https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78166
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-11-01
Ever confirmed|0 |1
--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
How unpleasant. ISTM we have a few paths forward here.
1. Add back the patterns which accept non-canonical RTL
2. Hack up reload to know about the canonicalization rule and enforce it when
we reload an address
3. Handle the rewriting by using a secondary reload
#1 and #3 are PA specific fixes. #2 means some ugly hacking in code we really
don't want to support anymore. But #2 has the advantage that it'd address this
issue on other reload targets with shadd style insns and scaled memory
indexing.
#1 is easy and John has a patch for that. I've prototyped #3, but don't really
like it. I think going with #1 on the trunk and backported to gcc-6 is
probably best.
