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[PM/AA] Switch to an early-exit. NFC. This was split out of another
change because the diff is *useless*. I assure you, I just switched to early-return in this function. Cleanup in preparation for my next commit, as requested in code review! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242880 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2809,52 +2809,51 @@ namespace {
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if (isa<StoreInst>(I)) {
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AA->replaceWithNewValue(I, K);
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AA->replaceWithNewValue(J, K);
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} else {
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Type *IType = I->getType();
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Type *JType = J->getType();
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VectorType *VType = getVecTypeForPair(IType, JType);
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unsigned numElem = VType->getNumElements();
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unsigned numElemI = getNumScalarElements(IType);
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unsigned numElemJ = getNumScalarElements(JType);
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if (IType->isVectorTy()) {
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std::vector<Constant*> Mask1(numElemI), Mask2(numElemI);
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for (unsigned v = 0; v < numElemI; ++v) {
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Mask1[v] = ConstantInt::get(Type::getInt32Ty(Context), v);
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Mask2[v] = ConstantInt::get(Type::getInt32Ty(Context), numElemJ+v);
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}
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K1 = new ShuffleVectorInst(K, UndefValue::get(VType),
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ConstantVector::get( Mask1),
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getReplacementName(K, false, 1));
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} else {
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Value *CV0 = ConstantInt::get(Type::getInt32Ty(Context), 0);
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K1 = ExtractElementInst::Create(K, CV0,
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getReplacementName(K, false, 1));
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}
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if (JType->isVectorTy()) {
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std::vector<Constant*> Mask1(numElemJ), Mask2(numElemJ);
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for (unsigned v = 0; v < numElemJ; ++v) {
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Mask1[v] = ConstantInt::get(Type::getInt32Ty(Context), v);
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Mask2[v] = ConstantInt::get(Type::getInt32Ty(Context), numElemI+v);
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}
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K2 = new ShuffleVectorInst(K, UndefValue::get(VType),
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ConstantVector::get( Mask2),
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getReplacementName(K, false, 2));
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} else {
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Value *CV1 = ConstantInt::get(Type::getInt32Ty(Context), numElem-1);
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K2 = ExtractElementInst::Create(K, CV1,
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getReplacementName(K, false, 2));
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}
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K1->insertAfter(K);
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K2->insertAfter(K1);
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InsertionPt = K2;
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return;
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}
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Type *IType = I->getType();
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Type *JType = J->getType();
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VectorType *VType = getVecTypeForPair(IType, JType);
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unsigned numElem = VType->getNumElements();
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unsigned numElemI = getNumScalarElements(IType);
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unsigned numElemJ = getNumScalarElements(JType);
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if (IType->isVectorTy()) {
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std::vector<Constant *> Mask1(numElemI), Mask2(numElemI);
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for (unsigned v = 0; v < numElemI; ++v) {
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Mask1[v] = ConstantInt::get(Type::getInt32Ty(Context), v);
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Mask2[v] = ConstantInt::get(Type::getInt32Ty(Context), numElemJ + v);
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}
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K1 = new ShuffleVectorInst(K, UndefValue::get(VType),
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ConstantVector::get(Mask1),
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getReplacementName(K, false, 1));
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} else {
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Value *CV0 = ConstantInt::get(Type::getInt32Ty(Context), 0);
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K1 = ExtractElementInst::Create(K, CV0, getReplacementName(K, false, 1));
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}
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if (JType->isVectorTy()) {
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std::vector<Constant *> Mask1(numElemJ), Mask2(numElemJ);
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for (unsigned v = 0; v < numElemJ; ++v) {
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Mask1[v] = ConstantInt::get(Type::getInt32Ty(Context), v);
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Mask2[v] = ConstantInt::get(Type::getInt32Ty(Context), numElemI + v);
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}
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K2 = new ShuffleVectorInst(K, UndefValue::get(VType),
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ConstantVector::get(Mask2),
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getReplacementName(K, false, 2));
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} else {
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Value *CV1 = ConstantInt::get(Type::getInt32Ty(Context), numElem - 1);
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K2 = ExtractElementInst::Create(K, CV1, getReplacementName(K, false, 2));
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}
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K1->insertAfter(K);
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K2->insertAfter(K1);
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InsertionPt = K2;
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}
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// Move all uses of the function I (including pairing-induced uses) after J.
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