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Remove redundant test for vector-nature. Scan the vector first to see whether
our optz'n will apply to it, then build the replacement vector only if needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61279 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -3090,11 +3090,17 @@ Instruction *InstCombiner::visitSRem(BinaryOperator &I) {
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}
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// If it's a constant vector, flip any negative values positive.
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if (isa<VectorType>(I.getType())) {
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if (ConstantVector *RHSV = dyn_cast<ConstantVector>(Op1)) {
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unsigned VWidth = RHSV->getNumOperands();
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std::vector<Constant *> Elts(VWidth);
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if (ConstantVector *RHSV = dyn_cast<ConstantVector>(Op1)) {
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unsigned VWidth = RHSV->getNumOperands();
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bool hasNegative = false;
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for (unsigned i = 0; !hasNegative && i != VWidth; ++i)
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if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i)))
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if (RHS->getValue().isNegative())
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hasNegative = true;
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if (hasNegative) {
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std::vector<Constant *> Elts(VWidth);
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for (unsigned i = 0; i != VWidth; ++i) {
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if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i))) {
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if (RHS->getValue().isNegative())
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