1 //===-- InstrinsicInst.cpp - Intrinsic Instruction Wrappers -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements methods that make it really easy to deal with intrinsic
13 // All intrinsic function calls are instances of the call instruction, so these
14 // are all subclasses of the CallInst class. Note that none of these classes
15 // has state or virtual methods, which is an important part of this gross/neat
18 // In some cases, arguments to intrinsics need to be generic and are defined as
19 // type pointer to empty struct { }*. To access the real item of interest the
20 // cast instruction needs to be stripped away.
22 //===----------------------------------------------------------------------===//
24 #include "llvm/IntrinsicInst.h"
25 #include "llvm/Constants.h"
26 #include "llvm/GlobalVariable.h"
27 #include "llvm/Metadata.h"
30 //===----------------------------------------------------------------------===//
31 /// DbgInfoIntrinsic - This is the common base class for debug info intrinsics
34 static Value *CastOperand(Value *C) {
35 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
37 return CE->getOperand(0);
41 Value *DbgInfoIntrinsic::StripCast(Value *C) {
42 if (Value *CO = CastOperand(C)) {
44 } else if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) {
45 if (GV->hasInitializer())
46 if (Value *CO = CastOperand(GV->getInitializer()))
49 return dyn_cast<GlobalVariable>(C);
52 //===----------------------------------------------------------------------===//
53 /// DbgDeclareInst - This represents the llvm.dbg.declare instruction.
56 Value *DbgDeclareInst::getAddress() const {
57 if (MDNode* MD = cast_or_null<MDNode>(getArgOperand(0)))
58 return MD->getOperand(0);
63 //===----------------------------------------------------------------------===//
64 /// DbgValueInst - This represents the llvm.dbg.value instruction.
67 const Value *DbgValueInst::getValue() const {
68 return cast<MDNode>(getArgOperand(0))->getOperand(0);
71 Value *DbgValueInst::getValue() {
72 return cast<MDNode>(getArgOperand(0))->getOperand(0);