueList[i])) && A->getParent() == 0) {
Owen Anderson9e9a0d52009-07-30 23:03:37 +00002812 A->replaceAllUsesWith(UndefValue::get(A->getType()));
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002813 delete A;
2814 }
2815 }
Chris Lattner35a04702007-05-04 03:50:29 +00002816 return Error("Never resolved value found in function!");
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002817 }
Chris Lattnera7c49aa2007-05-01 07:01:57 +00002818 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002819
Dan Gohman064ff3e2010-08-25 20:23:38 +00002820 // FIXME: Check for unresolved forward-declared metadata references
2821 // and clean up leaks.
2822
Chris Lattner50b136d2009-10-28 05:53:48 +00002823 // See if anything took the address of blocks in this function. If so,
2824 // resolve them now.
Chris Lattner50b136d2009-10-28 05:53:48 +00002825 DenseMap<Function*, std::vector<BlockAddrRefTy> >::iterator BAFRI =
2826 BlockAddrFwdRefs.find(F);
2827 if (BAFRI != BlockAddrFwdRefs.end()) {
2828 std::vector<BlockAddrRefTy> &RefList = BAFRI->second;
2829 for (unsigned i = 0, e = RefList.size(); i != e; ++i) {
2830 unsigned BlockIdx = RefList[i].first;
Chris Lattnercdfc9402009-11-01 01:27:45 +00002831 if (BlockIdx >= FunctionBBs.size())
Chris Lattner50b136d2009-10-28 05:53:48 +00002832 return Error("Invalid blockaddress block #");
Michael Ilseman407a6162012-11-15 22:34:00 +00002833
Chris Lattner50b136d2009-10-28 05:53:48 +00002834 GlobalVariable *FwdRef = RefList[i].second;
Chris Lattnercdfc9402009-11-01 01:27:45 +00002835 FwdRef->replaceAllUsesWith(BlockAddress::get(F, FunctionBBs[BlockIdx]));
Chris Lattner50b136d2009-10-28 05:53:48 +00002836 FwdRef->eraseFromParent();
2837 }
Michael Ilseman407a6162012-11-15 22:34:00 +00002838
Chris Lattner50b136d2009-10-28 05:53:48 +00002839 BlockAddrFwdRefs.erase(BAFRI);
2840 }
Michael Ilseman407a6162012-11-15 22:34:00 +00002841
Chris Lattner980e5aa2007-05-01 05:52:21 +00002842 // Trim the value list down to the size it was before we parsed this function.
2843 ValueList.shrinkTo(ModuleValueListSize);
Dan Gohman69813832010-08-25 20:22:53 +00002844 MDValueList.shrinkTo(ModuleMDValueListSize);
Chris Lattner980e5aa2007-05-01 05:52:21 +00002845 std::vector<BasicBlock*>().swap(FunctionBBs);
Chris Lattner48f84872007-05-01 04:59:48 +00002846 return false;
2847}
2848
Derek Schuff2ea93872012-02-06 22:30:29 +00002849/// FindFunctionInStream - Find the function body in the bitcode stream
2850bool BitcodeReader::FindFunctionInStream(Function *F,
2851 DenseMap<Function*, uint64_t>::iterator DeferredFunctionInfoIterator) {
2852 while (DeferredFunctionInfoIterator->second == 0) {
2853 if (Stream.AtEndOfStream())
2854 return Error("Could not find Function in stream");
2855 // ParseModule will parse the next body in the stream and set its
2856 // position in the DeferredFunctionInfo map.
2857 if (ParseModule(true)) return true;
2858 }
2859 return false;
2860}
2861
Chris Lattnerb348bb82007-05-18 04:02:46 +00002862//===----------------------------------------------------------------------===//
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002863// GVMaterializer implementation
Chris Lattnerb348bb82007-05-18 04:02:46 +00002864//===----------------------------------------------------------------------===//
2865
2866
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002867bool BitcodeReader::isMaterializable(const GlobalValue *GV) const {
2868 if (const Function *F = dyn_cast<Function>(GV)) {
2869 return F->isDeclaration() &&
2870 DeferredFunctionInfo.count(const_cast<Function*>(F));
2871 }
2872 return false;
2873}
Daniel Dunbara279bc32009-09-20 02:20:51 +00002874
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002875bool BitcodeReader::Materialize(GlobalValue *GV, std::string *ErrInfo) {
2876 Function *F = dyn_cast<Function>(GV);
2877 // If it's not a function or is already material, ignore the request.
