| // Copyright 2022 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 <cstddef> |
| #include <limits> |
| |
| #include <xnnpack/aarch64-assembler.h> |
| #include <xnnpack/allocator.h> |
| #include <xnnpack/gemm.h> |
| |
| namespace xnnpack { |
| namespace aarch64 { |
| namespace { |
| class Generator : public Assembler { |
| using Assembler::Assembler; |
| |
| public: |
| void generate(bool prefetch, size_t nc, size_t kc, float min, float max); |
| }; |
| |
| // void xnn_f32_gemm_minmax_ukernel_1x8__aarch64_neonfma_prfm_cortex_a75( |
| // size_t mr, (x0) - unused. mr = 1 |
| // size_t nc, x1 |
| // size_t kc, x2 / x0 |
| // const uint8_t*restrict a, x3 |
| // size_t a_stride, (x4) - unused |
| // const void*restrict w, x5 |
| // uint8_t*restrict c, x6 |
| // size_t cm_stride, (x7) - unused |
| // size_t cn_stride, [sp] -> x14 |
| // 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 pointer |
| // x3 a0 |
| |
| // C pointer |
| // x6 c0 |
| |
| // Clamp v4 v5 |
| |
| // Converted from: src/f32-gemm/gen/1x8-minmax-aarch64-neonfma-prfm-cortex-a75.S |
| void Generator::generate(bool prefetch, size_t nc, size_t kc, float min, float max) |
| { |
| Label l0, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12; |
| const bool clamp_min = min != -std::numeric_limits<float>::infinity(); |
| const bool clamp_max = max != +std::numeric_limits<float>::infinity(); |
| |
| // Load cn_stride, params pointer |
| ldp(x14, x8, mem[sp]); |
| |
| // Load min/max values |
| if (clamp_max) { |
| ld2r({v4.v4s(), v5.v4s()}, mem[x8]); |
| } else if (clamp_min) { |
| if (min == 0.f) { |
| movi(v4.v4s(), 0); |
| } else { |
| ld1r({v4.v4s()}, mem[x8]); |
| } |
| } |
| |
| bind(l0); |
| // Load initial bias from w into accumulators |
| ldp(q16, q17, mem[x5], 32); |
| |
| movi(v18.v4s(), 0); // second set of C for pipelining FMLA |
| if (prefetch) { |
| prfm(kPLDL1KEEP, mem[x5]); |
| } |
| movi(v19.v4s(), 0); |
| if (prefetch) { |
| prfm(kPLDL1KEEP, mem[x5, 64]); |
| prfm(kPLDL1KEEP, mem[x5, 128]); |
| prfm(kPLDL1KEEP, mem[x5, 192]); |
| } |
| |
| // Is there at least 8 floats (32 bytes) for prologue + epilogue? |
| subs(x0, x2, 32); // k = kc - 32 |
| |
| b_lo(l3); |
| |
| // 16 prologue |
| // Read first block of 1 A and B. |
| ldp(q20, q21, mem[x5], 32); |
| ldp(q22, q23, mem[x5], 32); |
| ldp(q24, q25, mem[x5], 32); |
| ldp(q26, q27, mem[x5], 32); |
| ldr(q0, mem[x3], 16); |
| |
| // Is there at least 32. yes do main loop |
| subs(x0, x0, 32); |
| b_lo(l2); |
| |
| // Main loop - 8 floats of A (32 bytes) |
| bind(l1); |
| // First block of 4. FMA for first 4, loads for 2nd block of 4. |
| fmla(v16.v4s(), v20.v4s(), v0.s()[0]); |
| ldr(q1, mem[x3], 16); |
| fmla(v17.v4s(), v21.v4s(), v0.s()[0]); |
