[NDS32] Rename some variables so that we can clearly identify they represent…

[NDS32] Rename some variables so that we can clearly identify they represent general purpose registers.

gcc/
	* config/nds32/nds32.h (callee_saved_regs_size): Rename to ...
	(callee_saved_gpr_regs_size): ... this.
	(callee_saved_regs_first_regno): Rename to ...
	(callee_saved_first_gpr_regno): ... this.
	(callee_saved_regs_last_regno) Rename to ...
	(callee_saved_last_gpr_regno): ... this.
	* config/nds32/nds32.c (nds32_compute_stack_frame): Adjust renamed
	variables.
	(nds32_initial_elimination_offset): Likewise.
	(nds32_expand_prologue): Likewise.
	(nds32_expand_epilogue): Likewise.
	(nds32_expand_prologue_v3push): Likewise.
	(nds32_expand_epilogue_v3pop): Likewise.
	* config/nds32/nds32-md-auxiliary.c (nds32_output_stack_push):
	Adjust renamed variables.
	(nds32_output_stack_pop): Likewise.

From-SVN: r221306

gcc/ChangeLog

+2015-03-10  Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32.h (callee_saved_regs_size): Rename to ...
+	(callee_saved_gpr_regs_size): ... this.
+	(callee_saved_regs_first_regno): Rename to ...
+	(callee_saved_first_gpr_regno): ... this.
+	(callee_saved_regs_last_regno) Rename to ...
+	(callee_saved_last_gpr_regno): ... this.
+	* config/nds32/nds32.c (nds32_compute_stack_frame): Adjust renamed
+	variables.
+	(nds32_initial_elimination_offset): Likewise.
+	(nds32_expand_prologue): Likewise.
+	(nds32_expand_epilogue): Likewise.
+	(nds32_expand_prologue_v3push): Likewise.
+	(nds32_expand_epilogue_v3pop): Likewise.
+	* config/nds32/nds32-md-auxiliary.c (nds32_output_stack_push):
+	Adjust renamed variables.
+	(nds32_output_stack_pop): Likewise.
+
 2015-03-10  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	* dominance.c (nearest_common_dominator_for_set): Fix A_Dominated_by_B

gcc/config/nds32/nds32-md-auxiliary.c

@@ -604,8 +604,8 @@ nds32_output_stack_push (rtx par_rtx)
 			    + NDS32_MAX_GPR_REGS_FOR_ARGS
 			    - 1;
   /* Pick up callee-saved first regno and last regno for further use.  */
-  int rb_callee_saved = cfun->machine->callee_saved_regs_first_regno;
-  int re_callee_saved = cfun->machine->callee_saved_regs_last_regno;
+  int rb_callee_saved = cfun->machine->callee_saved_first_gpr_regno;
+  int re_callee_saved = cfun->machine->callee_saved_last_gpr_regno;
 
   /* First we need to check if we are pushing argument registers not used
      for the named arguments.  If so, we have to create 'smw.adm' (push.s)
@@ -644,7 +644,7 @@ nds32_output_stack_push (rtx par_rtx)
          otherwise, generate 'push25 Re,0'.  */
       sp_adjust = cfun->machine->local_size
 		  + cfun->machine->out_args_size
-		  + cfun->machine->callee_saved_area_padding_bytes;
+		  + cfun->machine->callee_saved_area_gpr_padding_bytes;
       if (satisfies_constraint_Iu08 (GEN_INT (sp_adjust))
 	  && NDS32_DOUBLE_WORD_ALIGN_P (sp_adjust))
 	operands[1] = GEN_INT (sp_adjust);
@@ -712,8 +712,8 @@ nds32_output_stack_pop (rtx par_rtx ATTRIBUTE_UNUSED)
   /* The operands array which will be used in output_asm_insn().  */
   rtx operands[3];
   /* Pick up callee-saved first regno and last regno for further use.  */
-  int rb_callee_saved = cfun->machine->callee_saved_regs_first_regno;
-  int re_callee_saved = cfun->machine->callee_saved_regs_last_regno;
+  int rb_callee_saved = cfun->machine->callee_saved_first_gpr_regno;
+  int re_callee_saved = cfun->machine->callee_saved_last_gpr_regno;
 
   /* If we step here, we are going to do v3pop or multiple pop operation.  */
 
@@ -742,7 +742,7 @@ nds32_output_stack_pop (rtx par_rtx ATTRIBUTE_UNUSED)
          and then use 'pop25 Re,0'.  */
       sp_adjust = cfun->machine->local_size
 		  + cfun->machine->out_args_size
-		  + cfun->machine->callee_saved_area_padding_bytes;
+		  + cfun->machine->callee_saved_area_gpr_padding_bytes;
       if (satisfies_constraint_Iu08 (GEN_INT (sp_adjust))
 	  && NDS32_DOUBLE_WORD_ALIGN_P (sp_adjust)
 	  && !cfun->calls_alloca)

gcc/config/nds32/nds32.h

@@ -218,15 +218,17 @@ struct GTY(()) machine_function
   /* Number of bytes on the stack for saving $lp.  */
   int lp_size;
 
-  /* Number of bytes on the stack for saving callee-saved registers.  */
-  int callee_saved_regs_size;
+  /* Number of bytes on the stack for saving general purpose
+     callee-saved registers.  */
+  int callee_saved_gpr_regs_size;
+
   /* The padding bytes in callee-saved area may be required.  */
-  int callee_saved_area_padding_bytes;
+  int callee_saved_area_gpr_padding_bytes;
 
-  /* The first required callee-saved register.  */
-  int callee_saved_regs_first_regno;
-  /* The last required callee-saved register.  */
-  int callee_saved_regs_last_regno;
+  /* The first required general purpose callee-saved register.  */
+  int callee_saved_first_gpr_regno;
+  /* The last required general purpose callee-saved register.  */
+  int callee_saved_last_gpr_regno;
 
   /* The padding bytes in varargs area may be required.  */
   int va_args_area_padding_bytes;