2016-09-15  Chung-Lin Tang  <cltang@codesourcery.com>

	PR fortran/72743
	* ipa-icf.c (set_alias_uids): New function.
	(sem_variable::merge): Use set_alias_uids to set DECL_PT_UID of
	all the merged variable's referring aliases.

	testsuite/
	* gfortran.dg/goacc/pr72743.f90: New test.

From-SVN: r240155