| ldp(q20, q21, mem[x5], 32); |
| fmla(v18.v4s(), v22.v4s(), v0.s()[1]); |
| if (prefetch) { |
| prfm(kPLDL1KEEP, mem[x5, 96]); |
| } |
| fmla(v19.v4s(), v23.v4s(), v0.s()[1]); |
| ldp(q22, q23, mem[x5], 32); |
| fmla(v16.v4s(), v24.v4s(), v0.s()[2]); |
| fmla(v17.v4s(), v25.v4s(), v0.s()[2]); |
| ldp(q24, q25, mem[x5], 32); |
| fmla(v18.v4s(), v26.v4s(), v0.s()[3]); |
| fmla(v19.v4s(), v27.v4s(), v0.s()[3]); |
| ldp(q26, q27, mem[x5], 32); |
| |
| // Second block of 4. FMA for second 4, loads for 1st block of 4. |
| fmla(v16.v4s(), v20.v4s(), v1.s()[0]); |
| ldr(q0, mem[x3], 16); |
| fmla(v17.v4s(), v21.v4s(), v1.s()[0]); |
| ldp(q20, q21, mem[x5], 32); |
| fmla(v18.v4s(), v22.v4s(), v1.s()[1]); |
| fmla(v19.v4s(), v23.v4s(), v1.s()[1]); |
| ldp(q22, q23, mem[x5], 32); |
| fmla(v16.v4s(), v24.v4s(), v1.s()[2]); |
| fmla(v17.v4s(), v25.v4s(), v1.s()[2]); |
| ldp(q24, q25, mem[x5], 32); |
| fmla(v18.v4s(), v26.v4s(), v1.s()[3]); |
| fmla(v19.v4s(), v27.v4s(), v1.s()[3]); |
| subs(x0, x0, 32); |
| ldp(q26, q27, mem[x5], 32); |
| b_hs(l1); |
| |
| bind(l2); |
| // Epilogue |
| |
| // First block of 4. FMA for first 4, loads for 2nd block of 4. |
| fmla(v16.v4s(), v20.v4s(), v0.s()[0]); |
| ldr(q1, mem[x3], 16); |
| fmla(v17.v4s(), v21.v4s(), v0.s()[0]); |
| ldp(q20, q21, mem[x5], 32); |
| fmla(v18.v4s(), v22.v4s(), v0.s()[1]); |
| fmla(v19.v4s(), v23.v4s(), v0.s()[1]); |
| ldp(q22, q23, mem[x5], 32); |
| fmla(v16.v4s(), v24.v4s(), v0.s()[2]); |
| fmla(v17.v4s(), v25.v4s(), v0.s()[2]); |
| ldp(q24, q25, mem[x5], 32); |
| fmla(v18.v4s(), v26.v4s(), v0.s()[3]); |
| fmla(v19.v4s(), v27.v4s(), v0.s()[3]); |
| ldp(q26, q27, mem[x5], 32); |
| |
| // Second block of 4. no loads |
| fmla(v16.v4s(), v20.v4s(), v1.s()[0]); |
| fmla(v17.v4s(), v21.v4s(), v1.s()[0]); |
| fmla(v18.v4s(), v22.v4s(), v1.s()[1]); |
| fmla(v19.v4s(), v23.v4s(), v1.s()[1]); |
| fmla(v16.v4s(), v24.v4s(), v1.s()[2]); |
| fmla(v17.v4s(), v25.v4s(), v1.s()[2]); |
| fmla(v18.v4s(), v26.v4s(), v1.s()[3]); |
| fmla(v19.v4s(), v27.v4s(), v1.s()[3]); |
| |
| bind(l3); |
| // Is there a remainder?- 4 floats of A (16 bytes) |
| tbnz(x0, 4, l5); |
| // Is there a remainder?- 2 floats of A (8 bytes) |
| tbnz(x0, 3, l6); |
| // Is there a remainder?- 1 floats of A (4 bytes) |
| tbnz(x0, 2, l8); |
| |
| bind(l4); |
| fadd(v16.v4s(), v16.v4s(), v18.v4s()); |
| subs(x1, x1, 8); |
| fadd(v17.v4s(), v17.v4s(), v19.v4s()); |
| |
| // Clamp |
| if (clamp_min) { |
| fmax(v16.v4s(), v16.v4s(), v4.v4s()); |
| fmax(v17.v4s(), v17.v4s(), v4.v4s()); |
| } |
| if (clamp_max) { |
| fmin(v16.v4s(), v16.v4s(), v5.v4s()); |
| fmin(v17.v4s(), v17.v4s(), v5.v4s()); |
| } |
| |
| // Store full 1 x 8 |
| b_lo(l9); |
| |
