arm.c (return_used_this_function): Remove.

arm.c (return_used_this_function): Remove.

2009-04-13  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

       * config/arm/arm.c (return_used_this_function): Remove.
       (arm_output_function_prologue): Remove use of
	return_used_this_function.
       (output_return_instruction): Replace use of
	return_used_this_function
	by cfun->machine->return_used_this_function.
       (arm_output_epilogue): Likewise.
       (arm_output_function_epilogue): Likewise.
       (thumb_unexpanded_epilogue): Likewise.
       * config/arm/arm.h (struct machine_function):
	New member return_used_this_function.

From-SVN: r145997