//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Value.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/GraphTraits.h"
-#include "llvm/ADT/iterator"
+#include "llvm/ADT/iterator.h"
#include "llvm/ADT/APFloat.h"
+#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/alist.h"
#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/RecyclingAllocator.h"
#include "llvm/Support/DataTypes.h"
#include <cassert>
class MachineBasicBlock;
class MachineConstantPoolValue;
class SDNode;
+class CompileUnitDesc;
template <typename T> struct DenseMapInfo;
template <typename T> struct simplify_type;
-template <typename T> struct ilist_traits;
-template<typename NodeTy, typename Traits> class iplist;
-template<typename NodeTy> class ilist_iterator;
/// SDVTList - This represents a list of ValueType's that has been intern'd by
/// a SelectionDAG. Instances of this simple value class are returned by
/// SelectionDAG::getVTList(...).
///
struct SDVTList {
- const MVT::ValueType *VTs;
+ const MVT *VTs;
unsigned short NumVTs;
};
/// SelectionDAG node types and value types.
///
namespace ISD {
- namespace ParamFlags {
- enum Flags {
- NoFlagSet = 0,
- ZExt = 1<<0, ///< Parameter should be zero extended
- ZExtOffs = 0,
- SExt = 1<<1, ///< Parameter should be sign extended
- SExtOffs = 1,
- InReg = 1<<2, ///< Parameter should be passed in register
- InRegOffs = 2,
- StructReturn = 1<<3, ///< Hidden struct-return pointer
- StructReturnOffs = 3,
- ByVal = 1<<4, ///< Struct passed by value
- ByValOffs = 4,
- Nest = 1<<5, ///< Parameter is nested function static chain
- NestOffs = 5,
- ByValAlign = 0xF << 6, //< The alignment of the struct
- ByValAlignOffs = 6,
- ByValSize = 0x1ffff << 10, //< The size of the struct
- ByValSizeOffs = 10,
- OrigAlignment = 0x1F<<27,
- OrigAlignmentOffs = 27
- };
- }
//===--------------------------------------------------------------------===//
/// ISD::NodeType enum - This enum defines all of the operators valid in a
AssertSext, AssertZext,
// Various leaf nodes.
- STRING, BasicBlock, VALUETYPE, CONDCODE, Register,
+ BasicBlock, VALUETYPE, ARG_FLAGS, CONDCODE, Register,
Constant, ConstantFP,
GlobalAddress, GlobalTLSAddress, FrameIndex,
JumpTable, ConstantPool, ExternalSymbol,
// CopyFromReg - This node indicates that the input value is a virtual or
// physical register that is defined outside of the scope of this
- // SelectionDAG. The register is available from the RegSDNode object.
+ // SelectionDAG. The register is available from the RegisterSDNode object.
CopyFromReg,
// UNDEF - An undefined node
/// alignment '1' in other argument pieces.
CALL,
- // EXTRACT_ELEMENT - This is used to get the first or second (determined by
- // a Constant, which is required to be operand #1), element of the aggregate
- // value specified as operand #0. This is only for use before legalization,
- // for values that will be broken into multiple registers.
+ // EXTRACT_ELEMENT - This is used to get the lower or upper (determined by
+ // a Constant, which is required to be operand #1) half of the integer or
+ // float value specified as operand #0. This is only for use before
+ // legalization, for values that will be broken into multiple registers.
EXTRACT_ELEMENT,
// BUILD_PAIR - This is the opposite of EXTRACT_ELEMENT in some ways. Given
// two values of the same integer value type, this produces a value twice as
// big. Like EXTRACT_ELEMENT, this can only be used before legalization.
BUILD_PAIR,
-
+
// MERGE_VALUES - This node takes multiple discrete operands and returns
// them all as its individual results. This nodes has exactly the same
// number of inputs and outputs, and is only valid before legalization.
ADD, SUB, MUL, SDIV, UDIV, SREM, UREM,
// SMUL_LOHI/UMUL_LOHI - Multiply two integers of type iN, producing
- // a signed/unsigned value of type i[2*n], and return the full value as
+ // a signed/unsigned value of type i[2*N], and return the full value as
// two results, each of type iN.
SMUL_LOHI, UMUL_LOHI,
// FCOPYSIGN(f32, f64) is allowed.
FCOPYSIGN,
+ // INT = FGETSIGN(FP) - Return the sign bit of the specified floating point
+ // value as an integer 0/1 value.
+ FGETSIGN,
+
/// BUILD_VECTOR(ELT0, ELT1, ELT2, ELT3,...) - Return a vector
/// with the specified, possibly variable, elements. The number of elements
/// is required to be a power of two.
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 the low element of the resultant vector type. The top
- /// elements of the vector are undefined.
+ /// scalar value into element 0 of the resultant vector type. The top
+ /// elements 1 to N-1 of the N-element vector are undefined.
SCALAR_TO_VECTOR,
// EXTRACT_SUBREG - This node is used to extract a sub-register value.
// This node takes a superreg and a constant sub-register index as operands.
+ // Note sub-register indices must be increasing. That is, if the
+ // sub-register index of a 8-bit sub-register is N, then the index for a
+ // 16-bit sub-register must be at least N+1.
EXTRACT_SUBREG,
// INSERT_SUBREG - This node is used to insert a sub-register value.
INSERT_SUBREG,
// MULHU/MULHS - Multiply high - Multiply two integers of type iN, producing
- // an unsigned/signed value of type i[2*n], then return the top part.
+ // an unsigned/signed value of type i[2*N], then return the top part.
MULHU, MULHS,
// Bitwise operators - logical and, logical or, logical xor, shift left,
// (op #2) as a CondCodeSDNode.
SETCC,
+ // Vector SetCC operator - This evaluates to a vector of integer elements
+ // with the high bit in each element set to true if the comparison is true
+ // and false if the comparison is false. All other bits in each element
+ // are undefined. The operands to this are the left and right operands
+ // to compare (ops #0, and #1) and the condition code to compare them with
+ // (op #2) as a CondCodeSDNode.
+ VSETCC,
+
// SHL_PARTS/SRA_PARTS/SRL_PARTS - These operators are used for expanded
// integer shift operations, just like ADD/SUB_PARTS. The operation
// ordering is:
// operand, a ValueType node.
SIGN_EXTEND_INREG,
- // FP_TO_[US]INT - Convert a floating point value to a signed or unsigned
- // integer.
+ /// FP_TO_[US]INT - Convert a floating point value to a signed or unsigned
+ /// integer.
FP_TO_SINT,
FP_TO_UINT,
- // FP_ROUND - Perform a rounding operation from the current
- // precision down to the specified precision (currently always 64->32).
+ /// X = FP_ROUND(Y, TRUNC) - Rounding 'Y' from a larger floating point type
+ /// down to the precision of the destination VT. TRUNC is a flag, which is
+ /// always an integer that is zero or one. If TRUNC is 0, this is a
+ /// normal rounding, if it is 1, this FP_ROUND is known to not change the
+ /// value of Y.
+ ///
+ /// The TRUNC = 1 case is used in cases where we know that the value will
+ /// not be modified by the node, because Y is not using any of the extra
+ /// precision of source type. This allows certain transformations like
+ /// FP_EXTEND(FP_ROUND(X,1)) -> X which are not safe for
+ /// FP_EXTEND(FP_ROUND(X,0)) because the extra bits aren't removed.
FP_ROUND,
-
- // FP_ROUND_INREG - This operator takes a floating point register, and
- // rounds it to a floating point value. It then promotes it and returns it
- // in a register of the same size. This operation effectively just discards
- // excess precision. The type to round down to is specified by the 1th
- // operation, a VTSDNode (currently always 64->32->64).
+
+ // FLT_ROUNDS_ - Returns current rounding mode:
+ // -1 Undefined
+ // 0 Round to 0
+ // 1 Round to nearest
+ // 2 Round to +inf
+ // 3 Round to -inf
+ FLT_ROUNDS_,
+
+ /// X = FP_ROUND_INREG(Y, VT) - This operator takes an FP register, and
+ /// rounds it to a floating point value. It then promotes it and returns it
+ /// in a register of the same size. This operation effectively just
+ /// discards excess precision. The type to round down to is specified by
+ /// the VT operand, a VTSDNode.
FP_ROUND_INREG,
- // FP_EXTEND - Extend a smaller FP type into a larger FP type.
+ /// X = FP_EXTEND(Y) - Extend a smaller FP type into a larger FP type.
FP_EXTEND,
// BIT_CONVERT - Theis operator converts between integer and FP values, as
// conversions, but that is a noop, deleted by getNode().
BIT_CONVERT,
- // FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI - Perform unary floating point
- // negation, absolute value, square root, sine and cosine, and powi
+ // FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW - Perform unary floating point
+ // negation, absolute value, square root, sine and cosine, powi, and pow
// operations.
- FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI,
+ FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW,
// LOAD and STORE have token chains as their first operand, then the same
// operands as an LLVM load/store instruction, then an offset node that
// is added / subtracted from the base pointer to form the address (for
// indexed memory ops).
LOAD, STORE,
-
- // TRUNCSTORE - This operators truncates (for integer) or rounds (for FP) a
- // value and stores it to memory in one operation. This can be used for
- // either integer or floating point operands. The first four operands of
- // this are the same as a standard store. The fifth is the ValueType to
- // store it as (which will be smaller than the source value).
- TRUNCSTORE,
// DYNAMIC_STACKALLOC - Allocate some number of bytes on the stack aligned
// to a specified boundary. This node always has two return values: a new
// Operand #last: Optional, an incoming flag.
INLINEASM,
- // LABEL - Represents a label in mid basic block used to track
- // locations needed for debug and exception handling tables. This node
- // returns a chain.
- // Operand #0 : input chain.
- // Operand #1 : module unique number use to identify the label.
- LABEL,
+ // DBG_LABEL, EH_LABEL - Represents a label in mid basic block used to track
+ // locations needed for debug and exception handling tables. These nodes
+ // take a chain as input and return a chain.
+ DBG_LABEL,
+ EH_LABEL,
+
+ // DECLARE - Represents a llvm.dbg.declare intrinsic. It's used to track
+ // local variable declarations for debugging information. First operand is
+ // a chain, while the next two operands are first two arguments (address
+ // and variable) of a llvm.dbg.declare instruction.
+ DECLARE,
// STACKSAVE - STACKSAVE has one operand, an input chain. It produces a
// value, the same type as the pointer type for the system, and an output
// it returns an output chain.
STACKRESTORE,
- // MEMSET/MEMCPY/MEMMOVE - The first operand is the chain, and the rest
- // correspond to the operands of the LLVM intrinsic functions. The only
- // result is a token chain. The alignment argument is guaranteed to be a
- // Constant node.
- MEMSET,
- MEMMOVE,
- MEMCPY,
-
// CALLSEQ_START/CALLSEQ_END - These operators mark the beginning and end of
// 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 MachineMemOperand 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,
// HANDLENODE node - Used as a handle for various purposes.
HANDLENODE,
- // LOCATION - This node is used to represent a source location for debug
- // info. It takes token chain as input, then a line number, then a column
- // number, then a filename, then a working dir. It produces a token chain
- // as output.
- LOCATION,
+ // DBG_STOPPOINT - This node is used to represent a source location for
+ // debug info. It takes token chain as input, and carries a line number,
+ // column number, and a pointer to a CompileUnitDesc object identifying
+ // the containing compilation unit. It produces a token chain as output.
+ DBG_STOPPOINT,
// DEBUG_LOC - This node is used to represent source line information
// embedded in the code. It takes a token chain as input, then a line
// chain as output.
TRAMPOLINE,
+ // 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_CMP_SWAP(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_CMP_SWAP,
+
+ // Val, OUTCHAIN = ATOMIC_LOAD_ADD(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_LOAD_ADD,
+
+ // 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,
+
+ // Val, OUTCHAIN = ATOMIC_LOAD_SUB(INCHAIN, ptr, amt)
+ // this corresponds to the atomic.lss intrinsic.
+ // *ptr - amt is stored to *ptr atomically.
+ // the return is always the original value in *ptr
+ ATOMIC_LOAD_SUB,
+
+ // Val, OUTCHAIN = ATOMIC_L[OpName]S(INCHAIN, ptr, amt)
+ // this corresponds to the atomic.[OpName] intrinsic.
+ // op(*ptr, amt) is stored to *ptr atomically.
+ // the return is always the original value in *ptr
+ ATOMIC_LOAD_AND,
+ ATOMIC_LOAD_OR,
+ ATOMIC_LOAD_XOR,
+ ATOMIC_LOAD_NAND,
+ ATOMIC_LOAD_MIN,
+ ATOMIC_LOAD_MAX,
+ ATOMIC_LOAD_UMIN,
+ ATOMIC_LOAD_UMAX,
+
// BUILTIN_OP_END - This must be the last enum value in this list.
BUILTIN_OP_END
};
/// isBuildVectorAllZeros - Return true if the specified node is a
/// 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::DBG_LABEL or TargetInstrInfo::DBG_LABEL node).
+ bool isDebugLabel(const SDNode *N);
//===--------------------------------------------------------------------===//
/// MemIndexedMode enum - This enum defines the load / store indexed
/// computed and is available in the base pointer. The offset
/// operand is always undefined. In addition to producing a
/// chain, an unindexed load produces one value (result of the
- /// load); an unindexed store does not produces a value.
+ /// load); an unindexed store does not produce a value.
///
/// PRE_INC Similar to the unindexed mode where the effective address is
/// PRE_DEC the value of the base pointer add / subtract the offset.
//===----------------------------------------------------------------------===//
-/// SDOperand - Unlike LLVM values, Selection DAG nodes may return multiple
+/// SDValue - Unlike LLVM values, Selection DAG nodes may return multiple
/// values as the result of a computation. Many nodes return multiple values,
/// from loads (which define a token and a return value) to ADDC (which returns
/// a result and a carry value), to calls (which may return an arbitrary number
///
/// As such, each use of a SelectionDAG computation must indicate the node that
/// computes it as well as which return value to use from that node. This pair
-/// of information is represented with the SDOperand value type.
+/// of information is represented with the SDValue value type.
///
-class SDOperand {
+class SDValue {
public:
SDNode *Val; // The node defining the value we are using.
unsigned ResNo; // Which return value of the node we are using.
- SDOperand() : Val(0), ResNo(0) {}
- SDOperand(SDNode *val, unsigned resno) : Val(val), ResNo(resno) {}
+ SDValue() : Val(0), ResNo(0) {}
+ SDValue(SDNode *val, unsigned resno) : Val(val), ResNo(resno) {}
- bool operator==(const SDOperand &O) const {
+ bool operator==(const SDValue &O) const {
return Val == O.Val && ResNo == O.ResNo;
}
- bool operator!=(const SDOperand &O) const {
+ bool operator!=(const SDValue &O) const {
return !operator==(O);
}
- bool operator<(const SDOperand &O) const {
+ bool operator<(const SDValue &O) const {
return Val < O.Val || (Val == O.Val && ResNo < O.ResNo);
}
- SDOperand getValue(unsigned R) const {
- return SDOperand(Val, R);
+ SDValue getValue(unsigned R) const {
+ return SDValue(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;
+ inline MVT getValueType() const;
+
+ /// getValueSizeInBits - Returns the size of the value in bits.
+ ///
+ unsigned getValueSizeInBits() const {
+ return getValueType().getSizeInBits();
+ }
// Forwarding methods - These forward to the corresponding methods in SDNode.
inline unsigned getOpcode() const;
inline unsigned getNumOperands() const;
- inline const SDOperand &getOperand(unsigned i) const;
+ inline const SDValue &getOperand(unsigned i) const;
inline uint64_t getConstantOperandVal(unsigned i) const;
inline bool isTargetOpcode() const;
- inline unsigned getTargetOpcode() const;
-
- /// hasOneUse - Return true if there is exactly one operation using this
- /// result value of the defining operator.
- inline bool hasOneUse() const;
+ inline bool isMachineOpcode() const;
+ inline unsigned getMachineOpcode() const;
- /// use_empty - Return true if there are no operations using this
- /// result value of the defining operator.
+
+ /// reachesChainWithoutSideEffects - Return true if this operand (which must
+ /// be a chain) reaches the specified operand without crossing any
+ /// side-effecting instructions. In practice, this looks through token
+ /// factors and non-volatile loads. In order to remain efficient, this only
+ /// looks a couple of nodes in, it does not do an exhaustive search.
+ bool reachesChainWithoutSideEffects(SDValue Dest,
+ unsigned Depth = 2) const;
+
+ /// use_empty - Return true if there are no nodes using value ResNo
+ /// of node Val.
+ ///
inline bool use_empty() const;
+
+ /// use_empty - Return true if there is exactly one node using value
+ /// ResNo of node Val.
+ ///
+ inline bool hasOneUse() const;
};
-template<> struct DenseMapInfo<SDOperand> {
- 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;
+template<> struct DenseMapInfo<SDValue> {
+ static inline SDValue getEmptyKey() {
+ return SDValue((SDNode*)-1, -1U);
}
- static bool isEqual(const SDOperand &LHS, const SDOperand &RHS) {
+ static inline SDValue getTombstoneKey() {
+ return SDValue((SDNode*)-1, 0);
+ }
+ static unsigned getHashValue(const SDValue &Val) {
+ return ((unsigned)((uintptr_t)Val.Val >> 4) ^
+ (unsigned)((uintptr_t)Val.Val >> 9)) + Val.ResNo;
+ }
+ static bool isEqual(const SDValue &LHS, const SDValue &RHS) {
return LHS == RHS;
}
static bool isPod() { return true; }
};
/// simplify_type specializations - Allow casting operators to work directly on
-/// SDOperands as if they were SDNode*'s.
