#define LLVM_CODEGEN_SELECTIONDAGNODES_H
#include "llvm/ADT/iterator_range.h"
+#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/GraphTraits.h"
#include "llvm/ADT/STLExtras.h"
/// of information is represented with the SDValue value type.
///
class SDValue {
+ friend struct DenseMapInfo<SDValue>;
+
SDNode *Node; // The node defining the value we are using.
unsigned ResNo; // Which return value of the node we are using.
public:
SDValue() : Node(nullptr), ResNo(0) {}
- SDValue(SDNode *node, unsigned resno) : Node(node), ResNo(resno) {}
+ SDValue(SDNode *node, unsigned resno);
/// get the index which selects a specific result in the SDNode
unsigned getResNo() const { return ResNo; }
bool operator<(const SDValue &O) const {
return std::tie(Node, ResNo) < std::tie(O.Node, O.ResNo);
}
+ LLVM_EXPLICIT operator bool() const {
+ return Node != nullptr;
+ }
SDValue getValue(unsigned R) const {
return SDValue(Node, R);
template<> struct DenseMapInfo<SDValue> {
static inline SDValue getEmptyKey() {
- return SDValue((SDNode*)-1, -1U);
+ SDValue V;
+ V.ResNo = -1U;
+ return V;
}
static inline SDValue getTombstoneKey() {
- return SDValue((SDNode*)-1, 0);
+ SDValue V;
+ V.ResNo = -2U;
+ return V;
}
static unsigned getHashValue(const SDValue &Val) {
return ((unsigned)((uintptr_t)Val.getNode() >> 4) ^
return NodeType >= ISD::FIRST_TARGET_MEMORY_OPCODE;
}
+ /// Test if this node is a memory intrinsic (with valid pointer information).
+ /// INTRINSIC_W_CHAIN and INTRINSIC_VOID nodes are sometimes created for
+ /// non-memory intrinsics (with chains) that are not really instances of
+ /// MemSDNode. For such nodes, we need some extra state to determine the
+ /// proper classof relationship.
+ bool isMemIntrinsic() const {
+ return (NodeType == ISD::INTRINSIC_W_CHAIN ||
+ NodeType == ISD::INTRINSIC_VOID) && ((SubclassData >> 13) & 1);
+ }
+
/// isMachineOpcode - Test if this node has a post-isel opcode, directly
/// corresponding to a MachineInstr opcode.
bool isMachineOpcode() const { return NodeType < 0; }
/// changes.
/// NOTE: This is still very expensive. Use carefully.
bool hasPredecessorHelper(const SDNode *N,
- SmallPtrSet<const SDNode *, 32> &Visited,
+ SmallPtrSetImpl<const SDNode *> &Visited,
SmallVectorImpl<const SDNode *> &Worklist) const;
/// getNumOperands - Return the number of values used by this operation.
typedef SDUse* op_iterator;
op_iterator op_begin() const { return OperandList; }
op_iterator op_end() const { return OperandList+NumOperands; }
+ ArrayRef<SDUse> ops() const { return makeArrayRef(op_begin(), op_end()); }
SDVTList getVTList() const {
SDVTList X = { ValueList, NumValues };
// Define inline functions from the SDValue class.
+inline SDValue::SDValue(SDNode *node, unsigned resno)
+ : Node(node), ResNo(resno) {
+ assert((!Node || ResNo < Node->getNumValues()) &&
+ "Invalid result number for the given node!");
+ assert(ResNo < -2U && "Cannot use result numbers reserved for DenseMaps.");
+}
+
inline unsigned SDValue::getOpcode() const {
return Node->getOpcode();
}
// Returns the offset from the location of the access.
int64_t getSrcValueOffset() const { return MMO->getOffset(); }
- /// Returns the TBAAInfo that describes the dereference.
- const MDNode *getTBAAInfo() const { return MMO->getTBAAInfo(); }
+ /// Returns the AA info that describes the dereference.
+ AAMDNodes getAAInfo() const { return MMO->getAAInfo(); }
/// Returns the Ranges that describes the dereference.
const MDNode *getRanges() const { return MMO->getRanges(); }
N->getOpcode() == ISD::STORE ||
N->getOpcode() == ISD::PREFETCH ||
N->getOpcode() == ISD::ATOMIC_CMP_SWAP ||
+ N->getOpcode() == ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS ||
N->getOpcode() == ISD::ATOMIC_SWAP ||
N->getOpcode() == ISD::ATOMIC_LOAD_ADD ||
N->getOpcode() == ISD::ATOMIC_LOAD_SUB ||
N->getOpcode() == ISD::ATOMIC_LOAD_UMAX ||
N->getOpcode() == ISD::ATOMIC_LOAD ||
N->getOpcode() == ISD::ATOMIC_STORE ||
+ N->isMemIntrinsic() ||
N->isTargetMemoryOpcode();
}
};
bool isCompareAndSwap() const {
unsigned Op = getOpcode();
- return Op == ISD::ATOMIC_CMP_SWAP;
+ return Op == ISD::ATOMIC_CMP_SWAP || Op == ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS;
}
// Methods to support isa and dyn_cast
static bool classof(const SDNode *N) {
return N->getOpcode() == ISD::ATOMIC_CMP_SWAP ||
+ N->getOpcode() == ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS ||
N->getOpcode() == ISD::ATOMIC_SWAP ||
N->getOpcode() == ISD::ATOMIC_LOAD_ADD ||
N->getOpcode() == ISD::ATOMIC_LOAD_SUB ||
ArrayRef<SDValue> Ops, EVT MemoryVT,
MachineMemOperand *MMO)
: MemSDNode(Opc, Order, dl, VTs, Ops, MemoryVT, MMO) {
+ SubclassData |= 1u << 13;
}
// Methods to support isa and dyn_cast
static bool classof(const SDNode *N) {
// We lower some target intrinsics to their target opcode
// early a node with a target opcode can be of this class
- return N->getOpcode() == ISD::INTRINSIC_W_CHAIN ||
- N->getOpcode() == ISD::INTRINSIC_VOID ||
+ return N->isMemIntrinsic() ||
N->getOpcode() == ISD::PREFETCH ||
N->isTargetMemoryOpcode();
}
unsigned MinSplatBits = 0,
bool isBigEndian = false) const;
- /// getConstantSplatValue - Check if this is a constant splat, and if so,
- /// return the splat value only if it is a ConstantSDNode. Otherwise
- /// return nullptr. This is a simpler form of isConstantSplat.
- /// Get the constant splat only if you care about the splat value.
- ConstantSDNode *getConstantSplatValue() const;
+ /// \brief Returns the splatted value or a null value if this is not a splat.
+ ///
+ /// If passed a non-null UndefElements bitvector, it will resize it to match
+ /// the vector width and set the bits where elements are undef.
+ SDValue getSplatValue(BitVector *UndefElements = nullptr) const;
+
+ /// \brief Returns the splatted constant or null if this is not a constant
+ /// splat.
+ ///
+ /// If passed a non-null UndefElements bitvector, it will resize it to match
+ /// the vector width and set the bits where elements are undef.
+ ConstantSDNode *
+ getConstantSplatNode(BitVector *UndefElements = nullptr) const;
+
+ /// \brief Returns the splatted constant FP or null if this is not a constant
+ /// FP splat.
+ ///
+ /// If passed a non-null UndefElements bitvector, it will resize it to match
+ /// the vector width and set the bits where elements are undef.
+ ConstantFPSDNode *
+ getConstantFPSplatNode(BitVector *UndefElements = nullptr) const;
bool isConstant() const;
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