PR tree-optimization/19633
	* tree-ssa-alias.c (ptr_is_dereferenced_by): Also handle
	CALL_EXPRs.
	(maybe_create_global_var): Do not create .GLOBAL_VAR if there
	are no call-clobbered variables.
	* tree-outof-ssa.c (check_replaceable): Return false for calls
	with side-effects.

testsuite/ChangeLog

	PR tree-optimization/19633
	* gcc.dg/pr19633.c: New test.
	* gcc.dg/tree-ssa/pr19633.c: New test.

From-SVN: r94311