re PR rtl-optimization/33648 (ICE in verify_flow_info for -fmodulo-sched -freorder-blocks-and-partition)

	PR rtl-optimization/33648
	* cfgrtl.c (cfg_layout_split_edge): Initialize BB_PARTITION of
	the newly created basic block.

	* gcc.dg/pr33648.c: New test.

From-SVN: r129837