<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
- <a name="i_fp2uint">'<tt>fptoui .. to</tt>' Instruction</a>
+ <a name="i_fptoui">'<tt>fptoui .. to</tt>' Instruction</a>
</div>
<div class="doc_text">
<li><tt>uno</tt>: yields <tt>true</tt> if either operand is a QNAN.</li>
<li><tt>true</tt>: always yields <tt>true</tt>, regardless of operands.</li>
</ol>
-<p>If the operands are <a href="#t_packed">packed</a> typed, the elements of
-the vector are compared in turn and the predicate must hold for all elements.
-</p>
<h5>Example:</h5>
<pre> <result> = fcmp oeq float 4.0, 5.0 <i>; yields: result=false</i>
/// loop (inserting one if there is none). A canonical induction variable
/// starts at zero and steps by one on each iteration.
Value *getOrInsertCanonicalInductionVariable(const Loop *L, const Type *Ty){
- assert((Ty->isInteger() || Ty->isFloatingPoint()) &&
- "Can only insert integer or floating point induction variables!");
+ assert(Ty->isInteger() && "Can only insert integer induction variables!");
SCEVHandle H = SCEVAddRecExpr::get(SCEVUnknown::getIntegerSCEV(0, Ty),
SCEVUnknown::getIntegerSCEV(1, Ty), L);
return expand(H);
struct ConvertConstantType;
//===----------------------------------------------------------------------===//
-/// This is the shared class of boolean and integrer constants. This class
+/// This is the shared class of boolean and integer constants. This class
/// represents both boolean and integral constants.
/// @brief Class for constant integers.
class ConstantInt : public Constant {
static Constant *getInsertElement(Constant *Vec, Constant *Elt,Constant *Idx);
static Constant *getShuffleVector(Constant *V1, Constant *V2, Constant *Mask);
+ /// Floating point negation must be implemented with f(x) = -0.0 - x. This
+ /// method returns the negative zero constant for floating point or packed
+ /// floating point types; for all other types, it returns the null value.
+ static Constant *getZeroValueForNegationExpr(const Type *Ty);
+
/// isNullValue - Return true if this is the value that would be returned by
/// getNullValue.
virtual bool isNullValue() const { return false; }
// Matchers for unary operators
//
-template<typename LHS_t>
-struct neg_match {
- LHS_t L;
-
- neg_match(const LHS_t &LHS) : L(LHS) {}
-
- template<typename OpTy>
- bool match(OpTy *V) {
- if (Instruction *I = dyn_cast<Instruction>(V))
- if (I->getOpcode() == Instruction::Sub)
- return matchIfNeg(I->getOperand(0), I->getOperand(1));
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- if (CE->getOpcode() == Instruction::Sub)
- return matchIfNeg(CE->getOperand(0), CE->getOperand(1));
- if (ConstantInt *CI = dyn_cast<ConstantInt>(V))
- return L.match(ConstantExpr::getNeg(CI));
- return false;
- }
-private:
- bool matchIfNeg(Value *LHS, Value *RHS) {
- if (!LHS->getType()->isFloatingPoint())
- return LHS == Constant::getNullValue(LHS->getType()) && L.match(RHS);
- else
- return LHS == ConstantFP::get(LHS->getType(), -0.0) && L.match(RHS);
- }
-};
-
-template<typename LHS>
-inline neg_match<LHS> m_Neg(const LHS &L) { return L; }
-
-
template<typename LHS_t>
struct not_match {
LHS_t L;
// Insert a unit add instruction right before the terminator corresponding
// to the back-edge.
