re PR tree-optimization/59322 (ICE with segfault on valid code at -O1, -O2, and -O3 on x86_64-linux-gnu)

	PR tree-optimization/59322
	* tree-ssa-threadedge.c (create_edge_and_update_destination_phis):
	Remove code which copied jump threading paths.

	PR tree-optimization/59322
	* gcc.c-torture/compile/pr59322.c: New test

From-SVN: r205617