| // Auto-generated file. Do not edit! |
| // Template: src/qs8-igemm/1x8c8-aarch64-neon-mlal-padal.S.in |
| // Generator: tools/xngen |
| // |
| // 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. |
| |
| #include <xnnpack/assembly.h> |
| |
| # void xnn_qs8_igemm_minmax_gemmlowp_ukernel_1x8c8__aarch64_neon_mlal_padal_prfm( |
| # 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] -> x10 |
| # size_t a_offset, [sp + 8] -> x11 |
| # const float* zero, [sp + 16] -> x12 |
| # const xnn_qs8_conv_minmax_params params [sp + 24] -> x8 |
| |
| # d2-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS. |
| |
| # Register usage |
| # A0 x13 v0 v6 |
| # B x5 v4 v5 v2 v3 |
| # C0 x6 v16 v18 v20 v22 v24 v26 v28 v30 |
| # temp0 v17 v19 v21 v23 |
| |
| |
| BEGIN_FUNCTION xnn_qs8_igemm_minmax_gemmlowp_ukernel_1x8c8__aarch64_neon_mlal_padal_prfm |
| |
| # Clamp C pointers |
| LDP x10, x11, [sp] // Load cn_stride, a_offset |
| ADD x2, x2, 7 // kc = (kc + 7) & ~7 |
| LDP x12, x8, [sp, 16] // Load zero, params pointer |
| BIC x2, x2, 7 |
| |
| .p2align 3 |
| 0: |
| # Load initial bias from w into accumulators |
| LDP s16, s18, [x5], 8 |
| LDP s20, s22, [x5], 8 |
| LDP s24, s26, [x5], 8 |
| LDP s28, s30, [x5], 8 |
| MOV x9, x3 // p = ks |
| |
| .p2align 3 |
| 1: |
| # Load next A pointer |
| LDR x13, [x4], 8 |
| CMP x13, x12 // if a0 == zero |
| ADD x13, x13, x11 // a0 += a_offset |
| CSEL x13, x12, x13, EQ // a0 = zero, else += a0 + a_offset |
| |
| # Is there at least 16 bytes for epilogue? |
| SUBS x0, x2, 16 // k = kc - 16 |
| B.LO 5f |
| |
| # Prologue: load A0 and 4 B's |
| LDP d0, d6, [x13], 16 // Read A0 |
| LDP d4, d5, [x5] // Read B |
| LDP d2, d3, [x5, 64] // Read B |
| |
| # Is there at least 16 bytes for main loop? |
| SUBS x0, x0, 16 // k = k - 16 |
| B.LO 3f |
| |
| # Main loop - 16 bytes of A |
| # 4 groups of 2 mul/mla/adap = 6 cycles. |
| # 2 load for A0, A1 = +4 cycle. Total 36 cycles. |
| |
| .p2align 3 |
| 2: |
| # BLOCK 0 - 4 cycles |
| SMULL v17.8h, v4.8b, v0.8b |
| SMULL v19.8h, v5.8b, v0.8b |
| LDP d4, d5, [x5, 16] |
| SMLAL v17.8h, v2.8b, v6.8b |
| SMLAL v19.8h, v3.8b, v6.8b |
| LDP d2, d3, [x5, 80] |
| |
| # BLOCK 1 - 6 cycles |
| SMULL v21.8h, v4.8b, v0.8b |
| SMULL v23.8h, v5.8b, v0.8b |
