gcc/config/riscv/riscv-vector-switch.def

   1 /* Machine mode switch for RISC-V 'V' Extension for GNU compiler.
   2    Copyright (C) 2022-2022 Free Software Foundation, Inc.
   3    Contributed by Ju-Zhe Zhong (juzhe.zhong@rivai.ai), RiVAI Technologies Ltd.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* This file is enable or disable the RVV modes according '-march'.  */
  22
  23 /* According to rvv-intrinsic and RISC-V 'V' Extension ISA document:
  24    https://github.com/riscv-non-isa/rvv-intrinsic-doc/blob/master/rvv-intrinsic-rfc.md.
  25    https://github.com/riscv/riscv-v-spec/blob/master/v-spec.adoc.
  26
  27    Data Types
  28    Encode SEW and LMUL into data types.
  29    We enforce the constraint LMUL ≥ SEW/ELEN in the implementation.
  30    There are the following data types for MIN_VLEN > 32.
  31
  32 Note: N/A means the corresponding vector type is disabled.
  33
  34 |Types   |LMUL=1|LMUL=2 |LMUL=4 |LMUL=8 |LMUL=1/2|LMUL=1/4|LMUL=1/8|
  35 |int64_t |VNx1DI|VNx2DI |VNx4DI |VNx8DI |N/A     |N/A     |N/A     |
  36 |uint64_t|VNx1DI|VNx2DI |VNx4DI |VNx8DI |N/A     |N/A     |N/A     |
  37 |int32_t |VNx2SI|VNx4SI |VNx8SI |VNx16SI|VNx1SI  |N/A     |N/A     |
  38 |uint32_t|VNx2SI|VNx4SI |VNx8SI |VNx16SI|VNx1SI  |N/A     |N/A     |
  39 |int16_t |VNx4HI|VNx8HI |VNx16HI|VNx32HI|VNx2HI  |VNx1HI  |N/A     |
  40 |uint16_t|VNx4HI|VNx8HI |VNx16HI|VNx32HI|VNx2HI  |VNx1HI  |N/A     |
  41 |int8_t  |VNx8QI|VNx16QI|VNx32QI|VNx64QI|VNx4QI  |VNx2QI  |VNx1QI  |
  42 |uint8_t |VNx8QI|VNx16QI|VNx32QI|VNx64QI|VNx4QI  |VNx2QI  |VNx1QI  |
  43 |float64 |VNx1DF|VNx2DF |VNx4DF |VNx8DF |N/A     |N/A     |N/A     |
  44 |float32 |VNx2SF|VNx4SF |VNx8SF |VNx16SF|VNx1SF  |N/A     |N/A     |
  45 |float16 |VNx4HF|VNx8HF |VNx16HF|VNx32HF|VNx2HF  |VNx1HF  |N/A     |
  46
  47 Mask Types Encode the ratio of SEW/LMUL into the
  48 mask types. There are the following mask types.
  49
  50 n = SEW/LMUL
  51
  52 |Types|n=1    |n=2    |n=4    |n=8   |n=16  |n=32  |n=64  |
  53 |bool |VNx64BI|VNx32BI|VNx16BI|VNx8BI|VNx4BI|VNx2BI|VNx1BI|
  54
  55 There are the following data types for MIN_VLEN = 32.
  56
  57 |Types   |LMUL=1|LMUL=2|LMUL=4 |LMUL=8 |LMUL=1/2|LMUL=1/4|LMUL=1/8|
  58 |int64_t |N/A   |N/A   |N/A    |N/A    |N/A     |N/A     |N/A     |
  59 |uint64_t|N/A   |N/A   |N/A    |N/A    |N/A     |N/A     |N/A     |
  60 |int32_t |VNx1SI|VNx2SI|VNx4SI |VNx8SI |N/A     |N/A     |N/A     |
  61 |uint32_t|VNx1SI|VNx2SI|VNx4SI |VNx8SI |N/A     |N/A     |N/A     |
  62 |int16_t |VNx2HI|VNx4HI|VNx8HI |VNx16HI|VNx1HI  |N/A     |N/A     |
  63 |uint16_t|VNx2HI|VNx4HI|VNx8HI |VNx16HI|VNx1HI  |N/A     |N/A     |
  64 |int8_t  |VNx4QI|VNx8QI|VNx16QI|VNx32QI|VNx2QI  |VNx1QI  |N/A     |
  65 |uint8_t |VNx4QI|VNx8QI|VNx16QI|VNx32QI|VNx2QI  |VNx1QI  |N/A     |
  66 |float64 |N/A   |N/A   |N/A    |N/A    |N/A     |N/A     |N/A     |
  67 |float32 |VNx1SF|VNx2SF|VNx4SF |VNx8SF |N/A     |N/A     |N/A     |
  68 |float16 |VNx2HF|VNx4HF|VNx8HF |VNx16HF|VNx1HF  |N/A     |N/A     |
  69
  70 Mask Types Encode the ratio of SEW/LMUL into the
  71 mask types. There are the following mask types.
