[Bug tree-optimization/49452] [4.7 regression] comp-goto-2.c regresses in testing

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49452

--- Comment #21 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-09-14 06:48:01 UTC ---
> All callee saved registers should never changed after function call. Here fp
> has been changed is not because it is after a function call, it is because it
> is after the target of non local goto. I'm not familiar with the implementation
> of non local goto, but I guess there is some convention/protocol defines which
> registers may be changed after the target of a non local goto.

That's not the problem.  The problem is that the blockage isn't honored.