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llvm-6502/lib/VMCore/Instructions.cpp
Duncan Sands 7016ec1a45 Now that SrcBits and DestBits always represent the primitive size, rather 
than either the primitive size or the element primitive size (in the case
of vectors), simplify the vector logic.  No functionality change.  There
is some distracting churn in the patch because I lined up comments better
while there - sorry about that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131533 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-18 10:59:25 +00:00

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//===-- Instructions.cpp - Implement the LLVM instructions ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements all of the non-inline methods for the LLVM instruction
// classes.
//
//===----------------------------------------------------------------------===//
#include "LLVMContextImpl.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/Operator.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/ConstantRange.h"
#include "llvm/Support/MathExtras.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// CallSite Class
//===----------------------------------------------------------------------===//
User::op_iterator CallSite::getCallee() const {
Instruction *II(getInstruction());
return isCall()
? cast<CallInst>(II)->op_end() - 1 // Skip Callee
: cast<InvokeInst>(II)->op_end() - 3; // Skip BB, BB, Callee
}
//===----------------------------------------------------------------------===//
// TerminatorInst Class
//===----------------------------------------------------------------------===//
// Out of line virtual method, so the vtable, etc has a home.
TerminatorInst::~TerminatorInst() {
}
//===----------------------------------------------------------------------===//
// UnaryInstruction Class
//===----------------------------------------------------------------------===//
// Out of line virtual method, so the vtable, etc has a home.
UnaryInstruction::~UnaryInstruction() {
}
//===----------------------------------------------------------------------===//
// SelectInst Class
//===----------------------------------------------------------------------===//
/// areInvalidOperands - Return a string if the specified operands are invalid
/// for a select operation, otherwise return null.
const char *SelectInst::areInvalidOperands(Value *Op0, Value *Op1, Value *Op2) {
if (Op1->getType() != Op2->getType())
return "both values to select must have same type";
if (const VectorType *VT = dyn_cast<VectorType>(Op0->getType())) {
// Vector select.
if (VT->getElementType() != Type::getInt1Ty(Op0->getContext()))
return "vector select condition element type must be i1";
const VectorType *ET = dyn_cast<VectorType>(Op1->getType());
if (ET == 0)
return "selected values for vector select must be vectors";
if (ET->getNumElements() != VT->getNumElements())
return "vector select requires selected vectors to have "
"the same vector length as select condition";
} else if (Op0->getType() != Type::getInt1Ty(Op0->getContext())) {
return "select condition must be i1 or <n x i1>";
}
return 0;
}
//===----------------------------------------------------------------------===//
// PHINode Class
//===----------------------------------------------------------------------===//
PHINode::PHINode(const PHINode &PN)
: Instruction(PN.getType(), Instruction::PHI,
allocHungoffUses(PN.getNumOperands()), PN.getNumOperands()),
ReservedSpace(PN.getNumOperands()) {
Use *OL = OperandList;
for (unsigned i = 0, e = PN.getNumOperands(); i != e; i+=2) {
OL[i] = PN.getOperand(i);
OL[i+1] = PN.getOperand(i+1);
}
SubclassOptionalData = PN.SubclassOptionalData;
}
PHINode::~PHINode() {
dropHungoffUses();
}
// removeIncomingValue - Remove an incoming value. This is useful if a
// predecessor basic block is deleted.
Value *PHINode::removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty) {
unsigned NumOps = getNumOperands();
Use *OL = OperandList;
assert(Idx*2 < NumOps && "BB not in PHI node!");
Value *Removed = OL[Idx*2];
// Move everything after this operand down.
//
// FIXME: we could just swap with the end of the list, then erase. However,
// client might not expect this to happen. The code as it is thrashes the
// use/def lists, which is kinda lame.
for (unsigned i = (Idx+1)*2; i != NumOps; i += 2) {
OL[i-2] = OL[i];
OL[i-2+1] = OL[i+1];
}
// Nuke the last value.
OL[NumOps-2].set(0);
OL[NumOps-2+1].set(0);
NumOperands = NumOps-2;
// If the PHI node is dead, because it has zero entries, nuke it now.
if (NumOps == 2 && DeletePHIIfEmpty) {
// If anyone is using this PHI, make them use a dummy value instead...
replaceAllUsesWith(UndefValue::get(getType()));
eraseFromParent();
}
return Removed;
}
/// growOperands - grow operands - This grows the operand list in response
/// to a push_back style of operation. This grows the number of ops by 1.5
/// times.
///
void PHINode::growOperands() {
unsigned e = getNumOperands();
// Multiply by 1.5 and round down so the result is still even.
unsigned NumOps = e + e / 4 * 2;
if (NumOps < 4) NumOps = 4; // 4 op PHI nodes are VERY common.
ReservedSpace = NumOps;
Use *OldOps = OperandList;
Use *NewOps = allocHungoffUses(NumOps);
std::copy(OldOps, OldOps + e, NewOps);
OperandList = NewOps;
Use::zap(OldOps, OldOps + e, true);
}
/// hasConstantValue - If the specified PHI node always merges together the same
/// value, return the value, otherwise return null.
Value *PHINode::hasConstantValue() const {
// Exploit the fact that phi nodes always have at least one entry.
Value *ConstantValue = getIncomingValue(0);
for (unsigned i = 1, e = getNumIncomingValues(); i != e; ++i)
if (getIncomingValue(i) != ConstantValue)
return 0; // Incoming values not all the same.
return ConstantValue;
}
//===----------------------------------------------------------------------===//
// CallInst Implementation
//===----------------------------------------------------------------------===//
CallInst::~CallInst() {
}
void CallInst::init(Value *Func, Value* const *Params, unsigned NumParams) {
assert(NumOperands == NumParams+1 && "NumOperands not set up?");
Op<-1>() = Func;
const FunctionType *FTy =
cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
(void)FTy; // silence warning.
assert((NumParams == FTy->getNumParams() ||
(FTy->isVarArg() && NumParams > FTy->getNumParams())) &&
"Calling a function with bad signature!");
for (unsigned i = 0; i != NumParams; ++i) {
assert((i >= FTy->getNumParams() ||
FTy->getParamType(i) == Params[i]->getType()) &&
"Calling a function with a bad signature!");
OperandList[i] = Params[i];
}
}
void CallInst::init(Value *Func, Value *Actual1, Value *Actual2) {
assert(NumOperands == 3 && "NumOperands not set up?");
Op<-1>() = Func;
Op<0>() = Actual1;
Op<1>() = Actual2;
const FunctionType *FTy =
cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
(void)FTy; // silence warning.
assert((FTy->getNumParams() == 2 ||
(FTy->isVarArg() && FTy->getNumParams() < 2)) &&
"Calling a function with bad signature");
assert((0 >= FTy->getNumParams() ||
FTy->getParamType(0) == Actual1->getType()) &&
"Calling a function with a bad signature!");
assert((1 >= FTy->getNumParams() ||
FTy->getParamType(1) == Actual2->getType()) &&
"Calling a function with a bad signature!");
}
void CallInst::init(Value *Func, Value *Actual) {
assert(NumOperands == 2 && "NumOperands not set up?");
Op<-1>() = Func;
Op<0>() = Actual;
const FunctionType *FTy =
cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
(void)FTy; // silence warning.
assert((FTy->getNumParams() == 1 ||
(FTy->isVarArg() && FTy->getNumParams() == 0)) &&
"Calling a function with bad signature");
assert((0 == FTy->getNumParams() ||
FTy->getParamType(0) == Actual->getType()) &&
"Calling a function with a bad signature!");
}
void CallInst::init(Value *Func) {
assert(NumOperands == 1 && "NumOperands not set up?");
Op<-1>() = Func;
const FunctionType *FTy =
cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
(void)FTy; // silence warning.
assert(FTy->getNumParams() == 0 && "Calling a function with bad signature");
}
CallInst::CallInst(Value *Func, Value* Actual, const Twine &Name,
Instruction *InsertBefore)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call,
OperandTraits<CallInst>::op_end(this) - 2,
2, InsertBefore) {
init(Func, Actual);
setName(Name);
}
CallInst::CallInst(Value *Func, Value* Actual, const Twine &Name,
BasicBlock *InsertAtEnd)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call,
OperandTraits<CallInst>::op_end(this) - 2,
2, InsertAtEnd) {
init(Func, Actual);
setName(Name);
}
CallInst::CallInst(Value *Func, const Twine &Name,
Instruction *InsertBefore)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call,
OperandTraits<CallInst>::op_end(this) - 1,
1, InsertBefore) {
init(Func);
setName(Name);
}
CallInst::CallInst(Value *Func, const Twine &Name,
BasicBlock *InsertAtEnd)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call,
OperandTraits<CallInst>::op_end(this) - 1,
1, InsertAtEnd) {
init(Func);
setName(Name);
}
CallInst::CallInst(const CallInst &CI)
: Instruction(CI.getType(), Instruction::Call,
OperandTraits<CallInst>::op_end(this) - CI.getNumOperands(),
CI.getNumOperands()) {
setAttributes(CI.getAttributes());
setTailCall(CI.isTailCall());
setCallingConv(CI.getCallingConv());
Use *OL = OperandList;
Use *InOL = CI.OperandList;
for (unsigned i = 0, e = CI.getNumOperands(); i != e; ++i)
OL[i] = InOL[i];
SubclassOptionalData = CI.SubclassOptionalData;
}
void CallInst::addAttribute(unsigned i, Attributes attr) {
AttrListPtr PAL = getAttributes();
PAL = PAL.addAttr(i, attr);
setAttributes(PAL);
}
void CallInst::removeAttribute(unsigned i, Attributes attr) {
AttrListPtr PAL = getAttributes();
PAL = PAL.removeAttr(i, attr);
setAttributes(PAL);
}
bool CallInst::paramHasAttr(unsigned i, Attributes attr) const {
if (AttributeList.paramHasAttr(i, attr))
return true;
if (const Function *F = getCalledFunction())
return F->paramHasAttr(i, attr);
return false;
}
/// IsConstantOne - Return true only if val is constant int 1
static bool IsConstantOne(Value *val) {
assert(val && "IsConstantOne does not work with NULL val");
return isa<ConstantInt>(val) && cast<ConstantInt>(val)->isOne();
}
static Instruction *createMalloc(Instruction *InsertBefore,
BasicBlock *InsertAtEnd, const Type *IntPtrTy,
const Type *AllocTy, Value *AllocSize,
Value *ArraySize, Function *MallocF,
const Twine &Name) {
assert(((!InsertBefore && InsertAtEnd) || (InsertBefore && !InsertAtEnd)) &&
"createMalloc needs either InsertBefore or InsertAtEnd");
// malloc(type) becomes:
// bitcast (i8* malloc(typeSize)) to type*
// malloc(type, arraySize) becomes:
// bitcast (i8 *malloc(typeSize*arraySize)) to type*
if (!ArraySize)
ArraySize = ConstantInt::get(IntPtrTy, 1);
else if (ArraySize->getType() != IntPtrTy) {
if (InsertBefore)
ArraySize = CastInst::CreateIntegerCast(ArraySize, IntPtrTy, false,
"", InsertBefore);
else
ArraySize = CastInst::CreateIntegerCast(ArraySize, IntPtrTy, false,
"", InsertAtEnd);
}
if (!IsConstantOne(ArraySize)) {
if (IsConstantOne(AllocSize)) {
AllocSize = ArraySize; // Operand * 1 = Operand
} else if (Constant *CO = dyn_cast<Constant>(ArraySize)) {
Constant *Scale = ConstantExpr::getIntegerCast(CO, IntPtrTy,
false /*ZExt*/);
// Malloc arg is constant product of type size and array size
AllocSize = ConstantExpr::getMul(Scale, cast<Constant>(AllocSize));
} else {
// Multiply type size by the array size...
if (InsertBefore)
AllocSize = BinaryOperator::CreateMul(ArraySize, AllocSize,
"mallocsize", InsertBefore);
else
AllocSize = BinaryOperator::CreateMul(ArraySize, AllocSize,
"mallocsize", InsertAtEnd);
}
}
assert(AllocSize->getType() == IntPtrTy && "malloc arg is wrong size");
// Create the call to Malloc.
BasicBlock* BB = InsertBefore ? InsertBefore->getParent() : InsertAtEnd;
Module* M = BB->getParent()->getParent();
const Type *BPTy = Type::getInt8PtrTy(BB->getContext());
Value *MallocFunc = MallocF;
if (!MallocFunc)
// prototype malloc as "void *malloc(size_t)"
MallocFunc = M->getOrInsertFunction("malloc", BPTy, IntPtrTy, NULL);
const PointerType *AllocPtrType = PointerType::getUnqual(AllocTy);
CallInst *MCall = NULL;
Instruction *Result = NULL;
if (InsertBefore) {
MCall = CallInst::Create(MallocFunc, AllocSize, "malloccall", InsertBefore);
Result = MCall;
if (Result->getType() != AllocPtrType)
// Create a cast instruction to convert to the right type...
Result = new BitCastInst(MCall, AllocPtrType, Name, InsertBefore);
} else {
MCall = CallInst::Create(MallocFunc, AllocSize, "malloccall");
Result = MCall;
if (Result->getType() != AllocPtrType) {
InsertAtEnd->getInstList().push_back(MCall);
// Create a cast instruction to convert to the right type...
