Ignore:
Timestamp:
Apr 19, 2011, 11:12:07 PM (14 years ago)
Author:
Yuri Dario
Message:

clamav: update trunk to 0.97.

Location:
clamav/trunk
Files:
2 edited

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  • clamav/trunk

  • TabularUnified clamav/trunk/libclamav/c++/llvm/include/llvm/CodeGen/SelectionDAGNodes.h

    r189 r319  
    2626#include "llvm/ADT/SmallVector.h"
    2727#include "llvm/ADT/STLExtras.h"
     28#include "llvm/CodeGen/ISDOpcodes.h"
    2829#include "llvm/CodeGen/ValueTypes.h"
    2930#include "llvm/CodeGen/MachineMemOperand.h"
    … …  
    4142class SDNode;
    4243class Value;
     44class MCSymbol;
    4345template <typename T> struct DenseMapInfo;
    4446template <typename T> struct simplify_type;
    … …  
    5658};
    5759
    58 /// ISD namespace - This namespace contains an enum which represents all of the
    59 /// SelectionDAG node types and value types.
    60 ///
    6160namespace ISD {
    62 
    63   //===--------------------------------------------------------------------===//
    64   /// ISD::NodeType enum - This enum defines the target-independent operators
    65   /// for a SelectionDAG.
    66   ///
    67   /// Targets may also define target-dependent operator codes for SDNodes. For
    68   /// example, on x86, these are the enum values in the X86ISD namespace.
    69   /// Targets should aim to use target-independent operators to model their
    70   /// instruction sets as much as possible, and only use target-dependent
    71   /// operators when they have special requirements.
    72   ///
    73   /// Finally, during and after selection proper, SNodes may use special
    74   /// operator codes that correspond directly with MachineInstr opcodes. These
    75   /// are used to represent selected instructions. See the isMachineOpcode()
    76   /// and getMachineOpcode() member functions of SDNode.
    77   ///
    78   enum NodeType {
    79     // DELETED_NODE - This is an illegal value that is used to catch
    80     // errors.  This opcode is not a legal opcode for any node.
    81     DELETED_NODE,
    82 
    83     // EntryToken - This is the marker used to indicate the start of the region.
    84     EntryToken,
    85 
    86     // TokenFactor - This node takes multiple tokens as input and produces a
    87     // single token result.  This is used to represent the fact that the operand
    88     // operators are independent of each other.
    89     TokenFactor,
    90 
    91     // AssertSext, AssertZext - These nodes record if a register contains a
    92     // value that has already been zero or sign extended from a narrower type.
    93     // These nodes take two operands.  The first is the node that has already
    94     // been extended, and the second is a value type node indicating the width
    95     // of the extension
    96     AssertSext, AssertZext,
    97 
    98     // Various leaf nodes.
    99     BasicBlock, VALUETYPE, CONDCODE, Register,
    100     Constant, ConstantFP,
    101     GlobalAddress, GlobalTLSAddress, FrameIndex,
    102     JumpTable, ConstantPool, ExternalSymbol, BlockAddress,
    103 
    104     // The address of the GOT
    105     GLOBAL_OFFSET_TABLE,
    106 
    107     // FRAMEADDR, RETURNADDR - These nodes represent llvm.frameaddress and
    108     // llvm.returnaddress on the DAG.  These nodes take one operand, the index
    109     // of the frame or return address to return.  An index of zero corresponds
    110     // to the current function's frame or return address, an index of one to the
    111     // parent's frame or return address, and so on.
    112     FRAMEADDR, RETURNADDR,
    113 
    114     // FRAME_TO_ARGS_OFFSET - This node represents offset from frame pointer to
    115     // first (possible) on-stack argument. This is needed for correct stack
    116     // adjustment during unwind.
    117     FRAME_TO_ARGS_OFFSET,
    118 
    119     // RESULT, OUTCHAIN = EXCEPTIONADDR(INCHAIN) - This node represents the
    120     // address of the exception block on entry to an landing pad block.
    121     EXCEPTIONADDR,
    122 
    123     // RESULT, OUTCHAIN = LSDAADDR(INCHAIN) - This node represents the
    124     // address of the Language Specific Data Area for the enclosing function.
    125     LSDAADDR,
    126 
    127     // RESULT, OUTCHAIN = EHSELECTION(INCHAIN, EXCEPTION) - This node represents
    128     // the selection index of the exception thrown.
    129     EHSELECTION,
    130 
    131     // OUTCHAIN = EH_RETURN(INCHAIN, OFFSET, HANDLER) - This node represents
    132     // 'eh_return' gcc dwarf builtin, which is used to return from
    133     // exception. The general meaning is: adjust stack by OFFSET and pass
    134     // execution to HANDLER. Many platform-related details also :)
    135     EH_RETURN,
    136 
    137     // TargetConstant* - Like Constant*, but the DAG does not do any folding or
    138     // simplification of the constant.
    139     TargetConstant,
    140     TargetConstantFP,
    141 
    142     // TargetGlobalAddress - Like GlobalAddress, but the DAG does no folding or
    143     // anything else with this node, and this is valid in the target-specific
    144     // dag, turning into a GlobalAddress operand.
    145     TargetGlobalAddress,
    146     TargetGlobalTLSAddress,
    147     TargetFrameIndex,
    148     TargetJumpTable,
    149     TargetConstantPool,
    150     TargetExternalSymbol,
    151     TargetBlockAddress,
    152 
    153     /// RESULT = INTRINSIC_WO_CHAIN(INTRINSICID, arg1, arg2, ...)
    154     /// This node represents a target intrinsic function with no side effects.
    155     /// The first operand is the ID number of the intrinsic from the
    156     /// llvm::Intrinsic namespace.  The operands to the intrinsic follow.  The
    157     /// node has returns the result of the intrinsic.
    158     INTRINSIC_WO_CHAIN,
    159 
    160     /// RESULT,OUTCHAIN = INTRINSIC_W_CHAIN(INCHAIN, INTRINSICID, arg1, ...)
    161     /// This node represents a target intrinsic function with side effects that
    162     /// returns a result.  The first operand is a chain pointer.  The second is
    163     /// the ID number of the intrinsic from the llvm::Intrinsic namespace.  The
    164     /// operands to the intrinsic follow.  The node has two results, the result
    165     /// of the intrinsic and an output chain.
    166     INTRINSIC_W_CHAIN,
    167 
    168     /// OUTCHAIN = INTRINSIC_VOID(INCHAIN, INTRINSICID, arg1, arg2, ...)
    169     /// This node represents a target intrinsic function with side effects that
    170     /// does not return a result.  The first operand is a chain pointer.  The
    171     /// second is the ID number of the intrinsic from the llvm::Intrinsic
    172     /// namespace.  The operands to the intrinsic follow.
    173     INTRINSIC_VOID,
    174 
    175     // CopyToReg - This node has three operands: a chain, a register number to
    176     // set to this value, and a value.
    177     CopyToReg,
    178 
    179     // CopyFromReg - This node indicates that the input value is a virtual or
    180     // physical register that is defined outside of the scope of this
    181     // SelectionDAG.  The register is available from the RegisterSDNode object.
