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Write and read metadata attachments. 

llvm-svn: 82259
This commit is contained in:
Devang Patel 2009-09-18 19:26:43 +00:00
parent 788eaabd18
commit af206b8c88
10 changed files with 256 additions and 19 deletions
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7
llvm/include/llvm/Bitcode/LLVMBitCodes.h
View File

@ -34,7 +34,8 @@ namespace bitc {
FUNCTION_BLOCK_ID,
TYPE_SYMTAB_BLOCK_ID,
VALUE_SYMTAB_BLOCK_ID,
METADATA_BLOCK_ID
METADATA_BLOCK_ID,
METADATA_ATTACHMENT_ID
};
@ -111,7 +112,9 @@ namespace bitc {
METADATA_STRING = 1, // MDSTRING: [values]
METADATA_NODE = 2, // MDNODE: [n x (type num, value num)]
METADATA_NAME = 3, // STRING: [values]
METADATA_NAMED_NODE = 4 // NAMEDMDNODE: [n x mdnodes]
METADATA_NAMED_NODE = 4, // NAMEDMDNODE: [n x mdnodes]
METADATA_KIND = 5, // [n x [id, name]]
METADATA_ATTACHMENT = 6 // [m x [value, [n x [id, mdnode]]]
};
// The constants block (CONSTANTS_BLOCK_ID) describes emission for each
// constant and maintains an implicit current type value.

9
llvm/include/llvm/Metadata.h
View File

@ -311,13 +311,14 @@ public:
/// MDKindID - This id identifies metadata kind the metadata store. Valid
/// ID values are 1 or higher. This ID is set by RegisterMDKind.
typedef unsigned MDKindID;
class Metadata {
public:
typedef std::pair<MDKindID, WeakVH> MDPairTy;
typedef SmallVector<MDPairTy, 2> MDMapTy;
private:
typedef DenseMap<const Instruction *, MDMapTy> MDStoreTy;
friend class BitcodeReader;
private:
/// MetadataStore - Collection of metadata used in this context.
MDStoreTy MetadataStore;
@ -344,6 +345,10 @@ public:
/// setMD - Attach the metadata of given kind with an Instruction.
void setMD(MDKindID Kind, MDNode *Node, Instruction *Inst);
/// getHandlerNames - Get handler names. This is used by bitcode
/// writer.
const StringMap<unsigned> *getHandlerNames();
/// ValueIsDeleted - This handler is used to update metadata store
/// when a value is deleted.
void ValueIsDeleted(Value *V) {}

