* tree.h (BLOCK_DEAD): New macro.
	(struct tree_block): New flag, dead_flag.
	* print-tree.c (print_node, case 'b'): Print missing fields.
	* emit-rtl.c (remove_unnecessary_notes): Set BLOCK_DEAD.
	* function.c (identify_blocks): Enable test for misplaced notes.
	(all_blocks): Skip BLOCK_DEAD blocks.
	* integrate.c (integrate_decl_tree): Likewise.

From-SVN: r40039