* ipa-icf-gimple.c (func_checker::compare_variable_decl):
	Validate variable alignment.
	* ipa-icf.c (sem_function::equals_private): Be more precise
	about non-common function attributes.
	(sem_variable::equals): Likewise.
	* gcc.target/i386/stackalign/longlong-2.c: Omit ICF.
	* g++.dg/ipa/pr63595.C: Update expected results.

From-SVN: r221080