| /* |
| * Copyright (c) 2017-2019 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #ifdef __aarch64__ |
| |
| #include <arm_neon.h> |
| |
| #include "../../asmlib.hpp" |
| |
| // Kernel implementation. |
| // |
| // Assume that "Apanel" points to a chunk of A blocks (each size 8xK) in read-order. |
| // Assume that "Bpanel" points to a chunk of B blocks (each size 12xK) in read-order. |
| // Assume that "Cpanel" points to a chunk of C output blocks (each size |
| // 12x8), the chunks being arranged in a row major fashion. |
| // |
| // Note that the intent of this is that either ablocks or bblocks will be 1 |
| // - this construction allows the output loop to proceed in either order. |
| |
| namespace arm_gemm { |
| |
| void a64_sgemm_asimd_12x8(const float *Apanel, const float *Bpanel, float *Cpanel, int ablocks, int bblocks, int K) { |
| const float *a_ptr = Apanel; |
| float *c_ptr = Cpanel; |
| |
| for (int yb=0; yb<ablocks; yb++) { |
| const float *a_ptr0 = a_ptr; |
| const float *b_ptr = Bpanel; |
| |
| for (int xb=0; xb<bblocks; xb++) { |
| a_ptr = a_ptr0; |
| // Fix up for odd lengths - set a flag if K is odd, but make |
| // sure we round up the iteration count. |
| int oddk = (K & 1); |
| int k = ((K+1)/2) - 1; |
| |
| register float32x4_t a0 asm("v0"); |
| register float32x4_t a1 asm("v1"); |
| register float32x4_t b0 asm("v2"); |
| register float32x4_t b1 asm("v3"); |
| register float32x4_t b2 asm("v4"); |
| register float32x4_t a0a asm("v5"); |
| register float32x4_t a1a asm("v6"); |
| |
| __asm __volatile ( |
| // Initialize result registers, load initial operands, prime prefetches. |
| "movi v8.4s, #0x0\n" |
| "ldr %q[a0], [%[a_ptr]]\n" |
| "movi v9.4s, #0x0\n" |
| "ldr %q[b0], [%[b_ptr]]\n" |
| "movi v10.4s, #0x0\n" |
| "ldr %q[a1], [%[a_ptr], #16]\n" |
| "movi v11.4s, #0x0\n" |
| "ldr %q[b1], [%[b_ptr], #16]\n" |
| "movi v12.4s, #0x0\n" |
| ASM_PREFETCH("[%[b_ptr], #64]") |
| "movi v13.4s, #0x0\n" |
| ASM_PREFETCH("[%[a_ptr], #64]") |
| "movi v14.4s, #0x0\n" |
| ASM_PREFETCH("[%[b_ptr], #128]") |
| "movi v15.4s, #0x0\n" |
| ASM_PREFETCH("[%[a_ptr], #128]") |
| "movi v16.4s, #0x0\n" |
| ASM_PREFETCH("[%[b_ptr], #192]") |
| "movi v17.4s, #0x0\n" |
| ASM_PREFETCH("[%[b_ptr], #256]") |
| "movi v18.4s, #0x0\n" |
