// 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_gemm${"inc" if INC else ""}_minmax_ukernel_4x12__aarch64_neonfma_cortex_a53( # size_t mr, x0 # size_t nc, x1 # size_t kc, x2 / x0 # const uint8_t*restrict a, x3 # size_t a_stride, x4 # const void*restrict w, x5 # uint8_t*restrict c, x6 # size_t cm_stride, x7 # size_t cn_stride, [sp] -> x14 $if INC: # const float*restrict acc, [sp + 8] -> x15 # const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) [sp + 16] -> (x8) $else: # const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) [sp + 8] -> (x8) # d8-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS. # A pointers # x3 a0 # x11 a1 # x12 a2 # x4 a3 / a_stride # C pointers # x6 c0 # x9 c1 # x10 c2 # x7 c3 / cm_stride # x8 temporary vector shadow register # Vector register usage and GPR shadows # a0 v0 # a1 v0[1] # a2 v1 # a3 v1[1] # a0 v2 # a1 v2[1] # a2 v3 # a3 v3[1] # B v6 v7 v8 # B v9 v10 v11 # B v14 v15 v16 # B v17 v18 v19 # C v20 v21 v22 # C v23 v24 v25 # C v26 v27 v28 # C v29 v30 v31 # Clamp v4 v5 # v12 to v13 unused. BEGIN_FUNCTION xnn_f32_gemm${"inc" if INC else ""}_minmax_ukernel_4x12__aarch64_neonfma_cortex_a53 $if INC: # Load cn_stride, acc LDP x14, x15, [sp] # Load params pointer LDR x8, [sp, 16] $else: # Load cn_stride, params pointer LDP x14, x8, [sp] # Load min/max values LD2R {v4.4s, v5.4s}, [x8] # Save d8-d11,d14,d15 on stack STP d8, d9, [sp, -48]! STP d10, d11, [sp, 16] STP d14, d15, [sp, 32] # Clamp A and C pointers CMP x0, 2 // if mr < 2 ADD x11, x3, x4 // a1 = a0 + a_stride ADD x9, x6, x7 // c1 = c0 + cm_stride CSEL x11, x3, x11, LO // a1 = a0 CSEL x9, x6, x9, LO // c1 = c0 ADD x12, x11, x4 // a2 = a1 + a_stride ADD x10, x9, x7 // c2 = c1 + cm_stride // if mr <= 2 CSEL x12, x11, x12, LS // a2 = a1 CSEL x10, x9, x10, LS // c2 = c1 CMP x0, 4 // if mr < 4 ADD x4, x12, x4 // a3 = a2 + a_stride ADD x7, x10, x7 // c3 = c2 + cm_stride CSEL x4, x12, x4, LO // a3 = a2 CSEL x7, x10, x7, LO // c3 = c2 0: $if INC: # Load initial accumulators LD1 {v20.16b, v21.16b, v22.16b}, [x15], 48 LD1 {v23.16b, v24.16b, v25.16b}, [x15], 48 LD1 {v26.16b, v27.16b, v28.16b}, [x15], 48 LD1 {v29.16b, v30.16b, v31.16b}, [x15], 48 PRFM PLDL1KEEP, [x3, 0] // Prefetch A PRFM PLDL1KEEP, [x3, 