1.7.6.1Copyright © 2003-2014 University of Illinois at Urbana-Champaign. All Rights Reserved.
LLVM API Documentation
ISD namespace - This namespace contains an enum which represents all of the SelectionDAG node types and value types.
| enum llvm::ISD::CondCode |
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.
| SETFALSE | |
| SETOEQ | |
| SETOGT | |
| SETOGE | |
| SETOLT | |
| SETOLE | |
| SETONE | |
| SETO | |
| SETUO | |
| SETUEQ | |
| SETUGT | |
| SETUGE | |
| SETULT | |
| SETULE | |
| SETUNE | |
| SETTRUE | |
| SETFALSE2 | |
| SETEQ | |
| SETGT | |
| SETGE | |
| SETLT | |
| SETLE | |
| SETNE | |
| SETTRUE2 | |
| SETCC_INVALID |
Definition at line 763 of file ISDOpcodes.h.
| enum llvm::ISD::CvtCode |
CvtCode enum - This enum defines the various converts CONVERT_RNDSAT supports.
Definition at line 844 of file ISDOpcodes.h.
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].
Definition at line 739 of file ISDOpcodes.h.
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).
Definition at line 720 of file ISDOpcodes.h.
| enum llvm::ISD::NodeType |
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.
| DELETED_NODE |
DELETED_NODE - This is an illegal value that is used to catch errors. This opcode is not a legal opcode for any node. |
| EntryToken |
EntryToken - This is the marker used to indicate the start of a region. |
| TokenFactor |
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. |
| AssertSext |
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 |
| AssertZext | |
| BasicBlock |
Various leaf nodes. |
| VALUETYPE | |
| CONDCODE | |
| Register | |
| RegisterMask | |
| Constant | |
| ConstantFP | |
| GlobalAddress | |
| GlobalTLSAddress | |
| FrameIndex | |
| JumpTable | |
| ConstantPool | |
| ExternalSymbol | |
| BlockAddress | |
| GLOBAL_OFFSET_TABLE |
The address of the GOT. |
| FRAMEADDR |
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. |
| RETURNADDR | |
| READ_REGISTER |
READ_REGISTER, WRITE_REGISTER - This node represents llvm.register on the DAG, which implements the named register global variables extension. |
| WRITE_REGISTER | |
| FRAME_TO_ARGS_OFFSET |
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. |
| EH_RETURN |
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_SJLJ_SETJMP |
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_LONGJMP |
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. |
| TargetConstant |
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. |
| TargetConstantFP | |
| TargetGlobalAddress |
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. |
| TargetGlobalTLSAddress | |
| TargetFrameIndex | |
| TargetJumpTable | |
| TargetConstantPool | |
| TargetExternalSymbol | |
| TargetBlockAddress | |
| TargetIndex |
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. |
| INTRINSIC_WO_CHAIN |
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_W_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_VOID |
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. |
| CopyToReg |
CopyToReg - This node has three operands: a chain, a register number to set to this value, and a value. |
| CopyFromReg |
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. |
| UNDEF |
UNDEF - An undefined node. |
| EXTRACT_ELEMENT |
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. |
| BUILD_PAIR |
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. |
| MERGE_VALUES |
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. |
| ADD |
Simple integer binary arithmetic operators. |
| SUB | |
| MUL | |
| SDIV | |
| UDIV | |
| SREM | |
| UREM | |
| SMUL_LOHI |
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. |
| UMUL_LOHI | |
| SDIVREM |
SDIVREM/UDIVREM - Divide two integers and produce both a quotient and remainder result. |
| UDIVREM | |
| CARRY_FALSE |
CARRY_FALSE - This node is used when folding other nodes, like ADDC/SUBC, which indicate the carry result is always false. |
| ADDC |
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. |
| SUBC | |
| ADDE |
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. |
| SUBE | |
| SADDO |
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. |
| UADDO | |
| SSUBO |
Same for subtraction. |
| USUBO | |
| SMULO |
Same for multiplication. |
| UMULO | |
| FADD |
Simple binary floating point operators. |
| FSUB | |
| FMUL | |
| FMA | |
| FDIV | |
| FREM | |
| FCOPYSIGN |