    182     CopyFromReg,
    183 
    184     // UNDEF - An undefined node
    185     UNDEF,
    186 
    187     // EXTRACT_ELEMENT - This is used to get the lower or upper (determined by
    188     // a Constant, which is required to be operand #1) half of the integer or
    189     // float value specified as operand #0.  This is only for use before
    190     // legalization, for values that will be broken into multiple registers.
    191     EXTRACT_ELEMENT,
    192 
    193     // BUILD_PAIR - This is the opposite of EXTRACT_ELEMENT in some ways.  Given
    194     // two values of the same integer value type, this produces a value twice as
    195     // big.  Like EXTRACT_ELEMENT, this can only be used before legalization.
    196     BUILD_PAIR,
    197 
    198     // MERGE_VALUES - This node takes multiple discrete operands and returns
    199     // them all as its individual results.  This nodes has exactly the same
    200     // number of inputs and outputs. This node is useful for some pieces of the
    201     // code generator that want to think about a single node with multiple
    202     // results, not multiple nodes.
    203     MERGE_VALUES,
    204 
    205     // Simple integer binary arithmetic operators.
    206     ADD, SUB, MUL, SDIV, UDIV, SREM, UREM,
    207 
    208     // SMUL_LOHI/UMUL_LOHI - Multiply two integers of type iN, producing
    209     // a signed/unsigned value of type i[2*N], and return the full value as
    210     // two results, each of type iN.
    211     SMUL_LOHI, UMUL_LOHI,
    212 
    213     // SDIVREM/UDIVREM - Divide two integers and produce both a quotient and
    214     // remainder result.
    215     SDIVREM, UDIVREM,
    216 
    217     // CARRY_FALSE - This node is used when folding other nodes,
    218     // like ADDC/SUBC, which indicate the carry result is always false.
    219     CARRY_FALSE,
    220 
    221     // Carry-setting nodes for multiple precision addition and subtraction.
    222     // These nodes take two operands of the same value type, and produce two
    223     // results.  The first result is the normal add or sub result, the second
    224     // result is the carry flag result.
    225     ADDC, SUBC,
    226 
    227     // Carry-using nodes for multiple precision addition and subtraction.  These
    228     // nodes take three operands: The first two are the normal lhs and rhs to
    229     // the add or sub, and the third is the input carry flag.  These nodes
    230     // produce two results; the normal result of the add or sub, and the output
    231     // carry flag.  These nodes both read and write a carry flag to allow them
    232     // to them to be chained together for add and sub of arbitrarily large
    233     // values.
    234     ADDE, SUBE,
    235 
    236     // RESULT, BOOL = [SU]ADDO(LHS, RHS) - Overflow-aware nodes for addition.
    237     // These nodes take two operands: the normal LHS and RHS to the add. They
    238     // produce two results: the normal result of the add, and a boolean that
    239     // indicates if an overflow occured (*not* a flag, because it may be stored
    240     // to memory, etc.).  If the type of the boolean is not i1 then the high
    241     // bits conform to getBooleanContents.
    242     // These nodes are generated from the llvm.[su]add.with.overflow intrinsics.
    243     SADDO, UADDO,
    244 
    245     // Same for subtraction
    246     SSUBO, USUBO,
    247 
    248     // Same for multiplication
    249     SMULO, UMULO,
    250 
    251     // Simple binary floating point operators.
    252     FADD, FSUB, FMUL, FDIV, FREM,
    253 
    254     // FCOPYSIGN(X, Y) - Return the value of X with the sign of Y.  NOTE: This
    255     // DAG node does not require that X and Y have the same type, just that they
    256     // are both floating point.  X and the result must have the same type.
    257     // FCOPYSIGN(f32, f64) is allowed.
    258     FCOPYSIGN,
    259 
    260     // INT = FGETSIGN(FP) - Return the sign bit of the specified floating point
    261     // value as an integer 0/1 value.
    262     FGETSIGN,
    263 
    264     /// BUILD_VECTOR(ELT0, ELT1, ELT2, ELT3,...) - Return a vector with the
    265     /// specified, possibly variable, elements.  The number of elements is
    266     /// required to be a power of two.  The types of the operands must all be
    267     /// the same and must match the vector element type, except that integer
    268     /// types are allowed to be larger than the element type, in which case
    269     /// the operands are implicitly truncated.
    270     BUILD_VECTOR,
    271 
    272     /// INSERT_VECTOR_ELT(VECTOR, VAL, IDX) - Returns VECTOR with the element
    273     /// at IDX replaced with VAL.  If the type of VAL is larger than the vector
    274     /// element type then VAL is truncated before replacement.
    275     INSERT_VECTOR_ELT,
    276 
    277     /// EXTRACT_VECTOR_ELT(VECTOR, IDX) - Returns a single element from VECTOR
    278     /// identified by the (potentially variable) element number IDX.  If the
    279     /// return type is an integer type larger than the element type of the
    280     /// vector, the result is extended to the width of the return type.
    281     EXTRACT_VECTOR_ELT,
    282 
    283     /// CONCAT_VECTORS(VECTOR0, VECTOR1, ...) - Given a number of values of
    284     /// vector type with the same length and element type, this produces a
    285     /// concatenated vector result value, with length equal to the sum of the
    286     /// lengths of the input vectors.
    287     CONCAT_VECTORS,
    288 
    289     /// EXTRACT_SUBVECTOR(VECTOR, IDX) - Returns a subvector from VECTOR (an
    290     /// vector value) starting with the (potentially variable) element number
    291     /// IDX, which must be a multiple of the result vector length.
    292     EXTRACT_SUBVECTOR,
    293 
    294     /// VECTOR_SHUFFLE(VEC1, VEC2) - Returns a vector, of the same type as
    295     /// VEC1/VEC2.  A VECTOR_SHUFFLE node also contains an array of constant int
    296     /// values that indicate which value (or undef) each result element will
    297     /// get.  These constant ints are accessible through the
    298     /// ShuffleVectorSDNode class.  This is quite similar to the Altivec
    299     /// 'vperm' instruction, except that the indices must be constants and are
    300     /// in terms of the element size of VEC1/VEC2, not in terms of bytes.
    301     VECTOR_SHUFFLE,
    302 
    303     /// SCALAR_TO_VECTOR(VAL) - This represents the operation of loading a
    304     /// scalar value into element 0 of the resultant vector type.  The top
    305     /// elements 1 to N-1 of the N-element vector are undefined.  The type
    306     /// of the operand must match the vector element type, except when they
    307     /// are integer types.  In this case the operand is allowed to be wider
    308     /// than the vector element type, and is implicitly truncated to it.
    309     SCALAR_TO_VECTOR,
    310 
    311     // MULHU/MULHS - Multiply high - Multiply two integers of type iN, producing
    312     // an unsigned/signed value of type i[2*N], then return the top part.
    313     MULHU, MULHS,
    314 
    315     // Bitwise operators - logical and, logical or, logical xor, shift left,
    316     // shift right algebraic (shift in sign bits), shift right logical (shift in
    317     // zeroes), rotate left, rotate right, and byteswap.
