You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
819 lines
36 KiB
819 lines
36 KiB
//===-- llvm/CodeGen/ISDOpcodes.h - CodeGen opcodes -------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares codegen opcodes and related utilities.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_ISDOPCODES_H
|
|
#define LLVM_CODEGEN_ISDOPCODES_H
|
|
|
|
namespace llvm {
|
|
|
|
/// ISD namespace - This namespace contains an enum which represents all of the
|
|
/// SelectionDAG node types and value types.
|
|
///
|
|
namespace ISD {
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
/// ISD::NodeType enum - This enum defines the target-independent operators
|
|
/// for a SelectionDAG.
|
|
///
|
|
/// Targets may also define target-dependent operator codes for SDNodes. For
|
|
/// example, on x86, these are the enum values in the X86ISD namespace.
|
|
/// Targets should aim to use target-independent operators to model their
|
|
/// instruction sets as much as possible, and only use target-dependent
|
|
/// operators when they have special requirements.
|
|
///
|
|
/// Finally, during and after selection proper, SNodes may use special
|
|
/// operator codes that correspond directly with MachineInstr opcodes. These
|
|
/// are used to represent selected instructions. See the isMachineOpcode()
|
|
/// and getMachineOpcode() member functions of SDNode.
|
|
///
|
|
enum NodeType {
|
|
/// DELETED_NODE - This is an illegal value that is used to catch
|
|
/// errors. This opcode is not a legal opcode for any node.
|
|
DELETED_NODE,
|
|
|
|
/// EntryToken - This is the marker used to indicate the start of a region.
|
|
EntryToken,
|
|
|
|
/// TokenFactor - This node takes multiple tokens as input and produces a
|
|
/// single token result. This is used to represent the fact that the operand
|
|
/// operators are independent of each other.
|
|
TokenFactor,
|
|
|
|
/// AssertSext, AssertZext - These nodes record if a register contains a
|
|
/// value that has already been zero or sign extended from a narrower type.
|
|
/// These nodes take two operands. The first is the node that has already
|
|
/// been extended, and the second is a value type node indicating the width
|
|
/// of the extension
|
|
AssertSext, AssertZext,
|
|
|
|
/// Various leaf nodes.
|
|
BasicBlock, VALUETYPE, CONDCODE, Register, RegisterMask,
|
|
Constant, ConstantFP,
|
|
GlobalAddress, GlobalTLSAddress, FrameIndex,
|
|
JumpTable, ConstantPool, ExternalSymbol, BlockAddress,
|
|
|
|
/// The address of the GOT
|
|
GLOBAL_OFFSET_TABLE,
|
|
|
|
/// FRAMEADDR, RETURNADDR - These nodes represent llvm.frameaddress and
|
|
/// llvm.returnaddress on the DAG. These nodes take one operand, the index
|
|
/// of the frame or return address to return. An index of zero corresponds
|
|
/// to the current function's frame or return address, an index of one to
|
|
/// the parent's frame or return address, and so on.
|
|
FRAMEADDR, RETURNADDR,
|
|
|
|
/// FRAME_TO_ARGS_OFFSET - This node represents offset from frame pointer to
|
|
/// first (possible) on-stack argument. This is needed for correct stack
|
|
/// adjustment during unwind.
|
|
FRAME_TO_ARGS_OFFSET,
|
|
|
|
/// RESULT, OUTCHAIN = EXCEPTIONADDR(INCHAIN) - This node represents the
|
|
/// address of the exception block on entry to an landing pad block.
|
|
EXCEPTIONADDR,
|
|
|
|
/// RESULT, OUTCHAIN = LSDAADDR(INCHAIN) - This node represents the
|
|
/// address of the Language Specific Data Area for the enclosing function.
|
|
LSDAADDR,
|
|
|
|
/// RESULT, OUTCHAIN = EHSELECTION(INCHAIN, EXCEPTION) - This node
|
|
/// represents the selection index of the exception thrown.
|
|
EHSELECTION,
|
|
|
|
/// OUTCHAIN = EH_RETURN(INCHAIN, OFFSET, HANDLER) - This node represents
|
|
/// 'eh_return' gcc dwarf builtin, which is used to return from
|
|
/// exception. The general meaning is: adjust stack by OFFSET and pass
|
|
/// execution to HANDLER. Many platform-related details also :)
|
|
EH_RETURN,
|
|
|
|
/// RESULT, OUTCHAIN = EH_SJLJ_SETJMP(INCHAIN, buffer)
|
|
/// This corresponds to the eh.sjlj.setjmp intrinsic.
|
|
/// It takes an input chain and a pointer to the jump buffer as inputs
|
|
/// and returns an outchain.
