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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@770 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
//===-- InstrTypes.cpp - Implement Instruction subclasses --------*- C++ -*--=//
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//
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// This file implements
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/iOther.h"
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#include "llvm/BasicBlock.h"
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#include "llvm/Method.h"
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#include "llvm/SymbolTable.h"
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#include "llvm/Type.h"
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#include <algorithm> // find
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//===----------------------------------------------------------------------===//
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// TerminatorInst Class
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//===----------------------------------------------------------------------===//
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TerminatorInst::TerminatorInst(Instruction::TermOps iType)
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: Instruction(Type::VoidTy, iType, "") {
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}
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TerminatorInst::TerminatorInst(const Type *Ty, Instruction::TermOps iType,
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const string &Name = "")
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: Instruction(Ty, iType, Name) {
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}
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//===----------------------------------------------------------------------===//
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// MethodArgument Class
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//===----------------------------------------------------------------------===//
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// Specialize setName to take care of symbol table majik
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void MethodArgument::setName(const string &name, SymbolTable *ST) {
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Method *P;
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assert((ST == 0 || (!getParent() || ST == getParent()->getSymbolTable())) &&
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"Invalid symtab argument!");
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if ((P = getParent()) && hasName()) P->getSymbolTable()->remove(this);
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Value::setName(name);
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if (P && hasName()) P->getSymbolTable()->insert(this);
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}
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//===----------------------------------------------------------------------===//
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// PHINode Class
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//===----------------------------------------------------------------------===//
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PHINode::PHINode(const Type *Ty, const string &name)
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: Instruction(Ty, Instruction::PHINode, name) {
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}
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PHINode::PHINode(const PHINode &PN)
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: Instruction(PN.getType(), Instruction::PHINode) {
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Operands.reserve(PN.Operands.size());
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for (unsigned i = 0; i < PN.Operands.size(); i+=2) {
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Operands.push_back(Use(PN.Operands[i], this));
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Operands.push_back(Use(PN.Operands[i+1], this));
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}
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}
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void PHINode::addIncoming(Value *D, BasicBlock *BB) {
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Operands.push_back(Use(D, this));
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Operands.push_back(Use(BB, this));
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}
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// removeIncomingValue - Remove an incoming value. This is useful if a
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// predecessor basic block is deleted.
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Value *PHINode::removeIncomingValue(const BasicBlock *BB) {
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op_iterator Idx = find(Operands.begin(), Operands.end(), (const Value*)BB);
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assert(Idx != Operands.end() && "BB not in PHI node!");
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--Idx; // Back up to value prior to Basic block
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Value *Removed = *Idx;
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Operands.erase(Idx, Idx+2); // Erase Value and BasicBlock
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return Removed;
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}
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