// 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. #include "xnnpack/assembly.h" # void xnn_f32_igemm_minmax_ukernel_4x8__asm_aarch64_neonfma_cortex_a75${"_prfm" if PREFETCH else ""}( # size_t mr, x0 # size_t nc, x1 # size_t kc, x2 / x0 # size_t ks, x3 / x9 # const float** restrict a, x4 # const float* restrict w, x5 # float* restrict c, x6 # size_t cm_stride, x7 # size_t cn_stride, [sp] -> x10 # size_t a_offset, [sp + 8] -> x11 # const float* zero, [sp + 16] -> x12 # const xnn_f32_minmax_params params [sp + 24] -> x8 # d8-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS. # Register usage # A0 x20 v0 v4 # A1 x13 v1 v5 # A2 x14 v2 v6 # A3 x15 v3 v7 # B x5 v8 v9 v10 v11 # B v12 v13 v14 v15 # B v16 v17 v18 v19 # B v20 v21 v22 v23 # C0 x6 v24 v25 # C1 x16 v26 v27 # C2 x17 v28 v29 # C3 x7 v30 v31 # Clamp v4 v5 BEGIN_FUNCTION xnn_f32_igemm_minmax_ukernel_4x8__asm_aarch64_neonfma_cortex_a75${"_prfm" if PREFETCH else ""} # Load cn_stride, a_offset LDP x10, x11, [sp] # Load zero, params pointer LDP x12, x8, [sp, 16] # Load min/max values LD2R {v4.4s, v5.4s}, [x8] # Save x20 on stack STR x20, [sp, -80]! # Save d8-d15 on stack STP d8, d9, [sp, 16] STP d10, d11, [sp, 32] STP d12, d13, [sp, 48] STP d14, d15, [sp, 64] # Clamp C pointers CMP x0, 2 // if mr < 2 ADD x16, x6, x7 // c1 = c0 + cm_stride CSEL x16, x6, x16, LO // c1 = c0 ADD x17, x16, x7 // c2 = c1 + cm_stride // if mr <= 2 CSEL x17, x16, x17, LS // c2 = c1 CMP x0, 4 // if mr < 4 ADD x7, x17, x7 // c3 = c2 + cm_stride CSEL x7, x17, x7, LO // c3 = c2 0: # Load initial bias from w into accumulators LDP q24, q25, [x5], 32 MOV v26.16b, v24.16b MOV v27.16b, v25.16b MOV v28.16b, v24.16b MOV v29.16b, v25.16b MOV v30.16b, v24.16b MOV v31.16b, v25.16b MOV x9, x3 // p = ks 1: # Load next 4 A pointers LDR x20, [x4], 8 LDR x13, [x4], 8 LDR x14, [x4], 8 LDR x15, [x4], 8 CMP x20, x12 // if a0 == zero ADD x20, x20, x11 // a0 += a_offset CSEL x20, x12, x20, EQ // a0 = zero, else += a0 + a_offset CMP x13, x12 // if a1 == zero ADD x13, x13, x11 // a1 += a_offset CSEL x13, x12, x13, EQ // a1 = zero, else += a1 + a_offset CMP x14, x12 // if a2 == zero ADD x14, x14, x11 // a2 += a_offset CSEL x14, x12, x14, EQ // a2 = zero, else += a2 + a_offset CMP x15, x12 // if a3 == zero ADD x15, x15, x11 // a3 += a_offset CSEL x15, x12, x15, EQ // a3 = zero, else += a3 + a_offset # Is there at least 8 floats (32 bytes) for prologue + epilogue? SUBS x0, x2, 32 // k = kc - 32 B.LO 4f # 16 prologue # Read first block of 4 A and B. LDR q0, [x20], 16 LDP q16, q17, [x5], 32 LDR q1, [x13], 16 LDR q2, [x14], 16 LDR q3, [x15], 16 LDP q18, q19, [x5], 32 LDP q20, q21, [x5], 32 LDP q22, q23, [x5], 32 # Is there at least 32. yes do main loop SUBS x0, x0, 32 B.LO 3f # Main loop - 8 floats of A 2: # First block of 4. FMA for first 4, loads for 2nd block of 4. FMLA v24.4s, v16.4s, v0.s[0] LDP q8, q9, [x5], 32 FMLA v25.4s, v17.4s, v0.s[0] FMLA v26.4s, v16.4s, v1.s[0] LDP q10, q11, [x5], 32 FMLA v27.4s, v17.4s, v1.s[0] FMLA v28.4s, v16.4s, v2.s[0] LDP q12, q13, [x5], 32 FMLA v29.4s, v17.4s, v2.s[0] FMLA v30.4s, v16.4s, v3.s[0] LDP q14, q15, [x5], 32 FMLA v31.4s, v17.4s, v3.s[0] FMLA v24.4s, v18.4s, v0.s[1] LDR q4, [x20], 16 FMLA v25.4s, v19.4s, v0.s[1] FMLA v26.4s, v18.4s, v1.s[1] LDR q5, [x13], 16 FMLA v27.4s, v19.4s, v1.s[1] FMLA v28.4s, v18.4s, v2.s[1] LDR q6, [x14], 16 FMLA v29.4s, v19.4s, v2.s[1] FMLA v30.4s, v18.4s, v3.s[1] LDR q7, [x15], 16 FMLA v31.4s, v19.4s, v3.s[1] FMLA v24.4s, v20.4s, v0.s[2] $if PREFETCH: PRFM PLDL1KEEP, [x5, 128] FMLA v25.4s, v21.4s, v0.s[2] FMLA v26.4s, v20.4s, v1.s[2] $if PREFETCH: PRFM PLDL1KEEP, [x5, 192] FMLA v27.4s, v21.4s, v1.s[2] FMLA v28.4s, v20.4s, v2.s[2] $if PREFETCH: PRFM PLDL1KEEP, [x5, 256] FMLA v29.4s, v21.4s, v2.s[2] FMLA v30.4s, v20.4s, v3.s[2] $if PREFETCH: PRFM PLDL1KEEP, [x5, 320] FMLA v31.4s, v21.4s, v3.s[2] FMLA v24.4s, v22.4s, v0.s[3] FMLA v25.4s, v23.4s, v0.s[3] FMLA v26.4s, v22.4s, v1.s[3] FMLA v27.4s, v23.4s, v1.s[3] FMLA v28.4s, v22.4s, v2.s[3] FMLA v29.4s, v23.4s, v2.s[3] FMLA v30.4s, v22.4s, v3.s[3] FMLA v31.4s, v23.4s, v3.s[3] # Second block of 4. FMA for second 4, loads for 1st block of 4. FMLA v24.4s, v8.4s, v4.s[0] LDP q16, q17, [x5], 32 FMLA v25.4s, v9.4s, v4.s[0] FMLA v26.4s, v8.4s, v5.s[0] LDP q18, q19, [x5], 32 FMLA v27.4s, v9.4s, v5.s[0] FMLA v28.4s, v8.4s, v6.s[0] LDP q20, q21, [x5], 32 FMLA v29.4s, v9.4s, v6.s[0] FMLA v30.4s, v8.4s, v7.s[0] LDP q22, q23, [x5], 32 FMLA v31.4s, v9.4s, v7.s[0] FMLA v24.4s, v10.4s, v4.s[1] LDR