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// Copyright 2019 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.
$assert DATATYPE in ["F32", "QC8", "QC4"]
#include <xnnpack/assembly.h>
$DATATYPE_SPEC = {"F32": "f32", "QC8": "f32_qc8w", "QC4": "f32_qc4w"}[DATATYPE]
# void xnn_${DATATYPE_SPEC}_gemm${"inc" if INC else ""}_minmax_ukernel_6x8__asm_aarch64_neonfma_ld64(
# size_t mr, x0
# size_t nc, x1
# size_t kc, x2 / x0
# const float* a, x3
# size_t a_stride, x4
# const float* w, x5
# float* c, x6
# size_t cm_stride, x7
# size_t cn_stride, [sp] -> (x0)
$if INC:
# const float* acc, [sp + 8] -> x15
# const xnn_f32_minmax_params* params) [sp + 16] -> (x8)
$elif DATATYPE == "QC4":
# const xnn_f32_qc4w_minmax_params* params) [sp + 8] -> (x8)
$else:
# const xnn_f32_minmax_params* params) [sp + 8] -> (x8)
# d8-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS.
# Register usage
# A0 x3 v0
# A1 x9 v1
# A2 x10 v2
# A3 x11 v3
# A4 x12 v4
# A5 x4 v5
# B x5 v16 v17 v18 v19
# C0 x6 v20 v21
# C1 x16 v22 v23
# C2 x17 v24 v25
# C3 x14 v26 v27
# C4 x13 v28 v29
# C5 x7 v30 v31
# Clamp v6 v7
$if DATATYPE == "QC4":
# Zerop/mask v8 v9
# Unused v10 v11 v12 v13 v14 v15
$else:
# Unused v8 v9 v10 v11 v12 v13 v14 v15
BEGIN_FUNCTION xnn_${DATATYPE_SPEC}_gemm${"inc" if INC else ""}_minmax_ukernel_6x8__asm_aarch64_neonfma_ld64
$if INC:
# Load acc, params pointer
LDP x15, x8, [sp, 8]
$else:
# Load params pointer
LDR x8, [sp, 8]
# Clamp A and C pointers
CMP x0, 2 // if mr < 2
ADD x9, x3, x4 // a1 = a0 + a_stride
ADD x16, x6, x7 // c1 = c0 + cm_stride
CSEL x9, x3, x9, LO // a1 = a0
CSEL x16, x6, x16, LO // c1 = c0
$if DATATYPE == "QC4":
STP d8, d9, [sp, -16]! // Save d8-d9 on stack
# Load min/max/zerop values
LD3R {v6.4s, v7.4s, v8.4s}, [x8]
MOVI v9.16b, 15
$else:
# Load min/max values
LD2R {v6.4s, v7.4s}, [x8]
ADD x10, x9, x4 // a2 = a1 + a_stride
ADD x17, x16, x7 // c2 = c1 + cm_stride
// if mr <= 2
CSEL x10, x9, x10, LS // a2 = a1
CSEL x17, x16, x17, LS // c2 = c1
CMP x0, 4 // if mr < 4
ADD x11, x10, x4 // a3 = a2 + a_stride
ADD x14, x17, x7 // c3 = c2 + cm_stride
CSEL x11, x10, x11, LO // a3 = a2
CSEL x14, x17, x14, LO // c3 = c2
ADD x12, x11, x4 // a4 = a3 + a_stride
ADD x13, x14, x7 // c4 = c3 + cm_stride
// if mr <= 4
CSEL x12, x11, x12, LS // a4 = a3
CSEL x13, x14, x13, LS // c4 = c3
CMP x0, 6 // if mr < 6
ADD x4, x12, x4 // a5 = a4 + a_stride