| PRFM PLDL1KEEP, [x5, 448] |
| SADALP v16.4s, v17.8h |
| PRFM PLDL1KEEP, [x5, 512] |
| SADALP v18.4s, v19.8h |
| LDP d4, d5, [x5, 32] |
| SMLAL v21.8h, v2.8b, v6.8b |
| SMLAL v23.8h, v3.8b, v6.8b |
| LDP d2, d3, [x5, 96] |
| |
| # BLOCK 2 - 6 cycles |
| SMULL v17.8h, v4.8b, v0.8b |
| SMULL v19.8h, v5.8b, v0.8b |
| PRFM PLDL1KEEP, [x13, 128] |
| SADALP v20.4s, v21.8h |
| SADALP v22.4s, v23.8h |
| LDP d4, d5, [x5, 48] |
| SMLAL v17.8h, v2.8b, v6.8b |
| SMLAL v19.8h, v3.8b, v6.8b |
| LDP d2, d3, [x5, 112] |
| |
| # BLOCK 3 - 14 cycles |
| SMULL v21.8h, v4.8b, v0.8b |
| ADD x5, x5, 128 |
| SMULL v23.8h, v5.8b, v0.8b |
| SADALP v24.4s, v17.8h |
| SUBS x0, x0, 16 |
| SADALP v26.4s, v19.8h |
| LDP d4, d5, [x5] // Read B |
| SMLAL v21.8h, v2.8b, v6.8b |
| SMLAL v23.8h, v3.8b, v6.8b |
| LDP d0, d6, [x13], 16 // Read A0 |
| SADALP v28.4s, v21.8h |
| LDP d2, d3, [x5, 64] // Read B |
| SADALP v30.4s, v23.8h |
| B.HS 2b |
| |
| # Epilogue |
| # Same as main loop except no loads at end of loop |
| |
| .p2align 3 |
| 3: |
| # BLOCK 0 - 4 cycles |
| SMULL v17.8h, v4.8b, v0.8b |
| SMULL v19.8h, v5.8b, v0.8b |
| LDP d4, d5, [x5, 16] |
| SMLAL v17.8h, v2.8b, v6.8b |
| SMLAL v19.8h, v3.8b, v6.8b |
| LDP d2, d3, [x5, 80] |
| |
| # BLOCK 1 - 6 cycles |
| SMULL v21.8h, v4.8b, v0.8b |
| SMULL v23.8h, v5.8b, v0.8b |
| PRFM PLDL1KEEP, [x5, 448] |
| SADALP v16.4s, v17.8h |
| PRFM PLDL1KEEP, [x5, 512] |
| SADALP v18.4s, v19.8h |
| LDP d4, d5, [x5, 32] |
| SMLAL v21.8h, v2.8b, v6.8b |
| SMLAL v23.8h, v3.8b, v6.8b |
| LDP d2, d3, [x5, 96] |
| |
| # BLOCK 2 - 6 cycles |
| SMULL v17.8h, v4.8b, v0.8b |
| SMULL v19.8h, v5.8b, v0.8b |
| PRFM PLDL1KEEP, [x13, 128] |
| SADALP v20.4s, v21.8h |
| SADALP v22.4s, v23.8h |
| LDP d4, d5, [x5, 48] |
| SMLAL v17.8h, v2.8b, v6.8b |
| SMLAL v19.8h, v3.8b, v6.8b |
| LDP d2, d3, [x5, 112] |
| |
| # BLOCK 3 - 8 cycles |
| SMULL v21.8h, v4.8b, v0.8b |
| ADD x5, x5, 128 |
| SMULL v23.8h, v5.8b, v0.8b |
| SADALP v24.4s, v17.8h |
| SUBS x0, x0, 16 |
| SADALP v26.4s, v19.8h |
| SMLAL v21.8h, v2.8b, v6.8b |
| SMLAL v23.8h, v3.8b, v6.8b |
| SADALP v28.4s, v21.8h |
| SADALP v30.4s, v23.8h |
| |
| # Is there a remainder?- 8 bytes of A |
| TBNZ x0, 3, 5f |
| |
| # ks loop |