- Constant *One = Ty->isFloatingPoint() ? (Constant*)ConstantFP::get(Ty, 1.0)
- : ConstantInt::get(Ty, 1);
+ Constant *One = ConstantInt::get(Ty, 1);
Instruction *Add = BinaryOperator::createAdd(PN, One, "indvar.next",
(*HPI)->getTerminator());
void visitInvoke(InvokeInst &I) { assert(0 && "TODO"); }
void visitUnwind(UnwindInst &I) { assert(0 && "TODO"); }
- void visitIntBinary(User &I, unsigned IntOp, unsigned VecOp);
- void visitFPBinary(User &I, unsigned FPOp, unsigned VecOp);
+ void visitScalarBinary(User &I, unsigned OpCode);
+ void visitVectorBinary(User &I, unsigned OpCode);
+ void visitEitherBinary(User &I, unsigned ScalarOp, unsigned VectorOp);
void visitShift(User &I, unsigned Opcode);
void visitAdd(User &I) {
- if (I.getType()->isFloatingPoint())
- visitFPBinary(I, ISD::FADD, ISD::VADD);
+ if (isa<PackedType>(I.getType()))
+ visitVectorBinary(I, ISD::VADD);
+ else if (I.getType()->isFloatingPoint())
+ visitScalarBinary(I, ISD::FADD);
else
- visitIntBinary(I, ISD::ADD, ISD::VADD);
+ visitScalarBinary(I, ISD::ADD);
}
void visitSub(User &I);
void visitMul(User &I) {
- if (I.getType()->isFloatingPoint())
- visitFPBinary(I, ISD::FMUL, ISD::VMUL);
+ if (isa<PackedType>(I.getType()))
+ visitVectorBinary(I, ISD::VMUL);
+ else if (I.getType()->isFloatingPoint())
+ visitScalarBinary(I, ISD::FMUL);
else
- visitIntBinary(I, ISD::MUL, ISD::VMUL);
+ visitScalarBinary(I, ISD::MUL);
}
- void visitURem(User &I) { visitIntBinary(I, ISD::UREM, 0); }
- void visitSRem(User &I) { visitIntBinary(I, ISD::SREM, 0); }
- void visitFRem(User &I) { visitFPBinary (I, ISD::FREM, 0); }
- void visitUDiv(User &I) { visitIntBinary(I, ISD::UDIV, ISD::VUDIV); }
- void visitSDiv(User &I) { visitIntBinary(I, ISD::SDIV, ISD::VSDIV); }
- void visitFDiv(User &I) { visitFPBinary (I, ISD::FDIV, ISD::VSDIV); }
- void visitAnd(User &I) { visitIntBinary(I, ISD::AND, ISD::VAND); }
- void visitOr (User &I) { visitIntBinary(I, ISD::OR, ISD::VOR); }
- void visitXor(User &I) { visitIntBinary(I, ISD::XOR, ISD::VXOR); }
- void visitShl(User &I) { visitShift(I, ISD::SHL); }
+ void visitURem(User &I) { visitScalarBinary(I, ISD::UREM); }
+ void visitSRem(User &I) { visitScalarBinary(I, ISD::SREM); }
+ void visitFRem(User &I) { visitScalarBinary(I, ISD::FREM); }
+ void visitUDiv(User &I) { visitEitherBinary(I, ISD::UDIV, ISD::VUDIV); }
+ void visitSDiv(User &I) { visitEitherBinary(I, ISD::SDIV, ISD::VSDIV); }
+ void visitFDiv(User &I) { visitEitherBinary(I, ISD::FDIV, ISD::VSDIV); }
+ void visitAnd (User &I) { visitEitherBinary(I, ISD::AND, ISD::VAND ); }
+ void visitOr (User &I) { visitEitherBinary(I, ISD::OR, ISD::VOR ); }
+ void visitXor (User &I) { visitEitherBinary(I, ISD::XOR, ISD::VXOR ); }
+ void visitShl (User &I) { visitShift(I, ISD::SHL); }
void visitLShr(User &I) { visitShift(I, ISD::SRL); }
void visitAShr(User &I) { visitShift(I, ISD::SRA); }
void visitICmp(User &I);
void SelectionDAGLowering::visitSub(User &I) {
// -0.0 - X --> fneg
- if (I.getType()->isFloatingPoint()) {
+ const Type *Ty = I.getType();
+ if (isa<PackedType>(Ty)) {
+ visitVectorBinary(I, ISD::VSUB);
+ } else if (Ty->isFloatingPoint()) {
if (ConstantFP *CFP = dyn_cast<ConstantFP>(I.getOperand(0)))
if (CFP->isExactlyValue(-0.0)) {
SDOperand Op2 = getValue(I.getOperand(1));
setValue(&I, DAG.getNode(ISD::FNEG, Op2.getValueType(), Op2));
return;