ADD x7, x13, x7 // c5 = c4 + cm_stride
CSEL x4, x12, x4, LO // a5 = a4
CSEL x7, x13, x7, LO // c5 = c4
0:
$if INC:
# Load initial accumulators
LDP q20, q21, [x15], 32
LDP q22, q23, [x15], 32
LDP q24, q25, [x15], 32
LDP q26, q27, [x15], 32
LDP q28, q29, [x15], 32
LDP q30, q31, [x15], 32
PRFM PLDL1KEEP, [x5, 0] // Prefetch B
PRFM PLDL1KEEP, [x5, 64]
PRFM PLDL1KEEP, [x5, 128]
PRFM PLDL1KEEP, [x5, 192]
PRFM PLDL1KEEP, [x3] // Prefetch A
PRFM PLDL1KEEP, [x9]
PRFM PLDL1KEEP, [x10]
PRFM PLDL1KEEP, [x11]
PRFM PLDL1KEEP, [x12]
PRFM PLDL1KEEP, [x4]
$else:
# Load initial bias from w into accumulators
LDP q20, q21, [x5], 32
MOV v22.16b, v20.16b
PRFM PLDL1KEEP, [x5, 0] // Prefetch B
MOV v23.16b, v21.16b
PRFM PLDL1KEEP, [x5, 64]
MOV v24.16b, v20.16b
PRFM PLDL1KEEP, [x5, 128]
MOV v25.16b, v21.16b
PRFM PLDL1KEEP, [x5, 192]
MOV v26.16b, v20.16b
PRFM PLDL1KEEP, [x3] // Prefetch A
MOV v27.16b, v21.16b
PRFM PLDL1KEEP, [x9]
MOV v28.16b, v20.16b
PRFM PLDL1KEEP, [x10]
MOV v29.16b, v21.16b
PRFM PLDL1KEEP, [x11]
MOV v30.16b, v20.16b
PRFM PLDL1KEEP, [x12]
MOV v31.16b, v21.16b
PRFM PLDL1KEEP, [x4]
# Is there at least 2 floats (8 bytes) for main loop?
SUBS x0, x2, 8 // k = kc - 8
B.LO 3f
# Main loop - 2 floats of A (8 bytes)
# 24 FMA + 6 LD64 A + 2 LDP B
1:
LDR d0, [x3], 8
$if DATATYPE == "F32":
LDP q16, q17, [x5], 32 // 8 F32 weights
$elif DATATYPE == "QC4":
LDR d18, [x5], 8 // 16 QC4 weights
AND v17.8b, v18.8b, v9.8b // first set of 8 weights
USHR v19.8b, v18.8b, 4 // second set of 8 weights
SADDW v17.8h, v8.8h, v17.8b
SADDW v19.8h, v8.8h, v19.8b
SXTL v16.4s, v17.4h
SXTL2 v17.4s, v17.8h
SXTL v18.4s, v19.4h
SXTL2 v19.4s, v19.8h
SCVTF v16.4s, v16.4s
SCVTF v17.4s, v17.4s
SCVTF v18.4s, v18.4s
SCVTF v19.4s, v19.4s
$else:
LDR q18, [x5], 16 // 16 QC8 weights
SXTL v17.8h, v18.8b
SXTL2 v19.8h, v18.16b
SXTL v16.4s, v17.4h
SXTL2 v17.4s, v17.8h
SXTL v18.4s, v19.4h
SXTL2 v19.4s, v19.8h
SCVTF v16.4s, v16.4s
SCVTF v17.4s, v17.4s
SCVTF v18.4s, v18.4s
SCVTF v19.4s, v19.4s
LDR d1, [x9], 8
LDR d2, [x10], 8
LDR d3, [x11], 8
LDR d4, [x12], 8
LDR d5, [x4], 8
FMLA v20.4s, v16.4s, v0.s[0]
FMLA v22.4s, v16.4s, v1.s[0]
FMLA v24.4s, v16.4s, v2.s[0]
FMLA v26.4s, v16.4s, v3.s[0]
$if DATATYPE == "F32":
LDP q18, q19, [x5], 32
FMLA v28.4s, v16.4s, v4.s[0]
FMLA v30.4s, v16.4s, v5.s[0]
FMLA v21.4s, v17.4s, v0.s[0]
FMLA v23.4s, v17.4s, v1.s[0]
FMLA v25.4s, v17.4s, v2.s[0]
FMLA v27.4s, v17.4s, v3.s[0]
FMLA v29.4s, v17.4s, v4.s[0]
