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Added MemIntrinsicNode which is useful to represent target intrinsics that

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touches memory and need an associated MemOperand


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57712 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang
2008-10-17 18:22:58 +00:00
parent 8c1a6ca22a
commit c4d1021ead
3 changed files with 121 additions and 8 deletions
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61
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@@ -3334,6 +3334,46 @@ SDValue SelectionDAG::getMergeValues(const SDValue *Ops, unsigned NumOps,
return getNode(ISD::MERGE_VALUES, getVTList(&VTs[0], NumOps), Ops, NumOps);
}
SDValue
SelectionDAG::getMemIntrinsicNode(unsigned Opcode,
const MVT *VTs, unsigned NumVTs,
const SDValue *Ops, unsigned NumOps,
MVT MemVT, const Value *srcValue, int SVOff,
unsigned Align, bool Vol,
bool ReadMem, bool WriteMem) {
return getMemIntrinsicNode(Opcode, makeVTList(VTs, NumVTs), Ops, NumOps,
MemVT, srcValue, SVOff, Align, Vol,
ReadMem, WriteMem);
}
SDValue
SelectionDAG::getMemIntrinsicNode(unsigned Opcode, SDVTList VTList,
const SDValue *Ops, unsigned NumOps,
MVT MemVT, const Value *srcValue, int SVOff,
unsigned Align, bool Vol,
bool ReadMem, bool WriteMem) {
// Memoize the node unless it returns a flag.
MemIntrinsicSDNode *N;
if (VTList.VTs[VTList.NumVTs-1] != MVT::Flag) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTList, Ops, NumOps);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
N = NodeAllocator.Allocate<MemIntrinsicSDNode>();
new (N) MemIntrinsicSDNode(Opcode, VTList, Ops, NumOps, MemVT,
srcValue, SVOff, Align, Vol, ReadMem, WriteMem);
CSEMap.InsertNode(N, IP);
} else {
N = NodeAllocator.Allocate<MemIntrinsicSDNode>();
new (N) MemIntrinsicSDNode(Opcode, VTList, Ops, NumOps, MemVT,
srcValue, SVOff, Align, Vol, ReadMem, WriteMem);
}
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue
SelectionDAG::getCall(unsigned CallingConv, bool IsVarArgs, bool IsTailCall,
bool IsInreg, SDVTList VTs,
@@ -4678,6 +4718,7 @@ void MemSDNode::ANCHOR() {}
void LoadSDNode::ANCHOR() {}
void StoreSDNode::ANCHOR() {}
void AtomicSDNode::ANCHOR() {}
void MemIntrinsicSDNode::ANCHOR() {}
void CallSDNode::ANCHOR() {}
HandleSDNode::~HandleSDNode() {
@@ -4707,6 +4748,17 @@ MemSDNode::MemSDNode(unsigned Opc, SDVTList VTs, MVT memvt,
assert(isVolatile() == vol && "Volatile representation error!");
}
MemSDNode::MemSDNode(unsigned Opc, SDVTList VTs, const SDValue *Ops,
unsigned NumOps, MVT memvt, const Value *srcValue,
int SVO, unsigned alignment, bool vol)
: SDNode(Opc, VTs, Ops, NumOps),
MemoryVT(memvt), SrcValue(srcValue), SVOffset(SVO),
Flags(vol | ((Log2_32(alignment) + 1) << 1)) {
assert(isPowerOf2_32(alignment) && "Alignment is not a power of 2!");
assert(getAlignment() == alignment && "Alignment representation error!");
assert(isVolatile() == vol && "Volatile representation error!");
}
/// getMemOperand - Return a MachineMemOperand object describing the memory
/// reference performed by this memory reference.
MachineMemOperand MemSDNode::getMemOperand() const {
@@ -4715,10 +4767,15 @@ MachineMemOperand MemSDNode::getMemOperand() const {
Flags = MachineMemOperand::MOLoad;
else if (isa<StoreSDNode>(this))
Flags = MachineMemOperand::MOStore;
else {
assert(isa<AtomicSDNode>(this) && "Unknown MemSDNode opcode!");
else if (isa<AtomicSDNode>(this)) {
Flags = MachineMemOperand::MOLoad | MachineMemOperand::MOStore;
}
else {
const MemIntrinsicSDNode* MemIntrinNode = dyn_cast<MemIntrinsicSDNode>(this);
assert(MemIntrinNode && "Unknown MemSDNode opcode!");
if (MemIntrinNode->readMem()) Flags |= MachineMemOperand::MOLoad;
if (MemIntrinNode->writeMem()) Flags |= MachineMemOperand::MOStore;
}
int Size = (getMemoryVT().getSizeInBits() + 7) >> 3;
if (isVolatile()) Flags |= MachineMemOperand::MOVolatile;