    318     AND, OR, XOR, SHL, SRA, SRL, ROTL, ROTR, BSWAP,
    319 
    320     // Counting operators
    321     CTTZ, CTLZ, CTPOP,
    322 
    323     // Select(COND, TRUEVAL, FALSEVAL).  If the type of the boolean COND is not
    324     // i1 then the high bits must conform to getBooleanContents.
    325     SELECT,
    326 
    327     // Select with condition operator - This selects between a true value and
    328     // a false value (ops #2 and #3) based on the boolean result of comparing
    329     // the lhs and rhs (ops #0 and #1) of a conditional expression with the
    330     // condition code in op #4, a CondCodeSDNode.
    331     SELECT_CC,
    332 
    333     // SetCC operator - This evaluates to a true value iff the condition is
    334     // true.  If the result value type is not i1 then the high bits conform
    335     // to getBooleanContents.  The operands to this are the left and right
    336     // operands to compare (ops #0, and #1) and the condition code to compare
    337     // them with (op #2) as a CondCodeSDNode.
    338     SETCC,
    339 
    340     // RESULT = VSETCC(LHS, RHS, COND) operator - This evaluates to a vector of
    341     // integer elements with all bits of the result elements set to true if the
    342     // comparison is true or all cleared if the comparison is false.  The
    343     // operands to this are the left and right operands to compare (LHS/RHS) and
    344     // the condition code to compare them with (COND) as a CondCodeSDNode.
    345     VSETCC,
    346 
    347     // SHL_PARTS/SRA_PARTS/SRL_PARTS - These operators are used for expanded
    348     // integer shift operations, just like ADD/SUB_PARTS.  The operation
    349     // ordering is:
    350     //       [Lo,Hi] = op [LoLHS,HiLHS], Amt
    351     SHL_PARTS, SRA_PARTS, SRL_PARTS,
    352 
    353     // Conversion operators.  These are all single input single output
    354     // operations.  For all of these, the result type must be strictly
    355     // wider or narrower (depending on the operation) than the source
    356     // type.
    357 
    358     // SIGN_EXTEND - Used for integer types, replicating the sign bit
    359     // into new bits.
    360     SIGN_EXTEND,
    361 
    362     // ZERO_EXTEND - Used for integer types, zeroing the new bits.
    363     ZERO_EXTEND,
    364 
    365     // ANY_EXTEND - Used for integer types.  The high bits are undefined.
    366     ANY_EXTEND,
    367 
    368     // TRUNCATE - Completely drop the high bits.
    369     TRUNCATE,
    370 
    371     // [SU]INT_TO_FP - These operators convert integers (whose interpreted sign
    372     // depends on the first letter) to floating point.
    373     SINT_TO_FP,
    374     UINT_TO_FP,
    375 
    376     // SIGN_EXTEND_INREG - This operator atomically performs a SHL/SRA pair to
    377     // sign extend a small value in a large integer register (e.g. sign
    378     // extending the low 8 bits of a 32-bit register to fill the top 24 bits
    379     // with the 7th bit).  The size of the smaller type is indicated by the 1th
    380     // operand, a ValueType node.
    381     SIGN_EXTEND_INREG,
    382 
    383     /// FP_TO_[US]INT - Convert a floating point value to a signed or unsigned
    384     /// integer.
    385     FP_TO_SINT,
    386     FP_TO_UINT,
    387 
    388     /// X = FP_ROUND(Y, TRUNC) - Rounding 'Y' from a larger floating point type
    389     /// down to the precision of the destination VT.  TRUNC is a flag, which is
    390     /// always an integer that is zero or one.  If TRUNC is 0, this is a
    391     /// normal rounding, if it is 1, this FP_ROUND is known to not change the
    392     /// value of Y.
    393     ///
    394     /// The TRUNC = 1 case is used in cases where we know that the value will
    395     /// not be modified by the node, because Y is not using any of the extra
    396     /// precision of source type.  This allows certain transformations like
    397     /// FP_EXTEND(FP_ROUND(X,1)) -> X which are not safe for
    398     /// FP_EXTEND(FP_ROUND(X,0)) because the extra bits aren't removed.
    399     FP_ROUND,
    400 
    401     // FLT_ROUNDS_ - Returns current rounding mode:
    402     // -1 Undefined
    403     //  0 Round to 0
    404     //  1 Round to nearest
    405     //  2 Round to +inf
    406     //  3 Round to -inf
    407     FLT_ROUNDS_,
    408 
    409     /// X = FP_ROUND_INREG(Y, VT) - This operator takes an FP register, and
    410     /// rounds it to a floating point value.  It then promotes it and returns it
    411     /// in a register of the same size.  This operation effectively just
    412     /// discards excess precision.  The type to round down to is specified by
    413     /// the VT operand, a VTSDNode.
    414     FP_ROUND_INREG,
    415 
    416     /// X = FP_EXTEND(Y) - Extend a smaller FP type into a larger FP type.
    417     FP_EXTEND,
    418 
    419     // BIT_CONVERT - This operator converts between integer, vector and FP
    420     // values, as if the value was stored to memory with one type and loaded
    421     // from the same address with the other type (or equivalently for vector
    422     // format conversions, etc).  The source and result are required to have
    423     // the same bit size (e.g.  f32 <-> i32).  This can also be used for
    424     // int-to-int or fp-to-fp conversions, but that is a noop, deleted by
    425     // getNode().
    426     BIT_CONVERT,
    427 
    428     // CONVERT_RNDSAT - This operator is used to support various conversions
    429     // between various types (float, signed, unsigned and vectors of those
    430     // types) with rounding and saturation. NOTE: Avoid using this operator as
    431     // most target don't support it and the operator might be removed in the
    432     // future. It takes the following arguments:
    433     //   0) value
    434     //   1) dest type (type to convert to)
    435     //   2) src type (type to convert from)
    436     //   3) rounding imm
    437     //   4) saturation imm
    438     //   5) ISD::CvtCode indicating the type of conversion to do
    439     CONVERT_RNDSAT,
    440 
    441     // FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW,
    442     // FLOG, FLOG2, FLOG10, FEXP, FEXP2,
    443     // FCEIL, FTRUNC, FRINT, FNEARBYINT, FFLOOR - Perform various unary floating
    444     // point operations. These are inspired by libm.
    445     FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW,
    446     FLOG, FLOG2, FLOG10, FEXP, FEXP2,
    447     FCEIL, FTRUNC, FRINT, FNEARBYINT, FFLOOR,
    448 
    449     // LOAD and STORE have token chains as their first operand, then the same
    450     // operands as an LLVM load/store instruction, then an offset node that
    451     // is added / subtracted from the base pointer to form the address (for
    452     // indexed memory ops).
    453     LOAD, STORE,
    454 
    455     // DYNAMIC_STACKALLOC - Allocate some number of bytes on the stack aligned
    456     // to a specified boundary.  This node always has two return values: a new
    457     // stack pointer value and a chain. The first operand is the token chain,
    458     // the second is the number of bytes to allocate, and the third is the
    459     // alignment boundary.  The size is guaranteed to be a multiple of the stack
    460     // alignment, and the alignment is guaranteed to be bigger than the stack
    461     // alignment (if required) or 0 to get standard stack alignment.
