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[Bug c++/49519] [4.7 Regression] Revision 175272 miscompiled 447.dealII in SPEC CPU 2006
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 6 Jul 2011 08:39:59 +0000
- Subject: [Bug c++/49519] [4.7 Regression] Revision 175272 miscompiled 447.dealII in SPEC CPU 2006
- Auto-submitted: auto-generated
- References: <bug-49519-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49519
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |ebotcazou at gcc dot
| |gnu.org
--- Comment #12 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-06 08:38:56 UTC ---
If it happens that the MEM_REF case (supposedly with the adjusted base pointer)
does not work while the non-MEM_REF case works then this looks like a
latent problem in the tailcall code to me. I see nothing wrong with the
GIMPLE itself. Eventually we can adjust code-gen for the MEM_REF case to
match that of the pure component-ref one, but that would again just paper
over the issue.