message: Optimize CascadedBiQuadFilter.
  Unloading states and coefficients to local variables avoids excessive memory access when building with "-fno-strict-aliasing".
  Cr-Commit-Position: refs/heads/main@{#35518}
diff: @@ -99,19 +99,28 @@ void CascadedBiQuadFilter::ApplyBiQuad(rtc::ArrayView<const float> x,
  rtc::ArrayView<float> y,
  CascadedBiQuadFilter::BiQuad* biquad) {
  RTC_DCHECK_EQ(x.size(), y.size());
  - const auto* c_b = biquad->coefficients.b;
  - const auto* c_a = biquad->coefficients.a;
  - auto* m_x = biquad->x;
  - auto* m_y = biquad->y;
  + const float c_a_0 = biquad->coefficients.a[0];
  + const float c_a_1 = biquad->coefficients.a[1];
  + const float c_b_0 = biquad->coefficients.b[0];
  + const float c_b_1 = biquad->coefficients.b[1];
  + const float c_b_2 = biquad->coefficients.b[2];
  + float m_x_0 = biquad->x[0];
  + float m_x_1 = biquad->x[1];
  + float m_y_0 = biquad->y[0];
  + float m_y_1 = biquad->y[1];
  for (size_t k = 0; k < x.size(); ++k) {
  const float tmp = x[k];
  - y[k] = c_b[0] * tmp + c_b[1] * m_x[0] + c_b[2] * m_x[1] - c_a[0] * m_y[0] -
  - c_a[1] * m_y[1];
  - m_x[1] = m_x[0];
  - m_x[0] = tmp;
  - m_y[1] = m_y[0];
  - m_y[0] = y[k];
  + y[k] = c_b_0 * tmp + c_b_1 * m_x_0 + c_b_2 * m_x_1 - c_a_0 * m_y_0 -
  + c_a_1 * m_y_1;
  + m_x_1 = m_x_0;
  + m_x_0 = tmp;
  + m_y_1 = m_y_0;
  + m_y_0 = y[k];
  }
  + biquad->x[0] = m_x_0;
  + biquad->x[1] = m_x_1;
  + biquad->y[0] = m_y_0;
  + biquad->y[1] = m_y_1;
  }
  } // namespace webrtc
  