Result = new BitCastInst(MCall, AllocPtrType, Name);
}
}
MCall->setTailCall();
if (Function *F = dyn_cast<Function>(MallocFunc)) {
MCall->setCallingConv(F->getCallingConv());
if (!F->doesNotAlias(0)) F->setDoesNotAlias(0);
}
assert(!MCall->getType()->isVoidTy() && "Malloc has void return type");
return Result;
}
/// CreateMalloc - Generate the IR for a call to malloc:
/// 1. Compute the malloc call's argument as the specified type's size,
/// possibly multiplied by the array size if the array size is not
/// constant 1.
/// 2. Call malloc with that argument.
/// 3. Bitcast the result of the malloc call to the specified type.
Instruction *CallInst::CreateMalloc(Instruction *InsertBefore,
const Type *IntPtrTy, const Type *AllocTy,
Value *AllocSize, Value *ArraySize,
Function * MallocF,
const Twine &Name) {
return createMalloc(InsertBefore, NULL, IntPtrTy, AllocTy, AllocSize,
ArraySize, MallocF, Name);
}
/// CreateMalloc - Generate the IR for a call to malloc:
/// 1. Compute the malloc call's argument as the specified type's size,
/// possibly multiplied by the array size if the array size is not
/// constant 1.
/// 2. Call malloc with that argument.
/// 3. Bitcast the result of the malloc call to the specified type.
/// Note: This function does not add the bitcast to the basic block, that is the
/// responsibility of the caller.
Instruction *CallInst::CreateMalloc(BasicBlock *InsertAtEnd,
const Type *IntPtrTy, const Type *AllocTy,
Value *AllocSize, Value *ArraySize,
Function *MallocF, const Twine &Name) {
return createMalloc(NULL, InsertAtEnd, IntPtrTy, AllocTy, AllocSize,
ArraySize, MallocF, Name);
}
static Instruction* createFree(Value* Source, Instruction *InsertBefore,
BasicBlock *InsertAtEnd) {
assert(((!InsertBefore && InsertAtEnd) || (InsertBefore && !InsertAtEnd)) &&
"createFree needs either InsertBefore or InsertAtEnd");
assert(Source->getType()->isPointerTy() &&
"Can not free something of nonpointer type!");
BasicBlock* BB = InsertBefore ? InsertBefore->getParent() : InsertAtEnd;
Module* M = BB->getParent()->getParent();
const Type *VoidTy = Type::getVoidTy(M->getContext());
const Type *IntPtrTy = Type::getInt8PtrTy(M->getContext());
// prototype free as "void free(void*)"
Value *FreeFunc = M->getOrInsertFunction("free", VoidTy, IntPtrTy, NULL);
CallInst* Result = NULL;
Value *PtrCast = Source;
if (InsertBefore) {
if (Source->getType() != IntPtrTy)
PtrCast = new BitCastInst(Source, IntPtrTy, "", InsertBefore);
Result = CallInst::Create(FreeFunc, PtrCast, "", InsertBefore);
} else {
if (Source->getType() != IntPtrTy)
PtrCast = new BitCastInst(Source, IntPtrTy, "", InsertAtEnd);
Result = CallInst::Create(FreeFunc, PtrCast, "");
}
Result->setTailCall();
if (Function *F = dyn_cast<Function>(FreeFunc))
Result->setCallingConv(F->getCallingConv());
return Result;
}
/// CreateFree - Generate the IR for a call to the builtin free function.
Instruction * CallInst::CreateFree(Value* Source, Instruction *InsertBefore) {
return createFree(Source, InsertBefore, NULL);
}
/// CreateFree - Generate the IR for a call to the builtin free function.
/// Note: This function does not add the call to the basic block, that is the
/// responsibility of the caller.
Instruction* CallInst::CreateFree(Value* Source, BasicBlock *InsertAtEnd) {
Instruction* FreeCall = createFree(Source, NULL, InsertAtEnd);
assert(FreeCall && "CreateFree did not create a CallInst");
return FreeCall;
}
//===----------------------------------------------------------------------===//
// InvokeInst Implementation
//===----------------------------------------------------------------------===//
void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
Value* const *Args, unsigned NumArgs) {
assert(NumOperands == 3+NumArgs && "NumOperands not set up?");
Op<-3>() = Fn;
Op<-2>() = IfNormal;
Op<-1>() = IfException;
const FunctionType *FTy =
cast<FunctionType>(cast<PointerType>(Fn->getType())->getElementType());
(void)FTy; // silence warning.
assert(((NumArgs == FTy->getNumParams()) ||
(FTy->isVarArg() && NumArgs > FTy->getNumParams())) &&
"Invoking a function with bad signature");
Use *OL = OperandList;
for (unsigned i = 0, e = NumArgs; i != e; i++) {
assert((i >= FTy->getNumParams() ||
FTy->getParamType(i) == Args[i]->getType()) &&
"Invoking a function with a bad signature!");
OL[i] = Args[i];
}
}
InvokeInst::InvokeInst(const InvokeInst &II)
: TerminatorInst(II.getType(), Instruction::Invoke,
OperandTraits<InvokeInst>::op_end(this)
- II.getNumOperands(),
II.getNumOperands()) {
setAttributes(II.getAttributes());
setCallingConv(II.getCallingConv());
Use *OL = OperandList, *InOL = II.OperandList;
for (unsigned i = 0, e = II.getNumOperands(); i != e; ++i)
OL[i] = InOL[i];
SubclassOptionalData = II.SubclassOptionalData;
}
BasicBlock *InvokeInst::getSuccessorV(unsigned idx) const {
return getSuccessor(idx);
}
unsigned InvokeInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
void InvokeInst::setSuccessorV(unsigned idx, BasicBlock *B) {
return setSuccessor(idx, B);
}
bool InvokeInst::paramHasAttr(unsigned i, Attributes attr) const {
if (AttributeList.paramHasAttr(i, attr))
return true;
if (const Function *F = getCalledFunction())
return F->paramHasAttr(i, attr);
return false;
}
void InvokeInst::addAttribute(unsigned i, Attributes attr) {
AttrListPtr PAL = getAttributes();
PAL = PAL.addAttr(i, attr);
setAttributes(PAL);
}
void InvokeInst::removeAttribute(unsigned i, Attributes attr) {
AttrListPtr PAL = getAttributes();
PAL = PAL.removeAttr(i, attr);
setAttributes(PAL);
}
//===----------------------------------------------------------------------===//
// ReturnInst Implementation
//===----------------------------------------------------------------------===//
ReturnInst::ReturnInst(const ReturnInst &RI)
: TerminatorInst(Type::getVoidTy(RI.getContext()), Instruction::Ret,
OperandTraits<ReturnInst>::op_end(this) -
RI.getNumOperands(),
RI.getNumOperands()) {
if (RI.getNumOperands())
Op<0>() = RI.Op<0>();
SubclassOptionalData = RI.SubclassOptionalData;
}
ReturnInst::ReturnInst(LLVMContext &C, Value *retVal, Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(C), Instruction::Ret,
OperandTraits<ReturnInst>::op_end(this) - !!retVal, !!retVal,
InsertBefore) {
if (retVal)
Op<0>() = retVal;
}
ReturnInst::ReturnInst(LLVMContext &C, Value *retVal, BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(C), Instruction::Ret,
OperandTraits<ReturnInst>::op_end(this) - !!retVal, !!retVal,
InsertAtEnd) {
if (retVal)
Op<0>() = retVal;
}
ReturnInst::ReturnInst(LLVMContext &Context, BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(Context), Instruction::Ret,
OperandTraits<ReturnInst>::op_end(this), 0, InsertAtEnd) {
}
unsigned ReturnInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
/// Out-of-line ReturnInst method, put here so the C++ compiler can choose to
/// emit the vtable for the class in this translation unit.
void ReturnInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
llvm_unreachable("ReturnInst has no successors!");
}
BasicBlock *ReturnInst::getSuccessorV(unsigned idx) const {
llvm_unreachable("ReturnInst has no successors!");
return 0;
}
ReturnInst::~ReturnInst() {
}
//===----------------------------------------------------------------------===//
// UnwindInst Implementation
//===----------------------------------------------------------------------===//
UnwindInst::UnwindInst(LLVMContext &Context, Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(Context), Instruction::Unwind,
0, 0, InsertBefore) {
}
UnwindInst::UnwindInst(LLVMContext &Context, BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(Context), Instruction::Unwind,
0, 0, InsertAtEnd) {
}
unsigned UnwindInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
void UnwindInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
llvm_unreachable("UnwindInst has no successors!");
}
BasicBlock *UnwindInst::getSuccessorV(unsigned idx) const {
llvm_unreachable("UnwindInst has no successors!");
return 0;
}
//===----------------------------------------------------------------------===//
// UnreachableInst Implementation
//===----------------------------------------------------------------------===//
UnreachableInst::UnreachableInst(LLVMContext &Context,
Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(Context), Instruction::Unreachable,
0, 0, InsertBefore) {
}
UnreachableInst::UnreachableInst(LLVMContext &Context, BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(Context), Instruction::Unreachable,
0, 0, InsertAtEnd) {
}
unsigned UnreachableInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
void UnreachableInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
llvm_unreachable("UnwindInst has no successors!");
}
BasicBlock *UnreachableInst::getSuccessorV(unsigned idx) const {
llvm_unreachable("UnwindInst has no successors!");
return 0;
}
//===----------------------------------------------------------------------===//
// BranchInst Implementation
//===----------------------------------------------------------------------===//
void BranchInst::AssertOK() {
if (isConditional())
assert(getCondition()->getType()->isIntegerTy(1) &&
"May only branch on boolean predicates!");
}
BranchInst::BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
OperandTraits<BranchInst>::op_end(this) - 1,
1, InsertBefore) {
assert(IfTrue != 0 && "Branch destination may not be null!");
Op<-1>() = IfTrue;
}
BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
OperandTraits<BranchInst>::op_end(this) - 3,
3, InsertBefore) {
Op<-1>() = IfTrue;
Op<-2>() = IfFalse;
Op<-3>() = Cond;
#ifndef NDEBUG
AssertOK();
#endif
}
BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
OperandTraits<BranchInst>::op_end(this) - 1,
1, InsertAtEnd) {
assert(IfTrue != 0 && "Branch destination may not be null!");
Op<-1>() = IfTrue;
}
BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
OperandTraits<BranchInst>::op_end(this) - 3,
3, InsertAtEnd) {
Op<-1>() = IfTrue;
Op<-2>() = IfFalse;
Op<-3>() = Cond;
#ifndef NDEBUG
AssertOK();
#endif
}
BranchInst::BranchInst(const BranchInst &BI) :
TerminatorInst(Type::getVoidTy(BI.getContext()), Instruction::Br,
OperandTraits<BranchInst>::op_end(this) - BI.getNumOperands(),
BI.getNumOperands()) {
Op<-1>() = BI.Op<-1>();
if (BI.getNumOperands() != 1) {
assert(BI.getNumOperands() == 3 && "BR can have 1 or 3 operands!");
Op<-3>() = BI.Op<-3>();
Op<-2>() = BI.Op<-2>();
}
SubclassOptionalData = BI.SubclassOptionalData;
}
BasicBlock *BranchInst::getSuccessorV(unsigned idx) const {
return getSuccessor(idx);
}
unsigned BranchInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
void BranchInst::setSuccessorV(unsigned idx, BasicBlock *B) {
setSuccessor(idx, B);
}
//===----------------------------------------------------------------------===//
// AllocaInst Implementation
//===----------------------------------------------------------------------===//
static Value *getAISize(LLVMContext &Context, Value *Amt) {
if (!Amt)
Amt = ConstantInt::get(Type::getInt32Ty(Context), 1);
else {
assert(!isa<BasicBlock>(Amt) &&
"Passed basic block into allocation size parameter! Use other ctor");
assert(Amt->getType()->isIntegerTy() &&
"Allocation array size is not an integer!");
}
return Amt;
}
AllocaInst::AllocaInst(const Type *Ty, Value *ArraySize,
const Twine &Name, Instruction *InsertBefore)
: UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
getAISize(Ty->getContext(), ArraySize), InsertBefore) {
setAlignment(0);
assert(!Ty->isVoidTy() && "Cannot allocate void!");
setName(Name);
}
AllocaInst::AllocaInst(const Type *Ty, Value *ArraySize,
const Twine &Name, BasicBlock *InsertAtEnd)
: UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
getAISize(Ty->getContext(), ArraySize), InsertAtEnd) {
setAlignment(0);
assert(!Ty->isVoidTy() && "Cannot allocate void!");
setName(Name);
}
AllocaInst::AllocaInst(const Type *Ty, const Twine &Name,
Instruction *InsertBefore)
: UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
getAISize(Ty->getContext(), 0), InsertBefore) {
setAlignment(0);
assert(!Ty->isVoidTy() && "Cannot allocate void!");
setName(Name);
}
AllocaInst::AllocaInst(const Type *Ty, const Twine &Name,
BasicBlock *InsertAtEnd)
: UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
getAISize(Ty->getContext(), 0), InsertAtEnd) {
setAlignment(0);
assert(!Ty->isVoidTy() && "Cannot allocate void!");
setName(Name);
}
AllocaInst::AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
const Twine &Name, Instruction *InsertBefore)
: UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
getAISize(Ty->getContext(), ArraySize), InsertBefore) {
setAlignment(Align);
assert(!Ty->isVoidTy() && "Cannot allocate void!");
setName(Name);
}
AllocaInst::AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
const Twine &Name, BasicBlock *InsertAtEnd)
: UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
getAISize(Ty->getContext(), ArraySize), InsertAtEnd) {
setAlignment(Align);
assert(!Ty->isVoidTy() && "Cannot allocate void!");
setName(Name);
}
// Out of line virtual method, so the vtable, etc has a home.
AllocaInst::~AllocaInst() {
}
void AllocaInst::setAlignment(unsigned Align) {
assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
assert(Align <= MaximumAlignment &&
"Alignment is greater than MaximumAlignment!");
setInstructionSubclassData(Log2_32(Align) + 1);
assert(getAlignment() == Align && "Alignment representation error!");
}
bool AllocaInst::isArrayAllocation() const {
if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(0)))
return !CI->isOne();
return true;
}
const Type *AllocaInst::getAllocatedType() const {
return getType()->getElementType();
}
/// isStaticAlloca - Return true if this alloca is in the entry block of the
/// function and is a constant size. If so, the code generator will fold it
/// into the prolog/epilog code, so it is basically free.
bool AllocaInst::isStaticAlloca() const {
// Must be constant size.
if (!isa<ConstantInt>(getArraySize())) return false;
// Must be in the entry block.
const BasicBlock *Parent = getParent();
return Parent == &Parent->getParent()->front();
}
//===----------------------------------------------------------------------===//
// LoadInst Implementation
//===----------------------------------------------------------------------===//
void LoadInst::AssertOK() {
assert(getOperand(0)->getType()->isPointerTy() &&
"Ptr must have pointer type.");
}
LoadInst::LoadInst(Value *Ptr, const Twine &Name, Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(false);
setAlignment(0);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const Twine &Name, BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(false);
setAlignment(0);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
unsigned Align, Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(isVolatile);
setAlignment(Align);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
unsigned Align, BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(isVolatile);
setAlignment(Align);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const char *Name, Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(false);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(false);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
void LoadInst::setAlignment(unsigned Align) {
assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
assert(Align <= MaximumAlignment &&
"Alignment is greater than MaximumAlignment!");
setInstructionSubclassData((getSubclassDataFromInstruction() & 1) |
((Log2_32(Align)+1)<<1));
assert(getAlignment() == Align && "Alignment representation error!");
}
//===----------------------------------------------------------------------===//
// StoreInst Implementation
//===----------------------------------------------------------------------===//
void StoreInst::AssertOK() {
assert(getOperand(0) && getOperand(1) && "Both operands must be non-null!");
assert(getOperand(1)->getType()->isPointerTy() &&
"Ptr must have pointer type!");
assert(getOperand(0)->getType() ==
cast<PointerType>(getOperand(1)->getType())->getElementType()
&& "Ptr must be a pointer to Val type!");
}
StoreInst::StoreInst(Value *val, Value *addr, Instruction *InsertBefore)
: Instruction(Type::getVoidTy(val->getContext()), Store,
OperandTraits<StoreInst>::op_begin(this),
OperandTraits<StoreInst>::operands(this),
InsertBefore) {
Op<0>() = val;
Op<1>() = addr;
setVolatile(false);
setAlignment(0);
AssertOK();
}
StoreInst::StoreInst(Value *val, Value *addr, BasicBlock *InsertAtEnd)
: Instruction(Type::getVoidTy(val->getContext()), Store,
OperandTraits<StoreInst>::op_begin(this),
OperandTraits<StoreInst>::operands(this),
InsertAtEnd) {
Op<0>() = val;
Op<1>() = addr;
setVolatile(false);
setAlignment(0);
AssertOK();
}
StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
Instruction *InsertBefore)
: Instruction(Type::getVoidTy(val->getContext()), Store,
OperandTraits<StoreInst>::op_begin(this),
OperandTraits<StoreInst>::operands(this),
InsertBefore) {
Op<0>() = val;
Op<1>() = addr;
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
}
StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
unsigned Align, Instruction *InsertBefore)
: Instruction(Type::getVoidTy(val->getContext()), Store,
OperandTraits<StoreInst>::op_begin(this),
OperandTraits<StoreInst>::operands(this),
InsertBefore) {
Op<0>() = val;
Op<1>() = addr;
setVolatile(isVolatile);
setAlignment(Align);
AssertOK();
}
StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
unsigned Align, BasicBlock *InsertAtEnd)
: Instruction(Type::getVoidTy(val->getContext()), Store,
OperandTraits<StoreInst>::op_begin(this),
OperandTraits<StoreInst>::operands(this),
InsertAtEnd) {
Op<0>() = val;
Op<1>() = addr;
setVolatile(isVolatile);
setAlignment(Align);
AssertOK();
}
StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
BasicBlock *InsertAtEnd)
: Instruction(Type::getVoidTy(val->getContext()), Store,
OperandTraits<StoreInst>::op_begin(this),
OperandTraits<StoreInst>::operands(this),
InsertAtEnd) {
Op<0>() = val;
Op<1>() = addr;
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
}
void StoreInst::setAlignment(unsigned Align) {
assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
assert(Align <= MaximumAlignment &&
"Alignment is greater than MaximumAlignment!");
setInstructionSubclassData((getSubclassDataFromInstruction() & 1) |
((Log2_32(Align)+1) << 1));
assert(getAlignment() == Align && "Alignment representation error!");
}
//===----------------------------------------------------------------------===//
// GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//
static unsigned retrieveAddrSpace(const Value *Val) {
return cast<PointerType>(Val->getType())->getAddressSpace();
}
void GetElementPtrInst::init(Value *Ptr, Value* const *Idx, unsigned NumIdx,
const Twine &Name) {
assert(NumOperands == 1+NumIdx && "NumOperands not initialized?");
Use *OL = OperandList;
OL[0] = Ptr;
for (unsigned i = 0; i != NumIdx; ++i)
OL[i+1] = Idx[i];
setName(Name);
}
void GetElementPtrInst::init(Value *Ptr, Value *Idx, const Twine &Name) {
assert(NumOperands == 2 && "NumOperands not initialized?");
Use *OL = OperandList;
OL[0] = Ptr;
OL[1] = Idx;
setName(Name);
}
GetElementPtrInst::GetElementPtrInst(const GetElementPtrInst &GEPI)
: Instruction(GEPI.getType(), GetElementPtr,
OperandTraits<GetElementPtrInst>::op_end(this)
- GEPI.getNumOperands(),
GEPI.getNumOperands()) {
Use *OL = OperandList;
Use *GEPIOL = GEPI.OperandList;
for (unsigned i = 0, E = NumOperands; i != E; ++i)
OL[i] = GEPIOL[i];
SubclassOptionalData = GEPI.SubclassOptionalData;
}
GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx,
const Twine &Name, Instruction *InBe)
: Instruction(PointerType::get(
checkType(getIndexedType(Ptr->getType(),Idx)), retrieveAddrSpace(Ptr)),
GetElementPtr,
OperandTraits<GetElementPtrInst>::op_end(this) - 2,
2, InBe) {
init(Ptr, Idx, Name);
}
GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx,
const Twine &Name, BasicBlock *IAE)
: Instruction(PointerType::get(
checkType(getIndexedType(Ptr->getType(),Idx)),
retrieveAddrSpace(Ptr)),
GetElementPtr,
OperandTraits<GetElementPtrInst>::op_end(this) - 2,
2, IAE) {
init(Ptr, Idx, Name);
}
/// getIndexedType - Returns the type of the element that would be accessed with
/// a gep instruction with the specified parameters.
///
/// The Idxs pointer should point to a continuous piece of memory containing the
/// indices, either as Value* or uint64_t.
///
/// A null type is returned if the indices are invalid for the specified
/// pointer type.
///
template <typename IndexTy>
static const Type* getIndexedTypeInternal(const Type *Ptr, IndexTy const *Idxs,
unsigned NumIdx) {
const PointerType *PTy = dyn_cast<PointerType>(Ptr);
if (!PTy) return 0; // Type isn't a pointer type!
const Type *Agg = PTy->getElementType();
// Handle the special case of the empty set index set, which is always valid.
if (NumIdx == 0)
return Agg;
// If there is at least one index, the top level type must be sized, otherwise
// it cannot be 'stepped over'. We explicitly allow abstract types (those
// that contain opaque types) under the assumption that it will be resolved to
// a sane type later.
if (!Agg->isSized() && !Agg->isAbstract())
return 0;
unsigned CurIdx = 1;
for (; CurIdx != NumIdx; ++CurIdx) {
const CompositeType *CT = dyn_cast<CompositeType>(Agg);
if (!CT || CT->isPointerTy()) return 0;
IndexTy Index = Idxs[CurIdx];
if (!CT->indexValid(Index)) return 0;
Agg = CT->getTypeAtIndex(Index);
// If the new type forwards to another type, then it is in the middle
// of being refined to another type (and hence, may have dropped all
// references to what it was using before). So, use the new forwarded
// type.
if (const Type *Ty = Agg->getForwardedType())
Agg = Ty;
}
return CurIdx == NumIdx ? Agg : 0;
}
const Type* GetElementPtrInst::getIndexedType(const Type *Ptr,
Value* const *Idxs,
unsigned NumIdx) {
return getIndexedTypeInternal(Ptr, Idxs, NumIdx);
}
const Type* GetElementPtrInst::getIndexedType(const Type *Ptr,
Constant* const *Idxs,
unsigned NumIdx) {
return getIndexedTypeInternal(Ptr, Idxs, NumIdx);
}
const Type* GetElementPtrInst::getIndexedType(const Type *Ptr,
uint64_t const *Idxs,
unsigned NumIdx) {
return getIndexedTypeInternal(Ptr, Idxs, NumIdx);
}
const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, Value *Idx) {
const PointerType *PTy = dyn_cast<PointerType>(Ptr);
if (!PTy) return 0; // Type isn't a pointer type!
// Check the pointer index.
if (!PTy->indexValid(Idx)) return 0;
return PTy->getElementType();
}
/// hasAllZeroIndices - Return true if all of the indices of this GEP are
/// zeros. If so, the result pointer and the first operand have the same
/// value, just potentially different types.
bool GetElementPtrInst::hasAllZeroIndices() const {
for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(i))) {
if (!CI->isZero()) return false;
} else {
return false;
}
}
return true;
}
/// hasAllConstantIndices - Return true if all of the indices of this GEP are
/// constant integers. If so, the result pointer and the first operand have
/// a constant offset between them.
bool GetElementPtrInst::hasAllConstantIndices() const {
for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
if (!isa<ConstantInt>(getOperand(i)))
return false;
}
return true;
}
void GetElementPtrInst::setIsInBounds(bool B) {
cast<GEPOperator>(this)->setIsInBounds(B);
}
bool GetElementPtrInst::isInBounds() const {
return cast<GEPOperator>(this)->isInBounds();
}
//===----------------------------------------------------------------------===//
// ExtractElementInst Implementation
//===----------------------------------------------------------------------===//
ExtractElementInst::ExtractElementInst(Value *Val, Value *Index,
const Twine &Name,
Instruction *InsertBef)
: Instruction(cast<VectorType>(Val->getType())->getElementType(),
ExtractElement,
OperandTraits<ExtractElementInst>::op_begin(this),
2, InsertBef) {
assert(isValidOperands(Val, Index) &&
"Invalid extractelement instruction operands!");
Op<0>() = Val;
Op<1>() = Index;
setName(Name);
}
ExtractElementInst::ExtractElementInst(Value *Val, Value *Index,
const Twine &Name,
BasicBlock *InsertAE)
: Instruction(cast<VectorType>(Val->getType())->getElementType(),
ExtractElement,
OperandTraits<ExtractElementInst>::op_begin(this),
2, InsertAE) {
assert(isValidOperands(Val, Index) &&
"Invalid extractelement instruction operands!");
Op<0>() = Val;
Op<1>() = Index;
setName(Name);
}
bool ExtractElementInst::isValidOperands(const Value *Val, const Value *Index) {
if (!Val->getType()->isVectorTy() || !Index->getType()->isIntegerTy(32))
return false;
return true;
}
//===----------------------------------------------------------------------===//
// InsertElementInst Implementation
//===----------------------------------------------------------------------===//
InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index,
const Twine &Name,
Instruction *InsertBef)
: Instruction(Vec->getType(), InsertElement,
OperandTraits<InsertElementInst>::op_begin(this),
3, InsertBef) {
assert(isValidOperands(Vec, Elt, Index) &&
"Invalid insertelement instruction operands!");
Op<0>() = Vec;
Op<1>() = Elt;
Op<2>() = Index;
setName(Name);
}
InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index,
const Twine &Name,
BasicBlock *InsertAE)
: Instruction(Vec->getType(), InsertElement,
OperandTraits<InsertElementInst>::op_begin(this),
3, InsertAE) {
assert(isValidOperands(Vec, Elt, Index) &&
"Invalid insertelement instruction operands!");
Op<0>() = Vec;
Op<1>() = Elt;
Op<2>() = Index;
setName(Name);
}
bool InsertElementInst::isValidOperands(const Value *Vec, const Value *Elt,
const Value *Index) {
if (!Vec->getType()->isVectorTy())
return false; // First operand of insertelement must be vector type.
