The Intermediate Code Compiler (IMCC) is an alternate tool for creating and running Parrot bytecode. It has several advantages over the method introduced in the previous chapter. It's a Parrot assembler and embeds the Parrot runtime engine, so it can compile a PASM file to bytecode and immediately run the bytecode with a single command. IMCC can also perform code optimizations, though it doesn't by default.
IMCC includes its own language, which is commonly called Parrot Intermediate Language (PIR). PIR is an overlay on top of Parrot assembly language and has many higher-level features, though it still isn't a high-level language. Assembly files containing PIR code end with an .imc extension.