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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82355 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
2009-09-20 02:20:51 +00:00
parent 5511ffd763
commit a279bc3da5
19 changed files with 1234 additions and 1235 deletions
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79
lib/Bitcode/Writer/ValueEnumerator.cpp
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@ -57,10 +57,10 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
I != E; ++I)
EnumerateValue(I);
// Remember what is the cutoff between globalvalue's and other constants.
unsigned FirstConstant = Values.size();
// Enumerate the global variable initializers.
for (Module::const_global_iterator I = M->global_begin(),
E = M->global_end(); I != E; ++I)
@ -71,25 +71,25 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
I != E; ++I)
EnumerateValue(I->getAliasee());
// Enumerate types used by the type symbol table.
EnumerateTypeSymbolTable(M->getTypeSymbolTable());
// Insert constants that are named at module level into the slot pool so that
// the module symbol table can refer to them...
EnumerateValueSymbolTable(M->getValueSymbolTable());
// Enumerate types used by function bodies and argument lists.
for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) {
for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
I != E; ++I)
EnumerateType(I->getType());
Metadata &TheMetadata = F->getContext().getMetadata();
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();
for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
OI != E; ++OI)
EnumerateOperandType(*OI);
EnumerateType(I->getType());
@ -98,23 +98,23 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
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);
// 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);
}
}
// Optimize constant ordering.
OptimizeConstants(FirstConstant, Values.size());
// Sort the type table by frequency so that most commonly used types are early
// in the table (have low bit-width).
std::stable_sort(Types.begin(), Types.end(), CompareByFrequency);
// Partition the Type ID's so that the single-value types occur before the
// aggregate types. This allows the aggregate types to be dropped from the
// type table after parsing the global variable initializers.
@ -129,7 +129,7 @@ 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++;
@ -141,12 +141,12 @@ unsigned ValueEnumerator::getValueID(const Value *V) const {
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 {
@ -156,7 +156,7 @@ namespace {
const std::pair<const Value*, unsigned> &RHS) {
// Sort by plane.
if (LHS.first->getType() != RHS.first->getType())
return VE.getTypeID(LHS.first->getType()) <
return VE.getTypeID(LHS.first->getType()) <
VE.getTypeID(RHS.first->getType());
// Then by frequency.
return LHS.second > RHS.second;
@ -167,15 +167,15 @@ namespace {
/// OptimizeConstants - Reorder constant pool for denser encoding.
void ValueEnumerator::OptimizeConstants(unsigned CstStart, unsigned CstEnd) {
if (CstStart == CstEnd || CstStart+1 == CstEnd) return;
CstSortPredicate P(*this);
std::stable_sort(Values.begin()+CstStart, Values.begin()+CstEnd, P);
// Ensure that integer constants are at the start of the constant pool. This
// is important so that GEP structure indices come before gep constant exprs.
std::partition(Values.begin()+CstStart, Values.begin()+CstEnd,
isIntegerValue);
// Rebuild the modified portion of ValueMap.
for (; CstStart != CstEnd; ++CstStart)
ValueMap[Values[CstStart].first] = CstStart+1;
@ -185,7 +185,7 @@ void ValueEnumerator::OptimizeConstants(unsigned CstStart, unsigned CstEnd) {
/// EnumerateTypeSymbolTable - Insert all of the types in the specified symbol
/// table.
void ValueEnumerator::EnumerateTypeSymbolTable(const TypeSymbolTable &TST) {
for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end();
for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end();
TI != TE; ++TI)
EnumerateType(TI->second);
}
@ -193,7 +193,7 @@ void ValueEnumerator::EnumerateTypeSymbolTable(const TypeSymbolTable &TST) {
/// EnumerateValueSymbolTable - Insert all of the values in the specified symbol
/// table into the values table.
void ValueEnumerator::EnumerateValueSymbolTable(const ValueSymbolTable &VST) {
for (ValueSymbolTable::const_iterator VI = VST.begin(), VE = VST.end();
for (ValueSymbolTable::const_iterator VI = VST.begin(), VE = VST.end();
VI != VE; ++VI)
EnumerateValue(VI->getValue());
}
@ -254,7 +254,7 @@ void ValueEnumerator::EnumerateValue(const Value *V) {
// Enumerate the type of this value.
EnumerateType(V->getType());
if (const Constant *C = dyn_cast<Constant>(V)) {
if (isa<GlobalValue>(C)) {
// Initializers for globals are handled explicitly elsewhere.
@ -266,7 +266,7 @@ void ValueEnumerator::EnumerateValue(const Value *V) {
// If a constant has operands, enumerate them. This makes sure that if a
// constant has uses (for example an array of const ints), that they are
// inserted also.
// We prefer to enumerate them with values before we enumerate the user
// itself. This makes it more likely that we can avoid forward references
// in the reader. We know that there can be no cycles in the constants
@ -274,7 +274,7 @@ void ValueEnumerator::EnumerateValue(const Value *V) {
for (User::const_op_iterator I = C->op_begin(), E = C->op_end();
I != E; ++I)
EnumerateValue(*I);
// Finally, add the value. Doing this could make the ValueID reference be
// dangling, don't reuse it.
Values.push_back(std::make_pair(V, 1U));
@ -291,17 +291,17 @@ void ValueEnumerator::EnumerateValue(const Value *V) {
void ValueEnumerator::EnumerateType(const Type *Ty) {
unsigned &TypeID = TypeMap[Ty];
if (TypeID) {
// If we've already seen this type, just increase its occurrence count.
Types[TypeID-1].second++;
return;
}
// First time we saw this type, add it.
Types.push_back(std::make_pair(Ty, 1U));
TypeID = Types.size();
// Enumerate subtypes.
for (Type::subtype_iterator I = Ty->subtype_begin(), E = Ty->subtype_end();
I != E; ++I)
@ -347,18 +347,18 @@ void ValueEnumerator::EnumerateAttributes(const AttrListPtr &PAL) {
void ValueEnumerator::incorporateFunction(const Function &F) {
NumModuleValues = Values.size();
// Adding function arguments to the value table.
for(Function::const_arg_iterator I = F.arg_begin(), E = F.arg_end();
I != E; ++I)
EnumerateValue(I);
FirstFuncConstantID = Values.size();
// Add all function-level constants to the value table.
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();
for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
OI != E; ++OI) {
if ((isa<Constant>(*OI) && !isa<GlobalValue>(*OI)) ||
isa<InlineAsm>(*OI))
@ -367,16 +367,16 @@ void ValueEnumerator::incorporateFunction(const Function &F) {
BasicBlocks.push_back(BB);
ValueMap[BB] = BasicBlocks.size();
}
// Optimize the constant layout.
OptimizeConstants(FirstFuncConstantID, Values.size());
// Add the function's parameter attributes so they are available for use in
// the function's instruction.
EnumerateAttributes(F.getAttributes());
FirstInstID = Values.size();
// Add all of the instructions.
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) {
@ -392,8 +392,7 @@ void ValueEnumerator::purgeFunction() {
ValueMap.erase(Values[i].first);
for (unsigned i = 0, e = BasicBlocks.size(); i != e; ++i)
ValueMap.erase(BasicBlocks[i]);
Values.resize(NumModuleValues);
BasicBlocks.clear();
}