mips.c (mips_dwarf_frame_reg_mode): Replace TARGET_FLOAT64 with !TARGET_FLOAT32, thus handling both fp64 and fpxx modes.

	* config/mips/mips.c (mips_dwarf_frame_reg_mode): Replace
	TARGET_FLOAT64 with !TARGET_FLOAT32, thus handling both fp64
	and fpxx modes.

	* g++.dg/eh/o32-fp.C: New.
	* gcc.target/mips/dwarfregtable-1.c: New.
	* gcc.target/mips/dwarfregtable-2.c: New.
	* gcc.target/mips/dwarfregtable-3.c: New.
	* gcc.target/mips/dwarfregtable-4.c: New.
	* gcc.target/mips/dwarfregtable.h: New.

From-SVN: r271331