tvm::runtime::vm Namespace Reference

Classes
struct	Instruction
	A single virtual machine instruction. More...
struct	TensorCacheMetadata
	Metadata for Tensor cache, which by default, is named as "tensor-cache.json". More...
class	VirtualMachine
	The virtual machine. More...
class	VMClosure
	reference to closure. More...
class	VMClosureObj
	An object representing a vm closure. More...
class	VMExecutable
	The virtual machine executable emitted by the VM compiler. More...
class	VMExtension
	Managed reference to VM extension. More...
class	VMExtensionNode
	Represent a VM extension. A VM extension allows the user to extend the VM with target specific functionalities. The VM holds the reference of the extensions to ensure the extensions have the same lifetime as the VM. More...
struct	VMFuncInfo
	Information entry in executable function table. More...

Typedefs
using	ExecWord = int64_t
	The storage type for the bytecode in the VM.
using	RegName = ExecWord
	A register name.
using	Index = ExecWord
	An alias for the integer type used ubiquitously in the VM.

Enumerations
enum class	MatchShapeCode : int { kAssertEqualToImm = 0 , kStoreToHeap = 1 , kNoOp = 2 , kAssertEqualToLoad = 3 }
	Op code used in built-in match-shape function. More...
enum class	MakeShapeCode : int { kUseImm = 0 , kLoadShape = 1 }
	Op code used in builtin function MakeShape. More...
enum class	Opcode { Call = 1U , Ret = 2U , Goto = 3U , If = 4U }
	An enumeration of Relax's opcodes. More...
enum class	VMInstrumentReturnKind : int { kNoOp = 0 , kSkipRun = 1 }
	Possible instrument actions. More...

Typedef Documentation

ExecWord

using tvm::runtime::vm::ExecWord = typedef int64_t

The storage type for the bytecode in the VM.

Index

using tvm::runtime::vm::Index = typedef ExecWord

An alias for the integer type used ubiquitously in the VM.

RegName

using tvm::runtime::vm::RegName = typedef ExecWord

A register name.

Enumeration Type Documentation

MakeShapeCode

enum class tvm::runtime::vm::MakeShapeCode : int

strong

Op code used in builtin function MakeShape.

MakeShape(shape_heap, n, c[0], r[0], c[1], r[1], ... c[n], r[n]).

Note

It is OK to pass nullptr to shape_heap if all code are UseImm.

Enumerator
kUseImm	Use the following r[i] as immediate shape value.
kLoadShape	Load shape value from the shape_heap[[r[i]].

MatchShapeCode

enum class tvm::runtime::vm::MatchShapeCode : int

strong

Op code used in built-in match-shape function.

The function takes the following signature:

MatchShape(input_shape, shape_heap, n, c[0], r[0], c[1], r[1], ... c[n], r[n], err_ctx)

This function provides runtime shape population and checking support for match-cast. When a shape variable appears in the first time, we should load the shape and populate the variable. When a shape variable already appears, we should assert that it already equals an existing shape value.

NOTE: It is OK to pass nullptr shape_heap if all code are AssertEqualToImm.

Enumerator
kAssertEqualToImm	Perform an assertion that shape equals immediate. assert input_shape[i] == r[i]
kStoreToHeap	This is the first time we see a symbolic shape variable, store to heap. shape_heap[r[i]] = input_shape[i]
kNoOp	skip and do not do anything.
kAssertEqualToLoad	Peform an assertion that the shape equals a loaded value. assert input_shape[i] == shape_heap[r[i]]

Opcode

enum class tvm::runtime::vm::Opcode

strong

An enumeration of Relax's opcodes.

The opcode is used to implement instruction as a tagged union.

Enumerator
Call
Ret
Goto
If

VMInstrumentReturnKind

enum class tvm::runtime::vm::VMInstrumentReturnKind : int

strong

Possible instrument actions.

Enumerator
kNoOp	Running as normal.
kSkipRun	Skip the following run, only valid in before.