| SUBS x9, x9, 8 // ks -= MR * sizeof(int8_t*) |
| B.HI 1b |
| |
| 4: |
| # Add columns |
| ADDP v16.4s, v16.4s, v18.4s |
| ADDP v20.4s, v20.4s, v22.4s |
| LD1R {v4.4s}, [x8], 4 |
| ADDP v24.4s, v24.4s, v26.4s |
| ADDP v28.4s, v28.4s, v30.4s |
| LD1R {v7.4s}, [x8], 4 |
| ADDP v0.4s, v16.4s, v20.4s |
| ADDP v1.4s, v24.4s, v28.4s |
| |
| # Apply params - scale, shift, bias and clamp |
| SQRDMULH v0.4s, v0.4s, v4.4s |
| SQRDMULH v1.4s, v1.4s, v4.4s |
| CMEQ v4.4s, v7.4s, 0 |
| LD1R {v5.8h}, [x8], 2 |
| BIC v6.16b, v0.16b, v4.16b |
| BIC v16.16b, v1.16b, v4.16b |
| SSRA v0.4s, v6.4s, 31 |
| SSRA v1.4s, v16.4s, 31 |
| SRSHL v0.4s, v0.4s, v7.4s |
| SRSHL v1.4s, v1.4s, v7.4s |
| SQXTN v0.4h, v0.4s |
| SQXTN2 v0.8h, v1.4s |
| SUBS x1, x1, 8 |
| SQADD v0.8h, v0.8h, v5.8h |
| SQXTN v0.8b, v0.8h |
| LD1R {v1.16b}, [x8], 1 |
| LD1R {v17.16b}, [x8] |
| SMAX v0.8b, v0.8b, v1.8b |
| SUB x8, x8, 11 // rewind params pointer |
| SMIN v0.8b, v0.8b, v17.8b |
| B.LO 6f |
| |
| # Store full 1 x 8 |
| ST1 {v0.8b}, [x6], x10 |
| SUB x4, x4, x3 // a -= ks |
| B.HI 0b |
| RET |
| |
| # Remainder - 8 bytes of A |
| .p2align 3 |
| 5: |
| LDR d0, [x13], 8 |
| LDP d4, d5, [x5] |
| LDP d6, d7, [x5, 16] |
| SMULL v17.8h, v4.8b, v0.8b |
| SMULL v19.8h, v5.8b, v0.8b |
| SMULL v21.8h, v6.8b, v0.8b |
| SMULL v23.8h, v7.8b, v0.8b |
| LDP d4, d5, [x5, 32] |
| LDP d6, d7, [x5, 48] |
| SADALP v16.4s, v17.8h |
| SADALP v18.4s, v19.8h |
| SADALP v20.4s, v21.8h |
| SADALP v22.4s, v23.8h |
| SMULL v17.8h, v4.8b, v0.8b |
| SMULL v19.8h, v5.8b, v0.8b |
| SMULL v21.8h, v6.8b, v0.8b |
| SMULL v23.8h, v7.8b, v0.8b |
| ADD x5, x5, 64 |
| SADALP v24.4s, v17.8h |
| SADALP v26.4s, v19.8h |
| SADALP v28.4s, v21.8h |
| SADALP v30.4s, v23.8h |
| |
| # ks loop |
| SUBS x9, x9, 8 // ks -= MR * sizeof(int8_t*) |
| B.HI 1b |
| B 4b |
| |
| # Store odd width |
| .p2align 3 |
| 6: |
| TBZ x1, 2, 7f |
| STR s0, [x6], 4 |
| EXT v0.16b, v0.16b, v0.16b, 4 |
| |
| 7: |
| TBZ x1, 1, 8f |
| ST1 {v0.h}[0], [x6], 2 |
| EXT v0.16b, v0.16b, v0.16b, 2 |
| 8: |
| TBZ x1, 0, 9f |
| ST1 {v0.b}[0], [x6] |
| 9: |
| RET |
| |
| END_FUNCTION xnn_qs8_igemm_minmax_gemmlowp_ukernel_1x8c8__aarch64_neon_mlal_padal_prfm |
| |
| #ifdef __ELF__ |
| .section ".note.GNU-stack","",%progbits |
| #endif |