//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
-#include "llvm/ParameterAttributes.h"
+#include "llvm/ParamAttrsList.h"
+#include "llvm/AutoUpgrade.h"
#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemoryBuffer.h"
using namespace llvm;
-BitcodeReader::~BitcodeReader() {
+void BitcodeReader::FreeState() {
delete Buffer;
+ Buffer = 0;
+ std::vector<PATypeHolder>().swap(TypeList);
+ ValueList.clear();
+
+ // Drop references to ParamAttrs.
+ for (unsigned i = 0, e = ParamAttrs.size(); i != e; ++i)
+ ParamAttrs[i]->dropRef();
+
+ std::vector<const ParamAttrsList*>().swap(ParamAttrs);
+ std::vector<BasicBlock*>().swap(FunctionBBs);
+ std::vector<Function*>().swap(FunctionsWithBodies);
+ DeferredFunctionInfo.clear();
}
//===----------------------------------------------------------------------===//
void operator=(const ConstantPlaceHolder &); // DO NOT IMPLEMENT
public:
Use Op;
- ConstantPlaceHolder(const Type *Ty)
+ explicit ConstantPlaceHolder(const Type *Ty)
: ConstantExpr(Ty, Instruction::UserOp1, &Op, 1),
Op(UndefValue::get(Type::Int32Ty), this) {
}
if (Record.size() & 1)
return Error("Invalid ENTRY record");
- ParamAttrsWithIndex PAWI;
for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
- PAWI.index = Record[i];
- PAWI.attrs = Record[i+1];
- Attrs.push_back(PAWI);
+ if (Record[i+1] != ParamAttr::None)
+ Attrs.push_back(ParamAttrsWithIndex::get(Record[i], Record[i+1]));
+ }
+ if (Attrs.empty()) {
+ ParamAttrs.push_back(0);
+ } else {
+ ParamAttrs.push_back(ParamAttrsList::get(Attrs));
+ ParamAttrs.back()->addRef();
}
- ParamAttrs.push_back(ParamAttrsList::get(Attrs));
+
Attrs.clear();
break;
}
- }
+ }
}
}
case bitc::TYPE_CODE_DOUBLE: // DOUBLE
ResultTy = Type::DoubleTy;
break;
+ case bitc::TYPE_CODE_X86_FP80: // X86_FP80
+ ResultTy = Type::X86_FP80Ty;
+ break;
+ case bitc::TYPE_CODE_FP128: // FP128
+ ResultTy = Type::FP128Ty;
+ break;
+ case bitc::TYPE_CODE_PPC_FP128: // PPC_FP128
+ ResultTy = Type::PPC_FP128Ty;
+ break;
case bitc::TYPE_CODE_LABEL: // LABEL
ResultTy = Type::LabelTy;
break;
ResultTy = IntegerType::get(Record[0]);
break;
- case bitc::TYPE_CODE_POINTER: // POINTER: [pointee type]
+ case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or
+ // [pointee type, address space]
if (Record.size() < 1)
return Error("Invalid POINTER type record");
- ResultTy = PointerType::get(getTypeByID(Record[0], true));
+ unsigned AddressSpace = 0;
+ if (Record.size() == 2)
+ AddressSpace = Record[1];
+ ResultTy = PointerType::get(getTypeByID(Record[0], true), AddressSpace);
break;
+ }
case bitc::TYPE_CODE_FUNCTION: {
+ // FIXME: attrid is dead, remove it in LLVM 3.0
// FUNCTION: [vararg, attrid, retty, paramty x N]
if (Record.size() < 3)
return Error("Invalid FUNCTION type record");
ArgTys.push_back(getTypeByID(Record[i], true));
ResultTy = FunctionType::get(getTypeByID(Record[2], true), ArgTys,
- Record[0], getParamAttrs(Record[1]));
+ Record[0]);
break;
}
case bitc::TYPE_CODE_STRUCT: { // STRUCT: [ispacked, eltty x N]
NumWords, &Words[0]));
break;
}
- case bitc::CST_CODE_FLOAT: // FLOAT: [fpval]
+ case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval]
if (Record.empty())
return Error("Invalid FLOAT record");
if (CurTy == Type::FloatTy)
- V = ConstantFP::get(CurTy, BitsToFloat(Record[0]));
+ V = ConstantFP::get(CurTy, APFloat(APInt(32, (uint32_t)Record[0])));
else if (CurTy == Type::DoubleTy)
- V = ConstantFP::get(CurTy, BitsToDouble(Record[0]));
+ V = ConstantFP::get(CurTy, APFloat(APInt(64, Record[0])));
+ else if (CurTy == Type::X86_FP80Ty)
+ V = ConstantFP::get(CurTy, APFloat(APInt(80, 2, &Record[0])));
+ else if (CurTy == Type::FP128Ty)
+ V = ConstantFP::get(CurTy, APFloat(APInt(128, 2, &Record[0]), true));
+ else if (CurTy == Type::PPC_FP128Ty)
+ V = ConstantFP::get(CurTy, APFloat(APInt(128, 2, &Record[0])));
else
V = UndefValue::get(CurTy);
break;
+ }
case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number]
if (Record.empty())
SmallVector<uint64_t, 64> Record;
std::vector<std::string> SectionTable;
+ std::vector<std::string> CollectorTable;
// Read all the records for this module.
