/// If so, decompose it, returning some value X, such that Val is
/// X*Scale+Offset.
///
-static Value *DecomposeSimpleLinearExpr(Value *Val, unsigned &Scale,
+static Value *decomposeSimpleLinearExpr(Value *Val, unsigned &Scale,
uint64_t &Offset) {
if (ConstantInt *CI = dyn_cast<ConstantInt>(Val)) {
Offset = CI->getZExtValue();
// where C1 is divisible by C2.
unsigned SubScale;
Value *SubVal =
- DecomposeSimpleLinearExpr(I->getOperand(0), SubScale, Offset);
+ decomposeSimpleLinearExpr(I->getOperand(0), SubScale, Offset);
Offset += RHS->getZExtValue();
Scale = SubScale;
return SubVal;
unsigned ArraySizeScale;
uint64_t ArrayOffset;
Value *NumElements = // See if the array size is a decomposable linear expr.
- DecomposeSimpleLinearExpr(AI.getOperand(0), ArraySizeScale, ArrayOffset);
+ decomposeSimpleLinearExpr(AI.getOperand(0), ArraySizeScale, ArrayOffset);
// If we can now satisfy the modulus, by using a non-1 scale, we really can
// do the xform.
///
/// This function works on both vectors and scalars.
///
-static bool CanEvaluateTruncated(Value *V, Type *Ty, InstCombiner &IC,
+static bool canEvaluateTruncated(Value *V, Type *Ty, InstCombiner &IC,
Instruction *CxtI) {
// We can always evaluate constants in another type.
if (isa<Constant>(V))
case Instruction::Or:
case Instruction::Xor:
// These operators can all arbitrarily be extended or truncated.
- return CanEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI) &&
- CanEvaluateTruncated(I->getOperand(1), Ty, IC, CxtI);
+ return canEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI) &&
+ canEvaluateTruncated(I->getOperand(1), Ty, IC, CxtI);
case Instruction::UDiv:
case Instruction::URem: {
APInt Mask = APInt::getHighBitsSet(OrigBitWidth, OrigBitWidth-BitWidth);
if (IC.MaskedValueIsZero(I->getOperand(0), Mask, 0, CxtI) &&
IC.MaskedValueIsZero(I->getOperand(1), Mask, 0, CxtI)) {
- return CanEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI) &&
- CanEvaluateTruncated(I->getOperand(1), Ty, IC, CxtI);
+ return canEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI) &&
+ canEvaluateTruncated(I->getOperand(1), Ty, IC, CxtI);
}
}
break;
if (ConstantInt *CI = dyn_cast<ConstantInt>(I->getOperand(1))) {
uint32_t BitWidth = Ty->getScalarSizeInBits();
if (CI->getLimitedValue(BitWidth) < BitWidth)
- return CanEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI);
+ return canEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI);
}
break;
case Instruction::LShr:
if (IC.MaskedValueIsZero(I->getOperand(0),
APInt::getHighBitsSet(OrigBitWidth, OrigBitWidth-BitWidth), 0, CxtI) &&
CI->getLimitedValue(BitWidth) < BitWidth) {
- return CanEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI);
+ return canEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI);
}
}
break;
return true;
case Instruction::Select: {
SelectInst *SI = cast<SelectInst>(I);
- return CanEvaluateTruncated(SI->getTrueValue(), Ty, IC, CxtI) &&
- CanEvaluateTruncated(SI->getFalseValue(), Ty, IC, CxtI);
+ return canEvaluateTruncated(SI->getTrueValue(), Ty, IC, CxtI) &&
+ canEvaluateTruncated(SI->getFalseValue(), Ty, IC, CxtI);
}
case Instruction::PHI: {
// We can change a phi if we can change all operands. Note that we never
// instructions with a single use.
PHINode *PN = cast<PHINode>(I);
for (Value *IncValue : PN->incoming_values())
- if (!CanEvaluateTruncated(IncValue, Ty, IC, CxtI))
+ if (!canEvaluateTruncated(IncValue, Ty, IC, CxtI))
return false;
return true;
}
// expression tree to something weird like i93 unless the source is also
// strange.
if ((DestTy->isVectorTy() || ShouldChangeType(SrcTy, DestTy)) &&
- CanEvaluateTruncated(Src, DestTy, *this, &CI)) {
+ canEvaluateTruncated(Src, DestTy, *this, &CI)) {
// If this cast is a truncate, evaluting in a different type always
// eliminates the cast, so it is always a win.
/// clear the top bits anyway, doing this has no extra cost.
///
/// This function works on both vectors and scalars.
