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There should be no extending loads or truncating

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stores of one-element vectors.  Also, neaten the
handling of INSERT_VECTOR_ELT when the inserted
type is larger than the vector element type.

llvm-svn: 53554
This commit is contained in:
Duncan Sands 2008-07-14 17:22:31 +00:00
parent a9d2c2042e
commit fd63c72205
1 changed files with 4 additions and 4 deletions
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8
lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
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@ -85,7 +85,7 @@ SDOperand DAGTypeLegalizer::ScalarizeVecRes_UNDEF(SDNode *N) {
}
SDOperand DAGTypeLegalizer::ScalarizeVecRes_LOAD(LoadSDNode *N) {
assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
assert(ISD::isNormalLoad(N) && "Extending load of one-element vector?");
SDOperand Result = DAG.getLoad(N->getValueType(0).getVectorElementType(),
N->getChain(), N->getBasePtr(),
N->getSrcValue(), N->getSrcValueOffset(),
@ -118,9 +118,9 @@ SDOperand DAGTypeLegalizer::ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N) {
// so be sure to truncate it to the element type if necessary.
SDOperand Op = N->getOperand(1);
MVT EltVT = N->getValueType(0).getVectorElementType();
if (Op.getValueType().bitsGT(EltVT))
if (Op.getValueType() != EltVT)
// FIXME: Can this happen for floating point types?
Op = DAG.getNode(ISD::TRUNCATE, EltVT, Op);
assert(Op.getValueType() == EltVT && "Invalid type for inserted value!");
return Op;
}
@ -210,7 +210,7 @@ SDOperand DAGTypeLegalizer::ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N) {
/// ScalarizeVecOp_STORE - If the value to store is a vector that needs to be
/// scalarized, it must be <1 x ty>. Just store the element.
SDOperand DAGTypeLegalizer::ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo){
assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
assert(ISD::isNormalStore(N) && "Truncating store of one-element vector?");
assert(OpNo == 1 && "Do not know how to scalarize this operand!");
return DAG.getStore(N->getChain(), GetScalarizedVector(N->getOperand(1)),
N->getBasePtr(), N->getSrcValue(), N->getSrcValueOffset(),