This prompt outlines the implementation of a comprehensive block-based optimization system for the Guillotine EVM that introduces BLOCK_START pseudo-instructions to enable advanced optimizations including stack validation, gas pre-calculation, and intelligent prefetching.
Instead of validating stack depth and calculating gas costs instruction-by-instruction during execution, we pre-analyze bytecode into basic blocks and aggregate requirements at the block level. This enables:
| /// Frame represents the entire execution state of the EVM as it executes opcodes | |
| /// Layout designed around actual opcode access patterns and data correlations | |
| pub const Frame = struct { | |
| // ULTRA HOT - Accessed by virtually every opcode | |
| stack: Stack, // 33,536 bytes - accessed by every opcode (PUSH/POP/DUP/SWAP/arithmetic/etc) | |
| gas_remaining: u64, // 8 bytes - checked/consumed by every opcode for gas accounting | |
| // HOT - Accessed by major opcode categories | |
| memory: *Memory, // 8 bytes - hot for memory ops (MLOAD/MSTORE/MSIZE/MCOPY/LOG*/KECCAK256) | |
| analysis: *const CodeAnalysis, // 8 bytes - hot for control flow (JUMP/JUMPI validation) | |
| // Hot execution flags (only the bits that are actually checked frequently) |
<task_definition> Create a secure, high-performance Git command execution wrapper in Zig that provides a safe interface for running Git operations. This wrapper will be the foundation for all Git functionality in Plue, supporting both local operations and Git smart HTTP protocol for remote operations. </task_definition>
<context_and_constraints>
<technical_requirements>
Not a dumb question at all — Unicode is one of those things that feels invisible and magical until you peek under the hood. Let’s break this down:
⸻
🧠 How do machines know what Unicode characters mean?
Machines don’t intrinsically know what Unicode is. They just deal with numbers (code points). What gives those numbers meaning is: 1. The Unicode Standard (the global agreement). 2. Fonts and rendering engines (to visually represent them). 3. Software libraries and operating systems (to parse, encode, and decode).
| const std = @import("std"); | |
| const ens_normalize = @import("ens_normalize"); | |
| const tokenizer = ens_normalize.tokenizer; | |
| const code_points = ens_normalize.code_points; | |
| const testing = std.testing; | |
| // Main fuzz testing function that should never crash | |
| pub fn fuzz_tokenization(input: []const u8) !void { | |
| var gpa = std.heap.GeneralPurposeAllocator(.{}){}; | |
| defer _ = gpa.deinit(); |
OpenCode is a command-line AI coding assistant that provides an interactive terminal-based interface for AI-powered software development. It supports multiple AI providers, offers extensive customization options, and includes advanced features like language server integration, file monitoring, and session sharing.
Source: packages/opencode/src/installation/index.ts
| === WASM Size Analysis Tool === | |
| ## File Size Comparison | |
| Debug build: 1,451,592 bytes (1.38 MB) | |
| Stripped build: 136,695 bytes (133.49 KB) | |
| Debug overhead: 1,314,897 bytes (1.25 MB) (90.6% of debug build) | |
| ## Detailed Analysis of Stripped Build |
Below is a detailed breakdown of how Ethereum’s built-in precompiled contracts are handled in two major EVM implementations—EthereumJS (TypeScript/JavaScript) and Revm (Rust)—including where the code lives, what libraries it leverages, how it’s compiled (or not) to WebAssembly, and illustrative code snippets.
Ethereum precompiled contracts are “native” contracts at fixed addresses that perform complex operations more efficiently than EVM bytecode. The original set at addresses 0x01–0x09 is defined in Appendix E of the Yellow Paper, and subsequent EIPs have added more:
| import { readdirSync } from "node:fs"; | |
| import { readFile, writeFile } from "node:fs/promises"; | |
| import { join, basename } from "node:path"; | |
| import { execSync } from "node:child_process"; | |
| import { GoogleGenerativeAI } from "@google/generative-ai"; | |
| import "dotenv"; | |
| const GEMINI_API_KEY = process.env.GEMINI_API_KEY; | |
| const MODEL = "gemini-2.5-pro-preview-06-05 "; |