-template<> struct simplify_type<SDOperand> {
+/// SDValues as if they were SDNode*'s.
+template<> struct simplify_type<SDValue> {
typedef SDNode* SimpleType;
- static SimpleType getSimplifiedValue(const SDOperand &Val) {
+ static SimpleType getSimplifiedValue(const SDValue &Val) {
return static_cast<SimpleType>(Val.Val);
}
};
-template<> struct simplify_type<const SDOperand> {
+template<> struct simplify_type<const SDValue> {
typedef SDNode* SimpleType;
- static SimpleType getSimplifiedValue(const SDOperand &Val) {
+ static SimpleType getSimplifiedValue(const SDValue &Val) {
return static_cast<SimpleType>(Val.Val);
}
};
+/// SDUse - Represents a use of the SDNode referred by
+/// the SDValue.
+class SDUse {
+ SDValue Operand;
+ /// User - Parent node of this operand.
+ SDNode *User;
+ /// Prev, next - Pointers to the uses list of the SDNode referred by
+ /// this operand.
+ SDUse **Prev, *Next;
+public:
+ friend class SDNode;
+ SDUse(): Operand(), User(NULL), Prev(NULL), Next(NULL) {}
+
+ SDUse(SDNode *val, unsigned resno) :
+ Operand(val,resno), User(NULL), Prev(NULL), Next(NULL) {}
+
+ SDUse& operator= (const SDValue& Op) {
+ Operand = Op;
+ Next = NULL;
+ Prev = NULL;
+ return *this;
+ }
+
+ SDUse& operator= (const SDUse& Op) {
+ Operand = Op;
+ Next = NULL;
+ Prev = NULL;
+ return *this;
+ }
+
+ SDUse *getNext() { return Next; }
+
+ SDNode *getUser() { return User; }
+
+ void setUser(SDNode *p) { User = p; }
+
+ operator SDValue() const { return Operand; }
+
+ const SDValue& getSDValue() const { return Operand; }
+
+ SDNode *&getVal() { return Operand.Val; }
+ SDNode *const &getVal() const { return Operand.Val; }
+
+ bool operator==(const SDValue &O) const {
+ return Operand == O;
+ }
+
+ bool operator!=(const SDValue &O) const {
+ return !(Operand == O);
+ }
+
+ bool operator<(const SDValue &O) const {
+ return Operand < O;
+ }
+
+protected:
+ void addToList(SDUse **List) {
+ Next = *List;
+ if (Next) Next->Prev = &Next;
+ Prev = List;
+ *List = this;
+ }
+
+ void removeFromList() {
+ *Prev = Next;
+ if (Next) Next->Prev = Prev;
+ }
+};
+
+
+/// simplify_type specializations - Allow casting operators to work directly on
+/// SDValues as if they were SDNode*'s.
+template<> struct simplify_type<SDUse> {
+ typedef SDNode* SimpleType;
+ static SimpleType getSimplifiedValue(const SDUse &Val) {
+ return static_cast<SimpleType>(Val.getVal());
+ }
+};
+template<> struct simplify_type<const SDUse> {
+ typedef SDNode* SimpleType;
+ static SimpleType getSimplifiedValue(const SDUse &Val) {
+ return static_cast<SimpleType>(Val.getVal());
+ }
+};
+
+
+/// SDOperandPtr - A helper SDValue pointer class, that can handle
+/// arrays of SDUse and arrays of SDValue objects. This is required
+/// in many places inside the SelectionDAG.
+///
+class SDOperandPtr {
+ const SDValue *ptr; // The pointer to the SDValue object
+ int object_size; // The size of the object containg the SDValue
+public:
+ SDOperandPtr() : ptr(0), object_size(0) {}
+
+ SDOperandPtr(SDUse * use_ptr) {
+ ptr = &use_ptr->getSDValue();
+ object_size = (int)sizeof(SDUse);
+ }
+
+ SDOperandPtr(const SDValue * op_ptr) {
+ ptr = op_ptr;
+ object_size = (int)sizeof(SDValue);
+ }
+
+ const SDValue operator *() { return *ptr; }
+ const SDValue *operator ->() { return ptr; }
+ SDOperandPtr operator ++ () {
+ ptr = (SDValue*)((char *)ptr + object_size);
+ return *this;
+ }
+
+ SDOperandPtr operator ++ (int) {
+ SDOperandPtr tmp = *this;
+ ptr = (SDValue*)((char *)ptr + object_size);
+ return tmp;
+ }
+
+ SDValue operator[] (int idx) const {
+ return *(SDValue*)((char*) ptr + object_size * idx);
+ }
+};
/// SDNode - Represents one node in the SelectionDAG.
///
class SDNode : public FoldingSetNode {
+private:
/// NodeType - The operation that this node performs.
///
- unsigned short NodeType;
+ short NodeType;
/// OperandsNeedDelete - This is true if OperandList was new[]'d. If true,
/// then they will be delete[]'d when the node is destroyed.
- bool OperandsNeedDelete : 1;
+ unsigned short OperandsNeedDelete : 1;
+
+protected:
+ /// SubclassData - This member is defined by this class, but is not used for
+ /// anything. Subclasses can use it to hold whatever state they find useful.
+ /// This field is initialized to zero by the ctor.
+ unsigned short SubclassData : 15;
+private:
/// NodeId - Unique id per SDNode in the DAG.
int NodeId;
/// OperandList - The values that are used by this operation.
///
- SDOperand *OperandList;
+ SDUse *OperandList;
/// ValueList - The types of the values this node defines. SDNode's may
/// define multiple values simultaneously.
- const MVT::ValueType *ValueList;
+ const MVT *ValueList;
/// NumOperands/NumValues - The number of entries in the Operand/Value list.
unsigned short NumOperands, NumValues;
- /// Prev/Next pointers - These pointers form the linked list of of the
- /// AllNodes list in the current DAG.
- SDNode *Prev, *Next;
- friend struct ilist_traits<SDNode>;
-
- /// Uses - These are all of the SDNode's that use a value produced by this
- /// node.
- SmallVector<SDNode*,3> Uses;
-
+ /// Uses - List of uses for this SDNode.
+ SDUse *Uses;
+
+ /// addUse - add SDUse to the list of uses.
+ void addUse(SDUse &U) { U.addToList(&Uses); }
+
// Out-of-line virtual method to give class a home.
virtual void ANCHOR();
public:
//===--------------------------------------------------------------------===//
// Accessors
//
- unsigned getOpcode() const { return NodeType; }
+
+ /// getOpcode - Return the SelectionDAG opcode value for this node. For
+ /// pre-isel nodes (those for which isMachineOpcode returns false), these
+ /// are the opcode values in the ISD and <target>ISD namespaces. For
+ /// post-isel opcodes, see getMachineOpcode.
+ unsigned getOpcode() const { return (unsigned short)NodeType; }
+
+ /// isTargetOpcode - Test if this node has a target-specific opcode (in the
+ /// <target>ISD namespace).
bool isTargetOpcode() const { return NodeType >= ISD::BUILTIN_OP_END; }
- unsigned getTargetOpcode() const {
- assert(isTargetOpcode() && "Not a target opcode!");
- return NodeType - ISD::BUILTIN_OP_END;
+
+ /// isMachineOpcode - Test if this node has a post-isel opcode, directly
+ /// corresponding to a MachineInstr opcode.
+ bool isMachineOpcode() const { return NodeType < 0; }
+
+ /// getMachineOpcode - This may only be called if isMachineOpcode returns
+ /// true. It returns the MachineInstr opcode value that the node's opcode
+ /// corresponds to.
+ unsigned getMachineOpcode() const {
+ assert(isMachineOpcode() && "Not a target opcode!");
+ return ~NodeType;
+ }
+
+ /// use_empty - Return true if there are no uses of this value.
+ ///
+ bool use_empty() const { return Uses == NULL; }
+
+ /// hasOneUse - Return true if there is exactly one use of this value.
+ ///
+ bool hasOneUse() const {
+ return !use_empty() && next(use_begin()) == use_end();
}
- size_t use_size() const { return Uses.size(); }
- bool use_empty() const { return Uses.empty(); }
- bool hasOneUse() const { return Uses.size() == 1; }
+ /// use_size - Return the number of uses of this value. This method takes
+ /// time proportional to the number of uses.
+ ///
+ size_t use_size() const { return std::distance(use_begin(), use_end()); }
/// getNodeId - Return the unique node id.
///
int getNodeId() const { return NodeId; }
- typedef SmallVector<SDNode*,3>::const_iterator use_iterator;
- use_iterator use_begin() const { return Uses.begin(); }
- use_iterator use_end() const { return Uses.end(); }
+ /// setNodeId - Set unique node id.
