Frank Barchard | fb158e2 | 2020-07-15 16:10:10 -0700 | [diff] [blame] | 1 | // Copyright 2020 Google LLC |
| 2 | // |
| 3 | // This source code is licensed under the BSD-style license found in the |
| 4 | // LICENSE file in the root directory of this source tree. |
| 5 | |
| 6 | $assert BATCH_TILE % 4 == 0 |
| 7 | $assert BATCH_TILE >= 4 |
| 8 | $ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| 9 | #include <assert.h> |
| 10 | |
| 11 | #include <wasm_simd128.h> |
| 12 | |
| 13 | #include <xnnpack/vunary.h> |
| 14 | #include <xnnpack/common.h> |
| 15 | |
| 16 | |
| 17 | void xnn_f32_relu_ukernel__wasmsimd_x${BATCH_TILE}( |
| 18 | size_t n, |
| 19 | const float* x, |
| 20 | float* y, |
| 21 | const union xnn_f32_relu_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN |
| 22 | { |
| 23 | assert(n != 0); |
| 24 | assert(n % sizeof(float) == 0); |
| 25 | assert(x != NULL); |
| 26 | assert(y != NULL); |
| 27 | |
| 28 | const v128_t vzero = wasm_f32x4_splat(0.0f); |
| 29 | |
| 30 | $if BATCH_TILE > 4: |
| 31 | for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) { |
| 32 | v128_t vacc${ABC[0:4]} = wasm_v128_load(x); |
| 33 | $for N in range(4, BATCH_TILE, 4): |
| 34 | v128_t vacc${ABC[N:N+4]} = wasm_v128_load(x + ${N}); |
| 35 | x += ${BATCH_TILE}; |
| 36 | |
| 37 | $for N in range(0, BATCH_TILE, 4): |
| 38 | vacc${ABC[N:N+4]} = wasm_i32x4_max(vacc${ABC[N:N+4]}, vzero); |
| 39 | |
| 40 | wasm_v128_store(y, vacc${ABC[0:4]}); |
| 41 | $for N in range(4, BATCH_TILE, 4): |
| 42 | wasm_v128_store(y + ${N}, vacc${ABC[N:N+4]}); |
| 43 | y += ${BATCH_TILE}; |
| 44 | } |
| 45 | for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { |
| 46 | v128_t vacc = wasm_v128_load(x); |
| 47 | x += 4; |
| 48 | |
| 49 | vacc = wasm_i32x4_max(vacc, vzero); |
| 50 | |
| 51 | wasm_v128_store(y, vacc); |
| 52 | y += 4; |
| 53 | } |
| 54 | if XNN_UNLIKELY(n != 0) { |
| 55 | v128_t vacc = wasm_v128_load(x); |
| 56 | |
| 57 | vacc = wasm_i32x4_max(vacc, vzero); |
| 58 | |
| 59 | if (n & (2 * sizeof(float))) { |
| 60 | *((double*) y) = wasm_f64x2_extract_lane(vacc, 0); |
| 61 | vacc = wasm_v32x4_shuffle(vacc, vacc, 2, 3, 2, 3); |
| 62 | y += 2; |
| 63 | } |
| 64 | if (n & (1 * sizeof(float))) { |
| 65 | *y = wasm_f32x4_extract_lane(vacc, 0); |
| 66 | } |
| 67 | } |
| 68 | } |