| // Auto-generated file. Do not edit! |
| // Template: src/qs8-f32-vcvt/wasmsimd.c.in |
| // Generator: tools/xngen |
| // |
| // 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 <assert.h> |
| |
| #include <wasm_simd128.h> |
| |
| #include <xnnpack/common.h> |
| #include <xnnpack/intrinsics-polyfill.h> |
| #include <xnnpack/vcvt.h> |
| |
| |
| void xnn_qu8_f32_vcvt_ukernel__wasmsimd_x8( |
| size_t n, |
| const uint8_t* x, |
| float* y, |
| const union xnn_qu8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN |
| { |
| assert(n != 0); |
| assert(n % sizeof(uint8_t) == 0); |
| assert(x != NULL); |
| assert(y != NULL); |
| |
| const v128_t vminus_zero_point = wasm_v128_load64_splat(params->wasmsimd.minus_zero_point); |
| const v128_t vscale = wasm_v128_load64_splat(params->wasmsimd.scale); |
| for (; n >= 8 * sizeof(uint8_t); n -= 8 * sizeof(uint8_t)) { |
| v128_t vx = wasm_u16x8_load8x8(x); |
| vx = wasm_i16x8_add(vx, vminus_zero_point); |
| x += 8; |
| |
| v128_t vy_lo = wasm_i32x4_extend_low_i16x8(vx); |
| v128_t vy_hi = wasm_i32x4_extend_high_i16x8(vx); |
| |
| vy_lo = wasm_f32x4_convert_i32x4(vy_lo); |
| vy_hi = wasm_f32x4_convert_i32x4(vy_hi); |
| |
| vy_lo = wasm_f32x4_mul(vy_lo, vscale); |
| vy_hi = wasm_f32x4_mul(vy_hi, vscale); |
| |
| wasm_v128_store(y, vy_lo); |
| wasm_v128_store(y + 4, vy_hi); |
| y += 8; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| assert(n >= 1 * sizeof(uint8_t)); |
| assert(n <= 7 * sizeof(uint8_t)); |
| |
| v128_t vx = wasm_u16x8_load8x8(x); |
| vx = wasm_i16x8_add(vx, vminus_zero_point); |
| x += 8; |
| |
| v128_t vy = wasm_i32x4_extend_low_i16x8(vx); |
| vy = wasm_f32x4_convert_i32x4(vy); |
| vy = wasm_f32x4_mul(vy, vscale); |
| |
| if (n & (4 * sizeof(uint8_t))) { |
| wasm_v128_store(y, vy); y += 4; |
| vy = wasm_i32x4_extend_high_i16x8(vx); |
| vy = wasm_f32x4_convert_i32x4(vy); |
| vy = wasm_f32x4_mul(vy, vscale); |
| } |
| if (n & (2 * sizeof(uint8_t))) { |
| *((double*) y) = wasm_f64x2_extract_lane(vy, 0); |
| vy = wasm_v64x2_shuffle(vy, vy, 1, 1); |
| y += 2; |
| } |
| if (n & (1 * sizeof(uint8_t))) { |
| *y = wasm_f32x4_extract_lane(vy, 0); |
| } |
| } |
| } |