| stp(q16, q17, mem[x6]); |
| add(x6, x6, x14); |
| |
| sub(x3, x3, x2); // a0 -= kc |
| |
| b_hi(l0); |
| |
| ret(); |
| |
| bind(l5); |
| // Remainder- 4 floats of A (16 bytes) |
| ldp(q20, q21, mem[x5], 32); |
| ldr(q0, mem[x3], 16); |
| fmla(v16.v4s(), v20.v4s(), v0.s()[0]); |
| fmla(v17.v4s(), v21.v4s(), v0.s()[0]); |
| ldp(q22, q23, mem[x5], 32); |
| ldp(q24, q25, mem[x5], 32); |
| ldp(q26, q27, mem[x5], 32); |
| fmla(v18.v4s(), v22.v4s(), v0.s()[1]); |
| fmla(v19.v4s(), v23.v4s(), v0.s()[1]); |
| fmla(v16.v4s(), v24.v4s(), v0.s()[2]); |
| fmla(v17.v4s(), v25.v4s(), v0.s()[2]); |
| fmla(v18.v4s(), v26.v4s(), v0.s()[3]); |
| fmla(v19.v4s(), v27.v4s(), v0.s()[3]); |
| |
| tbz(x0, 3, l7); |
| bind(l6); |
| // Remainder- 2 floats of A (8 bytes) |
| ldp(q20, q21, mem[x5], 32); |
| ldr(d0, mem[x3], 8); |
| fmla(v16.v4s(), v20.v4s(), v0.s()[0]); |
| fmla(v17.v4s(), v21.v4s(), v0.s()[0]); |
| ldp(q22, q23, mem[x5], 32); |
| fmla(v18.v4s(), v22.v4s(), v0.s()[1]); |
| fmla(v19.v4s(), v23.v4s(), v0.s()[1]); |
| bind(l7); |
| tbz(x0, 2, l4); |
| bind(l8); |
| // Remainder- 1 float of A (4 bytes) |
| ldp(q20, q21, mem[x5], 32); |
| ldr(s0, mem[x3], 4); |
| fmla(v16.v4s(), v20.v4s(), v0.s()[0]); |
| fmla(v17.v4s(), v21.v4s(), v0.s()[0]); |
| b(l4); |
| |
| // Store odd channels |
| bind(l9); |
| tbz(x1, 2, l10); |
| str(q16, mem[x6], 16); |
| mov(v16.v16b(), v17.v16b()); |
| |
| bind(l10); |
| tbz(x1, 1, l11); |
| str(d16, mem[x6], 8); |
| dup(d16, v16.d()[1]); |
| |
| bind(l11); |
| tbz(x1, 0, l12); |
| str(s16, mem[x6]); |
| bind(l12); |
| ret(); |
| } |
| } // namespace |
| } // namespace aarch64 |
| } // namespace xnnpack |
| |
| xnn_status xnn_generate_f32_gemm_ukernel_1x8__aarch64_neonfma_cortex_a75( |
| xnn_code_buffer* code, size_t nc, size_t kc, const void* params) |
| { |
| using namespace xnnpack::aarch64; |
| Generator g(code); |
| const jit_gemm_params* gemm_params = static_cast<const jit_gemm_params*>(params); |
| g.generate(false, nc, kc, gemm_params->f32_minmax.min, gemm_params->f32_minmax.max); |
| g.finalize(); |
| if (g.error() != xnnpack::Error::kNoError) { |
| return xnn_status_invalid_state; |
| } |
| return xnn_status_success; |
| } |
| |
| xnn_status xnn_generate_f32_gemm_ukernel_1x8__aarch64_neonfma_prfm_cortex_a75( |
| xnn_code_buffer* code, size_t nc, size_t kc, const void* params) |
| { |
| using namespace xnnpack::aarch64; |
| Generator g(code); |
| const jit_gemm_params* gemm_params = static_cast<const jit_gemm_params*>(params); |
| g.generate(true, nc, kc, gemm_params->f32_minmax.min, gemm_params->f32_minmax.max); |
| g.finalize(); |
| if (g.error() != xnnpack::Error::kNoError) { |
| return xnn_status_invalid_state; |
| } |
| return xnn_status_success; |
| } |