From d5ac40457b62f37f0abfb1d61064f7c7300e91ee Mon Sep 17 00:00:00 2001 From: Devang Patel Date: Tue, 4 Aug 2009 06:00:18 +0000 Subject: [PATCH] Use separate ValueList for metadata. This fixes PR4666. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78056 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Bitcode/Reader/BitcodeReader.cpp | 50 +++++++++++++-- lib/Bitcode/Reader/BitcodeReader.h | 43 ++++++++++++- lib/Bitcode/Writer/BitcodeWriter.cpp | 4 +- lib/Bitcode/Writer/ValueEnumerator.cpp | 81 ++++++++++++++++-------- lib/Bitcode/Writer/ValueEnumerator.h | 15 ++--- test/Bitcode/metadata-2.ll | 87 ++++++++++++++++++++++++++ test/Bitcode/metadata.ll | 6 ++ 7 files changed, 242 insertions(+), 44 deletions(-) create mode 100644 test/Bitcode/metadata-2.ll create mode 100644 test/Bitcode/metadata.ll diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp index 81fdbd29afb..4ad97b12d62 100644 --- a/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/lib/Bitcode/Reader/BitcodeReader.cpp @@ -34,6 +34,7 @@ void BitcodeReader::FreeState() { Buffer = 0; std::vector().swap(TypeList); ValueList.clear(); + MDValueList.clear(); std::vector().swap(MAttributes); std::vector().swap(FunctionBBs); @@ -312,6 +313,41 @@ void BitcodeReaderValueList::ResolveConstantForwardRefs() { } } +void BitcodeReaderMDValueList::AssignValue(Value *V, unsigned Idx) { + if (Idx == size()) { + push_back(V); + return; + } + + if (Idx >= size()) + resize(Idx+1); + + WeakVH &OldV = MDValuePtrs[Idx]; + if (OldV == 0) { + OldV = V; + return; + } + + // If there was a forward reference to this value, replace it. + Value *PrevVal = OldV; + OldV->replaceAllUsesWith(V); + delete PrevVal; +} + +Value *BitcodeReaderMDValueList::getValueFwdRef(unsigned Idx) { + if (Idx >= size()) + resize(Idx + 1); + + if (Value *V = MDValuePtrs[Idx]) { + assert(V->getType() == Type::MetadataTy && "Type mismatch in value table!"); + return V; + } + + // Create and return a placeholder, which will later be RAUW'd. + Value *V = new Argument(Type::MetadataTy); + MDValuePtrs[Idx] = V; + return V; +} const Type *BitcodeReader::getTypeByID(unsigned ID, bool isTypeTable) { // If the TypeID is in range, return it. @@ -700,7 +736,7 @@ bool BitcodeReader::ParseValueSymbolTable() { } bool BitcodeReader::ParseMetadata() { - unsigned NextValueNo = ValueList.size(); + unsigned NextValueNo = MDValueList.size(); if (Stream.EnterSubBlock(bitc::METADATA_BLOCK_ID)) return Error("Malformed block record"); @@ -752,13 +788,13 @@ bool BitcodeReader::ParseMetadata() { unsigned Size = Record.size(); SmallVector Elts; for (unsigned i = 0; i != Size; ++i) { - Value *MD = ValueList.getValueFwdRef(Record[i], Type::MetadataTy); + Value *MD = MDValueList.getValueFwdRef(Record[i]); if (MetadataBase *B = dyn_cast(MD)) Elts.push_back(B); } Value *V = NamedMDNode::Create(Name.c_str(), Elts.data(), Elts.size(), TheModule); - ValueList.AssignValue(V, NextValueNo++); + MDValueList.AssignValue(V, NextValueNo++); break; } case