-static bool CanEvaluateZExtd(Value *V, Type *Ty, unsigned &BitsToClear,
+static bool canEvaluateZExtd(Value *V, Type *Ty, unsigned &BitsToClear,
InstCombiner &IC, Instruction *CxtI) {
BitsToClear = 0;
if (isa<Constant>(V))
case Instruction::Add:
case Instruction::Sub:
case Instruction::Mul:
- if (!CanEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI) ||
- !CanEvaluateZExtd(I->getOperand(1), Ty, Tmp, IC, CxtI))
+ if (!canEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI) ||
+ !canEvaluateZExtd(I->getOperand(1), Ty, Tmp, IC, CxtI))
return false;
// These can all be promoted if neither operand has 'bits to clear'.
if (BitsToClear == 0 && Tmp == 0)
// We can promote shl(x, cst) if we can promote x. Since shl overwrites the
// upper bits we can reduce BitsToClear by the shift amount.
if (ConstantInt *Amt = dyn_cast<ConstantInt>(I->getOperand(1))) {
- if (!CanEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI))
+ if (!canEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI))
return false;
uint64_t ShiftAmt = Amt->getZExtValue();
BitsToClear = ShiftAmt < BitsToClear ? BitsToClear - ShiftAmt : 0;
// We can promote lshr(x, cst) if we can promote x. This requires the
// ultimate 'and' to clear out the high zero bits we're clearing out though.
if (ConstantInt *Amt = dyn_cast<ConstantInt>(I->getOperand(1))) {
- if (!CanEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI))
+ if (!canEvaluateZExtd(I->getOperand(0), Ty, BitsToClear, IC, CxtI))
return false;
BitsToClear += Amt->getZExtValue();
if (BitsToClear > V->getType()->getScalarSizeInBits())
// Cannot promote variable LSHR.
return false;
case Instruction::Select:
- if (!CanEvaluateZExtd(I->getOperand(1), Ty, Tmp, IC, CxtI) ||
- !CanEvaluateZExtd(I->getOperand(2), Ty, BitsToClear, IC, CxtI) ||
+ if (!canEvaluateZExtd(I->getOperand(1), Ty, Tmp, IC, CxtI) ||
+ !canEvaluateZExtd(I->getOperand(2), Ty, BitsToClear, IC, CxtI) ||
// TODO: If important, we could handle the case when the BitsToClear are
// known zero in the disagreeing side.
Tmp != BitsToClear)
// get into trouble with cyclic PHIs here because we only consider
// instructions with a single use.
PHINode *PN = cast<PHINode>(I);
- if (!CanEvaluateZExtd(PN->getIncomingValue(0), Ty, BitsToClear, IC, CxtI))
+ if (!canEvaluateZExtd(PN->getIncomingValue(0), Ty, BitsToClear, IC, CxtI))
return false;
for (unsigned i = 1, e = PN->getNumIncomingValues(); i != e; ++i)
- if (!CanEvaluateZExtd(PN->getIncomingValue(i), Ty, Tmp, IC, CxtI) ||
+ if (!canEvaluateZExtd(PN->getIncomingValue(i), Ty, Tmp, IC, CxtI) ||
// TODO: If important, we could handle the case when the BitsToClear
// are known zero in the disagreeing input.
Tmp != BitsToClear)
// strange.
unsigned BitsToClear;
if ((DestTy->isVectorTy() || ShouldChangeType(SrcTy, DestTy)) &&
- CanEvaluateZExtd(Src, DestTy, BitsToClear, *this, &CI)) {
+ canEvaluateZExtd(Src, DestTy, BitsToClear, *this, &CI)) {
assert(BitsToClear < SrcTy->getScalarSizeInBits() &&
"Unreasonable BitsToClear");
///
/// This function works on both vectors and scalars.
///
-static bool CanEvaluateSExtd(Value *V, Type *Ty) {
+static bool canEvaluateSExtd(Value *V, Type *Ty) {
assert(V->getType()->getScalarSizeInBits() < Ty->getScalarSizeInBits() &&
"Can't sign extend type to a smaller type");
// If this is a constant, it can be trivially promoted.
case Instruction::Sub:
case Instruction::Mul:
// These operators can all arbitrarily be extended if their inputs can.