+ void setNodeId(int Id) { NodeId = Id; }
+
+ /// use_iterator - This class provides iterator support for SDUse
+ /// operands that use a specific SDNode.
+ class use_iterator
+ : public forward_iterator<SDUse, ptrdiff_t> {
+ SDUse *Op;
+ explicit use_iterator(SDUse *op) : Op(op) {
+ }
+ friend class SDNode;
+ public:
+ typedef forward_iterator<SDUse, ptrdiff_t>::reference reference;
+ typedef forward_iterator<SDUse, ptrdiff_t>::pointer pointer;
+
+ use_iterator(const use_iterator &I) : Op(I.Op) {}
+ use_iterator() : Op(0) {}
+
+ bool operator==(const use_iterator &x) const {
+ return Op == x.Op;
+ }
+ bool operator!=(const use_iterator &x) const {
+ return !operator==(x);
+ }
+
+ /// atEnd - return true if this iterator is at the end of uses list.
+ bool atEnd() const { return Op == 0; }
+
+ // Iterator traversal: forward iteration only.
+ use_iterator &operator++() { // Preincrement
+ assert(Op && "Cannot increment end iterator!");
+ Op = Op->getNext();
+ return *this;
+ }
+
+ use_iterator operator++(int) { // Postincrement
+ use_iterator tmp = *this; ++*this; return tmp;
+ }
+
+ /// Retrieve a pointer to the current user node.
+ SDNode *operator*() const {
+ assert(Op && "Cannot dereference end iterator!");
+ return Op->getUser();
+ }
+
+ SDNode *operator->() const { return operator*(); }
+
+ SDUse &getUse() const { return *Op; }
+
+ /// getOperandNo - Retrive the operand # of this use in its user.
+ ///
+ unsigned getOperandNo() const {
+ assert(Op && "Cannot dereference end iterator!");
+ return (unsigned)(Op - Op->getUser()->OperandList);
+ }
+ };
+
+ /// use_begin/use_end - Provide iteration support to walk over all uses
+ /// of an SDNode.
+
+ use_iterator use_begin() const {
+ return use_iterator(Uses);
+ }
+
+ static use_iterator use_end() { return use_iterator(0); }
+
/// hasNUsesOfValue - Return true if there are exactly NUSES uses of the
/// indicated value. This method ignores uses of other values defined by this
/// 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.
+ /// isOnlyUserOf - Return true if this node is the only use of N.
///
- bool isOnlyUse(SDNode *N) const;
+ bool isOnlyUserOf(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.
///
/// ConstantSDNode operand.
uint64_t getConstantOperandVal(unsigned Num) const;
- const SDOperand &getOperand(unsigned Num) const {
+ const SDValue &getOperand(unsigned Num) const {
assert(Num < NumOperands && "Invalid child # of SDNode!");
- return OperandList[Num];
+ return OperandList[Num].getSDValue();
}
- typedef const SDOperand* op_iterator;
+ typedef SDUse* op_iterator;
op_iterator op_begin() const { return OperandList; }
op_iterator op_end() const { return OperandList+NumOperands; }
/// getValueType - Return the type of a specified result.
///
- MVT::ValueType getValueType(unsigned ResNo) const {
+ MVT getValueType(unsigned ResNo) const {
assert(ResNo < NumValues && "Illegal result number!");
return ValueList[ResNo];
}
- typedef const MVT::ValueType* value_iterator;
+ /// getValueSizeInBits - Returns MVT::getSizeInBits(getValueType(ResNo)).
+ ///
+ unsigned getValueSizeInBits(unsigned ResNo) const {
+ return getValueType(ResNo).getSizeInBits();
+ }
+
+ typedef const MVT* 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 SDVTList getSDVTList(MVT::ValueType VT) {
+ static const MVT *getValueTypeList(MVT VT);
+ static SDVTList getSDVTList(MVT VT) {
SDVTList Ret = { getValueTypeList(VT), 1 };
return Ret;
}
- SDNode(unsigned Opc, SDVTList VTs, const SDOperand *Ops, unsigned NumOps)
- : NodeType(Opc), NodeId(-1) {
+ SDNode(unsigned Opc, SDVTList VTs, const SDValue *Ops, unsigned NumOps)
+ : NodeType(Opc), OperandsNeedDelete(true), SubclassData(0),
+ NodeId(-1), Uses(NULL) {
+ NumOperands = NumOps;
+ OperandList = NumOps ? new SDUse[NumOperands] : 0;
+
+ for (unsigned i = 0; i != NumOps; ++i) {
+ OperandList[i] = Ops[i];
+ OperandList[i].setUser(this);
+ Ops[i].Val->addUse(OperandList[i]);
+ }
+
+ ValueList = VTs.VTs;
+ NumValues = VTs.NumVTs;
+ }
+
+ SDNode(unsigned Opc, SDVTList VTs, const SDUse *Ops, unsigned NumOps)
+ : NodeType(Opc), OperandsNeedDelete(true), SubclassData(0),
+ NodeId(-1), Uses(NULL) {
OperandsNeedDelete = true;
NumOperands = NumOps;
- OperandList = NumOps ? new SDOperand[NumOperands] : 0;
+ OperandList = NumOps ? new SDUse[NumOperands] : 0;
for (unsigned i = 0; i != NumOps; ++i) {
OperandList[i] = Ops[i];
- Ops[i].Val->Uses.push_back(this);
+ OperandList[i].setUser(this);
+ Ops[i].getVal()->addUse(OperandList[i]);
}
ValueList = VTs.VTs;
NumValues = VTs.NumVTs;
- Prev = 0; Next = 0;
}
- SDNode(unsigned Opc, SDVTList VTs) : NodeType(Opc), NodeId(-1) {
- OperandsNeedDelete = false; // Operands set with InitOperands.
+
+ /// This constructor adds no operands itself; operands can be
+ /// set later with InitOperands.
+ SDNode(unsigned Opc, SDVTList VTs)
+ : NodeType(Opc), OperandsNeedDelete(false), SubclassData(0),
+ NodeId(-1), Uses(NULL) {
NumOperands = 0;
OperandList = 0;
-
ValueList = VTs.VTs;
NumValues = VTs.NumVTs;
- Prev = 0; Next = 0;
}
/// InitOperands - Initialize the operands list of this node with the
/// specified values, which are part of the node (thus they don't need to be
/// copied in or allocated).
- void InitOperands(SDOperand *Ops, unsigned NumOps) {
+ void InitOperands(SDUse *Ops, unsigned NumOps) {
assert(OperandList == 0 && "Operands already set!");
NumOperands = NumOps;
OperandList = Ops;
+ Uses = NULL;
- for (unsigned i = 0; i != NumOps; ++i)
- Ops[i].Val->Uses.push_back(this);
+ for (unsigned i = 0; i != NumOps; ++i) {
+ OperandList[i].setUser(this);
+ Ops[i].getVal()->addUse(OperandList[i]);
+ }
}
+
+ /// DropOperands - Release the operands and set this node to have
+ /// zero operands.
+ void DropOperands();
- /// MorphNodeTo - This frees the operands of the current node, resets the
- /// opcode, types, and operands to the specified value. This should only be
- /// used by the SelectionDAG class.
- void MorphNodeTo(unsigned Opc, SDVTList L,
- const SDOperand *Ops, unsigned NumOps);
-
- void addUser(SDNode *User) {
- Uses.push_back(User);
- }
- void removeUser(SDNode *User) {
- // Remove this user from the operand's use list.
- for (unsigned i = Uses.size(); ; --i) {
- assert(i != 0 && "Didn't find user!");
- if (Uses[i-1] == User) {
- Uses[i-1] = Uses.back();
- Uses.pop_back();
- return;
- }
- }
+ void addUser(unsigned i, SDNode *User) {
+ assert(User->OperandList[i].getUser() && "Node without parent");
+ addUse(User->OperandList[i]);
}
- void setNodeId(int Id) {
- NodeId = Id;
+ void removeUser(unsigned i, SDNode *User) {
+ assert(User->OperandList[i].getUser() && "Node without parent");
+ SDUse &Op = User->OperandList[i];
+ Op.removeFromList();
}
};
-// Define inline functions from the SDOperand class.
+// Define inline functions from the SDValue class.
