Implement Inline Caching for Dynamic Dispatch

Implement a simple inline cache simulator in C.

Requirements:

• Define a structure representing a call site with a cached target
• Implement monomorphic inline cache: check receiver type, call cached function on hit
• Implement polymorphic inline cache: check 2-4 cached targets in sequence
• Simulate type transitions and measure cache hit/miss rates
• Show the code path for cache hit (fast) vs cache miss (slow)
• Print statistics: hits, misses, hit rate
• Demonstrate transition from monomorphic to polymorphic to megamorphic
• Explain why megamorphic sites are slow

Test:

• Show cache hit path
• Show cache miss path
• Show hit rate statistics
• Show transition to megamorphic