A Local-First Assembly Explorer (C++)

A private, native, CLI Compiler Explorer that runs entirely in your terminal. Watch C++ assembly performance update live. No AI or Internet required.

Get Started Using The Repo

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localbolt hello.cpp

main:

stp x29, x30, [sp, #-16]! ; Save Frame Pointer

mov x29, sp

adrp x0, l_.str@PAGE

add x0, x0, l_.str@PAGEOFF

bl _printf ; Call printf

mov w0, #0

ldp x29, x30, [sp], #16

ret

Watches your source files and recompiles instantly. See the direct impact of your code changes on generated assembly.

Powered by llvm-mca. Visualizes instruction latency and clock cycles with a clean green-to-red heatmap right in the gutter.

Automatic 5-stage cleaning pipeline removes compiler noise, debug symbols, and internal headers. So you just see the assembly instructions!

Mosaic Dashboard

The main TUI interface showing side-by-side assembly and help.

Smart Reference

Interactive instruction database for x86 and ARM64.

Source Peek

Real-time mapping between C++ lines and assembly output.

Built for Performance.

DRIVER

g++ / llvm-mca

PARSER

Clean & Map

ENGINE

Coordinate State

Textual TUI