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[Bug middle-end/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 10:50:06 +0000
- Subject: [Bug middle-end/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
--- Comment #18 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-06 10:49:24 UTC ---
Hm, the argument setup for the tailcall clobbers the incoming stack argument.
And without TER we do not overlap argument setup with the loads from the
incoming stack argument.