#include "llvm/Module.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/Streams.h"
using namespace llvm;
using namespace llvm::dwarf;
X("machinemoduleinfo", "Module Information");
char MachineModuleInfo::ID = 0;
+// Out of line virtual method.
+MachineModuleInfoImpl::~MachineModuleInfoImpl() {}
+
//===----------------------------------------------------------------------===//
-
+
MachineModuleInfo::MachineModuleInfo()
: ImmutablePass(&ID)
-, LabelIDList()
-, FrameMoves()
-, LandingPads()
-, Personalities()
+, ObjFileMMI(0)
, CallsEHReturn(0)
, CallsUnwindInit(0)
-, DbgInfoAvailable(false)
-{
- // Always emit "no personality" info
+, DbgInfoAvailable(false) {
+ // Always emit some info, by default "no personality" info.
Personalities.push_back(NULL);
}
-MachineModuleInfo::~MachineModuleInfo() {
+MachineModuleInfo::~MachineModuleInfo() {
+ delete ObjFileMMI;
}
/// doInitialization - Initialize the state for a new module.
void MachineModuleInfo::EndFunction() {
// Clean up frame info.
FrameMoves.clear();
-
+
// Clean up exception info.
LandingPads.clear();
TypeInfos.clear();
if (LP.LandingPadBlock == LandingPad)
return LP;
}
-
+
LandingPads.push_back(LandingPadInfo(LandingPad));
return LandingPads[N];
}
unsigned MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
unsigned LandingPadLabel = NextLabelID();
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
- LP.LandingPadLabel = LandingPadLabel;
+ LP.LandingPadLabel = LandingPadLabel;
return LandingPadLabel;
}
for (unsigned i = 0; i < Personalities.size(); ++i)
if (Personalities[i] == Personality)
return;
-
- Personalities.push_back(Personality);
+
+ // 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);
}
/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
}
}
-/// getTypeIDFor - Return the type id for the specified typeinfo. This is
+/// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
unsigned MachineModuleInfo::getTypeIDFor(GlobalVariable *TI) {
for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
}
/// getPersonalityIndex - Return unique index for current personality
-/// function. NULL personality function should always get zero index.
+/// 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 should never happen
- llvm_unreachable("Personality function should be set!");
+ // This will happen if the current personality function is
+ // in the zero index.
return 0;
}
DebugLabelFolder() : MachineFunctionPass(&ID) {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesCFG();
AU.addPreservedID(MachineLoopInfoID);
AU.addPreservedID(MachineDominatorsID);
MachineFunctionPass::getAnalysisUsage(AU);
// Get machine module info.
MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>();
if (!MMI) return false;
-
+
// Track if change is made.
bool MadeChange = false;
// No prior label to begin.
unsigned PriorLabel = 0;
-
+
// Iterate through basic blocks.
for (MachineFunction::iterator BB = MF.begin(), E = MF.end();
BB != E; ++BB) {
if (I->isDebugLabel() && !MMI->isDbgLabelUsed(I->getOperand(0).getImm())){
// The label ID # is always operand #0, an immediate.
unsigned NextLabel = I->getOperand(0).getImm();
-
+
// If there was an immediate prior label.
if (PriorLabel) {
// Remap the current label to prior label.
// No consecutive labels.
PriorLabel = 0;
}
-
+
++I;
}
}
-
+
return MadeChange;
}
FunctionPass *createDebugLabelFoldingPass() { return new DebugLabelFolder(); }
}
-