q0, [x20], 16 FMLA v25.4s, v11.4s, v4.s[1] FMLA v26.4s, v10.4s, v5.s[1] LDR q1, [x13], 16 FMLA v27.4s, v11.4s, v5.s[1] FMLA v28.4s, v10.4s, v6.s[1] LDR q2, [x14], 16 FMLA v29.4s, v11.4s, v6.s[1] FMLA v30.4s, v10.4s, v7.s[1] LDR q3, [x15], 16 FMLA v31.4s, v11.4s, v7.s[1] FMLA v24.4s, v12.4s, v4.s[2] FMLA v25.4s, v13.4s, v4.s[2] FMLA v26.4s, v12.4s, v5.s[2] FMLA v27.4s, v13.4s, v5.s[2] FMLA v28.4s, v12.4s, v6.s[2] FMLA v29.4s, v13.4s, v6.s[2] FMLA v30.4s, v12.4s, v7.s[2] FMLA v31.4s, v13.4s, v7.s[2] FMLA v24.4s, v14.4s, v4.s[3] FMLA v25.4s, v15.4s, v4.s[3] FMLA v26.4s, v14.4s, v5.s[3] FMLA v27.4s, v15.4s, v5.s[3] FMLA v28.4s, v14.4s, v6.s[3] FMLA v29.4s, v15.4s, v6.s[3] SUBS x0, x0, 32 FMLA v30.4s, v14.4s, v7.s[3] FMLA v31.4s, v15.4s, v7.s[3] B.HS 2b 3: # Epilogue # First block of 4. FMA for first 4, loads for 2nd block of 4. FMLA v24.4s, v16.4s, v0.s[0] LDP q8, q9, [x5], 32 FMLA v25.4s, v17.4s, v0.s[0] FMLA v26.4s, v16.4s, v1.s[0] LDP q10, q11, [x5], 32 FMLA v27.4s, v17.4s, v1.s[0] FMLA v28.4s, v16.4s, v2.s[0] LDP q12, q13, [x5], 32 FMLA v29.4s, v17.4s, v2.s[0] FMLA v30.4s, v16.4s, v3.s[0] LDP q14, q15, [x5], 32 FMLA v31.4s, v17.4s, v3.s[0] FMLA v24.4s, v18.4s, v0.s[1] LDR q4, [x20], 16 FMLA v25.4s, v19.4s, v0.s[1] FMLA v26.4s, v18.4s, v1.s[1] LDR q5, [x13], 16 FMLA v27.4s, v19.4s, v1.s[1] FMLA v28.4s, v18.4s, v2.s[1] LDR q6, [x14], 16 FMLA v29.4s, v19.4s, v2.s[1] FMLA v30.4s, v18.4s, v3.s[1] LDR q7, [x15], 16 FMLA v31.4s, v19.4s, v3.s[1] FMLA v24.4s, v20.4s, v0.s[2] FMLA v25.4s, v21.4s, v0.s[2] FMLA v26.4s, v20.4s, v1.s[2] FMLA v27.4s, v21.4s, v1.s[2] FMLA v28.4s, v20.4s, v2.s[2] FMLA v29.4s, v21.4s, v2.s[2] FMLA v30.4s, v20.4s, v3.s[2] FMLA v31.4s, v21.4s, v3.s[2] FMLA v24.4s, v22.4s, v0.s[3] FMLA v25.4s, v23.4s, v0.s[3] FMLA v26.4s, v22.4s, v1.s[3] FMLA v27.4s, v23.4s, v1.s[3] FMLA v28.4s, v22.4s, v2.s[3] FMLA v29.4s, v23.4s, v2.s[3] FMLA v30.4s, v22.4s, v3.s[3] FMLA v31.4s, v23.4s, v3.s[3] # Second block of 4. FMA for second 4, noloads FMLA v24.4s, v8.4s, v4.s[0] FMLA v25.4s, v9.4s, v4.s[0] FMLA v26.4s, v8.4s, v5.s[0] FMLA v27.4s, v9.4s, v5.s[0] FMLA v28.4s, v8.4s, v6.s[0] FMLA v29.4s, v9.4s, v6.s[0] FMLA v30.4s, v8.4s, v7.s[0] FMLA v31.4s, v9.4s, v7.s[0] FMLA v24.4s, v10.4s, v4.s[1] FMLA v25.4s, v11.4s, v4.s[1] FMLA