re PR rtl-optimization/85393 (Miscompilation with hot/cold partitioning starting...

re PR rtl-optimization/85393 (Miscompilation with hot/cold partitioning starting with r254832)

	PR rtl-optimization/85393
	* except.h (expand_dw2_landing_pad_for_region): Remove declaration.
	* except.c (expand_dw2_landing_pad_for_region): Make static.
	* bb-reorder.c (fix_up_crossing_landing_pad): In new_bb emit just
	a label and unconditional jump to old_bb, rather than
	expand_dw2_landing_pad_for_region insn(s) and jump to single_succ
	basic block.

	* g++.dg/opt/pr85393.C: New test.
	* g++.dg/opt/pr85393-aux.cc: New file.

From-SVN: r259378