Request for documentation: Do "define_instruction_and_split" patterns apply also in the combiner pass?

[Ben Elliston]

Björn Haase <bjoern.m.haase@web.de> writes:

> I am presently working on the back-end of the avr port and got stuck
> when planning improvements of the back-end. When looking at the arm
> port, e.g., it seems that the compiler knows
> "define_instruction_and_split" patterns that are so far not
> documented in the gcc manual.

I assume you're talking about define_insn_and_split, which is indeed
documented.  Are you sure you've not confused it by name?

  http://gcc.gnu.org/onlinedocs/gccint/Insn-Splitting.html#Insn-Splitting

Ben