if (Elt->getType() != cast<VectorType>(Vec->getType())->getElementType())
return false;// Second operand of insertelement must be vector element type.
if (!Index->getType()->isIntegerTy(32))
return false; // Third operand of insertelement must be i32.
return true;
}
//===----------------------------------------------------------------------===//
// ShuffleVectorInst Implementation
//===----------------------------------------------------------------------===//
ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
const Twine &Name,
Instruction *InsertBefore)
: Instruction(VectorType::get(cast<VectorType>(V1->getType())->getElementType(),
cast<VectorType>(Mask->getType())->getNumElements()),
ShuffleVector,
OperandTraits<ShuffleVectorInst>::op_begin(this),
OperandTraits<ShuffleVectorInst>::operands(this),
InsertBefore) {
assert(isValidOperands(V1, V2, Mask) &&
"Invalid shuffle vector instruction operands!");
Op<0>() = V1;
Op<1>() = V2;
Op<2>() = Mask;
setName(Name);
}
ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
const Twine &Name,
BasicBlock *InsertAtEnd)
: Instruction(VectorType::get(cast<VectorType>(V1->getType())->getElementType(),
cast<VectorType>(Mask->getType())->getNumElements()),
ShuffleVector,
OperandTraits<ShuffleVectorInst>::op_begin(this),
OperandTraits<ShuffleVectorInst>::operands(this),
InsertAtEnd) {
assert(isValidOperands(V1, V2, Mask) &&
"Invalid shuffle vector instruction operands!");
Op<0>() = V1;
Op<1>() = V2;
Op<2>() = Mask;
setName(Name);
}
bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2,
const Value *Mask) {
if (!V1->getType()->isVectorTy() || V1->getType() != V2->getType())
return false;
const VectorType *MaskTy = dyn_cast<VectorType>(Mask->getType());
if (MaskTy == 0 || !MaskTy->getElementType()->isIntegerTy(32))
return false;
// Check to see if Mask is valid.
if (const ConstantVector *MV = dyn_cast<ConstantVector>(Mask)) {
const VectorType *VTy = cast<VectorType>(V1->getType());
for (unsigned i = 0, e = MV->getNumOperands(); i != e; ++i) {
if (ConstantInt* CI = dyn_cast<ConstantInt>(MV->getOperand(i))) {
if (CI->uge(VTy->getNumElements()*2))
return false;
} else if (!isa<UndefValue>(MV->getOperand(i))) {
return false;
}
}
}
else if (!isa<UndefValue>(Mask) && !isa<ConstantAggregateZero>(Mask))
return false;
return true;
}
/// getMaskValue - Return the index from the shuffle mask for the specified
/// output result. This is either -1 if the element is undef or a number less
/// than 2*numelements.
int ShuffleVectorInst::getMaskValue(unsigned i) const {
const Constant *Mask = cast<Constant>(getOperand(2));
if (isa<UndefValue>(Mask)) return -1;
if (isa<ConstantAggregateZero>(Mask)) return 0;
const ConstantVector *MaskCV = cast<ConstantVector>(Mask);
assert(i < MaskCV->getNumOperands() && "Index out of range");
if (isa<UndefValue>(MaskCV->getOperand(i)))
return -1;
return cast<ConstantInt>(MaskCV->getOperand(i))->getZExtValue();
}
//===----------------------------------------------------------------------===//
// InsertValueInst Class
//===----------------------------------------------------------------------===//
void InsertValueInst::init(Value *Agg, Value *Val, const unsigned *Idx,
unsigned NumIdx, const Twine &Name) {
assert(NumOperands == 2 && "NumOperands not initialized?");
assert(ExtractValueInst::getIndexedType(Agg->getType(), Idx, Idx + NumIdx) ==
Val->getType() && "Inserted value must match indexed type!");
Op<0>() = Agg;
Op<1>() = Val;
Indices.append(Idx, Idx + NumIdx);
setName(Name);
}
void InsertValueInst::init(Value *Agg, Value *Val, unsigned Idx,
const Twine &Name) {
assert(NumOperands == 2 && "NumOperands not initialized?");
assert(ExtractValueInst::getIndexedType(Agg->getType(), Idx) == Val->getType()
&& "Inserted value must match indexed type!");
Op<0>() = Agg;
Op<1>() = Val;
Indices.push_back(Idx);
setName(Name);
}
InsertValueInst::InsertValueInst(const InsertValueInst &IVI)
: Instruction(IVI.getType(), InsertValue,
OperandTraits<InsertValueInst>::op_begin(this), 2),
Indices(IVI.Indices) {
Op<0>() = IVI.getOperand(0);
Op<1>() = IVI.getOperand(1);
SubclassOptionalData = IVI.SubclassOptionalData;
}
InsertValueInst::InsertValueInst(Value *Agg,
Value *Val,
unsigned Idx,
const Twine &Name,
Instruction *InsertBefore)
: Instruction(Agg->getType(), InsertValue,
OperandTraits<InsertValueInst>::op_begin(this),
2, InsertBefore) {
init(Agg, Val, Idx, Name);
}
InsertValueInst::InsertValueInst(Value *Agg,
Value *Val,
unsigned Idx,
const Twine &Name,
BasicBlock *InsertAtEnd)
: Instruction(Agg->getType(), InsertValue,
OperandTraits<InsertValueInst>::op_begin(this),
2, InsertAtEnd) {
init(Agg, Val, Idx, Name);
}
//===----------------------------------------------------------------------===//
// ExtractValueInst Class
//===----------------------------------------------------------------------===//
void ExtractValueInst::init(const unsigned *Idx, unsigned NumIdx,
const Twine &Name) {
assert(NumOperands == 1 && "NumOperands not initialized?");
Indices.append(Idx, Idx + NumIdx);
setName(Name);
}
void ExtractValueInst::init(unsigned Idx, const Twine &Name) {
assert(NumOperands == 1 && "NumOperands not initialized?");
Indices.push_back(Idx);
setName(Name);
}
ExtractValueInst::ExtractValueInst(const ExtractValueInst &EVI)
: UnaryInstruction(EVI.getType(), ExtractValue, EVI.getOperand(0)),
Indices(EVI.Indices) {
SubclassOptionalData = EVI.SubclassOptionalData;
}
// getIndexedType - Returns the type of the element that would be extracted
// with an extractvalue instruction with the specified parameters.
//
// A null type is returned if the indices are invalid for the specified
// pointer type.
//
const Type* ExtractValueInst::getIndexedType(const Type *Agg,
const unsigned *Idxs,
unsigned NumIdx) {
for (unsigned CurIdx = 0; CurIdx != NumIdx; ++CurIdx) {
unsigned Index = Idxs[CurIdx];
// We can't use CompositeType::indexValid(Index) here.
// indexValid() always returns true for arrays because getelementptr allows
// out-of-bounds indices. Since we don't allow those for extractvalue and
// insertvalue we need to check array indexing manually.
// Since the only other types we can index into are struct types it's just
// as easy to check those manually as well.
if (const ArrayType *AT = dyn_cast<ArrayType>(Agg)) {
if (Index >= AT->getNumElements())
return 0;
} else if (const StructType *ST = dyn_cast<StructType>(Agg)) {
if (Index >= ST->getNumElements())
return 0;
} else {
// Not a valid type to index into.
return 0;
}
Agg = cast<CompositeType>(Agg)->getTypeAtIndex(Index);
// If the new type forwards to another type, then it is in the middle
// of being refined to another type (and hence, may have dropped all
// references to what it was using before). So, use the new forwarded
// type.
if (const Type *Ty = Agg->getForwardedType())
Agg = Ty;
}
return Agg;
}
const Type* ExtractValueInst::getIndexedType(const Type *Agg,
unsigned Idx) {
return getIndexedType(Agg, &Idx, 1);
}
//===----------------------------------------------------------------------===//
// BinaryOperator Class
//===----------------------------------------------------------------------===//
BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2,
const Type *Ty, const Twine &Name,
Instruction *InsertBefore)
: Instruction(Ty, iType,
OperandTraits<BinaryOperator>::op_begin(this),
OperandTraits<BinaryOperator>::operands(this),
InsertBefore) {
Op<0>() = S1;
Op<1>() = S2;
init(iType);
setName(Name);
}
BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2,
const Type *Ty, const Twine &Name,
BasicBlock *InsertAtEnd)
: Instruction(Ty, iType,
OperandTraits<BinaryOperator>::op_begin(this),
OperandTraits<BinaryOperator>::operands(this),
InsertAtEnd) {
Op<0>() = S1;
Op<1>() = S2;
init(iType);
setName(Name);
}
void BinaryOperator::init(BinaryOps iType) {
Value *LHS = getOperand(0), *RHS = getOperand(1);
(void)LHS; (void)RHS; // Silence warnings.
assert(LHS->getType() == RHS->getType() &&
"Binary operator operand types must match!");
#ifndef NDEBUG
switch (iType) {
case Add: case Sub:
case Mul:
assert(getType() == LHS->getType() &&
"Arithmetic operation should return same type as operands!");
assert(getType()->isIntOrIntVectorTy() &&
"Tried to create an integer operation on a non-integer type!");
break;
case FAdd: case FSub:
case FMul:
assert(getType() == LHS->getType() &&
"Arithmetic operation should return same type as operands!");
assert(getType()->isFPOrFPVectorTy() &&
"Tried to create a floating-point operation on a "
"non-floating-point type!");
break;
case UDiv:
case SDiv:
assert(getType() == LHS->getType() &&
"Arithmetic operation should return same type as operands!");
assert((getType()->isIntegerTy() || (getType()->isVectorTy() &&
cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
"Incorrect operand type (not integer) for S/UDIV");
break;
case FDiv:
assert(getType() == LHS->getType() &&
"Arithmetic operation should return same type as operands!");
assert(getType()->isFPOrFPVectorTy() &&
"Incorrect operand type (not floating point) for FDIV");
break;
case URem:
case SRem:
assert(getType() == LHS->getType() &&
"Arithmetic operation should return same type as operands!");
assert((getType()->isIntegerTy() || (getType()->isVectorTy() &&
cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
"Incorrect operand type (not integer) for S/UREM");
break;
case FRem:
assert(getType() == LHS->getType() &&
"Arithmetic operation should return same type as operands!");
assert(getType()->isFPOrFPVectorTy() &&
"Incorrect operand type (not floating point) for FREM");
break;
case Shl:
case LShr:
case AShr:
assert(getType() == LHS->getType() &&
"Shift operation should return same type as operands!");
assert((getType()->isIntegerTy() ||
(getType()->isVectorTy() &&
cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
"Tried to create a shift operation on a non-integral type!");
break;
case And: case Or:
case Xor:
assert(getType() == LHS->getType() &&
"Logical operation should return same type as operands!");
assert((getType()->isIntegerTy() ||
(getType()->isVectorTy() &&
cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
"Tried to create a logical operation on a non-integral type!");
break;
default:
break;
}
#endif
}
BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
const Twine &Name,
Instruction *InsertBefore) {
assert(S1->getType() == S2->getType() &&
"Cannot create binary operator with two operands of differing type!");
return new BinaryOperator(Op, S1, S2, S1->getType(), Name, InsertBefore);
}
BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
const Twine &Name,
BasicBlock *InsertAtEnd) {
BinaryOperator *Res = Create(Op, S1, S2, Name);
InsertAtEnd->getInstList().push_back(Res);
return Res;
}
BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return new BinaryOperator(Instruction::Sub,
zero, Op,
Op->getType(), Name, InsertBefore);
}
BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return new BinaryOperator(Instruction::Sub,
zero, Op,
Op->getType(), Name, InsertAtEnd);
}
BinaryOperator *BinaryOperator::CreateNSWNeg(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return BinaryOperator::CreateNSWSub(zero, Op, Name, InsertBefore);
}
BinaryOperator *BinaryOperator::CreateNSWNeg(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return BinaryOperator::CreateNSWSub(zero, Op, Name, InsertAtEnd);
}
BinaryOperator *BinaryOperator::CreateNUWNeg(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return BinaryOperator::CreateNUWSub(zero, Op, Name, InsertBefore);
}
BinaryOperator *BinaryOperator::CreateNUWNeg(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return BinaryOperator::CreateNUWSub(zero, Op, Name, InsertAtEnd);
}
BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return new BinaryOperator(Instruction::FSub,
zero, Op,
Op->getType(), Name, InsertBefore);
}
BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
return new BinaryOperator(Instruction::FSub,
zero, Op,
Op->getType(), Name, InsertAtEnd);
}
BinaryOperator *BinaryOperator::CreateNot(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
Constant *C;
if (const VectorType *PTy = dyn_cast<VectorType>(Op->getType())) {
C = Constant::getAllOnesValue(PTy->getElementType());
C = ConstantVector::get(
std::vector<Constant*>(PTy->getNumElements(), C));
} else {
C = Constant::getAllOnesValue(Op->getType());
}
return new BinaryOperator(Instruction::Xor, Op, C,
Op->getType(), Name, InsertBefore);
}
BinaryOperator *BinaryOperator::CreateNot(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd) {
Constant *AllOnes;
if (const VectorType *PTy = dyn_cast<VectorType>(Op->getType())) {
// Create a vector of all ones values.
