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, Instruction *InsertBefore)
  18   : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
  19                                  ->getElementType())->getReturnType(),
  20                 Instruction::Call, Name, InsertBefore) {
  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(Value *Func, const std::string &Name,
  36                    Instruction *InsertBefore)
  37   : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
  38                                    ->getElementType())->getReturnType(),
  39                 Instruction::Call, Name, InsertBefore) {
  40   Operands.reserve(1);
  41   Operands.push_back(Use(Func, this));
  42
  43   const FunctionType *MTy =
  44     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
  45
  46   const FunctionType::ParamTypes &PL = MTy->getParamTypes();
  47   assert(PL.empty() && "Calling a function with bad signature");
  48 }
  49
  50 CallInst::CallInst(Value *Func, Value* A, const std::string &Name,
  51                    Instruction  *InsertBefore)
  52   : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
  53                                    ->getElementType())->getReturnType(),
  54                 Instruction::Call, Name, InsertBefore) {
  55   Operands.reserve(2);
  56   Operands.push_back(Use(Func, this));
  57
  58   const FunctionType *MTy =
  59     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
  60
  61   const FunctionType::ParamTypes &PL = MTy->getParamTypes();
  62   assert(PL.size() == 1 || (MTy->isVarArg() && PL.empty()) &&
  63          "Calling a function with bad signature");
  64   Operands.push_back(Use(A, this));
  65 }
  66
  67 CallInst::CallInst(const CallInst &CI)
  68   : Instruction(CI.getType(), Instruction::Call) {
  69   Operands.reserve(CI.Operands.size());
  70   for (unsigned i = 0; i < CI.Operands.size(); ++i)
  71     Operands.push_back(Use(CI.Operands[i], this));
  72 }
  73
  74 //===----------------------------------------------------------------------===//
  75 //                        InvokeInst Implementation
  76 //===----------------------------------------------------------------------===//
  77
  78 InvokeInst::InvokeInst(Value *Func, BasicBlock *IfNormal,
  79                        BasicBlock *IfException,
  80                        const std::vector<Value*> &params,
  81                        const std::string &Name, Instruction *InsertBefore)
  82   : TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
  83                                     ->getElementType())->getReturnType(),
  84                    Instruction::Invoke, Name, InsertBefore) {
  85   Operands.reserve(3+params.size());
  86   Operands.push_back(Use(Func, this));
  87   Operands.push_back(Use((Value*)IfNormal, this));
  88   Operands.push_back(Use((Value*)IfException, this));
  89   const FunctionType *MTy =
  90     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
  91
  92   const FunctionType::ParamTypes &PL = MTy->getParamTypes();
  93   assert((params.size() == PL.size()) ||
  94          (MTy->isVarArg() && params.size() > PL.size()) &&
  95          "Calling a function with bad signature");
  96
  97   for (unsigned i = 0; i < params.size(); i++)
  98     Operands.push_back(Use(params[i], this));
  99 }
 100
 101 InvokeInst::InvokeInst(const InvokeInst &CI)
 102   : TerminatorInst(CI.getType(), Instruction::Invoke) {
 103   Operands.reserve(CI.Operands.size());
 104   for (unsigned i = 0; i < CI.Operands.size(); ++i)
 105     Operands.push_back(Use(CI.Operands[i], this));
 106 }
 107