SKIP: FAILED

RWByteAddressBuffer prevent_dce : register(u0);

float subgroupShuffleDown_7f8886() {
  float res = WaveReadLaneAt(1.0f, (WaveGetLaneIndex() + 1u));
  return res;
}

void fragment_main() {
  prevent_dce.Store(0u, asuint(subgroupShuffleDown_7f8886()));
  return;
}

[numthreads(1, 1, 1)]
void compute_main() {
  prevent_dce.Store(0u, asuint(subgroupShuffleDown_7f8886()));
  return;
}
FXC validation failure:
<scrubbed_path>(4,37-54): error X3004: undeclared identifier 'WaveGetLaneIndex'