//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineModuleInfo.h"
-
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/Module.h"
+#include "llvm/ADT/PointerUnion.h"
+#include "llvm/ADT/TinyPtrVector.h"
+#include "llvm/Analysis/EHPersonalities.h"
#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Module.h"
+#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/ADT/PointerUnion.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
using namespace llvm::dwarf;
-// Handle the Pass registration stuff necessary to use TargetData's.
+// Handle the Pass registration stuff necessary to use DataLayout's.
INITIALIZE_PASS(MachineModuleInfo, "machinemoduleinfo",
"Machine Module Information", false, false)
char MachineModuleInfo::ID = 0;
MachineModuleInfoImpl::~MachineModuleInfoImpl() {}
namespace llvm {
-class MMIAddrLabelMapCallbackPtr : CallbackVH {
+class MMIAddrLabelMapCallbackPtr final : CallbackVH {
MMIAddrLabelMap *Map;
public:
- MMIAddrLabelMapCallbackPtr() : Map(0) {}
- MMIAddrLabelMapCallbackPtr(Value *V) : CallbackVH(V), Map(0) {}
+ MMIAddrLabelMapCallbackPtr() : Map(nullptr) {}
+ MMIAddrLabelMapCallbackPtr(Value *V) : CallbackVH(V), Map(nullptr) {}
void setPtr(BasicBlock *BB) {
ValueHandleBase::operator=(BB);
void setMap(MMIAddrLabelMap *map) { Map = map; }
- virtual void deleted();
- virtual void allUsesReplacedWith(Value *V2);
+ void deleted() override;
+ void allUsesReplacedWith(Value *V2) override;
};
class MMIAddrLabelMap {
MCContext &Context;
struct AddrLabelSymEntry {
- /// Symbols - The symbols for the label. This is a pointer union that is
- /// either one symbol (the common case) or a list of symbols.
- PointerUnion<MCSymbol *, std::vector<MCSymbol*>*> Symbols;
+ /// Symbols - The symbols for the label.
+ TinyPtrVector<MCSymbol *> Symbols;
Function *Fn; // The containing function of the BasicBlock.
unsigned Index; // The index in BBCallbacks for the BasicBlock.
~MMIAddrLabelMap() {
assert(DeletedAddrLabelsNeedingEmission.empty() &&
"Some labels for deleted blocks never got emitted");
-
- // Deallocate any of the 'list of symbols' case.
- for (DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry>::iterator
- I = AddrLabelSymbols.begin(), E = AddrLabelSymbols.end(); I != E; ++I)
- if (I->second.Symbols.is<std::vector<MCSymbol*>*>())
- delete I->second.Symbols.get<std::vector<MCSymbol*>*>();
}
- MCSymbol *getAddrLabelSymbol(BasicBlock *BB);
- std::vector<MCSymbol*> getAddrLabelSymbolToEmit(BasicBlock *BB);
+ ArrayRef<MCSymbol *> getAddrLabelSymbolToEmit(BasicBlock *BB);
void takeDeletedSymbolsForFunction(Function *F,
std::vector<MCSymbol*> &Result);
};
}
-MCSymbol *MMIAddrLabelMap::getAddrLabelSymbol(BasicBlock *BB) {
+ArrayRef<MCSymbol *> MMIAddrLabelMap::getAddrLabelSymbolToEmit(BasicBlock *BB) {
assert(BB->hasAddressTaken() &&
"Shouldn't get label for block without address taken");
AddrLabelSymEntry &Entry = AddrLabelSymbols[BB];
// If we already had an entry for this block, just return it.
- if (!Entry.Symbols.isNull()) {
+ if (!Entry.Symbols.empty()) {
assert(BB->getParent() == Entry.Fn && "Parent changed");
- if (Entry.Symbols.is<MCSymbol*>())
- return Entry.Symbols.get<MCSymbol*>();
- return (*Entry.Symbols.get<std::vector<MCSymbol*>*>())[0];
+ return Entry.Symbols;
}
// Otherwise, this is a new entry, create a new symbol for it and add an
// entry to BBCallbacks so we can be notified if the BB is deleted or RAUWd.
