Easy-Just-In-Time

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easy-just-in-time is a Coding & Development tool that enables just-in-time code generation for C++ applications. It's a compiler-assisted library that extracts and executes functions using the LLVM Just-In-Time compiler.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Skill level

Technical

About

What is easy-just-in-time?

easy-just-in-time is a compiler-assisted library designed for C++ developers, facilitating Just-In-Time (JIT) code generation. It leverages LLVM optimization to extract specific functions, embedded in their intermediate representation within the binary, and execute them dynamically using the LLVM JIT compiler. This tool simplifies the process of dynamic code generation in C++ applications, allowing for runtime specialization of functions. It includes features like automatic function exposure deduction, a macro for explicit function exposure (EASY_JIT_EXPOSE), and a code cache to prevent recompilation of already generated functions, enhancing performance and flexibility for C++ projects.

Best used for

Ideal for developers who need to dynamically optimize and execute C++ functions at runtime, specialize code for specific parameters, and improve application performance. Especially valuable for projects requiring flexible and efficient Just-In-Time code generation within a C++ environment.

Common actions

optimize C++ code

generate code dynamically

execute code at runtime

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Capabilities

Key features

LLVM optimization
Function extraction
Just-In-Time compilation
C++ code generation
Function exposure macro
Code caching

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What are the system requirements for building easy-just-in-time?

To build easy-just-in-time, you need to install clang and LLVM, specifically version 6.0 or compatible. The project also requires C++14 support for its included headers. Optional dependencies include OpenCV for examples and Google Benchmark for benchmarking features.

How do I integrate easy-just-in-time into my C++ project?

Integration requires loading a compiler plugin using the `-Xclang -load` flag, including the necessary headers with `-I`, and linking against the Easy::Jit runtime library with `-L` and `-lEasyJitRuntime`. The library's core function, `easy::jit`, is then used to specialize functions.

How does easy-just-in-time handle function exposure for JIT compilation?

easy-just-in-time attempts to deduce which functions to specialize at runtime. If automatic deduction isn't possible, developers can explicitly expose functions using the `EASY_JIT_EXPOSE` macro or by providing a regular expression during compilation to match function names.

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