64] PRFM PLDL1KEEP, [x11, 0] PRFM PLDL1KEEP, [x11, 64] PRFM PLDL1KEEP, [x12, 0] PRFM PLDL1KEEP, [x12, 64] PRFM PLDL1KEEP, [x4, 0] PRFM PLDL1KEEP, [x4, 64] PRFM PLDL1KEEP, [x5, 0] // Prefetch B PRFM PLDL1KEEP, [x5, 64] PRFM PLDL1KEEP, [x5, 128] PRFM PLDL1KEEP, [x5, 192] PRFM PLDL1KEEP, [x5, 256] PRFM PLDL1KEEP, [x5, 320] $else: # Load initial bias from w into accumulators LD1 {v20.16b, v21.16b, v22.16b}, [x5], 48 MOV v23.16b, v20.16b PRFM PLDL1KEEP, [x3, 0] // Prefetch A PRFM PLDL1KEEP, [x3, 64] MOV v24.16b, v21.16b PRFM PLDL1KEEP, [x11, 0] PRFM PLDL1KEEP, [x11, 64] MOV v25.16b, v22.16b PRFM PLDL1KEEP, [x12, 0] PRFM PLDL1KEEP, [x12, 64] MOV v26.16b, v20.16b PRFM PLDL1KEEP, [x4, 0] PRFM PLDL1KEEP, [x4, 64] MOV v27.16b, v21.16b PRFM PLDL1KEEP, [x5, 0] // Prefetch B PRFM PLDL1KEEP, [x5, 64] MOV v28.16b, v22.16b PRFM PLDL1KEEP, [x5, 128] PRFM PLDL1KEEP, [x5, 192] MOV v29.16b, v20.16b PRFM PLDL1KEEP, [x5, 256] MOV v30.16b, v21.16b PRFM PLDL1KEEP, [x5, 320] MOV v31.16b, v22.16b # Is there at least 4 floats (16 bytes)? SUBS x0, x2, 16 // k = kc - 16 B.LO 4f SUBS x0, x0, 16 # Prologue - loads for first group of 24 FMA # Read first block of 4 A. LDR d0, [x3], 8 // a0 LDR d1, [x12], 8 // a2 LD1 {v0.d}[1], [x11], 8 // a1 LD1 {v1.d}[1], [x4], 8 // a3 LD1 {v6.16b, v7.16b, v8.16b}, [x5], 48 LD1 {v9.16b, v10.16b}, [x5], 32 LDR d11, [x5], 8 LDR x8, [x5], 8 # Is there at least 4 floats (16 bytes) for main loop? B.LO 2f # Main loop - 4 floats of A (16 bytes) 1: # First group of 24 fma. 8 blocks of 4 cycles. LDR + 3 FMA # A is loaded for 2nd group into v2/v3 # INS is 4 blocks (16 cycles) after load # BLOCK 0 LDR d2, [x3], 8 // a0 INS v11.d[1], x8 FMLA v20.4s, v6.4s, v0.s[0] LDR x8, [x11], 8 // a1 FMLA v23.4s, v6.4s, v0.s[2] FMLA v26.4s, v6.4s, v1.s[0] PRFM PLDL1KEEP, [x3, 128] // Prefetch A0 # BLOCK 1 LDR d3, [x12], 8 // a2 INS v2.d[1], x8 // a1 was loaded in block 0 FMLA v29.4s, v6.4s, v1.s[2] LDR x8, [x4], 8 // a3 FMLA v21.4s, v7.4s, v0.s[0] FMLA v24.4s, v7.4s, v0.s[2] PRFM PLDL1KEEP, [x11, 128] // Prefetch A1 # BLOCK 2 LDR d14, [x5] // vb0x0123 INS v3.d[1], x8 // a3 was loaded in block 1 FMLA v27.4s, v7.4s, v1.s[0] LDR x8, [x5, 8] FMLA v30.4s, v7.4s, v1.s[2] FMLA v22.4s, v8.4s, v0.s[0] PRFM PLDL1KEEP, [x12, 128] // Prefetch