//===----------------------------------------------------------------------===//
#include "llvm/iOther.h"
-#include "llvm/BasicBlock.h"
-#include "llvm/Method.h"
+#include "llvm/iPHINode.h"
+#include "llvm/Function.h"
#include "llvm/SymbolTable.h"
#include "llvm/Type.h"
-#include <algorithm>
+#include <algorithm> // find
//===----------------------------------------------------------------------===//
// TerminatorInst Class
//===----------------------------------------------------------------------===//
-TerminatorInst::TerminatorInst(unsigned iType)
+TerminatorInst::TerminatorInst(Instruction::TermOps iType)
: Instruction(Type::VoidTy, iType, "") {
}
-
-//===----------------------------------------------------------------------===//
-// MethodArgument Class
-//===----------------------------------------------------------------------===//
-
-// Specialize setName to take care of symbol table majik
-void MethodArgument::setName(const string &name) {
- Method *P;
- if ((P = getParent()) && hasName()) P->getSymbolTable()->remove(this);
- Value::setName(name);
- if (P && hasName()) P->getSymbolTable()->insert(this);
+TerminatorInst::TerminatorInst(const Type *Ty, Instruction::TermOps iType,
+ const std::string &Name)
+ : Instruction(Ty, iType, Name) {
}
// PHINode Class
//===----------------------------------------------------------------------===//
-PHINode::PHINode(const Type *Ty, const string &name)
+PHINode::PHINode(const Type *Ty, const std::string &name)
: Instruction(Ty, Instruction::PHINode, name) {
}
PHINode::PHINode(const PHINode &PN)
: Instruction(PN.getType(), Instruction::PHINode) {
-
- for (unsigned i = 0; i < PN.IncomingValues.size(); i++)
- IncomingValues.push_back(Use(PN.IncomingValues[i], this));
+ Operands.reserve(PN.Operands.size());
+ for (unsigned i = 0; i < PN.Operands.size(); i+=2) {
+ Operands.push_back(Use(PN.Operands[i], this));
+ Operands.push_back(Use(PN.Operands[i+1], this));
+ }
}
-void PHINode::dropAllReferences() {
- IncomingValues.clear();
+void PHINode::addIncoming(Value *D, BasicBlock *BB) {
+ assert(getType() == D->getType() &&
+ "All operands to PHI node must be the same type as the PHI node!");
+ Operands.push_back(Use(D, this));
+ Operands.push_back(Use(BB, this));
}
-bool PHINode::setOperand(unsigned i, Value *Val) {
- assert(Val && "PHI node must only reference nonnull definitions!");
- if (i >= IncomingValues.size()) return false;
-
- IncomingValues[i] = Val;
- return true;
-}
-
-void PHINode::addIncoming(Value *D) {
- IncomingValues.push_back(Use(D, this));
+// removeIncomingValue - Remove an incoming value. This is useful if a
+// predecessor basic block is deleted.
+Value *PHINode::removeIncomingValue(const BasicBlock *BB) {
+ op_iterator Idx = find(Operands.begin(), Operands.end(), (const Value*)BB);
+ assert(Idx != Operands.end() && "BB not in PHI node!");
+ --Idx; // Back up to value prior to Basic block
+ Value *Removed = *Idx;
+ Operands.erase(Idx, Idx+2); // Erase Value and BasicBlock
+ return Removed;
}
-