Constant *Elt = Constant::getAllOnesValue(PTy->getElementType());
AllOnes = ConstantVector::get(
std::vector<Constant*>(PTy->getNumElements(), Elt));
} else {
AllOnes = Constant::getAllOnesValue(Op->getType());
}
return new BinaryOperator(Instruction::Xor, Op, AllOnes,
Op->getType(), Name, InsertAtEnd);
}
// isConstantAllOnes - Helper function for several functions below
static inline bool isConstantAllOnes(const Value *V) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
return CI->isAllOnesValue();
if (const ConstantVector *CV = dyn_cast<ConstantVector>(V))
return CV->isAllOnesValue();
return false;
}
bool BinaryOperator::isNeg(const Value *V) {
if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
if (Bop->getOpcode() == Instruction::Sub)
if (Constant* C = dyn_cast<Constant>(Bop->getOperand(0)))
return C->isNegativeZeroValue();
return false;
}
bool BinaryOperator::isFNeg(const Value *V) {
if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
if (Bop->getOpcode() == Instruction::FSub)
if (Constant* C = dyn_cast<Constant>(Bop->getOperand(0)))
return C->isNegativeZeroValue();
return false;
}
bool BinaryOperator::isNot(const Value *V) {
if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
return (Bop->getOpcode() == Instruction::Xor &&
(isConstantAllOnes(Bop->getOperand(1)) ||
isConstantAllOnes(Bop->getOperand(0))));
return false;
}
Value *BinaryOperator::getNegArgument(Value *BinOp) {
return cast<BinaryOperator>(BinOp)->getOperand(1);
}
const Value *BinaryOperator::getNegArgument(const Value *BinOp) {
return getNegArgument(const_cast<Value*>(BinOp));
}
Value *BinaryOperator::getFNegArgument(Value *BinOp) {
return cast<BinaryOperator>(BinOp)->getOperand(1);
}
const Value *BinaryOperator::getFNegArgument(const Value *BinOp) {
return getFNegArgument(const_cast<Value*>(BinOp));
}
Value *BinaryOperator::getNotArgument(Value *BinOp) {
assert(isNot(BinOp) && "getNotArgument on non-'not' instruction!");
BinaryOperator *BO = cast<BinaryOperator>(BinOp);
Value *Op0 = BO->getOperand(0);
Value *Op1 = BO->getOperand(1);
if (isConstantAllOnes(Op0)) return Op1;
assert(isConstantAllOnes(Op1));
return Op0;
}
const Value *BinaryOperator::getNotArgument(const Value *BinOp) {
return getNotArgument(const_cast<Value*>(BinOp));
}
// swapOperands - Exchange the two operands to this instruction. This
// instruction is safe to use on any binary instruction and does not
// modify the semantics of the instruction. If the instruction is
// order dependent (SetLT f.e.) the opcode is changed.
//
bool BinaryOperator::swapOperands() {
if (!isCommutative())
return true; // Can't commute operands
Op<0>().swap(Op<1>());
return false;
}
void BinaryOperator::setHasNoUnsignedWrap(bool b) {
cast<OverflowingBinaryOperator>(this)->setHasNoUnsignedWrap(b);
}
void BinaryOperator::setHasNoSignedWrap(bool b) {
cast<OverflowingBinaryOperator>(this)->setHasNoSignedWrap(b);
}
void BinaryOperator::setIsExact(bool b) {
cast<PossiblyExactOperator>(this)->setIsExact(b);
}
bool BinaryOperator::hasNoUnsignedWrap() const {
return cast<OverflowingBinaryOperator>(this)->hasNoUnsignedWrap();
}
bool BinaryOperator::hasNoSignedWrap() const {
return cast<OverflowingBinaryOperator>(this)->hasNoSignedWrap();
}
bool BinaryOperator::isExact() const {
return cast<PossiblyExactOperator>(this)->isExact();
}
//===----------------------------------------------------------------------===//
// CastInst Class
//===----------------------------------------------------------------------===//
// Just determine if this cast only deals with integral->integral conversion.
bool CastInst::isIntegerCast() const {
switch (getOpcode()) {
default: return false;
case Instruction::ZExt:
case Instruction::SExt:
case Instruction::Trunc:
return true;
case Instruction::BitCast:
return getOperand(0)->getType()->isIntegerTy() &&
getType()->isIntegerTy();
}
}
bool CastInst::isLosslessCast() const {
// Only BitCast can be lossless, exit fast if we're not BitCast
if (getOpcode() != Instruction::BitCast)
return false;
// Identity cast is always lossless
const Type* SrcTy = getOperand(0)->getType();
const Type* DstTy = getType();
if (SrcTy == DstTy)
return true;
// Pointer to pointer is always lossless.
if (SrcTy->isPointerTy())
return DstTy->isPointerTy();
return false; // Other types have no identity values
}
/// This function determines if the CastInst does not require any bits to be
/// changed in order to effect the cast. Essentially, it identifies cases where
/// no code gen is necessary for the cast, hence the name no-op cast. For
/// example, the following are all no-op casts:
/// # bitcast i32* %x to i8*
/// # bitcast <2 x i32> %x to <4 x i16>
/// # ptrtoint i32* %x to i32 ; on 32-bit plaforms only
/// @brief Determine if the described cast is a no-op.
bool CastInst::isNoopCast(Instruction::CastOps Opcode,
const Type *SrcTy,
const Type *DestTy,
const Type *IntPtrTy) {
switch (Opcode) {
default:
assert(!"Invalid CastOp");
case Instruction::Trunc:
case Instruction::ZExt:
case Instruction::SExt:
case Instruction::FPTrunc:
case Instruction::FPExt:
case Instruction::UIToFP:
case Instruction::SIToFP:
case Instruction::FPToUI:
case Instruction::FPToSI:
return false; // These always modify bits
case Instruction::BitCast:
return true; // BitCast never modifies bits.
case Instruction::PtrToInt:
return IntPtrTy->getScalarSizeInBits() ==
DestTy->getScalarSizeInBits();
case Instruction::IntToPtr:
return IntPtrTy->getScalarSizeInBits() ==
SrcTy->getScalarSizeInBits();
}
}
/// @brief Determine if a cast is a no-op.
bool CastInst::isNoopCast(const Type *IntPtrTy) const {
return isNoopCast(getOpcode(), getOperand(0)->getType(), getType(), IntPtrTy);
}
/// This function determines if a pair of casts can be eliminated and what
/// opcode should be used in the elimination. This assumes that there are two
/// instructions like this:
/// * %F = firstOpcode SrcTy %x to MidTy
/// * %S = secondOpcode MidTy %F to DstTy
/// The function returns a resultOpcode so these two casts can be replaced with:
/// * %Replacement = resultOpcode %SrcTy %x to DstTy
/// If no such cast is permited, the function returns 0.
unsigned CastInst::isEliminableCastPair(
Instruction::CastOps firstOp, Instruction::CastOps secondOp,
const Type *SrcTy, const Type *MidTy, const Type *DstTy, const Type *IntPtrTy)
{
// Define the 144 possibilities for these two cast instructions. The values
// in this matrix determine what to do in a given situation and select the
// case in the switch below. The rows correspond to firstOp, the columns
// correspond to secondOp. In looking at the table below, keep in mind
// the following cast properties:
//
// Size Compare Source Destination
// Operator Src ? Size Type Sign Type Sign
// -------- ------------ ------------------- ---------------------
// TRUNC > Integer Any Integral Any
// ZEXT < Integral Unsigned Integer Any
// SEXT < Integral Signed Integer Any
// FPTOUI n/a FloatPt n/a Integral Unsigned
// FPTOSI n/a FloatPt n/a Integral Signed
// UITOFP n/a Integral Unsigned FloatPt n/a
// SITOFP n/a Integral Signed FloatPt n/a
// FPTRUNC > FloatPt n/a FloatPt n/a
// FPEXT < FloatPt n/a FloatPt n/a
// PTRTOINT n/a Pointer n/a Integral Unsigned
// INTTOPTR n/a Integral Unsigned Pointer n/a
// BITCAST = FirstClass n/a FirstClass n/a
//
// NOTE: some transforms are safe, but we consider them to be non-profitable.
// For example, we could merge "fptoui double to i32" + "zext i32 to i64",
// into "fptoui double to i64", but this loses information about the range
// of the produced value (we no longer know the top-part is all zeros).
// Further this conversion is often much more expensive for typical hardware,
// and causes issues when building libgcc. We disallow fptosi+sext for the
// same reason.
const unsigned numCastOps =
Instruction::CastOpsEnd - Instruction::CastOpsBegin;
static const uint8_t CastResults[numCastOps][numCastOps] = {
// T F F U S F F P I B -+
// R Z S P P I I T P 2 N T |
// U E E 2 2 2 2 R E I T C +- secondOp
// N X X U S F F N X N 2 V |
// C T T I I P P C T T P T -+
{ 1, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // Trunc -+
{ 8, 1, 9,99,99, 2, 0,99,99,99, 2, 3 }, // ZExt |
{ 8, 0, 1,99,99, 0, 2,99,99,99, 0, 3 }, // SExt |
{ 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // FPToUI |
{ 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // FPToSI |
{ 99,99,99, 0, 0,99,99, 0, 0,99,99, 4 }, // UIToFP +- firstOp
{ 99,99,99, 0, 0,99,99, 0, 0,99,99, 4 }, // SIToFP |
{ 99,99,99, 0, 0,99,99, 1, 0,99,99, 4 }, // FPTrunc |
{ 99,99,99, 2, 2,99,99,10, 2,99,99, 4 }, // FPExt |
{ 1, 0, 0,99,99, 0, 0,99,99,99, 7, 3 }, // PtrToInt |
{ 99,99,99,99,99,99,99,99,99,13,99,12 }, // IntToPtr |
{ 5, 5, 5, 6, 6, 5, 5, 6, 6,11, 5, 1 }, // BitCast -+
};
// If either of the casts are a bitcast from scalar to vector, disallow the
// merging.
if ((firstOp == Instruction::BitCast &&
isa<VectorType>(SrcTy) != isa<VectorType>(MidTy)) ||
(secondOp == Instruction::BitCast &&
isa<VectorType>(MidTy) != isa<VectorType>(DstTy)))
return 0; // Disallowed
int ElimCase = CastResults[firstOp-Instruction::CastOpsBegin]
[secondOp-Instruction::CastOpsBegin];
switch (ElimCase) {
case 0:
// categorically disallowed
return 0;
case 1:
// allowed, use first cast's opcode
return firstOp;
case 2:
// allowed, use second cast's opcode
return secondOp;
case 3:
// no-op cast in second op implies firstOp as long as the DestTy
// is integer and we are not converting between a vector and a
// non vector type.
if (!SrcTy->isVectorTy() && DstTy->isIntegerTy())
return firstOp;
return 0;
case 4:
// no-op cast in second op implies firstOp as long as the DestTy
// is floating point.
if (DstTy->isFloatingPointTy())
return firstOp;
return 0;
case 5:
// no-op cast in first op implies secondOp as long as the SrcTy
// is an integer.
if (SrcTy->isIntegerTy())
return secondOp;
return 0;
case 6:
// no-op cast in first op implies secondOp as long as the SrcTy
// is a floating point.
if (SrcTy->isFloatingPointTy())
return secondOp;
return 0;
case 7: {
// ptrtoint, inttoptr -> bitcast (ptr -> ptr) if int size is >= ptr size
if (!IntPtrTy)
return 0;
unsigned PtrSize = IntPtrTy->getScalarSizeInBits();
unsigned MidSize = MidTy->getScalarSizeInBits();
if (MidSize >= PtrSize)
return Instruction::BitCast;
return 0;
}
case 8: {
// ext, trunc -> bitcast, if the SrcTy and DstTy are same size
// ext, trunc -> ext, if sizeof(SrcTy) < sizeof(DstTy)
// ext, trunc -> trunc, if sizeof(SrcTy) > sizeof(DstTy)
unsigned SrcSize = SrcTy->getScalarSizeInBits();
unsigned DstSize = DstTy->getScalarSizeInBits();
if (SrcSize == DstSize)
return Instruction::BitCast;
else if (SrcSize < DstSize)
return firstOp;
return secondOp;
}
case 9: // zext, sext -> zext, because sext can't sign extend after zext
return Instruction::ZExt;
case 10:
// fpext followed by ftrunc is allowed if the bit size returned to is
// the same as the original, in which case its just a bitcast
if (SrcTy == DstTy)
return Instruction::BitCast;
return 0; // If the types are not the same we can't eliminate it.
case 11:
// bitcast followed by ptrtoint is allowed as long as the bitcast
// is a pointer to pointer cast.
if (SrcTy->isPointerTy() && MidTy->isPointerTy())
return secondOp;
return 0;
case 12:
// inttoptr, bitcast -> intptr if bitcast is a ptr to ptr cast
if (MidTy->isPointerTy() && DstTy->isPointerTy())
return firstOp;
return 0;
case 13: {
// inttoptr, ptrtoint -> bitcast if SrcSize<=PtrSize and SrcSize==DstSize
if (!IntPtrTy)
return 0;
unsigned PtrSize = IntPtrTy->getScalarSizeInBits();
unsigned SrcSize = SrcTy->getScalarSizeInBits();
unsigned DstSize = DstTy->getScalarSizeInBits();
if (SrcSize <= PtrSize && SrcSize == DstSize)
return Instruction::BitCast;
return 0;
}
case 99:
// cast combination can't happen (error in input). This is for all cases
// where the MidTy is not the same for the two cast instructions.
