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Return Expand from getOperationAction for all extended

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types.  This is needed for SIGN_EXTEND_INREG at least.
It is not clear if this is correct for other operations.
On the other hand, for the various load/store actions
it seems to correct to return the type action, as is
currently done.
Also, it seems that SelectionDAG::getValueType can be
called for extended value types; introduce a map for
holding these, since we don't really want to extend
the vector to be 2^32 pointers long!
Generalize DAGTypeLegalizer::PromoteResult_TRUNCATE
and DAGTypeLegalizer::PromoteResult_INT_EXTEND to handle
the various funky possibilities that apints introduce,
for example that you can promote to a type that needs
to be expanded.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43071 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2007-10-17 13:49:58 +00:00
parent afc407ea51
commit f411b83c8c
5 changed files with 60 additions and 46 deletions
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27
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@@ -527,10 +527,16 @@ void SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
Erased =
TargetExternalSymbols.erase(cast<ExternalSymbolSDNode>(N)->getSymbol());
break;
case ISD::VALUETYPE:
Erased = ValueTypeNodes[cast<VTSDNode>(N)->getVT()] != 0;
ValueTypeNodes[cast<VTSDNode>(N)->getVT()] = 0;
case ISD::VALUETYPE: {
MVT::ValueType VT = cast<VTSDNode>(N)->getVT();
if (MVT::isExtendedVT(VT)) {
Erased = ExtendedValueTypeNodes.erase(VT);
} else {
Erased = ValueTypeNodes[VT] != 0;
ValueTypeNodes[VT] = 0;
}
break;
}
default:
// Remove it from the CSE Map.
Erased = CSEMap.RemoveNode(N);
@@ -847,15 +853,16 @@ SDOperand SelectionDAG::getBasicBlock(MachineBasicBlock *MBB) {
}
SDOperand SelectionDAG::getValueType(MVT::ValueType VT) {
assert(!MVT::isExtendedVT(VT) && "Expecting a simple value type!");
if ((unsigned)VT >= ValueTypeNodes.size())
if (!MVT::isExtendedVT(VT) && (unsigned)VT >= ValueTypeNodes.size())
ValueTypeNodes.resize(VT+1);
if (ValueTypeNodes[VT] == 0) {
ValueTypeNodes[VT] = new VTSDNode(VT);
AllNodes.push_back(ValueTypeNodes[VT]);
}
return SDOperand(ValueTypeNodes[VT], 0);
SDNode *&N = MVT::isExtendedVT(VT) ?
ExtendedValueTypeNodes[VT] : ValueTypeNodes[VT];
if (N) return SDOperand(N, 0);
N = new VTSDNode(VT);
AllNodes.push_back(N);
return SDOperand(N, 0);
}
SDOperand SelectionDAG::getExternalSymbol(const char *Sym, MVT::ValueType VT) {