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. |
| FGETSIGN |
INT = FGETSIGN(FP) - Return the sign bit of the specified floating point value as an integer 0/1 value. |
| BUILD_VECTOR |
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. |
| INSERT_VECTOR_ELT |
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. |
| EXTRACT_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. |
| CONCAT_VECTORS |
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. |
| INSERT_SUBVECTOR |
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. |
| EXTRACT_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. |
| VECTOR_SHUFFLE |
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. |
| SCALAR_TO_VECTOR |
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. |
| MULHU |
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. |
| MULHS | |
| AND |
Bitwise operators - logical and, logical or, logical xor. |
| OR | |
| XOR | |
| SHL |
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.) |
| SRA | |
| SRL | |
| ROTL | |
| ROTR | |
| BSWAP |
Byte Swap and Counting operators. |
| CTTZ | |
| CTLZ | |
| CTPOP | |
| CTTZ_ZERO_UNDEF |
Bit counting operators with an undefined result for zero inputs. |
| CTLZ_ZERO_UNDEF | |
| SELECT |
Select(COND, TRUEVAL, FALSEVAL). If the type of the boolean COND is not i1 then the high bits must conform to getBooleanContents. |
| VSELECT |
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. |
| SELECT_CC |
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. |
| SETCC |
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. |
| SHL_PARTS |
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 |
| SRA_PARTS | |
| SRL_PARTS | |
| SIGN_EXTEND |
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. |
| ZERO_EXTEND |
ZERO_EXTEND - Used for integer types, zeroing the new bits. |
| ANY_EXTEND |
ANY_EXTEND - Used for integer types. The high bits are undefined. |
| TRUNCATE |
TRUNCATE - Completely drop the high bits. |
| SINT_TO_FP |
[SU]INT_TO_FP - These operators convert integers (whose interpreted sign depends on the first letter) to floating point. |
| UINT_TO_FP | |
| SIGN_EXTEND_INREG |
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. |
| ANY_EXTEND_VECTOR_INREG |
ANY_EXTEND_VECTOR_INREG(Vector) - This operator represents an in-register any-extension of the low lanes of an integer vector. The result type must have fewer elements than the operand type, and those elements must be larger integer types such that the total size of the operand type and the result type match. Each of the low operand elements is any-extended into the corresponding, wider result elements with the high bits becoming undef. |
| SIGN_EXTEND_VECTOR_INREG |
SIGN_EXTEND_VECTOR_INREG(Vector) - This operator represents an in-register sign-extension of the low lanes of an integer vector. The result type must have fewer elements than the operand type, and those elements must be larger integer types such that the total size of the operand type and the result type match. Each of the low operand elements is sign-extended into the corresponding, wider result elements. |
| ZERO_EXTEND_VECTOR_INREG |
ZERO_EXTEND_VECTOR_INREG(Vector) - This operator represents an in-register zero-extension of the low lanes of an integer vector. The result type must have fewer elements than the operand type, and those elements must be larger integer types such that the total size of the operand type and the result type match. Each of the low operand elements is zero-extended into the corresponding, wider result elements. |
| FP_TO_SINT |
FP_TO_[US]INT - Convert a floating point value to a signed or unsigned integer. |
| FP_TO_UINT | |
| FP_ROUND |
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. |
| FLT_ROUNDS_ |
FLT_ROUNDS_ - Returns current rounding mode: -1 Undefined 0 Round to 0 1 Round to nearest 2 Round to +inf 3 Round to -inf |
| FP_ROUND_INREG |
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_EXTEND |
X = FP_EXTEND(Y) - Extend a smaller FP type into a larger FP type. |
| BITCAST |
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(). |
| ADDRSPACECAST |
ADDRSPACECAST - This operator converts between pointers of different address spaces. |
| CONVERT_RNDSAT |
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 |
| FP16_TO_FP |
