FLUX Optimizer — Peephole Bytecode Optimizer

Reduce FLUX bytecode size and improve performance.

Optimization Passes

• HALT Truncate: Remove dead code after first HALT
• NOP Eliminate: Remove no-op instructions
• Constant Fold: MOVI + ADDI → MOVI (combined immediate)
• Strength Reduce: MUL by 2 → ADD (register-to-register)
• Redundant MOV: Remove MOV R0, R0 self-assignments
• Dead Code: Remove unused register stores
• Peephole: General pattern matching

Usage

from optimizer import PeepholeOptimizer, OptPass

opt = PeepholeOptimizer([0x01, 0x18, 0, 10, 0x19, 0, 20, 0x00, 0x18, 1, 99])
result = opt.optimize()
print(f"Saved {result.savings} bytes ({result.original_bytes} → {result.optimized_bytes})")
for rule in result.rules_applied:
    print(f"  {rule}")

10 tests passing.