A2 # BLOCK 3 LDR d15, [x5, 16] // vb0x4567 INS v14.d[1], x8 // v14 was loaded in block 2 FMLA v25.4s, v8.4s, v0.s[2] LDR x8, [x5, 24] FMLA v28.4s, v8.4s, v1.s[0] FMLA v31.4s, v8.4s, v1.s[2] PRFM PLDL1KEEP, [x4, 128] // Prefetch A3 # BLOCK 4 LDR d16, [x5, 32] // vb0x89AB INS v15.d[1], x8 FMLA v20.4s, v9.4s, v0.s[1] LDR x8, [x5, 40] FMLA v23.4s, v9.4s, v0.s[3] FMLA v26.4s, v9.4s, v1.s[1] PRFM PLDL1KEEP, [x5, 320] // Prefetch B # BLOCK 5 LDR d17, [x5, 48] // vb1x0123 INS v16.d[1], x8 FMLA v29.4s, v9.4s, v1.s[3] LDR x8, [x5, 56] FMLA v21.4s, v10.4s, v0.s[1] FMLA v24.4s, v10.4s, v0.s[3] PRFM PLDL1KEEP, [x5, 384] // Prefetch B # BLOCK 6 LDR d18, [x5, 64] // vb1x4567 INS v17.d[1], x8 FMLA v27.4s, v10.4s, v1.s[1] LDR x8, [x5, 72] FMLA v30.4s, v10.4s, v1.s[3] FMLA v22.4s, v11.4s, v0.s[1] PRFM PLDL1KEEP, [x5, 448] // Prefetch B # BLOCK 7 LDR d19, [x5, 80] // vb1x89AB INS v18.d[1], x8 FMLA v25.4s, v11.4s, v0.s[3] LDR x8, [x5, 88] FMLA v28.4s, v11.4s, v1.s[1] FMLA v31.4s, v11.4s, v1.s[3] # Second group of 24 fma. 8 blocks of 4 cycles. LDR + 3 FMA # A is loaded for 1st group into v0/v1 # BLOCK 0 LDR d0, [x3], 8 // a0 INS v19.d[1], x8 FMLA v20.4s, v14.4s, v2.s[0] LDR x8, [x11], 8 // a1 FMLA v23.4s, v14.4s, v2.s[2] FMLA v26.4s, v14.4s, v3.s[0] # BLOCK 1 LDR d1, [x12], 8 // a2 INS v0.d[1], x8 // a1 FMLA v29.4s, v14.4s, v3.s[2] LDR x8, [x4], 8 // a3 FMLA v21.4s, v15.4s, v2.s[0] FMLA v24.4s, v15.4s, v2.s[2] # BLOCK 2 LDR d6, [x5, 96] // vb0x0123 INS v1.d[1], x8 // a3 FMLA v27.4s, v15.4s, v3.s[0] LDR x8, [x5, 104] FMLA v30.4s, v15.4s, v3.s[2] FMLA v22.4s, v16.4s, v2.s[0] # BLOCK 3 LDR d7, [x5, 112] // vb0x4567 INS v6.d[1], x8 FMLA v25.4s, v16.4s, v2.s[2] LDR x8, [x5, 120] FMLA v28.4s, v16.4s, v3.s[0] FMLA v31.4s, v16.4s, v3.s[2] # BLOCK 4 LDR d8, [x5, 128] // vb0x89AB INS v7.d[1], x8 FMLA v20.4s, v17.4s, v2.s[1] LDR x8, [x5, 136] FMLA v23.4s, v17.4s, v2.s[3] FMLA v26.4s, v17.4s, v3.s[1] # BLOCK 5 LDR d9, [x5, 144] // vb1x0123 INS v8.d[1], x8 FMLA v29.4s, v17.4s, v3.s[3] LDR x8, [x5, 152] FMLA v21.4s, v18.4s, v2.s[1] FMLA v24.4s, v18.4s, v2.s[3] # BLOCK 6 LDR d10, [x5, 160] // vb1x4567 INS v9.d[1], x8 FMLA v27.4s, v18.4s, v3.s[1] LDR x8, [x5, 168] FMLA v30.4s, v18.4s, v3.s[3] SUBS x0, x0, 16 FMLA v22.4s, v19.4s, v2.s[1] # BLOCK 7 LDR d11, [x5, 176] // vb1x89AB INS v10.d[1], x8 FMLA v25.4s, v19.4s, v2.s[3] LDR x8, [x5, 184] FMLA v28.4s, v19.4s, v3.s[1] ADD x5, x5, 192 FMLA v31.4s, v19.4s, v3.s[3] B.HS 1b # Epilogue # First block same as main loop. Second block has no loads. 