LTO and other test failures on trunk

[David Malcolm]

On Mon, 2018-06-18 at 10:22 -0600, Martin Sebor wrote:
> David,
> 
> Have you been able to reproduce the jit test failures below on
> tor?  Is there some information I can get you from my builds to
> help you debug it?

Thanks for pointing it out.  I've started seeing it on my machine.

They appear to have been due to recent(?) changes to IPA; I've posted a
patch for the issue here:
  "[PATCH] Fix IPA crash in libgccjit"
    https://gcc.gnu.org/ml/gcc-patches/2018-06/msg01282.html

Dave