| ASM_PREFETCH("[%[a_ptr], #192]") |
| "movi v19.4s, #0x0\n" |
| ASM_PREFETCH("[%[b_ptr], #320]") |
| "movi v20.4s, #0x0\n" |
| ASM_PREFETCH("[%[a_ptr], #256]") |
| "movi v21.4s, #0x0\n" |
| ASM_PREFETCH("[%[b_ptr], #384]") |
| "movi v22.4s, #0x0\n" |
| "movi v23.4s, #0x0\n" |
| "movi v24.4s, #0x0\n" |
| "movi v25.4s, #0x0\n" |
| "movi v26.4s, #0x0\n" |
| "movi v27.4s, #0x0\n" |
| "movi v28.4s, #0x0\n" |
| "movi v29.4s, #0x0\n" |
| "movi v30.4s, #0x0\n" |
| "movi v31.4s, #0x0\n" |
| |
| // Skip loop if we are doing zero iterations of it. |
| "cbz %w[k], 4f\n" |
| |
| // Loop proper |
| "1:\n" |
| "fmla v8.4s , %[b0].4s, %[a0].s[0]\n" |
| "fmla v9.4s , %[b0].4s, %[a0].s[1]\n" |
| "ldr %q[b2], [%[b_ptr], #32]\n" |
| "fmla v10.4s, %[b0].4s, %[a0].s[2]\n" |
| "fmla v11.4s, %[b0].4s, %[a0].s[3]\n" |
| "ldr %q[a0a], [%[a_ptr], #32]\n" |
| "fmla v12.4s, %[b0].4s, %[a1].s[0]\n" |
| "fmla v13.4s, %[b0].4s, %[a1].s[1]\n" |
| "ldr %q[a1a], [%[a_ptr], #48]\n" |
| "fmla v14.4s, %[b0].4s, %[a1].s[2]\n" |
| "fmla v15.4s, %[b0].4s, %[a1].s[3]\n" |
| "ldr %q[b0], [%[b_ptr], #48]\n" |
| |
| "fmla v16.4s, %[b1].4s, %[a0].s[0]\n" |
| "fmla v17.4s, %[b1].4s, %[a0].s[1]\n" |
| ASM_PREFETCH("[%[a_ptr], #320]") |
| "fmla v18.4s, %[b1].4s, %[a0].s[2]\n" |
| "fmla v19.4s, %[b1].4s, %[a0].s[3]\n" |
| "fmla v20.4s, %[b1].4s, %[a1].s[0]\n" |
| "fmla v21.4s, %[b1].4s, %[a1].s[1]\n" |
| "fmla v22.4s, %[b1].4s, %[a1].s[2]\n" |
| "fmla v23.4s, %[b1].4s, %[a1].s[3]\n" |
| "ldr %q[b1], [%[b_ptr], #64]\n" |
| |
| "fmla v24.4s, %[b2].4s, %[a0].s[0]\n" |
| "fmla v25.4s, %[b2].4s, %[a0].s[1]\n" |
| ASM_PREFETCH("[%[b_ptr], #448]") |
| "fmla v26.4s, %[b2].4s, %[a0].s[2]\n" |
| "fmla v27.4s, %[b2].4s, %[a0].s[3]\n" |
| "fmla v28.4s, %[b2].4s, %[a1].s[0]\n" |
| "fmla v29.4s, %[b2].4s, %[a1].s[1]\n" |
| "fmla v30.4s, %[b2].4s, %[a1].s[2]\n" |
| "fmla v31.4s, %[b2].4s, %[a1].s[3]\n" |
| "ldr %q[b2], [%[b_ptr], #80]\n" |
| |
| "fmla v8.4s , %[b0].4s, %[a0a].s[0]\n" |
| "fmla v9.4s , %[b0].4s, %[a0a].s[1]\n" |
| "ldr %q[a0], [%[a_ptr], #64]\n" |
| "fmla v10.4s, %[b0].4s, %[a0a].s[2]\n" |
| "fmla v11.4s, %[b0].4s, %[a0a].s[3]\n" |
| "fmla v12.4s, %[b0].4s, %[a1a].s[0]\n" |
| "ldr %q[a1], [%[a_ptr], #80]\n" |
| "fmla v13.4s, %[b0].4s, %[a1a].s[1]\n" |
| "fmla v14.4s, %[b0].4s, %[a1a].s[2]\n" |
