GitLab

	PR tree-optimization/48228
	* tree-vrp.c (vrp_visit_phi_node): Do not stop propagating
	for single-arg PHIs.

	* gcc.dg/Wstrict-overflow-23.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171287 138bc75d-0d04-0410-961f-82ee72b054a4