2: # BLOCK 0 LDR d2, [x3], 8 // a0 INS v11.d[1], x8 FMLA v20.4s, v6.4s, v0.s[0] LDR x8, [x11], 8 // a1 FMLA v23.4s, v6.4s, v0.s[2] FMLA v26.4s, v6.4s, v1.s[0] # BLOCK 1 LDR d3, [x12], 8 // a2 INS v2.d[1], x8 // a1 was loaded in block 0 FMLA v29.4s, v6.4s, v1.s[2] LDR x8, [x4], 8 // a3 FMLA v21.4s, v7.4s, v0.s[0] FMLA v24.4s, v7.4s, v0.s[2] # BLOCK 2 LDR d14, [x5] // vb0x0123 INS v3.d[1], x8 // a3 was loaded in block 1 FMLA v27.4s, v7.4s, v1.s[0] LDR x8, [x5, 8] FMLA v30.4s, v7.4s, v1.s[2] FMLA v22.4s, v8.4s, v0.s[0] # BLOCK 3 LDR d15, [x5, 16] // vb0x4567 INS v14.d[1], x8 // v14 was loaded in block 2 FMLA v25.4s, v8.4s, v0.s[2] LDR x8, [x5, 24] FMLA v28.4s, v8.4s, v1.s[0] FMLA v31.4s, v8.4s, v1.s[2] # BLOCK 4 LDR d16, [x5, 32] // vb0x89AB INS v15.d[1], x8 FMLA v20.4s, v9.4s, v0.s[1] LDR x8, [x5, 40] FMLA v23.4s, v9.4s, v0.s[3] FMLA v26.4s, v9.4s, v1.s[1] # BLOCK 5 LDR d17, [x5, 48] // vb1x0123 INS v16.d[1], x8 FMLA v29.4s, v9.4s, v1.s[3] LDR x8, [x5, 56] FMLA v21.4s, v10.4s, v0.s[1] FMLA v24.4s, v10.4s, v0.s[3] # BLOCK 6 LDR d18, [x5, 64] // vb1x4567 INS v17.d[1], x8 FMLA v27.4s, v10.4s, v1.s[1] LDR x8, [x5, 72] FMLA v30.4s, v10.4s, v1.s[3] FMLA v22.4s, v11.4s, v0.s[1] # BLOCK 7 LDR d19, [x5, 80] // vb1x89AB INS v18.d[1], x8 FMLA v25.4s, v11.4s, v0.s[3] LDR x8, [x5, 88] FMLA v28.4s, v11.4s, v1.s[1] FMLA v31.4s, v11.4s, v1.s[3] # Second group of 24 fma. 8 blocks of 4 cycles. LDR + 3 FMA # A is loaded for 1st group into v0/v1 # BLOCK 0 INS v19.d[1], x8 FMLA v20.4s, v14.4s, v2.s[0] FMLA v23.4s, v14.4s, v2.s[2] FMLA v26.4s, v14.4s, v3.s[0] # BLOCK 1 FMLA v29.4s, v14.4s, v3.s[2] FMLA v21.4s, v15.4s, v2.s[0] FMLA v24.4s, v15.4s, v2.s[2] # BLOCK 2 FMLA v27.4s, v15.4s, v3.s[0] FMLA v30.4s, v15.4s, v3.s[2] FMLA v22.4s, v16.4s, v2.s[0] # BLOCK 3 FMLA v25.4s, v16.4s, v2.s[2] FMLA v28.4s, v16.4s, v3.s[0] FMLA v31.4s, v16.4s, v3.s[2] # BLOCK 4 FMLA v20.4s, v17.4s, v2.s[1] FMLA v23.4s, v17.4s, v2.s[3] FMLA v26.4s, v17.4s, v3.s[1] # BLOCK 5 FMLA v29.4s, v17.4s, v3.s[3] FMLA v21.4s, v18.4s, v2.s[1] FMLA v24.4s, v18.4s, v2.s[3] # BLOCK 6 FMLA v27.4s, v18.4s, v3.s[1] FMLA v30.4s, v18.4s, v3.s[3] FMLA v22.4s, v19.4s, v2.s[1] TST x0, 15 # BLOCK 7 FMLA v25.4s, v19.4s, v2.s[3] FMLA v28.4s, v19.4s, v3.s[1] ADD x5, x5, 96 FMLA v31.4s, v19.4s, v3.s[3] # Is there a remainder?