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80-column violation + trailing whitespace. 

llvm-svn: 65936
This commit is contained in:
Mikhail Glushenkov 2009-03-03 07:22:23 +00:00
parent 4735374e39
commit 766d48947a
1 changed files with 59 additions and 59 deletions
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118
llvm/lib/Linker/LinkModules.cpp
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@ -1,4 +1,4 @@
//===- lib/Linker/LinkModules.cpp - Module Linker Implementation ----------===//
//===- lib/Linker/LinkModules.cpp - Module Linker Implementation ---------===//
//
// The LLVM Compiler Infrastructure
//
@ -75,7 +75,7 @@ namespace {
class LinkerTypeMap : public AbstractTypeUser {
typedef DenseMap<const Type*, PATypeHolder> TheMapTy;
TheMapTy TheMap;
LinkerTypeMap(const LinkerTypeMap&); // DO NOT IMPLEMENT
void operator=(const LinkerTypeMap&); // DO NOT IMPLEMENT
public:
@ -85,7 +85,7 @@ public:
E = TheMap.end(); I != E; ++I)
I->first->removeAbstractTypeUser(this);
}
/// lookup - Return the value for the specified type or null if it doesn't
/// exist.
const Type *lookup(const Type *Ty) const {
@ -93,7 +93,7 @@ public:
if (I != TheMap.end()) return I->second;
return 0;
}
/// erase - Remove the specified type, returning true if it was in the set.
bool erase(const Type *Ty) {
if (!TheMap.erase(Ty))
@ -102,7 +102,7 @@ public:
Ty->removeAbstractTypeUser(this);
return true;
}
/// insert - This returns true if the pointer was new to the set, false if it
/// was already in the set.
bool insert(const Type *Src, const Type *Dst) {
@ -112,7 +112,7 @@ public:
Src->addAbstractTypeUser(this);
return true;
}
protected:
/// refineAbstractType - The callback method invoked when an abstract type is
/// resolved to another type. An object must override this method to update
@ -122,7 +122,7 @@ protected:
const Type *NewTy) {
TheMapTy::iterator I = TheMap.find(OldTy);
const Type *DstTy = I->second;
TheMap.erase(I);
if (OldTy->isAbstract())
OldTy->removeAbstractTypeUser(this);
@ -131,7 +131,7 @@ protected:
if (NewTy->isAbstract())
insert(NewTy, DstTy);
}
/// The other case which AbstractTypeUsers must be aware of is when a type
/// makes the transition from being abstract (where it has clients on it's
/// AbstractTypeUsers list) to concrete (where it does not). This method
@ -140,7 +140,7 @@ protected:
TheMap.erase(AbsTy);
AbsTy->removeAbstractTypeUser(this);
}
// for debugging...
virtual void dump() const {
cerr << "AbstractTypeSet!\n";
@ -167,7 +167,7 @@ static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
// If neither type is abstract, then they really are just different types.
if (!DstTy->isAbstract() && !SrcTy->isAbstract())
return true;
// Otherwise, resolve the used type used by this derived type...
switch (DstTy->getTypeID()) {
default:
@ -178,7 +178,7 @@ static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
if (DstFT->isVarArg() != SrcFT->isVarArg() ||
DstFT->getNumContainedTypes() != SrcFT->getNumContainedTypes())
return true;
// Use TypeHolder's so recursive resolution won't break us.
