re PR tree-optimization/51557 (ICE: in maybe_record_trace_start, at dwarf2cfi.c:2244 with custom flags)

	PR debug/51557
	* sel-sched-ir.c (create_copy_of_insn_rtx): Copy all notes
	other than REG_EQUAL, REG_EQUIV and REG_LABEL_OPERAND.

	* gcc.dg/pr51557.c: New test.

From-SVN: r182404