[Bug optimization/11319] [3.3/3.4 regression] loop miscompiled on ppc32

[janis187 at us dot ibm dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11319


janis187 at us dot ibm dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rth at redhat dot com


------- Additional Comments From janis187 at us dot ibm dot com  2003-08-05 21:15 -------
The regression in PR 11319 was introduced or exposed by this patch:

2002-02-07  Richard Henderson  <rth@redhat.com>

        PR optimization/2463
        * alias.c (find_base_value): Recall base values for fixed hard regs.
        * loop.c (loop_regs_update): Don't use single_set on non-insns.

The regression hunt took place on powerpc-linux using the test case from
the attachment in comment #1 compiled with -O2 and then executed.