// 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 # void xnn_f32_igemm_minmax_ukernel_4x8__aarch64_neonfma_ld128( # 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. # A pointers # x8 a0 # x13 a1 # x14 a2 # x15 a3 # C pointers # x6 c0 # x16 c1 # x17 c2 # x7 c3 / cm_stride # Vector register usage # A0 v0 # A1 v1 # A2 v2 # A3 v3 # B v20 v21 v22 v23 # C v24 v25 # C v26 v27 # C v28 v29 # C v30 v31 # Clamp v4 v5 BEGIN_FUNCTION xnn_f32_igemm_minmax_ukernel_4x8__aarch64_neonfma_ld128 # Load cn_stride, a_offset LDP x10, x11, [sp] # Load zero, params pointer LDP x12, x8, [sp, 16] # Clamp C pointers CMP x0, 2 // if mr < 2 ADD x16, x6, x7 // c1 = c0 + cm_stride CSEL x16, x6, x16, LO // c1 = c0 # Load min/max values LD2R {v4.4s, v5.4s}, [x8] 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 LDP x8, x13, [x4], 16 LDP x14, x15, [x4], 16 CMP x8, x12 // if a0 == zero ADD x8, x8, x11 // a0 += a_offset CSEL x8, x12, x8, 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 4 floats (16 bytes)? SUBS x0, x2, 16 // k = kc - 16 B.LO 4f # Main loop - 4 floats of A (16 bytes) 2: LDR q0, [x8], 16 LDP q20, q21, [x5], 32 LDR q1, [x13], 16 LDR q2, [x14], 16 LDR q3, [x15], 16 FMLA v24.4s, v20.4s, v0.s[0] FMLA v25.4s, v21.4s, v0.s[0] FMLA v26.4s, v20.4s, v1.s[0] FMLA v27.4s, v21.4s, v1.s[0] LDP q22, q23, [x5], 32 FMLA v28.4s, v20.4s, v2.s[0] FMLA v29.4s, v21.4s, v2.s[0] FMLA v30.4s, v20.4s, v3.s[0] FMLA v31.4s, v21.4s, v3.s[0] LDP q16, q17, [x5], 32 FMLA v24.4s, v22.4s, v0.s[1] FMLA v25.4s, v23.4s, v0.s[1] FMLA v26.4s, v22.4s, v1.s[1] FMLA v27.4s, v23.4s, v1.s[1] LDP q18, q19, [x5], 32 FMLA v28.4s, v22.4s, v2.s[1] FMLA v29.4s, v23.4s, v2.s[1] FMLA v30.4s, v22.4s, v3.s[1] FMLA v31.4s, v23.4s, v3.s[1] FMLA v24.4s, v16.4s, v0.s[2] FMLA v25.4s, v17.4s, v0.s[2] FMLA v26.4s, v16.4s, v1.s[2] FMLA v27.4s, v17.4s, v1.s[2] FMLA v28.4s, v16.4s, v2.s[2] FMLA v29.4s, v17.4s, v2.s[2] FMLA v30.4s, v16.4s, v3.s[2] FMLA v31.4s, v17.4s, v3.s[2] FMLA v24.4s, v18.4s, v0.s[3] FMLA v25.4s, v19.4s, v0.s[3] FMLA v26.4s, v18.4s, v1.s[3] FMLA v27.4s, v19.4s, v1.s[3] FMLA v28.4s, v18.4s, v2.s[3] FMLA v29.4s, v19.4s, v2.s[3] SUBS x0, x0, 16 FMLA v30.4s, v18.4s, v3.s[3] FMLA v31.4s, v19.4s, v3.s[3] B.HS 2b # Is there a remainder?- 2 floats of A (8 bytes) or less TST x0, 15 B.NE 4f 3: # 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 6f 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 RET # Remainder- 2 floats of A (8 bytes) 4: # Is there a remainder?- 2 floats of A (8 bytes) TBZ x0, 3, 5f # Remainder- 2 floats of A (8 bytes) LDP q20, q21, [x5], 32 LDR d0, [x8], 8 LDR d1, [x13], 8 LDR d2, [x14], 8 LDR d3, [x15], 8 FMLA v24.4s, v20.4s, v0.s[0] FMLA v25.4s, v21.4s, v0.s[0] FMLA v26.4s, v20.4s, v1.s[0] FMLA v27.4s, v21.4s, v1.s[0] LDP q22, q23, [x5], 32 FMLA v28.4s, v20.4s, v2.s[0] FMLA v29.4s, v21.4s, v2.s[0] FMLA v30.4s, v20.4s, v3.s[0] FMLA v31.4s, v21.4s, v3.s[0] FMLA v24.4s, v22.4s, v0.s[1] FMLA v25.4s, v23.4s, v0.s[1] FMLA v26.4s, v22.4s, v1.s[1] FMLA v27.4s, v23.4s, v1.s[1] FMLA v28.4s, v22.4s, v2.s[1] FMLA v29.4s, v23.4s, v2.s[1] FMLA v30.4s, v22.4s, v3.s[1] FMLA v31.4s, v23.4s, v3.s[1] # Is there a remainder?- 1 float of A (4 bytes) TBZ x0, 2, 3b # Remainder- 1 float of A 5: LDR s0, [x8], 4 LDP q20, q21, [x5], 32 LDR s1, [x13], 4 LDR s2, [x14], 4 LDR s3, [x15], 4 FMLA v24.4s, v20.4s, v0.s[0] FMLA v25.4s, v21.4s, v0.s[0] FMLA v26.4s, v20.4s, v1.s[0] FMLA v27.4s, v21.4s, v1.s[0] FMLA v28.4s, v20.4s, v2.s[0] FMLA v29.4s, v21.4s, v2.s[0] FMLA v30.4s, v20.4s, v3.s[0] FMLA v31.4s, v21.4s, v3.s[0] B 3b # Store odd width 6: TBZ x1, 2, 7f 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 7: TBZ x1, 1, 8f 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] 8: TBZ x1, 0, 9f STR s30, [x7] STR s28, [x17] STR s26, [x16] STR s24, [x6] 9: RET END_FUNCTION xnn_f32_igemm_minmax_ukernel_4x8__aarch64_neonfma_ld128 #ifdef __ELF__ .section ".note.GNU-stack","",%progbits #endif