    462     DYNAMIC_STACKALLOC,
    463 
    464     // Control flow instructions.  These all have token chains.
    465 
    466     // BR - Unconditional branch.  The first operand is the chain
    467     // operand, the second is the MBB to branch to.
    468     BR,
    469 
    470     // BRIND - Indirect branch.  The first operand is the chain, the second
    471     // is the value to branch to, which must be of the same type as the target's
    472     // pointer type.
    473     BRIND,
    474 
    475     // BR_JT - Jumptable branch. The first operand is the chain, the second
    476     // is the jumptable index, the last one is the jumptable entry index.
    477     BR_JT,
    478 
    479     // BRCOND - Conditional branch.  The first operand is the chain, the
    480     // second is the condition, the third is the block to branch to if the
    481     // condition is true.  If the type of the condition is not i1, then the
    482     // high bits must conform to getBooleanContents.
    483     BRCOND,
    484 
    485     // BR_CC - Conditional branch.  The behavior is like that of SELECT_CC, in
    486     // that the condition is represented as condition code, and two nodes to
    487     // compare, rather than as a combined SetCC node.  The operands in order are
    488     // chain, cc, lhs, rhs, block to branch to if condition is true.
    489     BR_CC,
    490 
    491     // INLINEASM - Represents an inline asm block.  This node always has two
    492     // return values: a chain and a flag result.  The inputs are as follows:
    493     //   Operand #0   : Input chain.
    494     //   Operand #1   : a ExternalSymbolSDNode with a pointer to the asm string.
    495     //   Operand #2n+2: A RegisterNode.
    496     //   Operand #2n+3: A TargetConstant, indicating if the reg is a use/def
    497     //   Operand #last: Optional, an incoming flag.
    498     INLINEASM,
    499 
    500     // EH_LABEL - Represents a label in mid basic block used to track
    501     // locations needed for debug and exception handling tables.  These nodes
    502     // take a chain as input and return a chain.
    503     EH_LABEL,
    504 
    505     // STACKSAVE - STACKSAVE has one operand, an input chain.  It produces a
    506     // value, the same type as the pointer type for the system, and an output
    507     // chain.
    508     STACKSAVE,
    509 
    510     // STACKRESTORE has two operands, an input chain and a pointer to restore to
    511     // it returns an output chain.
    512     STACKRESTORE,
    513 
    514     // CALLSEQ_START/CALLSEQ_END - These operators mark the beginning and end of
    515     // a call sequence, and carry arbitrary information that target might want
    516     // to know.  The first operand is a chain, the rest are specified by the
    517     // target and not touched by the DAG optimizers.
    518     // CALLSEQ_START..CALLSEQ_END pairs may not be nested.
    519     CALLSEQ_START,  // Beginning of a call sequence
    520     CALLSEQ_END,    // End of a call sequence
    521 
    522     // VAARG - VAARG has three operands: an input chain, a pointer, and a
    523     // SRCVALUE.  It returns a pair of values: the vaarg value and a new chain.
    524     VAARG,
    525 
    526     // VACOPY - VACOPY has five operands: an input chain, a destination pointer,
    527     // a source pointer, a SRCVALUE for the destination, and a SRCVALUE for the
    528     // source.
    529     VACOPY,
    530 
    531     // VAEND, VASTART - VAEND and VASTART have three operands: an input chain, a
    532     // pointer, and a SRCVALUE.
    533     VAEND, VASTART,
    534 
    535     // SRCVALUE - This is a node type that holds a Value* that is used to
    536     // make reference to a value in the LLVM IR.
    537     SRCVALUE,
    538 
    539     // PCMARKER - This corresponds to the pcmarker intrinsic.
    540     PCMARKER,
    541 
    542     // READCYCLECOUNTER - This corresponds to the readcyclecounter intrinsic.
    543     // The only operand is a chain and a value and a chain are produced.  The
    544     // value is the contents of the architecture specific cycle counter like
    545     // register (or other high accuracy low latency clock source)
    546     READCYCLECOUNTER,
    547 
    548     // HANDLENODE node - Used as a handle for various purposes.
    549     HANDLENODE,
    550 
    551     // TRAMPOLINE - This corresponds to the init_trampoline intrinsic.
    552     // It takes as input a token chain, the pointer to the trampoline,
    553     // the pointer to the nested function, the pointer to pass for the
    554     // 'nest' parameter, a SRCVALUE for the trampoline and another for
    555     // the nested function (allowing targets to access the original
    556     // Function*).  It produces the result of the intrinsic and a token
    557     // chain as output.
    558     TRAMPOLINE,
    559 
    560     // TRAP - Trapping instruction
    561     TRAP,
    562 
    563     // PREFETCH - This corresponds to a prefetch intrinsic. It takes chains are
    564     // their first operand. The other operands are the address to prefetch,
    565     // read / write specifier, and locality specifier.
    566     PREFETCH,
    567 
    568     // OUTCHAIN = MEMBARRIER(INCHAIN, load-load, load-store, store-load,
    569     //                       store-store, device)
    570     // This corresponds to the memory.barrier intrinsic.
    571     // it takes an input chain, 4 operands to specify the type of barrier, an
    572     // operand specifying if the barrier applies to device and uncached memory
    573     // and produces an output chain.
    574     MEMBARRIER,
    575 
    576     // Val, OUTCHAIN = ATOMIC_CMP_SWAP(INCHAIN, ptr, cmp, swap)
    577     // this corresponds to the atomic.lcs intrinsic.
    578     // cmp is compared to *ptr, and if equal, swap is stored in *ptr.
    579     // the return is always the original value in *ptr
    580     ATOMIC_CMP_SWAP,
    581 
    582     // Val, OUTCHAIN = ATOMIC_SWAP(INCHAIN, ptr, amt)
    583     // this corresponds to the atomic.swap intrinsic.
    584     // amt is stored to *ptr atomically.
    585     // the return is always the original value in *ptr
    586     ATOMIC_SWAP,
    587 
    588     // Val, OUTCHAIN = ATOMIC_LOAD_[OpName](INCHAIN, ptr, amt)
    589     // this corresponds to the atomic.load.[OpName] intrinsic.
    590     // op(*ptr, amt) is stored to *ptr atomically.
    591     // the return is always the original value in *ptr
    592     ATOMIC_LOAD_ADD,
    593     ATOMIC_LOAD_SUB,
    594     ATOMIC_LOAD_AND,
    595     ATOMIC_LOAD_OR,
    596     ATOMIC_LOAD_XOR,
    597     ATOMIC_LOAD_NAND,
    598     ATOMIC_LOAD_MIN,
    599     ATOMIC_LOAD_MAX,
    600     ATOMIC_LOAD_UMIN,
    601     ATOMIC_LOAD_UMAX,
    602 
    603     /// BUILTIN_OP_END - This must be the last enum value in this list.
    604     /// The target-specific pre-isel opcode values start here.