PATypeHolder ST(SrcFT), DT(DstFT);
for (unsigned i = 0, e = DstFT->getNumContainedTypes(); i != e; ++i) {
@ -193,7 +193,7 @@ static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
const StructType *SrcST = cast<StructType>(SrcTy);
if (DstST->getNumContainedTypes() != SrcST->getNumContainedTypes())
return true;
PATypeHolder ST(SrcST), DT(DstST);
for (unsigned i = 0, e = DstST->getNumContainedTypes(); i != e; ++i) {
const Type *SE = ST->getContainedType(i), *DE = DT->getContainedType(i);
@ -219,10 +219,10 @@ static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
case Type::PointerTyID: {
const PointerType *DstPT = cast<PointerType>(DstTy);
const PointerType *SrcPT = cast<PointerType>(SrcTy);
if (DstPT->getAddressSpace() != SrcPT->getAddressSpace())
return true;
// If this is a pointer type, check to see if we have already seen it. If
// so, we are in a recursive branch. Cut off the search now. We cannot use
// an associative container for this search, because the type pointers (keys
@ -230,7 +230,7 @@ static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
if (SrcPT->isAbstract())
if (const Type *ExistingDestTy = Pointers.lookup(SrcPT))
return ExistingDestTy != DstPT;
if (DstPT->isAbstract())
if (const Type *ExistingSrcTy = Pointers.lookup(DstPT))
return ExistingSrcTy != SrcPT;
@ -240,7 +240,7 @@ static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
Pointers.insert(DstPT, SrcPT);
if (SrcPT->isAbstract())
Pointers.insert(SrcPT, DstPT);
return RecursiveResolveTypesI(DstPT->getElementType(),
SrcPT->getElementType(), Pointers);
}
@ -350,7 +350,7 @@ static void PrintMap(const std::map<const Value*, Value*> &M) {
static Value *RemapOperand(const Value *In,
std::map<const Value*, Value*> &ValueMap) {
std::map<const Value*,Value*>::const_iterator I = ValueMap.find(In);
if (I != ValueMap.end())
if (I != ValueMap.end())
return I->second;
// Check to see if it's a constant that we are interested in transforming.
@ -389,13 +389,13 @@ static Value *RemapOperand(const Value *In,
} else if (isa<InlineAsm>(In)) {
Result = const_cast<Value*>(In);
}
// Cache the mapping in our local map structure
if (Result) {
ValueMap[In] = Result;
return Result;
}
#ifndef NDEBUG
cerr << "LinkModules ValueMap: \n";
PrintMap(ValueMap);
@ -426,7 +426,7 @@ static void ForceRenaming(GlobalValue *GV, const std::string &Name) {
}
/// CopyGVAttributes - copy additional attributes (those not needed to construct
/// a GlobalValue) from the SrcGV to the DestGV.
/// a GlobalValue) from the SrcGV to the DestGV.
static void CopyGVAttributes(GlobalValue *DestGV, const GlobalValue *SrcGV) {
// Use the maximum alignment, rather than just copying the alignment of SrcGV.
unsigned Alignment = std::max(DestGV->getAlignment(), SrcGV->getAlignment());
@ -458,7 +458,7 @@ static bool GetLinkageResult(GlobalValue *Dest, const GlobalValue *Src,
if (Dest->isDeclaration()) {
LinkFromSrc = true;
LT = Src->getLinkage();
}
}
} else if (Dest->hasExternalWeakLinkage()) {
//If the Dest is weak, use the source linkage
LinkFromSrc = true;
@ -527,7 +527,7 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
std::multimap<std::string, GlobalVariable *> &AppendingVars,
std::string *Err) {
ValueSymbolTable &DestSymTab = Dest->getValueSymbolTable();
// Loop over all of the globals in the src module, mapping them over as we go
for (Module::const_global_iterator I = Src->global_begin(),
E = Src->global_end(); I != E; ++I) {
@ -539,12 +539,12 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
if (SGV->hasName() && !SGV->hasLocalLinkage())
DGV = cast_or_null<GlobalValue>(DestSymTab.lookup(SGV->getNameStart(),
SGV->getNameEnd()));
// If we found a global with the same name in the dest module, but it has
// internal linkage, we are really not doing any linkage here.
if (DGV && DGV->hasLocalLinkage())
DGV = 0;
// If types don't agree due to opaque types, try to resolve them.
if (DGV && DGV->getType() != SGV->getType())
RecursiveResolveTypes(SGV->getType(), DGV->getType());
@ -584,12 +584,12 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
AppendingVars.insert(std::make_pair(SGV->getName(), NewDGV));
continue;
}
// If the visibilities of the symbols disagree and the destination is a
// prototype, take the visibility of its input.
