// Copyright 2021 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 REQUANTIZATION in ["FP32", "RNDNU"] $assert DATATYPE in ["QC8", "QS8"] $assert DATATYPE != "QC8" or REQUANTIZATION == "FP32" #include "xnnpack/assembly.h" $DATATYPE_SPEC = {"QC8": "qs8_qc8w", "QS8": "qs8"}[DATATYPE] $PARAMS_UNION = {"QC8": "xnn_qs8_qc8w_conv_minmax_params", "QS8": "xnn_qs8_conv_minmax_params"}[DATATYPE] $REWIND_DECREMENT = 3 if DATATYPE == "QC8" else {"RNDNU": 15, "FP32": 7}[REQUANTIZATION] # void xnn_${DATATYPE_SPEC}_igemm_minmax_${REQUANTIZATION.lower()}_ukernel_4x16c4__asm_aarch64_neondot_ld64( # size_t mr, x0 # size_t nc, x1 # size_t kc, x2 / x0 # size_t ks, x3 / x9 # const int8_t** restrict a, x4 # const int8_t* restrict w, x5 # int8_t* restrict c, x6 # size_t cm_stride, x7 # size_t cn_stride, [sp] -> (x0) # size_t a_offset, [sp + 8] -> x8 # const int8_t* zero, [sp + 16] -> x12 # const union ${PARAMS_UNION} params [sp + 24] -> x11 # d8-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS. // Register usage // A0 x13 v0 // A1 x14 v1 // A2 x15 v2 // A3 x10 v3 // B x5 v4 v5 v6 v7 // C0 x6 v16 v20 v24 v28 // C1 x16 v17 v21 v25 v29 // C2 x17 v18 v22 v26 v30 // C3 x7 v19 v23 v27 v31 // unused v8 v9 v10 v11 v12 v13 v14 v15 BEGIN_FUNCTION xnn_${DATATYPE_SPEC}_igemm_minmax_${REQUANTIZATION.lower()}_ukernel_4x16c4__asm_aarch64_neondot_ld64 # Clamp C pointers CMP x0, 2 // if mr < 2 LDR x8, [sp, 8] // Load a_offset ADD x16, x6, x7 // c1 = c0 + cm_stride CSEL x16, x6, x16, LO // c1 = c0 ADD x2, x2, 3 // kc = (kc + 3) & ~3 ADD x17, x16, x7 // c2 = c1 + cm_stride LDP x12, x11, [sp, 16] // Load zero, params pointer // if mr <= 2 CSEL x17, x16, x17, LS // c2 = c1 BIC x2, x2, 3 CMP x0, 4 // if mr < 4 ADD x7, x17, x7 // c3 = c2 + cm_stride CSEL x7, x17, x7, LO // c3 = c2 .p2align 3 0: # Load initial bias from w into accumulators LDP q16, q20, [x5], 32 MOV v17.16b, v16.16b MOV v18.16b, v16.16b LDP q24, q28, [x5], 32 MOV v19.16b, v16.16b MOV v21.16b, v20.16b MOV v22.16b, v20.16b MOV v23.16b, v20.16b MOV v25.16b, v24.16b MOV v26.16b, v24.16b MOV v27.16b, v24.16b MOV v29.16b, v28.16b MOV v30.16b, v28.16b MOV v31.16b, v28.16b MOV x9, x3 // p = ks .p2align 3 1: # Load next 4 A pointers LDP x13, x14, [x4], 16 LDP x15, x10, [x4], 16 CMP x13, x12 // if a0 == zero ADD x13, x13, x8 // a0 += a_offset CSEL x13, x12, x13, EQ // a0 = zero, else += a0 + a_offset CMP x14, x12 // if a1 == zero ADD x14, x14, x8 // a1 += a_offset CSEL x14, x12, x14, EQ // a1 = zero, else += a1 + a_offset CMP x15, x12 // if a2 == zero ADD x15, x15, x8 // a2 += a_offset CSEL x15, x12, x15, EQ // a2 = zero, else += a2 + a_offset CMP x10, x12 // if a3 == zero ADD x10, x10, x8 // a3 += a_offset CSEL x10, x12, x10, EQ // a3 = zero, else += a3 + a_offset # Is there at least 8 bytes for main loop? SUBS x0, x2, 8 // k = kc - 8 B.LO 4f # Main loop - 8 bytes of A .p2align 3 2: LDR d0, [x13], 8 LDR q4, [x5], 16 LDR d1, [x14], 8 LDR d2, [x15], 8 LDR d3, [x10], 8 LDR q5, [x5], 16 SDOT v16.4s, v4.16b, v0.4b[0] SDOT v17.4s, v4.16b, v1.4b[0] LDP q6, q7, [x5], 32 SDOT v18.4s, v4.16b, v2.4b[0] SDOT v19.4s, v4.16b, v3.4b[0] SDOT v20.4s, v5.16b, v0.4b[0] SDOT v21.4s, v5.16b, v1.4b[0] SDOT v22.4s, v5.16b, v2.4b[0] SDOT v23.4s, v5.16b, v3.4b[0] SDOT v24.4s, v6.16b, v0.4b[0] SDOT v25.4s, v6.16b, v1.4b[0] LDP q4, q5, [x5], 32 SDOT v26.4s, v6.16b, v2.4b[0] SDOT v27.4s, v6.16b, v3.4b[0] SDOT v28.4s, v7.16b, v0.4b[0] SDOT v29.4s, v7.16b, v1.4b[0] SDOT v30.4s, v7.16b, v2.4b[0] SDOT v31.4s, v7.16b, v3.4b[0] SDOT v16.4s, v4.16b, v0.4b[1] SDOT v17.4s, v4.16b, v1.4b[1] LDP q6, q7, [x5], 32 SDOT v18.4s, v4.16b, v2.4b[1] SDOT v19.4s, v4.16b, v3.4b[1] SDOT v20.4s, v5.16b, v0.4b[1] SDOT v21.4s, v5.16b, v1.4b[1] SDOT v22.4s, v5.16b, v2.4b[1] SDOT v23.4s, v5.16b, v3.4b[1] SDOT v24.4s, v6.16b, v0.4b[1] SDOT v25.4s, v6.16b, v1.4b[1] SDOT v26.4s, v6.16b, v2.4b[1] SDOT v27.4s, v6.16b, v3.4b[1] SDOT v28.4s, v7.16b, v0.4b[1] SDOT v29.4s, v7.16b, v1.4b[1] SDOT v30.4s, v7.16b, v2.4b[1] SUBS x0, x0, 8 SDOT v31.4s, v7.16b, v3.4b[1] B.HS 2b # Is there a remainder?- 4 bytes of A TBNZ x0, 2, 4f # ks loop SUBS x9, x9, 32 // ks -= MR * sizeof(int8_t*) B.HI 1b 3: $if REQUANTIZATION == "RNDNU": # Apply params - preshift, scale, postshift, bias and clamp LD1R {v4.4s}, [x11], 4 SQSHL v16.4s, v16.4s, v4.4s // shift to upper bits SQSHL v17.4s, v17.4s, v4.4s SQSHL v18.4s, v18.4s, v4.4s SQSHL v19.4s, v19.4s, v4.4s SQSHL v20.4s, v20.4s, v4.4s SQSHL v21.4s, v21.4s, v4.4s SQSHL v22.4s, v22.4s, v4.4s SQSHL v23.4s, v23.4s, v4.4s LD1R {v5.4s}, [x11], 4 SQSHL v24.4s, v24.4s, v4.4s SQSHL v25.4s, v25.4s, v4.4s SQSHL v26.4s, v26.4s, v4.4s SQSHL v27.4s, v27.4s, v4.4s SQSHL v28.4s, v28.4s, v4.4s SQSHL v29.4s, v29.4s, v4.4s SQSHL v30.4s, v30.4s, v4.4s SQSHL v31.4s, v31.4s, v4.4s LD1R {v6.4s}, [x11], 4 SQDMULH v16.4s, v16.4s, v5.4s // scale without rounding SQDMULH v17.4s, v17.4s, v5.4s SQDMULH v18.4s, v18.4s, v5.4s SQDMULH v19.4s, v19.4s, v5.4s SQDMULH v20.4s, v20.4s, v5.4s SQDMULH v21.4s, v21.4s, v5.4s SQDMULH v22.4s, v22.4s, v5.4s SQDMULH v23.4s, v23.4s, v5.4s SQDMULH v24.4s, v24.4s, v5.4s SQDMULH v25.4s, v25.4s, v5.4s SQDMULH v26.4s, v26.4s, v5.4s SQDMULH v27.4s, v27.4s, v5.4s SQDMULH v28.4s, v28.4s, v5.4s SQDMULH v29.4s, v29.4s, v5.4s