[PATCH] PR69195, Reload confused by invalid reg equivs

[Jakub Jelinek]

On Sat, Mar 12, 2016 at 09:43:50AM +1030, Alan Modra wrote:
> The underlying problem happens somewhere in tree-ssa-dse.c.  So we get
> an indirect jump to a random location instead of a jump to 0.

Well, the testcase is there just to make sure we don't ICE on it.
And, changing just DSE can't be a complete solution, because one can use
uninitialized var from the beginning:
int
foo (void)
{
  int x;
  goto *&x;
}

	Jakub