blob: 6fd92e2fdd313c72fd03c97aaf6c799b9a9db1e2 [file] [log] [blame]
// Copyright 2020 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.
$assert BATCH_TILE % 4 == 0
$assert BATCH_TILE >= 4
$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#include <assert.h>
#include <arm_neon.h>
#include <xnnpack/common.h>
#include <xnnpack/math.h>
#include <xnnpack/vunary.h>
void xnn_f32_vrndd_ukernel__neon_x${BATCH_TILE}(
size_t n,
const float* x,
float* y,
const union xnn_f32_rnd_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
{
assert(n != 0);
assert(n % sizeof(float) == 0);
const float32x4_t vintegral_threshold = vreinterpretq_f32_u32(vmovq_n_u32(UINT32_C(0x4B000000)));
const uint32x4_t vone = vreinterpretq_u32_f32(vmovq_n_f32(1.0f));
for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) {
$for N in range(0, BATCH_TILE, 4):
const float32x4_t vx${ABC[N:N+4]} = vld1q_f32(x); x += 4;
$for N in range(0, BATCH_TILE, 4):
const int32x4_t vintx${ABC[N:N+4]} = vcvtq_s32_f32(vx${ABC[N:N+4]});
$for N in range(0, BATCH_TILE, 4):
uint32x4_t vrndmask${ABC[N:N+4]} = vcaltq_f32(vx${ABC[N:N+4]}, vintegral_threshold);
$for N in range(0, BATCH_TILE, 4):
const float32x4_t vprerndx${ABC[N:N+4]} = vcvtq_f32_s32(vintx${ABC[N:N+4]});
$for N in range(0, BATCH_TILE, 4):
vrndmask${ABC[N:N+4]} = vbicq_u32(vrndmask${ABC[N:N+4]}, vmovq_n_u32(UINT32_C(0x80000000)));
$for N in range(0, BATCH_TILE, 4):
const float32x4_t vrndx${ABC[N:N+4]} = vbslq_f32(vrndmask${ABC[N:N+4]}, vprerndx${ABC[N:N+4]}, vx${ABC[N:N+4]});
$for N in range(0, BATCH_TILE, 4):
const uint32x4_t vadjmask${ABC[N:N+4]} = vcgtq_f32(vrndx${ABC[N:N+4]}, vx${ABC[N:N+4]});
$for N in range(0, BATCH_TILE, 4):
const float32x4_t vadjrndx${ABC[N:N+4]} = vreinterpretq_f32_u32(vandq_u32(vadjmask${ABC[N:N+4]}, vone));
$for N in range(0, BATCH_TILE, 4):
const float32x4_t vy${ABC[N:N+4]} = vsubq_f32(vrndx${ABC[N:N+4]}, vadjrndx${ABC[N:N+4]});
$for N in range(0, BATCH_TILE, 4):
vst1q_f32(y, vy${ABC[N:N+4]}); y += 4;
}
$if BATCH_TILE > 4:
for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
const float32x4_t vx = vld1q_f32(x); x += 4;
const int32x4_t vintx = vcvtq_s32_f32(vx);
uint32x4_t vrndmask = vcaltq_f32(vx, vintegral_threshold);
const float32x4_t vprerndx = vcvtq_f32_s32(vintx);
vrndmask = vbicq_u32(vrndmask, vmovq_n_u32(UINT32_C(0x80000000)));
const float32x4_t vrndx = vbslq_f32(vrndmask, vprerndx, vx);
const uint32x4_t vadjmask = vcgtq_f32(vrndx, vx);
const float32x4_t vadjrndx = vreinterpretq_f32_u32(vandq_u32(vadjmask, vone));
const float32x4_t vy = vsubq_f32(vrndx, vadjrndx);
vst1q_f32(y, vy); y += 4;
}
if XNN_UNLIKELY(n != 0) {
const float32x4_t vx = vld1q_f32(x);
const int32x4_t vintx = vcvtq_s32_f32(vx);
uint32x4_t vrndmask = vcaltq_f32(vx, vintegral_threshold);
const float32x4_t vprerndx = vcvtq_f32_s32(vintx);
vrndmask = vbicq_u32(vrndmask, vmovq_n_u32(UINT32_C(0x80000000)));
const float32x4_t vrndx = vbslq_f32(vrndmask, vprerndx, vx);
const uint32x4_t vadjmask = vcgtq_f32(vrndx, vx);
const float32x4_t vadjrndx = vreinterpretq_f32_u32(vandq_u32(vadjmask, vone));
const float32x4_t vy = vsubq_f32(vrndx, vadjrndx);
float32x2_t vy_lo = vget_low_f32(vy);
if (n & (2 * sizeof(float))) {
vst1_f32(y, vy_lo); y += 2;
vy_lo = vget_high_f32(vy);
}
if (n & (1 * sizeof(float))) {
vst1_lane_f32(y, vy_lo, 0);
}
}
}