- BBCallbacks.push_back(BB);
+ BBCallbacks.emplace_back(BB);
BBCallbacks.back().setMap(this);
- Entry.Index = BBCallbacks.size()-1;
+ Entry.Index = BBCallbacks.size() - 1;
Entry.Fn = BB->getParent();
- MCSymbol *Result = Context.CreateTempSymbol();
- Entry.Symbols = Result;
- return Result;
+ Entry.Symbols.push_back(Context.createTempSymbol());
+ return Entry.Symbols;
}
-std::vector<MCSymbol*>
-MMIAddrLabelMap::getAddrLabelSymbolToEmit(BasicBlock *BB) {
- assert(BB->hasAddressTaken() &&
- "Shouldn't get label for block without address taken");
- AddrLabelSymEntry &Entry = AddrLabelSymbols[BB];
-
- std::vector<MCSymbol*> Result;
-
- // If we already had an entry for this block, just return it.
- if (Entry.Symbols.isNull())
- Result.push_back(getAddrLabelSymbol(BB));
- else if (MCSymbol *Sym = Entry.Symbols.dyn_cast<MCSymbol*>())
- Result.push_back(Sym);
- else
- Result = *Entry.Symbols.get<std::vector<MCSymbol*>*>();
- return Result;
-}
-
-
/// takeDeletedSymbolsForFunction - If we have any deleted symbols for F, return
/// them.
void MMIAddrLabelMap::
// If the block got deleted, there is no need for the symbol. If the symbol
// was already emitted, we can just forget about it, otherwise we need to
// queue it up for later emission when the function is output.
- AddrLabelSymEntry Entry = AddrLabelSymbols[BB];
+ AddrLabelSymEntry Entry = std::move(AddrLabelSymbols[BB]);
AddrLabelSymbols.erase(BB);
- assert(!Entry.Symbols.isNull() && "Didn't have a symbol, why a callback?");
- BBCallbacks[Entry.Index] = 0; // Clear the callback.
+ assert(!Entry.Symbols.empty() && "Didn't have a symbol, why a callback?");
+ BBCallbacks[Entry.Index] = nullptr; // Clear the callback.
- assert((BB->getParent() == 0 || BB->getParent() == Entry.Fn) &&
+ assert((BB->getParent() == nullptr || BB->getParent() == Entry.Fn) &&
"Block/parent mismatch");
- // Handle both the single and the multiple symbols cases.
- if (MCSymbol *Sym = Entry.Symbols.dyn_cast<MCSymbol*>()) {
+ for (MCSymbol *Sym : Entry.Symbols) {
if (Sym->isDefined())
return;
// for the containing Function. Since the block is being deleted, its
// parent may already be removed, we have to get the function from 'Entry'.
DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym);
- } else {
- std::vector<MCSymbol*> *Syms = Entry.Symbols.get<std::vector<MCSymbol*>*>();
-
- for (unsigned i = 0, e = Syms->size(); i != e; ++i) {
- MCSymbol *Sym = (*Syms)[i];
- if (Sym->isDefined()) continue; // Ignore already emitted labels.
-
- // If the block is not yet defined, we need to emit it at the end of the
- // function. Add the symbol to the DeletedAddrLabelsNeedingEmission list
- // for the containing Function. Since the block is being deleted, its
- // parent may already be removed, we have to get the function from
- // 'Entry'.
- DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym);
- }
-
- // The entry is deleted, free the memory associated with the symbol list.
- delete Syms;
}
}
void MMIAddrLabelMap::UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New) {
// Get the entry for the RAUW'd block and remove it from our map.
- AddrLabelSymEntry OldEntry = AddrLabelSymbols[Old];
+ AddrLabelSymEntry OldEntry = std::move(AddrLabelSymbols[Old]);
AddrLabelSymbols.erase(Old);
- assert(!OldEntry.Symbols.isNull() && "Didn't have a symbol, why a callback?");
+ assert(!OldEntry.Symbols.empty() && "Didn't have a symbol, why a callback?");
AddrLabelSymEntry &NewEntry = AddrLabelSymbols[New];
// If New is not address taken, just move our symbol over to it.