SQDMULH v30.4s, v30.4s, v5.4s SQDMULH v31.4s, v31.4s, v5.4s SRSHL v16.4s, v16.4s, v6.4s // signed rounding shift left SRSHL v17.4s, v17.4s, v6.4s SRSHL v18.4s, v18.4s, v6.4s SRSHL v19.4s, v19.4s, v6.4s SRSHL v20.4s, v20.4s, v6.4s SRSHL v21.4s, v21.4s, v6.4s SRSHL v22.4s, v22.4s, v6.4s SRSHL v23.4s, v23.4s, v6.4s SRSHL v24.4s, v24.4s, v6.4s SRSHL v25.4s, v25.4s, v6.4s SRSHL v26.4s, v26.4s, v6.4s SRSHL v27.4s, v27.4s, v6.4s SRSHL v28.4s, v28.4s, v6.4s SRSHL v29.4s, v29.4s, v6.4s SRSHL v30.4s, v30.4s, v6.4s SRSHL v31.4s, v31.4s, v6.4s $elif REQUANTIZATION == "FP32": SCVTF v16.4s, v16.4s SCVTF v17.4s, v17.4s $if DATATYPE != "QC8": # Apply params - scale, bias and clamp LD1R {v4.4s}, [x11], 4 SCVTF v18.4s, v18.4s SCVTF v19.4s, v19.4s $else: # Load per channel scale values from weights LDR q4, [x5], 16 SCVTF v18.4s, v18.4s SCVTF v19.4s, v19.4s LDR q5, [x5], 16 SCVTF v20.4s, v20.4s SCVTF v21.4s, v21.4s SCVTF v22.4s, v22.4s SCVTF v23.4s, v23.4s SCVTF v24.4s, v24.4s SCVTF v25.4s, v25.4s SCVTF v26.4s, v26.4s SCVTF v27.4s, v27.4s SCVTF v28.4s, v28.4s SCVTF v29.4s, v29.4s SCVTF v30.4s, v30.4s SCVTF v31.4s, v31.4s $if DATATYPE == "QC8": LDR q6, [x5], 16 FMUL v16.4s, v16.4s, v4.4s FMUL v17.4s, v17.4s, v4.4s FMUL v18.4s, v18.4s, v4.4s FMUL v19.4s, v19.4s, v4.4s FMUL v20.4s, v20.4s, v5.4s LDR q4, [x5], 16 FMUL v21.4s, v21.4s, v5.4s FMUL v22.4s, v22.4s, v5.4s FMUL v23.4s, v23.4s, v5.4s FMUL v24.4s, v24.4s, v6.4s FMUL v25.4s, v25.4s, v6.4s FMUL v26.4s, v26.4s, v6.4s FMUL v27.4s, v27.4s, v6.4s FMUL v28.4s, v28.4s, v4.4s FMUL v29.4s, v29.4s, v4.4s FMUL v30.4s, v30.4s, v4.4s FMUL v31.4s, v31.4s, v4.4s $else: FMUL v16.4s, v16.4s, v4.4s FMUL v17.4s, v17.4s, v4.4s FMUL v18.4s, v18.4s, v4.4s FMUL v19.4s, v19.4s, v4.4s FMUL v20.4s, v20.4s, v4.4s FMUL v21.4s, v21.4s, v4.4s FMUL v22.4s, v22.4s, v4.4s FMUL v23.4s, v23.4s, v4.4s FMUL v24.4s, v24.4s, v4.4s FMUL v25.4s, v25.4s, v4.4s FMUL v26.4s, v26.4s, v4.4s FMUL v27.4s, v27.4s, v4.4s FMUL v28.4s, v28.4s, v4.4s FMUL v29.4s, v29.4s, v4.4s FMUL v30.4s, v30.4s, v4.4s FMUL v31.4s, v31.4s, v4.4s FCVTNS v16.4s, v16.4s FCVTNS v17.4s, v17.4s FCVTNS v18.4s, v18.4s FCVTNS v19.4s, v19.4s FCVTNS v20.4s, v20.4s FCVTNS v21.4s, v21.4s FCVTNS v22.4s, v22.4s FCVTNS v23.4s, v23.4s FCVTNS v24.4s, v24.4s FCVTNS v25.4s, v25.4s FCVTNS v26.4s, v26.4s FCVTNS v27.4s, v27.4s FCVTNS v28.4s, v28.4s FCVTNS v29.4s, v29.4s FCVTNS v30.4s, v30.4s FCVTNS v31.4s, v31.4s SQXTN v16.4h, v16.4s SQXTN v17.4h, v17.4s SQXTN v18.4h, v18.4s SQXTN v19.4h, v19.4s SQXTN v24.4h, v24.4s SQXTN v25.4h, v25.4s SQXTN v26.4h, v26.4s SQXTN v27.4h, v27.4s LD1R {v6.8h}, [x11], 