92
llvm/lib/Bitcode/Reader/BitcodeReader.cpp
View File

@ -830,6 +830,22 @@ bool BitcodeReader::ParseMetadata() {
MDValueList.AssignValue(V, NextValueNo++);
break;
}
case bitc::METADATA_KIND: {
unsigned RecordLength = Record.size();
if (Record.empty() || RecordLength < 2)
return Error("Invalid METADATA_KIND record");
SmallString<8> Name;
Name.resize(RecordLength-1);
MDKindID Kind = Record[0];
for (unsigned i = 1; i != RecordLength; ++i)
Name[i-1] = Record[i];
Metadata &TheMetadata = Context.getMetadata();
assert(TheMetadata.MDHandlerNames.find(Name.str())
== TheMetadata.MDHandlerNames.end() &&
"Already registered MDKind!");
TheMetadata.MDHandlerNames[Name.str()] = Kind;
break;
}
}
}
}
@ -1535,6 +1551,45 @@ bool BitcodeReader::ParseBitcode() {
return false;
}
/// ParseMetadataAttachment - Parse metadata attachments.
bool BitcodeReader::ParseMetadataAttachment() {
if (Stream.EnterSubBlock(bitc::METADATA_ATTACHMENT_ID))
return Error("Malformed block record");
Metadata &TheMetadata = Context.getMetadata();
SmallVector<uint64_t, 64> Record;
while(1) {
unsigned Code = Stream.ReadCode();
if (Code == bitc::END_BLOCK) {
if (Stream.ReadBlockEnd())
return Error("Error at end of PARAMATTR block");
break;
}
if (Code == bitc::DEFINE_ABBREV) {
Stream.ReadAbbrevRecord();
continue;
}
// Read a metadata attachment record.
Record.clear();
switch (Stream.ReadRecord(Code, Record)) {
default: // Default behavior: ignore.
break;
case bitc::METADATA_ATTACHMENT: {
unsigned RecordLength = Record.size();
if (Record.empty() || (RecordLength - 1) % 2 == 1)
return Error ("Invalid METADATA_ATTACHMENT reader!");
Instruction *Inst = InstructionList[Record[0]];
for (unsigned i = 1; i != RecordLength; i = i+2) {
MDKindID Kind = Record[i];
Value *Node = MDValueList.getValueFwdRef(Record[i+1]);
TheMetadata.setMD(Kind, cast<MDNode>(Node), Inst);
}
break;
}
}
}
return false;
}
/// ParseFunctionBody - Lazily parse the specified function body block.
bool BitcodeReader::ParseFunctionBody(Function *F) {
@ -1574,6 +1629,9 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
case bitc::VALUE_SYMTAB_BLOCK_ID:
if (ParseValueSymbolTable()) return true;
break;
case bitc::METADATA_ATTACHMENT_ID:
if (ParseMetadataAttachment()) return true;
break;
}
continue;
}
@ -1611,6 +1669,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
int Opc = GetDecodedBinaryOpcode(Record[OpNum++], LHS->getType());
if (Opc == -1) return Error("Invalid BINOP record");
I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
InstructionList.push_back(I);
if (OpNum < Record.size()) {
if (Opc == Instruction::Add ||
Opc == Instruction::Sub ||
@ -1638,6 +1697,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
if (Opc == -1 || ResTy == 0)
return Error("Invalid CAST record");
I = CastInst::Create((Instruction::CastOps)Opc, Op, ResTy);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_INBOUNDS_GEP:
@ -1656,6 +1716,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
}
I = GetElementPtrInst::Create(BasePtr, GEPIdx.begin(), GEPIdx.end());
InstructionList.push_back(I);
if (BitCode == bitc::FUNC_CODE_INST_INBOUNDS_GEP)
cast<GetElementPtrInst>(I)->setIsInBounds(true);
break;
@ -1679,6 +1740,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
I = ExtractValueInst::Create(Agg,
EXTRACTVALIdx.begin(), EXTRACTVALIdx.end());
InstructionList.push_back(I);
break;
}
@ -1703,6 +1765,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
I = InsertValueInst::Create(Agg, Val,
INSERTVALIdx.begin(), INSERTVALIdx.end());
InstructionList.push_back(I);
break;
}
@ -1717,6 +1780,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
return Error("Invalid SELECT record");
I = SelectInst::Create(Cond, TrueVal, FalseVal);
InstructionList.push_back(I);
break;
}
@ -1743,6 +1807,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
}
I = SelectInst::Create(Cond, TrueVal, FalseVal);
InstructionList.push_back(I);
break;
}
@ -1753,6 +1818,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
getValue(Record, OpNum, Type::getInt32Ty(Context), Idx))
return Error("Invalid EXTRACTELT record");
I = ExtractElementInst::Create(Vec, Idx);
InstructionList.push_back(I);
break;
}
@ -1765,6 +1831,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
getValue(Record, OpNum, Type::getInt32Ty(Context), Idx))
return Error("Invalid INSERTELT record");
I = InsertElementInst::Create(Vec, Elt, Idx);
InstructionList.push_back(I);
break;
}
@ -1778,6 +1845,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
if (getValueTypePair(Record, OpNum, NextValueNo, Mask))
return Error("Invalid SHUFFLEVEC record");
I = new ShuffleVectorInst(Vec1, Vec2, Mask);
InstructionList.push_back(I);
break;
}
@ -1799,6 +1867,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
I = new FCmpInst((FCmpInst::Predicate)Record[OpNum], LHS, RHS);
else
I = new ICmpInst((ICmpInst::Predicate)Record[OpNum], LHS, RHS);