v26.4s, v10.4s, v5.s[1] FMLA v27.4s, v11.4s, v5.s[1] FMLA v28.4s, v10.4s, v6.s[1] FMLA v29.4s, v11.4s, v6.s[1] FMLA v30.4s, v10.4s, v7.s[1] FMLA v31.4s, v11.4s, v7.s[1] FMLA v24.4s, v12.4s, v4.s[2] FMLA v25.4s, v13.4s, v4.s[2] FMLA v26.4s, v12.4s, v5.s[2] FMLA v27.4s, v13.4s, v5.s[2] FMLA v28.4s, v12.4s, v6.s[2] FMLA v29.4s, v13.4s, v6.s[2] FMLA v30.4s, v12.4s, v7.s[2] FMLA v31.4s, v13.4s, v7.s[2] FMLA v24.4s, v14.4s, v4.s[3] FMLA v25.4s, v15.4s, v4.s[3] FMLA v26.4s, v14.4s, v5.s[3] FMLA v27.4s, v15.4s, v5.s[3] # Load min/max values LD2R {v4.4s, v5.4s}, [x8] FMLA v28.4s, v14.4s, v6.s[3] FMLA v29.4s, v15.4s, v6.s[3] FMLA v30.4s, v14.4s, v7.s[3] FMLA v31.4s, v15.4s, v7.s[3] 4: # Remainder- 4 floats of A TBZ x0, 4, 5f LDR q0, [x20], 16 LDP q16, q17, [x5], 32 LDR q1, [x13], 16 LDR q2, [x14], 16 LDR q3, [x15], 16 FMLA v24.4s, v16.4s, v0.s[0] FMLA v25.4s, v17.4s, v0.s[0] LDP q18, q19, [x5], 32 FMLA v26.4s, v16.4s, v1.s[0] FMLA v27.4s, v17.4s, v1.s[0] LDP q20, q21, [x5], 32 FMLA v28.4s, v16.4s, v2.s[0] FMLA v29.4s, v17.4s, v2.s[0] LDP q22, q23, [x5], 32 FMLA v30.4s, v16.4s, v3.s[0] FMLA v31.4s, v17.4s, v3.s[0] FMLA v24.4s, v18.4s, v0.s[1] FMLA v25.4s, v19.4s, v0.s[1] FMLA v26.4s, v18.4s, v1.s[1] FMLA v27.4s, v19.4s, v1.s[1] FMLA v28.4s, v18.4s, v2.s[1] FMLA v29.4s, v19.4s, v2.s[1] FMLA v30.4s, v18.4s, v3.s[1] FMLA v31.4s, v19.4s, v3.s[1] FMLA v24.4s, v20.4s, v0.s[2] FMLA v25.4s, v21.4s, v0.s[2] FMLA v26.4s, v20.4s, v1.s[2] FMLA v27.4s, v21.4s, v1.s[2] FMLA v28.4s, v20.4s, v2.s[2] FMLA v29.4s, v21.4s, v2.s[2] FMLA v30.4s, v20.4s, v3.s[2] FMLA v31.4s, v21.4s, v3.s[2] FMLA v24.4s, v22.4s, v0.s[3] FMLA v25.4s, v23.4s, v0.s[3] FMLA v26.4s, v22.4s, v1.s[3] FMLA v27.4s, v23.4s, v1.s[3] FMLA v28.4s, v22.4s, v2.s[3] FMLA v29.4s, v23.4s, v2.s[3] FMLA v30.4s, v22.4s, v3.s[3] FMLA v31.4s, v23.4s, v3.s[3] 5: # Remainder- 2 floats of A TBZ x0, 3, 6f LDR d0, [x20], 8 LDP q16, q17, [x5], 32 LDR d1, [x13], 8 LDR d2, [x14], 8 LDR d3, [x15], 8 FMLA v24.4s, v16.4s, v0.s[0] FMLA v25.4s, v17.4s, v0.s[0] LDP q18, q19, [x5], 32 FMLA v26.4s, v16.4s, v1.s[0] FMLA v27.4s, v17.4s, v1.s[0] FMLA v28.4s, v16.4s, v2.s[0] FMLA v29.4s, v17.4s, v2.s[0] FMLA v30.4s, v16.4s, v3.s[0] FMLA v31.4s, v17.4s, v3.s[0] FMLA v24.4s, v18.4s, v0.s[1] FMLA