;; Machine description for ST Microelectronics Loongson-2E/2F. ;; Copyright (C) 2008, 2009 Free Software Foundation, Inc. ;; Contributed by CodeSourcery. ;; ;; This file is part of GCC. ;; ;; GCC is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 3, or (at your option) ;; any later version. ;; GCC is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License ;; along with GCC; see the file COPYING3. If not see ;; . ;; Mode iterators and attributes. ;; 64-bit vectors of bytes. (define_mode_iterator VB [V8QI]) ;; 64-bit vectors of halfwords. (define_mode_iterator VH [V4HI]) ;; 64-bit vectors of words. (define_mode_iterator VW [V2SI]) ;; 64-bit vectors of halfwords and bytes. (define_mode_iterator VHB [V4HI V8QI]) ;; 64-bit vectors of words and halfwords. (define_mode_iterator VWH [V2SI V4HI]) ;; 64-bit vectors of words, halfwords and bytes. (define_mode_iterator VWHB [V2SI V4HI V8QI]) ;; 64-bit vectors of words, halfwords and bytes; and DImode. (define_mode_iterator VWHBDI [V2SI V4HI V8QI DI]) ;; The Loongson instruction suffixes corresponding to the modes in the ;; VWHBDI iterator. (define_mode_attr V_suffix [(V2SI "w") (V4HI "h") (V8QI "b") (DI "d")]) ;; Given a vector type T, the mode of a vector half the size of T ;; and with the same number of elements. (define_mode_attr V_squash [(V2SI "V2HI") (V4HI "V4QI")]) ;; Given a vector type T, the mode of a vector the same size as T ;; but with half as many elements. (define_mode_attr V_stretch_half [(V2SI "DI") (V4HI "V2SI") (V8QI "V4HI")]) ;; The Loongson instruction suffixes corresponding to the transformation ;; expressed by V_stretch_half. (define_mode_attr V_stretch_half_suffix [(V2SI "wd") (V4HI "hw") (V8QI "bh")]) ;; Given a vector type T, the mode of a vector the same size as T ;; but with twice as many elements. (define_mode_attr V_squash_double [(V2SI "V4HI") (V4HI "V8QI")]) ;; The Loongson instruction suffixes corresponding to the conversions ;; specified by V_half_width. (define_mode_attr V_squash_double_suffix [(V2SI "wh") (V4HI "hb")]) ;; Move patterns. ;; Expander to legitimize moves involving values of vector modes. (define_expand "mov" [(set (match_operand:VWHB 0) (match_operand:VWHB 1))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" { if (mips_legitimize_move (mode, operands[0], operands[1])) DONE; }) ;; Handle legitimized moves between values of vector modes. (define_insn "mov_internal" [(set (match_operand:VWHB 0 "nonimmediate_operand" "=m,f,d,f, d, m, d") (match_operand:VWHB 1 "move_operand" "f,m,f,dYG,dYG,dYG,m"))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" { return mips_output_move (operands[0], operands[1]); } [(set_attr "move_type" "fpstore,fpload,mfc,mtc,move,store,load") (set_attr "mode" "DI")]) ;; Initialization of a vector. (define_expand "vec_init" [(set (match_operand:VWHB 0 "register_operand") (match_operand 1 ""))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" { mips_expand_vector_init (operands[0], operands[1]); DONE; }) ;; Instruction patterns for SIMD instructions. ;; Pack with signed saturation. (define_insn "vec_pack_ssat_" [(set (match_operand: 0 "register_operand" "=f") (vec_concat: (ss_truncate: (match_operand:VWH 1 "register_operand" "f")) (ss_truncate: (match_operand:VWH 2 "register_operand" "f"))))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "packss\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Pack with unsigned saturation. (define_insn "vec_pack_usat_" [(set (match_operand: 0 "register_operand" "=f") (vec_concat: (us_truncate: (match_operand:VH 1 "register_operand" "f")) (us_truncate: (match_operand:VH 2 "register_operand" "f"))))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "packus\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Addition, treating overflow by wraparound. (define_insn "add3" [(set (match_operand:VWHB 0 "register_operand" "=f") (plus:VWHB (match_operand:VWHB 1 "register_operand" "f") (match_operand:VWHB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "padd\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Addition of doubleword integers stored in FP registers. ;; Overflow is treated by wraparound. ;; We use 'unspec' instead of 'plus' here to avoid clash with ;; mips.md::add3. If 'plus' was used, then such instruction ;; would be recognized as adddi3 and reload would make it use ;; GPRs instead of FPRs. (define_insn "loongson_paddd" [(set (match_operand:DI 0 "register_operand" "=f") (unspec:DI [(match_operand:DI 1 "register_operand" "f") (match_operand:DI 2 "register_operand" "f")] UNSPEC_LOONGSON_PADDD))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "paddd\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Addition, treating overflow by signed saturation. (define_insn "ssadd3" [(set (match_operand:VHB 0 "register_operand" "=f") (ss_plus:VHB (match_operand:VHB 1 "register_operand" "f") (match_operand:VHB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "padds\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Addition, treating overflow by unsigned saturation. (define_insn "usadd3" [(set (match_operand:VHB 0 "register_operand" "=f") (us_plus:VHB (match_operand:VHB 