#include "llvm/ADT/GraphTraits.h"
#include "llvm/ADT/iterator"
#include "llvm/ADT/APFloat.h"
+#include "llvm/ADT/APInt.h"
#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/CodeGen/MemOperand.h"
#include "llvm/Support/DataTypes.h"
#include <cassert>
BUILD_VECTOR,
/// INSERT_VECTOR_ELT(VECTOR, VAL, IDX) - Returns VECTOR with the element
- /// at IDX replaced with VAL.
+ /// at IDX replaced with VAL. If the type of VAL is larger than the vector
+ /// element type then VAL is truncated before replacement.
INSERT_VECTOR_ELT,
/// EXTRACT_VECTOR_ELT(VECTOR, IDX) - Returns a single element from VECTOR
/// vector value) starting with the (potentially variable) element number
/// IDX, which must be a multiple of the result vector length.
EXTRACT_SUBVECTOR,
-
+
/// VECTOR_SHUFFLE(VEC1, VEC2, SHUFFLEVEC) - Returns a vector, of the same
/// type as VEC1/VEC2. SHUFFLEVEC is a BUILD_VECTOR of constant int values
- /// (regardless of whether its datatype is legal or not) that indicate
- /// which value each result element will get. The elements of VEC1/VEC2 are
- /// enumerated in order. This is quite similar to the Altivec 'vperm'
- /// instruction, except that the indices must be constants and are in terms
- /// of the element size of VEC1/VEC2, not in terms of bytes.
+ /// (maybe of an illegal datatype) or undef that indicate which value each
+ /// result element will get. The elements of VEC1/VEC2 are enumerated in
+ /// order. This is quite similar to the Altivec 'vperm' instruction, except
+ /// that the indices must be constants and are in terms of the element size
+ /// of VEC1/VEC2, not in terms of bytes.
VECTOR_SHUFFLE,
-
+
/// SCALAR_TO_VECTOR(VAL) - This represents the operation of loading a
/// scalar value into element 0 of the resultant vector type. The top
/// elements 1 to N-1 of the N-element vector are undefined.
// is added / subtracted from the base pointer to form the address (for
// indexed memory ops).
LOAD, STORE,
-
+
// DYNAMIC_STACKALLOC - Allocate some number of bytes on the stack aligned
// to a specified boundary. This node always has two return values: a new
// stack pointer value and a chain. The first operand is the token chain,
// a call sequence, and carry arbitrary information that target might want
// to know. The first operand is a chain, the rest are specified by the
// target and not touched by the DAG optimizers.
+ // CALLSEQ_START..CALLSEQ_END pairs may not be nested.
CALLSEQ_START, // Beginning of a call sequence
CALLSEQ_END, // End of a call sequence
// pointer, and a SRCVALUE.
VAEND, VASTART,
- // SRCVALUE - This corresponds to a Value*, and is used to associate memory
- // locations with their value. This allows one use alias analysis
- // information in the backend.
+ // SRCVALUE - This is a node type that holds a Value* that is used to
+ // make reference to a value in the LLVM IR.
SRCVALUE,
+ // MEMOPERAND - This is a node that contains a MemOperand which records
+ // information about a memory reference. This is used to make AliasAnalysis
+ // queries from the backend.
+ MEMOPERAND,
+
// PCMARKER - This corresponds to the pcmarker intrinsic.
PCMARKER,
// TRAP - Trapping instruction
TRAP,
+ // PREFETCH - This corresponds to a prefetch intrinsic. It takes chains are
+ // their first operand. The other operands are the address to prefetch,
+ // read / write specifier, and locality specifier.
+ PREFETCH,
+
+ // OUTCHAIN = MEMBARRIER(INCHAIN, load-load, load-store, store-load,
+ // store-store, device)
+ // This corresponds to the memory.barrier intrinsic.
+ // it takes an input chain, 4 operands to specify the type of barrier, an
+ // operand specifying if the barrier applies to device and uncached memory
+ // and produces an output chain.
+ MEMBARRIER,
+
+ // Val, OUTCHAIN = ATOMIC_LCS(INCHAIN, ptr, cmp, swap)
+ // this corresponds to the atomic.lcs intrinsic.