|
|
EH_SJLJ_SETJMP,
|
|
|
|
/// OUTCHAIN = EH_SJLJ_LONGJMP(INCHAIN, buffer)
|
|
/// This corresponds to the eh.sjlj.longjmp intrinsic.
|
|
/// It takes an input chain and a pointer to the jump buffer as inputs
|
|
/// and returns an outchain.
|
|
EH_SJLJ_LONGJMP,
|
|
|
|
/// TargetConstant* - Like Constant*, but the DAG does not do any folding,
|
|
/// simplification, or lowering of the constant. They are used for constants
|
|
/// which are known to fit in the immediate fields of their users, or for
|
|
/// carrying magic numbers which are not values which need to be
|
|
/// materialized in registers.
|
|
TargetConstant,
|
|
TargetConstantFP,
|
|
|
|
/// TargetGlobalAddress - Like GlobalAddress, but the DAG does no folding or
|
|
/// anything else with this node, and this is valid in the target-specific
|
|
/// dag, turning into a GlobalAddress operand.
|
|
TargetGlobalAddress,
|
|
TargetGlobalTLSAddress,
|
|
TargetFrameIndex,
|
|
TargetJumpTable,
|
|
TargetConstantPool,
|
|
TargetExternalSymbol,
|
|
TargetBlockAddress,
|
|
|
|
/// TargetIndex - Like a constant pool entry, but with completely
|
|
/// target-dependent semantics. Holds target flags, a 32-bit index, and a
|
|
/// 64-bit index. Targets can use this however they like.
|
|
TargetIndex,
|
|
|
|
/// RESULT = INTRINSIC_WO_CHAIN(INTRINSICID, arg1, arg2, ...)
|
|
/// This node represents a target intrinsic function with no side effects.
|
|
/// The first operand is the ID number of the intrinsic from the
|
|
/// llvm::Intrinsic namespace. The operands to the intrinsic follow. The
|
|
/// node returns the result of the intrinsic.
|
|
INTRINSIC_WO_CHAIN,
|
|
|
|
/// RESULT,OUTCHAIN = INTRINSIC_W_CHAIN(INCHAIN, INTRINSICID, arg1, ...)
|
|
/// This node represents a target intrinsic function with side effects that
|
|
/// returns a result. The first operand is a chain pointer. The second is
|
|
/// the ID number of the intrinsic from the llvm::Intrinsic namespace. The
|
|
/// operands to the intrinsic follow. The node has two results, the result
|
|
/// of the intrinsic and an output chain.
|
|
INTRINSIC_W_CHAIN,
|
|
|
|
/// OUTCHAIN = INTRINSIC_VOID(INCHAIN, INTRINSICID, arg1, arg2, ...)
|
|
/// This node represents a target intrinsic function with side effects that
|
|
/// does not return a result. The first operand is a chain pointer. The
|
|
/// second is the ID number of the intrinsic from the llvm::Intrinsic
|
|
/// namespace. The operands to the intrinsic follow.
|
|
INTRINSIC_VOID,
|
|
|
|
/// CopyToReg - This node has three operands: a chain, a register number to
|
|
/// set to this value, and a value.
|
|
CopyToReg,
|
|
|
|
/// 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 RegisterSDNode object.
|
|
CopyFromReg,
|
|
|
|
/// UNDEF - An undefined node.
|
|
UNDEF,
|
|
|
|
/// 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. This node is useful for some pieces of the
|
|
/// code generator that want to think about a single node with multiple
|
|
/// results, not multiple nodes.
|
|
MERGE_VALUES,
|
|
|
|
/// Simple integer binary arithmetic operators.
|
|
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
|
|
/// two results, each of type iN.
|
|
SMUL_LOHI, UMUL_LOHI,
|
|
|
|
/// SDIVREM/UDIVREM - Divide two integers and produce both a quotient and
|
|
/// remainder result.
|
|
SDIVREM, UDIVREM,
|
|
|
|
/// CARRY_FALSE - This node is used when folding other nodes,
|
|
/// like ADDC/SUBC, which indicate the carry result is always false.
|
|
CARRY_FALSE,
|
|
|
|
/// Carry-setting nodes for multiple precision addition and subtraction.
|
|
/// These nodes take two operands of the same value type, and produce two
|
|
/// results. The first result is the normal add or sub result, the second
|
|
/// result is the carry flag result.
|
|
ADDC, SUBC,
|
|
|
|
/// Carry-using nodes for multiple precision addition and subtraction. These
|
|
/// nodes take three operands: The first two are the normal lhs and rhs to
|
|
/// the add or sub, and the third is the input carry flag. These nodes
|
|
/// produce two results; the normal result of the add or sub, and the output
|
|
/// carry flag. These nodes both read and write a carry flag to allow them
|
|
/// to them to be chained together for add and sub of arbitrarily large
|
|
/// values.