InstructionList.push_back(I);
break;
}
@ -1810,6 +1879,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
getValueTypePair(Record, OpNum, NextValueNo, Op);
unsigned Index = Record[1];
I = ExtractValueInst::Create(Op, Index);
InstructionList.push_back(I);
break;
}
@ -1818,6 +1888,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
unsigned Size = Record.size();
if (Size == 0) {
I = ReturnInst::Create(Context);
InstructionList.push_back(I);
break;
}
@ -1837,15 +1908,18 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
Value *RV = UndefValue::get(ReturnType);
for (unsigned i = 0, e = Vs.size(); i != e; ++i) {
I = InsertValueInst::Create(RV, Vs[i], i, "mrv");
InstructionList.push_back(I);
CurBB->getInstList().push_back(I);
ValueList.AssignValue(I, NextValueNo++);
RV = I;
}
I = ReturnInst::Create(Context, RV);
InstructionList.push_back(I);
break;
}
I = ReturnInst::Create(Context, Vs[0]);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#]
@ -1855,14 +1929,17 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
if (TrueDest == 0)
return Error("Invalid BR record");
if (Record.size() == 1)
if (Record.size() == 1) {
I = BranchInst::Create(TrueDest);
InstructionList.push_back(I);
}
else {
BasicBlock *FalseDest = getBasicBlock(Record[1]);
Value *Cond = getFnValueByID(Record[2], Type::getInt1Ty(Context));
if (FalseDest == 0 || Cond == 0)
return Error("Invalid BR record");
I = BranchInst::Create(TrueDest, FalseDest, Cond);
InstructionList.push_back(I);
}
break;
}
@ -1876,6 +1953,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
return Error("Invalid SWITCH record");
unsigned NumCases = (Record.size()-3)/2;
SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases);
InstructionList.push_back(SI);
for (unsigned i = 0, e = NumCases; i != e; ++i) {
ConstantInt *CaseVal =
dyn_cast_or_null<ConstantInt>(getFnValueByID(Record[3+i*2], OpTy));
@ -1933,6 +2011,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
I = InvokeInst::Create(Callee, NormalBB, UnwindBB,
Ops.begin(), Ops.end());
InstructionList.push_back(I);
cast<InvokeInst>(I)->setCallingConv(
static_cast<CallingConv::ID>(CCInfo));
cast<InvokeInst>(I)->setAttributes(PAL);
@ -1940,9 +2019,11 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
}
case bitc::FUNC_CODE_INST_UNWIND: // UNWIND
I = new UnwindInst(Context);
InstructionList.push_back(I);
break;
case bitc::FUNC_CODE_INST_UNREACHABLE: // UNREACHABLE
I = new UnreachableInst(Context);
InstructionList.push_back(I);
break;
case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...]
if (Record.size() < 1 || ((Record.size()-1)&1))
@ -1951,6 +2032,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
if (!Ty) return Error("Invalid PHI record");
PHINode *PN = PHINode::Create(Ty);
InstructionList.push_back(PN);
PN->reserveOperandSpace((Record.size()-1)/2);
for (unsigned i = 0, e = Record.size()-1; i != e; i += 2) {
@ -1972,6 +2054,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
unsigned Align = Record[2];
if (!Ty || !Size) return Error("Invalid MALLOC record");
I = new MallocInst(Ty->getElementType(), Size, (1 << Align) >> 1);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_FREE: { // FREE: [op, opty]
@ -1981,6 +2064,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
OpNum != Record.size())
return Error("Invalid FREE record");
I = new FreeInst(Op);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, op, align]
@ -1992,6 +2076,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
unsigned Align = Record[2];
if (!Ty || !Size) return Error("Invalid ALLOCA record");
I = new AllocaInst(Ty->getElementType(), Size, (1 << Align) >> 1);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_LOAD: { // LOAD: [opty, op, align, vol]
@ -2002,6 +2087,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
return Error("Invalid LOAD record");
I = new LoadInst(Op, "", Record[OpNum+1], (1 << Record[OpNum]) >> 1);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_STORE2: { // STORE2:[ptrty, ptr, val, align, vol]
@ -2014,6 +2100,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
return Error("Invalid STORE record");
I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_STORE: { // STORE:[val, valty, ptr, align, vol]
@ -2027,6 +2114,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
return Error("Invalid STORE record");
I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_CALL: {
@ -2072,6 +2160,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
}
I = CallInst::Create(Callee, Args.begin(), Args.end());
InstructionList.push_back(I);
cast<CallInst>(I)->setCallingConv(
static_cast<CallingConv::ID>(CCInfo>>1));
cast<CallInst>(I)->setTailCall(CCInfo & 1);
@ -2087,6 +2176,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
if (!OpTy || !Op || !ResTy)
return Error("Invalid VAARG record");
I = new VAArgInst(Op, ResTy);
InstructionList.push_back(I);
break;
}
}