}
- visitFPBinary(I, ISD::FSUB, ISD::VSUB);
+ visitScalarBinary(I, ISD::FSUB);
} else
- visitIntBinary(I, ISD::SUB, ISD::VSUB);
+ visitScalarBinary(I, ISD::SUB);
}
-void
-SelectionDAGLowering::visitIntBinary(User &I, unsigned IntOp, unsigned VecOp) {
- const Type *Ty = I.getType();
+void SelectionDAGLowering::visitScalarBinary(User &I, unsigned OpCode) {
SDOperand Op1 = getValue(I.getOperand(0));
SDOperand Op2 = getValue(I.getOperand(1));
-
- if (const PackedType *PTy = dyn_cast<PackedType>(Ty)) {
- SDOperand Num = DAG.getConstant(PTy->getNumElements(), MVT::i32);
- SDOperand Typ = DAG.getValueType(TLI.getValueType(PTy->getElementType()));
- setValue(&I, DAG.getNode(VecOp, MVT::Vector, Op1, Op2, Num, Typ));
- } else {
- setValue(&I, DAG.getNode(IntOp, Op1.getValueType(), Op1, Op2));
- }
+
+ setValue(&I, DAG.getNode(OpCode, Op1.getValueType(), Op1, Op2));
}
-void
-SelectionDAGLowering::visitFPBinary(User &I, unsigned FPOp, unsigned VecOp) {
- const Type *Ty = I.getType();
- SDOperand Op1 = getValue(I.getOperand(0));
- SDOperand Op2 = getValue(I.getOperand(1));
+void
+SelectionDAGLowering::visitVectorBinary(User &I, unsigned OpCode) {
+ assert(isa<PackedType>(I.getType()));
+ const PackedType *Ty = cast<PackedType>(I.getType());
+ SDOperand Typ = DAG.getValueType(TLI.getValueType(Ty->getElementType()));
+
+ setValue(&I, DAG.getNode(OpCode, MVT::Vector,
+ getValue(I.getOperand(0)),
+ getValue(I.getOperand(1)),
+ DAG.getConstant(Ty->getNumElements(), MVT::i32),
+ Typ));
+}
- if (const PackedType *PTy = dyn_cast<PackedType>(Ty)) {
- SDOperand Num = DAG.getConstant(PTy->getNumElements(), MVT::i32);
- SDOperand Typ = DAG.getValueType(TLI.getValueType(PTy->getElementType()));
- setValue(&I, DAG.getNode(VecOp, MVT::Vector, Op1, Op2, Num, Typ));
- } else {
- setValue(&I, DAG.getNode(FPOp, Op1.getValueType(), Op1, Op2));
- }
+void SelectionDAGLowering::visitEitherBinary(User &I, unsigned ScalarOp,
+ unsigned VectorOp) {
+ if (isa<PackedType>(I.getType()))
+ visitVectorBinary(I, VectorOp);
+ else
+ visitScalarBinary(I, ScalarOp);
}
void SelectionDAGLowering::visitShift(User &I, unsigned Opcode) {
const IntegerType *SITy = cast<IntegerType>(SrcTy);
unsigned SBitWidth = SITy->getBitWidth();
assert(SBitWidth <= 64 && "Integer types > 64 bits not supported");
- assert(DstTy->isFloatingPoint() && "Invalid UIToFP instruction");
+ assert(DstTy->isFloatingPoint() && "Invalid SIToFP instruction");
int64_t Converted = 0;
if (SBitWidth == 1)
Converted = 0LL - Src.Int1Val;
// Can convert store if the incoming value is convertible and if the
// result will preserve semantics...
const Type *Op0Ty = I->getOperand(0)->getType();
- if (!(Op0Ty->isInteger() ^ ElTy->isInteger()) &&
- !(Op0Ty->isFloatingPoint() ^ ElTy->isFloatingPoint()))
+ if (Op0Ty->isInteger() == ElTy->isInteger() &&
+ Op0Ty->isFloatingPoint() == ElTy->isFloatingPoint())
return ExpressionConvertibleToType(I->getOperand(0), ElTy, CTMap, TD);
}
return false;
if (Constant *SOVConstant = dyn_cast<Constant>(GS.StoredOnceValue))
if (GV->getType()->getElementType() != Type::Int1Ty &&
!GV->getType()->getElementType()->isFloatingPoint() &&
+ !isa<PackedType>(GV->getType()->getElementType()) &&
!GS.HasPHIUser) {
DOUT << " *** SHRINKING TO BOOL: " << *GV;
ShrinkGlobalToBoolean(GV, SOVConstant);
/// LowerNegateToMultiply - Replace 0-X with X*-1.
