An Embeddable Compiler Backend
A language frontend links it, builds an representation in memory, and gets back an executable, an object file, C, LLVM IR, or a running program. A C99 core, approachable text, and backends you can choose.
A frontend calls the builder API directly. The text format is one client of it, not a layer above it.
x86_64, arm64 and riscv64, in ELF, Mach-O or COFF, with the target chosen at run time. One binary cross-compiles.
Every optimization pass has to agree with no passes at all, on every program in the corpus, on four architectures.
The interpreter executes IR directly, for tests, compile-time evaluation, or a scripting runtime.