|
|
ADDE, SUBE,
|
|
|
|
/// RESULT, BOOL = [SU]ADDO(LHS, RHS) - Overflow-aware nodes for addition.
|
|
/// These nodes take two operands: the normal LHS and RHS to the add. They
|
|
/// produce two results: the normal result of the add, and a boolean that
|
|
/// indicates if an overflow occurred (*not* a flag, because it may be store
|
|
/// to memory, etc.). If the type of the boolean is not i1 then the high
|
|
/// bits conform to getBooleanContents.
|
|
/// These nodes are generated from llvm.[su]add.with.overflow intrinsics.
|
|
SADDO, UADDO,
|
|
|
|
/// Same for subtraction.
|
|
SSUBO, USUBO,
|
|
|
|
/// Same for multiplication.
|
|
SMULO, UMULO,
|
|
|
|
/// Simple binary floating point operators.
|
|
FADD, FSUB, FMUL, FMA, FDIV, FREM,
|
|
|
|
/// FCOPYSIGN(X, Y) - Return the value of X with the sign of Y. NOTE: This
|
|
/// DAG node does not require that X and Y have the same type, just that the
|
|
/// are both floating point. X and the result must have the same type.
|
|
/// 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. The types of the operands must all be
|
|
/// the same and must match the vector element type, except that integer
|
|
/// types are allowed to be larger than the element type, in which case
|
|
/// the operands are implicitly truncated.
|
|
BUILD_VECTOR,
|
|
|
|
/// INSERT_VECTOR_ELT(VECTOR, VAL, IDX) - Returns VECTOR with the element
|
|
/// 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
|
|
/// identified by the (potentially variable) element number IDX. If the
|
|
/// return type is an integer type larger than the element type of the
|
|
/// vector, the result is extended to the width of the return type.
|
|
EXTRACT_VECTOR_ELT,
|
|
|
|
/// CONCAT_VECTORS(VECTOR0, VECTOR1, ...) - Given a number of values of
|
|
/// vector type with the same length and element type, this produces a
|
|
/// concatenated vector result value, with length equal to the sum of the
|
|
/// lengths of the input vectors.
|
|
CONCAT_VECTORS,
|
|
|
|
/// INSERT_SUBVECTOR(VECTOR1, VECTOR2, IDX) - Returns a vector
|
|
/// with VECTOR2 inserted into VECTOR1 at the (potentially
|
|
/// variable) element number IDX, which must be a multiple of the
|
|
/// VECTOR2 vector length. The elements of VECTOR1 starting at
|
|
/// IDX are overwritten with VECTOR2. Elements IDX through
|
|
/// vector_length(VECTOR2) must be valid VECTOR1 indices.
|
|
INSERT_SUBVECTOR,
|
|
|
|
/// EXTRACT_SUBVECTOR(VECTOR, IDX) - Returns a subvector from VECTOR (an
|
|
/// vector value) starting with the element number IDX, which must be a
|
|
/// constant multiple of the result vector length.
|
|
EXTRACT_SUBVECTOR,
|
|
|
|
/// VECTOR_SHUFFLE(VEC1, VEC2) - Returns a vector, of the same type as
|
|
/// VEC1/VEC2. A VECTOR_SHUFFLE node also contains an array of constant int
|
|
/// values that indicate which value (or undef) each result element will
|
|
/// get. These constant ints are accessible through the
|
|
/// ShuffleVectorSDNode class. This is quite similar to the Altivec
|
|
/// 'vperm' instruction, except that the indices must be constants and are
|
|
/// in terms of the element size of VEC1/VEC2, not in terms of bytes.
|
|
VECTOR_SHUFFLE,
|
|
|
|
/// SCALAR_TO_VECTOR(VAL) - This represents the operation of loading a
|
|
/// scalar value into element 0 of the resultant vector type. The top
|
|
/// elements 1 to N-1 of the N-element vector are undefined. The type
|
|
/// of the operand must match the vector element type, except when they
|
|
/// are integer types. In this case the operand is allowed to be wider
|
|
/// than the vector element type, and is implicitly truncated to it.
|
|
SCALAR_TO_VECTOR,
|
|
|
|
/// 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.
|
|
MULHU, MULHS,
|
|
|
|
/// Bitwise operators - logical and, logical or, logical xor.
|
|
AND, OR, XOR,
|
|
|
|
/// Shift and rotation operations. After legalization, the type of the
|
|
/// shift amount is known to be TLI.getShiftAmountTy(). Before legalization
|
|
/// the shift amount can be any type, but care must be taken to ensure it is
|
|
/// large enough. TLI.getShiftAmountTy() is i8 on some targets, but before
|
|
/// legalization, types like i1024 can occur and i8 doesn't have enough bits
|
|
/// to represent the shift amount.