3
llvm/lib/Bitcode/Reader/BitcodeReader.h
View File

@ -132,6 +132,8 @@ class BitcodeReader : public ModuleProvider {
std::vector<PATypeHolder> TypeList;
BitcodeReaderValueList ValueList;
BitcodeReaderMDValueList MDValueList;
SmallVector<Instruction *, 64> InstructionList;
std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInits;
std::vector<std::pair<GlobalAlias*, unsigned> > AliasInits;
@ -250,6 +252,7 @@ private:
bool ParseFunctionBody(Function *F);
bool ResolveGlobalAndAliasInits();
bool ParseMetadata();
bool ParseMetadataAttachment();
};
} // End llvm namespace

76
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -551,7 +551,74 @@ static void WriteModuleMetadata(const ValueEnumerator &VE,
}
if (StartedMetadataBlock)
Stream.ExitBlock();
Stream.ExitBlock();
}
static void WriteMetadataAttachment(const Function &F,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
bool StartedMetadataBlock = false;
SmallVector<uint64_t, 64> Record;
// Write metadata attachments
// METADATA_ATTACHMENT - [m x [value, [n x [id, mdnode]]]
Metadata &TheMetadata = F.getContext().getMetadata();
for (Function::const_iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
I != E; ++I) {
const Metadata::MDMapTy *P = TheMetadata.getMDs(I);
if (!P) continue;
bool RecordedInstruction = false;
for (Metadata::MDMapTy::const_iterator PI = P->begin(), PE = P->end();
PI != PE; ++PI) {
if (MDNode *ND = dyn_cast_or_null<MDNode>(PI->second)) {
if (RecordedInstruction == false) {
Record.push_back(VE.getInstructionID(I));
RecordedInstruction = true;
}
Record.push_back(PI->first);
Record.push_back(VE.getValueID(ND));
}
}
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_ATTACHMENT_ID, 3);
StartedMetadataBlock = true;
}
Stream.EmitRecord(bitc::METADATA_ATTACHMENT, Record, 0);
Record.clear();
}
if (StartedMetadataBlock)
Stream.ExitBlock();
}
static void WriteModuleMetadataStore(const Module *M,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
bool StartedMetadataBlock = false;
SmallVector<uint64_t, 64> Record;
// Write metadata kinds
// METADATA_KIND - [n x [id, name]]
Metadata &TheMetadata = M->getContext().getMetadata();
const StringMap<unsigned> *Kinds = TheMetadata.getHandlerNames();
for (StringMap<unsigned>::const_iterator
I = Kinds->begin(), E = Kinds->end(); I != E; ++I) {
Record.push_back(I->second);
StringRef KName = I->first();
for (unsigned i = 0, e = KName.size(); i != e; ++i)
Record.push_back(KName[i]);
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
StartedMetadataBlock = true;
}
Stream.EmitRecord(bitc::METADATA_KIND, Record, 0);
Record.clear();
}
if (StartedMetadataBlock)
Stream.ExitBlock();
}
static void WriteConstants(unsigned FirstVal, unsigned LastVal,
@ -833,6 +900,7 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
SmallVector<unsigned, 64> &Vals) {
unsigned Code = 0;
unsigned AbbrevToUse = 0;
VE.setInstructionID(&I);
switch (I.getOpcode()) {
default:
if (Instruction::isCast(I.getOpcode())) {
@ -1146,7 +1214,8 @@ static void WriteFunction(const Function &F, ValueEnumerator &VE,
// Emit names for all the instructions etc.
WriteValueSymbolTable(F.getValueSymbolTable(), VE, Stream);
WriteMetadataAttachment(F, VE, Stream);
VE.purgeFunction();
Stream.ExitBlock();
}
@ -1390,6 +1459,9 @@ static void WriteModule(const Module *M, BitstreamWriter &Stream) {
for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
if (!I->isDeclaration())
WriteFunction(*I, VE, Stream);
// Emit metadata.
WriteModuleMetadataStore(M, VE, Stream);
// Emit the type symbol table information.
WriteTypeSymbolTable(M->getTypeSymbolTable(), VE, Stream);