-inline unsigned SDOperand::getOpcode() const {
+inline unsigned SDValue::getOpcode() const {
return Val->getOpcode();
}
-inline MVT::ValueType SDOperand::getValueType() const {
+inline MVT SDValue::getValueType() const {
return Val->getValueType(ResNo);
}
-inline unsigned SDOperand::getNumOperands() const {
+inline unsigned SDValue::getNumOperands() const {
return Val->getNumOperands();
}
-inline const SDOperand &SDOperand::getOperand(unsigned i) const {
+inline const SDValue &SDValue::getOperand(unsigned i) const {
return Val->getOperand(i);
}
-inline uint64_t SDOperand::getConstantOperandVal(unsigned i) const {
+inline uint64_t SDValue::getConstantOperandVal(unsigned i) const {
return Val->getConstantOperandVal(i);
}
-inline bool SDOperand::isTargetOpcode() const {
+inline bool SDValue::isTargetOpcode() const {
return Val->isTargetOpcode();
}
-inline unsigned SDOperand::getTargetOpcode() const {
- return Val->getTargetOpcode();
+inline bool SDValue::isMachineOpcode() const {
+ return Val->isMachineOpcode();
}
-inline bool SDOperand::hasOneUse() const {
- return Val->hasNUsesOfValue(1, ResNo);
+inline unsigned SDValue::getMachineOpcode() const {
+ return Val->getMachineOpcode();
}
-inline bool SDOperand::use_empty() const {
+inline bool SDValue::use_empty() const {
return !Val->hasAnyUseOfValue(ResNo);
}
+inline bool SDValue::hasOneUse() const {
+ return Val->hasNUsesOfValue(1, ResNo);
+}
/// UnarySDNode - This class is used for single-operand SDNodes. This is solely
/// to allow co-allocation of node operands with the node itself.
class UnarySDNode : public SDNode {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- SDOperand Op;
+ SDUse Op;
public:
- UnarySDNode(unsigned Opc, SDVTList VTs, SDOperand X)
- : SDNode(Opc, VTs), Op(X) {
+ UnarySDNode(unsigned Opc, SDVTList VTs, SDValue X)
+ : SDNode(Opc, VTs) {
+ Op = X;
InitOperands(&Op, 1);
}
};
/// to allow co-allocation of node operands with the node itself.
class BinarySDNode : public SDNode {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- SDOperand Ops[2];
+ SDUse Ops[2];
public:
- BinarySDNode(unsigned Opc, SDVTList VTs, SDOperand X, SDOperand Y)
+ BinarySDNode(unsigned Opc, SDVTList VTs, SDValue X, SDValue Y)
: SDNode(Opc, VTs) {
Ops[0] = X;
Ops[1] = Y;
/// to allow co-allocation of node operands with the node itself.
class TernarySDNode : public SDNode {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- SDOperand Ops[3];
+ SDUse Ops[3];
public:
- TernarySDNode(unsigned Opc, SDVTList VTs, SDOperand X, SDOperand Y,
- SDOperand Z)
+ TernarySDNode(unsigned Opc, SDVTList VTs, SDValue X, SDValue Y,
+ SDValue Z)
: SDNode(Opc, VTs) {
Ops[0] = X;
Ops[1] = Y;
/// the AllNodes list.
class HandleSDNode : public SDNode {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- SDOperand Op;
+ SDUse Op;
public:
- explicit HandleSDNode(SDOperand X)
- : SDNode(ISD::HANDLENODE, getSDVTList(MVT::Other)), Op(X) {
+ // FIXME: Remove the "noinline" attribute once <rdar://problem/5852746> is
+ // fixed.
+#ifdef __GNUC__
+ explicit __attribute__((__noinline__)) HandleSDNode(SDValue X)
+#else
+ explicit HandleSDNode(SDValue X)
+#endif
+ : SDNode(ISD::HANDLENODE, getSDVTList(MVT::Other)) {
+ Op = X;
InitOperands(&Op, 1);
}
~HandleSDNode();
- SDOperand getValue() const { return Op; }
+ SDUse getValue() const { return Op; }
};
-class StringSDNode : public SDNode {
- std::string Value;
+/// Abstact virtual class for operations for memory operations
+class MemSDNode : public SDNode {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
-protected:
- friend class SelectionDAG;
- explicit StringSDNode(const std::string &val)
- : SDNode(ISD::STRING, getSDVTList(MVT::Other)), Value(val) {
- }
+
+private:
+ // MemoryVT - VT of in-memory value.
+ MVT MemoryVT;
+
+ //! SrcValue - Memory location for alias analysis.
+ const Value *SrcValue;
+
+ //! SVOffset - Memory location offset. Note that base is defined in MemSDNode
+ int SVOffset;
+
+ /// Flags - the low bit indicates whether this is a volatile reference;
+ /// the remainder is a log2 encoding of the alignment in bytes.
+ unsigned Flags;
+
public:
- const std::string &getValue() const { return Value; }
- static bool classof(const StringSDNode *) { return true; }
+ MemSDNode(unsigned Opc, SDVTList VTs, MVT MemoryVT,
+ const Value *srcValue, int SVOff,
+ unsigned alignment, bool isvolatile);
+
+ /// Returns alignment and volatility of the memory access
+ unsigned getAlignment() const { return (1u << (Flags >> 1)) >> 1; }
+ bool isVolatile() const { return Flags & 1; }
+
+ /// Returns the SrcValue and offset that describes the location of the access
+ const Value *getSrcValue() const { return SrcValue; }
+ int getSrcValueOffset() const { return SVOffset; }
+
+ /// getMemoryVT - Return the type of the in-memory value.
+ MVT getMemoryVT() const { return MemoryVT; }
+
+ /// getMemOperand - Return a MachineMemOperand object describing the memory
+ /// reference performed by operation.
+ MachineMemOperand getMemOperand() const;
+
+ const SDValue &getChain() const { return getOperand(0); }
+ const SDValue &getBasePtr() const {
+ return getOperand(getOpcode() == ISD::STORE ? 2 : 1);
+ }
+
+ // Methods to support isa and dyn_cast
+ static bool classof(const MemSDNode *) { return true; }
+ static bool classof(const SDNode *N) {
+ return N->getOpcode() == ISD::LOAD ||
+ N->getOpcode() == ISD::STORE ||
+ N->getOpcode() == ISD::ATOMIC_CMP_SWAP ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_ADD ||
+ N->getOpcode() == ISD::ATOMIC_SWAP ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_SUB ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_AND ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_OR ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_XOR ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_NAND ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_MIN ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_MAX ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_UMIN ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_UMAX;
+ }
+};
+
+/// Atomic operations node
+class AtomicSDNode : public MemSDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+ SDUse Ops[4];
+
+ public:
+ // Opc: opcode for atomic
+ // VTL: value type list
+ // Chain: memory chain for operaand
+ // Ptr: address to update as a SDValue
+ // Cmp: compare value
+ // Swp: swap value
+ // SrcVal: address to update as a Value (used for MemOperand)
+ // Align: alignment of memory
+ AtomicSDNode(unsigned Opc, SDVTList VTL, SDValue Chain, SDValue Ptr,
+ SDValue Cmp, SDValue Swp, const Value* SrcVal,
+ unsigned Align=0)
+ : MemSDNode(Opc, VTL, Cmp.getValueType(), SrcVal, /*SVOffset=*/0,
+ Align, /*isVolatile=*/true) {
+ Ops[0] = Chain;
+ Ops[1] = Ptr;
+ Ops[2] = Swp;
+ Ops[3] = Cmp;
+ InitOperands(Ops, 4);
+ }
+ AtomicSDNode(unsigned Opc, SDVTList VTL, SDValue Chain, SDValue Ptr,
+ SDValue Val, const Value* SrcVal, unsigned Align=0)
+ : MemSDNode(Opc, VTL, Val.getValueType(), SrcVal, /*SVOffset=*/0,
+ Align, /*isVolatile=*/true) {
+ Ops[0] = Chain;
+ Ops[1] = Ptr;
+ Ops[2] = Val;
+ InitOperands(Ops, 3);
+ }
+
+ const SDValue &getBasePtr() const { return getOperand(1); }
+ const SDValue &getVal() const { return getOperand(2); }
+
+ bool isCompareAndSwap() const { return getOpcode() == ISD::ATOMIC_CMP_SWAP; }
+
+ // Methods to support isa and dyn_cast
+ static bool classof(const AtomicSDNode *) { return true; }
static bool classof(const SDNode *N) {
- return N->getOpcode() == ISD::STRING;
+ return N->getOpcode() == ISD::ATOMIC_CMP_SWAP ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_ADD ||
+ N->getOpcode() == ISD::ATOMIC_SWAP ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_SUB ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_AND ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_OR ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_XOR ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_NAND ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_MIN ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_MAX ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_UMIN ||
+ N->getOpcode() == ISD::ATOMIC_LOAD_UMAX;
}
-};
+};
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 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);
+ unsigned Bits = getValueType(0).getSizeInBits();
+ return ((int64_t)Value.getZExtValue() << (64-Bits)) >> (64-Bits);
}
bool isNullValue() const { return Value == 0; }
bool isAllOnesValue() const {
- return Value == MVT::getIntVTBitMask(getValueType(0));
+ return Value == getValueType(0).getIntegerVTBitMask();
}
static bool classof(const ConstantSDNode *) { return true; }
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)
+ ConstantFPSDNode(bool isTarget, const APFloat& val, MVT VT)
: SDNode(isTarget ? ISD::TargetConstantFP : ISD::ConstantFP,
getSDVTList(VT)), Value(val) {
}
/// We leave the version with the double argument here because it's just so
/// convenient to write "2.0" and the like. Without this function we'd
/// have to duplicate its logic everywhere it's called.
