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Add constant folding wrapper support for select instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12319 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -79,6 +79,10 @@ Constant *llvm::ConstantFoldInstruction(Instruction *I) {
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default: return 0;
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case Instruction::Cast:
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return ConstantExpr::getCast(Op0, I->getType());
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case Instruction::Select:
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if (Constant *Op2 = dyn_cast<Constant>(I->getOperand(2)))
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return ConstantExpr::getSelect(Op0, Op1, Op2);
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return 0;
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case Instruction::GetElementPtr:
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std::vector<Constant*> IdxList;
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IdxList.reserve(I->getNumOperands()-1);
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