- if (NewEntry.Symbols.isNull()) {
+ if (NewEntry.Symbols.empty()) {
BBCallbacks[OldEntry.Index].setPtr(New); // Update the callback.
- NewEntry = OldEntry; // Set New's entry.
+ NewEntry = std::move(OldEntry); // Set New's entry.
return;
}
- BBCallbacks[OldEntry.Index] = 0; // Update the callback.
+ BBCallbacks[OldEntry.Index] = nullptr; // Update the callback.
- // Otherwise, we need to add the old symbol to the new block's set. If it is
- // just a single entry, upgrade it to a symbol list.
- if (MCSymbol *PrevSym = NewEntry.Symbols.dyn_cast<MCSymbol*>()) {
- std::vector<MCSymbol*> *SymList = new std::vector<MCSymbol*>();
- SymList->push_back(PrevSym);
- NewEntry.Symbols = SymList;
- }
-
- std::vector<MCSymbol*> *SymList =
- NewEntry.Symbols.get<std::vector<MCSymbol*>*>();
-
- // If the old entry was a single symbol, add it.
- if (MCSymbol *Sym = OldEntry.Symbols.dyn_cast<MCSymbol*>()) {
- SymList->push_back(Sym);
- return;
- }
-
- // Otherwise, concatenate the list.
- std::vector<MCSymbol*> *Syms =OldEntry.Symbols.get<std::vector<MCSymbol*>*>();
- SymList->insert(SymList->end(), Syms->begin(), Syms->end());
- delete Syms;
+ // Otherwise, we need to add the old symbols to the new block's set.
+ NewEntry.Symbols.insert(NewEntry.Symbols.end(), OldEntry.Symbols.begin(),
+ OldEntry.Symbols.end());
}
MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
const MCRegisterInfo &MRI,
- const TargetAsmInfo *TAI)
- : ImmutablePass(ID), Context(MAI, MRI, TAI),
- ObjFileMMI(0), CompactEncoding(0), CurCallSite(0), CallsEHReturn(0),
- CallsUnwindInit(0), DbgInfoAvailable(false),
- CallsExternalVAFunctionWithFloatingPointArguments(false) {
+ const MCObjectFileInfo *MOFI)
+ : ImmutablePass(ID), Context(&MAI, &MRI, MOFI, nullptr, false) {
initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
- // Always emit some info, by default "no personality" info.
- Personalities.push_back(NULL);
- AddrLabelSymbols = 0;
- TheModule = 0;
}
MachineModuleInfo::MachineModuleInfo()
- : ImmutablePass(ID), Context(*(MCAsmInfo*)0, *(MCRegisterInfo*)0, NULL) {
- assert(0 && "This MachineModuleInfo constructor should never be called, MMI "
- "should always be explicitly constructed by LLVMTargetMachine");
- abort();
+ : ImmutablePass(ID), Context(nullptr, nullptr, nullptr) {
+ llvm_unreachable("This MachineModuleInfo constructor should never be called, "
+ "MMI should always be explicitly constructed by "
+ "LLVMTargetMachine");
}
MachineModuleInfo::~MachineModuleInfo() {
- delete ObjFileMMI;
-
- // FIXME: Why isn't doFinalization being called??
- //assert(AddrLabelSymbols == 0 && "doFinalization not called");
- delete AddrLabelSymbols;
- AddrLabelSymbols = 0;
}
-/// doInitialization - Initialize the state for a new module.
-///
-bool MachineModuleInfo::doInitialization() {
- assert(AddrLabelSymbols == 0 && "Improperly initialized");
+bool MachineModuleInfo::doInitialization(Module &M) {
+
+ ObjFileMMI = nullptr;
+ CurCallSite = 0;
+ CallsEHReturn = false;
+ CallsUnwindInit = false;
+ HasEHFunclets = false;
+ DbgInfoAvailable = UsesVAFloatArgument = UsesMorestackAddr = false;
+ PersonalityTypeCache = EHPersonality::Unknown;
+ AddrLabelSymbols = nullptr;
+ TheModule = nullptr;
+
return false;
}
-/// doFinalization - Tear down the state after completion of a module.