| "fmla v15.4s, %[b0].4s, %[a1a].s[3]\n" |
| "ldr %q[b0], [%[b_ptr], #96]\n" |
| |
| "fmla v16.4s, %[b1].4s, %[a0a].s[0]\n" |
| "fmla v17.4s, %[b1].4s, %[a0a].s[1]\n" |
| ASM_PREFETCH("[%[b_ptr], #512]") |
| "fmla v18.4s, %[b1].4s, %[a0a].s[2]\n" |
| "fmla v19.4s, %[b1].4s, %[a0a].s[3]\n" |
| "fmla v20.4s, %[b1].4s, %[a1a].s[0]\n" |
| "fmla v21.4s, %[b1].4s, %[a1a].s[1]\n" |
| "fmla v22.4s, %[b1].4s, %[a1a].s[2]\n" |
| "fmla v23.4s, %[b1].4s, %[a1a].s[3]\n" |
| "ldr %q[b1], [%[b_ptr], #112]\n" |
| |
| "fmla v24.4s, %[b2].4s, %[a0a].s[0]\n" |
| "fmla v25.4s, %[b2].4s, %[a0a].s[1]\n" |
| "add %[a_ptr], %[a_ptr], #64\n" |
| "fmla v26.4s, %[b2].4s, %[a0a].s[2]\n" |
| "fmla v27.4s, %[b2].4s, %[a0a].s[3]\n" |
| "add %[b_ptr], %[b_ptr], #96\n" |
| "fmla v28.4s, %[b2].4s, %[a1a].s[0]\n" |
| "fmla v29.4s, %[b2].4s, %[a1a].s[1]\n" |
| "subs %w[k], %w[k], #1\n" |
| "fmla v30.4s, %[b2].4s, %[a1a].s[2]\n" |
| "fmla v31.4s, %[b2].4s, %[a1a].s[3]\n" |
| "bne 1b\n" |
| |
| // Target to use when K is 1 or 2 (i.e. zero iterations of main loop) |
| "4:\n" |
| |
| // Branch to alternative tail for odd K |
| "cbnz %w[oddk], 2f\n" |
| |
| // Detached final iteration (even K) |
| "fmla v8.4s , %[b0].4s, %[a0].s[0]\n" |
| "fmla v9.4s , %[b0].4s, %[a0].s[1]\n" |
| "ldr %q[b2], [%[b_ptr], #32]\n" |
| "fmla v10.4s, %[b0].4s, %[a0].s[2]\n" |
| "fmla v11.4s, %[b0].4s, %[a0].s[3]\n" |
| "ldr %q[a0a], [%[a_ptr], #32]\n" |
| "fmla v12.4s, %[b0].4s, %[a1].s[0]\n" |
| "fmla v13.4s, %[b0].4s, %[a1].s[1]\n" |
| "ldr %q[a1a], [%[a_ptr], #48]\n" |
| "fmla v14.4s, %[b0].4s, %[a1].s[2]\n" |
| "fmla v15.4s, %[b0].4s, %[a1].s[3]\n" |
| "ldr %q[b0], [%[b_ptr], #48]\n" |
| |
| "fmla v16.4s, %[b1].4s, %[a0].s[0]\n" |
| "fmla v17.4s, %[b1].4s, %[a0].s[1]\n" |
| "fmla v18.4s, %[b1].4s, %[a0].s[2]\n" |
| "fmla v19.4s, %[b1].4s, %[a0].s[3]\n" |
| "fmla v20.4s, %[b1].4s, %[a1].s[0]\n" |
| "fmla v21.4s, %[b1].4s, %[a1].s[1]\n" |
| "fmla v22.4s, %[b1].4s, %[a1].s[2]\n" |
| "fmla v23.4s, %[b1].4s, %[a1].s[3]\n" |
| "ldr %q[b1], [%[b_ptr], #64]\n" |
| |
| "fmla v24.4s, %[b2].4s, %[a0].s[0]\n" |
| "fmla v25.4s, %[b2].4s, %[a0].s[1]\n" |
| "add %[a_ptr], %[a_ptr], #64\n" |
| "fmla v26.4s, %[b2].4s, %[a0].s[2]\n" |
| "fmla v27.4s, %[b2].4s, %[a0].s[3]\n" |
| "fmla v28.4s, %[b2].4s, %[a1].s[0]\n" |