+ // cmp is compared to *ptr, and if equal, swap is stored in *ptr.
+ // the return is always the original value in *ptr
+ ATOMIC_LCS,
+
+ // Val, OUTCHAIN = ATOMIC_LAS(INCHAIN, ptr, amt)
+ // this corresponds to the atomic.las intrinsic.
+ // *ptr + amt is stored to *ptr atomically.
+ // the return is always the original value in *ptr
+ ATOMIC_LAS,
+
+ // Val, OUTCHAIN = ATOMIC_SWAP(INCHAIN, ptr, amt)
+ // this corresponds to the atomic.swap intrinsic.
+ // amt is stored to *ptr atomically.
+ // the return is always the original value in *ptr
+ ATOMIC_SWAP,
+
// BUILTIN_OP_END - This must be the last enum value in this list.
BUILTIN_OP_END
};
/// BUILD_VECTOR where all of the elements are 0 or undef.
bool isBuildVectorAllZeros(const SDNode *N);
+ /// isScalarToVector - Return true if the specified node is a
+ /// ISD::SCALAR_TO_VECTOR node or a BUILD_VECTOR node where only the low
+ /// element is not an undef.
+ bool isScalarToVector(const SDNode *N);
+
/// isDebugLabel - Return true if the specified node represents a debug
- /// label (i.e. ISD::LABEL or TargetInstrInfo::LANEL node and third operand
+ /// label (i.e. ISD::LABEL or TargetInstrInfo::LABEL node and third operand
/// is 0).
bool isDebugLabel(const SDNode *N);
return SDOperand(Val, R);
}
- // isOperand - Return true if this node is an operand of N.
- bool isOperand(SDNode *N) const;
+ // isOperandOf - Return true if this node is an operand of N.
+ bool isOperandOf(SDNode *N) const;
/// getValueType - Return the ValueType of the referenced return value.
///
inline MVT::ValueType getValueType() const;
+ /// getValueSizeInBits - Returns MVT::getSizeInBits(getValueType()).
+ ///
+ unsigned getValueSizeInBits() const {
+ return MVT::getSizeInBits(getValueType());
+ }
+
// Forwarding methods - These forward to the corresponding methods in SDNode.
inline unsigned getOpcode() const;
inline unsigned getNumOperands() const;
static inline SDOperand getEmptyKey() { return SDOperand((SDNode*)-1, -1U); }
static inline SDOperand getTombstoneKey() { return SDOperand((SDNode*)-1, 0);}
static unsigned getHashValue(const SDOperand &Val) {
- return (unsigned)((uintptr_t)Val.Val >> 4) ^
- (unsigned)((uintptr_t)Val.Val >> 9) + Val.ResNo;
+ return ((unsigned)((uintptr_t)Val.Val >> 4) ^
+ (unsigned)((uintptr_t)Val.Val >> 9)) + Val.ResNo;
}
static bool isEqual(const SDOperand &LHS, const SDOperand &RHS) {
return LHS == RHS;
/// value. This method ignores uses of other values defined by this operation.
bool hasAnyUseOfValue(unsigned Value) const;
- /// isOnlyUse - Return true if this node is the only use of N.
+ /// isOnlyUseOf - Return true if this node is the only use of N.
///
- bool isOnlyUse(SDNode *N) const;
+ bool isOnlyUseOf(SDNode *N) const;
- /// isOperand - Return true if this node is an operand of N.
+ /// isOperandOf - Return true if this node is an operand of N.
///
- bool isOperand(SDNode *N) const;
+ bool isOperandOf(SDNode *N) const;
- /// isPredecessor - Return true if this node is a predecessor of N. This node
- /// is either an operand of N or it can be reached by recursively traversing
- /// up the operands.
+ /// isPredecessorOf - Return true if this node is a predecessor of N. This
+ /// node is either an operand of N or it can be reached by recursively
+ /// traversing up the operands.
/// NOTE: this is an expensive method. Use it carefully.
- bool isPredecessor(SDNode *N) const;
+ bool isPredecessorOf(SDNode *N) const;
/// getNumOperands - Return the number of values used by this operation.
///
return ValueList[ResNo];
}
+ /// getValueSizeInBits - Returns MVT::getSizeInBits(getValueType(ResNo)).
