mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-06 06:33:24 +00:00
Remove trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117727 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson
parent
a7c78220c4
commit
09fd64644d
@ -18,7 +18,7 @@ using namespace llvm;
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/// CheapToScalarize - Return true if the value is cheaper to scalarize than it
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/// is to leave as a vector operation.
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static bool CheapToScalarize(Value *V, bool isConstant) {
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if (isa<ConstantAggregateZero>(V))
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if (isa<ConstantAggregateZero>(V))
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return true;
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if (ConstantVector *C = dyn_cast<ConstantVector>(V)) {
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if (isConstant) return true;
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@ -31,7 +31,7 @@ static bool CheapToScalarize(Value *V, bool isConstant) {
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}
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Instruction *I = dyn_cast<Instruction>(V);
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if (!I) return false;
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// Insert element gets simplified to the inserted element or is deleted if
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// this is constant idx extract element and its a constant idx insertelt.
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if (I->getOpcode() == Instruction::InsertElement && isConstant &&
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@ -49,7 +49,7 @@ static bool CheapToScalarize(Value *V, bool isConstant) {
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(CheapToScalarize(CI->getOperand(0), isConstant) ||
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CheapToScalarize(CI->getOperand(1), isConstant)))
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return true;
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return false;
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}
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@ -61,7 +61,7 @@ static std::vector<int> getShuffleMask(const ShuffleVectorInst *SVI) {
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return std::vector<int>(NElts, 0);
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if (isa<UndefValue>(SVI->getOperand(2)))
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return std::vector<int>(NElts, -1);
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std::vector<int> Result;
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const ConstantVector *CP = cast<ConstantVector>(SVI->getOperand(2));
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for (User::const_op_iterator i = CP->op_begin(), e = CP->op_end(); i!=e; ++i)
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@ -81,41 +81,41 @@ static Value *FindScalarElement(Value *V, unsigned EltNo) {
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unsigned Width = PTy->getNumElements();
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if (EltNo >= Width) // Out of range access.
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return UndefValue::get(PTy->getElementType());
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if (isa<UndefValue>(V))
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return UndefValue::get(PTy->getElementType());
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if (isa<ConstantAggregateZero>(V))
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return Constant::getNullValue(PTy->getElementType());
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if (ConstantVector *CP = dyn_cast<ConstantVector>(V))
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return CP->getOperand(EltNo);
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if (InsertElementInst *III = dyn_cast<InsertElementInst>(V)) {
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// If this is an insert to a variable element, we don't know what it is.
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if (!isa<ConstantInt>(III->getOperand(2)))
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if (!isa<ConstantInt>(III->getOperand(2)))
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return 0;
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unsigned IIElt = cast<ConstantInt>(III->getOperand(2))->getZExtValue();
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// If this is an insert to the element we are looking for, return the
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// inserted value.
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if (EltNo == IIElt)
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if (EltNo == IIElt)
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return III->getOperand(1);
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// Otherwise, the insertelement doesn't modify the value, recurse on its
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// vector input.
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return FindScalarElement(III->getOperand(0), EltNo);
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}
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if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(V)) {
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unsigned LHSWidth =
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cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();
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int InEl = getShuffleMask(SVI)[EltNo];
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if (InEl < 0)
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if (InEl < 0)
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return UndefValue::get(PTy->getElementType());
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if (InEl < (int)LHSWidth)
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return FindScalarElement(SVI->getOperand(0), InEl);
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return FindScalarElement(SVI->getOperand(1), InEl - LHSWidth);
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}
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// Otherwise, we don't know.
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return 0;
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}
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@ -124,11 +124,11 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
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// If vector val is undef, replace extract with scalar undef.
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if (isa<UndefValue>(EI.getOperand(0)))
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return ReplaceInstUsesWith(EI, UndefValue::get(EI.getType()));
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// If vector val is constant 0, replace extract with scalar 0.
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if (isa<ConstantAggregateZero>(EI.getOperand(0)))
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return ReplaceInstUsesWith(EI, Constant::getNullValue(EI.getType()));
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if (ConstantVector *C = dyn_cast<ConstantVector>(EI.getOperand(0))) {
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// If vector val is constant with all elements the same, replace EI with
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// that element. When the elements are not identical, we cannot replace yet
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@ -136,24 +136,24 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
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Constant *op0 = C->getOperand(0);
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for (unsigned i = 1; i != C->getNumOperands(); ++i)
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if (C->getOperand(i) != op0) {
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op0 = 0;
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op0 = 0;
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break;
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}
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if (op0)
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return ReplaceInstUsesWith(EI, op0);
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}
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// If extracting a specified index from the vector, see if we can recursively
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// find a previously computed scalar that was inserted into the vector.
