// 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.
+ if (getIncomingValue(i) != ConstantValue && getIncomingValue(i) != this) {
+ if (ConstantValue != this)
+ return 0; // Incoming values not all the same.
+ // The case where the first value is this PHI.
+ ConstantValue = getIncomingValue(i);
+ }
return ConstantValue;
}
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!");
-}
-
//===----------------------------------------------------------------------===//
// ResumeInst Implementation
//===----------------------------------------------------------------------===//
}
void UnreachableInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
- llvm_unreachable("UnwindInst has no successors!");
+ llvm_unreachable("UnreachableInst has no successors!");
}
BasicBlock *UnreachableInst::getSuccessorV(unsigned idx) const {
- llvm_unreachable("UnwindInst has no successors!");
+ llvm_unreachable("UnreachableInst has no successors!");
}
//===----------------------------------------------------------------------===//
if (PointerType *PTy = dyn_cast<PointerType>(Ty))
return PTy->getAddressSpace();
- assert(false && "Invalid GEP pointer type");
- return 0;
+ llvm_unreachable("Invalid GEP pointer type");
}
/// hasAllZeroIndices - Return true if all of the indices of this GEP are
bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2,
const Value *Mask) {
+ // V1 and V2 must be vectors of the same type.
if (!V1->getType()->isVectorTy() || V1->getType() != V2->getType())
return false;
+ // Mask must be vector of i32.
VectorType *MaskTy = dyn_cast<VectorType>(Mask->getType());
if (MaskTy == 0 || !MaskTy->getElementType()->isIntegerTy(32))
return false;
// Check to see if Mask is valid.
+ if (isa<UndefValue>(Mask) || isa<ConstantAggregateZero>(Mask))
+ return true;
+
if (const ConstantVector *MV = dyn_cast<ConstantVector>(Mask)) {
- VectorType *VTy = cast<VectorType>(V1->getType());
+ unsigned V1Size = cast<VectorType>(V1->getType())->getNumElements();
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))
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(MV->getOperand(i))) {
+ if (CI->uge(V1Size*2))
return false;
} else if (!isa<UndefValue>(MV->getOperand(i))) {
return false;
}
}
- } else if (!isa<UndefValue>(Mask) && !isa<ConstantAggregateZero>(Mask)) {
- // The bitcode reader can create a place holder for a forward reference
- // used as the shuffle mask. When this occurs, the shuffle mask will
- // fall into this case and fail. To avoid this error, do this bit of
- // ugliness to allow such a mask pass.
- if (const ConstantExpr* CE = dyn_cast<ConstantExpr>(Mask)) {
- if (CE->getOpcode() == Instruction::UserOp1)
- return true;
- }
- return false;
+ return true;
}
- return true;
+
+ if (const ConstantDataSequential *CDS =
+ dyn_cast<ConstantDataSequential>(Mask)) {
+ unsigned V1Size = cast<VectorType>(V1->getType())->getNumElements();
+ for (unsigned i = 0, e = MaskTy->getNumElements(); i != e; ++i)
+ if (CDS->getElementAsInteger(i) >= V1Size*2)
+ return false;
+ return true;
+ }
+
+ // The bitcode reader can create a place holder for a forward reference
+ // used as the shuffle mask. When this occurs, the shuffle mask will
+ // fall into this case and fail. To avoid this error, do this bit of
+ // ugliness to allow such a mask pass.
+ if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(Mask))
+ if (CE->getOpcode() == Instruction::UserOp1)
+ return true;
+
+ return false;
}
/// 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)))
+int ShuffleVectorInst::getMaskValue(Constant *Mask, unsigned i) {
+ assert(i < Mask->getType()->getVectorNumElements() && "Index out of range");
+ if (ConstantDataSequential *CDS =dyn_cast<ConstantDataSequential>(Mask))
+ return CDS->getElementAsInteger(i);
+ Constant *C = Mask->getAggregateElement(i);
+ if (isa<UndefValue>(C))
return -1;
- return cast<ConstantInt>(MaskCV->getOperand(i))->getZExtValue();
+ return cast<ConstantInt>(C)->getZExtValue();
+}
+
+/// getShuffleMask - Return the full mask for this instruction, where each
+/// element is the element number and undef's are returned as -1.
