re PR rtl-optimization/84058 (RTl partitioning fixup should drag very small blocks back to hot partition)

	PR rtl/84058
	* cfgcleanup.c (try_forward_edges): Do not give up on crossing
	jumps; choose last target that matches the criteria (i.e.
	no partition changes for non-crossing jumps).
	* cfgrtl.c (cfg_layout_redirect_edge_and_branch): Add basic
	support for redirecting crossing jumps to non-crossing.

From-SVN: r259244