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if (ConstantInt *IdxC = dyn_cast<ConstantInt>(EI.getOperand(1))) {
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unsigned IndexVal = IdxC->getZExtValue();
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unsigned VectorWidth = EI.getVectorOperandType()->getNumElements();
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// If this is extracting an invalid index, turn this into undef, to avoid
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// crashing the code below.
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if (IndexVal >= VectorWidth)
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return ReplaceInstUsesWith(EI, UndefValue::get(EI.getType()));
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// This instruction only demands the single element from the input vector.
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// If the input vector has a single use, simplify it based on this use
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// property.
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@ -167,22 +167,22 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
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return &EI;
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}
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}
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if (Value *Elt = FindScalarElement(EI.getOperand(0), IndexVal))
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return ReplaceInstUsesWith(EI, Elt);
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// If the this extractelement is directly using a bitcast from a vector of
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// the same number of elements, see if we can find the source element from
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// it. In this case, we will end up needing to bitcast the scalars.
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if (BitCastInst *BCI = dyn_cast<BitCastInst>(EI.getOperand(0))) {
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if (const VectorType *VT =
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if (const VectorType *VT =
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dyn_cast<VectorType>(BCI->getOperand(0)->getType()))
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if (VT->getNumElements() == VectorWidth)
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if (Value *Elt = FindScalarElement(BCI->getOperand(0), IndexVal))
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return new BitCastInst(Elt, EI.getType());
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}
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}
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if (Instruction *I = dyn_cast<Instruction>(EI.getOperand(0))) {
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// Push extractelement into predecessor operation if legal and
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// profitable to do so
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@ -216,7 +216,7 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
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Value *Src;
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unsigned LHSWidth =
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cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();
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if (SrcIdx < 0)
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return ReplaceInstUsesWith(EI, UndefValue::get(EI.getType()));
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if (SrcIdx < (int)LHSWidth)
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@ -237,42 +237,42 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
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}
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/// CollectSingleShuffleElements - If V is a shuffle of values that ONLY returns
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/// elements from either LHS or RHS, return the shuffle mask and true.
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/// elements from either LHS or RHS, return the shuffle mask and true.
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/// Otherwise, return false.
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static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
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std::vector<Constant*> &Mask) {
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assert(V->getType() == LHS->getType() && V->getType() == RHS->getType() &&
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"Invalid CollectSingleShuffleElements");
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unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
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if (isa<UndefValue>(V)) {
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Mask.assign(NumElts, UndefValue::get(Type::getInt32Ty(V->getContext())));
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return true;
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}
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if (V == LHS) {
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for (unsigned i = 0; i != NumElts; ++i)
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Mask.push_back(ConstantInt::get(Type::getInt32Ty(V->getContext()), i));
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return true;
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}
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if (V == RHS) {
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for (unsigned i = 0; i != NumElts; ++i)
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Mask.push_back(ConstantInt::get(Type::getInt32Ty(V->getContext()),
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i+NumElts));
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return true;
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}
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if (InsertElementInst *IEI = dyn_cast<InsertElementInst>(V)) {
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// If this is an insert of an extract from some other vector, include it.
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Value *VecOp = IEI->getOperand(0);
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Value *ScalarOp = IEI->getOperand(1);
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Value *IdxOp = IEI->getOperand(2);
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if (!isa<ConstantInt>(IdxOp))
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return false;
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unsigned InsertedIdx = cast<ConstantInt>(IdxOp)->getZExtValue();
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if (isa<UndefValue>(ScalarOp)) { // inserting undef into vector.
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// Okay, we can handle this if the vector we are insertinting into is
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// transitively ok.
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@ -280,13 +280,13 @@ static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
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// If so, update the mask to reflect the inserted undef.
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Mask[InsertedIdx] = UndefValue::get(Type::getInt32Ty(V->getContext()));
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return true;
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}
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}
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} else if (ExtractElementInst *EI = dyn_cast<ExtractElementInst>(ScalarOp)){
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if (isa<ConstantInt>(EI->getOperand(1)) &&
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EI->getOperand(0)->getType() == V->getType()) {
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unsigned ExtractedIdx =
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cast<ConstantInt>(EI->getOperand(1))->getZExtValue();
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// This must be extracting from either LHS or RHS.
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if (EI->getOperand(0) == LHS || EI->getOperand(0) == RHS) {
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// Okay, we can handle this if the vector we are insertinting into is
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@ -294,15 +294,14 @@ static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
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if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask)) {
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// If so, update the mask to reflect the inserted value.
