File size: 5,083 Bytes
8b7c501 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 |
// Copyright 2020 Google LLC
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.
#include <xnnpack/assembly.h>
# void xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_1x16__asm_aarch64_neonfp16arith_ld64(
# size_t mr, (x0) - unused. mr = 1
# size_t nc, x1
# size_t kc, x2 / x0
# const void* restrict a, x3
# size_t a_stride, (x4) - unused
# const void* restrict w, x5
# void* restrict c, x6
# size_t cm_stride, (x7) - unused
# size_t cn_stride, [sp] -> x14
$if INC:
# const float* restrict acc, [sp + 8] -> x15
# const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) [sp + 16] -> (x8)
$else:
# const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) [sp + 8] -> (x8)
# d8-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS.
// Register usage
// A0 x8 v0
// B x5 v24 v25 v26 v27 v28 v29 v30 v31
// C0 x6 v16 v17 v18 v19 v20 v21 v22 v23
// clamp v4, v5
BEGIN_FUNCTION xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_1x16__asm_aarch64_neonfp16arith_ld64
$if INC:
# Load cn_stride, acc
LDP x14, x15, [sp]
# Load params pointer
LDR x8, [sp, 16]
$else:
# Load cn_stride, params pointer
LDP x14, x8, [sp]
# Load params values
LD2R {v4.8h, v5.8h}, [x8]
0:
$if INC:
# Load initial accumulators
LDP q16, q17, [x15], 32
$else:
# Load initial bias from w into accumulators
LDP q16, q17, [x5], 32
MOVI v18.8h, 0 // 4 sets of C for pipelining FMLA
MOVI v19.8h, 0
MOVI v20.8h, 0
MOVI v21.8h, 0
MOVI v22.8h, 0
MOVI v23.8h, 0
# Is there at least 4 halffloats (8 bytes)
SUBS x0, x2, 8 // k = kc - 8
B.LO 3f
.p2align 3
# Main loop - 4 halffloats of A (8 bytes)
1:
LDR d0, [x3], 8
LDR q24, [x5, 0]
LDR q25, [x5, 16]
LDR q26, [x5, 32]
LDR q27, [x5, 48]
LDR q28, [x5, 64]
LDR q29, [x5, 80]
LDR q30, [x5, 96]
LDR q31, [x5, 112]
SUBS x0, x0, 8
FMLA v16.8h, v24.8h, v0.h[0]
FMLA v17.8h, v25.8h, v0.h[0]
FMLA v18.8h, v26.8h, v0.h[1]
FMLA v19.8h, v27.8h, v0.h[1]
FMLA v20.8h, v28.8h, v0.h[2]
FMLA v21.8h, v29.8h, v0.h[2]
FMLA v22.8h, v30.8h, v0.h[3]
FMLA v23.8h, v31.8h, v0.h[3]
ADD x5, x5, 128
B.HS 1b
# Is there a remainder- 1 to 3 halffloats of A (2 to 6 bytes)
ANDS x0, x0, 7
B.NE 3f
2:
FADD v16.8h, v16.8h, v18.8h
FADD v17.8h, v17.8h, v19.8h
FADD v20.8h, v20.8h, v22.8h
FADD v21.8h, v21.8h, v23.8h
FADD v16.8h, v16.8h, v20.8h
FADD v17.8h, v17.8h, v21.8h
SUBS x1, x1, 16
# Clamp
FMAX v16.8h, v16.8h, v4.8h
FMAX v17.8h, v17.8h, v4.8h
FMIN v16.8h, v16.8h, v5.8h
FMIN v17.8h, v17.8h, v5.8h
# Store full 1 x 16
B.LO 5f
STP q16, q17, [x6]
ADD x6, x6, x14
SUB x3, x3, x2 // a0 -= kc
B.HI 0b
RET
# Remainder- 1 to 3 halffloats of A (2 to 6 bytes)
3:
TBZ x0, 2, 4f
LDR s0, [x3], 4
LDR q24, [x5, 0]
LDR q25, [x5, 16]
LDR q26, [x5, 32]
LDR q27, [x5, 48]
FMLA v16.8h, v24.8h, v0.h[0]
FMLA v17.8h, v25.8h, v0.h[0]
FMLA v18.8h, v26.8h, v0.h[1]
FMLA v19.8h, v27.8h, v0.h[1]
ADD x5, x5, 64
TBZ x0, 1, 2b
4:
LDR h0, [x3], 2
LDR q24, [x5, 0]
LDR q25, [x5, 16]
FMLA v16.8h, v24.8h, v0.h[0]
FMLA v17.8h, v25.8h, v0.h[0]
ADD x5, x5, 32
B 2b
# Store odd channels
5:
TBZ x1, 3, 6f
STR q16, [x6], 16
MOV v16.16b, v17.16b
6:
TBZ x1, 2, 7f
STR d16, [x6], 8
DUP d16, v16.d[1]
7:
TBZ x1, 1, 8f
STR s16, [x6], 4
DUP s16, v16.s[1]
8:
TBZ x1, 0, 9f
STR h16, [x6]
9:
RET
END_FUNCTION xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_1x16__asm_aarch64_neonfp16arith_ld64
#ifdef __ELF__
.section ".note.GNU-stack","",%progbits
#endif
|