2878 if (!F || !F->isMaterializable()) return false;
2879
2880 DenseMap<Function*, uint64_t>::iterator DFII = DeferredFunctionInfo.find(F);
Chris Lattnerb348bb82007-05-18 04:02:46 +00002881 assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!");
Derek Schuff2ea93872012-02-06 22:30:29 +00002882 // If its position is recorded as 0, its body is somewhere in the stream
2883 // but we haven't seen it yet.
2884 if (DFII->second == 0)
2885 if (LazyStreamer && FindFunctionInStream(F, DFII)) return true;
Daniel Dunbara279bc32009-09-20 02:20:51 +00002886
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002887 // Move the bit stream to the saved position of the deferred function body.
2888 Stream.JumpToBit(DFII->second);
Daniel Dunbara279bc32009-09-20 02:20:51 +00002889
Chris Lattnerb348bb82007-05-18 04:02:46 +00002890 if (ParseFunctionBody(F)) {
2891 if (ErrInfo) *ErrInfo = ErrorString;
2892 return true;
2893 }
Chandler Carruth69940402007-08-04 01:51:18 +00002894
2895 // Upgrade any old intrinsic calls in the function.
2896 for (UpgradedIntrinsicMap::iterator I = UpgradedIntrinsics.begin(),
2897 E = UpgradedIntrinsics.end(); I != E; ++I) {
2898 if (I->first != I->second) {
2899 for (Value::use_iterator UI = I->first->use_begin(),
2900 UE = I->first->use_end(); UI != UE; ) {
2901 if (CallInst* CI = dyn_cast<CallInst>(*UI++))
2902 UpgradeIntrinsicCall(CI, I->second);
2903 }
2904 }
2905 }
Daniel Dunbara279bc32009-09-20 02:20:51 +00002906
Chris Lattnerb348bb82007-05-18 04:02:46 +00002907 return false;
2908}
2909
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002910bool BitcodeReader::isDematerializable(const GlobalValue *GV) const {
2911 const Function *F = dyn_cast<Function>(GV);
2912 if (!F || F->isDeclaration())
2913 return false;
2914 return DeferredFunctionInfo.count(const_cast<Function*>(F));
2915}
2916
2917void BitcodeReader::Dematerialize(GlobalValue *GV) {
2918 Function *F = dyn_cast<Function>(GV);
2919 // If this function isn't dematerializable, this is a noop.
2920 if (!F || !isDematerializable(F))
Chris Lattnerb348bb82007-05-18 04:02:46 +00002921 return;
Daniel Dunbara279bc32009-09-20 02:20:51 +00002922
Chris Lattnerb348bb82007-05-18 04:02:46 +00002923 assert(DeferredFunctionInfo.count(F) && "No info to read function later?");
Daniel Dunbara279bc32009-09-20 02:20:51 +00002924
Chris Lattnerb348bb82007-05-18 04:02:46 +00002925 // Just forget the function body, we can remat it later.
2926 F->deleteBody();
Chris Lattnerb348bb82007-05-18 04:02:46 +00002927}
2928
2929
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002930bool BitcodeReader::MaterializeModule(Module *M, std::string *ErrInfo) {
2931 assert(M == TheModule &&
2932 "Can only Materialize the Module this BitcodeReader is attached to.");
Chris Lattner714fa952009-06-16 05:15:21 +00002933 // Iterate over the module, deserializing any functions that are still on
2934 // disk.
2935 for (Module::iterator F = TheModule->begin(), E = TheModule->end();
2936 F != E; ++F)
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002937 if (F->isMaterializable() &&
2938 Materialize(F, ErrInfo))
2939 return true;
Chandler Carruth69940402007-08-04 01:51:18 +00002940
Derek Schuff0ffe6982012-02-29 00:07:09 +00002941 // At this point, if there are any function bodies, the current bit is
2942 // pointing to the END_BLOCK record after them. Now make sure the rest
2943 // of the bits in the module have been read.
2944 if (NextUnreadBit)
2945 ParseModule(true);
2946
Daniel Dunbara279bc32009-09-20 02:20:51 +00002947 // Upgrade any intrinsic calls that slipped through (should not happen!) and
2948 // delete the old functions to clean up. We can't do this unless the entire
2949 // module is materialized because there could always be another function body
Chandler Carruth69940402007-08-04 01:51:18 +00002950 // with calls to the old function.