assert(!"Invalid Cast Combination");
return 0;
default:
assert(!"Error in CastResults table!!!");
return 0;
}
return 0;
}
CastInst *CastInst::Create(Instruction::CastOps op, Value *S, const Type *Ty,
const Twine &Name, Instruction *InsertBefore) {
assert(castIsValid(op, S, Ty) && "Invalid cast!");
// Construct and return the appropriate CastInst subclass
switch (op) {
case Trunc: return new TruncInst (S, Ty, Name, InsertBefore);
case ZExt: return new ZExtInst (S, Ty, Name, InsertBefore);
case SExt: return new SExtInst (S, Ty, Name, InsertBefore);
case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertBefore);
case FPExt: return new FPExtInst (S, Ty, Name, InsertBefore);
case UIToFP: return new UIToFPInst (S, Ty, Name, InsertBefore);
case SIToFP: return new SIToFPInst (S, Ty, Name, InsertBefore);
case FPToUI: return new FPToUIInst (S, Ty, Name, InsertBefore);
case FPToSI: return new FPToSIInst (S, Ty, Name, InsertBefore);
case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertBefore);
case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertBefore);
case BitCast: return new BitCastInst (S, Ty, Name, InsertBefore);
default:
assert(!"Invalid opcode provided");
}
return 0;
}
CastInst *CastInst::Create(Instruction::CastOps op, Value *S, const Type *Ty,
const Twine &Name, BasicBlock *InsertAtEnd) {
assert(castIsValid(op, S, Ty) && "Invalid cast!");
// Construct and return the appropriate CastInst subclass
switch (op) {
case Trunc: return new TruncInst (S, Ty, Name, InsertAtEnd);
case ZExt: return new ZExtInst (S, Ty, Name, InsertAtEnd);
case SExt: return new SExtInst (S, Ty, Name, InsertAtEnd);
case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertAtEnd);
case FPExt: return new FPExtInst (S, Ty, Name, InsertAtEnd);
case UIToFP: return new UIToFPInst (S, Ty, Name, InsertAtEnd);
case SIToFP: return new SIToFPInst (S, Ty, Name, InsertAtEnd);
case FPToUI: return new FPToUIInst (S, Ty, Name, InsertAtEnd);
case FPToSI: return new FPToSIInst (S, Ty, Name, InsertAtEnd);
case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertAtEnd);
case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertAtEnd);
case BitCast: return new BitCastInst (S, Ty, Name, InsertAtEnd);
default:
assert(!"Invalid opcode provided");
}
return 0;
}
CastInst *CastInst::CreateZExtOrBitCast(Value *S, const Type *Ty,
const Twine &Name,
Instruction *InsertBefore) {
if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
return Create(Instruction::ZExt, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::CreateZExtOrBitCast(Value *S, const Type *Ty,
const Twine &Name,
BasicBlock *InsertAtEnd) {
if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
return Create(Instruction::ZExt, S, Ty, Name, InsertAtEnd);
}
CastInst *CastInst::CreateSExtOrBitCast(Value *S, const Type *Ty,
const Twine &Name,
Instruction *InsertBefore) {
if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
return Create(Instruction::SExt, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::CreateSExtOrBitCast(Value *S, const Type *Ty,
const Twine &Name,
BasicBlock *InsertAtEnd) {
if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
return Create(Instruction::SExt, S, Ty, Name, InsertAtEnd);
}
CastInst *CastInst::CreateTruncOrBitCast(Value *S, const Type *Ty,
const Twine &Name,
Instruction *InsertBefore) {
if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
return Create(Instruction::Trunc, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::CreateTruncOrBitCast(Value *S, const Type *Ty,
const Twine &Name,
BasicBlock *InsertAtEnd) {
if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
return Create(Instruction::Trunc, S, Ty, Name, InsertAtEnd);
}
CastInst *CastInst::CreatePointerCast(Value *S, const Type *Ty,
const Twine &Name,
BasicBlock *InsertAtEnd) {
assert(S->getType()->isPointerTy() && "Invalid cast");
assert((Ty->isIntegerTy() || Ty->isPointerTy()) &&
"Invalid cast");
if (Ty->isIntegerTy())
return Create(Instruction::PtrToInt, S, Ty, Name, InsertAtEnd);
return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
}
/// @brief Create a BitCast or a PtrToInt cast instruction
CastInst *CastInst::CreatePointerCast(Value *S, const Type *Ty,
const Twine &Name,
Instruction *InsertBefore) {
assert(S->getType()->isPointerTy() && "Invalid cast");
assert((Ty->isIntegerTy() || Ty->isPointerTy()) &&
"Invalid cast");
if (Ty->isIntegerTy())
return Create(Instruction::PtrToInt, S, Ty, Name, InsertBefore);
return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::CreateIntegerCast(Value *C, const Type *Ty,
bool isSigned, const Twine &Name,
Instruction *InsertBefore) {
assert(C->getType()->isIntOrIntVectorTy() && Ty->isIntOrIntVectorTy() &&
"Invalid integer cast");
unsigned SrcBits = C->getType()->getScalarSizeInBits();
unsigned DstBits = Ty->getScalarSizeInBits();
Instruction::CastOps opcode =
(SrcBits == DstBits ? Instruction::BitCast :
(SrcBits > DstBits ? Instruction::Trunc :
(isSigned ? Instruction::SExt : Instruction::ZExt)));
return Create(opcode, C, Ty, Name, InsertBefore);
}
CastInst *CastInst::CreateIntegerCast(Value *C, const Type *Ty,
bool isSigned, const Twine &Name,
BasicBlock *InsertAtEnd) {
assert(C->getType()->isIntOrIntVectorTy() && Ty->isIntOrIntVectorTy() &&
"Invalid cast");
unsigned SrcBits = C->getType()->getScalarSizeInBits();
unsigned DstBits = Ty->getScalarSizeInBits();
Instruction::CastOps opcode =
(SrcBits == DstBits ? Instruction::BitCast :
(SrcBits > DstBits ? Instruction::Trunc :
(isSigned ? Instruction::SExt : Instruction::ZExt)));
return Create(opcode, C, Ty, Name, InsertAtEnd);
}
CastInst *CastInst::CreateFPCast(Value *C, const Type *Ty,
const Twine &Name,
Instruction *InsertBefore) {
assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() &&
"Invalid cast");
unsigned SrcBits = C->getType()->getScalarSizeInBits();
unsigned DstBits = Ty->getScalarSizeInBits();
Instruction::CastOps opcode =
(SrcBits == DstBits ? Instruction::BitCast :
(SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
return Create(opcode, C, Ty, Name, InsertBefore);
}
CastInst *CastInst::CreateFPCast(Value *C, const Type *Ty,
const Twine &Name,
BasicBlock *InsertAtEnd) {
assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() &&
"Invalid cast");
unsigned SrcBits = C->getType()->getScalarSizeInBits();
unsigned DstBits = Ty->getScalarSizeInBits();
Instruction::CastOps opcode =
(SrcBits == DstBits ? Instruction::BitCast :
(SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
return Create(opcode, C, Ty, Name, InsertAtEnd);
}
// Check whether it is valid to call getCastOpcode for these types.
// This routine must be kept in sync with getCastOpcode.
bool CastInst::isCastable(const Type *SrcTy, const Type *DestTy) {
if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType())
return false;
if (SrcTy == DestTy)
return true;
if (const VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy))
if (const VectorType *DestVecTy = dyn_cast<VectorType>(DestTy))
if (SrcVecTy->getNumElements() == DestVecTy->getNumElements()) {
// An element by element cast. Valid if casting the elements is valid.
SrcTy = SrcVecTy->getElementType();
DestTy = DestVecTy->getElementType();
}
// Get the bit sizes, we'll need these
unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr
unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr
// Run through the possibilities ...
if (DestTy->isIntegerTy()) { // Casting to integral
if (SrcTy->isIntegerTy()) { // Casting from integral
return true;
} else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt
return true;
} else if (SrcTy->isVectorTy()) { // Casting from vector
return DestBits == SrcBits;
} else { // Casting from something else
return SrcTy->isPointerTy();
}
} else if (DestTy->isFloatingPointTy()) { // Casting to floating pt
if (SrcTy->isIntegerTy()) { // Casting from integral
return true;
} else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt
return true;
} else if (SrcTy->isVectorTy()) { // Casting from vector
return DestBits == SrcBits;
} else { // Casting from something else
return false;
}
} else if (DestTy->isVectorTy()) { // Casting to vector
return DestBits == SrcBits;
} else if (DestTy->isPointerTy()) { // Casting to pointer
if (SrcTy->isPointerTy()) { // Casting from pointer
return true;
} else if (SrcTy->isIntegerTy()) { // Casting from integral
return true;
} else { // Casting from something else
return false;
}
} else if (DestTy->isX86_MMXTy()) {
if (SrcTy->isVectorTy()) {
return DestBits == SrcBits; // 64-bit vector to MMX
} else {
return false;
}
} else { // Casting to something else
return false;
}
}
// Provide a way to get a "cast" where the cast opcode is inferred from the
// types and size of the operand. This, basically, is a parallel of the
// logic in the castIsValid function below. This axiom should hold:
// castIsValid( getCastOpcode(Val, Ty), Val, Ty)
// should not assert in castIsValid. In other words, this produces a "correct"
// casting opcode for the arguments passed to it.
// This routine must be kept in sync with isCastable.
Instruction::CastOps
CastInst::getCastOpcode(
const Value *Src, bool SrcIsSigned, const Type *DestTy, bool DestIsSigned) {
const Type *SrcTy = Src->getType();
assert(SrcTy->isFirstClassType() && DestTy->isFirstClassType() &&
"Only first class types are castable!");
if (SrcTy == DestTy)
return BitCast;
if (const VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy))
if (const VectorType *DestVecTy = dyn_cast<VectorType>(DestTy))
if (SrcVecTy->getNumElements() == DestVecTy->getNumElements()) {
// An element by element cast. Find the appropriate opcode based on the
// element types.
SrcTy = SrcVecTy->getElementType();
DestTy = DestVecTy->getElementType();
}
// Get the bit sizes, we'll need these
unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr
unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr
// Run through the possibilities ...
if (DestTy->isIntegerTy()) { // Casting to integral
if (SrcTy->isIntegerTy()) { // Casting from integral
if (DestBits < SrcBits)
return Trunc; // int -> smaller int
else if (DestBits > SrcBits) { // its an extension
if (SrcIsSigned)
return SExt; // signed -> SEXT
else
return ZExt; // unsigned -> ZEXT
} else {
return BitCast; // Same size, No-op cast
}
} else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt
if (DestIsSigned)
return FPToSI; // FP -> sint
else
return FPToUI; // FP -> uint
} else if (SrcTy->isVectorTy()) {
assert(DestBits == SrcBits &&
"Casting vector to integer of different width");
return BitCast; // Same size, no-op cast
} else {
assert(SrcTy->isPointerTy() &&
"Casting from a value that is not first-class type");
return PtrToInt; // ptr -> int
}
} else if (DestTy->isFloatingPointTy()) { // Casting to floating pt
if (SrcTy->isIntegerTy()) { // Casting from integral
if (SrcIsSigned)
return SIToFP; // sint -> FP
else
return UIToFP; // uint -> FP
} else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt
if (DestBits < SrcBits) {
return FPTrunc; // FP -> smaller FP
} else if (DestBits > SrcBits) {
return FPExt; // FP -> larger FP
} else {
return BitCast; // same size, no-op cast
}
} else if (SrcTy->isVectorTy()) {
assert(DestBits == SrcBits &&
"Casting vector to floating point of different width");
return BitCast; // same size, no-op cast
} else {
llvm_unreachable("Casting pointer or non-first class to float");
}
} else if (DestTy->isVectorTy()) {
assert(DestBits == SrcBits &&
"Illegal cast to vector (wrong type or size)");
return BitCast;
} else if (DestTy->isPointerTy()) {
if (SrcTy->isPointerTy()) {
return BitCast; // ptr -> ptr
} else if (SrcTy->isIntegerTy()) {
return IntToPtr; // int -> ptr
} else {
assert(!"Casting pointer to other than pointer or int");
}
} else if (DestTy->isX86_MMXTy()) {
if (SrcTy->isVectorTy()) {
assert(DestBits == SrcBits && "Casting vector of wrong width to X86_MMX");
return BitCast; // 64-bit vector to MMX
} else {
assert(!"Illegal cast to X86_MMX");
}
} else {
assert(!"Casting to type that is not first-class");
}
// If we fall through to here we probably hit an assertion cast above
// and assertions are not turned on. Anything we return is an error, so
// BitCast is as good a choice as any.
return BitCast;
}
//===----------------------------------------------------------------------===//
// CastInst SubClass Constructors
//===----------------------------------------------------------------------===//
/// Check that the construction parameters for a CastInst are correct. This
/// could be broken out into the separate constructors but it is useful to have
/// it in one place and to eliminate the redundant code for getting the sizes
/// of the types involved.