- return CanEvaluateSExtd(I->getOperand(0), Ty) &&
- CanEvaluateSExtd(I->getOperand(1), Ty);
+ return canEvaluateSExtd(I->getOperand(0), Ty) &&
+ canEvaluateSExtd(I->getOperand(1), Ty);
//case Instruction::Shl: TODO
//case Instruction::LShr: TODO
case Instruction::Select:
- return CanEvaluateSExtd(I->getOperand(1), Ty) &&
- CanEvaluateSExtd(I->getOperand(2), Ty);
+ return canEvaluateSExtd(I->getOperand(1), Ty) &&
+ canEvaluateSExtd(I->getOperand(2), Ty);
case Instruction::PHI: {
// We can change a phi if we can change all operands. Note that we never
// instructions with a single use.
PHINode *PN = cast<PHINode>(I);
for (Value *IncValue : PN->incoming_values())
- if (!CanEvaluateSExtd(IncValue, Ty)) return false;
+ if (!canEvaluateSExtd(IncValue, Ty)) return false;
return true;
}
default:
// expression tree to something weird like i93 unless the source is also
// strange.
if ((DestTy->isVectorTy() || ShouldChangeType(SrcTy, DestTy)) &&
- CanEvaluateSExtd(Src, DestTy)) {
+ canEvaluateSExtd(Src, DestTy)) {
// Okay, we can transform this! Insert the new expression now.
DEBUG(dbgs() << "ICE: EvaluateInDifferentType converting expression type"
" to avoid sign extend: " << CI);
/// Return a Constant* for the specified floating-point constant if it fits
/// in the specified FP type without changing its value.
-static Constant *FitsInFPType(ConstantFP *CFP, const fltSemantics &Sem) {
+static Constant *fitsInFPType(ConstantFP *CFP, const fltSemantics &Sem) {
bool losesInfo;
APFloat F = CFP->getValueAPF();
(void)F.convert(Sem, APFloat::rmNearestTiesToEven, &losesInfo);
/// If this is a floating-point extension instruction, look
/// through it until we get the source value.
-static Value *LookThroughFPExtensions(Value *V) {
+static Value *lookThroughFPExtensions(Value *V) {
if (Instruction *I = dyn_cast<Instruction>(V))
if (I->getOpcode() == Instruction::FPExt)
- return LookThroughFPExtensions(I->getOperand(0));
+ return lookThroughFPExtensions(I->getOperand(0));
// If this value is a constant, return the constant in the smallest FP type
// that can accurately represent it. This allows us to turn
if (CFP->getType() == Type::getPPC_FP128Ty(V->getContext()))
return V; // No constant folding of this.
// See if the value can be truncated to half and then reextended.
- if (Value *V = FitsInFPType(CFP, APFloat::IEEEhalf))
+ if (Value *V = fitsInFPType(CFP, APFloat::IEEEhalf))
return V;
// See if the value can be truncated to float and then reextended.
- if (Value *V = FitsInFPType(CFP, APFloat::IEEEsingle))
+ if (Value *V = fitsInFPType(CFP, APFloat::IEEEsingle))
return V;
if (CFP->getType()->isDoubleTy())
return V; // Won't shrink.
- if (Value *V = FitsInFPType(CFP, APFloat::IEEEdouble))
+ if (Value *V = fitsInFPType(CFP, APFloat::IEEEdouble))
return V;
// Don't try to shrink to various long double types.
}
// is explained below in the various case statements.
BinaryOperator *OpI = dyn_cast<BinaryOperator>(CI.getOperand(0));
if (OpI && OpI->hasOneUse()) {
- Value *LHSOrig = LookThroughFPExtensions(OpI->getOperand(0));
- Value *RHSOrig = LookThroughFPExtensions(OpI->getOperand(1));
+ Value *LHSOrig = lookThroughFPExtensions(OpI->getOperand(0));
+ Value *RHSOrig = lookThroughFPExtensions(OpI->getOperand(1));
unsigned OpWidth = OpI->getType()->getFPMantissaWidth();
unsigned LHSWidth = LHSOrig->getType()->getFPMantissaWidth();
unsigned RHSWidth = RHSOrig->getType()->getFPMantissaWidth();
/// Try to replace it with a shuffle (and vector/vector bitcast) if possible.
///
/// The source and destination vector types may have different element types.
-static Instruction *OptimizeVectorResize(Value *InVal, VectorType *DestTy,
+static Instruction *optimizeVectorResize(Value *InVal, VectorType *DestTy,
InstCombiner &IC) {
// We can only do this optimization if the output is a multiple of the input
// element size, or the input is a multiple of the output element size.
///
/// This returns false if the pattern can't be matched or true if it can,
/// filling in Elements with the elements found here.
