#pragma once
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#include <typeinfo>
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#include <stdint.h>
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#include <unordered_set>
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namespace torch {
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namespace jit {
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// instructs look like:
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// op_code X, N
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// meaning of X, N depend on the op:
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// O - index into operator table
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// R - index into register table
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// I - literal integer
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// C - index into constant table
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// P - jump offset relative to beginning of current instruction
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// F - index into function table
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// T - index into the type table, used for guard instructions
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// S - index into object slots
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#define FORALL_OPCODES(_) \
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_(OP, "O") /* invoke operator X */ \
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_(LOAD, "R") /* push a value from a register X */ \
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_(MOVE, "R") /* push a value from register X, clearing the register */ \
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_(STOREN, "RI") /* store N values to registers [X, X+N) */ \
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_(STORE, "R") /* store 1 value to registers X */ \
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_(DROP, "") /* drop 1 value from the top of the stack */ \
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_(DROPR, "R") /* clear register X */ \
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_(LOADC, "C") /* push the constant X */ \
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_(JF, "P") /* pop the top of the stack, if false, branch to P */ \
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_(JMP, "P") /* unconditional branch to X */ \
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_(LOOP, "PI") /* perform a loop, X is where to branch if cond is false */ \
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_(RET, "") /* exit execution */ \
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_(WAIT, "") /* wait for a future to be complete */ \
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_(CALL, "F") /* call function X */ \
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_(GUARD, "T") /* check guard against type_table, true if passes */ \
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_(TAIL_CALL, "F") /* replace current frame with function F */ \
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_(INTERFACE_CALL, "CI") /* call method X on the first argument (of N) */ \
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_(GET_ATTR, "S") /* get attribute from slot X in an Object */ \
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_(SET_ATTR, "S") /* set attribute to slot X in an Object */
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enum OpCode : uint8_t {
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#define DEFINE_OP(op, _) op,
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FORALL_OPCODES(DEFINE_OP)
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#undef DEFINE_OP
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};
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struct Instruction {
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OpCode op;
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uint8_t padding; // currently unused
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uint16_t N;
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int32_t X;
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// TODO: check for overflow
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Instruction(OpCode op, int32_t X, uint16_t N)
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: op(op), padding(0), N(N), X(X) {}
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};
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bool isOpSupportedInMobile(OpCode op);
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}
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}
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