herumi/xbyak
A JIT assembler for x86/x64 architectures supporting FPU, MMX, SSE (1-4), AVX (1-2, 512), APX, and AVX10.2 observed · 2026-08-28
Health v2 · maintenance only
77/100
- Activity 99
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5984
- days_rel: n/a
- days_push: 7
- n_releases_24m: 0
Adoption not part of the score
2269 stars · 311 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Xbyak is a C++ header-only JIT assembler for generating x86/x64 machine code at runtime using Intel/MASM-like mnemonics. It supports instruction sets up to AVX-512, APX, and AVX10.2.
Use cases
- generate x86 machine code at runtime
- build a JIT compiler for x86-64
- emit AVX-512 instructions dynamically
- assemble instructions programmatically in C++
- runtime code generation for a numerical kernel
- write a dynamic binary translator backend
When to choose
- you need fast runtime x86/x64 code generation from C++
- you require cutting-edge instruction sets like AVX10.2 or APX
- you want a header-only dependency with no build step
When to avoid
- you target non-x86 architectures (use Xbyak_aarch64 or Xbyak_riscv instead)
- you need a static assembler producing object files rather than JIT code
- your project is not C++
Facets
library · maturity active
compiler developer-tools developer-tools performance compilers cpp windows cross-platform jit-assembler x86 x64 header-only avx-512 apx code-generation runtime-codegen linux macos
1 source
- readme: https://github.com/herumi/xbyak · fetched 2026-08-28 · bc17ed6b68e9
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| herumi/xbyak | main | 77 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem