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When folding constant expr gep's, don't force the use of long indices.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14658 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -993,11 +993,14 @@ Constant *llvm::ConstantFoldGetElementPtr(const Constant *C,
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// Add the last index of the source with the first index of the new GEP.
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// Make sure to handle the case when they are actually different types.
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Constant *Combined = CE->getOperand(CE->getNumOperands()-1);
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if (!IdxList[0]->isNullValue()) // Otherwise it must be an array
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if (!IdxList[0]->isNullValue()) { // Otherwise it must be an array
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const Type *IdxTy = Combined->getType();
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if (IdxTy != IdxList[0]->getType()) IdxTy = Type::LongTy;
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Combined =
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ConstantExpr::get(Instruction::Add,
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ConstantExpr::getCast(IdxList[0], Type::LongTy),
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ConstantExpr::getCast(Combined, Type::LongTy));
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ConstantExpr::getCast(IdxList[0], IdxTy),
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ConstantExpr::getCast(Combined, IdxTy));
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}
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NewIndices.push_back(Combined);
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NewIndices.insert(NewIndices.end(), IdxList.begin()+1, IdxList.end());
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