if (DGV->isDeclaration())
DGV->setVisibility(SGV->getVisibility());
if (DGV->hasAppendingLinkage()) {
// No linking is performed yet. Just insert a new copy of the global, and
// keep track of the fact that it is an appending variable in the
@ -613,12 +613,12 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
AppendingVars.insert(std::make_pair(SGV->getName(), NewDGV));
continue;
}
if (LinkFromSrc) {
if (isa<GlobalAlias>(DGV))
return Error(Err, "Global-Alias Collision on '" + SGV->getName() +
"': symbol multiple defined");
// If the types don't match, and if we are to link from the source, nuke
// DGV and create a new one of the appropriate type. Note that the thing
// we are replacing may be a function (if a prototype, weak, etc) or a
@ -627,11 +627,11 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
new GlobalVariable(SGV->getType()->getElementType(), SGV->isConstant(),
NewLinkage, /*init*/0, DGV->getName(), Dest, false,
SGV->getType()->getAddressSpace());
// Propagate alignment, section, and visibility info.
CopyGVAttributes(NewDGV, SGV);
DGV->replaceAllUsesWith(ConstantExpr::getBitCast(NewDGV, DGV->getType()));
// DGV will conflict with NewDGV because they both had the same
// name. We must erase this now so ForceRenaming doesn't assert
// because DGV might not have internal linkage.
@ -645,18 +645,18 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
// symbol, DGV must be an existing global with internal linkage. Rename.
if (NewDGV->getName() != SGV->getName() && !NewDGV->hasLocalLinkage())
ForceRenaming(NewDGV, SGV->getName());
// Inherit const as appropriate.
NewDGV->setConstant(SGV->isConstant());
// Make sure to remember this mapping.
ValueMap[SGV] = NewDGV;
continue;
}
// Not "link from source", keep the one in the DestModule and remap the
// input onto it.
// Special case for const propagation.
if (GlobalVariable *DGVar = dyn_cast<GlobalVariable>(DGV))
if (DGVar->isDeclaration() && SGV->isConstant() && !DGVar->isConstant())
@ -671,10 +671,10 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
return Error(Err, "Global-Alias Collision on '" + SGV->getName() +
"': symbol multiple defined");
}
// Set calculated linkage
DGV->setLinkage(NewLinkage);
// Make sure to remember this mapping...
ValueMap[SGV] = ConstantExpr::getBitCast(DGV, SGV->getType());
}
@ -906,18 +906,18 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
std::map<const Value*, Value*> &ValueMap,
std::string *Err) {
ValueSymbolTable &DestSymTab = Dest->getValueSymbolTable();
// Loop over all of the functions in the src module, mapping them over
for (Module::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
const Function *SF = I; // SrcFunction
GlobalValue *DGV = 0;
// Check to see if may have to link the function with the global, alias or
// function.
if (SF->hasName() && !SF->hasLocalLinkage())
DGV = cast_or_null<GlobalValue>(DestSymTab.lookup(SF->getNameStart(),
SF->getNameEnd()));
// If we found a global with the same name in the dest module, but it has
// internal linkage, we are really not doing any linkage here.
if (DGV && DGV->hasLocalLinkage())
@ -931,7 +931,7 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
bool LinkFromSrc = false;
if (GetLinkageResult(DGV, SF, NewLinkage, LinkFromSrc, Err))
return true;
// If there is no linkage to be performed, just bring over SF without
// modifying it.
if (DGV == 0) {
@ -941,61 +941,61 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
SF->getLinkage(),
SF->getName(), Dest);
CopyGVAttributes(NewDF, SF);
// If the LLVM runtime renamed the function, but it is an externally
// visible symbol, DF must be an existing function with internal linkage.
// Rename it.
if (!NewDF->hasLocalLinkage() && NewDF->getName() != SF->getName())
ForceRenaming(NewDF, SF->getName());
// ... and remember this mapping...