FP16_TO_FP, FP_TO_FP16 - These operators are used to perform promotions and truncation for half-precision (16 bit) floating numbers. These nodes form a semi-softened interface for dealing with f16 (as an i16), which is often a storage-only type but has native conversions. |
| FP_TO_FP16 | |
| FNEG |
FNEG, FABS, FSQRT, FSIN, FCOS, FPOWI, FPOW, FLOG, FLOG2, FLOG10, FEXP, FEXP2, FCEIL, FTRUNC, FRINT, FNEARBYINT, FROUND, FFLOOR - Perform various unary floating point operations. These are inspired by libm. |
| FABS | |
| FSQRT | |
| FSIN | |
| FCOS | |
| FPOWI | |
| FPOW | |
| FLOG | |
| FLOG2 | |
| FLOG10 | |
| FEXP | |
| FEXP2 | |
| FCEIL | |
| FTRUNC | |
| FRINT | |
| FNEARBYINT | |
| FROUND | |
| FFLOOR | |
| FSINCOS |
FSINCOS - Compute both fsin and fcos as a single operation. |
| LOAD |
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). |
| STORE | |
| DYNAMIC_STACKALLOC |
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. |
| BR |
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. |
| BRIND |
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. |
| BR_JT |
BR_JT - Jumptable branch. The first operand is the chain, the second is the jumptable index, the last one is the jumptable entry index. |
| BRCOND |
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. |
| BR_CC |
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. |
| INLINEASM |
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. |
| EH_LABEL |
EH_LABEL - Represents a label in mid basic block used to track locations needed for debug and exception handling tables. These nodes take a chain as input and return a chain. |
| STACKSAVE |
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. |
| STACKRESTORE |
STACKRESTORE has two operands, an input chain and a pointer to restore to it returns an output chain. |
| CALLSEQ_START |
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_END | |
| VAARG |
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. |
| VACOPY |
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. |
| VAEND |
VAEND, VASTART - VAEND and VASTART have three operands: an input chain, pointer, and a SRCVALUE. |
| VASTART | |
| SRCVALUE |
SRCVALUE - This is a node type that holds a Value* that is used to make reference to a value in the LLVM IR. |
| MDNODE_SDNODE |
MDNODE_SDNODE - This is a node that holdes an MDNode*, which is used to reference metadata in the IR. |
| PCMARKER |
PCMARKER - This corresponds to the pcmarker intrinsic. |
| READCYCLECOUNTER |
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) |
| HANDLENODE |
HANDLENODE node - Used as a handle for various purposes. |
| INIT_TRAMPOLINE |
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. |
| ADJUST_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. |
| TRAP |
TRAP - Trapping instruction. |
| DEBUGTRAP |
DEBUGTRAP - Trap intended to get the attention of a debugger. |
| PREFETCH |
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. |
| ATOMIC_FENCE |
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_LOAD |
Val, OUTCHAIN = ATOMIC_LOAD(INCHAIN, ptr) This corresponds to "load atomic" instruction. |
| ATOMIC_STORE |
OUTCHAIN = ATOMIC_STORE(INCHAIN, ptr, val) This corresponds to "store atomic" instruction. |
| ATOMIC_CMP_SWAP |
Val, OUTCHAIN = ATOMIC_CMP_SWAP(INCHAIN, ptr, cmp, swap) For double-word atomic operations: ValLo, ValHi, OUTCHAIN = ATOMIC_CMP_SWAP(INCHAIN, ptr, cmpLo, cmpHi, swapLo, swapHi) This corresponds to the cmpxchg instruction. |
| ATOMIC_CMP_SWAP_WITH_SUCCESS |
Val, Success, OUTCHAIN = ATOMIC_CMP_SWAP_WITH_SUCCESS(INCHAIN, ptr, cmp, swap) N.b. this is still a strong cmpxchg operation, so Success == "Val == cmp". |
| ATOMIC_SWAP |
Val, OUTCHAIN = ATOMIC_SWAP(INCHAIN, ptr, amt) Val, OUTCHAIN = ATOMIC_LOAD_[OpName](INCHAIN, ptr, amt) For double-word atomic operations: ValLo, ValHi, OUTCHAIN = ATOMIC_SWAP(INCHAIN, ptr, amtLo, amtHi) ValLo, ValHi, OUTCHAIN = ATOMIC_LOAD_[OpName](INCHAIN, ptr, amtLo, amtHi) These correspond to the atomicrmw instruction. |
| 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 | |
| LIFETIME_START |
This corresponds to the llvm.lifetime.* intrinsics. The first operand is the chain and the second operand is the alloca pointer. |
| LIFETIME_END | |
| BUILTIN_OP_END |
BUILTIN_OP_END - This must be the last enum value in this list. The target-specific pre-isel opcode values start here. |
Definition at line 39 of file ISDOpcodes.h.