|
|
/// When the 1st operand is a vector, the shift amount must be in the same
|
|
/// type. (TLI.getShiftAmountTy() will return the same type when the input
|
|
/// type is a vector.)
|
|
SHL, SRA, SRL, ROTL, ROTR,
|
|
|
|
/// Byte Swap and Counting operators.
|
|
BSWAP, CTTZ, CTLZ, CTPOP,
|
|
|
|
/// Bit counting operators with an undefined result for zero inputs.
|
|
CTTZ_ZERO_UNDEF, CTLZ_ZERO_UNDEF,
|
|
|
|
/// Select(COND, TRUEVAL, FALSEVAL). If the type of the boolean COND is not
|
|
/// i1 then the high bits must conform to getBooleanContents.
|
|
SELECT,
|
|
|
|
/// Select with a vector condition (op #0) and two vector operands (ops #1
|
|
/// and #2), returning a vector result. All vectors have the same length.
|
|
/// Much like the scalar select and setcc, each bit in the condition selects
|
|
/// whether the corresponding result element is taken from op #1 or op #2.
|
|
/// At first, the VSELECT condition is of vXi1 type. Later, targets may
|
|
/// change the condition type in order to match the VSELECT node using a
|
|
/// pattern. The condition follows the BooleanContent format of the target.
|
|
VSELECT,
|
|
|
|
/// Select with condition operator - This selects between a true value and
|
|
/// a false value (ops #2 and #3) based on the boolean result of comparing
|
|
/// the lhs and rhs (ops #0 and #1) of a conditional expression with the
|
|
/// condition code in op #4, a CondCodeSDNode.
|
|
SELECT_CC,
|
|
|
|
/// SetCC operator - This evaluates to a true value iff the condition is
|
|
/// true. If the result value type is not i1 then the high bits conform
|
|
/// to getBooleanContents. 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. If the operands are vector types
|
|
/// then the result type must also be a vector type.
|
|
SETCC,
|
|
|
|
/// SHL_PARTS/SRA_PARTS/SRL_PARTS - These operators are used for expanded
|
|
/// integer shift operations, just like ADD/SUB_PARTS. The operation
|
|
/// ordering is:
|
|
/// [Lo,Hi] = op [LoLHS,HiLHS], Amt
|
|
SHL_PARTS, SRA_PARTS, SRL_PARTS,
|
|
|
|
/// Conversion operators. These are all single input single output
|
|
/// operations. For all of these, the result type must be strictly
|
|
/// wider or narrower (depending on the operation) than the source
|
|
/// type.
|
|
|
|
/// SIGN_EXTEND - Used for integer types, replicating the sign bit
|
|
/// into new bits.
|
|
SIGN_EXTEND,
|
|
|
|
/// ZERO_EXTEND - Used for integer types, zeroing the new bits.
|
|
ZERO_EXTEND,
|
|
|
|
/// ANY_EXTEND - Used for integer types. The high bits are undefined.
|
|
ANY_EXTEND,
|
|
|
|
/// TRUNCATE - Completely drop the high bits.
|
|
TRUNCATE,
|
|
|
|
/// [SU]INT_TO_FP - These operators convert integers (whose interpreted sign
|
|
/// depends on the first letter) to floating point.
|
|
SINT_TO_FP,
|
|
UINT_TO_FP,
|
|
|
|
/// SIGN_EXTEND_INREG - This operator atomically performs a SHL/SRA pair to
|
|
/// sign extend a small value in a large integer register (e.g. sign
|
|
/// extending the low 8 bits of a 32-bit register to fill the top 24 bits
|
|
/// with the 7th bit). The size of the smaller type is indicated by the 1th
|
|
/// operand, a ValueType node.
|
|
SIGN_EXTEND_INREG,
|
|
|
|
/// FP_TO_[US]INT - Convert a floating point value to a signed or unsigned
|
|
/// integer.
|
|
FP_TO_SINT,
|
|
FP_TO_UINT,
|
|
|
|
/// 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,
|
|
|
|
/// 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,
|
|
|
|
/// X = FP_EXTEND(Y) - Extend a smaller FP type into a larger FP type.
|
|
FP_EXTEND,
|
|
|
|
/// BITCAST - This operator converts between integer, vector and FP
|
|
/// values, as if the value was stored to memory with one type and loaded
|
|
/// from the same address with the other type (or equivalently for vector
|
|
/// format conversions, etc). The source and result are required to have
|
|
/// the same bit size (e.g. f32 <-> i32). This can also be used for
|
|
/// int-to-int or fp-to-fp conversions, but that is a noop, deleted by
|
|
/// getNode().