- bool isExactlyValue(double V) const {
- if (getValueType(0)==MVT::f64)
- return isExactlyValue(APFloat(V));
- else
- return isExactlyValue(APFloat((float)V));
+ bool isExactlyValue(double V) const {
+ // convert is not supported on this type
+ if (&Value.getSemantics() == &APFloat::PPCDoubleDouble)
+ return false;
+ APFloat Tmp(V);
+ Tmp.convert(Value.getSemantics(), APFloat::rmNearestTiesToEven);
+ return isExactlyValue(Tmp);
}
bool isExactlyValue(const APFloat& V) const;
- bool isValueValidForType(MVT::ValueType VT, const APFloat& Val);
+ bool isValueValidForType(MVT VT, const APFloat& Val);
static bool classof(const ConstantFPSDNode *) { return true; }
static bool classof(const SDNode *N) {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- GlobalAddressSDNode(bool isTarget, const GlobalValue *GA, MVT::ValueType VT,
- int o = 0);
+ GlobalAddressSDNode(bool isTarget, const GlobalValue *GA, MVT VT, int o = 0);
public:
GlobalValue *getGlobal() const { return TheGlobal; }
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- FrameIndexSDNode(int fi, MVT::ValueType VT, bool isTarg)
+ FrameIndexSDNode(int fi, MVT VT, bool isTarg)
: SDNode(isTarg ? ISD::TargetFrameIndex : ISD::FrameIndex, getSDVTList(VT)),
FI(fi) {
}
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- JumpTableSDNode(int jti, MVT::ValueType VT, bool isTarg)
+ JumpTableSDNode(int jti, MVT VT, bool isTarg)
: SDNode(isTarg ? ISD::TargetJumpTable : ISD::JumpTable, getSDVTList(VT)),
JTI(jti) {
}
public:
- int getIndex() const { return JTI; }
+ int getIndex() const { return JTI; }
static bool classof(const JumpTableSDNode *) { return true; }
static bool classof(const SDNode *N) {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- ConstantPoolSDNode(bool isTarget, Constant *c, MVT::ValueType VT,
- int o=0)
+ ConstantPoolSDNode(bool isTarget, Constant *c, MVT VT, int o=0)
: SDNode(isTarget ? ISD::TargetConstantPool : ISD::ConstantPool,
getSDVTList(VT)), Offset(o), Alignment(0) {
assert((int)Offset >= 0 && "Offset is too large");
Val.ConstVal = c;
}
- ConstantPoolSDNode(bool isTarget, Constant *c, MVT::ValueType VT, int o,
- unsigned Align)
+ ConstantPoolSDNode(bool isTarget, Constant *c, MVT VT, int o, unsigned Align)
: SDNode(isTarget ? ISD::TargetConstantPool : ISD::ConstantPool,
getSDVTList(VT)), Offset(o), Alignment(Align) {
assert((int)Offset >= 0 && "Offset is too large");
Val.ConstVal = c;
}
ConstantPoolSDNode(bool isTarget, MachineConstantPoolValue *v,
- MVT::ValueType VT, int o=0)
+ MVT VT, int o=0)
: SDNode(isTarget ? ISD::TargetConstantPool : ISD::ConstantPool,
getSDVTList(VT)), Offset(o), Alignment(0) {
assert((int)Offset >= 0 && "Offset is too large");
Offset |= 1 << (sizeof(unsigned)*8-1);
}
ConstantPoolSDNode(bool isTarget, MachineConstantPoolValue *v,
- MVT::ValueType VT, int o, unsigned Align)
+ MVT VT, int o, unsigned Align)
: SDNode(isTarget ? ISD::TargetConstantPool : ISD::ConstantPool,
getSDVTList(VT)), Offset(o), Alignment(Align) {
assert((int)Offset >= 0 && "Offset is too large");
}
};
+/// 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 MachineMemOperand. 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 MachineMemOperand node
+ explicit MemOperandSDNode(const MachineMemOperand &mo)
+ : SDNode(ISD::MEMOPERAND, getSDVTList(MVT::Other)), MO(mo) {}
+
+public:
+ /// MO - The contained MachineMemOperand.
+ const MachineMemOperand 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.
protected:
friend class SelectionDAG;
- RegisterSDNode(unsigned reg, MVT::ValueType VT)
+ RegisterSDNode(unsigned reg, MVT VT)
: SDNode(ISD::Register, getSDVTList(VT)), Reg(reg) {
}
public:
}
};
+class DbgStopPointSDNode : public SDNode {
+ SDUse Chain;
+ unsigned Line;
+ unsigned Column;
+ const CompileUnitDesc *CU;
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+protected:
+ friend class SelectionDAG;
+ DbgStopPointSDNode(SDValue ch, unsigned l, unsigned c,
+ const CompileUnitDesc *cu)
+ : SDNode(ISD::DBG_STOPPOINT, getSDVTList(MVT::Other)),
+ Line(l), Column(c), CU(cu) {
+ Chain = ch;
+ InitOperands(&Chain, 1);
+ }
+public:
+ unsigned getLine() const { return Line; }
+ unsigned getColumn() const { return Column; }
+ const CompileUnitDesc *getCompileUnit() const { return CU; }
+
+ static bool classof(const DbgStopPointSDNode *) { return true; }
+ static bool classof(const SDNode *N) {
+ return N->getOpcode() == ISD::DBG_STOPPOINT;
+ }
+};
+
+class LabelSDNode : public SDNode {
+ SDUse Chain;
+ unsigned LabelID;
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+protected:
+ friend class SelectionDAG;
+ LabelSDNode(unsigned NodeTy, SDValue ch, unsigned id)
+ : SDNode(NodeTy, getSDVTList(MVT::Other)), LabelID(id) {
+ Chain = ch;
+ InitOperands(&Chain, 1);
+ }
+public:
+ unsigned getLabelID() const { return LabelID; }
+
+ static bool classof(const LabelSDNode *) { return true; }
+ static bool classof(const SDNode *N) {
+ return N->getOpcode() == ISD::DBG_LABEL ||
+ N->getOpcode() == ISD::EH_LABEL;
+ }
+};
+
class ExternalSymbolSDNode : public SDNode {
const char *Symbol;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- ExternalSymbolSDNode(bool isTarget, const char *Sym, MVT::ValueType VT)
+ ExternalSymbolSDNode(bool isTarget, const char *Sym, MVT VT)
: SDNode(isTarget ? ISD::TargetExternalSymbol : ISD::ExternalSymbol,
getSDVTList(VT)), Symbol(Sym) {
}
}
};
-/// VTSDNode - This class is used to represent MVT::ValueType's, which are used
+namespace ISD {
+ struct ArgFlagsTy {
+ private:
+ static const uint64_t NoFlagSet = 0ULL;
+ static const uint64_t ZExt = 1ULL<<0; ///< Zero extended
+ static const uint64_t ZExtOffs = 0;
+ static const uint64_t SExt = 1ULL<<1; ///< Sign extended
+ static const uint64_t SExtOffs = 1;
+ static const uint64_t InReg = 1ULL<<2; ///< Passed in register
+ static const uint64_t InRegOffs = 2;
+ static const uint64_t SRet = 1ULL<<3; ///< Hidden struct-ret ptr
+ static const uint64_t SRetOffs = 3;
+ static const uint64_t ByVal = 1ULL<<4; ///< Struct passed by value
+ static const uint64_t ByValOffs = 4;
+ static const uint64_t Nest = 1ULL<<5; ///< Nested fn static chain
+ static const uint64_t NestOffs = 5;
+ static const uint64_t ByValAlign = 0xFULL << 6; //< Struct alignment
+ static const uint64_t ByValAlignOffs = 6;
+ static const uint64_t Split = 1ULL << 10;
+ static const uint64_t SplitOffs = 10;
+ static const uint64_t OrigAlign = 0x1FULL<<27;
+ static const uint64_t OrigAlignOffs = 27;
+ static const uint64_t ByValSize = 0xffffffffULL << 32; //< Struct size
+ static const uint64_t ByValSizeOffs = 32;
+
+ static const uint64_t One = 1ULL; //< 1 of this type, for shifts
+
+ uint64_t Flags;
+ public:
+ ArgFlagsTy() : Flags(0) { }
+
+ bool isZExt() const { return Flags & ZExt; }
+ void setZExt() { Flags |= One << ZExtOffs; }
+
+ bool isSExt() const { return Flags & SExt; }
+ void setSExt() { Flags |= One << SExtOffs; }
+
+ bool isInReg() const { return Flags & InReg; }
+ void setInReg() { Flags |= One << InRegOffs; }
+
+ bool isSRet() const { return Flags & SRet; }
+ void setSRet() { Flags |= One << SRetOffs; }
+
+ bool isByVal() const { return Flags & ByVal; }
+ void setByVal() { Flags |= One << ByValOffs; }
+
+ bool isNest() const { return Flags & Nest; }
+ void setNest() { Flags |= One << NestOffs; }
+
+ unsigned getByValAlign() const {
+ return (unsigned)
+ ((One << ((Flags & ByValAlign) >> ByValAlignOffs)) / 2);
+ }
+ void setByValAlign(unsigned A) {
+ Flags = (Flags & ~ByValAlign) |
+ (uint64_t(Log2_32(A) + 1) << ByValAlignOffs);
+ }
+
+ bool isSplit() const { return Flags & Split; }
+ void setSplit() { Flags |= One << SplitOffs; }
+
+ unsigned getOrigAlign() const {
+ return (unsigned)
+ ((One << ((Flags & OrigAlign) >> OrigAlignOffs)) / 2);
+ }
+ void setOrigAlign(unsigned A) {
+ Flags = (Flags & ~OrigAlign) |
+ (uint64_t(Log2_32(A) + 1) << OrigAlignOffs);
+ }
+
+ unsigned getByValSize() const {
+ return (unsigned)((Flags & ByValSize) >> ByValSizeOffs);
+ }
+ void setByValSize(unsigned S) {
+ Flags = (Flags & ~ByValSize) | (uint64_t(S) << ByValSizeOffs);
+ }
+
+ /// getArgFlagsString - Returns the flags as a string, eg: "zext align:4".
