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brainfuck

A brainfuck to Koopa IR compiler.

Usage

Run in the repository root:

echo "++++++++[->++++++++<]>++++++++.<+++++[->+++++<]>++++.+++++++" \
     "..+++.<++++++++[->--------<]>---------------.<++++++[->+++++" \
     "+<]>+++++++.<++++++[->++++++<]>..+.<+++[->---<]>------.<++++" \
     "++++[->--------<]>.<" | cargo run --example brainfuck -- -o output.koopa

You will see the generated Koopa IR in file output.koopa.

Or you can convert the generated Koopa IR to LLVM IR:

echo "++++++++[->++++++++<]>++++++++.<+++++[->+++++<]>++++.+++++++" \
     "..+++.<++++++++[->--------<]>---------------.<++++++[->+++++" \
     "+<]>+++++++.<++++++[->++++++<]>..+.<+++[->---<]>------.<++++" \
     "++++[->--------<]>.<" | cargo run --example brainfuck -- -ll | opt -O3 -S | lli

You will see:

    Finished dev [unoptimized + debuginfo] target(s) in 0.11s
     Running `target/debug/brainfuck -ll`
Hello Koopa!

Alternatively, you can read the input brainfuck program from file:

cargo run --example brainfuck -- -i examples/brainfuck/pi.bf -ll | opt -O3 -S | lli