|
|
BITCAST,
|
|
|
|
/// CONVERT_RNDSAT - This operator is used to support various conversions
|
|
/// between various types (float, signed, unsigned and vectors of those
|
|
/// types) with rounding and saturation. NOTE: Avoid using this operator as
|
|
/// most target don't support it and the operator might be removed in the
|
|
/// future. It takes the following arguments:
|
|
/// 0) value
|
|
/// 1) dest type (type to convert to)
|
|
/// 2) src type (type to convert from)
|
|
/// 3) rounding imm
|
|
/// 4) saturation imm
|
|
/// 5) ISD::CvtCode indicating the type of conversion to do
|
|
CONVERT_RNDSAT,
|
|
|
|
/// FP16_TO_FP32, FP32_TO_FP16 - These operators are used to perform
|
|
/// promotions and truncation for half-precision (16 bit) floating
|
|
/// numbers. We need special nodes since FP16 is a storage-only type with
|
|
/// special semantics of operations.
|
|
FP16_TO_FP32, FP32_TO_FP16,
|
|
|
|
/// FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW,
|
|
/// FLOG, FLOG2, FLOG10, FEXP, FEXP2,
|
|
/// FCEIL, FTRUNC, FRINT, FNEARBYINT, FFLOOR - Perform various unary
|
|
/// floating point operations. These are inspired by libm.
|
|
FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW,
|
|
FLOG, FLOG2, FLOG10, FEXP, FEXP2,
|
|
FCEIL, FTRUNC, FRINT, FNEARBYINT, FFLOOR,
|
|
|
|
/// FSINCOS - Compute both fsin and fcos as a single operation.
|
|
FSINCOS,
|
|
|
|
/// 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,
|
|
|
|
/// DYNAMIC_STACKALLOC - Allocate some number of bytes on the stack aligned
|
|
/// to a specified boundary. This node always has two return values: a new
|
|
/// stack pointer value and a chain. The first operand is the token chain,
|
|
/// the second is the number of bytes to allocate, and the third is the
|
|
/// alignment boundary. The size is guaranteed to be a multiple of the
|
|
/// stack alignment, and the alignment is guaranteed to be bigger than the
|
|
/// stack alignment (if required) or 0 to get standard stack alignment.
|
|
DYNAMIC_STACKALLOC,
|
|
|
|
/// Control flow instructions. These all have token chains.
|
|
|
|
/// BR - Unconditional branch. The first operand is the chain
|
|
/// operand, the second is the MBB to branch to.
|
|
BR,
|
|
|
|
/// BRIND - Indirect branch. The first operand is the chain, the second
|
|
/// is the value to branch to, which must be of the same type as the
|
|
/// target's pointer type.
|
|
BRIND,
|
|
|
|
/// BR_JT - Jumptable branch. The first operand is the chain, the second
|
|
/// is the jumptable index, the last one is the jumptable entry index.
|
|
BR_JT,
|
|
|
|
/// BRCOND - Conditional branch. The first operand is the chain, the
|
|
/// second is the condition, the third is the block to branch to if the
|
|
/// condition is true. If the type of the condition is not i1, then the
|
|
/// high bits must conform to getBooleanContents.
|
|
BRCOND,
|
|
|
|
/// BR_CC - Conditional branch. The behavior is like that of SELECT_CC, in
|
|
/// that the condition is represented as condition code, and two nodes to
|
|
/// compare, rather than as a combined SetCC node. The operands in order
|
|
/// are chain, cc, lhs, rhs, block to branch to if condition is true.
|
|
BR_CC,
|
|
|
|
/// INLINEASM - Represents an inline asm block. This node always has two
|
|
/// return values: a chain and a flag result. The inputs are as follows:
|
|
/// Operand #0 : Input chain.
|
|
/// Operand #1 : a ExternalSymbolSDNode with a pointer to the asm string.
|
|
/// Operand #2 : a MDNodeSDNode with the !srcloc metadata.
|
|
/// Operand #3 : HasSideEffect, IsAlignStack bits.
|
|
/// After this, it is followed by a list of operands with this format:
|
|
/// ConstantSDNode: Flags that encode whether it is a mem or not, the
|
|
/// of operands that follow, etc. See InlineAsm.h.
|
|
/// ... however many operands ...
|
|
/// Operand #last: Optional, an incoming flag.
|
|
///
|
|
/// The variable width operands are required to represent target addressing
|
|
/// modes as a single "operand", even though they may have multiple
|
|
/// SDOperands.
|
|
INLINEASM,
|
|
|
|
/// 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.
|
|
EH_LABEL,
|
|
|
|
/// 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
|
|
/// chain.
|
|
STACKSAVE,
|
|
|
|
/// STACKRESTORE has two operands, an input chain and a pointer to restore
|
|
/// to it returns an output chain.