allOperandsUndef - Return true if the node has at least one operand and all operands of the specified node are ISD::UNDEF.
Definition at line 223 of file SelectionDAG.cpp.
References llvm::SDNode::getNumOperands(), llvm::SDValue::getOpcode(), llvm::SDNode::getOperand(), and UNDEF.
Definition at line 237 of file SelectionDAG.cpp.
References ANY_EXTEND, EXTLOAD, llvm_unreachable, SEXTLOAD, SIGN_EXTEND, ZERO_EXTEND, and ZEXTLOAD.
Referenced by llvm::AMDGPUTargetLowering::LowerLOAD().
| ISD::CondCode llvm::ISD::getSetCCAndOperation | ( | ISD::CondCode | Op1, |
| ISD::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.
getSetCCAndOperation - Return the result of a logical AND between different comparisons of identical values: ((X op1 Y) & (X op2 Y)). This function returns zero if it is not possible to represent the resultant comparison.
Definition at line 327 of file SelectionDAG.cpp.
References isSignedOp(), SETCC_INVALID, SETEQ, SETFALSE, SETOEQ, SETOGT, SETOLT, SETUEQ, SETUGT, SETULT, and SETUO.
| ISD::CondCode llvm::ISD::getSetCCInverse | ( | ISD::CondCode | Op, |
| bool | isInteger | ||
| ) |
getSetCCInverse - Return the operation corresponding to !(X op Y), where 'op' is a valid SetCC operation.
Definition at line 266 of file SelectionDAG.cpp.
References SETTRUE2.
Referenced by changeVectorFPCCToAArch64CC(), getInverseCCForVSEL(), LowerXOR(), llvm::R600TargetLowering::PerformDAGCombine(), performSELECTCombine(), PerformSELECTCombine(), performSetccAddFolding(), and llvm::TargetLowering::SimplifySetCC().
| ISD::CondCode llvm::ISD::getSetCCOrOperation | ( | ISD::CondCode | Op1, |
| ISD::CondCode | Op2, | ||
| bool | isInteger | ||
| ) |
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.
Definition at line 303 of file SelectionDAG.cpp.
References isSignedOp(), SETCC_INVALID, SETNE, SETTRUE2, and SETUNE.
| ISD::CondCode llvm::ISD::getSetCCSwappedOperands | ( | ISD::CondCode | Operation | ) |
getSetCCSwappedOperands - Return the operation corresponding to (Y op X) when given the operation for (X op Y).
Definition at line 254 of file SelectionDAG.cpp.
Referenced by llvm::SelectionDAG::FoldSetCC(), llvm::TargetLowering::SimplifySetCC(), and TranslateX86CC().
| unsigned llvm::ISD::getUnorderedFlavor | ( | CondCode | Cond | ) | [inline] |
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.
Definition at line 817 of file ISDOpcodes.h.
Referenced by llvm::TargetLowering::SimplifySetCC().
Node predicates.
isBuildVectorAllOnes - Return true if the specified node is a BUILD_VECTOR where all of the elements are ~0 or undef.
Definition at line 97 of file SelectionDAG.cpp.
References BITCAST, BUILD_VECTOR, llvm::SDValue::getNode(), llvm::SDNode::getNumOperands(), llvm::SDValue::getOpcode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::EVT::getSizeInBits(), llvm::SDNode::getValueType(), llvm::EVT::getVectorElementType(), and UNDEF.
