http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58675
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-02-10
CC| |amodra at gmail dot com
Ever confirmed|0 |1
--- Comment #3 from Alan Modra <amodra at gmail dot com> ---
I reckon this is overly restrictive checking in rs6000_secondary_reload_inner.
rtl during reload is a little messy. I'll bet that
(plus:DI (plus:DI (reg/f:DI 1 1)
(const_int 65536 [0x10000]))
(const_int -30176 [0xffffffffffff8a20]))
has a reload pushed for the inner plus.
ie. what you really have here is
(plus:DI (reg:DI some_gpr)
(const_int -30176 [0xffffffffffff8a20]))
which is perfectly fine.
(No, I haven't looked at this testcase under gdb to confirm this is exactly
what is going on, but I've looked at reload enough in the past to risk an
opinion here.)