while (!Stream.AtEndOfStream()) {
if (!FunctionsWithBodies.empty())
return Error("Too few function bodies found");
+ // Look for intrinsic functions which need to be upgraded at some point
+ for (Module::iterator FI = TheModule->begin(), FE = TheModule->end();
+ FI != FE; ++FI) {
+ Function* NewFn;
+ if (UpgradeIntrinsicFunction(FI, NewFn))
+ UpgradedIntrinsics.push_back(std::make_pair(FI, NewFn));
+ }
+
// Force deallocation of memory for these vectors to favor the client that
// want lazy deserialization.
std::vector<std::pair<GlobalVariable*, unsigned> >().swap(GlobalInits);
SectionTable.push_back(S);
break;
}
- // GLOBALVAR: [type, isconst, initid,
+ case bitc::MODULE_CODE_COLLECTORNAME: { // SECTIONNAME: [strchr x N]
+ std::string S;
+ if (ConvertToString(Record, 0, S))
+ return Error("Invalid MODULE_CODE_COLLECTORNAME record");
+ CollectorTable.push_back(S);
+ break;
+ }
+ // GLOBALVAR: [pointer type, isconst, initid,
// linkage, alignment, section, visibility, threadlocal]
case bitc::MODULE_CODE_GLOBALVAR: {
if (Record.size() < 6)
const Type *Ty = getTypeByID(Record[0]);
if (!isa<PointerType>(Ty))
return Error("Global not a pointer type!");
+ unsigned AddressSpace = cast<PointerType>(Ty)->getAddressSpace();
Ty = cast<PointerType>(Ty)->getElementType();
bool isConstant = Record[1];
Section = SectionTable[Record[5]-1];
}
GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility;
- if (Record.size() >= 6) Visibility = GetDecodedVisibility(Record[6]);
+ if (Record.size() > 6)
+ Visibility = GetDecodedVisibility(Record[6]);
bool isThreadLocal = false;
- if (Record.size() >= 7) isThreadLocal = Record[7];
+ if (Record.size() > 7)
+ isThreadLocal = Record[7];
GlobalVariable *NewGV =
- new GlobalVariable(Ty, isConstant, Linkage, 0, "", TheModule);
+ new GlobalVariable(Ty, isConstant, Linkage, 0, "", TheModule,
+ isThreadLocal, AddressSpace);
NewGV->setAlignment(Alignment);
if (!Section.empty())
NewGV->setSection(Section);
GlobalInits.push_back(std::make_pair(NewGV, InitID-1));
break;
}
- // FUNCTION: [type, callingconv, isproto, linkage, alignment, section,
- // visibility]
+ // FUNCTION: [type, callingconv, isproto, linkage, paramattr,
+ // alignment, section, visibility, collector]
case bitc::MODULE_CODE_FUNCTION: {
- if (Record.size() < 7)
+ if (Record.size() < 8)
return Error("Invalid MODULE_CODE_FUNCTION record");
const Type *Ty = getTypeByID(Record[0]);
if (!isa<PointerType>(Ty))
Func->setCallingConv(Record[1]);
bool isProto = Record[2];
Func->setLinkage(GetDecodedLinkage(Record[3]));
- Func->setAlignment((1 << Record[4]) >> 1);
- if (Record[5]) {
- if (Record[5]-1 >= SectionTable.size())
+ const ParamAttrsList *PAL = getParamAttrs(Record[4]);
+ Func->setParamAttrs(PAL);
+
+ Func->setAlignment((1 << Record[5]) >> 1);
+ if (Record[6]) {
+ if (Record[6]-1 >= SectionTable.size())
return Error("Invalid section ID");
- Func->setSection(SectionTable[Record[5]-1]);
+ Func->setSection(SectionTable[Record[6]-1]);
+ }
+ Func->setVisibility(GetDecodedVisibility(Record[7]));
+ if (Record.size() > 8 && Record[8]) {
+ if (Record[8]-1 > CollectorTable.size())
+ return Error("Invalid collector ID");
+ Func->setCollector(CollectorTable[Record[8]-1].c_str());
}
- Func->setVisibility(GetDecodedVisibility(Record[6]));
ValueList.push_back(Func);
break;
}
// ALIAS: [alias type, aliasee val#, linkage]
+ // ALIAS: [alias type, aliasee val#, linkage, visibility]
case bitc::MODULE_CODE_ALIAS: {
if (Record.size() < 3)
return Error("Invalid MODULE_ALIAS record");
GlobalAlias *NewGA = new GlobalAlias(Ty, GetDecodedLinkage(Record[2]),
"", 0, TheModule);
+ // Old bitcode files didn't have visibility field.