bitc::METADATA_NODE: { @@ -769,13 +805,15 @@ bool BitcodeReader::ParseMetadata() { SmallVector Elts; for (unsigned i = 0; i != Size; i += 2) { const Type *Ty = getTypeByID(Record[i], false); - if (Ty != Type::VoidTy) + if (Ty == Type::MetadataTy) + Elts.push_back(MDValueList.getValueFwdRef(Record[i+1])); + else if (Ty != Type::VoidTy) Elts.push_back(ValueList.getValueFwdRef(Record[i+1], Ty)); else Elts.push_back(NULL); } Value *V = MDNode::get(Context, &Elts[0], Elts.size()); - ValueList.AssignValue(V, NextValueNo++); + MDValueList.AssignValue(V, NextValueNo++); break; } case bitc::METADATA_STRING: { @@ -786,7 +824,7 @@ bool BitcodeReader::ParseMetadata() { String[i] = Record[i]; Value *V = MDString::get(Context, StringRef(String.data(), String.size())); - ValueList.AssignValue(V, NextValueNo++); + MDValueList.AssignValue(V, NextValueNo++); break; } } diff --git a/lib/Bitcode/Reader/BitcodeReader.h b/lib/Bitcode/Reader/BitcodeReader.h index 77dabdee2dc..bd048885a65 100644 --- a/lib/Bitcode/Reader/BitcodeReader.h +++ b/lib/Bitcode/Reader/BitcodeReader.h @@ -86,6 +86,41 @@ public: void ResolveConstantForwardRefs(); }; + +//===----------------------------------------------------------------------===// +// BitcodeReaderMDValueList Class +//===----------------------------------------------------------------------===// + +class BitcodeReaderMDValueList { + std::vector MDValuePtrs; + + LLVMContext& Context; +public: + BitcodeReaderMDValueList(LLVMContext& C) : Context(C) {} + + // vector compatibility methods + unsigned size() const { return MDValuePtrs.size(); } + void resize(unsigned N) { MDValuePtrs.resize(N); } + void push_back(Value *V) { MDValuePtrs.push_back(V); } + void clear() { MDValuePtrs.clear(); } + Value *back() const { return MDValuePtrs.back(); } + void pop_back() { MDValuePtrs.pop_back(); } + bool empty() const { return MDValuePtrs.empty(); } + + Value *operator[](unsigned i) const { + assert(i < MDValuePtrs.size()); + return MDValuePtrs[i]; + } + + void shrinkTo(unsigned N) { + assert(N <= size() && "Invalid shrinkTo request!"); + MDValuePtrs.resize(N); + } + + Value *getValueFwdRef(unsigned Idx); + void AssignValue(Value *V, unsigned Idx); +}; + class BitcodeReader : public ModuleProvider { LLVMContext& Context; MemoryBuffer *Buffer; @@ -96,6 +131,7 @@ class BitcodeReader : public ModuleProvider { std::vector TypeList; BitcodeReaderValueList ValueList; + BitcodeReaderMDValueList MDValueList; std::vector > GlobalInits; std::vector > AliasInits; @@ -127,7 +163,7 @@ class BitcodeReader : public ModuleProvider { DenseMap > DeferredFunctionInfo; public: explicit BitcodeReader(MemoryBuffer *buffer, LLVMContext& C) - : Context(C), Buffer(buffer), ErrorString(0), ValueList(C) { + : Context(C), Buffer(buffer), ErrorString(0), ValueList(C), MDValueList(C) { HasReversedFunctionsWithBodies = false; } ~BitcodeReader() { @@ -160,7 +196,10 @@ public: private: const Type *getTypeByID(unsigned ID, bool isTypeTable = false); Value *getFnValueByID(unsigned ID, const Type *Ty) { - return ValueList.getValueFwdRef(ID, Ty); + if (Ty == Type::MetadataTy) + return MDValueList.getValueFwdRef(ID); + else + return ValueList.getValueFwdRef(ID, Ty); } BasicBlock *getBasicBlock(unsigned ID) const { if (ID >= FunctionBBs.size()) return 0; // Invalid ID diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp index 6bd40ba0e5b..a5c28fcc763 100644 --- a/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -492,7 +492,7 @@ static void WriteMDNode(const MDNode *N, static void WriteModuleMetadata(const ValueEnumerator &VE, BitstreamWriter &Stream) { - const ValueEnumerator::ValueList &Vals = VE.getValues(); + const ValueEnumerator::ValueList &Vals = VE.getMDValues(); bool StartedMetadataBlock = false; unsigned MDSAbbrev = 0; SmallVector Record; @@ -601,8 +601,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal, const Type *LastTy = 0; for (unsigned i = FirstVal; i != LastVal; ++i) { const Value *V = Vals[i].first; - if (isa(V)) - continue; // If we need to switch types, do so now. if (V->getType() != LastTy) { LastTy = V->getType(); diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp index 7583bb96c9e..4712dea7629 100644 --- a/lib/Bitcode/Writer/ValueEnumerator.cpp +++ b/lib/Bitcode/Writer/ValueEnumerator.cpp @@ -114,6 +114,18 @@ ValueEnumerator::ValueEnumerator(const Module *M) { TypeMap[Types[i].first] = i+1; } +unsigned ValueEnumerator::getValueID(const Value *V) const { + if (isa(V)) { + ValueMapType::const_iterator I = MDValueMap.find(V); + assert(I != MDValueMap.end() && "Value not in slotcalculator!"); + return I->second-1; + } + + ValueMapType::const_iterator I = ValueMap.find(V); + assert(I != ValueMap.end() && "Value not in slotcalculator!"); + return I->second-1; +} + // Optimize constant ordering. namespace { struct CstSortPredicate { @@ -165,9 +177,51 @@ void ValueEnumerator::EnumerateValueSymbolTable(const ValueSymbolTable &VST) { EnumerateValue(VI->getValue()); } +void ValueEnumerator::EnumerateMetadata(const MetadataBase *MD) { + // Check to see if it's already in! + unsigned &MDValueID = MDValueMap[MD]; + if (MDValueID) { + // Increment use count. + MDValues[MDValueID-1].second++; + return; + } + + // Enumerate the type of this value. + EnumerateType(MD->getType()); + + if (const MDNode *N = dyn_cast(MD)) { + MDValues.push_back(std::make_pair(MD, 1U)); + MDValueMap[MD] = MDValues.size(); + MDValueID = MDValues.size(); + for (MDNode::const_elem_iterator I = N->elem_begin(), E = N->elem_end(); + I != E; ++I) { + if (*I) + EnumerateValue(*I); + else + EnumerateType(Type::VoidTy); + } + return; + } else if (const NamedMDNode *N = dyn_cast(MD)) { + for(NamedMDNode::const_elem_iterator I = N->elem_begin(), + E = N->elem_end(); I != E; ++I) { + MetadataBase *M = *I; + EnumerateValue(M); + } + MDValues.push_back(std::make_pair(MD, 1U)); + MDValueMap[MD] = Values.size(); + return; + } + + // Add the value. + MDValues.push_back(std::make_pair(MD, 1U)); + MDValueID = MDValues.size(); +} + void ValueEnumerator::EnumerateValue(const Value *V) { assert(V->getType() != Type::VoidTy && "Can't insert void values!"); - + if (const MetadataBase *MB = dyn_cast(V)) + return EnumerateMetadata(MB); + // Check to see if it's already in! unsigned &ValueID = ValueMap[V]; if (ValueID) { @@ -207,31 +261,6 @@ void ValueEnumerator::EnumerateValue(const Value *V) { } } - if (const MDNode *N = dyn_cast(V)) { - Values.push_back(std::make_pair(V, 1U)); - ValueMap[V] = Values.size(); - ValueID = Values.size(); - for (MDNode::const_elem_iterator I = N->elem_begin(), E = N->elem_end(); - I != E; ++I) { - if (*I) - EnumerateValue(*I); - else - EnumerateType(Type::VoidTy); - } - return; - } - - if (const NamedMDNode *N = dyn_cast(V)) { - for(NamedMDNode::const_elem_iterator I = N->elem_begin(), - E = N->elem_end(); I != E; ++I) { - MetadataBase *M = *I; - EnumerateValue(M); - } - Values.push_back(std::make_pair(V, 1U)); - ValueMap[V] = Values.size(); - return; - } - // Add the value. Values.push_back(std::make_pair(V, 1U)); ValueID = Values.size(); diff --git a/lib/Bitcode/Writer/ValueEnumerator.h b/lib/Bitcode/Writer/ValueEnumerator.h index 40eeabb2b6a..b5106f0809f 100644 --- a/lib/Bitcode/Writer/ValueEnumerator.h +++ b/lib/Bitcode/Writer/ValueEnumerator.h @@ -25,6 +25,7 @@ class Value; class BasicBlock; class Function; class Module; +class MetadataBase; class AttrListPtr; class TypeSymbolTable; class ValueSymbolTable; @@ -44,7 +45,9 @@ private: typedef DenseMap ValueMapType; ValueMapType ValueMap; ValueList Values; - + ValueList MDValues; + ValueMapType MDValueMap; + typedef DenseMap AttributeMapType; AttributeMapType AttributeMap; std::vector Attributes; @@ -64,12 +67,8 @@ private: public: ValueEnumerator(const Module *M); - unsigned getValueID(const Value *V) const { - ValueMapType::const_iterator I = ValueMap.find(V); - assert(I != ValueMap.end() && "Value not in slotcalculator!"); - return I->second-1; - } - + unsigned getValueID(const Value *V) const; + unsigned getTypeID(const Type *T) const { TypeMapType::const_iterator I = TypeMap.find(T); assert(I != TypeMap.end() && "Type not in ValueEnumerator!"); @@ -91,6 +90,7 @@ public: } const ValueList &getValues() const { return Values; } + const ValueList &getMDValues() const { return MDValues; } const TypeList &getTypes() const { return Types; } const std::vector &getBasicBlocks() const { return BasicBlocks; @@ -108,6 +108,7 @@ public: private: void OptimizeConstants(unsigned CstStart, unsigned CstEnd); + void EnumerateMetadata(const MetadataBase *MD); void EnumerateValue(const Value *V); void EnumerateType(const Type *T); void EnumerateOperandType(const Value *V); diff --git a/test/Bitcode/metadata-2.ll b/test/Bitcode/metadata-2.ll new file mode 100644 index 00000000000..cb2962bba24 --- /dev/null +++ b/test/Bitcode/metadata-2.ll @@ -0,0 +1,87 @@ +; RUN: llvm-as < %s | llvm-dis -f -o /dev/null + type { %object.ModuleInfo.