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gcc/ * doc/tm.texi (DWARF_ALT_FRAME_RETURN_COLUMN): Do not require DWARF_FRAME_RETURN_COLUMN to be a general register. * dwarf2out.c (init_return_column_size): New function, split from... (expand_builtin_init_dwarf_reg_sizes): ...here. Allow both DWARF_FRAME_RETURN_COLUMN and DWARF_ALT_FRAME_RETURN_COLUMN to be nongeneral registers. * config/m68k/m68k.h (DWARF_FRAME_REGNUM): Only map FP and integer registers. (DWARF_FRAME_REGISTERS, DWARF_FRAME_RETURN_COLUMN): Define. (DWARF_ALT_FRAME_RETURN_COLUMN): Define. From-SVN: r121593
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