    605     BUILTIN_OP_END
    606   };
    607 
    608   /// FIRST_TARGET_MEMORY_OPCODE - Target-specific pre-isel operations
    609   /// which do not reference a specific memory location should be less than
    610   /// this value. Those that do must not be less than this value, and can
    611   /// be used with SelectionDAG::getMemIntrinsicNode.
    612   static const int FIRST_TARGET_MEMORY_OPCODE = BUILTIN_OP_END+80;
    613 
    61461  /// Node predicates
    61562
    … …  
    62673  /// element is not an undef.
    62774  bool isScalarToVector(const SDNode *N);
    628 
    629   //===--------------------------------------------------------------------===//
    630   /// MemIndexedMode enum - This enum defines the load / store indexed
    631   /// addressing modes.
    632   ///
    633   /// UNINDEXED    "Normal" load / store. The effective address is already
    634   ///              computed and is available in the base pointer. The offset
    635   ///              operand is always undefined. In addition to producing a
    636   ///              chain, an unindexed load produces one value (result of the
    637   ///              load); an unindexed store does not produce a value.
    638   ///
    639   /// PRE_INC      Similar to the unindexed mode where the effective address is
    640   /// PRE_DEC      the value of the base pointer add / subtract the offset.
    641   ///              It considers the computation as being folded into the load /
    642   ///              store operation (i.e. the load / store does the address
    643   ///              computation as well as performing the memory transaction).
    644   ///              The base operand is always undefined. In addition to
    645   ///              producing a chain, pre-indexed load produces two values
    646   ///              (result of the load and the result of the address
    647   ///              computation); a pre-indexed store produces one value (result
    648   ///              of the address computation).
    649   ///
    650   /// POST_INC     The effective address is the value of the base pointer. The
    651   /// POST_DEC     value of the offset operand is then added to / subtracted
    652   ///              from the base after memory transaction. In addition to
    653   ///              producing a chain, post-indexed load produces two values
    654   ///              (the result of the load and the result of the base +/- offset
    655   ///              computation); a post-indexed store produces one value (the
    656   ///              the result of the base +/- offset computation).
    657   ///
    658   enum MemIndexedMode {
    659     UNINDEXED = 0,
    660     PRE_INC,
    661     PRE_DEC,
    662     POST_INC,
    663     POST_DEC,
    664     LAST_INDEXED_MODE
    665   };
    666 
    667   //===--------------------------------------------------------------------===//
    668   /// LoadExtType enum - This enum defines the three variants of LOADEXT
    669   /// (load with extension).
    670   ///
    671   /// SEXTLOAD loads the integer operand and sign extends it to a larger
    672   ///          integer result type.
    673   /// ZEXTLOAD loads the integer operand and zero extends it to a larger
    674   ///          integer result type.
    675   /// EXTLOAD  is used for three things: floating point extending loads,
    676   ///          integer extending loads [the top bits are undefined], and vector
    677   ///          extending loads [load into low elt].
    678   ///
    679   enum LoadExtType {
    680     NON_EXTLOAD = 0,
    681     EXTLOAD,
    682     SEXTLOAD,
    683     ZEXTLOAD,
    684     LAST_LOADEXT_TYPE
    685   };
    686 
    687   //===--------------------------------------------------------------------===//
    688   /// ISD::CondCode enum - These are ordered carefully to make the bitfields
    689   /// below work out, when considering SETFALSE (something that never exists
    690   /// dynamically) as 0.  "U" -> Unsigned (for integer operands) or Unordered
    691   /// (for floating point), "L" -> Less than, "G" -> Greater than, "E" -> Equal
    692   /// to.  If the "N" column is 1, the result of the comparison is undefined if
    693   /// the input is a NAN.
    694   ///
    695   /// All of these (except for the 'always folded ops') should be handled for
    696   /// floating point.  For integer, only the SETEQ,SETNE,SETLT,SETLE,SETGT,
    697   /// SETGE,SETULT,SETULE,SETUGT, and SETUGE opcodes are used.
    698   ///
    699   /// Note that these are laid out in a specific order to allow bit-twiddling
    700   /// to transform conditions.
    701   enum CondCode {
    702     // Opcode          N U L G E       Intuitive operation
    703     SETFALSE,      //    0 0 0 0       Always false (always folded)
    704     SETOEQ,        //    0 0 0 1       True if ordered and equal
    705     SETOGT,        //    0 0 1 0       True if ordered and greater than
    706     SETOGE,        //    0 0 1 1       True if ordered and greater than or equal
    707     SETOLT,        //    0 1 0 0       True if ordered and less than
    708     SETOLE,        //    0 1 0 1       True if ordered and less than or equal
    709     SETONE,        //    0 1 1 0       True if ordered and operands are unequal
    710     SETO,          //    0 1 1 1       True if ordered (no nans)
    711     SETUO,         //    1 0 0 0       True if unordered: isnan(X) | isnan(Y)
    712     SETUEQ,        //    1 0 0 1       True if unordered or equal
    713     SETUGT,        //    1 0 1 0       True if unordered or greater than
    714     SETUGE,        //    1 0 1 1       True if unordered, greater than, or equal
    715     SETULT,        //    1 1 0 0       True if unordered or less than
    716     SETULE,        //    1 1 0 1       True if unordered, less than, or equal
    717     SETUNE,        //    1 1 1 0       True if unordered or not equal
    718     SETTRUE,       //    1 1 1 1       Always true (always folded)
    719     // Don't care operations: undefined if the input is a nan.
    720     SETFALSE2,     //  1 X 0 0 0       Always false (always folded)
    721     SETEQ,         //  1 X 0 0 1       True if equal
    722     SETGT,         //  1 X 0 1 0       True if greater than
    723     SETGE,         //  1 X 0 1 1       True if greater than or equal
    724     SETLT,         //  1 X 1 0 0       True if less than
    725     SETLE,         //  1 X 1 0 1       True if less than or equal
    726     SETNE,         //  1 X 1 1 0       True if not equal
    727     SETTRUE2,      //  1 X 1 1 1       Always true (always folded)
    728 
    729     SETCC_INVALID       // Marker value.
    730   };
    731 
    732   /// isSignedIntSetCC - Return true if this is a setcc instruction that
    733   /// performs a signed comparison when used with integer operands.
    734   inline bool isSignedIntSetCC(CondCode Code) {
    735     return Code == SETGT || Code == SETGE || Code == SETLT || Code == SETLE;
    736   }
    737 
    738   /// isUnsignedIntSetCC - Return true if this is a setcc instruction that
    739   /// performs an unsigned comparison when used with integer operands.
    740   inline bool isUnsignedIntSetCC(CondCode Code) {
    741     return Code == SETUGT || Code == SETUGE || Code == SETULT || Code == SETULE;
    742   }
    743 
    744   /// isTrueWhenEqual - Return true if the specified condition returns true if
    745   /// the two operands to the condition are equal.  Note that if one of the two
    746   /// operands is a NaN, this value is meaningless.
    747   inline bool isTrueWhenEqual(CondCode Cond) {
    748     return ((int)Cond & 1) != 0;
    749   }
    750 
    751   /// getUnorderedFlavor - This function returns 0 if the condition is always
    752   /// false if an operand is a NaN, 1 if the condition is always true if the
    753   /// operand is a NaN, and 2 if the condition is undefined if the operand is a
    754   /// NaN.
