namespace tensorflow {

const char* const kXlaCompiledKernelAttr = "_XlaCompiledKernel";
const char* const kXlaNumConstantArgsAttr = "_XlaNumConstantArgs";
const char* const kXlaNumResourceArgsAttr = "_XlaNumResourceArgs";
const char* const kXlaHostTransferSequencerAttr =
    "_xla_host_transfer_sequencer";
const char* const kXlaHasReferenceVarsAttr = "_XlaHasReferenceVars";

namespace {

bool AreAllParentsGuaranteedConst(