v25.4s, v19.4s, v0.s[1] FMLA v26.4s, v18.4s, v1.s[1] FMLA v27.4s, v19.4s, v1.s[1] FMLA v28.4s, v18.4s, v2.s[1] FMLA v29.4s, v19.4s, v2.s[1] FMLA v30.4s, v18.4s, v3.s[1] FMLA v31.4s, v19.4s, v3.s[1] 6: # Remainder- 1 float of A TBZ x0, 2, 7f LDR s0, [x20], 4 LDP q16, q17, [x5], 32 LDR s1, [x13], 4 LDR s2, [x14], 4 LDR s3, [x15], 4 FMLA v24.4s, v16.4s, v0.s[0] FMLA v25.4s, v17.4s, v0.s[0] FMLA v26.4s, v16.4s, v1.s[0] FMLA v27.4s, v17.4s, v1.s[0] FMLA v28.4s, v16.4s, v2.s[0] FMLA v29.4s, v17.4s, v2.s[0] FMLA v30.4s, v16.4s, v3.s[0] FMLA v31.4s, v17.4s, v3.s[0] 7: # ks loop SUBS x9, x9, 32 // ks -= MR * sizeof(void*) B.HI 1b # Clamp FMAX v24.4s, v24.4s, v4.4s FMAX v25.4s, v25.4s, v4.4s FMAX v26.4s, v26.4s, v4.4s FMAX v27.4s, v27.4s, v4.4s FMAX v28.4s, v28.4s, v4.4s FMAX v29.4s, v29.4s, v4.4s FMAX v30.4s, v30.4s, v4.4s FMAX v31.4s, v31.4s, v4.4s FMIN v24.4s, v24.4s, v5.4s FMIN v25.4s, v25.4s, v5.4s FMIN v26.4s, v26.4s, v5.4s FMIN v27.4s, v27.4s, v5.4s FMIN v28.4s, v28.4s, v5.4s FMIN v29.4s, v29.4s, v5.4s FMIN v30.4s, v30.4s, v5.4s FMIN v31.4s, v31.4s, v5.4s # Store full 4 x 8 SUBS x1, x1, 8 B.LO 8f STP q30, q31, [x7] ADD x7, x7, x10 STP q28, q29, [x17] ADD x17, x17, x10 STP q26, q27, [x16] ADD x16, x16, x10 STP q24, q25, [x6] ADD x6, x6, x10 SUB x4, x4, x3 // a -= ks # nc loop B.HI 0b # Restore d8-d15 from stack LDP d14, d15, [sp, 64] LDP d12, d13, [sp, 48] LDP d10, d11, [sp, 32] LDP d8, d9, [sp, 16] # Restore x20 from stack LDR x20, [sp], 80 RET # Store odd width 8: TBZ x1, 2, 9f STR q30, [x7], 16 MOV v30.16b, v31.16b STR q28, [x17], 16 MOV v28.16b, v29.16b STR q26, [x16], 16 MOV v26.16b, v27.16b STR q24, [x6], 16 MOV v24.16b, v25.16b 9: TBZ x1, 1, 10f STR d30, [x7], 8 STR d28, [x17], 8 DUP d30, v30.d[1] DUP d28, v28.d[1] STR d26, [x16], 8 STR d24, [x6], 8 DUP d26, v26.d[1] DUP d24, v24.d[1] 10: TBZ x1, 0, 11f STR s30, [x7] STR s28, [x17] STR s26, [x16] STR s24, [x6] 11: # Restore d8-d15 from stack LDP d14, d15, [sp, 64] LDP d12, d13, [sp, 48] LDP d10, d11, [sp, 32] LDP d8, d9, [sp, 16] # Restore x20 from stack LDR x20, [sp], 80 RET END_FUNCTION xnn_f32_igemm_minmax_ukernel_4x8__asm_aarch64_neonfma_cortex_a75${"_prfm" if PREFETCH else ""} #ifdef __ELF__ .section ".note.GNU-stack","",%progbits #endif