| "fmla v29.4s, %[b2].4s, %[a1].s[1]\n" |
| "fmla v30.4s, %[b2].4s, %[a1].s[2]\n" |
| "fmla v31.4s, %[b2].4s, %[a1].s[3]\n" |
| "ldr %q[b2], [%[b_ptr], #80]\n" |
| |
| "fmla v8.4s , %[b0].4s, %[a0a].s[0]\n" |
| "fmla v16.4s, %[b1].4s, %[a0a].s[0]\n" |
| "add %[b_ptr], %[b_ptr], #96\n" |
| "fmla v9.4s , %[b0].4s, %[a0a].s[1]\n" |
| "str q8, [%[c_ptr], #0]\n" |
| "fmla v17.4s, %[b1].4s, %[a0a].s[1]\n" |
| "str q16, [%[c_ptr], #16]\n" |
| "fmla v24.4s, %[b2].4s, %[a0a].s[0]\n" |
| "str q24, [%[c_ptr], #32]\n" |
| |
| "fmla v25.4s, %[b2].4s, %[a0a].s[1]\n" |
| "str q9, [%[c_ptr], #48]\n" |
| "fmla v10.4s, %[b0].4s, %[a0a].s[2]\n" |
| "str q17, [%[c_ptr], #64]\n" |
| "fmla v18.4s, %[b1].4s, %[a0a].s[2]\n" |
| "str q25, [%[c_ptr], #80]\n" |
| "fmla v26.4s, %[b2].4s, %[a0a].s[2]\n" |
| "str q10, [%[c_ptr], #96]\n" |
| |
| "fmla v11.4s, %[b0].4s, %[a0a].s[3]\n" |
| "str q18, [%[c_ptr], #112]\n" |
| "fmla v19.4s, %[b1].4s, %[a0a].s[3]\n" |
| "str q26, [%[c_ptr], #128]\n" |
| "fmla v27.4s, %[b2].4s, %[a0a].s[3]\n" |
| "str q11, [%[c_ptr], #144]\n" |
| |
| "fmla v12.4s, %[b0].4s, %[a1a].s[0]\n" |
| "str q19, [%[c_ptr], #160]\n" |
| "fmla v20.4s, %[b1].4s, %[a1a].s[0]\n" |
| "str q27, [%[c_ptr], #176]\n" |
| "fmla v28.4s, %[b2].4s, %[a1a].s[0]\n" |
| "str q12, [%[c_ptr], #192]\n" |
| |
| "fmla v13.4s, %[b0].4s, %[a1a].s[1]\n" |
| "str q20, [%[c_ptr], #208]\n" |
| "fmla v21.4s, %[b1].4s, %[a1a].s[1]\n" |
| "str q28, [%[c_ptr], #224]\n" |
| "fmla v29.4s, %[b2].4s, %[a1a].s[1]\n" |
| "str q13, [%[c_ptr], #240]\n" |
| |
| "fmla v14.4s, %[b0].4s, %[a1a].s[2]\n" |
| "str q21, [%[c_ptr], #256]\n" |
| "fmla v22.4s, %[b1].4s, %[a1a].s[2]\n" |
| "str q29, [%[c_ptr], #272]\n" |
| "fmla v30.4s, %[b2].4s, %[a1a].s[2]\n" |
| "str q14, [%[c_ptr], #288]\n" |
| |
| "fmla v15.4s, %[b0].4s, %[a1a].s[3]\n" |
| "str q22, [%[c_ptr], #304]\n" |
| "fmla v23.4s, %[b1].4s, %[a1a].s[3]\n" |
| "str q30, [%[c_ptr], #320]\n" |
| "fmla v31.4s, %[b2].4s, %[a1a].s[3]\n" |
| "str q15, [%[c_ptr], #336]\n" |
| |
| "b 3f\n" |
| |
| // Detached final iteration (odd K) |
| "2:\n" |
| "fmla v8.4s , %[b0].4s, %[a0].s[0]\n" |
| "ldr %q[b2], [%[b_ptr], #32]\n" |
| "fmla v16.4s, %[b1].4s, %[a0].s[0]\n" |
| "fmla v9.4s , %[b0].4s, %[a0].s[1]\n" |
| "str q8, [%[c_ptr], #0]\n" |