-static bool CollectInsertionElements(Value *V, unsigned Shift,
+static bool collectInsertionElements(Value *V, unsigned Shift,
SmallVectorImpl<Value *> &Elements,
Type *VecEltTy, bool isBigEndian) {
assert(isMultipleOfTypeSize(Shift, VecEltTy) &&
// If the constant is the size of a vector element, we just need to bitcast
// it to the right type so it gets properly inserted.
if (NumElts == 1)
- return CollectInsertionElements(ConstantExpr::getBitCast(C, VecEltTy),
+ return collectInsertionElements(ConstantExpr::getBitCast(C, VecEltTy),
Shift, Elements, VecEltTy, isBigEndian);
// Okay, this is a constant that covers multiple elements. Slice it up into
Constant *Piece = ConstantExpr::getLShr(C, ConstantInt::get(C->getType(),
ShiftI));
Piece = ConstantExpr::getTrunc(Piece, ElementIntTy);
- if (!CollectInsertionElements(Piece, ShiftI, Elements, VecEltTy,
+ if (!collectInsertionElements(Piece, ShiftI, Elements, VecEltTy,
isBigEndian))
return false;
}
switch (I->getOpcode()) {
default: return false; // Unhandled case.
case Instruction::BitCast:
- return CollectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
+ return collectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
isBigEndian);
case Instruction::ZExt:
if (!isMultipleOfTypeSize(
I->getOperand(0)->getType()->getPrimitiveSizeInBits(),
VecEltTy))
return false;
- return CollectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
+ return collectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
isBigEndian);
case Instruction::Or:
- return CollectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
+ return collectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
isBigEndian) &&
- CollectInsertionElements(I->getOperand(1), Shift, Elements, VecEltTy,
+ collectInsertionElements(I->getOperand(1), Shift, Elements, VecEltTy,
isBigEndian);
case Instruction::Shl: {
// Must be shifting by a constant that is a multiple of the element size.
if (!CI) return false;
Shift += CI->getZExtValue();
if (!isMultipleOfTypeSize(Shift, VecEltTy)) return false;
- return CollectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
+ return collectInsertionElements(I->getOperand(0), Shift, Elements, VecEltTy,
isBigEndian);
}
/// %tmp43 = bitcast i64 %ins35 to <2 x float>
///
/// Into two insertelements that do "buildvector{%inc, %inc5}".
-static Value *OptimizeIntegerToVectorInsertions(BitCastInst &CI,
+static Value *optimizeIntegerToVectorInsertions(BitCastInst &CI,
InstCombiner &IC) {
VectorType *DestVecTy = cast<VectorType>(CI.getType());
Value *IntInput = CI.getOperand(0);
SmallVector<Value*, 8> Elements(DestVecTy->getNumElements());
- if (!CollectInsertionElements(IntInput, 0, Elements,
+ if (!collectInsertionElements(IntInput, 0, Elements,
DestVecTy->getElementType(),
IC.getDataLayout().isBigEndian()))
return nullptr;
/// See if we can optimize an integer->float/double bitcast.
/// The various long double bitcasts can't get in here.
-static Instruction *OptimizeIntToFloatBitCast(BitCastInst &CI, InstCombiner &IC,
+static Instruction *optimizeIntToFloatBitCast(BitCastInst &CI, InstCombiner &IC,
const DataLayout &DL) {
Value *Src = CI.getOperand(0);
Type *DestTy = CI.getType();
// Try to optimize int -> float bitcasts.
if ((DestTy->isFloatTy() || DestTy->isDoubleTy()) && isa<IntegerType>(SrcTy))
- if (Instruction *I = OptimizeIntToFloatBitCast(CI, *this, DL))
+ if (Instruction *I = optimizeIntToFloatBitCast(CI, *this, DL))
return I;
if (VectorType *DestVTy = dyn_cast<VectorType>(DestTy)) {
CastInst *SrcCast = cast<CastInst>(Src);
if (BitCastInst *BCIn = dyn_cast<BitCastInst>(SrcCast->getOperand(0)))
if (isa<VectorType>(BCIn->getOperand(0)->getType()))
- if (Instruction *I = OptimizeVectorResize(BCIn->getOperand(0),
+ if (Instruction *I = optimizeVectorResize(BCIn->getOperand(0),
cast<VectorType>(DestTy), *this))
return I;
}
// If the input is an 'or' instruction, we may be doing shifts and ors to
// assemble the elements of the vector manually. Try to rip the code out
// and replace it with insertelements.
- if (Value *V = OptimizeIntegerToVectorInsertions(CI, *this))
+ if (Value *V = optimizeIntegerToVectorInsertions(CI, *this))
return ReplaceInstUsesWith(CI, V);
}
}
projects / oota-llvm.git / commitdiff