PR tree-optimization/42508
	* tree-sra.c (convert_callers): Check for recursive call
	by comparing cgraph nodes instead of decls.
	(modify_function): Call ipa_modify_formal_parameters also
	on all same_body aliases.

	* g++.dg/opt/pr42508.C: New test.

	* cgraphunit.c (cgraph_materialize_all_clones): Compare
	cgraph nodes when checking for same_body aliases.

From-SVN: r155640