code: def backend_compile(
      backend: xc.Client,
      module: ir.Module,
      options: xc.CompileOptions,
      host_callbacks: Sequence[Any],
  ) -> xc.LoadedExecutable:
      # Convert ir.Module to a string representation, unless the
      # back-end expliclity flags the ability to handle a module directly
      # (avoiding the overhead of back and forth conversions)
      if getattr(backend, "needs_str_ir", True):
          built_c = mlir.module_to_bytecode(module)
      else:
          built_c = module
  
      # we use a separate function call to ensure that XLA compilation appears
      # separately in Python profiling results
      if host_callbacks:
          return backend.compile(
              built_c,
              compile_options=options,
              host_callbacks=host_callbacks,
          )
      # Some backends don't have `host_callbacks` option yet
      # TODO(sharadmv): remove this fallback when all backends allow `compile`
      # to take in `host_callbacks`
      return backend.compile(built_c, compile_options=options)
  
imports: from __future__ import annotations
  from collections.abc import Sequence
  import time
  from typing import Any
  import logging
  import warnings
  import numpy
  from jax._src import lib
  from jax._src import distributed
  from jax._src import compilation_cache
  from jax._src import config
  from jax._src.xla_bridge import process_count
  from jax._src import monitoring
  from jax._src import profiler
  from jax._src import traceback_util
  from jax._src.interpreters import mlir
  from jax._src.lib import xla_extension_version
  from jax._src.lib.mlir import ir
  from jax._src.lib import xla_client
label_desc: Use image node_id 5 for calling a global function with example usage: backend_compile(backend, module, options, host_callbacks) and returns: backend, backend