|
|
STACKRESTORE,
|
|
|
|
/// 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
|
|
|
|
/// VAARG - VAARG has four operands: an input chain, a pointer, a SRCVALUE,
|
|
/// and the alignment. It returns a pair of values: the vaarg value and a
|
|
/// new chain.
|
|
VAARG,
|
|
|
|
/// VACOPY - VACOPY has 5 operands: an input chain, a destination pointer,
|
|
/// a source pointer, a SRCVALUE for the destination, and a SRCVALUE for the
|
|
/// source.
|
|
VACOPY,
|
|
|
|
/// VAEND, VASTART - VAEND and VASTART have three operands: an input chain,
|
|
/// pointer, and a SRCVALUE.
|
|
VAEND, VASTART,
|
|
|
|
/// SRCVALUE - This is a node type that holds a Value* that is used to
|
|
/// make reference to a value in the LLVM IR.
|
|
SRCVALUE,
|
|
|
|
/// MDNODE_SDNODE - This is a node that holdes an MDNode*, which is used to
|
|
/// reference metadata in the IR.
|
|
MDNODE_SDNODE,
|
|
|
|
/// PCMARKER - This corresponds to the pcmarker intrinsic.
|
|
PCMARKER,
|
|
|
|
/// READCYCLECOUNTER - This corresponds to the readcyclecounter intrinsic.
|
|
/// The only operand is a chain and a value and a chain are produced. The
|
|
/// value is the contents of the architecture specific cycle counter like
|
|
/// register (or other high accuracy low latency clock source)
|
|
READCYCLECOUNTER,
|
|
|
|
/// HANDLENODE node - Used as a handle for various purposes.
|
|
HANDLENODE,
|
|
|
|
/// INIT_TRAMPOLINE - This corresponds to the init_trampoline intrinsic. It
|
|
/// takes as input a token chain, the pointer to the trampoline, the pointer
|
|
/// to the nested function, the pointer to pass for the 'nest' parameter, a
|
|
/// SRCVALUE for the trampoline and another for the nested function
|
|
/// (allowing targets to access the original Function*).
|
|
/// It produces a token chain as output.
|
|
INIT_TRAMPOLINE,
|
|
|
|
/// ADJUST_TRAMPOLINE - This corresponds to the adjust_trampoline intrinsic.
|
|
/// It takes a pointer to the trampoline and produces a (possibly) new
|
|
/// pointer to the same trampoline with platform-specific adjustments
|
|
/// applied. The pointer it returns points to an executable block of code.
|
|
ADJUST_TRAMPOLINE,
|
|
|
|
/// TRAP - Trapping instruction
|
|
TRAP,
|
|
|
|
/// DEBUGTRAP - Trap intended to get the attention of a debugger.
|
|
DEBUGTRAP,
|
|
|
|
/// PREFETCH - This corresponds to a prefetch intrinsic. The first operand
|
|
/// is the chain. The other operands are the address to prefetch,
|
|
/// read / write specifier, locality specifier and instruction / data cache
|
|
/// specifier.
|
|
PREFETCH,
|
|
|
|
/// OUTCHAIN = ATOMIC_FENCE(INCHAIN, ordering, scope)
|
|
/// This corresponds to the fence instruction. It takes an input chain, and
|
|
/// two integer constants: an AtomicOrdering and a SynchronizationScope.
|
|
ATOMIC_FENCE,
|
|
|
|
/// Val, OUTCHAIN = ATOMIC_LOAD(INCHAIN, ptr)
|
|
/// This corresponds to "load atomic" instruction.
|
|
ATOMIC_LOAD,
|
|
|
|
/// OUTCHAIN = ATOMIC_LOAD(INCHAIN, ptr, val)
|
|
/// This corresponds to "store atomic" instruction.
|
|
ATOMIC_STORE,
|
|
|
|
/// Val, OUTCHAIN = ATOMIC_CMP_SWAP(INCHAIN, ptr, cmp, swap)
|
|
/// This corresponds to the cmpxchg instruction.
|
|
ATOMIC_CMP_SWAP,
|
|
|
|
/// Val, OUTCHAIN = ATOMIC_SWAP(INCHAIN, ptr, amt)
|
|
/// Val, OUTCHAIN = ATOMIC_LOAD_[OpName](INCHAIN, ptr, amt)
|
|
/// These correspond to the atomicrmw instruction.
|
|
ATOMIC_SWAP,
|
|
ATOMIC_LOAD_ADD,
|
|
ATOMIC_LOAD_SUB,
|
|
ATOMIC_LOAD_AND,
|
|
ATOMIC_LOAD_OR,
|
|
ATOMIC_LOAD_XOR,
|
|
ATOMIC_LOAD_NAND,
|
|
ATOMIC_LOAD_MIN,
|
|
ATOMIC_LOAD_MAX,
|
|
ATOMIC_LOAD_UMIN,
|
|
ATOMIC_LOAD_UMAX,
|
|
|
|
/// This corresponds to the llvm.lifetime.* intrinsics. The first operand
|
|
/// is the chain and the second operand is the alloca pointer.