    755   inline unsigned getUnorderedFlavor(CondCode Cond) {
    756     return ((int)Cond >> 3) & 3;
    757   }
    758 
    759   /// getSetCCInverse - Return the operation corresponding to !(X op Y), where
    760   /// 'op' is a valid SetCC operation.
    761   CondCode getSetCCInverse(CondCode Operation, bool isInteger);
    762 
    763   /// getSetCCSwappedOperands - Return the operation corresponding to (Y op X)
    764   /// when given the operation for (X op Y).
    765   CondCode getSetCCSwappedOperands(CondCode Operation);
    766 
    767   /// getSetCCOrOperation - Return the result of a logical OR between different
    768   /// comparisons of identical values: ((X op1 Y) | (X op2 Y)).  This
    769   /// function returns SETCC_INVALID if it is not possible to represent the
    770   /// resultant comparison.
    771   CondCode getSetCCOrOperation(CondCode Op1, CondCode Op2, bool isInteger);
    772 
    773   /// getSetCCAndOperation - Return the result of a logical AND between
    774   /// different comparisons of identical values: ((X op1 Y) & (X op2 Y)).  This
    775   /// function returns SETCC_INVALID if it is not possible to represent the
    776   /// resultant comparison.
    777   CondCode getSetCCAndOperation(CondCode Op1, CondCode Op2, bool isInteger);
    778 
    779   //===--------------------------------------------------------------------===//
    780   /// CvtCode enum - This enum defines the various converts CONVERT_RNDSAT
    781   /// supports.
    782   enum CvtCode {
    783     CVT_FF,     // Float from Float
    784     CVT_FS,     // Float from Signed
    785     CVT_FU,     // Float from Unsigned
    786     CVT_SF,     // Signed from Float
    787     CVT_UF,     // Unsigned from Float
    788     CVT_SS,     // Signed from Signed
    789     CVT_SU,     // Signed from Unsigned
    790     CVT_US,     // Unsigned from Signed
    791     CVT_UU,     // Unsigned from Unsigned
    792     CVT_INVALID // Marker - Invalid opcode
    793   };
    794 }  // end llvm::ISD namespace
    795 
     75}  // end llvm:ISD namespace
    79676
    79777//===----------------------------------------------------------------------===//
    … …  
    1270550  }
    1271551
     552  /// getFlaggedUser - If this node has a flag value with a user, return
     553  /// the user (there is at most one). Otherwise return NULL.
     554  SDNode *getFlaggedUser() const {
     555    for (use_iterator UI = use_begin(), UE = use_end(); UI != UE; ++UI)
     556      if (UI.getUse().get().getValueType() == MVT::Flag)
     557        return *UI;
     558    return 0;
     559  }
     560
    1272561  /// getNumValues - Return the number of values defined/returned by this
    1273562  /// operator.
    … …  
    1384673  /// set later with InitOperands.
    1385674  SDNode(unsigned Opc, const DebugLoc dl, SDVTList VTs)
    1386     : NodeType(Opc), OperandsNeedDelete(false), SubclassData(0),
    1387       NodeId(-1), OperandList(0), ValueList(VTs.VTs), UseList(NULL),
    1388       NumOperands(0), NumValues(VTs.NumVTs),
     675    : NodeType(Opc), OperandsNeedDelete(false), HasDebugValue(false),
     676      SubclassData(0), NodeId(-1), OperandList(0), ValueList(VTs.VTs),
     677      UseList(NULL), NumOperands(0), NumValues(VTs.NumVTs),
    1389678      debugLoc(dl) {}
    1390679
    … …  
    1558847  // FIXME: Remove the "noinline" attribute once <rdar://problem/5852746> is
    1559848  // fixed.
    1560 #ifdef __GNUC__
     849#if __GNUC__==4 && __GNUC_MINOR__==2 && defined(__APPLE__) && !defined(__llvm__)
    1561850  explicit __attribute__((__noinline__)) HandleSDNode(SDValue X)
    1562851#else
    1563852  explicit HandleSDNode(SDValue X)
    1564853#endif
    1565     : SDNode(ISD::HANDLENODE, DebugLoc::getUnknownLoc(),
    1566              getSDVTList(MVT::Other)) {
     854    : SDNode(ISD::HANDLENODE, DebugLoc(), getSDVTList(MVT::Other)) {
    1567855    InitOperands(&Op, X);
    1568856  }
    … …  
    17951083  ConstantSDNode(bool isTarget, const ConstantInt *val, EVT VT)
    17961084    : SDNode(isTarget ? ISD::TargetConstant : ISD::Constant,
    1797              DebugLoc::getUnknownLoc(), getSDVTList(VT)), Value(val) {
     1085             DebugLoc(), getSDVTList(VT)), Value(val) {
    17981086  }
    17991087public:
    … …  
    18041092  int64_t getSExtValue() const { return Value->getSExtValue(); }
    18051093
     1094  bool isOne() const { return Value->isOne(); }
    18061095  bool isNullValue() const { return Value->isNullValue(); }
    18071096  bool isAllOnesValue() const { return Value->isAllOnesValue(); }
    … …  
    18191108  ConstantFPSDNode(bool isTarget, const ConstantFP *val, EVT VT)
    18201109    : SDNode(isTarget ? ISD::TargetConstantFP : ISD::ConstantFP,
    1821              DebugLoc::getUnknownLoc(), getSDVTList(VT)), Value(val) {
     1110             DebugLoc(), getSDVTList(VT)), Value(val) {
    18221111  }
    18231112public:
    … …  
    18521141  bool isExactlyValue(const APFloat& V) const;
    18531142
    1854   bool isValueValidForType(EVT VT, const APFloat& Val);
     1143  static bool isValueValidForType(EVT VT, const APFloat& Val);
    18551144
    18561145  static bool classof(const ConstantFPSDNode *) { return true; }
    … …  
    18621151
    18631152class GlobalAddressSDNode : public SDNode {
    1864   GlobalValue *TheGlobal;
     1153  const GlobalValue *TheGlobal;
    18651154  int64_t Offset;
    18661155  unsigned char TargetFlags;
    18671156  friend class SelectionDAG;
    1868   GlobalAddressSDNode(unsigned Opc, const GlobalValue *GA, EVT VT,
     1157  GlobalAddressSDNode(unsigned Opc, DebugLoc DL, const GlobalValue *GA, EVT VT,
    18691158                      int64_t o, unsigned char TargetFlags);
    18701159public:
    18711160
    1872   GlobalValue *getGlobal() const { return TheGlobal; }
     1161  const GlobalValue *getGlobal() const { return TheGlobal; }
    18731162  int64_t getOffset() const { return Offset; }
    18741163  unsigned char getTargetFlags() const { return TargetFlags; }
    … …  
    18901179  FrameIndexSDNode(int fi, EVT VT, bool isTarg)
    18911180    : SDNode(isTarg ? ISD::TargetFrameIndex : ISD::FrameIndex,
