tree 87950d618ef161a7779a6fe837652c80cc546e28
parent af89b290e3234b10e0c73b2b18c4d11b46c25547
author James Zern <jzern@google.com> 1671246272 -0800
committer James Zern <jzern@google.com> 1671300970 -0800

av1_fwd_txfm2d_neon: fix -Wmaybe-uninitialized warnings

with some versions of gcc (observed with gcc 12.2.0 and 10.x under some
conditions).

fixes warnings of the form:
av1/encoder/arm/neon/av1_fwd_txfm2d_neon.c:292:14: warning: 'buf0' may
be used uninitialized in this function [-Wmaybe-uninitialized]
  out[i] = vreinterpretq_s16_u64(vld1q_lane_u64(
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      (uint64_t *)(in + i * stride), vreinterpretq_u64_s16(out[i]), 0));
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This uses vld1q_dup_u64 rather than vld1q_lane_u64. This is safe because
the upper lane is unused after the load.

Change-Id: Ia15d4ea54e3a5a92a738bfb7bfe3bf5de1d6c974