+ std::string getArgFlagsString();
+
+ /// getRawBits - Represent the flags as a bunch of bits.
+ uint64_t getRawBits() const { return Flags; }
+ };
+}
+
+/// ARG_FLAGSSDNode - Leaf node holding parameter flags.
+class ARG_FLAGSSDNode : public SDNode {
+ ISD::ArgFlagsTy TheFlags;
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+protected:
+ friend class SelectionDAG;
+ explicit ARG_FLAGSSDNode(ISD::ArgFlagsTy Flags)
+ : SDNode(ISD::ARG_FLAGS, getSDVTList(MVT::Other)), TheFlags(Flags) {
+ }
+public:
+ ISD::ArgFlagsTy getArgFlags() const { return TheFlags; }
+
+ static bool classof(const ARG_FLAGSSDNode *) { return true; }
+ static bool classof(const SDNode *N) {
+ return N->getOpcode() == ISD::ARG_FLAGS;
+ }
+};
+
+/// VTSDNode - This class is used to represent MVT's, which are used
/// to parameterize some operations.
class VTSDNode : public SDNode {
- MVT::ValueType ValueType;
+ MVT ValueType;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- explicit VTSDNode(MVT::ValueType VT)
+ explicit VTSDNode(MVT VT)
: SDNode(ISD::VALUETYPE, getSDVTList(MVT::Other)), ValueType(VT) {
}
public:
- MVT::ValueType getVT() const { return ValueType; }
+ MVT getVT() const { return ValueType; }
static bool classof(const VTSDNode *) { return true; }
static bool classof(const SDNode *N) {
}
};
-/// LoadSDNode - This class is used to represent ISD::LOAD nodes.
+/// LSBaseSDNode - Base class for LoadSDNode and StoreSDNode
///
-class LoadSDNode : public SDNode {
- virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- SDOperand Ops[3];
-
- // AddrMode - unindexed, pre-indexed, post-indexed.
- ISD::MemIndexedMode AddrMode;
+class LSBaseSDNode : public MemSDNode {
+protected:
+ //! Operand array for load and store
+ /*!
+ \note Moving this array to the base class captures more
+ common functionality shared between LoadSDNode and
+ StoreSDNode
+ */
+ SDUse Ops[4];
+public:
+ LSBaseSDNode(ISD::NodeType NodeTy, SDValue *Operands, unsigned numOperands,
+ SDVTList VTs, ISD::MemIndexedMode AM, MVT VT,
+ const Value *SV, int SVO, unsigned Align, bool Vol)
+ : MemSDNode(NodeTy, VTs, VT, SV, SVO, Align, Vol) {
+ SubclassData = AM;
+ for (unsigned i = 0; i != numOperands; ++i)
+ Ops[i] = Operands[i];
+ InitOperands(Ops, numOperands);
+ assert(Align != 0 && "Loads and stores should have non-zero aligment");
+ assert((getOffset().getOpcode() == ISD::UNDEF || isIndexed()) &&
+ "Only indexed loads and stores have a non-undef offset operand");
+ }
- // ExtType - non-ext, anyext, sext, zext.
- ISD::LoadExtType ExtType;
+ const SDValue &getOffset() const {
+ return getOperand(getOpcode() == ISD::LOAD ? 2 : 3);
+ }
- // LoadedVT - VT of loaded value before extension.
- MVT::ValueType LoadedVT;
+ /// getAddressingMode - Return the addressing mode for this load or store:
+ /// unindexed, pre-inc, pre-dec, post-inc, or post-dec.
+ ISD::MemIndexedMode getAddressingMode() const {
+ return ISD::MemIndexedMode(SubclassData & 7);
+ }
- // SrcValue - Memory location for alias analysis.
- const Value *SrcValue;
+ /// isIndexed - Return true if this is a pre/post inc/dec load/store.
+ bool isIndexed() const { return getAddressingMode() != ISD::UNINDEXED; }
- // SVOffset - Memory location offset.
- int SVOffset;
+ /// isUnindexed - Return true if this is NOT a pre/post inc/dec load/store.
+ bool isUnindexed() const { return getAddressingMode() == ISD::UNINDEXED; }
- // Alignment - Alignment of memory location in bytes.
- unsigned Alignment;
+ static bool classof(const LSBaseSDNode *) { return true; }
+ static bool classof(const SDNode *N) {
+ return N->getOpcode() == ISD::LOAD ||
+ N->getOpcode() == ISD::STORE;
+ }
+};
- // IsVolatile - True if the load is volatile.
- bool IsVolatile;
+/// LoadSDNode - This class is used to represent ISD::LOAD nodes.
+///
+class LoadSDNode : public LSBaseSDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
- LoadSDNode(SDOperand *ChainPtrOff, SDVTList VTs,
- ISD::MemIndexedMode AM, ISD::LoadExtType ETy, MVT::ValueType LVT,
+ LoadSDNode(SDValue *ChainPtrOff, SDVTList VTs,
+ ISD::MemIndexedMode AM, ISD::LoadExtType ETy, MVT LVT,
const Value *SV, int O=0, unsigned Align=0, bool Vol=false)
- : SDNode(ISD::LOAD, VTs),
- AddrMode(AM), ExtType(ETy), LoadedVT(LVT), SrcValue(SV), SVOffset(O),
- Alignment(Align), IsVolatile(Vol) {
- Ops[0] = ChainPtrOff[0]; // Chain
- Ops[1] = ChainPtrOff[1]; // Ptr
- Ops[2] = ChainPtrOff[2]; // Off
- InitOperands(Ops, 3);
- assert(Align != 0 && "Loads should have non-zero aligment");
- assert((getOffset().getOpcode() == ISD::UNDEF ||
- AddrMode != ISD::UNINDEXED) &&
- "Only indexed load has a non-undef offset operand");
+ : LSBaseSDNode(ISD::LOAD, ChainPtrOff, 3,
+ VTs, AM, LVT, SV, O, Align, Vol) {
+ SubclassData |= (unsigned short)ETy << 3;
}
public:
- const SDOperand getChain() const { return getOperand(0); }
- const SDOperand getBasePtr() const { return getOperand(1); }
- const SDOperand getOffset() const { return getOperand(2); }
- ISD::MemIndexedMode getAddressingMode() const { return AddrMode; }
- ISD::LoadExtType getExtensionType() const { return ExtType; }
- MVT::ValueType getLoadedVT() const { return LoadedVT; }
- const Value *getSrcValue() const { return SrcValue; }
- int getSrcValueOffset() const { return SVOffset; }
- unsigned getAlignment() const { return Alignment; }
- bool isVolatile() const { return IsVolatile; }
+ /// getExtensionType - Return whether this is a plain node,
+ /// or one of the varieties of value-extending loads.
+ ISD::LoadExtType getExtensionType() const {
+ return ISD::LoadExtType((SubclassData >> 3) & 3);
+ }
+ const SDValue &getBasePtr() const { return getOperand(1); }
+ const SDValue &getOffset() const { return getOperand(2); }
+
static bool classof(const LoadSDNode *) { return true; }
static bool classof(const SDNode *N) {
return N->getOpcode() == ISD::LOAD;
/// StoreSDNode - This class is used to represent ISD::STORE nodes.
///
-class StoreSDNode : public SDNode {
+class StoreSDNode : public LSBaseSDNode {
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
- SDOperand Ops[4];
-
- // AddrMode - unindexed, pre-indexed, post-indexed.