Referenced by CanFoldXORWithAllOnes(), PerformINTRINSIC_WO_CHAINCombine(), PerformSELECTCombine(), performXORCombine(), and WillBeConstantPoolLoad().
isBuildVectorAllZeros - Return true if the specified node is a BUILD_VECTOR where all of the elements are 0 or undef.
Definition at line 145 of file SelectionDAG.cpp.
References BITCAST, BUILD_VECTOR, llvm::SDValue::getNode(), llvm::SDNode::getNumOperands(), llvm::SDValue::getOpcode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::EVT::getSizeInBits(), llvm::SDNode::getValueType(), llvm::EVT::getVectorElementType(), and UNDEF.
Referenced by isZeroShuffle(), lowerIntegerElementInsertionVectorShuffle(), lowerV4F32VectorShuffle(), LowerVECTOR_SHUFFLEv16i8(), LowerVECTOR_SHUFFLEv32i8(), LowerVSETCC(), NormalizeVectorShuffle(), PerformINTRINSIC_WO_CHAINCombine(), PerformISDSETCCCombine(), PerformOrCombine(), PerformSELECTCombine(), PerformShuffleCombine256(), and WillBeConstantPoolLoad().
Return true if the specified node is a BUILD_VECTOR node of all ConstantSDNode or undef.
Definition at line 185 of file SelectionDAG.cpp.
References BUILD_VECTOR, llvm::SDNode::getNumOperands(), llvm::SDValue::getOpcode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), and UNDEF.
Referenced by getTargetVShiftByConstNode(), LowerShift(), LowerVSELECTtoBlend(), TransformVSELECTtoBlendVECTOR_SHUFFLE(), and tryToFoldExtendOfConstant().
| bool llvm::ISD::isEXTLoad | ( | const SDNode * | N | ) | [inline] |
isEXTLoad - Returns true if the specified node is a EXTLOAD.
Definition at line 2044 of file SelectionDAGNodes.h.
References EXTLOAD.
Referenced by isFloatingPointZero().
| bool llvm::ISD::isNON_EXTLoad | ( | const SDNode * | N | ) | [inline] |
isNON_EXTLoad - Returns true if the specified node is a non-extending load.
Definition at line 2037 of file SelectionDAGNodes.h.
References NON_EXTLOAD.
Referenced by EltsFromConsecutiveLoads(), isFloatingPointZero(), isScalarLoadToVector(), llvm::PPCTargetLowering::PerformDAGCombine(), PerformSINT_TO_FPCombine(), ShouldXformToMOVLP(), and TranslateX86CC().
| bool llvm::ISD::isNON_TRUNCStore | ( | const SDNode * | N | ) | [inline] |
isNON_TRUNCStore - Returns true if the specified node is a non-truncating store.
Definition at line 2080 of file SelectionDAGNodes.h.
| bool llvm::ISD::isNormalLoad | ( | const SDNode * | N | ) | [inline] |
isNormalLoad - Returns true if the specified node is a non-extending and unindexed load.
Definition at line 2029 of file SelectionDAGNodes.h.
References llvm::dyn_cast(), llvm::LSBaseSDNode::getAddressingMode(), llvm::LoadSDNode::getExtensionType(), NON_EXTLOAD, and UNINDEXED.
Referenced by canChangeToInt(), CheckForMaskedLoad(), hasNormalLoadOperand(), isLoadIncOrDecStore(), LowerAsSplatVectorLoad(), LowerVectorBroadcast(), LowerVectorIntExtend(), MayFoldLoad(), PerformInsertEltCombine(), performIntToFpCombine(), PerformSIGN_EXTEND_INREGCombine(), PerformSTORECombine(), PerformVMOVRRDCombine(), and XFormVExtractWithShuffleIntoLoad().
| bool llvm::ISD::isNormalStore | ( | const SDNode * | N | ) | [inline] |
isNormalStore - Returns true if the specified node is a non-truncating and unindexed store.
