SKIP: FAILED

RWByteAddressBuffer prevent_dce : register(u0);

float3 subgroupBroadcastFirst_5c6962() {
  float3 res = WaveReadLaneFirst((1.0f).xxx);
  return res;
}

void fragment_main() {
  prevent_dce.Store3(0u, asuint(subgroupBroadcastFirst_5c6962()));
  return;
}

[numthreads(1, 1, 1)]
void compute_main() {
  prevent_dce.Store3(0u, asuint(subgroupBroadcastFirst_5c6962()));
  return;
}
FXC validation failure:
<scrubbed_path>(4,16-44): error X3004: undeclared identifier 'WaveReadLaneFirst'