- ISD::MemIndexedMode AddrMode;
-
- // IsTruncStore - True if the op does a truncation before store.
- bool IsTruncStore;
-
- // StoredVT - VT of the value after truncation.
- MVT::ValueType StoredVT;
-
- // SrcValue - Memory location for alias analysis.
- const Value *SrcValue;
-
- // SVOffset - Memory location offset.
- int SVOffset;
-
- // Alignment - Alignment of memory location in bytes.
- unsigned Alignment;
-
- // IsVolatile - True if the store is volatile.
- bool IsVolatile;
protected:
friend class SelectionDAG;
- StoreSDNode(SDOperand *ChainValuePtrOff, SDVTList VTs,
- ISD::MemIndexedMode AM, bool isTrunc, MVT::ValueType SVT,
+ StoreSDNode(SDValue *ChainValuePtrOff, SDVTList VTs,
+ ISD::MemIndexedMode AM, bool isTrunc, MVT SVT,
const Value *SV, int O=0, unsigned Align=0, bool Vol=false)
- : SDNode(ISD::STORE, VTs),
- AddrMode(AM), IsTruncStore(isTrunc), StoredVT(SVT), SrcValue(SV),
- SVOffset(O), Alignment(Align), IsVolatile(Vol) {
- Ops[0] = ChainValuePtrOff[0]; // Chain
- Ops[1] = ChainValuePtrOff[1]; // Value
- Ops[2] = ChainValuePtrOff[2]; // Ptr
- Ops[3] = ChainValuePtrOff[3]; // Off
- InitOperands(Ops, 4);
- assert(Align != 0 && "Stores should have non-zero aligment");
- assert((getOffset().getOpcode() == ISD::UNDEF ||
- AddrMode != ISD::UNINDEXED) &&
- "Only indexed store has a non-undef offset operand");
+ : LSBaseSDNode(ISD::STORE, ChainValuePtrOff, 4,
+ VTs, AM, SVT, SV, O, Align, Vol) {
+ SubclassData |= (unsigned short)isTrunc << 3;
}
public:
- const SDOperand getChain() const { return getOperand(0); }
- const SDOperand getValue() const { return getOperand(1); }
- const SDOperand getBasePtr() const { return getOperand(2); }
- const SDOperand getOffset() const { return getOperand(3); }
- ISD::MemIndexedMode getAddressingMode() const { return AddrMode; }
- bool isTruncatingStore() const { return IsTruncStore; }
- MVT::ValueType getStoredVT() const { return StoredVT; }
- const Value *getSrcValue() const { return SrcValue; }
- int getSrcValueOffset() const { return SVOffset; }
- unsigned getAlignment() const { return Alignment; }
- bool isVolatile() const { return IsVolatile; }
+ /// isTruncatingStore - Return true if the op does a truncation before store.
+ /// For integers this is the same as doing a TRUNCATE and storing the result.
+ /// For floats, it is the same as doing an FP_ROUND and storing the result.
+ bool isTruncatingStore() const { return (SubclassData >> 3) & 1; }
+ const SDValue &getValue() const { return getOperand(1); }
+ const SDValue &getBasePtr() const { return getOperand(2); }
+ const SDValue &getOffset() const { return getOperand(3); }
+
static bool classof(const StoreSDNode *) { return true; }
static bool classof(const SDNode *N) {
return N->getOpcode() == ISD::STORE;
}
};
-template<>
-struct ilist_traits<SDNode> {
- static SDNode *getPrev(const SDNode *N) { return N->Prev; }
- static SDNode *getNext(const SDNode *N) { return N->Next; }
-
- static void setPrev(SDNode *N, SDNode *Prev) { N->Prev = Prev; }
- static void setNext(SDNode *N, SDNode *Next) { N->Next = Next; }
-
- static SDNode *createSentinel() {
- return new SDNode(ISD::EntryToken, SDNode::getSDVTList(MVT::Other));
+/// LargestSDNode - The largest SDNode class.
+///
+typedef LoadSDNode LargestSDNode;
+
+// alist_traits specialization for pool-allocating SDNodes.
+template <>
+class alist_traits<SDNode, LargestSDNode> {
+ typedef alist_iterator<SDNode, LargestSDNode> iterator;
+
+public:
+ // Pool-allocate and recycle SDNodes.
+ typedef RecyclingAllocator<BumpPtrAllocator, SDNode, LargestSDNode>
+ AllocatorType;
+
+ // Allocate the allocator immediately inside the traits class.
+ AllocatorType Allocator;
+
+ void addNodeToList(SDNode*) {}
+ void removeNodeFromList(SDNode*) {}
+ void transferNodesFromList(alist_traits &, iterator, iterator) {}
+ void deleteNode(SDNode *N) {
+ N->~SDNode();
+ Allocator.Deallocate(N);
}
- static void destroySentinel(SDNode *N) { delete N; }
- //static SDNode *createNode(const SDNode &V) { return new SDNode(V); }
-
-
- void addNodeToList(SDNode *NTy) {}
- void removeNodeFromList(SDNode *NTy) {}
- void transferNodesFromList(iplist<SDNode, ilist_traits> &L2,
- const ilist_iterator<SDNode> &X,
- const ilist_iterator<SDNode> &Y) {}
};
namespace ISD {
+ /// isNormalLoad - Returns true if the specified node is a non-extending
+ /// and unindexed load.
+ inline bool isNormalLoad(const SDNode *N) {
+ const LoadSDNode *Ld = dyn_cast<LoadSDNode>(N);
+ return Ld && Ld->getExtensionType() == ISD::NON_EXTLOAD &&
+ Ld->getAddressingMode() == ISD::UNINDEXED;
+ }
+
/// isNON_EXTLoad - Returns true if the specified node is a non-extending
/// load.
inline bool isNON_EXTLoad(const SDNode *N) {
- return N->getOpcode() == ISD::LOAD &&
+ return isa<LoadSDNode>(N) &&
cast<LoadSDNode>(N)->getExtensionType() == ISD::NON_EXTLOAD;
}
/// isEXTLoad - Returns true if the specified node is a EXTLOAD.
///
inline bool isEXTLoad(const SDNode *N) {
- return N->getOpcode() == ISD::LOAD &&
+ return isa<LoadSDNode>(N) &&
cast<LoadSDNode>(N)->getExtensionType() == ISD::EXTLOAD;
}
/// isSEXTLoad - Returns true if the specified node is a SEXTLOAD.
///
inline bool isSEXTLoad(const SDNode *N) {
- return N->getOpcode() == ISD::LOAD &&
+ return isa<LoadSDNode>(N) &&
cast<LoadSDNode>(N)->getExtensionType() == ISD::SEXTLOAD;
}
/// isZEXTLoad - Returns true if the specified node is a ZEXTLOAD.
///
inline bool isZEXTLoad(const SDNode *N) {
- return N->getOpcode() == ISD::LOAD &&
+ return isa<LoadSDNode>(N) &&
cast<LoadSDNode>(N)->getExtensionType() == ISD::ZEXTLOAD;
}
- /// isUNINDEXEDLoad - Returns true if the specified node is a unindexed load.
+ /// isUNINDEXEDLoad - Returns true if the specified node is an unindexed load.
///
inline bool isUNINDEXEDLoad(const SDNode *N) {
- return N->getOpcode() == ISD::LOAD &&
+ return isa<LoadSDNode>(N) &&
cast<LoadSDNode>(N)->getAddressingMode() == ISD::UNINDEXED;
}
+ /// isNormalStore - Returns true if the specified node is a non-truncating
+ /// and unindexed store.
+ inline bool isNormalStore(const SDNode *N) {
+ const StoreSDNode *St = dyn_cast<StoreSDNode>(N);
+ return St && !St->isTruncatingStore() &&
+ St->getAddressingMode() == ISD::UNINDEXED;
+ }
+
/// isNON_TRUNCStore - Returns true if the specified node is a non-truncating
/// store.
inline bool isNON_TRUNCStore(const SDNode *N) {
- return N->getOpcode() == ISD::STORE &&
- !cast<StoreSDNode>(N)->isTruncatingStore();
+ return isa<StoreSDNode>(N) && !cast<StoreSDNode>(N)->isTruncatingStore();
}
/// isTRUNCStore - Returns true if the specified node is a truncating
/// store.
inline bool isTRUNCStore(const SDNode *N) {
- return N->getOpcode() == ISD::STORE &&
- cast<StoreSDNode>(N)->isTruncatingStore();
+ return isa<StoreSDNode>(N) && cast<StoreSDNode>(N)->isTruncatingStore();
+ }
+
+ /// isUNINDEXEDStore - Returns true if the specified node is an
+ /// unindexed store.
+ inline bool isUNINDEXEDStore(const SDNode *N) {
+ return isa<StoreSDNode>(N) &&
+ cast<StoreSDNode>(N)->getAddressingMode() == ISD::UNINDEXED;
}
}
projects / oota-llvm.git / blobdiff