2951 for (std::vector<std::pair<Function*, Function*> >::iterator I =
2952 UpgradedIntrinsics.begin(), E = UpgradedIntrinsics.end(); I != E; ++I) {
2953 if (I->first != I->second) {
2954 for (Value::use_iterator UI = I->first->use_begin(),
2955 UE = I->first->use_end(); UI != UE; ) {
2956 if (CallInst* CI = dyn_cast<CallInst>(*UI++))
2957 UpgradeIntrinsicCall(CI, I->second);
2958 }
Chris Lattner7d9eb582009-04-01 01:43:03 +00002959 if (!I->first->use_empty())
2960 I->first->replaceAllUsesWith(I->second);
Chandler Carruth69940402007-08-04 01:51:18 +00002961 I->first->eraseFromParent();
2962 }
2963 }
2964 std::vector<std::pair<Function*, Function*> >().swap(UpgradedIntrinsics);
Devang Patele4b27562009-08-28 23:24:31 +00002965
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00002966 return false;
Chris Lattnerb348bb82007-05-18 04:02:46 +00002967}
2968
Derek Schuff2ea93872012-02-06 22:30:29 +00002969bool BitcodeReader::InitStream() {
2970 if (LazyStreamer) return InitLazyStream();
2971 return InitStreamFromBuffer();
2972}
2973
2974bool BitcodeReader::InitStreamFromBuffer() {
Roman Divacky5177b3a2012-09-06 15:42:13 +00002975 const unsigned char *BufPtr = (const unsigned char*)Buffer->getBufferStart();
Derek Schuff2ea93872012-02-06 22:30:29 +00002976 const unsigned char *BufEnd = BufPtr+Buffer->getBufferSize();
2977
2978 if (Buffer->getBufferSize() & 3) {
2979 if (!isRawBitcode(BufPtr, BufEnd) && !isBitcodeWrapper(BufPtr, BufEnd))
2980 return Error("Invalid bitcode signature");
2981 else
2982 return Error("Bitcode stream should be a multiple of 4 bytes in length");
2983 }
2984
2985 // If we have a wrapper header, parse it and ignore the non-bc file contents.
2986 // The magic number is 0x0B17C0DE stored in little endian.
2987 if (isBitcodeWrapper(BufPtr, BufEnd))
2988 if (SkipBitcodeWrapperHeader(BufPtr, BufEnd, true))
2989 return Error("Invalid bitcode wrapper header");
2990
2991 StreamFile.reset(new BitstreamReader(BufPtr, BufEnd));
2992 Stream.init(*StreamFile);
2993
2994 return false;
2995}
2996
2997bool BitcodeReader::InitLazyStream() {
2998 // Check and strip off the bitcode wrapper; BitstreamReader expects never to
2999 // see it.
3000 StreamingMemoryObject *Bytes = new StreamingMemoryObject(LazyStreamer);
3001 StreamFile.reset(new BitstreamReader(Bytes));
3002 Stream.init(*StreamFile);
3003
3004 unsigned char buf[16];
3005 if (Bytes->readBytes(0, 16, buf, NULL) == -1)
3006 return Error("Bitcode stream must be at least 16 bytes in length");
3007
3008 if (!isBitcode(buf, buf + 16))
3009 return Error("Invalid bitcode signature");
3010
3011 if (isBitcodeWrapper(buf, buf + 4)) {
3012 const unsigned char *bitcodeStart = buf;
3013 const unsigned char *bitcodeEnd = buf + 16;
3014 SkipBitcodeWrapperHeader(bitcodeStart, bitcodeEnd, false);
3015 Bytes->dropLeadingBytes(bitcodeStart - buf);
3016 Bytes->setKnownObjectSize(bitcodeEnd - bitcodeStart);
3017 }
3018 return false;
3019}
Chris Lattner48f84872007-05-01 04:59:48 +00003020
Chris Lattnerc453f762007-04-29 07:54:31 +00003021//===----------------------------------------------------------------------===//
3022// External interface
3023//===----------------------------------------------------------------------===//
3024
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003025/// getLazyBitcodeModule - lazy function-at-a-time loading from a file.