- 2 floats of A (8 bytes) or less B.NE 4f 3: # Clamp FMAX v20.4s, v20.4s, v4.4s SUBS x1, x1, 12 FMAX v21.4s, v21.4s, v4.4s FMAX v22.4s, v22.4s, v4.4s FMAX v23.4s, v23.4s, v4.4s 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 v20.4s, v20.4s, v5.4s FMIN v21.4s, v21.4s, v5.4s FMIN v22.4s, v22.4s, v5.4s FMIN v23.4s, v23.4s, v5.4s 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 12 B.LO 6f $if INC: ST1 {v29.16b, v30.16b, v31.16b}, [x7], x14 SUB x3, x3, x2 // a0 -= kc ST1 {v26.16b, v27.16b, v28.16b}, [x10], x14 SUB x11, x11, x2 // a1 -= kc ST1 {v23.16b, v24.16b, v25.16b}, [x9], x14 SUB x12, x12, x2 // a2 -= kc ST1 {v20.16b, v21.16b, v22.16b}, [x6], x14 SUB x4, x4, x2 // a3 -= kc $else: ST1 {v20.16b, v21.16b, v22.16b}, [x6], x14 SUB x3, x3, x2 // a0 -= kc ST1 {v23.16b, v24.16b, v25.16b}, [x9], x14 SUB x11, x11, x2 // a1 -= kc ST1 {v26.16b, v27.16b, v28.16b}, [x10], x14 SUB x12, x12, x2 // a2 -= kc ST1 {v29.16b, v30.16b, v31.16b}, [x7], x14 SUB x4, x4, x2 // a3 -= kc B.HI 0b # Restore d8-d11,d14,d15 from stack LDP d14, d15, [sp, 32] LDP d10, d11, [sp, 16] LDP d8, d9, [sp], 48 RET 4: # Is there a remainder?- 2 floats of A (8 bytes) TBZ x0, 3, 5f # Remainder - 2 floats of A (8 bytes) # Read first block of 4 A. LDR d0, [x3], 8 // a0 LD1 {v6.16b, v7.16b, v8.16b}, [x5], 48 LDR d1, [x11], 8 // a1 LDR d2, [x12], 8 // a2 LDR d3, [x4], 8 // a3 LD1 {v9.16b, v10.16b, v11.16b}, [x5], 48 # First block of 3 B FMLA v20.4s, v6.4s, v0.s[0] FMLA v23.4s, v6.4s, v1.s[0] FMLA v26.4s, v6.4s, v2.s[0] FMLA v29.4s, v6.4s, v3.s[0] FMLA v21.4s, v7.4s, v0.s[0] FMLA v24.4s, v7.4s, v1.s[0] FMLA v27.4s, v7.4s, v2.s[0] FMLA v30.4s, v7.4s, v3.s[0] FMLA v22.4s, v8.4s, v0.s[0] FMLA v25.4s, v8.4s, v1.s[0] FMLA v28.4s, v8.4s, v2.s[0] FMLA v31.4s, v8.4s, v3.s[0] # Second block of 3 B FMLA v20.4s, v9.4s, v0.s[1] FMLA v23.4s, v9.4s, v1.s[1] FMLA v26.4s, v9.4s, v2.s[1] FMLA v29.4s, v9.4s, v3.s[1] FMLA v21.4s, v10.4s, v0.s[1] FMLA