AVR-LLVM examples

NOTE: Before running the examples, make sure the built AVR-LLVM directory is inside the $PATH environment variable. It must also preceed the location any other LLVM installation (such as in /usr/bin), otherwise that one will be used instead.

To do this:

export PATH=~/projects/builds/llvm/bin:$PATH

A collection of AVR-LLVM examples.

There exists a base file in each subdirectory - it may be a C/C++ source (.c/.cpp), an LLVM IR (.ll) source, or an AVR assembly file (.s).

Using the examples

Inside each example subdirectory, run make.

• If an example consists of a C header file, an LLVM IR file will be generated from it.
• If an example consists of an LLVM IR file, or one was just generated from a C file, an AVR assembly file will be generated from it.

For some examples, compiler options such as the target CPU and the clock speed may need to be changed. You can modify these settings by opening Makefile.config.

More examples

There are more examples in llvm/test/*/AVR directories inside AVR-LLVM. They are not as user-friendly however.