[PATCH, alpha]: Use std::swap

[PATCH, alpha]: Use std::swap

[Uros Bizjak]

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Hello!

2014-11-11  Uros Bizjak  <ubizjak@gmail.com>

    * config/alpha/alpha.c (alpha_emit_conditional_branch): Replace
    open-coded swap with std::swap to swap values.
    (alpha_emit_setcc): Ditto.
    (alpha_emit_conditional_move): Ditto.
    (alpha_split_tmode_pair): Ditto.

Bootstrapped and regression tested on alphaev68-linux-gnu, committed
to mainline SVN.

Uros.

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Index: alpha.c
===================================================================
--- alpha.c	(revision 217320)
+++ alpha.c	(working copy)
@@ -2545,7 +2545,7 @@ alpha_emit_conditional_branch (rtx operands[], mac
 	{
 	  cmp_code = swap_condition (code);
 	  branch_code = NE;
-	  tem = op0, op0 = op1, op1 = tem;
+	  std::swap (op0, op1);
 	}
       else
 	{
@@ -2569,7 +2569,7 @@ alpha_emit_conditional_branch (rtx operands[], mac
 	  else if (op0 == CONST0_RTX (DFmode))
 	    {
 	      /* Undo the swap we probably did just above.  */
-	      tem = op0, op0 = op1, op1 = tem;
+	      std::swap (op0, op1);
 	      branch_code = swap_condition (cmp_code);
 	      cmp_code = UNKNOWN;
 	    }
@@ -2689,7 +2689,7 @@ alpha_emit_setcc (rtx operands[], machine_mode cmp
       code = swap_condition (code);
       if (cmp_mode == DFmode)
 	cmp_code = code, code = NE;
-      tmp = op0, op0 = op1, op1 = tmp;
+      std::swap (op0, op1);
       break;
 
     default:
@@ -2786,7 +2786,7 @@ alpha_emit_conditional_move (rtx cmp, machine_mode
 	    {
 	      cmp_code = swap_condition (code);
 	      code = NE;
-	      tem = op0, op0 = op1, op1 = tem;
+	      std::swap (op0, op1);
 	    }
 	  break;
 
@@ -2857,7 +2857,7 @@ alpha_emit_conditional_move (rtx cmp, machine_mode
       if (cmp_mode == DImode && op1 == const0_rtx)
 	break;
       code = swap_condition (code);
-      tem = op0, op0 = op1, op1 = tem;
+      std::swap (op0, op1);
       break;
 
     default:
@@ -3318,9 +3318,8 @@ alpha_split_tmode_pair (rtx operands[4], machine_m
 
   if (fixup_overlap && reg_overlap_mentioned_p (operands[0], operands[3]))
     {
-      rtx tmp;
-      tmp = operands[0], operands[0] = operands[1], operands[1] = tmp;
-      tmp = operands[2], operands[2] = operands[3], operands[3] = tmp;
+      std::swap (operands[0], operands[1]);
+      std::swap (operands[2], operands[3]);
     }
 }