v24.4s, v10.4s, v1.s[1] FMLA v27.4s, v10.4s, v2.s[1] FMLA v30.4s, v10.4s, v3.s[1] FMLA v22.4s, v11.4s, v0.s[1] FMLA v25.4s, v11.4s, v1.s[1] FMLA v28.4s, v11.4s, v2.s[1] FMLA v31.4s, v11.4s, v3.s[1] TBZ x0, 2, 3b 5: # Remainder - 1 float of A (4 bytes) LDR s0, [x3], 4 // a0 LD1 {v6.16b, v7.16b, v8.16b}, [x5], 48 LDR s1, [x11], 4 // a1 LDR s2, [x12], 4 // a2 LDR s3, [x4], 4 // a3 FMLA v20.4s, v6.4s, v0.s[0] FMLA v23.4s, v6.4s, v1.s[0] FMLA v26.4s, v6.4s, v2.s[0] FMLA v29.4s, v6.4s, v3.s[0] FMLA v21.4s, v7.4s, v0.s[0] FMLA v24.4s, v7.4s, v1.s[0] FMLA v27.4s, v7.4s, v2.s[0] FMLA v30.4s, v7.4s, v3.s[0] FMLA v22.4s, v8.4s, v0.s[0] FMLA v25.4s, v8.4s, v1.s[0] FMLA v28.4s, v8.4s, v2.s[0] FMLA v31.4s, v8.4s, v3.s[0] B 3b 6: ADD x1, x1, 12 # Store odd channels TBZ x1, 3, 7f $if INC: STP q29, q30, [x7], 32 MOV v29.16b, v31.16b STP q26, q27, [x10], 32 MOV v26.16b, v28.16b STP q23, q24, [x9], 32 MOV v23.16b, v25.16b STP q20, q21, [x6], 32 MOV v20.16b, v22.16b $else: STP q20, q21, [x6], 32 MOV v20.16b, v22.16b STP q23, q24, [x9], 32 MOV v23.16b, v25.16b STP q26, q27, [x10], 32 MOV v26.16b, v28.16b STP q29, q30, [x7], 32 MOV v29.16b, v31.16b 7: TBZ x1, 2, 8f $if INC: STR q29, [x7], 16 MOV v29.16b, v30.16b STR q26, [x10], 16 MOV v26.16b, v27.16b STR q23, [x9], 16 MOV v23.16b, v24.16b STR q20, [x6], 16 MOV v20.16b, v21.16b $else: STR q20, [x6], 16 MOV v20.16b, v21.16b STR q23, [x9], 16 MOV v23.16b, v24.16b STR q26, [x10], 16 MOV v26.16b, v27.16b STR q29, [x7], 16 MOV v29.16b, v30.16b 8: TBZ x1, 1, 9f $if INC: STR d29, [x7], 8 DUP d29, v29.d[1] STR d26, [x10], 8 DUP d26, v26.d[1] STR d23, [x9], 8 DUP d23, v23.d[1] STR d20, [x6], 8 DUP d20, v20.d[1] $else: STR d20, [x6], 8 DUP d20, v20.d[1] STR d23, [x9], 8 DUP d23, v23.d[1] STR d26, [x10], 8 DUP d26, v26.d[1] STR d29, [x7], 8 DUP d29, v29.d[1] 9: TBZ x1, 0, 10f $if INC: STR s29, [x7] STR s26, [x10] STR s23, [x9] STR s20, [x6] $else: STR s20, [x6] STR s23, [x9] STR s26, [x10] STR s29, [x7] 10: # Restore d8-d11,d14,d15 from stack LDP d14, d15, [sp, 32] LDP d10, d11, [sp, 16] LDP d8, d9, [sp], 48 RET END_FUNCTION xnn_f32_gemm${"inc" if INC else ""}_minmax_ukernel_4x12__aarch64_neonfma_cortex_a53 #ifdef __ELF__ .section ".note.GNU-stack","",%progbits #endif