__vtbl*, i8*, %"byte[]", %1, %"ClassInfo[]", i32, void ()*, void ()*, void ()*, i8*, void ()* } ; type %0 + type { i64, %object.ModuleInfo* } ; type %1 + type { i32, void ()* } ; type %2 + %"ClassInfo[]" = type { i64, %object.ClassInfo** } + %"Interface[]" = type { i64, %object.Interface* } + %"ModuleInfo[]" = type { i64, %object.ModuleInfo** } + %ModuleReference = type { %ModuleReference*, %object.ModuleInfo* } + %"OffsetTypeInfo[]" = type { i64, %object.OffsetTypeInfo* } + %"byte[]" = type { i64, i8* } + %object.ClassInfo = type { %object.ClassInfo.__vtbl*, i8*, %"byte[]", %"byte[]", %"void*[]", %"Interface[]", %object.ClassInfo*, i8*, i8*, i32, i8*, %"OffsetTypeInfo[]", i8*, %object.TypeInfo* } + %object.ClassInfo.__vtbl = type { %object.ClassInfo*, %"byte[]" (%object.Object*)*, i64 (%object.Object*)*, i32 (%object.Object*, %object.Object*)*, i32 (%object.Object*, %object.Object*)*, %object.Object* (%object.ClassInfo*)* } + %object.Interface = type { %object.ClassInfo*, %"void*[]", i64 } + %object.ModuleInfo = type { %object.ModuleInfo.__vtbl*, i8*, %"byte[]", %"ModuleInfo[]", %"ClassInfo[]", i32, void ()*, void ()*, void ()*, i8*, void ()* } + %object.ModuleInfo.__vtbl = type { %object.ClassInfo*, %"byte[]" (%object.Object*)*, i64 (%object.Object*)*, i32 (%object.Object*, %object.Object*)*, i32 (%object.Object*, %object.Object*)* } + %object.Object = type { %object.ModuleInfo.__vtbl*, i8* } + %object.OffsetTypeInfo = type { i64, %object.TypeInfo* } + %object.TypeInfo = type { %object.TypeInfo.__vtbl*, i8* } + %object.TypeInfo.__vtbl = type { %object.ClassInfo*, %"byte[]" (%object.Object*)*, i64 (%object.Object*)*, i32 (%object.Object*, %object.Object*)*, i32 (%object.Object*, %object.Object*)*, i64 (%object.TypeInfo*, i8*)*, i32 (%object.TypeInfo*, i8*, i8*)*, i32 (%object.TypeInfo*, i8*, i8*)*, i64 (%object.TypeInfo*)*, void (%object.TypeInfo*, i8*, i8*)*, %object.TypeInfo* (%object.TypeInfo*)*, %"byte[]" (%object.TypeInfo*)*, i32 (%object.TypeInfo*)*, %"OffsetTypeInfo[]" (%object.TypeInfo*)* } + %"void*[]" = type { i64, i8** } +@_D10ModuleInfo6__vtblZ = external constant %object.ModuleInfo.__vtbl ; <%object.ModuleInfo.__vtbl*> [#uses=1] +@.str = internal constant [20 x i8] c"tango.core.BitManip\00" ; <[20 x i8]*> [#uses=1] +@_D5tango4core8BitManip8__ModuleZ = global %0 { %object.ModuleInfo.__vtbl* @_D10ModuleInfo6__vtblZ, i8* null, %"byte[]" { i64 19, i8* getelementptr ([20 x i8]* @.str, i32 0, i32 0) }, %1 zeroinitializer, %"ClassInfo[]" zeroinitializer, i32 4, void ()* null, void ()* null, void ()* null, i8* null, void ()* null } ; <%0*> [#uses=1] +@_D5tango4core8BitManip11__moduleRefZ = internal global %ModuleReference { %ModuleReference* null, %object.ModuleInfo* bitcast (%0* @_D5tango4core8BitManip8__ModuleZ to %object.ModuleInfo*) } ; <%ModuleReference*> [#uses=2] +@_Dmodule_ref = external global %ModuleReference* ; <%ModuleReference**> [#uses=2] +@llvm.global_ctors = appending constant [1 x %2] [%2 { i32 65535, void ()* @_D5tango4core8BitManip16__moduleinfoCtorZ }] ; <[1 x %2]*> [#uses=0] + +define fastcc i32 @_D5tango4core8BitManip6popcntFkZi(i32 %x_arg) nounwind readnone { +entry: + %tmp1 = lshr i32 %x_arg, 1 ; [#uses=1] + %tmp2 = and i32 %tmp1, 1431655765 ; [#uses=1] + %tmp4 = sub i32 %x_arg, %tmp2 ; [#uses=2] + %tmp6 = lshr i32 %tmp4, 2 ; [#uses=1] + %tmp7 = and i32 %tmp6, 858993459 ; [#uses=1] + %tmp9 = and i32 %tmp4, 858993459 ; [#uses=1] + %tmp10 = add i32 %tmp7, %tmp9 ; [#uses=2] + %tmp12 = lshr i32 %tmp10, 4 ; [#uses=1] + %tmp14 = add i32 %tmp12, %tmp10 ; [#uses=1] + %tmp16 = and i32 %tmp14, 252645135 ; [#uses=2] + %tmp18 = lshr i32 %tmp16, 8 ; [#uses=1] + %tmp20 = add i32 %tmp18, %tmp16 ; [#uses=1] + %tmp22 = and i32 %tmp20, 16711935 ; [#uses=2] + %tmp24 = lshr i32 %tmp22, 16 ; [#uses=1] + %tmp26 = add i32 %tmp24, %tmp22 ; [#uses=1] + %tmp28 = and i32 %tmp26, 65535 ; [#uses=1] + ret i32 %tmp28 +} + +define fastcc i32 @_D5tango4core8BitManip7bitswapFkZk(i32 %x_arg) nounwind readnone { +entry: + %tmp1 = lshr i32 %x_arg, 1 ; [#uses=1] + %tmp2 = and i32 %tmp1, 1431655765 ; [#uses=1] + %tmp4 = shl i32 %x_arg, 1 ; [#uses=1] + %tmp5 = and i32 %tmp4, -1431655766 ; [#uses=1] + %tmp6 = or i32 %tmp2, %tmp5 ; [#uses=2] + %tmp8 = lshr i32 %tmp6, 2 ; [#uses=1] + %tmp9 = and i32 %tmp8, 858993459 ; [#uses=1] + %tmp11 = shl i32 %tmp6, 2 ; [#uses=1] + %tmp12 = and i32 %tmp11, -858993460 ; [#uses=1] + %tmp13 = or i32 %tmp9, %tmp12 ; [#uses=2] + %tmp15 = lshr i32 %tmp13, 4 ; [#uses=1] + %tmp16 = and i32 %tmp15, 252645135 ; [#uses=1] + %tmp18 = shl i32 %tmp13, 4 ; [#uses=1] + %tmp19 = and i32 %tmp18, -252645136 ; [#uses=1] + %tmp20 = or i32 %tmp16, %tmp19 ; [#uses=2] + %tmp22 = lshr i32 %tmp20, 8 ; [#uses=1] + %tmp23 = and i32 %tmp22, 16711935 ; [#uses=1] + %tmp25 = shl i32 %tmp20, 8 ; [#uses=1] + %tmp26 = and i32 %tmp25, -16711936 ; [#uses=1] + %tmp27 = or i32 %tmp23, %tmp26 ; [#uses=2] + %tmp29 = lshr i32 %tmp27, 16 ; [#uses=1] + %tmp31 = shl i32 %tmp27, 16 ; [#uses=1] + %tmp32 = or i32 %tmp29, %tmp31 ; [#uses=1] + ret i32 %tmp32 +} + +define internal void @_D5tango4core8BitManip16__moduleinfoCtorZ() nounwind { +moduleinfoCtorEntry: + %current = load %ModuleReference** @_Dmodule_ref ; <%ModuleReference*> [#uses=1] + store %ModuleReference* %current, %ModuleReference** getelementptr (%ModuleReference* @_D5tango4core8BitManip11__moduleRefZ, i32 0, i32 0) + store %ModuleReference* @_D5tango4core8BitManip11__moduleRefZ, %ModuleReference** @_Dmodule_ref + ret void +} +!llvm.ldc.classinfo._D6Object7__ClassZ = !{!0} +!llvm.ldc.classinfo._D10ModuleInfo7__ClassZ = !{!1} +!0 = metadata !{%object.Object undef, i1 false, i1 false} +!1 = metadata !{%object.ModuleInfo undef, i1 false, i1 false} diff --git a/test/Bitcode/metadata.ll b/test/Bitcode/metadata.ll new file mode 100644 index 00000000000..593cefa30b5 --- /dev/null +++ b/test/Bitcode/metadata.ll @@ -0,0 +1,6 @@ +; RUN: llvm-as < %s | llvm-dis -f -o /dev/null + +!llvm.foo = !{!0} +!0 = metadata !{i32 42} +@my.str = internal constant [4 x i8] c"foo\00" +