///
static Instruction *LowerNegateToMultiply(Instruction *Neg) {
- Constant *Cst;
- if (Neg->getType()->isFloatingPoint())
- Cst = ConstantFP::get(Neg->getType(), -1);
- else
- Cst = ConstantInt::getAllOnesValue(Neg->getType());
+ Constant *Cst = ConstantInt::getAllOnesValue(Neg->getType());
std::string NegName = Neg->getName(); Neg->setName("");
Instruction *Res = BinaryOperator::createMul(Neg->getOperand(1), Cst, NegName,
std::map<Value*, unsigned> FactorOccurrences;
unsigned MaxOcc = 0;
Value *MaxOccVal = 0;
- if (!I->getType()->isFloatingPoint()) {
- for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
- if (BinaryOperator *BOp = dyn_cast<BinaryOperator>(Ops[i].Op))
- if (BOp->getOpcode() == Instruction::Mul && BOp->use_empty()) {
- // Compute all of the factors of this added value.
- std::vector<Value*> Factors;
- FindSingleUseMultiplyFactors(BOp, Factors);
- assert(Factors.size() > 1 && "Bad linearize!");
-
- // Add one to FactorOccurrences for each unique factor in this op.
- if (Factors.size() == 2) {
- unsigned Occ = ++FactorOccurrences[Factors[0]];
- if (Occ > MaxOcc) { MaxOcc = Occ; MaxOccVal = Factors[0]; }
- if (Factors[0] != Factors[1]) { // Don't double count A*A.
- Occ = ++FactorOccurrences[Factors[1]];
- if (Occ > MaxOcc) { MaxOcc = Occ; MaxOccVal = Factors[1]; }
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
+ if (BinaryOperator *BOp = dyn_cast<BinaryOperator>(Ops[i].Op)) {
+ if (BOp->getOpcode() == Instruction::Mul && BOp->use_empty()) {
+ // Compute all of the factors of this added value.
+ std::vector<Value*> Factors;
+ FindSingleUseMultiplyFactors(BOp, Factors);
+ assert(Factors.size() > 1 && "Bad linearize!");
+
+ // Add one to FactorOccurrences for each unique factor in this op.
+ if (Factors.size() == 2) {
+ unsigned Occ = ++FactorOccurrences[Factors[0]];
+ if (Occ > MaxOcc) { MaxOcc = Occ; MaxOccVal = Factors[0]; }
+ if (Factors[0] != Factors[1]) { // Don't double count A*A.
+ Occ = ++FactorOccurrences[Factors[1]];
+ if (Occ > MaxOcc) { MaxOcc = Occ; MaxOccVal = Factors[1]; }
+ }
+ } else {
+ std::set<Value*> Duplicates;
+ for (unsigned i = 0, e = Factors.size(); i != e; ++i) {
+ if (Duplicates.insert(Factors[i]).second) {
+ unsigned Occ = ++FactorOccurrences[Factors[i]];
+ if (Occ > MaxOcc) { MaxOcc = Occ; MaxOccVal = Factors[i]; }
}
- } else {
- std::set<Value*> Duplicates;
- for (unsigned i = 0, e = Factors.size(); i != e; ++i)
- if (Duplicates.insert(Factors[i]).second) {
- unsigned Occ = ++FactorOccurrences[Factors[i]];
- if (Occ > MaxOcc) { MaxOcc = Occ; MaxOccVal = Factors[i]; }
- }
}
}
+ }
}
}
return 0;
} else if (StoreInst *SI = dyn_cast<StoreInst>(User)) {
- // Storing the pointer, not the into the value?
+ // Storing the pointer, not into the value?
if (SI->getOperand(0) == V) return 0;
// NOTE: We could handle storing of FP imms into integers here!
/// specify the full Instruction::OPCODE identifier.
///
Constant *ConstantExpr::getNeg(Constant *C) {
- if (!C->getType()->isFloatingPoint())
- return get(Instruction::Sub, getNullValue(C->getType()), C);
- else
- return get(Instruction::Sub, ConstantFP::get(C->getType(), -0.0), C);
+ return get(Instruction::Sub,
+ ConstantExpr::getZeroValueForNegationExpr(C->getType()),
+ C);
}
Constant *ConstantExpr::getNot(Constant *C) {
assert(isa<ConstantInt>(C) && "Cannot NOT a nonintegral type!");
return getShuffleVectorTy(V1->getType(), V1, V2, Mask);
}
+Constant *ConstantExpr::getZeroValueForNegationExpr(const Type *Ty) {
+ if ((const PackedType *PTy = dyn_cast<PackedType>(Ty)) &&
+ PTy->getElementType()->isFloatingPoint()) {
+ std::vector<Constant*> zeros(PTy->getNumElements(),
+ ConstantFP::get(PTy->getElementType(), -0.0));
+ return ConstantPacked::get(PTy, zeros);
+ }
+
+ if (Ty->isFloatingPoint())
+ return ConstantFP::get(Ty, -0.0);
+
+ return Constant::getNullValue(Ty);
+}
+
// destroyConstant - Remove the constant from the constant table...
//
void ConstantExpr::destroyConstant() {
BinaryOperator *BinaryOperator::createNeg(Value *Op, const std::string &Name,
Instruction *InsertBefore) {
- if (!Op->getType()->isFloatingPoint())
- return new BinaryOperator(Instruction::Sub,
- Constant::getNullValue(Op->getType()), Op,
- Op->getType(), Name, InsertBefore);
- else
- return new BinaryOperator(Instruction::Sub,
- ConstantFP::get(Op->getType(), -0.0), Op,
- Op->getType(), Name, InsertBefore);
+ Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType());
+ return new BinaryOperator(Instruction::Sub,
+ zero, Op,
+ Op->getType(), Name, InsertBefore);
}
BinaryOperator *BinaryOperator::createNeg(Value *Op, const std::string &Name,
BasicBlock *InsertAtEnd) {
- if (!Op->getType()->isFloatingPoint())
- return new BinaryOperator(Instruction::Sub,
- Constant::getNullValue(Op->getType()), Op,
- Op->getType(), Name, InsertAtEnd);
- else
- return new BinaryOperator(Instruction::Sub,
- ConstantFP::get(Op->getType(), -0.0), Op,
- Op->getType(), Name, InsertAtEnd);
+ Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType());
+ return new BinaryOperator(Instruction::Sub,
+ zero, Op,
+ Op->getType(), Name, InsertAtEnd);
}
BinaryOperator *BinaryOperator::createNot(Value *Op, const std::string &Name,
bool BinaryOperator::isNeg(const Value *V) {
if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
if (Bop->getOpcode() == Instruction::Sub)
- if (!V->getType()->isFloatingPoint())
- return Bop->getOperand(0) == Constant::getNullValue(Bop->getType());
- else
- return Bop->getOperand(0) == ConstantFP::get(Bop->getType(), -0.0);
+ return Bop->getOperand(0) ==
+ ConstantExpr::getZeroValueForNegationExpr(Bop->getType());
return false;
}
assert(Op0Ty == Op1Ty &&
"Both operands to ICmp instruction are not of the same type!");
// Check that the operands are the right type
- assert(Op0Ty->isInteger() || isa<PointerType>(Op0Ty) ||
- (isa<PackedType>(Op0Ty) &&
- cast<PackedType>(Op0Ty)->getElementType()->isInteger()) &&
+ assert((Op0Ty->isInteger() || isa<PointerType>(Op0Ty)) &&
"Invalid operand types for ICmp instruction");
return;
}
assert(Op0Ty == Op1Ty &&
"Both operands to FCmp instruction are not of the same type!");
// Check that the operands are the right type
- assert(Op0Ty->isFloatingPoint() || (isa<PackedType>(Op0Ty) &&
- cast<PackedType>(Op0Ty)->getElementType()->isFloatingPoint()) &&
+ assert(Op0Ty->isFloatingPoint() &&
"Invalid operand types for FCmp instruction");
}
assert(Op0Ty == Op1Ty &&
"Both operands to ICmp instruction are not of the same type!");
// Check that the operands are the right type
- assert(Op0Ty->isInteger() || isa<PointerType>(Op0Ty) ||
- (isa<PackedType>(Op0Ty) &&
- cast<PackedType>(Op0Ty)->getElementType()->isInteger()) &&
+ assert(Op0Ty->isInteger() || isa<PointerType>(Op0Ty) &&
"Invalid operand types for ICmp instruction");
return;
}
assert(Op0Ty == Op1Ty &&
"Both operands to FCmp instruction are not of the same type!");
// Check that the operands are the right type
- assert(Op0Ty->isFloatingPoint() || (isa<PackedType>(Op0Ty) &&
- cast<PackedType>(Op0Ty)->getElementType()->isFloatingPoint()) &&
+ assert(Op0Ty->isFloatingPoint() &&
"Invalid operand types for FCmp instruction");
}
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