bool
CastInst::castIsValid(Instruction::CastOps op, Value *S, const Type *DstTy) {
// Check for type sanity on the arguments
const Type *SrcTy = S->getType();
if (!SrcTy->isFirstClassType() || !DstTy->isFirstClassType() ||
SrcTy->isAggregateType() || DstTy->isAggregateType())
return false;
// Get the size of the types in bits, we'll need this later
unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
unsigned DstBitSize = DstTy->getScalarSizeInBits();
// If these are vector types, get the lengths of the vectors (using zero for
// scalar types means that checking that vector lengths match also checks that
// scalars are not being converted to vectors or vectors to scalars).
unsigned SrcLength = SrcTy->isVectorTy() ?
cast<VectorType>(SrcTy)->getNumElements() : 0;
unsigned DstLength = DstTy->isVectorTy() ?
cast<VectorType>(DstTy)->getNumElements() : 0;
// Switch on the opcode provided
switch (op) {
default: return false; // This is an input error
case Instruction::Trunc:
return SrcTy->isIntOrIntVectorTy() && DstTy->isIntOrIntVectorTy() &&
SrcLength == DstLength && SrcBitSize > DstBitSize;
case Instruction::ZExt:
return SrcTy->isIntOrIntVectorTy() && DstTy->isIntOrIntVectorTy() &&
SrcLength == DstLength && SrcBitSize < DstBitSize;
case Instruction::SExt:
return SrcTy->isIntOrIntVectorTy() && DstTy->isIntOrIntVectorTy() &&
SrcLength == DstLength && SrcBitSize < DstBitSize;
case Instruction::FPTrunc:
return SrcTy->isFPOrFPVectorTy() && DstTy->isFPOrFPVectorTy() &&
SrcLength == DstLength && SrcBitSize > DstBitSize;
case Instruction::FPExt:
return SrcTy->isFPOrFPVectorTy() && DstTy->isFPOrFPVectorTy() &&
SrcLength == DstLength && SrcBitSize < DstBitSize;
case Instruction::UIToFP:
case Instruction::SIToFP:
return SrcTy->isIntOrIntVectorTy() && DstTy->isFPOrFPVectorTy() &&
SrcLength == DstLength;
case Instruction::FPToUI:
case Instruction::FPToSI:
return SrcTy->isFPOrFPVectorTy() && DstTy->isIntOrIntVectorTy() &&
SrcLength == DstLength;
case Instruction::PtrToInt:
return SrcTy->isPointerTy() && DstTy->isIntegerTy();
case Instruction::IntToPtr:
return SrcTy->isIntegerTy() && DstTy->isPointerTy();
case Instruction::BitCast:
// BitCast implies a no-op cast of type only. No bits change.
// However, you can't cast pointers to anything but pointers.
if (SrcTy->isPointerTy() != DstTy->isPointerTy())
return false;
// Now we know we're not dealing with a pointer/non-pointer mismatch. In all
// these cases, the cast is okay if the source and destination bit widths
// are identical.
return SrcTy->getPrimitiveSizeInBits() == DstTy->getPrimitiveSizeInBits();
}
}
TruncInst::TruncInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, Trunc, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc");
}
TruncInst::TruncInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, Trunc, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc");
}
ZExtInst::ZExtInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, ZExt, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt");
}
ZExtInst::ZExtInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, ZExt, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt");
}
SExtInst::SExtInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, SExt, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt");
}
SExtInst::SExtInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, SExt, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt");
}
FPTruncInst::FPTruncInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, FPTrunc, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc");
}
FPTruncInst::FPTruncInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, FPTrunc, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc");
}
FPExtInst::FPExtInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, FPExt, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt");
}
FPExtInst::FPExtInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, FPExt, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt");
}
UIToFPInst::UIToFPInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, UIToFP, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP");
}
UIToFPInst::UIToFPInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, UIToFP, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP");
}
SIToFPInst::SIToFPInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, SIToFP, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP");
}
SIToFPInst::SIToFPInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, SIToFP, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP");
}
FPToUIInst::FPToUIInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, FPToUI, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI");
}
FPToUIInst::FPToUIInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, FPToUI, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI");
}
FPToSIInst::FPToSIInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, FPToSI, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI");
}
FPToSIInst::FPToSIInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, FPToSI, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI");
}
PtrToIntInst::PtrToIntInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, PtrToInt, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt");
}
PtrToIntInst::PtrToIntInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, PtrToInt, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt");
}
IntToPtrInst::IntToPtrInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, IntToPtr, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr");
}
IntToPtrInst::IntToPtrInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, IntToPtr, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr");
}
BitCastInst::BitCastInst(
Value *S, const Type *Ty, const Twine &Name, Instruction *InsertBefore
) : CastInst(Ty, BitCast, S, Name, InsertBefore) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast");
}
BitCastInst::BitCastInst(
Value *S, const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
) : CastInst(Ty, BitCast, S, Name, InsertAtEnd) {
assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast");
}
//===----------------------------------------------------------------------===//
// CmpInst Classes
//===----------------------------------------------------------------------===//
void CmpInst::Anchor() const {}
CmpInst::CmpInst(const Type *ty, OtherOps op, unsigned short predicate,
Value *LHS, Value *RHS, const Twine &Name,
Instruction *InsertBefore)
: Instruction(ty, op,
OperandTraits<CmpInst>::op_begin(this),
OperandTraits<CmpInst>::operands(this),
InsertBefore) {
Op<0>() = LHS;
Op<1>() = RHS;
setPredicate((Predicate)predicate);
setName(Name);
}
CmpInst::CmpInst(const Type *ty, OtherOps op, unsigned short predicate,
Value *LHS, Value *RHS, const Twine &Name,
BasicBlock *InsertAtEnd)
: Instruction(ty, op,
OperandTraits<CmpInst>::op_begin(this),
OperandTraits<CmpInst>::operands(this),
InsertAtEnd) {
Op<0>() = LHS;
Op<1>() = RHS;
setPredicate((Predicate)predicate);
setName(Name);
}
CmpInst *
CmpInst::Create(OtherOps Op, unsigned short predicate,
Value *S1, Value *S2,
const Twine &Name, Instruction *InsertBefore) {
if (Op == Instruction::ICmp) {
if (InsertBefore)
return new ICmpInst(InsertBefore, CmpInst::Predicate(predicate),
S1, S2, Name);
else
return new ICmpInst(CmpInst::Predicate(predicate),
S1, S2, Name);
}
if (InsertBefore)
return new FCmpInst(InsertBefore, CmpInst::Predicate(predicate),
S1, S2, Name);
else
return new FCmpInst(CmpInst::Predicate(predicate),
S1, S2, Name);
}
CmpInst *
CmpInst::Create(OtherOps Op, unsigned short predicate, Value *S1, Value *S2,
const Twine &Name, BasicBlock *InsertAtEnd) {
if (Op == Instruction::ICmp) {
return new ICmpInst(*InsertAtEnd, CmpInst::Predicate(predicate),
S1, S2, Name);
}
return new FCmpInst(*InsertAtEnd, CmpInst::Predicate(predicate),
S1, S2, Name);
}
void CmpInst::swapOperands() {
if (ICmpInst *IC = dyn_cast<ICmpInst>(this))
IC->swapOperands();
else
cast<FCmpInst>(this)->swapOperands();
}
bool CmpInst::isCommutative() const {
if (const ICmpInst *IC = dyn_cast<ICmpInst>(this))
return IC->isCommutative();
return cast<FCmpInst>(this)->isCommutative();
}
bool CmpInst::isEquality() const {
if (const ICmpInst *IC = dyn_cast<ICmpInst>(this))
return IC->isEquality();
return cast<FCmpInst>(this)->isEquality();
}
CmpInst::Predicate CmpInst::getInversePredicate(Predicate pred) {
switch (pred) {
default: assert(!"Unknown cmp predicate!");
case ICMP_EQ: return ICMP_NE;
case ICMP_NE: return ICMP_EQ;
case ICMP_UGT: return ICMP_ULE;
case ICMP_ULT: return ICMP_UGE;
case ICMP_UGE: return ICMP_ULT;
case ICMP_ULE: return ICMP_UGT;
case ICMP_SGT: return ICMP_SLE;
case ICMP_SLT: return ICMP_SGE;
case ICMP_SGE: return ICMP_SLT;
case ICMP_SLE: return ICMP_SGT;
case FCMP_OEQ: return FCMP_UNE;
case FCMP_ONE: return FCMP_UEQ;
case FCMP_OGT: return FCMP_ULE;
case FCMP_OLT: return FCMP_UGE;
case FCMP_OGE: return FCMP_ULT;
case FCMP_OLE: return FCMP_UGT;
case FCMP_UEQ: return FCMP_ONE;
case FCMP_UNE: return FCMP_OEQ;
case FCMP_UGT: return FCMP_OLE;
case FCMP_ULT: return FCMP_OGE;
case FCMP_UGE: return FCMP_OLT;
case FCMP_ULE: return FCMP_OGT;
case FCMP_ORD: return FCMP_UNO;
case FCMP_UNO: return FCMP_ORD;
case FCMP_TRUE: return FCMP_FALSE;
case FCMP_FALSE: return FCMP_TRUE;
}
}
ICmpInst::Predicate ICmpInst::getSignedPredicate(Predicate pred) {
switch (pred) {
default: assert(! "Unknown icmp predicate!");
case ICMP_EQ: case ICMP_NE:
case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE:
return pred;
case ICMP_UGT: return ICMP_SGT;
case ICMP_ULT: return ICMP_SLT;
case ICMP_UGE: return ICMP_SGE;
case ICMP_ULE: return ICMP_SLE;
}
}
ICmpInst::Predicate ICmpInst::getUnsignedPredicate(Predicate pred) {
switch (pred) {
default: assert(! "Unknown icmp predicate!");
case ICMP_EQ: case ICMP_NE:
case ICMP_UGT: case ICMP_ULT: case ICMP_UGE: case ICMP_ULE:
return pred;
case ICMP_SGT: return ICMP_UGT;
case ICMP_SLT: return ICMP_ULT;
case ICMP_SGE: return ICMP_UGE;
case ICMP_SLE: return ICMP_ULE;
}
}
/// Initialize a set of values that all satisfy the condition with C.
///
ConstantRange
ICmpInst::makeConstantRange(Predicate pred, const APInt &C) {
APInt Lower(C);
APInt Upper(C);
uint32_t BitWidth = C.getBitWidth();
switch (pred) {
default: llvm_unreachable("Invalid ICmp opcode to ConstantRange ctor!");
case ICmpInst::ICMP_EQ: Upper++; break;
case ICmpInst::ICMP_NE: Lower++; break;
case ICmpInst::ICMP_ULT:
Lower = APInt::getMinValue(BitWidth);
// Check for an empty-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/false);
break;
case ICmpInst::ICMP_SLT:
Lower = APInt::getSignedMinValue(BitWidth);
// Check for an empty-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/false);
break;
case ICmpInst::ICMP_UGT:
Lower++; Upper = APInt::getMinValue(BitWidth); // Min = Next(Max)
// Check for an empty-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/false);
break;
case ICmpInst::ICMP_SGT:
Lower++; Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max)
// Check for an empty-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/false);
break;
case ICmpInst::ICMP_ULE:
Lower = APInt::getMinValue(BitWidth); Upper++;
// Check for a full-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/true);
break;
case ICmpInst::ICMP_SLE:
Lower = APInt::getSignedMinValue(BitWidth); Upper++;
// Check for a full-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/true);
break;
case ICmpInst::ICMP_UGE:
Upper = APInt::getMinValue(BitWidth); // Min = Next(Max)
// Check for a full-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/true);
break;
case ICmpInst::ICMP_SGE:
Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max)
// Check for a full-set condition.