-///
-bool MachineModuleInfo::doFinalization() {
+bool MachineModuleInfo::doFinalization(Module &M) {
+
+ Personalities.clear();
+
delete AddrLabelSymbols;
- AddrLabelSymbols = 0;
+ AddrLabelSymbols = nullptr;
+
+ Context.reset();
+
+ delete ObjFileMMI;
+ ObjFileMMI = nullptr;
+
return false;
}
///
void MachineModuleInfo::EndFunction() {
// Clean up frame info.
- FrameMoves.clear();
+ FrameInstructions.clear();
// Clean up exception info.
LandingPads.clear();
+ PersonalityTypeCache = EHPersonality::Unknown;
CallSiteMap.clear();
TypeInfos.clear();
FilterIds.clear();
FilterEnds.clear();
- CallsEHReturn = 0;
- CallsUnwindInit = 0;
- CompactEncoding = 0;
- VariableDbgInfo.clear();
-}
-
-/// AnalyzeModule - Scan the module for global debug information.
-///
-void MachineModuleInfo::AnalyzeModule(const Module &M) {
- // Insert functions in the llvm.used array (but not llvm.compiler.used) into
- // UsedFunctions.
- const GlobalVariable *GV = M.getGlobalVariable("llvm.used");
- if (!GV || !GV->hasInitializer()) return;
-
- // Should be an array of 'i8*'.
- const ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
- if (InitList == 0) return;
-
- for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
- if (const Function *F =
- dyn_cast<Function>(InitList->getOperand(i)->stripPointerCasts()))
- UsedFunctions.insert(F);
+ CallsEHReturn = false;
+ CallsUnwindInit = false;
+ HasEHFunclets = false;
+ VariableDbgInfos.clear();
}
//===- Address of Block Management ----------------------------------------===//
-
-/// getAddrLabelSymbol - Return the symbol to be used for the specified basic
-/// block when its address is taken. This cannot be its normal LBB label
-/// because the block may be accessed outside its containing function.
-MCSymbol *MachineModuleInfo::getAddrLabelSymbol(const BasicBlock *BB) {
- // Lazily create AddrLabelSymbols.
- if (AddrLabelSymbols == 0)
- AddrLabelSymbols = new MMIAddrLabelMap(Context);
- return AddrLabelSymbols->getAddrLabelSymbol(const_cast<BasicBlock*>(BB));
-}
-
/// getAddrLabelSymbolToEmit - Return the symbol to be used for the specified
/// basic block when its address is taken. If other blocks were RAUW'd to
/// this one, we may have to emit them as well, return the whole set.
-std::vector<MCSymbol*> MachineModuleInfo::
-getAddrLabelSymbolToEmit(const BasicBlock *BB) {
+ArrayRef<MCSymbol *>
+MachineModuleInfo::getAddrLabelSymbolToEmit(const BasicBlock *BB) {
// Lazily create AddrLabelSymbols.
- if (AddrLabelSymbols == 0)
+ if (!AddrLabelSymbols)
AddrLabelSymbols = new MMIAddrLabelMap(Context);
return AddrLabelSymbols->getAddrLabelSymbolToEmit(const_cast<BasicBlock*>(BB));
}
takeDeletedSymbolsForFunction(const Function *F,
std::vector<MCSymbol*> &Result) {
// If no blocks have had their addresses taken, we're done.
- if (AddrLabelSymbols == 0) return;
+ if (!AddrLabelSymbols) return;
return AddrLabelSymbols->
takeDeletedSymbolsForFunction(const_cast<Function*>(F), Result);
}
/// addLandingPad - Provide the label of a try LandingPad block.
///
MCSymbol *MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
- MCSymbol *LandingPadLabel = Context.CreateTempSymbol();
+ MCSymbol *LandingPadLabel = Context.createTempSymbol();
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
LP.LandingPadLabel = LandingPadLabel;
return LandingPadLabel;
}
-/// addPersonality - Provide the personality function for the exception
-/// information.
-void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
- const Function *Personality) {
- LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
- LP.Personality = Personality;
-
+void MachineModuleInfo::addPersonality(const Function *Personality) {
for (unsigned i = 0; i < Personalities.size(); ++i)
if (Personalities[i] == Personality)
return;
-
- // If this is the first personality we're adding go
- // ahead and add it at the beginning.