FMLA v31.4s, v17.4s, v5.s[0]
FMLA v20.4s, v18.4s, v0.s[1]
FMLA v22.4s, v18.4s, v1.s[1]
FMLA v24.4s, v18.4s, v2.s[1]
FMLA v26.4s, v18.4s, v3.s[1]
FMLA v28.4s, v18.4s, v4.s[1]
FMLA v30.4s, v18.4s, v5.s[1]
FMLA v21.4s, v19.4s, v0.s[1]
FMLA v23.4s, v19.4s, v1.s[1]
FMLA v25.4s, v19.4s, v2.s[1]
FMLA v27.4s, v19.4s, v3.s[1]
SUBS x0, x0, 8
FMLA v29.4s, v19.4s, v4.s[1]
FMLA v31.4s, v19.4s, v5.s[1]
B.HS 1b
# Is there a remainder?- 1 float of A (4 bytes)
TBNZ x0, 2, 3f
2:
$if DATATYPE in ["QC8", "QC4"]:
# Scale
LDP q16, q17, [x5], 32
FMUL v20.4s, v20.4s, v16.4s
FMUL v21.4s, v21.4s, v17.4s
FMUL v22.4s, v22.4s, v16.4s
FMUL v23.4s, v23.4s, v17.4s
FMUL v24.4s, v24.4s, v16.4s
FMUL v25.4s, v25.4s, v17.4s
FMUL v26.4s, v26.4s, v16.4s
FMUL v27.4s, v27.4s, v17.4s
FMUL v28.4s, v28.4s, v16.4s
FMUL v29.4s, v29.4s, v17.4s
FMUL v30.4s, v30.4s, v16.4s
FMUL v31.4s, v31.4s, v17.4s
# Clamp
FMAX v20.4s, v20.4s, v6.4s
# Load cn_stride
$if DATATYPE == "QC4":
LDR x0, [sp, 16]
$else:
LDR x0, [sp]
FMAX v21.4s, v21.4s, v6.4s
FMAX v22.4s, v22.4s, v6.4s
FMAX v23.4s, v23.4s, v6.4s
FMAX v24.4s, v24.4s, v6.4s
FMAX v25.4s, v25.4s, v6.4s
FMAX v26.4s, v26.4s, v6.4s
FMAX v27.4s, v27.4s, v6.4s
FMAX v28.4s, v28.4s, v6.4s
FMAX v29.4s, v29.4s, v6.4s
FMAX v30.4s, v30.4s, v6.4s
FMAX v31.4s, v31.4s, v6.4s
SUBS x1, x1, 8
FMIN v20.4s, v20.4s, v7.4s
FMIN v21.4s, v21.4s, v7.4s
FMIN v22.4s, v22.4s, v7.4s
FMIN v23.4s, v23.4s, v7.4s
FMIN v24.4s, v24.4s, v7.4s
FMIN v25.4s, v25.4s, v7.4s
FMIN v26.4s, v26.4s, v7.4s
FMIN v27.4s, v27.4s, v7.4s
FMIN v28.4s, v28.4s, v7.4s
FMIN v29.4s, v29.4s, v7.4s
FMIN v30.4s, v30.4s, v7.4s
FMIN v31.4s, v31.4s, v7.4s
# Store full 6 x 8
B.LO 4f
$if INC:
ST1 {v30.16b, v31.16b}, [x7], x0
SUB x3, x3, x2 // a0 -= kc
ST1 {v28.16b, v29.16b}, [x13], x0
SUB x9, x9, x2 // a1 -= kc
ST1 {v26.16b, v27.16b}, [x14], x0
SUB x10, x10, x2 // a2 -= kc
ST1 {v24.16b, v25.16b}, [x17], x0
SUB x11, x11, x2 // a3 -= kc
ST1 {v22.16b, v23.16b}, [x16], x0
SUB x12, x12, x2 // a4 -= kc
ST1 {v20.16b, v21.16b}, [x6], x0
SUB x4, x4, x2 // a5 -= kc
$else:
ST1 {v20.16b, v21.16b}, [x6], x0
SUB x3, x3, x2 // a0 -= kc
ST1 {v22.16b, v23.16b}, [x16], x0
SUB x9, x9, x2 // a1 -= kc
ST1 {v24.16b, v25.16b}, [x17], x0
SUB x10, x10, x2 // a2 -= kc
ST1 {v26.16b, v27.16b}, [x14], x0
SUB x11, x11, x2 // a3 -= kc
ST1 {v28.16b, v29.16b}, [x13], x0
SUB x12, x12, x2 // a4 -= kc
ST1 {v30.16b, v31.16b}, [x7], x0
SUB x4, x4, x2 // a5 -= kc