Definition at line 2072 of file SelectionDAGNodes.h.
References llvm::dyn_cast(), llvm::LSBaseSDNode::getAddressingMode(), llvm::StoreSDNode::isTruncatingStore(), and UNINDEXED.
Referenced by isLoadIncOrDecStore(), MayFoldIntoStore(), PerformSTORECombine(), and usesAllNormalStores().
isScalarToVector - Return true if the specified node is a ISD::SCALAR_TO_VECTOR node or a BUILD_VECTOR node where only the low element is not an undef.
Definition at line 202 of file SelectionDAG.cpp.
References BUILD_VECTOR, llvm::SDNode::getNumOperands(), llvm::SDValue::getOpcode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), SCALAR_TO_VECTOR, and UNDEF.
| bool llvm::ISD::isSEXTLoad | ( | const SDNode * | N | ) | [inline] |
isSEXTLoad - Returns true if the specified node is a SEXTLOAD.
Definition at line 2051 of file SelectionDAGNodes.h.
References SEXTLOAD.
Referenced by llvm::HexagonTargetLowering::getPostIndexedAddressParts(), llvm::ARMTargetLowering::getPostIndexedAddressParts(), llvm::ARMTargetLowering::getPreIndexedAddressParts(), and isSignExtended().
| bool llvm::ISD::isSignedIntSetCC | ( | CondCode | Code | ) | [inline] |
isSignedIntSetCC - Return true if this is a setcc instruction that performs a signed comparison when used with integer operands.
Definition at line 796 of file ISDOpcodes.h.
References SETGE, SETGT, SETLE, and SETLT.
Referenced by ExtendUsesToFormExtLoad(), and llvm::TargetLowering::SimplifySetCC().
| bool llvm::ISD::isTrueWhenEqual | ( | CondCode | Cond | ) | [inline] |
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.
Definition at line 809 of file ISDOpcodes.h.
Referenced by computePointerICmp(), and llvm::TargetLowering::SimplifySetCC().
| bool llvm::ISD::isTRUNCStore | ( | const SDNode * | N | ) | [inline] |
isTRUNCStore - Returns true if the specified node is a truncating store.
Definition at line 2086 of file SelectionDAGNodes.h.
| bool llvm::ISD::isUNINDEXEDLoad | ( | const SDNode * | N | ) | [inline] |
isUNINDEXEDLoad - Returns true if the specified node is an unindexed load.
Definition at line 2065 of file SelectionDAGNodes.h.
References UNINDEXED.
| bool llvm::ISD::isUNINDEXEDStore | ( | const SDNode * | N | ) | [inline] |
isUNINDEXEDStore - Returns true if the specified node is an unindexed store.
Definition at line 2092 of file SelectionDAGNodes.h.
References UNINDEXED.
| bool llvm::ISD::isUnsignedIntSetCC | ( | CondCode | Code | ) | [inline] |
isUnsignedIntSetCC - Return true if this is a setcc instruction that performs an unsigned comparison when used with integer operands.
Definition at line 802 of file ISDOpcodes.h.
References SETUGE, SETUGT, SETULE, and SETULT.
Referenced by emitComparison().
| bool llvm::ISD::isZEXTLoad | ( | const SDNode * | N | ) | [inline] |
isZEXTLoad - Returns true if the specified node is a ZEXTLOAD.
Definition at line 2058 of file SelectionDAGNodes.h.
References ZEXTLOAD.
Referenced by llvm::SelectionDAG::computeKnownBits(), and isZeroExtended().
const int llvm::ISD::FIRST_TARGET_MEMORY_OPCODE = BUILTIN_OP_END+180 [static] |
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.
Definition at line 690 of file ISDOpcodes.h.
Referenced by llvm::SelectionDAG::getMemIntrinsicNode(), and llvm::SDNode::isTargetMemoryOpcode().
Generated on Thu Sep 18 2014 04:12:50 for LLVM by
1.7.6.1
Copyright © 2003-2014 University of Illinois at Urbana-Champaign.
All Rights Reserved.