reload vs adds with clobbers

[Ulrich Weigand]

DJ Delorie wrote:

>In gen_reload (reload1.c) there's a chunk of code that creates an add
>insn without going through the usual expanders:
[snip]
>What's the right way to address this problem?

We're having the same problem on s390.  The way I've fixed it
is to prevent gen_reload from ever taking that path by marking
all PLUS expressions that would otherwise go there as needing
a secondary reload (via SECONDARY_INPUT_RELOAD_CLASS) and 
doing the right thing in reload_insi ...

Bye,
Ulrich

-- 
  Dr. Ulrich Weigand
  weigand@informatik.uni-erlangen.de