2 // add bias SQXTN2 v16.8h, v20.4s SQXTN2 v17.8h, v21.4s SQXTN2 v18.8h, v22.4s SQXTN2 v19.8h, v23.4s SQXTN2 v24.8h, v28.4s SQXTN2 v25.8h, v29.4s SQXTN2 v26.8h, v30.4s SQXTN2 v27.8h, v31.4s SQADD v16.8h, v16.8h, v6.8h SQADD v17.8h, v17.8h, v6.8h SQADD v18.8h, v18.8h, v6.8h SQADD v19.8h, v19.8h, v6.8h SQADD v24.8h, v24.8h, v6.8h SQADD v25.8h, v25.8h, v6.8h SQADD v26.8h, v26.8h, v6.8h SQADD v27.8h, v27.8h, v6.8h LD1R {v4.16b}, [x11], 1 // clamp min value SQXTN v0.8b, v16.8h SQXTN v1.8b, v17.8h SQXTN v2.8b, v18.8h SQXTN v3.8b, v19.8h LD1R {v5.16b}, [x11] // clamp max value SQXTN2 v0.16b, v24.8h SQXTN2 v1.16b, v25.8h SQXTN2 v2.16b, v26.8h SQXTN2 v3.16b, v27.8h LDR x0, [sp] // cn_stride SMAX v0.16b, v0.16b, v4.16b SMAX v1.16b, v1.16b, v4.16b SUB x11, x11, ${REWIND_DECREMENT} // rewind params pointer SMAX v2.16b, v2.16b, v4.16b SMAX v3.16b, v3.16b, v4.16b SUBS x1, x1, 16 SMIN v0.16b, v0.16b, v5.16b SMIN v1.16b, v1.16b, v5.16b SMIN v2.16b, v2.16b, v5.16b SMIN v3.16b, v3.16b, v5.16b B.LO 5f # Store full 4 x 16 ST1 {v3.16b}, [x7], x0 ST1 {v2.16b}, [x17], x0 ST1 {v1.16b}, [x16], x0 ST1 {v0.16b}, [x6], x0 SUB x4, x4, x3 // a -= ks # nc loop B.HI 0b RET # Remainder- 4 bytes of A .p2align 3 4: LDR s0, [x13], 4 LDR q4, [x5], 16 LDR s1, [x14], 4 LDR s2, [x15], 4 LDR s3, [x10], 4 LDR q5, [x5], 16 SDOT v16.4s, v4.16b, v0.4b[0] SDOT v17.4s, v4.16b, v1.4b[0] LDP q6, q7, [x5], 32 SDOT v18.4s, v4.16b, v2.4b[0] SDOT v19.4s, v4.16b, v3.4b[0] SDOT v20.4s, v5.16b, v0.4b[0] SDOT v21.4s, v5.16b, v1.4b[0] SDOT v22.4s, v5.16b, v2.4b[0] SDOT v23.4s, v5.16b, v3.4b[0] SDOT v24.4s, v6.16b, v0.4b[0] SDOT v25.4s, v6.16b, v1.4b[0] SDOT v26.4s, v6.16b, v2.4b[0] SDOT v27.4s, v6.16b, v3.4b[0] SDOT v28.4s, v7.16b, v0.4b[0] SDOT v29.4s, v7.16b, v1.4b[0] SDOT v30.4s, v7.16b, v2.4b[0] SDOT v31.4s, v7.16b, v3.4b[0] # ks loop SUBS x9, x9, 32 // ks -= MR * sizeof(int8_t*) B.HI 1b B 3b # Store odd width .p2align 3 5: TBZ x1, 3, 6f STR d3, [x7], 8 STR d2, [x17], 8 DUP d3, v3.d[1] DUP d2, v2.d[1] STR d1, [x16], 8 STR d0, [x6], 8 DUP d1, v1.d[1] DUP d0, v0.d[1] 6: TBZ x1, 2, 7f STR s3, [x7], 4 STR s2, [x17], 4 DUP s3, v3.s[1] DUP s2, v2.s[1] STR s1, [x16], 4 STR s0, [x6], 4 DUP s1, v1.s[1] DUP s0, v0.s[1] 7: TBZ x1, 1, 8f STR h3, [x7], 2 STR h2, [x17], 2 DUP h3, v3.h[1] DUP h2, v2.h[1] STR h1, [x16], 2 STR h0, [x6], 2 DUP h1, v1.h[1] DUP h0, v0.h[1] 8: TBZ x1, 0, 9f STR b3, [x7] STR b2, [x17] STR b1, [x16] STR b0, [x6] 9: RET END_FUNCTION xnn_${DATATYPE_SPEC}_igemm_minmax_${REQUANTIZATION.lower()}_ukernel_4x16c4__asm_aarch64_neondot_ld64 #ifdef __ELF__ .section ".note.GNU-stack","",%progbits #endif