    1892       DebugLoc::getUnknownLoc(), getSDVTList(VT)), FI(fi) {
     1181      DebugLoc(), getSDVTList(VT)), FI(fi) {
    18931182  }
    18941183public:
    … …  
    19091198  JumpTableSDNode(int jti, EVT VT, bool isTarg, unsigned char TF)
    19101199    : SDNode(isTarg ? ISD::TargetJumpTable : ISD::JumpTable,
    1911       DebugLoc::getUnknownLoc(), getSDVTList(VT)), JTI(jti), TargetFlags(TF) {
     1200      DebugLoc(), getSDVTList(VT)), JTI(jti), TargetFlags(TF) {
    19121201  }
    19131202public:
    … …  
    19251214class ConstantPoolSDNode : public SDNode {
    19261215  union {
    1927     Constant *ConstVal;
     1216    const Constant *ConstVal;
    19281217    MachineConstantPoolValue *MachineCPVal;
    19291218  } Val;
    … …  
    19321221  unsigned char TargetFlags;
    19331222  friend class SelectionDAG;
    1934   ConstantPoolSDNode(bool isTarget, Constant *c, EVT VT, int o, unsigned Align,
    1935                      unsigned char TF)
     1223  ConstantPoolSDNode(bool isTarget, const Constant *c, EVT VT, int o,
     1224                     unsigned Align, unsigned char TF)
    19361225    : SDNode(isTarget ? ISD::TargetConstantPool : ISD::ConstantPool,
    1937              DebugLoc::getUnknownLoc(),
     1226             DebugLoc(),
    19381227             getSDVTList(VT)), Offset(o), Alignment(Align), TargetFlags(TF) {
    19391228    assert((int)Offset >= 0 && "Offset is too large");
    … …  
    19431232                     EVT VT, int o, unsigned Align, unsigned char TF)
    19441233    : SDNode(isTarget ? ISD::TargetConstantPool : ISD::ConstantPool,
    1945              DebugLoc::getUnknownLoc(),
     1234             DebugLoc(),
    19461235             getSDVTList(VT)), Offset(o), Alignment(Align), TargetFlags(TF) {
    19471236    assert((int)Offset >= 0 && "Offset is too large");
    … …  
    19561245  }
    19571246
    1958   Constant *getConstVal() const {
     1247  const Constant *getConstVal() const {
    19591248    assert(!isMachineConstantPoolEntry() && "Wrong constantpool type");
    19601249    return Val.ConstVal;
    … …  
    19911280  /// harder.  Let's see if we need it first.
    19921281  explicit BasicBlockSDNode(MachineBasicBlock *mbb)
    1993     : SDNode(ISD::BasicBlock, DebugLoc::getUnknownLoc(),
    1994              getSDVTList(MVT::Other)), MBB(mbb) {
     1282    : SDNode(ISD::BasicBlock, DebugLoc(), getSDVTList(MVT::Other)), MBB(mbb) {
    19951283  }
    19961284public:
    … …  
    20381326  /// Create a SrcValue for a general value.
    20391327  explicit SrcValueSDNode(const Value *v)
    2040     : SDNode(ISD::SRCVALUE, DebugLoc::getUnknownLoc(),
    2041              getSDVTList(MVT::Other)), V(v) {}
     1328    : SDNode(ISD::SRCVALUE, DebugLoc(), getSDVTList(MVT::Other)), V(v) {}
    20421329
    20431330public:
    … …  
    20501337  }
    20511338};
     1339 
     1340class MDNodeSDNode : public SDNode {
     1341  const MDNode *MD;
     1342  friend class SelectionDAG;
     1343  explicit MDNodeSDNode(const MDNode *md)
     1344  : SDNode(ISD::MDNODE_SDNODE, DebugLoc(), getSDVTList(MVT::Other)), MD(md) {}
     1345public:
     1346 
     1347  const MDNode *getMD() const { return MD; }
     1348 
     1349  static bool classof(const MDNodeSDNode *) { return true; }
     1350  static bool classof(const SDNode *N) {
     1351    return N->getOpcode() == ISD::MDNODE_SDNODE;
     1352  }
     1353};
    20521354
    20531355
    … …  
    20561358  friend class SelectionDAG;
    20571359  RegisterSDNode(unsigned reg, EVT VT)
    2058     : SDNode(ISD::Register, DebugLoc::getUnknownLoc(),
    2059              getSDVTList(VT)), Reg(reg) {
     1360    : SDNode(ISD::Register, DebugLoc(), getSDVTList(VT)), Reg(reg) {
    20601361  }
    20611362public:
    … …  
    20701371
    20711372class BlockAddressSDNode : public SDNode {
    2072   BlockAddress *BA;
     1373  const BlockAddress *BA;
    20731374  unsigned char TargetFlags;
    20741375  friend class SelectionDAG;
    2075   BlockAddressSDNode(unsigned NodeTy, EVT VT, BlockAddress *ba,
     1376  BlockAddressSDNode(unsigned NodeTy, EVT VT, const BlockAddress *ba,
    20761377                     unsigned char Flags)
    2077     : SDNode(NodeTy, DebugLoc::getUnknownLoc(), getSDVTList(VT)),
     1378    : SDNode(NodeTy, DebugLoc(), getSDVTList(VT)),
    20781379             BA(ba), TargetFlags(Flags) {
    20791380  }
    20801381public:
    2081   BlockAddress *getBlockAddress() const { return BA; }
     1382  const BlockAddress *getBlockAddress() const { return BA; }
    20821383  unsigned char getTargetFlags() const { return TargetFlags; }
    20831384
    … …  
    20891390};
    20901391
    2091 class LabelSDNode : public SDNode {
     1392class EHLabelSDNode : public SDNode {
    20921393  SDUse Chain;
    2093   unsigned LabelID;
    2094   friend class SelectionDAG;
    2095   LabelSDNode(unsigned NodeTy, DebugLoc dl, SDValue ch, unsigned id)
    2096     : SDNode(NodeTy, dl, getSDVTList(MVT::Other)), LabelID(id) {
     1394  MCSymbol *Label;
     1395  friend class SelectionDAG;
     1396  EHLabelSDNode(DebugLoc dl, SDValue ch, MCSymbol *L)
     1397    : SDNode(ISD::EH_LABEL, dl, getSDVTList(MVT::Other)), Label(L) {
    20971398    InitOperands(&Chain, ch);
    20981399  }
    20991400public:
    2100   unsigned getLabelID() const { return LabelID; }
    2101 
    2102   static bool classof(const LabelSDNode *) { return true; }
     1401  MCSymbol *getLabel() const { return Label; }
     1402
     1403  static bool classof(const EHLabelSDNode *) { return true; }
    21031404  static bool classof(const SDNode *N) {
    21041405    return N->getOpcode() == ISD::EH_LABEL;
    … …  
    21131414  ExternalSymbolSDNode(bool isTarget, const char *Sym, unsigned char TF, EVT VT)
    21141415    : SDNode(isTarget ? ISD::TargetExternalSymbol : ISD::ExternalSymbol,
    2115              DebugLoc::getUnknownLoc(),
    2116              getSDVTList(VT)), Symbol(Sym), TargetFlags(TF) {
     1416             DebugLoc(), getSDVTList(VT)), Symbol(Sym), TargetFlags(TF) {
    21171417  }
    21181418public:
    … …  
    21321432  friend class SelectionDAG;
    21331433  explicit CondCodeSDNode(ISD::CondCode Cond)
