[Bug tree-optimization/57539] [4.9 Regression] ice in ipa_edge_duplication_hook

[jamborm at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57539

--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Created attachment 30286
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30286&action=edit
Proposed fix

I'm currently bootstrapping and testing this patch to fix the issue.  I'll give
one more thought to creating a testcase for the testsuite but constructing one
is not entirely trivial.