+ ///
+ unsigned getValueSizeInBits(unsigned ResNo) const {
+ return MVT::getSizeInBits(getValueType(ResNo));
+ }
+
typedef const MVT::ValueType* value_iterator;
value_iterator value_begin() const { return ValueList; }
value_iterator value_end() const { return ValueList+NumValues; }
/// getValueTypeList - Return a pointer to the specified value type.
///
- static MVT::ValueType *getValueTypeList(MVT::ValueType VT);
+ static const MVT::ValueType *getValueTypeList(MVT::ValueType VT);
static SDVTList getSDVTList(MVT::ValueType VT) {
SDVTList Ret = { getValueTypeList(VT), 1 };
return Ret;
SDOperand getValue() const { return Op; }
};
+class AtomicSDNode : public SDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+ SDOperand Ops[4];
+ MVT::ValueType OrigVT;
+public:
+ AtomicSDNode(unsigned Opc, SDVTList VTL, SDOperand Chain, SDOperand Ptr,
+ SDOperand Cmp, SDOperand Swp, MVT::ValueType VT)
+ : SDNode(Opc, VTL) {
+ Ops[0] = Chain;
+ Ops[1] = Ptr;
+ Ops[2] = Swp;
+ Ops[3] = Cmp;
+ InitOperands(Ops, 4);
+ OrigVT=VT;
+ }
+ AtomicSDNode(unsigned Opc, SDVTList VTL, SDOperand Chain, SDOperand Ptr,
+ SDOperand Val, MVT::ValueType VT)
+ : SDNode(Opc, VTL) {
+ Ops[0] = Chain;
+ Ops[1] = Ptr;
+ Ops[2] = Val;
+ InitOperands(Ops, 3);
+ OrigVT=VT;
+ }
+ MVT::ValueType getVT() const { return OrigVT; }
+ bool isCompareAndSwap() const { return getOpcode() == ISD::ATOMIC_LCS; }
+};
+
class StringSDNode : public SDNode {
std::string Value;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
};
class ConstantSDNode : public SDNode {
- uint64_t Value;
+ APInt Value;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- ConstantSDNode(bool isTarget, uint64_t val, MVT::ValueType VT)
+ ConstantSDNode(bool isTarget, const APInt &val, MVT::ValueType VT)
: SDNode(isTarget ? ISD::TargetConstant : ISD::Constant, getSDVTList(VT)),
Value(val) {
}
public:
- uint64_t getValue() const { return Value; }
+ const APInt &getAPIntValue() const { return Value; }
+ uint64_t getValue() const { return Value.getZExtValue(); }
int64_t getSignExtended() const {
unsigned Bits = MVT::getSizeInBits(getValueType(0));
- return ((int64_t)Value << (64-Bits)) >> (64-Bits);
+ return ((int64_t)Value.getZExtValue() << (64-Bits)) >> (64-Bits);
}
bool isNullValue() const { return Value == 0; }
class ConstantFPSDNode : public SDNode {
APFloat Value;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- // Longterm plan: replace all uses of getValue with getValueAPF, remove
- // getValue, rename getValueAPF to getValue.
protected:
friend class SelectionDAG;
ConstantFPSDNode(bool isTarget, const APFloat& val, MVT::ValueType VT)
}
public:
- int getIndex() const { return JTI; }
+ int getIndex() const { return JTI; }
static bool classof(const JumpTableSDNode *) { return true; }
static bool classof(const SDNode *N) {
}
};
+/// SrcValueSDNode - An SDNode that holds an arbitrary LLVM IR Value. This is
+/// used when the SelectionDAG needs to make a simple reference to something
+/// in the LLVM IR representation.
+///
+/// Note that this is not used for carrying alias information; that is done
+/// with MemOperandSDNode, which includes a Value which is required to be a
+/// pointer, and several other fields specific to memory references.
+///
class SrcValueSDNode : public SDNode {
const Value *V;
- int offset;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- SrcValueSDNode(const Value* v, int o)
- : SDNode(ISD::SRCVALUE, getSDVTList(MVT::Other)), V(v), offset(o) {
- }
+ /// Create a SrcValue for a general value.