23
llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
View File

@ -40,6 +40,8 @@ static bool CompareByFrequency(const std::pair<const llvm::Type*,
/// ValueEnumerator - Enumerate module-level information.
ValueEnumerator::ValueEnumerator(const Module *M) {
InstructionCount = 0;
// Enumerate the global variables.
for (Module::const_global_iterator I = M->global_begin(),
E = M->global_end(); I != E; ++I)
@ -83,7 +85,8 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
I != E; ++I)
EnumerateType(I->getType());
Metadata &TheMetadata = F->getContext().getMetadata();
for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB)
for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){
for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
@ -94,6 +97,14 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
EnumerateAttributes(CI->getAttributes());
else if (const InvokeInst *II = dyn_cast<InvokeInst>(I))
EnumerateAttributes(II->getAttributes());
// Enumerate metadata attached with this instruction.
const Metadata::MDMapTy *MDs = TheMetadata.getMDs(I);
if (MDs)
for (Metadata::MDMapTy::const_iterator MI = MDs->begin(),
ME = MDs->end(); MI != ME; ++MI)
if (MDNode *MDN = dyn_cast_or_null<MDNode>(MI->second))
EnumerateMetadata(MDN);
}
}
@ -114,6 +125,16 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
TypeMap[Types[i].first] = i+1;
}
unsigned ValueEnumerator::getInstructionID(const Instruction *Inst) const {
InstructionMapType::const_iterator I = InstructionMap.find(Inst);
assert (I != InstructionMap.end() && "Instruction is not mapped!");
return I->second;
}
void ValueEnumerator::setInstructionID(const Instruction *I) {
InstructionMap[I] = InstructionCount++;
}
unsigned ValueEnumerator::getValueID(const Value *V) const {
if (isa<MetadataBase>(V)) {
ValueMapType::const_iterator I = MDValueMap.find(V);

12
llvm/lib/Bitcode/Writer/ValueEnumerator.h
View File

@ -22,6 +22,7 @@ namespace llvm {
class Type;
class Value;
class Instruction;
class BasicBlock;
class Function;
class Module;
@ -47,11 +48,15 @@ private:
ValueList Values;
ValueList MDValues;
ValueMapType MDValueMap;
typedef DenseMap<void*, unsigned> AttributeMapType;
AttributeMapType AttributeMap;
std::vector<AttrListPtr> Attributes;
typedef DenseMap<const Instruction*, unsigned> InstructionMapType;
InstructionMapType InstructionMap;
unsigned InstructionCount;
/// BasicBlocks - This contains all the basic blocks for the currently
/// incorporated function. Their reverse mapping is stored in ValueMap.
std::vector<const BasicBlock*> BasicBlocks;
@ -74,7 +79,10 @@ public:
assert(I != TypeMap.end() && "Type not in ValueEnumerator!");
return I->second-1;
}
unsigned getInstructionID(const Instruction *I) const;
void setInstructionID(const Instruction *I);
unsigned getAttributeID(const AttrListPtr &PAL) const {
if (PAL.isEmpty()) return 0; // Null maps to zero.
AttributeMapType::const_iterator I = AttributeMap.find(PAL.getRawPointer());

6
llvm/lib/VMCore/Metadata.cpp
View File

@ -317,6 +317,12 @@ const Metadata::MDMapTy *Metadata::getMDs(const Instruction *Inst) {
return &(I->second);
}
/// getHandlerNames - Get handler names. This is used by bitcode
/// writer.
const StringMap<unsigned> *Metadata::getHandlerNames() {
return &MDHandlerNames;
}
/// ValueIsDeleted - This handler is used to update metadata store
/// when a value is deleted.
void Metadata::ValueIsDeleted(const Instruction *Inst) {

