[Bug debug/51471] [4.7 Regression] gcc.c-torture/execute/20040811-1.c and gcc.c-torture/execute/vla-dealloc-1.c fails at -O3 -g on mips64-linux-gnu

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51471

--- Comment #6 from Mikael Pettersson <mikpe at it dot uu.se> 2011-12-12 13:10:33 UTC ---
(In reply to comment #5)
> So my question is: what is the mechanism that should prevent epilogue insns
> from being moved to before the epilogue?

A full compiler barrier?  See PR38644 for an epilogue scheduling bug on ARM
Thumb-1 that got fixed by prefixing the epilogue with a barrier.  That PR also
refers to an older PowerPC bug that was fixed in a similar way.