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if (EI->getOperand(0) == LHS) {
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Mask[InsertedIdx % NumElts] =
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Mask[InsertedIdx % NumElts] =
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ConstantInt::get(Type::getInt32Ty(V->getContext()),
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ExtractedIdx);
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} else {
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assert(EI->getOperand(0) == RHS);
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Mask[InsertedIdx % NumElts] =
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Mask[InsertedIdx % NumElts] =
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ConstantInt::get(Type::getInt32Ty(V->getContext()),
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ExtractedIdx+NumElts);
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}
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return true;
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}
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@ -311,7 +310,7 @@ static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
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}
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}
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// TODO: Handle shufflevector here!
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return false;
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}
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@ -320,11 +319,11 @@ static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
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/// that computes V and the LHS value of the shuffle.
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static Value *CollectShuffleElements(Value *V, std::vector<Constant*> &Mask,
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Value *&RHS) {
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assert(V->getType()->isVectorTy() &&
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assert(V->getType()->isVectorTy() &&
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(RHS == 0 || V->getType() == RHS->getType()) &&
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"Invalid shuffle!");
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unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
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if (isa<UndefValue>(V)) {
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Mask.assign(NumElts, UndefValue::get(Type::getInt32Ty(V->getContext())));
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return V;
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@ -336,25 +335,25 @@ static Value *CollectShuffleElements(Value *V, std::vector<Constant*> &Mask,
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Value *VecOp = IEI->getOperand(0);
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Value *ScalarOp = IEI->getOperand(1);
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Value *IdxOp = IEI->getOperand(2);
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if (ExtractElementInst *EI = dyn_cast<ExtractElementInst>(ScalarOp)) {
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if (isa<ConstantInt>(EI->getOperand(1)) && isa<ConstantInt>(IdxOp) &&
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EI->getOperand(0)->getType() == V->getType()) {
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unsigned ExtractedIdx =
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cast<ConstantInt>(EI->getOperand(1))->getZExtValue();
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unsigned InsertedIdx = cast<ConstantInt>(IdxOp)->getZExtValue();
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// Either the extracted from or inserted into vector must be RHSVec,
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// otherwise we'd end up with a shuffle of three inputs.
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if (EI->getOperand(0) == RHS || RHS == 0) {
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RHS = EI->getOperand(0);
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Value *V = CollectShuffleElements(VecOp, Mask, RHS);
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Mask[InsertedIdx % NumElts] =
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Mask[InsertedIdx % NumElts] =
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ConstantInt::get(Type::getInt32Ty(V->getContext()),
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NumElts+ExtractedIdx);
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return V;
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}
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if (VecOp == RHS) {
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Value *V = CollectShuffleElements(EI->getOperand(0), Mask, RHS);
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// Everything but the extracted element is replaced with the RHS.
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@ -365,7 +364,7 @@ static Value *CollectShuffleElements(Value *V, std::vector<Constant*> &Mask,
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}
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return V;
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}
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// If this insertelement is a chain that comes from exactly these two
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// vectors, return the vector and the effective shuffle.
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if (CollectSingleShuffleElements(IEI, EI->getOperand(0), RHS, Mask))
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@ -374,7 +373,7 @@ static Value *CollectShuffleElements(Value *V, std::vector<Constant*> &Mask,
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}
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}
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// TODO: Handle shufflevector here!
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// Otherwise, can't do anything fancy. Return an identity vector.
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for (unsigned i = 0; i != NumElts; ++i)
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Mask.push_back(ConstantInt::get(Type::getInt32Ty(V->getContext()), i));
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@ -385,12 +384,12 @@ Instruction *InstCombiner::visitInsertElementInst(InsertElementInst &IE) {
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Value *VecOp = IE.getOperand(0);
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Value *ScalarOp = IE.getOperand(1);
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Value *IdxOp = IE.getOperand(2);
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// Inserting an undef or into an undefined place, remove this.
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if (isa<UndefValue>(ScalarOp) || isa<UndefValue>(IdxOp))
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ReplaceInstUsesWith(IE, VecOp);
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// If the inserted element was extracted from some other vector, and if the
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// If the inserted element was extracted from some other vector, and if the
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// indexes are constant, try to turn this into a shufflevector operation.
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if (ExtractElementInst *EI = dyn_cast<ExtractElementInst>(ScalarOp)) {
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if (isa<ConstantInt>(EI->getOperand(1)) && isa<ConstantInt>(IdxOp) &&
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@ -399,18 +398,18 @@ Instruction *InstCombiner::visitInsertElementInst(InsertElementInst &IE) {
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unsigned ExtractedIdx =
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cast<ConstantInt>(EI->getOperand(1))->getZExtValue();
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unsigned InsertedIdx = cast<ConstantInt>(IdxOp)->getZExtValue();
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if (ExtractedIdx >= NumVectorElts) // Out of range extract.
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return ReplaceInstUsesWith(IE, VecOp);
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if (InsertedIdx >= NumVectorElts) // Out of range insert.
