From the manual:
--no-c-code-in-asm Hides your ugly and inefficient c-code from the asm file,
so you can always blame the compiler :).
--i-code-in-asm Include i-codes in the asm file. Looks like noise but is
most helpfull for debugging the compiler itself.
Most noticable in src/asm.c:1.24. I needed a pipe for this, don't know if it
will break non-gcc builds, but if it does: please let me know.