namespace {
/// LowerSwitch Pass - Replace all SwitchInst instructions with chained branch
- /// instructions. Note that this cannot be a BasicBlock pass because it
- /// modifies the CFG!
+ /// instructions.
class LowerSwitch : public FunctionPass {
public:
static char ID; // Pass identification, replacement for typeid
- LowerSwitch() : FunctionPass(ID) {}
+ LowerSwitch() : FunctionPass(ID) {
+ initializeLowerSwitchPass(*PassRegistry::getPassRegistry());
+ }
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
// This is a cluster of orthogonal Transforms
AU.addPreserved<UnifyFunctionExitNodes>();
- AU.addPreservedID(PromoteMemoryToRegisterID);
+ AU.addPreserved("mem2reg");
AU.addPreservedID(LowerInvokePassID);
}
Constant* High;
BasicBlock* BB;
- CaseRange() : Low(0), High(0), BB(0) { }
- CaseRange(Constant* low, Constant* high, BasicBlock* bb) :
+ CaseRange(Constant *low = 0, Constant *high = 0, BasicBlock *bb = 0) :
Low(low), High(high), BB(bb) { }
};
}
char LowerSwitch::ID = 0;
-static RegisterPass<LowerSwitch>
-X("lowerswitch", "Lower SwitchInst's to branches");
+INITIALIZE_PASS(LowerSwitch, "lowerswitch",
+ "Lower SwitchInst's to branches", false, false)
-// Publically exposed interface to pass...
+// Publicly exposed interface to pass...
char &llvm::LowerSwitchID = LowerSwitch::ID;
// createLowerSwitchPass - Interface to this file...
FunctionPass *llvm::createLowerSwitchPass() {
// operator<< - Used for debugging purposes.
//
static raw_ostream& operator<<(raw_ostream &O,
- const LowerSwitch::CaseVector &C) ATTRIBUTE_USED;
+ const LowerSwitch::CaseVector &C)
+ LLVM_ATTRIBUTE_USED;
static raw_ostream& operator<<(raw_ostream &O,
const LowerSwitch::CaseVector &C) {
O << "[";
BasicBlock *CurBlock = SI->getParent();
BasicBlock *OrigBlock = CurBlock;
Function *F = CurBlock->getParent();
- Value *Val = SI->getOperand(0); // The value we are switching on...
+ Value *Val = SI->getCondition(); // The value we are switching on...
BasicBlock* Default = SI->getDefaultDest();
// If there is only the default destination, don't bother with the code below.
- if (SI->getNumOperands() == 2) {
+ if (SI->getNumCases() == 1) {
BranchInst::Create(SI->getDefaultDest(), CurBlock);
CurBlock->getInstList().erase(SI);
return;