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return ReplaceInstUsesWith(IE, UndefValue::get(IE.getType()));
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// If we are extracting a value from a vector, then inserting it right
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// back into the same place, just use the input vector.
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if (EI->getOperand(0) == VecOp && ExtractedIdx == InsertedIdx)
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return ReplaceInstUsesWith(IE, VecOp);
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return ReplaceInstUsesWith(IE, VecOp);
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// If this insertelement isn't used by some other insertelement, turn it
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// (and any insertelements it points to), into one big shuffle.
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if (!IE.hasOneUse() || !isa<InsertElementInst>(IE.use_back())) {
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@ -424,13 +423,13 @@ Instruction *InstCombiner::visitInsertElementInst(InsertElementInst &IE) {
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}
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}
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}
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unsigned VWidth = cast<VectorType>(VecOp->getType())->getNumElements();
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APInt UndefElts(VWidth, 0);
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APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
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if (SimplifyDemandedVectorElts(&IE, AllOnesEltMask, UndefElts))
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return &IE;
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return 0;
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}
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@ -439,18 +438,18 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
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Value *LHS = SVI.getOperand(0);
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Value *RHS = SVI.getOperand(1);
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std::vector<int> Mask = getShuffleMask(&SVI);
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bool MadeChange = false;
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// Undefined shuffle mask -> undefined value.
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if (isa<UndefValue>(SVI.getOperand(2)))
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return ReplaceInstUsesWith(SVI, UndefValue::get(SVI.getType()));
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unsigned VWidth = cast<VectorType>(SVI.getType())->getNumElements();
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if (VWidth != cast<VectorType>(LHS->getType())->getNumElements())
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return 0;
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APInt UndefElts(VWidth, 0);
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APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
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if (SimplifyDemandedVectorElts(&SVI, AllOnesEltMask, UndefElts)) {
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@ -458,7 +457,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
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RHS = SVI.getOperand(1);
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MadeChange = true;
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}
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// Canonicalize shuffle(x ,x,mask) -> shuffle(x, undef,mask')
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// Canonicalize shuffle(undef,x,mask) -> shuffle(x, undef,mask').
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if (LHS == RHS || isa<UndefValue>(LHS)) {
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@ -466,7 +465,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
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// shuffle(undef,undef,mask) -> undef.
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return ReplaceInstUsesWith(SVI, LHS);
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}
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// Remap any references to RHS to use LHS.
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std::vector<Constant*> Elts;
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for (unsigned i = 0, e = Mask.size(); i != e; ++i) {
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@ -491,23 +490,23 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
|
||||
RHS = SVI.getOperand(1);
|
||||
MadeChange = true;
|
||||
}
|
||||
|
||||
|
||||
// Analyze the shuffle, are the LHS or RHS and identity shuffles?
|
||||
bool isLHSID = true, isRHSID = true;
|
||||
|
||||
|
||||
for (unsigned i = 0, e = Mask.size(); i != e; ++i) {
|
||||
if (Mask[i] < 0) continue; // Ignore undef values.
|
||||
// Is this an identity shuffle of the LHS value?
|
||||
isLHSID &= (Mask[i] == (int)i);
|
||||
|
||||
|
||||
// Is this an identity shuffle of the RHS value?
|
||||
isRHSID &= (Mask[i]-e == i);
|
||||
}
|
||||
|
||||
|
||||
// Eliminate identity shuffles.
|
||||
if (isLHSID) return ReplaceInstUsesWith(SVI, LHS);
|
||||
if (isRHSID) return ReplaceInstUsesWith(SVI, RHS);
|
||||
|
||||
|
||||
// If the LHS is a shufflevector itself, see if we can combine it with this
|
||||
// one without producing an unusual shuffle. Here we are really conservative:
|
||||
// we are absolutely afraid of producing a shuffle mask not in the input
|
||||
@ -520,7 +519,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
|
||||
if (ShuffleVectorInst *LHSSVI = dyn_cast<ShuffleVectorInst>(LHS)) {
|
||||
if (isa<UndefValue>(RHS)) {
|
||||
std::vector<int> LHSMask = getShuffleMask(LHSSVI);
|
||||
|
||||
|
||||
if (LHSMask.size() == Mask.size()) {
|
||||
std::vector<int> NewMask;
|
||||
bool isSplat = true;
|
||||
@ -539,7 +538,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
|
||||
}
|
||||
NewMask.push_back(MaskElt);
|
||||
}
|
||||
|
||||
|
||||
// If the result mask is equal to the src shuffle or this
|
||||
// shuffle mask, do the replacement.
|
||||
if (isSplat || NewMask == LHSMask || NewMask == Mask) {
|
||||
@ -559,7 +558,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
return MadeChange ? &SVI : 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user