if (Lower == Upper)
return ConstantRange(BitWidth, /*isFullSet=*/true);
break;
}
return ConstantRange(Lower, Upper);
}
CmpInst::Predicate CmpInst::getSwappedPredicate(Predicate pred) {
switch (pred) {
default: assert(!"Unknown cmp predicate!");
case ICMP_EQ: case ICMP_NE:
return pred;
case ICMP_SGT: return ICMP_SLT;
case ICMP_SLT: return ICMP_SGT;
case ICMP_SGE: return ICMP_SLE;
case ICMP_SLE: return ICMP_SGE;
case ICMP_UGT: return ICMP_ULT;
case ICMP_ULT: return ICMP_UGT;
case ICMP_UGE: return ICMP_ULE;
case ICMP_ULE: return ICMP_UGE;
case FCMP_FALSE: case FCMP_TRUE:
case FCMP_OEQ: case FCMP_ONE:
case FCMP_UEQ: case FCMP_UNE:
case FCMP_ORD: case FCMP_UNO:
return pred;
case FCMP_OGT: return FCMP_OLT;
case FCMP_OLT: return FCMP_OGT;
case FCMP_OGE: return FCMP_OLE;
case FCMP_OLE: return FCMP_OGE;
case FCMP_UGT: return FCMP_ULT;
case FCMP_ULT: return FCMP_UGT;
case FCMP_UGE: return FCMP_ULE;
case FCMP_ULE: return FCMP_UGE;
}
}
bool CmpInst::isUnsigned(unsigned short predicate) {
switch (predicate) {
default: return false;
case ICmpInst::ICMP_ULT: case ICmpInst::ICMP_ULE: case ICmpInst::ICMP_UGT:
case ICmpInst::ICMP_UGE: return true;
}
}
bool CmpInst::isSigned(unsigned short predicate) {
switch (predicate) {
default: return false;
case ICmpInst::ICMP_SLT: case ICmpInst::ICMP_SLE: case ICmpInst::ICMP_SGT:
case ICmpInst::ICMP_SGE: return true;
}
}
bool CmpInst::isOrdered(unsigned short predicate) {
switch (predicate) {
default: return false;
case FCmpInst::FCMP_OEQ: case FCmpInst::FCMP_ONE: case FCmpInst::FCMP_OGT:
case FCmpInst::FCMP_OLT: case FCmpInst::FCMP_OGE: case FCmpInst::FCMP_OLE:
case FCmpInst::FCMP_ORD: return true;
}
}
bool CmpInst::isUnordered(unsigned short predicate) {
switch (predicate) {
default: return false;
case FCmpInst::FCMP_UEQ: case FCmpInst::FCMP_UNE: case FCmpInst::FCMP_UGT:
case FCmpInst::FCMP_ULT: case FCmpInst::FCMP_UGE: case FCmpInst::FCMP_ULE:
case FCmpInst::FCMP_UNO: return true;
}
}
bool CmpInst::isTrueWhenEqual(unsigned short predicate) {
switch(predicate) {
default: return false;
case ICMP_EQ: case ICMP_UGE: case ICMP_ULE: case ICMP_SGE: case ICMP_SLE:
case FCMP_TRUE: case FCMP_UEQ: case FCMP_UGE: case FCMP_ULE: return true;
}
}
bool CmpInst::isFalseWhenEqual(unsigned short predicate) {
switch(predicate) {
case ICMP_NE: case ICMP_UGT: case ICMP_ULT: case ICMP_SGT: case ICMP_SLT:
case FCMP_FALSE: case FCMP_ONE: case FCMP_OGT: case FCMP_OLT: return true;
default: return false;
}
}
//===----------------------------------------------------------------------===//
// SwitchInst Implementation
//===----------------------------------------------------------------------===//
void SwitchInst::init(Value *Value, BasicBlock *Default, unsigned NumReserved) {
assert(Value && Default && NumReserved);
ReservedSpace = NumReserved;
NumOperands = 2;
OperandList = allocHungoffUses(ReservedSpace);
OperandList[0] = Value;
OperandList[1] = Default;
}
/// SwitchInst ctor - Create a new switch instruction, specifying a value to
/// switch on and a default destination. The number of additional cases can
/// be specified here to make memory allocation more efficient. This
/// constructor can also autoinsert before another instruction.
SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(Value->getContext()), Instruction::Switch,
0, 0, InsertBefore) {
init(Value, Default, 2+NumCases*2);
}
/// SwitchInst ctor - Create a new switch instruction, specifying a value to
/// switch on and a default destination. The number of additional cases can
/// be specified here to make memory allocation more efficient. This
/// constructor also autoinserts at the end of the specified BasicBlock.
SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(Value->getContext()), Instruction::Switch,
0, 0, InsertAtEnd) {
init(Value, Default, 2+NumCases*2);
}
SwitchInst::SwitchInst(const SwitchInst &SI)
: TerminatorInst(SI.getType(), Instruction::Switch, 0, 0) {
init(SI.getCondition(), SI.getDefaultDest(), SI.getNumOperands());
NumOperands = SI.getNumOperands();
Use *OL = OperandList, *InOL = SI.OperandList;
for (unsigned i = 2, E = SI.getNumOperands(); i != E; i += 2) {
OL[i] = InOL[i];
OL[i+1] = InOL[i+1];
}
SubclassOptionalData = SI.SubclassOptionalData;
}
SwitchInst::~SwitchInst() {
dropHungoffUses();
}
/// addCase - Add an entry to the switch instruction...
///
void SwitchInst::addCase(ConstantInt *OnVal, BasicBlock *Dest) {
unsigned OpNo = NumOperands;
if (OpNo+2 > ReservedSpace)
growOperands(); // Get more space!
// Initialize some new operands.
assert(OpNo+1 < ReservedSpace && "Growing didn't work!");
NumOperands = OpNo+2;
OperandList[OpNo] = OnVal;
OperandList[OpNo+1] = Dest;
}
/// removeCase - This method removes the specified successor from the switch
/// instruction. Note that this cannot be used to remove the default
/// destination (successor #0).
///
void SwitchInst::removeCase(unsigned idx) {
assert(idx != 0 && "Cannot remove the default case!");
assert(idx*2 < getNumOperands() && "Successor index out of range!!!");
unsigned NumOps = getNumOperands();
Use *OL = OperandList;
// Overwrite this case with the end of the list.
if ((idx + 1) * 2 != NumOps) {
OL[idx * 2] = OL[NumOps - 2];
OL[idx * 2 + 1] = OL[NumOps - 1];
}
// Nuke the last value.
OL[NumOps-2].set(0);
OL[NumOps-2+1].set(0);
NumOperands = NumOps-2;
}
/// growOperands - grow operands - This grows the operand list in response
/// to a push_back style of operation. This grows the number of ops by 3 times.
///
void SwitchInst::growOperands() {
unsigned e = getNumOperands();
unsigned NumOps = e*3;
ReservedSpace = NumOps;
Use *NewOps = allocHungoffUses(NumOps);
Use *OldOps = OperandList;
for (unsigned i = 0; i != e; ++i) {
NewOps[i] = OldOps[i];
}
OperandList = NewOps;
Use::zap(OldOps, OldOps + e, true);
}
BasicBlock *SwitchInst::getSuccessorV(unsigned idx) const {
return getSuccessor(idx);
}
unsigned SwitchInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
void SwitchInst::setSuccessorV(unsigned idx, BasicBlock *B) {
setSuccessor(idx, B);
}
//===----------------------------------------------------------------------===//
// IndirectBrInst Implementation
//===----------------------------------------------------------------------===//
void IndirectBrInst::init(Value *Address, unsigned NumDests) {
assert(Address && Address->getType()->isPointerTy() &&
"Address of indirectbr must be a pointer");
ReservedSpace = 1+NumDests;
NumOperands = 1;
OperandList = allocHungoffUses(ReservedSpace);
OperandList[0] = Address;
}
/// growOperands - grow operands - This grows the operand list in response
/// to a push_back style of operation. This grows the number of ops by 2 times.
///
void IndirectBrInst::growOperands() {
unsigned e = getNumOperands();
unsigned NumOps = e*2;
ReservedSpace = NumOps;
Use *NewOps = allocHungoffUses(NumOps);
Use *OldOps = OperandList;
for (unsigned i = 0; i != e; ++i)
NewOps[i] = OldOps[i];
OperandList = NewOps;
Use::zap(OldOps, OldOps + e, true);
}
IndirectBrInst::IndirectBrInst(Value *Address, unsigned NumCases,
Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(Address->getContext()),Instruction::IndirectBr,
0, 0, InsertBefore) {
init(Address, NumCases);
}
IndirectBrInst::IndirectBrInst(Value *Address, unsigned NumCases,
BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(Address->getContext()),Instruction::IndirectBr,
0, 0, InsertAtEnd) {
init(Address, NumCases);
}
IndirectBrInst::IndirectBrInst(const IndirectBrInst &IBI)
: TerminatorInst(Type::getVoidTy(IBI.getContext()), Instruction::IndirectBr,
allocHungoffUses(IBI.getNumOperands()),
IBI.getNumOperands()) {
Use *OL = OperandList, *InOL = IBI.OperandList;
for (unsigned i = 0, E = IBI.getNumOperands(); i != E; ++i)
OL[i] = InOL[i];
SubclassOptionalData = IBI.SubclassOptionalData;
}
IndirectBrInst::~IndirectBrInst() {
dropHungoffUses();
}
/// addDestination - Add a destination.
///
void IndirectBrInst::addDestination(BasicBlock *DestBB) {
unsigned OpNo = NumOperands;
if (OpNo+1 > ReservedSpace)
growOperands(); // Get more space!
// Initialize some new operands.
assert(OpNo < ReservedSpace && "Growing didn't work!");
NumOperands = OpNo+1;
OperandList[OpNo] = DestBB;
}
/// removeDestination - This method removes the specified successor from the
/// indirectbr instruction.
void IndirectBrInst::removeDestination(unsigned idx) {
assert(idx < getNumOperands()-1 && "Successor index out of range!");
unsigned NumOps = getNumOperands();
Use *OL = OperandList;
// Replace this value with the last one.
OL[idx+1] = OL[NumOps-1];
// Nuke the last value.
OL[NumOps-1].set(0);
NumOperands = NumOps-1;
}
BasicBlock *IndirectBrInst::getSuccessorV(unsigned idx) const {
return getSuccessor(idx);
}
unsigned IndirectBrInst::getNumSuccessorsV() const {
return getNumSuccessors();
}
void IndirectBrInst::setSuccessorV(unsigned idx, BasicBlock *B) {
setSuccessor(idx, B);
}
//===----------------------------------------------------------------------===//
// clone_impl() implementations
//===----------------------------------------------------------------------===//
// Define these methods here so vtables don't get emitted into every translation
// unit that uses these classes.
GetElementPtrInst *GetElementPtrInst::clone_impl() const {
return new (getNumOperands()) GetElementPtrInst(*this);
}
BinaryOperator *BinaryOperator::clone_impl() const {
return Create(getOpcode(), Op<0>(), Op<1>());
}
FCmpInst* FCmpInst::clone_impl() const {
return new FCmpInst(getPredicate(), Op<0>(), Op<1>());
}
ICmpInst* ICmpInst::clone_impl() const {
return new ICmpInst(getPredicate(), Op<0>(), Op<1>());
}
ExtractValueInst *ExtractValueInst::clone_impl() const {
return new ExtractValueInst(*this);
}
InsertValueInst *InsertValueInst::clone_impl() const {
return new InsertValueInst(*this);
}
AllocaInst *AllocaInst::clone_impl() const {
return new AllocaInst(getAllocatedType(),
(Value*)getOperand(0),
getAlignment());
}
LoadInst *LoadInst::clone_impl() const {
return new LoadInst(getOperand(0),
Twine(), isVolatile(),
getAlignment());
}
StoreInst *StoreInst::clone_impl() const {
return new StoreInst(getOperand(0), getOperand(1),
isVolatile(), getAlignment());
}
TruncInst *TruncInst::clone_impl() const {
return new TruncInst(getOperand(0), getType());
}
ZExtInst *ZExtInst::clone_impl() const {
return new ZExtInst(getOperand(0), getType());
}
SExtInst *SExtInst::clone_impl() const {
return new SExtInst(getOperand(0), getType());
}
FPTruncInst *FPTruncInst::clone_impl() const {
return new FPTruncInst(getOperand(0), getType());
}
FPExtInst *FPExtInst::clone_impl() const {
return new FPExtInst(getOperand(0), getType());
}
UIToFPInst *UIToFPInst::clone_impl() const {
return new UIToFPInst(getOperand(0), getType());
}
SIToFPInst *SIToFPInst::clone_impl() const {
return new SIToFPInst(getOperand(0), getType());
}
FPToUIInst *FPToUIInst::clone_impl() const {
return new FPToUIInst(getOperand(0), getType());
}
FPToSIInst *FPToSIInst::clone_impl() const {
return new FPToSIInst(getOperand(0), getType());
}
PtrToIntInst *PtrToIntInst::clone_impl() const {
return new PtrToIntInst(getOperand(0), getType());
}
IntToPtrInst *IntToPtrInst::clone_impl() const {
return new IntToPtrInst(getOperand(0), getType());
}
BitCastInst *BitCastInst::clone_impl() const {
return new BitCastInst(getOperand(0), getType());
}
CallInst *CallInst::clone_impl() const {
return new(getNumOperands()) CallInst(*this);
}
SelectInst *SelectInst::clone_impl() const {
return SelectInst::Create(getOperand(0), getOperand(1), getOperand(2));
}
VAArgInst *VAArgInst::clone_impl() const {
return new VAArgInst(getOperand(0), getType());
}
ExtractElementInst *ExtractElementInst::clone_impl() const {
return ExtractElementInst::Create(getOperand(0), getOperand(1));
}
InsertElementInst *InsertElementInst::clone_impl() const {
return InsertElementInst::Create(getOperand(0),
getOperand(1),
getOperand(2));
}
ShuffleVectorInst *ShuffleVectorInst::clone_impl() const {
return new ShuffleVectorInst(getOperand(0),
getOperand(1),
getOperand(2));
}
PHINode *PHINode::clone_impl() const {
return new PHINode(*this);
}
ReturnInst *ReturnInst::clone_impl() const {
return new(getNumOperands()) ReturnInst(*this);
}
BranchInst *BranchInst::clone_impl() const {
return new(getNumOperands()) BranchInst(*this);
}
SwitchInst *SwitchInst::clone_impl() const {
return new SwitchInst(*this);
}
IndirectBrInst *IndirectBrInst::clone_impl() const {
return new IndirectBrInst(*this);
}
InvokeInst *InvokeInst::clone_impl() const {
return new(getNumOperands()) InvokeInst(*this);
}
UnwindInst *UnwindInst::clone_impl() const {
LLVMContext &Context = getContext();
return new UnwindInst(Context);
}
UnreachableInst *UnreachableInst::clone_impl() const {
LLVMContext &Context = getContext();
return new UnreachableInst(Context);
}
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