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// Copyright 2019 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 CHANNEL_TILE >= 1
$assert KERNEL_TILE >= 2
$assert ACCUMULATORS >= 1
$assert ACTIVATION in ["LINEAR", "MINMAX"]
$assert ACTIVATION != "LINEAR" or not WASM
$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#include <assert.h>
#include <xnnpack/dwconv.h>
#include <xnnpack/math.h>
$MIN_F32 = "__builtin_wasm_min_f32" if WASM else "math_min_f32"
$MAX_F32 = "__builtin_wasm_max_f32" if WASM else "math_max_f32"
$SUFFIX = {"LINEAR": "", "MINMAX": "_minmax"}[ACTIVATION]
$PARAMS = {"LINEAR": "xnn_f32_default_params", "MINMAX": "xnn_f32_minmax_params"}[ACTIVATION]
void xnn_f32_dwconv${SUFFIX}_ukernel_${KERNEL_TILE}p${CHANNEL_TILE}c__${"wasm" if WASM else "scalar"}${"" if ACCUMULATORS == 1 else "_acc%d" % ACCUMULATORS}(
size_t channels,
size_t output_width,
const float** input,
const float* weights,
float* output,
intptr_t input_stride,
size_t output_increment,
size_t input_offset,
const float* zero,
const union ${PARAMS} params[restrict XNN_MIN_ELEMENTS(1)])
{
assert(channels != 0);
assert(output_width != 0);
$if ACTIVATION == "MINMAX":
const float vmin = params->scalar.min;
const float vmax = params->scalar.max;
do {
$for K in range(KERNEL_TILE):
const float* i${K} = input[${K}];
assert(i${K} != NULL);
if XNN_UNPREDICTABLE(i${K} != zero) {
i${K} = (const float*) ((uintptr_t) i${K} + input_offset);
}
input = (const float**) ((uintptr_t) input + input_stride);
size_t c = channels;
const float* w = weights;
$if CHANNEL_TILE > 1:
for (; c >= ${CHANNEL_TILE}; c -= ${CHANNEL_TILE}) {
$for C in range(CHANNEL_TILE):
float vacc${C}p0 = w[${C}];
$for K in range(KERNEL_TILE):
$for C in range(CHANNEL_TILE):
const float vi${K}x${C} = i${K}[${C}];
i${K} += ${CHANNEL_TILE};
$for C in range(CHANNEL_TILE):
const float vk${K}x${C} = w[${(K + 1) * CHANNEL_TILE + C}];
$if 1 <= K < ACCUMULATORS:
float vacc${C}p${K} = vi${K}x${C} * vk${K}x${C};
$else:
vacc${C}p${K % ACCUMULATORS} = math_muladd_f32(vi${K}x${C}, vk${K}x${C}, vacc${C}p${K % ACCUMULATORS});
w += ${(KERNEL_TILE + 1) * CHANNEL_TILE};
$if ACCUMULATORS > 1:
// Add up all accumulators to vacc${ABC[0:CHANNEL_TILE]}p0
$ACC_SLICE = 1
$while ACC_SLICE < ACCUMULATORS:
$for A in range(0, ACCUMULATORS, ACC_SLICE * 2):
$if A + ACC_SLICE < ACCUMULATORS:
$for C in range(CHANNEL_TILE):
vacc${C}p${A} = vacc${C}p${A} + vacc${C}p${A + ACC_SLICE};
$ACC_SLICE *= 2
$if ACTIVATION == "MINMAX":
$for C in range(CHANNEL_TILE):
float vacc${C} = ${MAX_F32}(vacc${C}p0, vmin);
$for C in range(CHANNEL_TILE):
vacc${C} = ${MIN_F32}(vacc${C}, vmax);
$for C in range(CHANNEL_TILE):
output[${C}] = vacc${C};
$else:
$for C in range(CHANNEL_TILE):
output[${C}] = vacc${C}p0;
output += ${CHANNEL_TILE};
}
for (; c >= 1; c -= 1) {
float vacc0p0 = *w++;
$for K in range(KERNEL_TILE):
const float vi${K} = *i${K}++;
const float vk${K} = w[${(K + 1) * CHANNEL_TILE - 1}];
$if 1 <= K < ACCUMULATORS:
float vacc0p${K} = vi${K} * vk${K};
$else:
vacc0p${K % ACCUMULATORS} = math_muladd_f32(vi${K}, vk${K}, vacc0p${K % ACCUMULATORS});
$if ACCUMULATORS > 1:
// Add up all accumulators to vacc${ABC[0:CHANNEL_TILE]}p0
$ACC_SLICE = 1
$while ACC_SLICE < ACCUMULATORS:
$for A in range(0, ACCUMULATORS, ACC_SLICE * 2):
$if A + ACC_SLICE < ACCUMULATORS:
vacc0p${A} = vacc0p${A} + vacc0p${A + ACC_SLICE};
$ACC_SLICE *= 2
$if ACTIVATION == "MINMAX":
float vacc0 = ${MAX_F32}(vacc0p0, vmin);
vacc0 = ${MIN_F32}(vacc0, vmax);
*output++ = vacc0;
$else:
*output++ = vacc0p0;
}
$else:
do {
float vacc0p0 = w[0];
$for K in range(KERNEL_TILE):
const float vi${K} = *i${K}++;
const float vk${K} = w[${K+1}];
$if 1 <= K < ACCUMULATORS:
float vacc0p${K} = vi${K} * vk${K};
$else:
vacc0p${K % ACCUMULATORS} = math_muladd_f32(vi${K}, vk${K}, vacc0p${K % ACCUMULATORS});
w += ${KERNEL_TILE + 1};
$ACC_STEP = 1
$while ACC_STEP < ACCUMULATORS:
$for A in range(0, ACCUMULATORS, ACC_STEP * 2):
$if A + ACC_STEP < ACCUMULATORS:
vacc0p${A} += vacc0p${A + ACC_STEP};
$ACC_STEP *= 2
$if ACTIVATION == "MINMAX":
float vacc0 = ${MAX_F32}(vacc0p0, vmin);
vacc0 = ${MIN_F32}(vacc0, vmax);
*output++ = vacc0;
$else:
*output++ = vacc0p0;
} while (--c != 0);
output = (float*) ((uintptr_t) output + output_increment);
} while (--output_width != 0);
}
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