1 "register_operand" "f") (match_operand:VHB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "paddus\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Logical AND NOT. (define_insn "loongson_pandn_" [(set (match_operand:VWHBDI 0 "register_operand" "=f") (and:VWHBDI (not:VWHBDI (match_operand:VWHBDI 1 "register_operand" "f")) (match_operand:VWHBDI 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pandn\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Average. (define_insn "loongson_pavg" [(set (match_operand:VHB 0 "register_operand" "=f") (unspec:VHB [(match_operand:VHB 1 "register_operand" "f") (match_operand:VHB 2 "register_operand" "f")] UNSPEC_LOONGSON_PAVG))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pavg\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Equality test. (define_insn "loongson_pcmpeq" [(set (match_operand:VWHB 0 "register_operand" "=f") (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f") (match_operand:VWHB 2 "register_operand" "f")] UNSPEC_LOONGSON_PCMPEQ))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pcmpeq\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Greater-than test. (define_insn "loongson_pcmpgt" [(set (match_operand:VWHB 0 "register_operand" "=f") (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f") (match_operand:VWHB 2 "register_operand" "f")] UNSPEC_LOONGSON_PCMPGT))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pcmpgt\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Extract halfword. (define_insn "loongson_pextr" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:SI 2 "register_operand" "f")] UNSPEC_LOONGSON_PEXTR))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pextr\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Insert halfword. (define_insn "loongson_pinsr_0" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PINSR_0))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pinsr_0\t%0,%1,%2" [(set_attr "type" "fdiv")]) (define_insn "loongson_pinsr_1" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PINSR_1))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pinsr_1\t%0,%1,%2" [(set_attr "type" "fdiv")]) (define_insn "loongson_pinsr_2" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PINSR_2))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pinsr_2\t%0,%1,%2" [(set_attr "type" "fdiv")]) (define_insn "loongson_pinsr_3" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PINSR_3))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pinsr_3\t%0,%1,%2" [(set_attr "type" "fdiv")]) ;; Multiply and add packed integers. (define_insn "loongson_pmadd" [(set (match_operand: 0 "register_operand" "=f") (unspec: [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PMADD))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmadd\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Maximum of signed halfwords. (define_insn "smax3" [(set (match_operand:VH 0 "register_operand" "=f") (smax:VH (match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmaxs\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Maximum of unsigned bytes. (define_insn "umax3" [(set (match_operand:VB 0 "register_operand" "=f") (umax:VB (match_operand:VB 1 "register_operand" "f") (match_operand:VB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmaxu\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Minimum of signed halfwords. (define_insn "smin3" [(set (match_operand:VH 0 "register_operand" "=f") (smin:VH (match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmins\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Minimum of unsigned bytes. (define_insn "umin3" [(set (match_operand:VB 0 "register_operand" "=f") (umin:VB (match_operand:VB 1 "register_operand" "f") (match_operand:VB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pminu\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Move byte mask. (define_insn "loongson_pmovmsk" [(set (match_operand:VB 0 "register_operand" "=f") (unspec:VB [(match_operand:VB 1 "register_operand" "f")] UNSPEC_LOONGSON_PMOVMSK))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmovmsk\t%0,%1" [(set_attr "type" "fabs")]) ;; Multiply unsigned integers and store high result. (define_insn "umul3_highpart" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PMULHU))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmulhu\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Multiply signed integers and store high result. (define_insn "smul3_highpart" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PMULH))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmulh\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Multiply signed integers and store low result. (define_insn "loongson_pmull" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "f") (match_operand:VH 2 "register_operand" "f")] UNSPEC_LOONGSON_PMULL))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmull\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Multiply unsigned word integers. (define_insn "loongson_pmulu" [(set (match_operand:DI 0 "register_operand" "=f") (unspec:DI [(match_operand:VW 1 "register_operand" "f") (match_operand:VW 2 "register_operand" "f")] UNSPEC_LOONGSON_PMULU))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pmulu\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Absolute difference. (define_insn "loongson_pasubub" [(set (match_operand:VB 0 "register_operand" "=f") (unspec:VB [(match_operand:VB 1 "register_operand" "f") (match_operand:VB 2 "register_operand" "f")] UNSPEC_LOONGSON_PASUBUB))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pasubub\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Sum of unsigned byte integers. (define_insn "loongson_biadd" [(set (match_operand: 0 "register_operand" "=f") (unspec: [(match_operand:VB 1 "register_operand" "f")] UNSPEC_LOONGSON_BIADD))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "biadd\t%0,%1" [(set_attr "type" "fabs")]) ;; Sum of absolute differences. (define_insn "loongson_psadbh" [(set (match_operand: 0 "register_operand" "=f") (unspec: [(match_operand:VB 1 "register_operand" "f") (match_operand:VB 2 "register_operand" "f")] UNSPEC_LOONGSON_PSADBH))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pasubub\t%0,%1,%2;biadd\t%0,%0" [(set_attr "type" "fadd")]) ;; Shuffle halfwords. (define_insn "loongson_pshufh" [(set (match_operand:VH 0 "register_operand" "=f") (unspec:VH [(match_operand:VH 1 "register_operand" "0") (match_operand:VH 2 "register_operand" "f") (match_operand:SI 3 "register_operand" "f")] UNSPEC_LOONGSON_PSHUFH))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "pshufh\t%0,%2,%3" [(set_attr "type" "fmul")]) ;; Shift left logical. (define_insn "loongson_psll" [(set (match_operand:VWH 0 "register_operand" "=f") (ashift:VWH (match_operand:VWH 1 "register_operand" "f") (match_operand:SI 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psll\t%0,%1,%2" [(set_attr "type" "fmul")]) ;; Shift right arithmetic. (define_insn "loongson_psra" [(set (match_operand:VWH 0 "register_operand" "=f") (ashiftrt:VWH (match_operand:VWH 1 "register_operand" "f") (match_operand:SI 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psra\t%0,%1,%2" [(set_attr "type" "fdiv")]) ;; Shift right logical. (define_insn "loongson_psrl" [(set (match_operand:VWH 0 "register_operand" "=f") (lshiftrt:VWH (match_operand:VWH 1 "register_operand" "f") (match_operand:SI 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psrl\t%0,%1,%2" [(set_attr "type" "fdiv")]) ;; Subtraction, treating overflow by wraparound. (define_insn "sub3" [(set (match_operand:VWHB 0 "register_operand" "=f") (minus:VWHB (match_operand:VWHB 1 "register_operand" "f") (match_operand:VWHB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psub\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Subtraction of doubleword integers stored in FP registers. ;; Overflow is treated by wraparound. ;; See loongson_paddd for the reason we use 'unspec' rather than ;; 'minus' here. (define_insn "loongson_psubd" [(set (match_operand:DI 0 "register_operand" "=f") (unspec:DI [(match_operand:DI 1 "register_operand" "f") (match_operand:DI 2 "register_operand" "f")] UNSPEC_LOONGSON_PSUBD))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psubd\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Subtraction, treating overflow by signed saturation. (define_insn "sssub3" [(set (match_operand:VHB 0 "register_operand" "=f") (ss_minus:VHB (match_operand:VHB 1 "register_operand" "f") (match_operand:VHB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psubs\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Subtraction, treating overflow by unsigned saturation. (define_insn "ussub3" [(set (match_operand:VHB 0 "register_operand" "=f") (us_minus:VHB (match_operand:VHB 1 "register_operand" "f") (match_operand:VHB 2 "register_operand" "f")))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "psubus\t%0,%1,%2" [(set_attr "type" "fadd")]) ;; Unpack high data. (define_insn "vec_interleave_high" [(set (match_operand:VWHB 0 "register_operand" "=f") (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f") (match_operand:VWHB 2 "register_operand" "f")] UNSPEC_LOONGSON_PUNPCKH))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "punpckh\t%0,%1,%2" [(set_attr "type" "fdiv")]) ;; Unpack low data. (define_insn "vec_interleave_low" [(set (match_operand:VWHB 0 "register_operand" "=f") (unspec:VWHB [(match_operand:VWHB 1 "register_operand" "f") (match_operand:VWHB 2 "register_operand" "f")] UNSPEC_LOONGSON_PUNPCKL))] "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS" "punpckl\t%0,%1,%2" [(set_attr "type" "fdiv")]) ;; Integer division and modulus. (define_insn "div3" [(set (match_operand:GPR 0 "register_operand" "=&d") (any_div:GPR (match_operand:GPR 1 "register_operand" "d") (match_operand:GPR 2 "register_operand" "d")))] "TARGET_LOONGSON_2EF" { return mips_output_division ("div.g\t%0,%1,%2", operands); } [(set_attr "type" "idiv3") (set_attr "mode" "")]) (define_insn "mod3" [(set (match_operand:GPR 0 "register_operand" "=&d") (any_mod:GPR (match_operand:GPR 1 "register_operand" "d") (match_operand:GPR 2 "register_operand" "d")))] "TARGET_LOONGSON_2EF" { return mips_output_division ("mod.g\t%0,%1,%2", operands); } [(set_attr "type" "idiv3") (set_attr "mode" "")])