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* libgcc2.c: Change all conditionals testing LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96 to == 80. * libgcc2.h: Likewise. * config/i386/i386.c (ix86_init_mmx_sse_builtins): Set TYPE_PRECISION of float80_type to 80. * config/ia64/ia64.c (ia64_init_builtins): Set TYPE_PRECISION of fpreg_type and float80_type to 80. * config/i386/i386.h, config/ia64/ia64.h, config/m68k/m68k.h * config/m68k/netbsd-elf.h: Change LONG_DOUBLE_TYPE_SIZE and possibly LIBGCC2_LONG_DOUBLE_TYPE_SIZE to evaluate to 80 whenever they would formerly have evaluated to 96. * config/i386/sco5.h: Remove unnecessary redefinition of LONG_DOUBLE_TYPE_SIZE. * doc/rtl.texi: Clarify uses of XFmode and TFmode. * config/i386/i386-modes.def: Use FRACTIONAL_FLOAT_MODE for XFmode, with a bitsize of 80. Update commentary. * config/ia64/ia64-modes.def: Likewise. * config/m68k/m68k-modes.def: Likewise. From-SVN: r85232
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