llvm-6502/include/llvm/Support/CallSite.h
2003-02-24 20:35:45 +00:00

50 lines
1.5 KiB
C++

//===-- llvm/Support/CallSite.h - Abstract Call & Invoke instrs -*- C++ -*-===//
//
// This file defines the CallSite class, which is a handy wrapper for code that
// wants to treat Call and Invoke instructions in a generic way.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_CALLSITE_H
#define LLVM_SUPPORT_CALLSITE_H
#include "llvm/Instruction.h"
class CallInst;
class InvokeInst;
class CallSite {
Instruction *I;
public:
CallSite(CallInst *CI) : I((Instruction*)CI) {}
CallSite(InvokeInst *II) : I((Instruction*)II) {}
/// getCalledValue - Return the pointer to function that is being called...
///
Value *getCalledValue() const { return I->getOperand(0); }
/// getCalledFunction - Return the function being called if this is a direct
/// call, otherwise return null (if it's an indirect call).
///
Function *getCalledFunction() const {
return dyn_cast<Function>(getCalledValue());
}
/// arg_iterator - The type of iterator to use when looping over actual
/// arguments at this call site...
typedef User::op_iterator arg_iterator;
/// arg_begin/arg_end - Return iterators corresponding to the actual argument
/// list for a call site.
///
arg_iterator arg_begin() const {
if (I->getOpcode() == Instruction::Call)
return I->op_begin()+1; // Skip Function
else
return I->op_begin()+3; // Skip Function, BB, BB
}
arg_iterator arg_end() const { return I->op_begin(); }
};
#endif