lib/VMCore/iCall.cpp

   1 //===-- iCall.cpp - Implement the call & invoke instructions -----*- C++ -*--=//
   2 //
   3 // This file implements the call and invoke instructions.
   4 //
   5 //===----------------------------------------------------------------------===//
   6
   7 #include "llvm/iOther.h"
   8 #include "llvm/iTerminators.h"
   9 #include "llvm/DerivedTypes.h"
  10 #include "llvm/Function.h"
  11
  12 //===----------------------------------------------------------------------===//
  13 //                        CallInst Implementation
  14 //===----------------------------------------------------------------------===//
  15
  16 CallInst::CallInst(Value *Func, const std::vector<Value*> &params,
  17                    const std::string &Name)
  18   : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
  19                                  ->getElementType())->getReturnType(),
  20                 Instruction::Call, Name) {
  21   Operands.reserve(1+params.size());
  22   Operands.push_back(Use(Func, this));
  23
  24   const FunctionType *MTy =
  25     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
  26
  27   const FunctionType::ParamTypes &PL = MTy->getParamTypes();
  28   assert((params.size() == PL.size()) ||
  29          (MTy->isVarArg() && params.size() >= PL.size()) &&
  30          "Calling a function with bad signature");
  31   for (unsigned i = 0; i < params.size(); i++)
  32     Operands.push_back(Use(params[i], this));
  33 }
  34
  35 CallInst::CallInst(const CallInst &CI)
  36   : Instruction(CI.getType(), Instruction::Call) {
  37   Operands.reserve(CI.Operands.size());
  38   for (unsigned i = 0; i < CI.Operands.size(); ++i)
  39     Operands.push_back(Use(CI.Operands[i], this));
  40 }
  41
  42 //===----------------------------------------------------------------------===//
  43 //                        InvokeInst Implementation
  44 //===----------------------------------------------------------------------===//
  45
  46 InvokeInst::InvokeInst(Value *Func, BasicBlock *IfNormal,
  47                        BasicBlock *IfException,
  48                        const std::vector<Value*> &params,
  49                        const std::string &Name)
  50   : TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
  51                                     ->getElementType())->getReturnType(),
  52                    Instruction::Invoke, Name) {
  53   Operands.reserve(3+params.size());
  54   Operands.push_back(Use(Func, this));
  55   Operands.push_back(Use((Value*)IfNormal, this));
  56   Operands.push_back(Use((Value*)IfException, this));
  57   const FunctionType *MTy =
  58     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
  59
  60   const FunctionType::ParamTypes &PL = MTy->getParamTypes();
  61   assert((params.size() == PL.size()) ||
  62          (MTy->isVarArg() && params.size() > PL.size()) &&
  63          "Calling a function with bad signature");
  64
  65   for (unsigned i = 0; i < params.size(); i++)
  66     Operands.push_back(Use(params[i], this));
  67 }
  68
  69 InvokeInst::InvokeInst(const InvokeInst &CI)
  70   : TerminatorInst(CI.getType(), Instruction::Invoke) {
  71   Operands.reserve(CI.Operands.size());
  72   for (unsigned i = 0; i < CI.Operands.size(); ++i)
  73     Operands.push_back(Use(CI.Operands[i], this));
  74 }
  75