|
|
LIFETIME_START, LIFETIME_END,
|
|
|
|
/// BUILTIN_OP_END - This must be the last enum value in this list.
|
|
/// The target-specific pre-isel opcode values start here.
|
|
BUILTIN_OP_END
|
|
};
|
|
|
|
/// FIRST_TARGET_MEMORY_OPCODE - Target-specific pre-isel operations
|
|
/// which do not reference a specific memory location should be less than
|
|
/// this value. Those that do must not be less than this value, and can
|
|
/// be used with SelectionDAG::getMemIntrinsicNode.
|
|
static const int FIRST_TARGET_MEMORY_OPCODE = BUILTIN_OP_END+150;
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
/// MemIndexedMode enum - This enum defines the load / store indexed
|
|
/// addressing modes.
|
|
///
|
|
/// UNINDEXED "Normal" load / store. The effective address is already
|
|
/// 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 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.
|
|
/// It considers the computation as being folded into the load /
|
|
/// store operation (i.e. the load / store does the address
|
|
/// computation as well as performing the memory transaction).
|
|
/// The base operand is always undefined. In addition to
|
|
/// producing a chain, pre-indexed load produces two values
|
|
/// (result of the load and the result of the address
|
|
/// computation); a pre-indexed store produces one value (result
|
|
/// of the address computation).
|
|
///
|
|
/// POST_INC The effective address is the value of the base pointer. The
|
|
/// POST_DEC value of the offset operand is then added to / subtracted
|
|
/// from the base after memory transaction. In addition to
|
|
/// producing a chain, post-indexed load produces two values
|
|
/// (the result of the load and the result of the base +/- offset
|
|
/// computation); a post-indexed store produces one value (the
|
|
/// the result of the base +/- offset computation).
|
|
enum MemIndexedMode {
|
|
UNINDEXED = 0,
|
|
PRE_INC,
|
|
PRE_DEC,
|
|
POST_INC,
|
|
POST_DEC,
|
|
LAST_INDEXED_MODE
|
|
};
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
/// LoadExtType enum - This enum defines the three variants of LOADEXT
|
|
/// (load with extension).
|
|
///
|
|
/// SEXTLOAD loads the integer operand and sign extends it to a larger
|
|
/// integer result type.
|
|
/// ZEXTLOAD loads the integer operand and zero extends it to a larger
|
|
/// integer result type.
|
|
/// EXTLOAD is used for two things: floating point extending loads and
|
|
/// integer extending loads [the top bits are undefined].
|
|
enum LoadExtType {
|
|
NON_EXTLOAD = 0,
|
|
EXTLOAD,
|
|
SEXTLOAD,
|
|
ZEXTLOAD,
|
|
LAST_LOADEXT_TYPE
|
|
};
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
/// ISD::CondCode enum - These are ordered carefully to make the bitfields
|
|
/// below work out, when considering SETFALSE (something that never exists
|
|
/// dynamically) as 0. "U" -> Unsigned (for integer operands) or Unordered
|
|
/// (for floating point), "L" -> Less than, "G" -> Greater than, "E" -> Equal
|
|
/// to. If the "N" column is 1, the result of the comparison is undefined if
|
|
/// the input is a NAN.
|
|
///
|
|
/// All of these (except for the 'always folded ops') should be handled for
|
|
/// floating point. For integer, only the SETEQ,SETNE,SETLT,SETLE,SETGT,
|
|
/// SETGE,SETULT,SETULE,SETUGT, and SETUGE opcodes are used.
|
|
///
|
|
/// Note that these are laid out in a specific order to allow bit-twiddling
|
|
/// to transform conditions.
|
|
enum CondCode {
|
|
// Opcode N U L G E Intuitive operation
|
|
SETFALSE, // 0 0 0 0 Always false (always folded)
|
|
SETOEQ, // 0 0 0 1 True if ordered and equal
|
|
SETOGT, // 0 0 1 0 True if ordered and greater than
|
|
SETOGE, // 0 0 1 1 True if ordered and greater than or equal
|
|
SETOLT, // 0 1 0 0 True if ordered and less than
|
|
SETOLE, // 0 1 0 1 True if ordered and less than or equal
|
|
SETONE, // 0 1 1 0 True if ordered and operands are unequal
|
|
SETO, // 0 1 1 1 True if ordered (no nans)
|
|
SETUO, // 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
|
|
SETUEQ, // 1 0 0 1 True if unordered or equal
|
|
SETUGT, // 1 0 1 0 True if unordered or greater than
|
|
SETUGE, // 1 0 1 1 True if unordered, greater than, or equal
|
|
SETULT, // 1 1 0 0 True if unordered or less than
|
|
SETULE, // 1 1 0 1 True if unordered, less than, or equal
|
|
SETUNE, // 1 1 1 0 True if unordered or not equal
|
|
SETTRUE, // 1 1 1 1 Always true (always folded)
|
|
// Don't care operations: undefined if the input is a nan.