    2134     : SDNode(ISD::CONDCODE, DebugLoc::getUnknownLoc(),
    2135              getSDVTList(MVT::Other)), Condition(Cond) {
     1434    : SDNode(ISD::CONDCODE, DebugLoc(), getSDVTList(MVT::Other)),
     1435      Condition(Cond) {
    21361436  }
    21371437public:
    … …  
    21651465};
    21661466
    2167 namespace ISD {
    2168   struct ArgFlagsTy {
    2169   private:
    2170     static const uint64_t NoFlagSet      = 0ULL;
    2171     static const uint64_t ZExt           = 1ULL<<0;  ///< Zero extended
    2172     static const uint64_t ZExtOffs       = 0;
    2173     static const uint64_t SExt           = 1ULL<<1;  ///< Sign extended
    2174     static const uint64_t SExtOffs       = 1;
    2175     static const uint64_t InReg          = 1ULL<<2;  ///< Passed in register
    2176     static const uint64_t InRegOffs      = 2;
    2177     static const uint64_t SRet           = 1ULL<<3;  ///< Hidden struct-ret ptr
    2178     static const uint64_t SRetOffs       = 3;
    2179     static const uint64_t ByVal          = 1ULL<<4;  ///< Struct passed by value
    2180     static const uint64_t ByValOffs      = 4;
    2181     static const uint64_t Nest           = 1ULL<<5;  ///< Nested fn static chain
    2182     static const uint64_t NestOffs       = 5;
    2183     static const uint64_t ByValAlign     = 0xFULL << 6; //< Struct alignment
    2184     static const uint64_t ByValAlignOffs = 6;
    2185     static const uint64_t Split          = 1ULL << 10;
    2186     static const uint64_t SplitOffs      = 10;
    2187     static const uint64_t OrigAlign      = 0x1FULL<<27;
    2188     static const uint64_t OrigAlignOffs  = 27;
    2189     static const uint64_t ByValSize      = 0xffffffffULL << 32; //< Struct size
    2190     static const uint64_t ByValSizeOffs  = 32;
    2191 
    2192     static const uint64_t One            = 1ULL; //< 1 of this type, for shifts
    2193 
    2194     uint64_t Flags;
    2195   public:
    2196     ArgFlagsTy() : Flags(0) { }
    2197 
    2198     bool isZExt()   const { return Flags & ZExt; }
    2199     void setZExt()  { Flags |= One << ZExtOffs; }
    2200 
    2201     bool isSExt()   const { return Flags & SExt; }
    2202     void setSExt()  { Flags |= One << SExtOffs; }
    2203 
    2204     bool isInReg()  const { return Flags & InReg; }
    2205     void setInReg() { Flags |= One << InRegOffs; }
    2206 
    2207     bool isSRet()   const { return Flags & SRet; }
    2208     void setSRet()  { Flags |= One << SRetOffs; }
    2209 
    2210     bool isByVal()  const { return Flags & ByVal; }
    2211     void setByVal() { Flags |= One << ByValOffs; }
    2212 
    2213     bool isNest()   const { return Flags & Nest; }
    2214     void setNest()  { Flags |= One << NestOffs; }
    2215 
    2216     unsigned getByValAlign() const {
    2217       return (unsigned)
    2218         ((One << ((Flags & ByValAlign) >> ByValAlignOffs)) / 2);
    2219     }
    2220     void setByValAlign(unsigned A) {
    2221       Flags = (Flags & ~ByValAlign) |
    2222         (uint64_t(Log2_32(A) + 1) << ByValAlignOffs);
    2223     }
    2224 
    2225     bool isSplit()   const { return Flags & Split; }
    2226     void setSplit()  { Flags |= One << SplitOffs; }
    2227 
    2228     unsigned getOrigAlign() const {
    2229       return (unsigned)
    2230         ((One << ((Flags & OrigAlign) >> OrigAlignOffs)) / 2);
    2231     }
    2232     void setOrigAlign(unsigned A) {
    2233       Flags = (Flags & ~OrigAlign) |
    2234         (uint64_t(Log2_32(A) + 1) << OrigAlignOffs);
    2235     }
    2236 
    2237     unsigned getByValSize() const {
    2238       return (unsigned)((Flags & ByValSize) >> ByValSizeOffs);
    2239     }
    2240     void setByValSize(unsigned S) {
    2241       Flags = (Flags & ~ByValSize) | (uint64_t(S) << ByValSizeOffs);
    2242     }
    2243 
    2244     /// getArgFlagsString - Returns the flags as a string, eg: "zext align:4".
    2245     std::string getArgFlagsString();
    2246 
    2247     /// getRawBits - Represent the flags as a bunch of bits.
    2248     uint64_t getRawBits() const { return Flags; }
    2249   };
    2250 
    2251   /// InputArg - This struct carries flags and type information about a
    2252   /// single incoming (formal) argument or incoming (from the perspective
    2253   /// of the caller) return value virtual register.
    2254   ///
    2255   struct InputArg {
    2256     ArgFlagsTy Flags;
    2257     EVT VT;
    2258     bool Used;
    2259 
    2260     InputArg() : VT(MVT::Other), Used(false) {}
    2261     InputArg(ISD::ArgFlagsTy flags, EVT vt, bool used)
    2262       : Flags(flags), VT(vt), Used(used) {
    2263       assert(VT.isSimple() &&
    2264              "InputArg value type must be Simple!");
    2265     }
    2266   };
    2267 
    2268   /// OutputArg - This struct carries flags and a value for a
    2269   /// single outgoing (actual) argument or outgoing (from the perspective
    2270   /// of the caller) return value virtual register.
    2271   ///
    2272   struct OutputArg {
    2273     ArgFlagsTy Flags;
    2274     SDValue Val;
    2275     bool IsFixed;
    2276 
    2277     OutputArg() : IsFixed(false) {}
    2278     OutputArg(ISD::ArgFlagsTy flags, SDValue val, bool isfixed)
    2279       : Flags(flags), Val(val), IsFixed(isfixed) {
    2280       assert(Val.getValueType().isSimple() &&
    2281              "OutputArg value type must be Simple!");
    2282     }
    2283   };
    2284 }
    2285 
    22861467/// VTSDNode - This class is used to represent EVT's, which are used
    22871468/// to parameterize some operations.
    … …  
    22901471  friend class SelectionDAG;
    22911472  explicit VTSDNode(EVT VT)
    2292     : SDNode(ISD::VALUETYPE, DebugLoc::getUnknownLoc(),
    2293              getSDVTList(MVT::Other)), ValueType(VT) {
     1473    : SDNode(ISD::VALUETYPE, DebugLoc(), getSDVTList(MVT::Other)),
     1474      ValueType(VT) {
    22941475  }
    22951476public:
    … …  
    25871768}
    25881769
    2589 
    25901770} // end llvm namespace
    25911771
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