[PATCH, RFC] weakref error with ppc -m64 -mcall-aixdesc

[Alexandre Oliva]

An asm source such as:

.weakref foo, bar
.weakref .foo, .bar

should not have any entries in the symbol table, but what we were
getting was a strong undef for .bar.  After fixing that, and adding:

bl .foo

I noticed that .bar made it to the symbol table as weak, but bar
didn't make it at all, contrary to the intent of the code I'd just
tweaked, so I narrowed the condition used to drop weakrefd symbols
such that both bar and .bar would make it as weak symbols.

Ok to install?  Tested on amd64-linux-gnu-x-ppc64-linux-gnu.

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-- 
Alexandre Oliva         http://www.lsd.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer   aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist  oliva@{lsd.ic.unicamp.br, gnu.org}