Chris Lattnerc453f762007-04-29 07:54:31 +00003026///
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003027Module *llvm::getLazyBitcodeModule(MemoryBuffer *Buffer,
3028 LLVMContext& Context,
3029 std::string *ErrMsg) {
3030 Module *M = new Module(Buffer->getBufferIdentifier(), Context);
Owen Anderson8b477ed2009-07-01 16:58:40 +00003031 BitcodeReader *R = new BitcodeReader(Buffer, Context);
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003032 M->setMaterializer(R);
3033 if (R->ParseBitcodeInto(M)) {
Chris Lattnerc453f762007-04-29 07:54:31 +00003034 if (ErrMsg)
3035 *ErrMsg = R->getErrorString();
Daniel Dunbara279bc32009-09-20 02:20:51 +00003036
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003037 delete M; // Also deletes R.
Chris Lattnerc453f762007-04-29 07:54:31 +00003038 return 0;
3039 }
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003040 // Have the BitcodeReader dtor delete 'Buffer'.
3041 R->setBufferOwned(true);
Rafael Espindola47f79bb2012-01-02 07:49:53 +00003042
3043 R->materializeForwardReferencedFunctions();
3044
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003045 return M;
Chris Lattnerc453f762007-04-29 07:54:31 +00003046}
3047
Derek Schuff2ea93872012-02-06 22:30:29 +00003048
3049Module *llvm::getStreamedBitcodeModule(const std::string &name,
3050 DataStreamer *streamer,
3051 LLVMContext &Context,
3052 std::string *ErrMsg) {
3053 Module *M = new Module(name, Context);
3054 BitcodeReader *R = new BitcodeReader(streamer, Context);
3055 M->setMaterializer(R);
3056 if (R->ParseBitcodeInto(M)) {
3057 if (ErrMsg)
3058 *ErrMsg = R->getErrorString();
3059 delete M; // Also deletes R.
3060 return 0;
3061 }
3062 R->setBufferOwned(false); // no buffer to delete
3063 return M;
3064}
3065
Chris Lattnerc453f762007-04-29 07:54:31 +00003066/// ParseBitcodeFile - Read the specified bitcode file, returning the module.
3067/// If an error occurs, return null and fill in *ErrMsg if non-null.
Daniel Dunbara279bc32009-09-20 02:20:51 +00003068Module *llvm::ParseBitcodeFile(MemoryBuffer *Buffer, LLVMContext& Context,
Owen Anderson8b477ed2009-07-01 16:58:40 +00003069 std::string *ErrMsg){
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003070 Module *M = getLazyBitcodeModule(Buffer, Context, ErrMsg);
3071 if (!M) return 0;
Chris Lattnerb348bb82007-05-18 04:02:46 +00003072
3073 // Don't let the BitcodeReader dtor delete 'Buffer', regardless of whether
3074 // there was an error.
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003075 static_cast<BitcodeReader*>(M->getMaterializer())->setBufferOwned(false);
Daniel Dunbara279bc32009-09-20 02:20:51 +00003076
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003077 // Read in the entire module, and destroy the BitcodeReader.
3078 if (M->MaterializeAllPermanently(ErrMsg)) {
3079 delete M;
Bill Wendling34711742010-10-06 01:22:42 +00003080 return 0;
Jeffrey Yasskinf0356fe2010-01-27 20:34:15 +00003081 }
Bill Wendling34711742010-10-06 01:22:42 +00003082
Chad Rosiercbbb0962011-12-07 21:44:12 +00003083 // TODO: Restore the use-lists to the in-memory state when the bitcode was
3084 // written. We must defer until the Module has been fully materialized.
3085
Chris Lattnerc453f762007-04-29 07:54:31 +00003086 return M;
3087}
Bill Wendling34711742010-10-06 01:22:42 +00003088
3089std::string llvm::getBitcodeTargetTriple(MemoryBuffer *Buffer,
3090 LLVMContext& Context,
3091 std::string *ErrMsg) {
3092 BitcodeReader *R = new BitcodeReader(Buffer, Context);
3093 // Don't let the BitcodeReader dtor delete 'Buffer'.
3094 R->setBufferOwned(false);
3095
3096 std::string Triple("");
3097 if (R->ParseTriple(Triple))
3098 if (ErrMsg)
3099 *ErrMsg = R->getErrorString();
3100
3101 delete R;
3102 return Triple;
3103}