add default for EPILOGUE_USES

gcc/ChangeLog:

2015-04-27  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* defaults.h (EPILOGUE_USES): Add default definition of false.
	* df-scan.c (EPILOGUE_USES): Remove check if its undefined.
	* resource.c (init_resource_info): Likewise.

From-SVN: r222504

gcc/ChangeLog

 2015-04-27  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* defaults.h (EPILOGUE_USES): Add default definition of false.
+	* df-scan.c (EPILOGUE_USES): Remove check if its undefined.
+	* resource.c (init_resource_info): Likewise.
+
+2015-04-27  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
 	* defaults.h (PCC_BITFIELD_TYPE_MATTERS): Add default definition
 	to false.
 	* dwarf2out.c (field_byte_offset): REmove check if

gcc/defaults.h

@@ -1221,6 +1221,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #define HARD_REGNO_RENAME_OK(FROM, TO) true
 #endif
 
+#ifndef EPILOGUE_USES
+#define EPILOGUE_USES(REG) false
+#endif
+
 #ifdef GCC_INSN_FLAGS_H
 /* Dependent default target macro definitions
 

gcc/df-scan.c

@@ -72,10 +72,6 @@ typedef struct df_mw_hardreg *df_mw_hardreg_ptr;
 #define HAVE_sibcall_epilogue 0
 #endif
 
-#ifndef EPILOGUE_USES
-#define EPILOGUE_USES(REGNO)  0
-#endif
-
 /* The set of hard registers in eliminables[i].from. */
 
 static HARD_REG_SET elim_reg_set;

gcc/resource.c

@@ -1200,11 +1200,7 @@ init_resource_info (rtx_insn *epilogue_insn)
 			       &end_of_function_needs, true);
 
   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
-    if (global_regs[i]
-#ifdef EPILOGUE_USES
-	|| EPILOGUE_USES (i)
-#endif
-	)
+    if (global_regs[i] || EPILOGUE_USES (i))
       SET_HARD_REG_BIT (end_of_function_needs.regs, i);
 
   /* The registers required to be live at the end of the function are