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Re: Removing unnecessary ADDR_EXPRs


On Tue, 2005-05-17 at 21:42 +0200, Richard Guenther wrote:
> On 5/17/05, Jeffrey A Law <law@redhat.com> wrote:
> > Can you dump the types of the outer INDIRECT_REF, the ADDR_EXPR and
> > the first argument to the ADDR_EXPR?    The only way I can see folding
> > failing is if there's a type bogosity somewhere.  I've instrumented that
> > code locally, but haven't managed to make it trip yet.
> 
> Sorry to followup again, but I suppose I merely trigger a latent bug elsewhere.
> Actually, during rewrite_into_ssa we call parse_ssa_operands on
> (&<retval>)->_M_stateD.32454 = __stD.41263 which finally calls
> get_indirect_ref_operands with the above stmt and expr = *&<retval>
> It isn't expecting an expr of this form, unfortunately.  So it looks something
> before rewrite_into_ssa is producing non-gimple?  Actually changing all
> fold_indirect_ref in tree-inline.c to fold_indirect_ref_rhs fixes the problem.

Hmmm, we might be better off if you can send me whatever tweaks you've
got in your tree.  There's most likely a type issue somewhere that's
causing these problems, but it's going to be bloody hard to find via
email :-)

jeff



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