+ if (Record.size() > 3)
+ NewGA->setVisibility(GetDecodedVisibility(Record[3]));
ValueList.push_back(NewGA);
AliasInits.push_back(std::make_pair(NewGA, Record[1]));
break;
}
-bool BitcodeReader::materializeFunction(Function *F, std::string *ErrInfo) {
- // If it already is material, ignore the request.
- if (!F->hasNotBeenReadFromBytecode()) return false;
-
- DenseMap<Function*, std::pair<uint64_t, unsigned> >::iterator DFII =
- DeferredFunctionInfo.find(F);
- assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!");
-
- // Move the bit stream to the saved position of the deferred function body and
- // restore the real linkage type for the function.
- Stream.JumpToBit(DFII->second.first);
- F->setLinkage((GlobalValue::LinkageTypes)DFII->second.second);
- DeferredFunctionInfo.erase(DFII);
-
- if (ParseFunctionBody(F)) {
- if (ErrInfo) *ErrInfo = ErrorString;
- return true;
- }
-
- return false;
-}
-
-Module *BitcodeReader::materializeModule(std::string *ErrInfo) {
- DenseMap<Function*, std::pair<uint64_t, unsigned> >::iterator I =
- DeferredFunctionInfo.begin();
- while (!DeferredFunctionInfo.empty()) {
- Function *F = (*I++).first;
- assert(F->hasNotBeenReadFromBytecode() &&
- "Deserialized function found in map!");
- if (materializeFunction(F, ErrInfo))
- return 0;
- }
- return TheModule;
-}
-
-
/// ParseFunctionBody - Lazily parse the specified function body block.
bool BitcodeReader::ParseFunctionBody(Function *F) {
if (Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID))
CurBB = FunctionBBs[0];
continue;
+ case bitc::FUNC_CODE_INST_BB_UNWINDDEST: // BB_UNWINDDEST: [bb#]
+ if (CurBB->getUnwindDest())
+ return Error("Only permit one BB_UNWINDDEST per BB");
+ if (Record.size() != 1)
+ return Error("Invalid BB_UNWINDDEST record");
+
+ CurBB->setUnwindDest(getBasicBlock(Record[0]));
+ continue;
+
case bitc::FUNC_CODE_INST_BINOP: { // BINOP: [opval, ty, opval, opcode]
unsigned OpNum = 0;
Value *LHS, *RHS;
GEPIdx.push_back(Op);
}
- I = new GetElementPtrInst(BasePtr, &GEPIdx[0], GEPIdx.size());
+ I = new GetElementPtrInst(BasePtr, GEPIdx.begin(), GEPIdx.end());
break;
}
I = new ICmpInst((ICmpInst::Predicate)Record[OpNum], LHS, RHS);
break;
}
+ case bitc::FUNC_CODE_INST_GETRESULT: { // GETRESULT: [ty, val, n]
+ if (Record.size() != 2)
+ return Error("Invalid GETRESULT record");
+ unsigned OpNum = 0;
+ Value *Op;
+ getValueTypePair(Record, OpNum, NextValueNo, Op);
+ unsigned Index = Record[1];
+ I = new GetResultInst(Op, Index);
+ break;
+ }
case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>]
- if (Record.size() == 0) {
- I = new ReturnInst();
- break;
- } else {
- unsigned OpNum = 0;
- Value *Op;
- if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
- OpNum != Record.size())
- return Error("Invalid RET record");
- I = new ReturnInst(Op);
- break;
+ {
+ unsigned Size = Record.size();
+ if (Size == 0) {
+ I = new ReturnInst();
+ break;
+ } else {
+ unsigned OpNum = 0;
+ SmallVector<Value *,4> Vs;
+ do {
+ Value *Op = NULL;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+ return Error("Invalid RET record");
+ Vs.push_back(Op);
+ } while(OpNum != Record.size());
+
+ // SmallVector Vs has at least one element.
