//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "dwarfehprepare"
-#include "llvm/Function.h"
-#include "llvm/Instructions.h"
-#include "llvm/IntrinsicInst.h"
-#include "llvm/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Analysis/Dominators.h"
#include "llvm/CodeGen/Passes.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/IR/Dominators.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/IntrinsicInst.h"
+#include "llvm/IR/Module.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/Pass.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
namespace {
class DwarfEHPrepare : public FunctionPass {
const TargetMachine *TM;
- const TargetLowering *TLI;
// RewindFunction - _Unwind_Resume or the target equivalent.
Constant *RewindFunction;
bool InsertUnwindResumeCalls(Function &Fn);
- Instruction *GetExceptionObject(ResumeInst *RI);
+ Value *GetExceptionObject(ResumeInst *RI);
public:
static char ID; // Pass identification, replacement for typeid.
- DwarfEHPrepare(const TargetMachine *tm) :
- FunctionPass(ID), TM(tm), TLI(TM->getTargetLowering()),
- RewindFunction(0) {
- initializeDominatorTreePass(*PassRegistry::getPassRegistry());
- }
+ DwarfEHPrepare(const TargetMachine *TM)
+ : FunctionPass(ID), TM(TM), RewindFunction(0) {
+ initializeDominatorTreeWrapperPassPass(*PassRegistry::getPassRegistry());
+ }
virtual bool runOnFunction(Function &Fn);
char DwarfEHPrepare::ID = 0;
-FunctionPass *llvm::createDwarfEHPass(const TargetMachine *tm) {
- return new DwarfEHPrepare(tm);
+FunctionPass *llvm::createDwarfEHPass(const TargetMachine *TM) {
+ return new DwarfEHPrepare(TM);
}
/// GetExceptionObject - Return the exception object from the value passed into
/// the 'resume' instruction (typically an aggregate). Clean up any dead
/// instructions, including the 'resume' instruction.
-Instruction *DwarfEHPrepare::GetExceptionObject(ResumeInst *RI) {
+Value *DwarfEHPrepare::GetExceptionObject(ResumeInst *RI) {
Value *V = RI->getOperand(0);
- Instruction *ExnObj = 0;
+ Value *ExnObj = 0;
InsertValueInst *SelIVI = dyn_cast<InsertValueInst>(V);
LoadInst *SelLoad = 0;
InsertValueInst *ExcIVI = 0;
ExcIVI = dyn_cast<InsertValueInst>(SelIVI->getOperand(0));
if (ExcIVI && isa<UndefValue>(ExcIVI->getOperand(0)) &&
ExcIVI->getNumIndices() == 1 && *ExcIVI->idx_begin() == 0) {
- ExnObj = cast<Instruction>(ExcIVI->getOperand(1));
+ ExnObj = ExcIVI->getOperand(1);
SelLoad = dyn_cast<LoadInst>(SelIVI->getOperand(1));
EraseIVIs = true;
}
/// InsertUnwindResumeCalls - Convert the ResumeInsts that are still present
/// into calls to the appropriate _Unwind_Resume function.
bool DwarfEHPrepare::InsertUnwindResumeCalls(Function &Fn) {
- bool UsesNewEH = false;
SmallVector<ResumeInst*, 16> Resumes;
for (Function::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) {
TerminatorInst *TI = I->getTerminator();
if (ResumeInst *RI = dyn_cast<ResumeInst>(TI))
Resumes.push_back(RI);
- else if (InvokeInst *II = dyn_cast<InvokeInst>(TI))
- UsesNewEH = II->getUnwindDest()->isLandingPad();
}
if (Resumes.empty())
- return UsesNewEH;
+ return false;
// Find the rewind function if we didn't already.
+ const TargetLowering *TLI = TM->getTargetLowering();
if (!RewindFunction) {
LLVMContext &Ctx = Resumes[0]->getContext();
FunctionType *FTy = FunctionType::get(Type::getVoidTy(Ctx),
// _Unwind_Resume to the end of the single resume block.
ResumeInst *RI = Resumes.front();
BasicBlock *UnwindBB = RI->getParent();
- Instruction *ExnObj = GetExceptionObject(RI);
+ Value *ExnObj = GetExceptionObject(RI);
// Call the _Unwind_Resume function.
CallInst *CI = CallInst::Create(RewindFunction, ExnObj, "", UnwindBB);
BasicBlock *Parent = RI->getParent();
BranchInst::Create(UnwindBB, Parent);
- Instruction *ExnObj = GetExceptionObject(RI);
+ Value *ExnObj = GetExceptionObject(RI);
PN->addIncoming(ExnObj, Parent);
++NumResumesLowered;