ValueMap[SF] = NewDF;
continue;
}
// If the visibilities of the symbols disagree and the destination is a
// prototype, take the visibility of its input.
if (DGV->isDeclaration())
DGV->setVisibility(SF->getVisibility());
if (LinkFromSrc) {
if (isa<GlobalAlias>(DGV))
return Error(Err, "Function-Alias Collision on '" + SF->getName() +
"': symbol multiple defined");
// We have a definition of the same name but different type in the
// source module. Copy the prototype to the destination and replace
// uses of the destination's prototype with the new prototype.
Function *NewDF = Function::Create(SF->getFunctionType(), NewLinkage,
SF->getName(), Dest);
CopyGVAttributes(NewDF, SF);
// Any uses of DF need to change to NewDF, with cast
DGV->replaceAllUsesWith(ConstantExpr::getBitCast(NewDF, DGV->getType()));
// DF will conflict with NewDF because they both had the same. We must
// erase this now so ForceRenaming doesn't assert because DF might
// not have internal linkage.
// not have internal linkage.
if (GlobalVariable *Var = dyn_cast<GlobalVariable>(DGV))
Var->eraseFromParent();
else
cast<Function>(DGV)->eraseFromParent();
// If the symbol table renamed the function, but it is an externally
// visible symbol, DF must be an existing function with internal
// visible symbol, DF must be an existing function with internal
// linkage. Rename it.
if (NewDF->getName() != SF->getName() && !NewDF->hasLocalLinkage())
ForceRenaming(NewDF, SF->getName());
// Remember this mapping so uses in the source module get remapped
// later by RemapOperand.
ValueMap[SF] = NewDF;
continue;
}
// Not "link from source", keep the one in the DestModule and remap the
// input onto it.
if (isa<GlobalAlias>(DGV)) {
// The only valid mappings are:
// - SF is external declaration, which is effectively a no-op.
@ -1122,12 +1122,12 @@ static bool LinkAppendingVars(Module *M,
if (G1->getSection() != G2->getSection())
return Error(ErrorMsg,
"Appending variables with different section name need to be linked!");
unsigned NewSize = T1->getNumElements() + T2->getNumElements();
ArrayType *NewType = ArrayType::get(T1->getElementType(), NewSize);
G1->setName(""); // Clear G1's name in case of a conflict!
// Create the new global variable...
GlobalVariable *NG =
new GlobalVariable(NewType, G1->isConstant(), G1->getLinkage(),
@ -1228,7 +1228,7 @@ Linker::LinkModules(Module *Dest, Module *Src, std::string *ErrorMsg) {
// Copy the target triple from the source to dest if the dest's is empty.
if (Dest->getTargetTriple().empty() && !Src->getTargetTriple().empty())
Dest->setTargetTriple(Src->getTargetTriple());
if (!Src->getDataLayout().empty() && !Dest->getDataLayout().empty() &&
Src->getDataLayout() != Dest->getDataLayout())
cerr << "WARNING: Linking two modules of different data layouts!\n";
@ -1244,18 +1244,18 @@ Linker::LinkModules(Module *Dest, Module *Src, std::string *ErrorMsg) {
Dest->setModuleInlineAsm(Dest->getModuleInlineAsm()+"\n"+
Src->getModuleInlineAsm());
}
// Update the destination module's dependent libraries list with the libraries
// from the source module. There's no opportunity for duplicates here as the
// Module ensures that duplicate insertions are discarded.
for (Module::lib_iterator SI = Src->lib_begin(), SE = Src->lib_end();
SI != SE; ++SI)
SI != SE; ++SI)
Dest->addLibrary(*SI);
// LinkTypes - Go through the symbol table of the Src module and see if any
// types are named in the src module that are not named in the Dst module.
// Make sure there are no type name conflicts.
if (LinkTypes(Dest, Src, ErrorMsg))
if (LinkTypes(Dest, Src, ErrorMsg))
return true;
// ValueMap - Mapping of values from what they used to be in Src, to what they