+ I = new ReturnInst(&Vs[0], Vs.size());
+ break;
+ }
}
case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#]
if (Record.size() != 1 && Record.size() != 3)
break;
}
- case bitc::FUNC_CODE_INST_INVOKE: { // INVOKE: [cc,fnty, op0,op1,op2, ...]
- if (Record.size() < 3) return Error("Invalid INVOKE record");
- unsigned CCInfo = Record[0];
- BasicBlock *NormalBB = getBasicBlock(Record[1]);
- BasicBlock *UnwindBB = getBasicBlock(Record[2]);
+ case bitc::FUNC_CODE_INST_INVOKE: {
+ // INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...]
+ if (Record.size() < 4) return Error("Invalid INVOKE record");
+ const ParamAttrsList *PAL = getParamAttrs(Record[0]);
+ unsigned CCInfo = Record[1];
+ BasicBlock *NormalBB = getBasicBlock(Record[2]);
+ BasicBlock *UnwindBB = getBasicBlock(Record[3]);
- unsigned OpNum = 3;
+ unsigned OpNum = 4;
Value *Callee;
if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
return Error("Invalid INVOKE record");
}
}
- I = new InvokeInst(Callee, NormalBB, UnwindBB, &Ops[0], Ops.size());
+ I = new InvokeInst(Callee, NormalBB, UnwindBB, Ops.begin(), Ops.end());
cast<InvokeInst>(I)->setCallingConv(CCInfo);
+ cast<InvokeInst>(I)->setParamAttrs(PAL);
break;
}
case bitc::FUNC_CODE_INST_UNWIND: // UNWIND
I = new LoadInst(Op, "", Record[OpNum+1], (1 << Record[OpNum]) >> 1);
break;
}
+ case bitc::FUNC_CODE_INST_STORE2: { // STORE2:[ptrty, ptr, val, align, vol]
+ unsigned OpNum = 0;
+ Value *Val, *Ptr;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
+ getValue(Record, OpNum,
+ cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
+ OpNum+2 != Record.size())
+ return Error("Invalid STORE record");
+
+ I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1);
+ break;
+ }
case bitc::FUNC_CODE_INST_STORE: { // STORE:[val, valty, ptr, align, vol]
+ // FIXME: Legacy form of store instruction. Should be removed in LLVM 3.0.
unsigned OpNum = 0;
Value *Val, *Ptr;
if (getValueTypePair(Record, OpNum, NextValueNo, Val) ||
- getValue(Record, OpNum, PointerType::get(Val->getType()), Ptr) ||
+ getValue(Record, OpNum, PointerType::getUnqual(Val->getType()), Ptr)||
OpNum+2 != Record.size())
return Error("Invalid STORE record");
I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1);
break;
}
- case bitc::FUNC_CODE_INST_CALL: { // CALL: [cc, fnty, fnid, arg0, arg1...]
- if (Record.size() < 1)
+ case bitc::FUNC_CODE_INST_CALL: {
+ // CALL: [paramattrs, cc, fnty, fnid, arg0, arg1...]
+ if (Record.size() < 3)
return Error("Invalid CALL record");
- unsigned CCInfo = Record[0];
- unsigned OpNum = 1;
+ const ParamAttrsList *PAL = getParamAttrs(Record[0]);
+ unsigned CCInfo = Record[1];
+
+ unsigned OpNum = 2;
Value *Callee;
if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
return Error("Invalid CALL record");
SmallVector<Value*, 16> Args;
// Read the fixed params.
for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
- Args.push_back(getFnValueByID(Record[OpNum], FTy->getParamType(i)));
+ if (FTy->getParamType(i)->getTypeID()==Type::LabelTyID)
+ Args.push_back(getBasicBlock(Record[OpNum]));
+ else
+ Args.push_back(getFnValueByID(Record[OpNum], FTy->getParamType(i)));
if (Args.back() == 0) return Error("Invalid CALL record");
}
}
}
- I = new CallInst(Callee, &Args[0], Args.size());
+ I = new CallInst(Callee, Args.begin(), Args.end());
cast<CallInst>(I)->setCallingConv(CCInfo>>1);
cast<CallInst>(I)->setTailCall(CCInfo & 1);
+ cast<CallInst>(I)->setParamAttrs(PAL);
break;
}
case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty]
return false;
}
+//===----------------------------------------------------------------------===//
+// ModuleProvider implementation
+//===----------------------------------------------------------------------===//
+
+
+bool BitcodeReader::materializeFunction(Function *F, std::string *ErrInfo) {
+ // If it already is material, ignore the request.