+ explicit SrcValueSDNode(const Value *v)
+ : SDNode(ISD::SRCVALUE, getSDVTList(MVT::Other)), V(v) {}
public:
+ /// getValue - return the contained Value.
const Value *getValue() const { return V; }
- int getOffset() const { return offset; }
static bool classof(const SrcValueSDNode *) { return true; }
static bool classof(const SDNode *N) {
};
+/// MemOperandSDNode - An SDNode that holds a MemOperand. This is
+/// used to represent a reference to memory after ISD::LOAD
+/// and ISD::STORE have been lowered.
+///
+class MemOperandSDNode : public SDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+protected:
+ friend class SelectionDAG;
+ /// Create a MemOperand node
+ explicit MemOperandSDNode(const MemOperand &mo)
+ : SDNode(ISD::MEMOPERAND, getSDVTList(MVT::Other)), MO(mo) {}
+
+public:
+ /// MO - The contained MemOperand.
+ const MemOperand MO;
+
+ static bool classof(const MemOperandSDNode *) { return true; }
+ static bool classof(const SDNode *N) {
+ return N->getOpcode() == ISD::MEMOPERAND;
+ }
+};
+
+
class RegisterSDNode : public SDNode {
unsigned Reg;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
const Value *SV, int SVO, unsigned Align, bool Vol)
: SDNode(NodeTy, VTs),
AddrMode(AM), MemoryVT(VT),
- SrcValue(SV), SVOffset(SVO), Alignment(Align), IsVolatile(Vol)
- {
+ SrcValue(SV), SVOffset(SVO), Alignment(Align), IsVolatile(Vol) {
for (unsigned i = 0; i != NumOperands; ++i)
Ops[i] = Operands[i];
InitOperands(Ops, NumOperands);
"Only indexed loads and stores have a non-undef offset operand");
}
- const SDOperand getChain() const {
- return getOperand(0);
- }
- const SDOperand getBasePtr() const {
+ const SDOperand &getChain() const { return getOperand(0); }
+ const SDOperand &getBasePtr() const {
return getOperand(getOpcode() == ISD::LOAD ? 1 : 2);
}
- const SDOperand getOffset() const {
+ const SDOperand &getOffset() const {
return getOperand(getOpcode() == ISD::LOAD ? 2 : 3);
}
- const SDOperand getValue() const {
- assert(getOpcode() == ISD::STORE);
- return getOperand(1);
- }
const Value *getSrcValue() const { return SrcValue; }
int getSrcValueOffset() const { return SVOffset; }
/// isUnindexed - Return true if this is NOT a pre/post inc/dec load/store.
bool isUnindexed() const { return AddrMode == ISD::UNINDEXED; }
+ /// getMemOperand - Return a MemOperand object describing the memory
+ /// reference performed by this load or store.
+ MemOperand getMemOperand() const;
+
static bool classof(const LSBaseSDNode *N) { return true; }
static bool classof(const SDNode *N) {
return N->getOpcode() == ISD::LOAD ||
const Value *SV, int O=0, unsigned Align=0, bool Vol=false)
: LSBaseSDNode(ISD::LOAD, ChainPtrOff, 3,
VTs, AM, LVT, SV, O, Align, Vol),
- ExtType(ETy) { }
+ ExtType(ETy) {}
public:
ISD::LoadExtType getExtensionType() const { return ExtType; }
+ const SDOperand &getBasePtr() const { return getOperand(1); }
+ const SDOperand &getOffset() const { return getOperand(2); }
static bool classof(const LoadSDNode *) { return true; }
static bool classof(const SDNode *N) {
const Value *SV, int O=0, unsigned Align=0, bool Vol=false)
: LSBaseSDNode(ISD::STORE, ChainValuePtrOff, 4,
VTs, AM, SVT, SV, O, Align, Vol),
- IsTruncStore(isTrunc) { }
+ IsTruncStore(isTrunc) {}
public:
bool isTruncatingStore() const { return IsTruncStore; }
+ const SDOperand &getValue() const { return getOperand(1); }
+ const SDOperand &getBasePtr() const { return getOperand(2); }
+ const SDOperand &getOffset() const { return getOperand(3); }
static bool classof(const StoreSDNode *) { return true; }
static bool classof(const SDNode *N) {
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