  72
  73 n = SEW/LMUL
  74
  75 |Types|n=1    |n=2    |n=4   |n=8   |n=16  |n=32  |n=64|
  76 |bool |VNx32BI|VNx16BI|VNx8BI|VNx4BI|VNx2BI|VNx1BI|N/A |
  77
  78 TODO: FP16 vector needs support of 'zvfh', we don't support it yet.  */
  79
  80 /* Return 'REQUIREMENT' for machine_mode 'MODE'.
  81    For example: 'MODE' = VNx64BImode needs TARGET_MIN_VLEN > 32.  */
  82 #ifndef ENTRY
  83 #define ENTRY(MODE, REQUIREMENT)
  84 #endif
  85 /* Flag of FP32 vector.  */
  86 #ifndef TARGET_VECTOR_FP32
  87 #define TARGET_VECTOR_FP32                                                     \
  88   (TARGET_HARD_FLOAT && (TARGET_VECTOR_ELEN_FP_32 || TARGET_VECTOR_ELEN_FP_64))
  89 #endif
  90 /* Flag of FP64 vector.  */
  91 #ifndef TARGET_VECTOR_FP64
  92 #define TARGET_VECTOR_FP64                                                     \
  93   (TARGET_DOUBLE_FLOAT && TARGET_VECTOR_ELEN_FP_64 && (TARGET_MIN_VLEN > 32))
  94 #endif
  95
  96 /* Mask modes. Disable VNx64BImode when TARGET_MIN_VLEN == 32.  */
  97 ENTRY (VNx64BI, TARGET_MIN_VLEN > 32)
  98 ENTRY (VNx32BI, true)
  99 ENTRY (VNx16BI, true)
 100 ENTRY (VNx8BI, true)
 101 ENTRY (VNx4BI, true)
 102 ENTRY (VNx2BI, true)
 103 ENTRY (VNx1BI, true)
 104
 105 /* SEW = 8. Disable VNx64QImode when TARGET_MIN_VLEN == 32.  */
 106 ENTRY (VNx64QI, TARGET_MIN_VLEN > 32)
 107 ENTRY (VNx32QI, true)
 108 ENTRY (VNx16QI, true)
 109 ENTRY (VNx8QI, true)
 110 ENTRY (VNx4QI, true)
 111 ENTRY (VNx2QI, true)
 112 ENTRY (VNx1QI, true)
 113
 114 /* SEW = 16. Disable VNx32HImode when TARGET_MIN_VLEN == 32.  */
 115 ENTRY (VNx32HI, TARGET_MIN_VLEN > 32)
 116 ENTRY (VNx16HI, true)
 117 ENTRY (VNx8HI, true)
 118 ENTRY (VNx4HI, true)
 119 ENTRY (VNx2HI, true)
 120 ENTRY (VNx1HI, true)
 121
 122 /* TODO:Disable all FP16 vector, enable them when 'zvfh' is supported.  */
 123 ENTRY (VNx32HF, false)
 124 ENTRY (VNx16HF, false)
 125 ENTRY (VNx8HF, false)
 126 ENTRY (VNx4HF, false)
 127 ENTRY (VNx2HF, false)
 128 ENTRY (VNx1HF, false)
 129
 130 /* SEW = 32. Disable VNx16SImode when TARGET_MIN_VLEN == 32.
 131    For single-precision floating-point, we need TARGET_VECTOR_FP32 ==
 132    RVV_ENABLE.  */
 133 ENTRY (VNx16SI, TARGET_MIN_VLEN > 32)
 134 ENTRY (VNx8SI, true)
 135 ENTRY (VNx4SI, true)
 136 ENTRY (VNx2SI, true)
 137 ENTRY (VNx1SI, true)
 138
 139 ENTRY (VNx16SF, TARGET_VECTOR_FP32 && (TARGET_MIN_VLEN > 32))
 140 ENTRY (VNx8SF, TARGET_VECTOR_FP32)
 141 ENTRY (VNx4SF, TARGET_VECTOR_FP32)
 142 ENTRY (VNx2SF, TARGET_VECTOR_FP32)
 143 ENTRY (VNx1SF, TARGET_VECTOR_FP32)
 144
 145 /* SEW = 64. Enable when TARGET_MIN_VLEN > 32.
 146    For double-precision floating-point, we need TARGET_VECTOR_FP64 ==
 147    RVV_ENABLE.  */
 148 ENTRY (VNx8DI, TARGET_MIN_VLEN > 32)
 149 ENTRY (VNx4DI, TARGET_MIN_VLEN > 32)
 150 ENTRY (VNx2DI, TARGET_MIN_VLEN > 32)
 151 ENTRY (VNx1DI, TARGET_MIN_VLEN > 32)
 152
 153 ENTRY (VNx8DF, TARGET_VECTOR_FP64 && (TARGET_MIN_VLEN > 32))
 154 ENTRY (VNx4DF, TARGET_VECTOR_FP64)
 155 ENTRY (VNx2DF, TARGET_VECTOR_FP64)
 156 ENTRY (VNx1DF, TARGET_VECTOR_FP64)
 157
 158 #undef TARGET_VECTOR_FP32
 159 #undef TARGET_VECTOR_FP64
 160 #undef ENTRY