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Hello, Here is the patch to add new machine modes for signed/unsigned fractional and accumulator data. The number of integral and fractional bits in these machine modes can be changed by using ADJUST_IBIT and ADJUST_FBIT in the backend's ???-modes.def. Thanks! Regards, Chao-ying 2006-11-03 Chao-ying Fu <fu@mips.com> * genmodes.c (struct mode_data): Add ibit and fbit fields. (blank_mode): Initialize ibit and fbit. (adj_ibit, adj_fbit): New to adjust ibit and fbit. (vector_class): Handle MODE_FRACT, MODE_UFRACT, MODE_ACCUM, MODE_UACCUM. (new_adjust): Change required_class to required_class_from and required_class_to for testing within a range. (complete_mode): Handle MODE_FRACT, MODE_UFRACT, MODE_ACCUM, MODE_UACCUM, MODE_VECTOR_FRACT, MODE_VECTOR_UFRACT, MODE_VECTOR_ACCUM, MODE_VECTOR_UACCUM. (FRACT_MODE, UFRACT_MODE, ACCUM_MODE, UACCUM_MODE): New. (make_fixed_point_mode): New. (_ADD_ADJUST): Change C to C1 and C2. (ADJUST_BYTESIZE, ADJUST_ALIGNMENT, ADJUST_FLOAT_FORMAT): Change to use a range for machine classes. (ADJUST_IBIT, ADJUST_FBIT): New. (emit_insn_modes_h): Output defines of CONST_MODE_IBIT and CONST_MODE_FBIT. (emit_mode_adjustments): Handle MODE_VECTOR_FRACT, MODE_VECTOR_UFRACT, MODE_VECTOR_ACCUM, MODE_VECTOR_UACCUM. Emit adjustment for ibit and fbit. (emit_mode_ibit, emit_mode_fbit): New. (emit_insn_modes_c): Add emit_mode_ibit and emit_mode_fbit. * mode-classes.def (MODE_FRACT, MODE_UFRACT, MODE_ACCUM, MODE_UACCUM, MODE_VECTOR_FRACT, MODE_VECTOR_UFRACT, MODE_VECTOR_ACCUM, MODE_VECTOR_UACCUM): New mode classes. * machmode.def: Add QQ, HQ, SQ, DQ, TQ, UQQ, UHQ, USQ, UDQ, UTQ, HA, SA, DA, TA, UHA, USA, UDA, UTA. * machmode.h (VECTOR_MODE_P): Test MODE_VECTOR_FRACT, MODE_VECTOR_UFRACT, MODE_VECTOR_ACCUM, MODE_VECTOR_UACCUM. (CLASS_HAS_WIDER_MODES_P): Test MODE_FRACT, MODE_UFRACT, MODE_ACCUM, MODE_UACCUM. (FRACT_MODE_P, UFRACT_MODE_P, ALL_FRACT_MODE_P, ACCUM_MODE_P, UACCUM_MODE_P, ALL_ACCUM_MODE_P, SIGNED_FIXED_POINT_MODE_P, UNSIGNED_FIXED_POINT_MODE_P, ALL_FIXED_POINT_MODE_P): New. * doc/rtl.texi (Machine Modes): Document QQ, HQ, SQ, DQ, TQ, UQQ, UHQ, USQ, UDQ, UTQ, HA, SA, DA, TA, UHA, USA, UDA, and UTAmodes. Document MODE_FRACT, MODE_UFRACT, MODE_ACCUM, MODE_UACCUM. Document GET_MODE_IBIT, and GET_MODE_FBIT.
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