Optimisation (execution)

[malcolmstill]

• feat: runtime representation of instructions #84
• Tail-call interpreter dispatch #120
• Fast if Fast if #132
  • Provide a faster if instruction for if blocks that have no else branch
• Function-level stack overflow checking Perform op stack space check on entering a function #130 Operand stack size check on function call instead of instruction #133
• Reduce size of Instruction (replace usize with u32)? Reduce Instruction size #134
• Fast call
  • Provide a faster call instruction for functions internal to a module
• Split out opcode from meta (for better cache packing)?
  • Only push metadata for instructions that have non-void metadata (better packing). Separate array for for index into the metadata array
• Dispatch with function pointers rather than lookup table