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This implementation has been compiled with the [pigweed toolchain](https://pigweed.dev/toolchain.html) and tested on: - Raspberry Pi Pico 2 with the following options\ `--target=armv8m.main-none-eabi` `-march=armv8m.main+fp+dsp` `-mcpu=cortex-m33` - Raspberry Pi Pico with the following options\ `--target=armv6m-none-eabi` `-march=armv6m` `-mcpu=cortex-m0+` They both compile down to a little bit more than 200 bytes and are between 2 and 10 times faster than byte per byte copies. For best performance the following options can be set in the `libc/config/baremetal/arm/config.json` ``` { "codegen": { "LIBC_CONF_KEEP_FRAME_POINTER": { "value": false } }, "general": { "LIBC_ADD_NULL_CHECKS": { "value": false } } } ```
LLVM libc ========= This directory and its subdirectories contain source code for llvm-libc, a retargetable implementation of the C standard library. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.