Introduce a new gen-pass-instances.awk script, and use it at build time
to make a pass-instances.def from passes.def.
gcc/
* Makefile.in (pass-instances.def): New.
(passes.o): Replace dependency on passes.def with one on
pass-instances.def
* gen-pass-instances.awk: New.
* passes.c (pass_manager::pass_manager): Use pass-instances.def
rather than passes.def, updating local definition of NEXT_PASS
macro to add an extra NUM parameter (currently unused).
From-SVN: r201359
