+2013-08-19 Richard Sandiford <rdsandiford@googlemail.com>
+
+ * mips.h (OP_OPTIONAL_REG): New mips_operand_type.
+ (mips_optional_operand_p): New function.
+
2013-08-04 Jürgen Urban <JuergenUrban@gmx.de>
Richard Sandiford <rdsandiford@googlemail.com>