http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60040
Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |amylaar at gcc dot gnu.org
--- Comment #5 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> ---
Created attachment 32372
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32372&action=edit
tentative patch for tentative reloads
In this case, reload already knows that it has to re-do the reloads, but it
goes ahead anyway and computes reloads registers for this iteration.
Unfortunately, when find_reload_regs fails, it then calls spill_failure,
giving a hard error for a reload that we don't need in the first place.
The patch in this attachment passes down something_changed from reload
as tentative to select_reload_regs and then on to find_reload_regs to
not worry about the failure.
Also, in reload, I made it not 'goto failure' in that case.