| "fmla v17.4s, %[b1].4s, %[a0].s[1]\n" |
| "str q16, [%[c_ptr], #16]\n" |
| "fmla v24.4s, %[b2].4s, %[a0].s[0]\n" |
| "add %[b_ptr], %[b_ptr], #48\n" |
| "add %[a_ptr], %[a_ptr], #32\n" |
| "str q24, [%[c_ptr], #32]\n" |
| "fmla v25.4s, %[b2].4s, %[a0].s[1]\n" |
| "str q9, [%[c_ptr], #48]\n" |
| |
| "fmla v10.4s, %[b0].4s, %[a0].s[2]\n" |
| "str q17, [%[c_ptr], #64]\n" |
| "fmla v18.4s, %[b1].4s, %[a0].s[2]\n" |
| "str q25, [%[c_ptr], #80]\n" |
| "fmla v26.4s, %[b2].4s, %[a0].s[2]\n" |
| "str q10, [%[c_ptr], #96]\n" |
| |
| "fmla v11.4s, %[b0].4s, %[a0].s[3]\n" |
| "str q18, [%[c_ptr], #112]\n" |
| "fmla v19.4s, %[b1].4s, %[a0].s[3]\n" |
| "str q26, [%[c_ptr], #128]\n" |
| "fmla v27.4s, %[b2].4s, %[a0].s[3]\n" |
| "str q11, [%[c_ptr], #144]\n" |
| |
| "fmla v12.4s, %[b0].4s, %[a1].s[0]\n" |
| "str q19, [%[c_ptr], #160]\n" |
| "fmla v20.4s, %[b1].4s, %[a1].s[0]\n" |
| "str q27, [%[c_ptr], #176]\n" |
| "fmla v28.4s, %[b2].4s, %[a1].s[0]\n" |
| "str q12, [%[c_ptr], #192]\n" |
| |
| "fmla v13.4s, %[b0].4s, %[a1].s[1]\n" |
| "str q20, [%[c_ptr], #208]\n" |
| "fmla v21.4s, %[b1].4s, %[a1].s[1]\n" |
| "str q28, [%[c_ptr], #224]\n" |
| "fmla v29.4s, %[b2].4s, %[a1].s[1]\n" |
| "str q13, [%[c_ptr], #240]\n" |
| |
| "fmla v14.4s, %[b0].4s, %[a1].s[2]\n" |
| "str q21, [%[c_ptr], #256]\n" |
| "fmla v22.4s, %[b1].4s, %[a1].s[2]\n" |
| "str q29, [%[c_ptr], #272]\n" |
| "fmla v30.4s, %[b2].4s, %[a1].s[2]\n" |
| "str q14, [%[c_ptr], #288]\n" |
| |
| "fmla v15.4s, %[b0].4s, %[a1].s[3]\n" |
| "str q22, [%[c_ptr], #304]\n" |
| "fmla v23.4s, %[b1].4s, %[a1].s[3]\n" |
| "str q30, [%[c_ptr], #320]\n" |
| "fmla v31.4s, %[b2].4s, %[a1].s[3]\n" |
| "str q15, [%[c_ptr], #336]\n" |
| |
| // Common tail |
| "3:\n" |
| "str q23, [%[c_ptr], #352]\n" |
| "str q31, [%[c_ptr], #368]\n" |
| "add %[c_ptr], %[c_ptr], #384\n" |
| : |
| [a_ptr] "+r" (a_ptr), [b_ptr] "+r" (b_ptr), [c_ptr] "+r" (c_ptr), |
| [a0] "+w" (a0), [a1] "+w" (a1), [a0a] "+w" (a0a), [a1a] "+w" (a1a), |
| [b0] "+w" (b0), [b1] "+w" (b1), [b2] "+w" (b2), [k] "+r" (k) |
| : [oddk] "r" (oddk) |
| : "x20", "x21", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", |
| "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "cc" |
| ); |
| } |
| } |
| } |
| |
| } // namespace arm_gemm |
| |
| #endif |
