test / src /f16-gemm /neonfp16arith-ld64.c.in
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// 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 NR % 8 == 0
$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#include <assert.h>
#include <arm_neon.h>
#include <xnnpack/common.h>
#include <xnnpack/gemm.h>
#include <xnnpack/intrinsics-polyfill.h>
void xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_${MR}x${NR}__neonfp16arith_ld64(
size_t mr,
size_t nc,
size_t kc,
const void* restrict a,
size_t a_stride,
const void* restrict w,
void* restrict c,
size_t cm_stride,
size_t cn_stride,
$if INC:
const void* restrict acc,
const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
{
assert(mr != 0);
assert(mr <= ${MR});
assert(nc != 0);
assert(kc != 0);
assert(kc % sizeof(uint16_t) == 0);
assert(a != NULL);
assert(w != NULL);
assert(c != NULL);
$if INC:
assert(acc != NULL);
const uint16_t* a0 = (const uint16_t*) a;
uint16_t* c0 = (uint16_t*) c;
$for M in range(1, MR):
const uint16_t* a${M} = (const uint16_t*) ((uintptr_t) a${M-1} + a_stride);
uint16_t* c${M} = (uint16_t*) ((uintptr_t) c${M-1} + cm_stride);
$if M % 2 == 0:
if XNN_UNPREDICTABLE(mr <= ${M}) {
a${M} = a${M-1};
c${M} = c${M-1};
}
$elif M + 1 == MR:
if XNN_UNPREDICTABLE(mr != ${M+1}) {
a${M} = a${M-1};
c${M} = c${M-1};
}
$else:
if XNN_UNPREDICTABLE(mr < ${M+1}) {
a${M} = a${M-1};
c${M} = c${M-1};
}
do {
$if INC:
$for M in range(MR):
$for N in range(0, NR, 8):
float16x8_t vacc${M}x${ABC[N:N+8]} = vreinterpretq_f16_u16(vld1q_u16(acc)); acc = (const void*) ((uintptr_t) acc + sizeof(float16x8_t));
$else:
$for N in range(0, NR, 8):
float16x8_t vacc0x${ABC[N:N+8]} = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));
$for M in range(1, MR):
$for N in range(0, NR, 8):
float16x8_t vacc${M}x${ABC[N:N+8]} = vacc0x${ABC[N:N+8]};
size_t k = kc;
while (k >= 4 * sizeof(uint16_t)) {
$for M in range(MR):
const float16x4_t va${M} = vreinterpret_f16_u16(vld1_u16(a${M})); a${M} += 4;
$for L in range(4):
$for N in range(0, NR, 8):
const float16x8_t vb${ABC[N:N+8]}c${L} = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));
#if XNN_ARCH_ARM64
$for N in range(0, NR, 8):
$for M in range(MR):
vacc${M}x${ABC[N:N+8]} = vfmaq_lane_f16(vacc${M}x${ABC[N:N+8]}, vb${ABC[N:N+8]}c${L}, va${M}, ${L});
#else
$for N in range(0, NR, 8):
$for M in range(MR):
vacc${M}x${ABC[N:N+8]} = vmlaq_lane_f16(vacc${M}x${ABC[N:N+8]}, vb${ABC[N:N+8]}c${L}, va${M}, ${L});
#endif
k -= 4 * sizeof(uint16_t);
}
if XNN_UNLIKELY(k != 0) {
do {
$for M in range(MR):
const float16x8_t va${M} = vreinterpretq_f16_u16(vld1q_dup_u16(a${M})); a${M} += 1;
$for N in range(0, NR, 8):
const float16x8_t vb${ABC[N:N+8]} = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));
$for N in range(0, NR, 8):
$for M in range(MR):
vacc${M}x${ABC[N:N+8]} = vfmaq_f16(vacc${M}x${ABC[N:N+8]}, va${M}, vb${ABC[N:N+8]});
k -= sizeof(uint16_t);
} while (k != 0);
}
const float16x8_t vmin = vreinterpretq_f16_u16(vld1q_dup_u16(&params->fp16arith.min));
$for N in range(0, NR, 8):
$for M in range(MR):
vacc${M}x${ABC[N:N+8]} = vmaxq_f16(vacc${M}x${ABC[N:N+8]}, vmin);
const float16x8_t vmax = vreinterpretq_f16_u16(vld1q_dup_u16(&params->fp16arith.max));
$for N in range(0, NR, 8):
$for M in range(MR):
vacc${M}x${ABC[N:N+8]} = vminq_f16(vacc${M}x${ABC[N:N+8]}, vmax);
if XNN_LIKELY(nc >= ${NR}) {
$for M in range(MR):
vst1q_u16(c${M}, vreinterpretq_u16_f16(vacc${M}x${ABC[0:8]}));
$for N in range(8, NR, 8):
vst1q_u16(c${M} + ${N}, vreinterpretq_u16_f16(vacc${M}x${ABC[N:N+8]}));
c${M} = (uint16_t*) ((uintptr_t) c${M} + cn_stride);
$for M in range(MR):
a${M} = (const uint16_t*) ((uintptr_t) a${M} - kc);
nc -= ${NR};
} else {
$for LOG2N in reversed(range(NR.bit_length())):
$if NR != 1 << LOG2N:
if (nc & ${1 << LOG2N}) {
$if LOG2N >= 3:
$for N in range(0, 1 << LOG2N, 8):
$for M in range(MR):
vst1q_u16(c${M}, vreinterpretq_u16_f16(vacc${M}x${ABC[N:N+8]})); c${M} += 8;
$for M in range(MR):
$for N in range(0, NR - (1 << LOG2N), 8):
vacc${M}x${ABC[N:N+8]} = vacc${M}x${ABC[N + (1 << LOG2N):N + (1 << LOG2N)+8]};
$elif LOG2N == 2:
$for M in range(MR):
vst1_u16(c${M}, vreinterpret_u16_f16(vacc${M}x${ABC[0:4]})); c${M} += 4;
$for M in range(MR):
vacc${M}x${ABC[0:4]} = vget_high_f16(vacc${M}x${ABC[0:8]});
$elif LOG2N == 1:
$for M in range(MR):
vst1_lane_u32((void*) c${M}, vreinterpret_u32_f16(vacc${M}x${ABC[0:4]}), 0); c${M} += 2;
$for M in range(MR):
vacc${M}x${ABC[0:4]} = vext_f16(vacc${M}x${ABC[0:4]}, vacc${M}x${ABC[0:4]}, 2);
$elif LOG2N == 0:
$for M in range(MR):
vst1_lane_u16(c${M}, vreinterpret_u16_f16(vacc${M}x${ABC[0:4]}), 0);
}
$if LOG2N == 3:
$for M in range(MR):
float16x4_t vacc${M}x${ABC[0:4]} = vget_low_f16(vacc${M}x${ABC[0:8]});
nc = 0;
}
} while (nc != 0);
}