22
llvm/test/Feature/md_on_instruction2.ll Normal file
View File

@ -0,0 +1,22 @@
; RUN: llvm-as < %s | llvm-dis | grep " dbg " | count 4
define i32 @foo() nounwind ssp {
entry:
%retval = alloca i32 ; <i32*> [#uses=2]
call void @llvm.dbg.func.start(metadata !0)
store i32 42, i32* %retval, dbg !3
br label %0, dbg !3
; <label>:0 ; preds = %entry
call void @llvm.dbg.region.end(metadata !0)
%1 = load i32* %retval, dbg !3 ; <i32> [#uses=1]
ret i32 %1, dbg !3
}
declare void @llvm.dbg.func.start(metadata) nounwind readnone
declare void @llvm.dbg.region.end(metadata) nounwind readnone
!0 = metadata !{i32 458798, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 1, metadata !2, i1 false, i1 true}
!1 = metadata !{i32 458769, i32 0, i32 12, metadata !"foo.c", metadata !"/tmp", metadata !"clang 1.0", i1 true, i1 false, metadata !"", i32 0}
!2 = metadata !{i32 458788, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5}
!3 = metadata !{i32 1, i32 13, metadata !1, metadata !1}

25
llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
View File

@ -92,15 +92,16 @@ static const char *GetBlockName(unsigned BlockID,
if (CurStreamType != LLVMIRBitstream) return 0;
switch (BlockID) {
default: return 0;
case bitc::MODULE_BLOCK_ID: return "MODULE_BLOCK";
case bitc::PARAMATTR_BLOCK_ID: return "PARAMATTR_BLOCK";
case bitc::TYPE_BLOCK_ID: return "TYPE_BLOCK";
case bitc::CONSTANTS_BLOCK_ID: return "CONSTANTS_BLOCK";
case bitc::FUNCTION_BLOCK_ID: return "FUNCTION_BLOCK";
case bitc::TYPE_SYMTAB_BLOCK_ID: return "TYPE_SYMTAB";
case bitc::VALUE_SYMTAB_BLOCK_ID: return "VALUE_SYMTAB";
case bitc::METADATA_BLOCK_ID: return "METADATA_BLOCK";
default: return 0;
case bitc::MODULE_BLOCK_ID: return "MODULE_BLOCK";
case bitc::PARAMATTR_BLOCK_ID: return "PARAMATTR_BLOCK";
case bitc::TYPE_BLOCK_ID: return "TYPE_BLOCK";
case bitc::CONSTANTS_BLOCK_ID: return "CONSTANTS_BLOCK";
case bitc::FUNCTION_BLOCK_ID: return "FUNCTION_BLOCK";
case bitc::TYPE_SYMTAB_BLOCK_ID: return "TYPE_SYMTAB";
case bitc::VALUE_SYMTAB_BLOCK_ID: return "VALUE_SYMTAB";
case bitc::METADATA_BLOCK_ID: return "METADATA_BLOCK";
case bitc::METADATA_ATTACHMENT_ID: return "METADATA_ATTACHMENT_BLOCK";
}
}
@ -245,6 +246,11 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
case bitc::VST_CODE_ENTRY: return "ENTRY";
case bitc::VST_CODE_BBENTRY: return "BBENTRY";
}
case bitc::METADATA_ATTACHMENT_ID:
switch(CodeID) {
default:return 0;
case bitc::METADATA_ATTACHMENT: return "METADATA_ATTACHMENT";
}
case bitc::METADATA_BLOCK_ID:
switch(CodeID) {
default:return 0;
@ -252,6 +258,7 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
case bitc::METADATA_NODE: return "MDNODE";
case bitc::METADATA_NAME: return "METADATA_NAME";
case bitc::METADATA_NAMED_NODE: return "NAMEDMDNODE";
case bitc::METADATA_KIND: return "METADATA_KIND";
}
}
}