remove unneeded function

gcc/config/arm/thumb.c

@@ -75,30 +75,6 @@ thumb_shiftable_const(HOST_WIDE_INT val)
     return 0;
 }
 
-int
-thumb_trivial_epilogue()
-{
-    int regno;
-
-    /* ??? If this function ever returns 1, we get a function without any
-       epilogue at all.  It appears that the intent was to cause a "return"
-       insn to be emitted, but that does not happen.  */
-    return 0;
-
-#if 0
-    if (get_frame_size()
-        || current_function_outgoing_args_size
-        || current_function_pretend_args_size)
-        return 0;
-
-    for (regno = 8; regno < 13; regno++)
-        if (regs_ever_live[regno] && !call_used_regs[regno])
-            return 0;
-
-    return 1;
-#endif
-}
-
 /* Routines for handling the constant pool */
 /* This is unashamedly hacked from the version in sh.c, since the problem is
    extremely similar.  */

gcc/config/arm/thumb.h

@@ -1148,12 +1148,8 @@ int thumb_shiftable_const ();
    limited PC addressing range: */
 #define MACHINE_DEPENDENT_REORG(INSN) thumb_reorg ((INSN))
 
-
-/* Options specific to Thumb */
-
 /* True if a return instruction can be used in this function. */
-int thumb_trivial_epilogue ();
-#define USE_RETURN (reload_completed && thumb_trivial_epilogue ())
+#define USE_RETURN reload_completed
 
 extern char * thumb_unexpanded_epilogue ();
 extern char * output_move_mem_multiple ();