+ if (!F->hasNotBeenReadFromBitcode()) return false;
+
+ DenseMap<Function*, std::pair<uint64_t, unsigned> >::iterator DFII =
+ DeferredFunctionInfo.find(F);
+ assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!");
+
+ // Move the bit stream to the saved position of the deferred function body and
+ // restore the real linkage type for the function.
+ Stream.JumpToBit(DFII->second.first);
+ F->setLinkage((GlobalValue::LinkageTypes)DFII->second.second);
+
+ if (ParseFunctionBody(F)) {
+ if (ErrInfo) *ErrInfo = ErrorString;
+ return true;
+ }
+
+ // Upgrade any old intrinsic calls in the function.
+ for (UpgradedIntrinsicMap::iterator I = UpgradedIntrinsics.begin(),
+ E = UpgradedIntrinsics.end(); I != E; ++I) {
+ if (I->first != I->second) {
+ for (Value::use_iterator UI = I->first->use_begin(),
+ UE = I->first->use_end(); UI != UE; ) {
+ if (CallInst* CI = dyn_cast<CallInst>(*UI++))
+ UpgradeIntrinsicCall(CI, I->second);
+ }
+ }
+ }
+
+ return false;
+}
+
+void BitcodeReader::dematerializeFunction(Function *F) {
+ // If this function isn't materialized, or if it is a proto, this is a noop.
+ if (F->hasNotBeenReadFromBitcode() || F->isDeclaration())
+ return;
+
+ assert(DeferredFunctionInfo.count(F) && "No info to read function later?");
+
+ // Just forget the function body, we can remat it later.
+ F->deleteBody();
+ F->setLinkage(GlobalValue::GhostLinkage);
+}
+
+
+Module *BitcodeReader::materializeModule(std::string *ErrInfo) {
+ for (DenseMap<Function*, std::pair<uint64_t, unsigned> >::iterator I =
+ DeferredFunctionInfo.begin(), E = DeferredFunctionInfo.end(); I != E;
+ ++I) {
+ Function *F = I->first;
+ if (F->hasNotBeenReadFromBitcode() &&
+ materializeFunction(F, ErrInfo))
+ return 0;
+ }
+
+ // Upgrade any intrinsic calls that slipped through (should not happen!) and
+ // delete the old functions to clean up. We can't do this unless the entire
+ // module is materialized because there could always be another function body
+ // with calls to the old function.
+ for (std::vector<std::pair<Function*, Function*> >::iterator I =
+ UpgradedIntrinsics.begin(), E = UpgradedIntrinsics.end(); I != E; ++I) {
+ if (I->first != I->second) {
+ for (Value::use_iterator UI = I->first->use_begin(),
+ UE = I->first->use_end(); UI != UE; ) {
+ if (CallInst* CI = dyn_cast<CallInst>(*UI++))
+ UpgradeIntrinsicCall(CI, I->second);
+ }
+ ValueList.replaceUsesOfWith(I->first, I->second);
+ I->first->eraseFromParent();
+ }
+ }
+ std::vector<std::pair<Function*, Function*> >().swap(UpgradedIntrinsics);
+
+ return TheModule;
+}
+
+
+/// This method is provided by the parent ModuleProvde class and overriden
+/// here. It simply releases the module from its provided and frees up our
+/// state.
+/// @brief Release our hold on the generated module
+Module *BitcodeReader::releaseModule(std::string *ErrInfo) {
+ // Since we're losing control of this Module, we must hand it back complete
+ Module *M = ModuleProvider::releaseModule(ErrInfo);
+ FreeState();
+ return M;
+}
+
//===----------------------------------------------------------------------===//
// External interface
R = static_cast<BitcodeReader*>(getBitcodeModuleProvider(Buffer, ErrMsg));
if (!R) return 0;
- // Read the whole module, get a pointer to it, tell ModuleProvider not to
- // delete it when its dtor is run.
- Module *M = R->releaseModule(ErrMsg);
-
- // Don't let the BitcodeReader dtor delete 'Buffer'.
+ // Read in the entire module.
+ Module *M = R->materializeModule(ErrMsg);
+
+ // Don't let the BitcodeReader dtor delete 'Buffer', regardless of whether
+ // there was an error.
R->releaseMemoryBuffer();
+
+ // If there was no error, tell ModuleProvider not to delete it when its dtor
+ // is run.
+ if (M)
+ M = R->releaseModule(ErrMsg);
+
delete R;
return M;
}
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