B.HI 0b
$if DATATYPE == "QC4":
LDP d8, d9, [sp], 16
RET
3:
# Remainder- 1 float of A (4 bytes)
LDR s0, [x3], 4
$if DATATYPE == "F32":
LDP q16, q17, [x5], 32 // 8 F32 weights
$elif DATATYPE == "QC4":
LDR d18, [x5], 8 // 8 QC4 weights
SADDW v17.8h, v8.8h, v18.8b
SXTL v16.4s, v17.4h
SXTL2 v17.4s, v17.8h
SCVTF v16.4s, v16.4s
SCVTF v17.4s, v17.4s
$else:
LDR d18, [x5], 8 // 8 QC8 weights
SXTL v17.8h, v18.8b
SXTL v16.4s, v17.4h
SXTL2 v17.4s, v17.8h
SCVTF v16.4s, v16.4s
SCVTF v17.4s, v17.4s
LDR s1, [x9], 4
LDR s2, [x10], 4
LDR s3, [x11], 4
LDR s4, [x12], 4
LDR s5, [x4], 4
FMLA v20.4s, v16.4s, v0.s[0]
FMLA v22.4s, v16.4s, v1.s[0]
FMLA v24.4s, v16.4s, v2.s[0]
FMLA v26.4s, v16.4s, v3.s[0]
FMLA v28.4s, v16.4s, v4.s[0]
FMLA v30.4s, v16.4s, v5.s[0]
FMLA v21.4s, v17.4s, v0.s[0]
FMLA v23.4s, v17.4s, v1.s[0]
FMLA v25.4s, v17.4s, v2.s[0]
FMLA v27.4s, v17.4s, v3.s[0]
FMLA v29.4s, v17.4s, v4.s[0]
FMLA v31.4s, v17.4s, v5.s[0]
B 2b
# Store odd width
4:
TBZ x1, 2, 5f
$if INC:
STR q30, [x7], 16
MOV v30.16b, v31.16b
STR q28, [x13], 16
MOV v28.16b, v29.16b
STR q26, [x14], 16
MOV v26.16b, v27.16b
STR q24, [x17], 16
MOV v24.16b, v25.16b
STR q22, [x16], 16
MOV v22.16b, v23.16b
STR q20, [x6], 16
MOV v20.16b, v21.16b
$else:
STR q20, [x6], 16
MOV v20.16b, v21.16b
STR q22, [x16], 16
MOV v22.16b, v23.16b
STR q24, [x17], 16
MOV v24.16b, v25.16b
STR q26, [x14], 16
MOV v26.16b, v27.16b
STR q28, [x13], 16
MOV v28.16b, v29.16b
STR q30, [x7], 16
MOV v30.16b, v31.16b
5:
TBZ x1, 1, 6f
$if INC:
STR d30, [x7], 8
STR d28, [x13], 8
DUP d30, v30.d[1]
DUP d28, v28.d[1]
STR d26, [x14], 8
STR d24, [x17], 8
DUP d26, v26.d[1]
DUP d24, v24.d[1]
STR d22, [x16], 8
STR d20, [x6], 8
DUP d22, v22.d[1]
DUP d20, v20.d[1]
$else:
STR d20, [x6], 8
STR d22, [x16], 8
DUP d20, v20.d[1]
DUP d22, v22.d[1]
STR d24, [x17], 8
STR d26, [x14], 8
DUP d24, v24.d[1]
DUP d26, v26.d[1]
STR d28, [x13], 8
STR d30, [x7], 8
DUP d28, v28.d[1]
DUP d30, v30.d[1]
6:
TBZ x1, 0, 7f
$if INC:
STR s30, [x7]
STR s28, [x13]
STR s26, [x14]
STR s24, [x17]
STR s22, [x16]
STR s20, [x6]
$else:
STR s20, [x6]
STR s22, [x16]
STR s24, [x17]
STR s26, [x14]
STR s28, [x13]
STR s30, [x7]
7:
$if DATATYPE == "QC4":
LDP d8, d9, [sp], 16
RET
END_FUNCTION xnn_${DATATYPE_SPEC}_gemm${"inc" if INC else ""}_minmax_ukernel_6x8__asm_aarch64_neonfma_ld64
#ifdef __ELF__
.section ".note.GNU-stack","",%progbits
#endif
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