// Auto-generated file. Do not edit! // Template: src/f32-igemm/1x8-aarch64-neonfma-cortex-a75.S.in // Generator: tools/xngen // // 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 # void xnn_f32_igemm_minmax_ukernel_4x8__aarch64_neonfma_cortex_a75( # size_t mr, (x0) - unused. mr = 1 # 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) - unused # 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. # A pointer # x8 a0 # C pointer # x6 c0 BEGIN_FUNCTION xnn_f32_igemm_minmax_ukernel_1x8__aarch64_neonfma_cortex_a75 # Load cn_stride, a_offset LDP x10, x11, [sp] # Load zero, params pointer LDP x12, x8, [sp, 16] # Load min/max values LD2R {v30.4s, v31.4s}, [x8] 0: # Load initial bias from w into accumulators LDP q16, q17, [x5], 32 MOVI v18.4s, 0 // second set of C for pipelining FMLA MOVI v19.4s, 0 MOV x9, x3 // p = ks 1: # Load next A pointer LDR x8, [x4], 8 CMP x8, x12 // if a0 == zero ADD x8, x8, x11 // a0 += a_offset CSEL x8, x12, x8, EQ // a0 = zero, else += a0 + 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 A and B. LDP q20, q21, [x5], 32 LDP q22, q23, [x5], 32 LDP q24, q25, [x5], 32 LDP q26, q27, [x5], 32 LDR q0, [x8], 16 # Is there at least 8. yes do main loop SUBS x0, x0, 32 B.LO 3f # Main loop - 8 floats of A (32 bytes) 2: # First block of 4. FMA for first 4, loads for 2nd block of 4. FMLA v16.4s, v20.4s, v0.s[0] LDR q1, [x8], 16 FMLA v17.4s, v21.4s, v0.s[0] LDP q20, q21, [x5], 32 FMLA v18.4s, v22.4s, v0.s[1] FMLA v19.4s, v23.4s, v0.s[1] LDP q22, q23, [x5], 32 FMLA v16.4s, v24.4s, v0.s[2] FMLA v17.4s, v25.4s, v0.s[2] LDP q24, q25, [x5], 32 FMLA v18.4s, v26.4s, v0.s[3] FMLA v19.4s, v27.4s, v0.s[3] LDP q26, q27, [x5], 32 # Second block of 4. FMA for second 4, loads for 1st block of 4. FMLA v16.4s, v20.4s, v1.s[0] LDR q0, [x8], 16 FMLA v17.4s, v21.4s, v1.s[0] LDP q20, q21, [x5], 32 FMLA v18.4s, v22.4s, v1.s[1] FMLA v19.4s, v23.4s, v1.s[1] LDP q22, q23, [x5], 32 FMLA v16.4s, v24.4s, v1.s[2] FMLA v17.4s, v25.4s, v1.s[2] LDP q24, q25, [x5], 32 FMLA v18.4s, v26.4s, v1.s[3] FMLA v19.4s, v27.4s, v1.s[3] SUBS x0, x0, 32 LDP q26, q27, [x5], 32 B.HS 2b 3: # Epilogue # First block of 4. FMA for first 4, loads for 2nd block of 4. FMLA v16.4s, v20.4s, v0.s[0] LDR q1, [x8], 16 FMLA v17.4s, v21.4s, v0.s[0] LDP q20, q21, [x5], 32 FMLA v18.4s, v22.4s, v0.s[1] FMLA v19.4s, v23.4s, v0.s[1] LDP q22, q23, [x5], 32 FMLA v16.4s, v24.4s, v0.s[2] FMLA v17.4s, v25.4s, v0.s[2] LDP q24, q25, [x5], 32 FMLA v18.4s, v26.4s, v0.s[3] FMLA v19.4s, v27.4s, v0.s[3] LDP q26, q27, [x5], 32 # Second block of 4. no loads FMLA v16.4s, v20.4s, v1.s[0] FMLA v17.4s, v21.4s, v1.s[0] FMLA v18.4s, v22.4s, v1.s[1] FMLA v19.4s, v23.4s, v1.s[1] FMLA v16.4s, v24.4s, v1.s[2] FMLA v17.4s, v25.4s, v1.s[2] FMLA v18.4s, v26.4s, v1.s[3] FMLA v19.4s, v27.4s, v1.s[3] 4: # Is there a remainder?- 4 floats of A (16 bytes) TBNZ x0, 4, 6f # Is there a remainder?- 2 floats of A (8 bytes) TBNZ x0, 3, 7f # Is there a remainder?- 1 float of A (4 bytes) TBNZ x0, 2, 9f 5: # ks loop SUBS x9, x9, 8 // ks -= MR * sizeof(void*) B.HI 1b FADD v16.4s, v16.4s, v18.4s FADD v17.4s, v17.4s, v19.4s # Clamp FMAX v16.4s, v16.4s, v30.4s FMAX v17.4s, v17.4s, v30.4s FMIN v16.4s, v16.4s, v31.4s FMIN v17.4s, v17.4s, v31.4s # Store full 1 x 8 SUBS x1, x1, 8 B.LO 10f STP q16, q17, [x6] ADD x6, x6, x10 SUB x4, x4, x3 // a -= ks # nc loop B.HI 0b RET 6: # Remainder- 4 floats of A (16 bytes) LDP q20, q21, [x5], 32 LDR q0, [x8], 16 FMLA v16.4s, v20.4s, v0.s[0] FMLA v17.4s, v21.4s, v0.s[0] LDP q22, q23, [x5], 32 LDP q24, q25, [x5], 32 LDP q26, q27, [x5], 32 FMLA v18.4s, v22.4s, v0.s[1] FMLA v19.4s, v23.4s, v0.s[1] FMLA v16.4s, v24.4s, v0.s[2] FMLA v17.4s, v25.4s, v0.s[2] FMLA v18.4s, v26.4s, v0.s[3] FMLA v19.4s, v27.4s, v0.s[3] TBZ x0, 3, 8f 7: # Remainder- 2 floats of A (8 bytes) LDP q20, q21, [x5], 32 LDR d0, [x8], 8 FMLA v16.4s, v20.4s, v0.s[0] FMLA v17.4s, v21.4s, v0.s[0] LDP q22, q23, [x5], 32 FMLA v18.4s, v22.4s, v0.s[1] FMLA v19.4s, v23.4s, v0.s[1] 8: TBZ x0, 2, 5b 9: # Remainder- 1 float of A (4 bytes) LDP q20, q21, [x5], 32 LDR s0, [x8], 4 FMLA v16.4s, v20.4s, v0.s[0] FMLA v17.4s, v21.4s, v0.s[0] B 5b 10: # Store odd channels TBZ x1, 2, 11f STR q16, [x6], 16 MOV v16.16b, v17.16b 11: TBZ x1, 1, 12f STR d16, [x6], 8 DUP d16, v16.d[1] 12: TBZ x1, 0, 13f STR s16, [x6], 4 13: RET END_FUNCTION xnn_f32_igemm_minmax_ukernel_1x8__aarch64_neonfma_cortex_a75 #ifdef __ELF__ .section ".note.GNU-stack","",%progbits #endif