- if (Personalities[0] == NULL)
- Personalities[0] = Personality;
- else
- Personalities.push_back(Personality);
+ Personalities.push_back(Personality);
}
/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
///
-void MachineModuleInfo::addCatchTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<const GlobalVariable *> &TyInfo) {
+void MachineModuleInfo::
+addCatchTypeInfo(MachineBasicBlock *LandingPad,
+ ArrayRef<const GlobalValue *> TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
for (unsigned N = TyInfo.size(); N; --N)
LP.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
///
-void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<const GlobalVariable *> &TyInfo) {
+void MachineModuleInfo::
+addFilterTypeInfo(MachineBasicBlock *LandingPad,
+ ArrayRef<const GlobalValue *> TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
std::vector<unsigned> IdsInFilter(TyInfo.size());
for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
LP.TypeIds.push_back(0);
}
+void MachineModuleInfo::addSEHCatchHandler(MachineBasicBlock *LandingPad,
+ const Function *Filter,
+ const BlockAddress *RecoverBA) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ SEHHandler Handler;
+ Handler.FilterOrFinally = Filter;
+ Handler.RecoverBA = RecoverBA;
+ LP.SEHHandlers.push_back(Handler);
+}
+
+void MachineModuleInfo::addSEHCleanupHandler(MachineBasicBlock *LandingPad,
+ const Function *Cleanup) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ SEHHandler Handler;
+ Handler.FilterOrFinally = Cleanup;
+ Handler.RecoverBA = nullptr;
+ LP.SEHHandlers.push_back(Handler);
+}
+
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
/// pads.
void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
if (LandingPad.LandingPadLabel &&
!LandingPad.LandingPadLabel->isDefined() &&
(!LPMap || (*LPMap)[LandingPad.LandingPadLabel] == 0))
- LandingPad.LandingPadLabel = 0;
+ LandingPad.LandingPadLabel = nullptr;
// Special case: we *should* emit LPs with null LP MBB. This indicates
// "nounwind" case.
}
}
+/// setCallSiteLandingPad - Map the landing pad's EH symbol to the call site
+/// indexes.
+void MachineModuleInfo::setCallSiteLandingPad(MCSymbol *Sym,
+ ArrayRef<unsigned> Sites) {
+ LPadToCallSiteMap[Sym].append(Sites.begin(), Sites.end());
+}
+
/// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
-unsigned MachineModuleInfo::getTypeIDFor(const GlobalVariable *TI) {
+unsigned MachineModuleInfo::getTypeIDFor(const GlobalValue *TI) {
for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
if (TypeInfos[i] == TI) return i + 1;
// Add the new filter.
int FilterID = -(1 + FilterIds.size());
FilterIds.reserve(FilterIds.size() + TyIds.size() + 1);
- for (unsigned I = 0, N = TyIds.size(); I != N; ++I)
- FilterIds.push_back(TyIds[I]);
+ FilterIds.insert(FilterIds.end(), TyIds.begin(), TyIds.end());
FilterEnds.push_back(FilterIds.size());
FilterIds.push_back(0); // terminator
return FilterID;
}
-
-/// getPersonality - Return the personality function for the current function.
-const Function *MachineModuleInfo::getPersonality() const {
- // FIXME: Until PR1414 will be fixed, we're using 1 personality function per
- // function
- return !LandingPads.empty() ? LandingPads[0].Personality : NULL;
-}
-
-/// getPersonalityIndex - Return unique index for current personality
-/// function. NULL/first personality function should always get zero index.
-unsigned MachineModuleInfo::getPersonalityIndex() const {
- const Function* Personality = NULL;
-
- // Scan landing pads. If there is at least one non-NULL personality - use it.
- for (unsigned i = 0; i != LandingPads.size(); ++i)
- if (LandingPads[i].Personality) {
- Personality = LandingPads[i].Personality;
- break;
- }
-
- for (unsigned i = 0; i < Personalities.size(); ++i) {
- if (Personalities[i] == Personality)
- return i;
- }
-
- // This will happen if the current personality function is
- // in the zero index.
- return 0;
-}
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