|
|
SETFALSE2, // 1 X 0 0 0 Always false (always folded)
|
|
SETEQ, // 1 X 0 0 1 True if equal
|
|
SETGT, // 1 X 0 1 0 True if greater than
|
|
SETGE, // 1 X 0 1 1 True if greater than or equal
|
|
SETLT, // 1 X 1 0 0 True if less than
|
|
SETLE, // 1 X 1 0 1 True if less than or equal
|
|
SETNE, // 1 X 1 1 0 True if not equal
|
|
SETTRUE2, // 1 X 1 1 1 Always true (always folded)
|
|
|
|
SETCC_INVALID // Marker value.
|
|
};
|
|
|
|
/// isSignedIntSetCC - Return true if this is a setcc instruction that
|
|
/// performs a signed comparison when used with integer operands.
|
|
inline bool isSignedIntSetCC(CondCode Code) {
|
|
return Code == SETGT || Code == SETGE || Code == SETLT || Code == SETLE;
|
|
}
|
|
|
|
/// isUnsignedIntSetCC - Return true if this is a setcc instruction that
|
|
/// performs an unsigned comparison when used with integer operands.
|
|
inline bool isUnsignedIntSetCC(CondCode Code) {
|
|
return Code == SETUGT || Code == SETUGE || Code == SETULT || Code == SETULE;
|
|
}
|
|
|
|
/// isTrueWhenEqual - Return true if the specified condition returns true if
|
|
/// the two operands to the condition are equal. Note that if one of the two
|
|
/// operands is a NaN, this value is meaningless.
|
|
inline bool isTrueWhenEqual(CondCode Cond) {
|
|
return ((int)Cond & 1) != 0;
|
|
}
|
|
|
|
/// getUnorderedFlavor - This function returns 0 if the condition is always
|
|
/// false if an operand is a NaN, 1 if the condition is always true if the
|
|
/// operand is a NaN, and 2 if the condition is undefined if the operand is a
|
|
/// NaN.
|
|
inline unsigned getUnorderedFlavor(CondCode Cond) {
|
|
return ((int)Cond >> 3) & 3;
|
|
}
|
|
|
|
/// getSetCCInverse - Return the operation corresponding to !(X op Y), where
|
|
/// 'op' is a valid SetCC operation.
|
|
CondCode getSetCCInverse(CondCode Operation, bool isInteger);
|
|
|
|
/// getSetCCSwappedOperands - Return the operation corresponding to (Y op X)
|
|
/// when given the operation for (X op Y).
|
|
CondCode getSetCCSwappedOperands(CondCode Operation);
|
|
|
|
/// getSetCCOrOperation - Return the result of a logical OR between different
|
|
/// comparisons of identical values: ((X op1 Y) | (X op2 Y)). This
|
|
/// function returns SETCC_INVALID if it is not possible to represent the
|
|
/// resultant comparison.
|
|
CondCode getSetCCOrOperation(CondCode Op1, CondCode Op2, bool isInteger);
|
|
|
|
/// getSetCCAndOperation - Return the result of a logical AND between
|
|
/// different comparisons of identical values: ((X op1 Y) & (X op2 Y)). This
|
|
/// function returns SETCC_INVALID if it is not possible to represent the
|
|
/// resultant comparison.
|
|
CondCode getSetCCAndOperation(CondCode Op1, CondCode Op2, bool isInteger);
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
/// CvtCode enum - This enum defines the various converts CONVERT_RNDSAT
|
|
/// supports.
|
|
enum CvtCode {
|
|
CVT_FF, /// Float from Float
|
|
CVT_FS, /// Float from Signed
|
|
CVT_FU, /// Float from Unsigned
|
|
CVT_SF, /// Signed from Float
|
|
CVT_UF, /// Unsigned from Float
|
|
CVT_SS, /// Signed from Signed
|
|
CVT_SU, /// Signed from Unsigned
|
|
CVT_US, /// Unsigned from Signed
|
|
CVT_UU, /// Unsigned from Unsigned
|
|
CVT_INVALID /// Marker - Invalid opcode
|
|
};
|
|
|
|
} // end llvm::ISD namespace
|
|
|
|
} // end llvm namespace
|
|
|
|
#endif
|