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Remove last remnants of requantize kernels #13749

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Remove last remnants of requantize kernels #13749

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82 changes: 0 additions & 82 deletions backends/cadence/hifi/kernels/kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -127,60 +127,6 @@ void dequantize(
}
}

// Requantize the int8_t/uint8_t in value to a uint8_t/int8_t out value.
// The scale and zero_point for requantization are in the args.
template <typename IT, typename OT>
__attribute__((always_inline)) OT requantize(
const IT in,
float in_scale,
int32_t in_zero_point,
float inv_out_scale,
int32_t out_zero_point) {
float dequant = dequantize<IT>(in, in_scale, in_zero_point);
return quantize<OT>(dequant, inv_out_scale, out_zero_point);
}

// Requantize the int8_t/uint8_t in array to a uint8_t/int8_t out array.
// The scale and zero_point for requantization are in the args.
template <typename IT, typename OT>
void requantize(
OT* __restrict__ out,
const IT* __restrict__ in,
float in_scale,
int32_t in_zero_point,
float inv_out_scale,
int32_t out_zero_point,
size_t size) {
xtfloatx2 in_scale_vec = (xtfloatx2)in_scale;
xtfloatx2 in_zero_vec = XT_FLOAT_SX2(in_zero_point, 0);
xtfloatx2 inv_out_scale_vec = (xtfloatx2)inv_out_scale;
xtfloatx2 out_zero_vec = XT_FLOAT_SX2(out_zero_point, 0);

float min_val = std::numeric_limits<OT>::min();
float max_val = std::numeric_limits<OT>::max();

size_t i = 0;
// Vectorize by 2
for (; i < (size & ~1); i += 2) {
xtfloatx2 in_vec = {(float)in[i], (float)in[i + 1]};
xtfloatx2 t0 = XT_SUB_SX2(in_vec, in_zero_vec);
xtfloatx2 t1 = XT_MUL_SX2(t0, in_scale_vec);

xtfloatx2 acc = out_zero_vec;
XT_MADD_SX2(acc, inv_out_scale_vec, t1);
xtfloatx2 t2 = XT_FIROUND_SX2(acc);
ae_int32x2 t3 =
XT_UTRUNC_SX2(XT_MAX_SX2(XT_MIN_SX2(t2, max_val), min_val), 0);
out[i] = AE_MOVAD32_H(t3);
out[i + 1] = AE_MOVAD32_L(t3);
}
// Handle residual iteration
if (i < size) {
out[i] = requantize<IT, OT>(
in[i], in_scale, in_zero_point, inv_out_scale, out_zero_point);
}
}

// explicit template instantiation

#define typed_quantize_val(dtype) \
Expand Down Expand Up @@ -229,34 +175,6 @@ typed_dequantize_vec(uint16_t);
typed_dequantize_vec(int32_t);
#undef typed_dequantize_vec

#define typed_requantize_val(itype, otype) \
template __attribute__((always_inline)) otype requantize( \
const itype in, \
float in_scale, \
int32_t in_zero_point, \
float inv_out_scale, \
int32_t out_zero_point);
typed_requantize_val(int8_t, int8_t);
typed_requantize_val(uint8_t, uint8_t);
typed_requantize_val(int8_t, uint8_t);
typed_requantize_val(uint8_t, int8_t);
#undef typed_requantize_val

#define typed_requantize_vec(itype, otype) \
template void requantize( \
otype* __restrict__ out, \
const itype* __restrict__ in, \
float in_scale, \
int32_t in_zero_point, \
float inv_out_scale, \
int32_t out_zero_point, \
size_t size);
typed_requantize_vec(int8_t, int8_t);
typed_requantize_vec(uint8_t, uint8_t);
typed_requantize_vec(int8_t, uint8_t);
typed_requantize_vec(uint8_t, int8_t);
#undef typed_requantize_vec

}; // namespace kernels
}; // namespace HiFi
}; // namespace impl
Expand Down
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