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Tiny v0.2.3 - Advanced JIT and Native Data Structures

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@confh confh released this 11 Jun 21:25
v0.2.3
53661e3

Tiny v0.2.3 - Advanced JIT and Native Data Structures

This release focuses on a complete overhaul of the JIT compilation engine, transitioning to a unified multi-function architecture and introducing high-performance native memory management for objects and arrays.

JIT Compiler Overhaul

  • Multi-Function Compilation: The JIT engine now compiles all eligible functions into a single WASM module. This enables direct inter-function calls within WASM, significantly reducing context-switching overhead between the VM and host environment.
  • WASM-Native Allocations: Objects and arrays created within JIT-compiled functions are now allocated directly in WASM linear memory. This eliminates the need for Go-side allocation for hot code paths.
  • Expanded Opcode Support: Added JIT support for complex operations including property access (get, set), array indexing, and built-in method acceleration for push, get, and length.
  • Intelligent Type Inference: The compiler now performs static type flow analysis to optimize tagged value handling, specifically for boolean and numeric operations.

VM and Runtime Improvements

  • Unified Arithmetic Engine: Refactored core arithmetic operations into a centralized provider. This ensures strict behavioral parity between interpreted and JIT-compiled execution, particularly for floating-point division and modulo operations.
  • Zero-Copy Interop: Introduced proxy types for WASM-resident objects and arrays, allowing the interpreter to interact with JIT-allocated data structures without costly serialization.
  • Packing Detection: Added runtime.isPacked() to the standard library, enabling applications to detect if they are running within a standalone binary created by tiny pack.
  • Enhanced Debugging: Test infrastructure now captures stderr output from the VM, improving the diagnostic capabilities for JIT deoptimization and runtime panics.

Breaking Changes

  • Internal Bytecode Version: Bumped to 22 to accommodate new JIT metadata and assumption tracking.
  • Float Truncation: Removed implicit float-to-int truncation in several internal bytecode conversion paths to enforce stricter type adherence.
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