+void ShuffleVectorInst::getShuffleMask(Constant *Mask,
+ SmallVectorImpl<int> &Result) {
+ unsigned NumElts = Mask->getType()->getVectorNumElements();
+
+ if (ConstantDataSequential *CDS=dyn_cast<ConstantDataSequential>(Mask)) {
+ for (unsigned i = 0; i != NumElts; ++i)
+ Result.push_back(CDS->getElementAsInteger(i));
+ return;
+ }
+ for (unsigned i = 0; i != NumElts; ++i) {
+ Constant *C = Mask->getAggregateElement(i);
+ Result.push_back(isa<UndefValue>(C) ? -1 :
+ cast<ConstantInt>(C)->getZExtValue());
+ }
}
+
//===----------------------------------------------------------------------===//
// InsertValueInst Class
//===----------------------------------------------------------------------===//
BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
- return new BinaryOperator(Instruction::FSub,
- zero, Op,
+ 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,
+ return new BinaryOperator(Instruction::FSub, zero, Op,
Op->getType(), Name, InsertAtEnd);
}
BinaryOperator *BinaryOperator::CreateNot(Value *Op, const Twine &Name,
Instruction *InsertBefore) {
- Constant *C;
- if (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());
- }
-
+ Constant *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 (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());
- }
-
+ Constant *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();
+ if (const Constant *C = dyn_cast<Constant>(V))
+ return C->isAllOnesValue();
return false;
}
return cast<PossiblyExactOperator>(this)->isExact();
}
+//===----------------------------------------------------------------------===//
+// FPMathOperator Class
+//===----------------------------------------------------------------------===//
+
+/// getFPAccuracy - Get the maximum error permitted by this operation in ULPs.
+/// An accuracy of 0.0 means that the operation should be performed with the
+/// default precision.
+float FPMathOperator::getFPAccuracy() const {
+ const MDNode *MD =
+ cast<Instruction>(this)->getMetadata(LLVMContext::MD_fpmath);
+ if (!MD)
+ return 0.0;
+ ConstantFP *Accuracy = cast<ConstantFP>(MD->getOperand(0));
+ return Accuracy->getValueAPF().convertToFloat();
+}
+
+
//===----------------------------------------------------------------------===//
// CastInst Class
//===----------------------------------------------------------------------===//
Type *DestTy,
Type *IntPtrTy) {
switch (Opcode) {
- default:
- assert(0 && "Invalid CastOp");
+ default: llvm_unreachable("Invalid CastOp");
case Instruction::Trunc:
case Instruction::ZExt:
case Instruction::SExt:
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(0 && "Invalid Cast Combination");
- return 0;
+ llvm_unreachable("Invalid Cast Combination");
default:
- assert(0 && "Error in CastResults table!!!");
- return 0;
+ llvm_unreachable("Error in CastResults table!!!");
}
}
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(0 && "Invalid opcode provided");
- return 0;
+ default: llvm_unreachable("Invalid opcode provided");
}
}
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(0 && "Invalid opcode provided");
- return 0;
+ default: llvm_unreachable("Invalid opcode provided");
}
}
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");
}
+ 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; // ptr -> ptr
} else if (SrcTy->isIntegerTy()) {
return IntToPtr; // int -> ptr
- } else {
- assert(0 && "Casting pointer to other than pointer or int");
}
+ llvm_unreachable("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(0 && "Illegal cast to X86_MMX");
}
- } else {
- assert(0 && "Casting to type that is not first-class");
+ llvm_unreachable("Illegal cast to X86_MMX");
}
-
- // 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;
+ llvm_unreachable("Casting to type that is not first-class");
}
//===----------------------------------------------------------------------===//
return SrcTy->isFPOrFPVectorTy() && DstTy->isIntOrIntVectorTy() &&
SrcLength == DstLength;
case Instruction::PtrToInt:
- if (SrcTy->getNumElements() != DstTy->getNumElements())
+ if (isa<VectorType>(SrcTy) != isa<VectorType>(DstTy))
return false;
+ if (VectorType *VT = dyn_cast<VectorType>(SrcTy))
+ if (VT->getNumElements() != cast<VectorType>(DstTy)->getNumElements())
+ return false;
return SrcTy->getScalarType()->isPointerTy() &&
DstTy->getScalarType()->isIntegerTy();
case Instruction::IntToPtr:
- if (SrcTy->getNumElements() != DstTy->getNumElements())
+ if (isa<VectorType>(SrcTy) != isa<VectorType>(DstTy))
return false;
+ if (VectorType *VT = dyn_cast<VectorType>(SrcTy))
+ if (VT->getNumElements() != cast<VectorType>(DstTy)->getNumElements())
+ return false;
return SrcTy->getScalarType()->isIntegerTy() &&
DstTy->getScalarType()->isPointerTy();
case Instruction::BitCast:
CmpInst::Predicate CmpInst::getInversePredicate(Predicate pred) {
switch (pred) {
- default: assert(0 && "Unknown cmp predicate!");
+ default: llvm_unreachable("Unknown cmp predicate!");
case ICMP_EQ: return ICMP_NE;
case ICMP_NE: return ICMP_EQ;
case ICMP_UGT: return ICMP_ULE;
ICmpInst::Predicate ICmpInst::getSignedPredicate(Predicate pred) {
switch (pred) {
- default: assert(0 && "Unknown icmp predicate!");
+ default: llvm_unreachable("Unknown icmp predicate!");
case ICMP_EQ: case ICMP_NE:
case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE:
return pred;
ICmpInst::Predicate ICmpInst::getUnsignedPredicate(Predicate pred) {
switch (pred) {
- default: assert(0 && "Unknown icmp predicate!");
+ default: llvm_unreachable("Unknown icmp predicate!");
case ICMP_EQ: case ICMP_NE:
case ICMP_UGT: case ICMP_ULT: case ICMP_UGE: case ICMP_ULE:
return pred;
CmpInst::Predicate CmpInst::getSwappedPredicate(Predicate pred) {
switch (pred) {
- default: assert(0 && "Unknown cmp predicate!");
+ default: llvm_unreachable("Unknown cmp predicate!");
case ICMP_EQ: case ICMP_NE:
return pred;
case ICMP_SGT: return ICMP_SLT;
OL[i] = InOL[i];
OL[i+1] = InOL[i+1];
}
+ TheSubsets = SI.TheSubsets;
SubclassOptionalData = SI.SubclassOptionalData;
}
/// addCase - Add an entry to the switch instruction...
///
void SwitchInst::addCase(ConstantInt *OnVal, BasicBlock *Dest) {
+ IntegersSubsetToBB Mapping;
+
+ // FIXME: Currently we work with ConstantInt based cases.
+ // So inititalize IntItem container directly from ConstantInt.
+ Mapping.add(IntItem::fromConstantInt(OnVal));
+ IntegersSubset CaseRanges = Mapping.getCase();
+ addCase(CaseRanges, Dest);
+}
+
+void SwitchInst::addCase(IntegersSubset& OnVal, BasicBlock *Dest) {
+ unsigned NewCaseIdx = getNumCases();
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;
+
+ SubsetsIt TheSubsetsIt = TheSubsets.insert(TheSubsets.end(), OnVal);
+
+ CaseIt Case(this, NewCaseIdx, TheSubsetsIt);
+ Case.updateCaseValueOperand(OnVal);
+ Case.setSuccessor(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!!!");
+/// removeCase - This method removes the specified case and its successor
+/// from the switch instruction.
+void SwitchInst::removeCase(CaseIt& i) {
+ unsigned idx = i.getCaseIndex();
+
+ assert(2 + idx*2 < getNumOperands() && "Case 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];
+ if (2 + (idx + 1) * 2 != NumOps) {
+ OL[2 + idx * 2] = OL[NumOps - 2];
+ OL[2 + idx * 2 + 1] = OL[NumOps - 1];
}
// Nuke the last value.
OL[NumOps-2].set(0);
OL[NumOps-2+1].set(0);
+
+ // Do the same with TheCases collection:
+ if (i.SubsetIt != --TheSubsets.end()) {
+ *i.SubsetIt = TheSubsets.back();
+ TheSubsets.pop_back();
+ } else {
+ TheSubsets.pop_back();
+ i.SubsetIt = TheSubsets.end();
+ }
+
NumOperands = NumOps-2;
}
}
InsertElementInst *InsertElementInst::clone_impl() const {
- return InsertElementInst::Create(getOperand(0),
- getOperand(1),
- getOperand(2));
+ return InsertElementInst::Create(getOperand(0), getOperand(1), getOperand(2));
}
ShuffleVectorInst *ShuffleVectorInst::clone_impl() const {
- return new ShuffleVectorInst(getOperand(0),
- getOperand(1),
- getOperand(2));
+ return new ShuffleVectorInst(getOperand(0), getOperand(1), getOperand(2));
}
PHINode *PHINode::clone_impl() const {
return new(1) ResumeInst(*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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