Correct and clean up gen_Abs() for SPARC: The Sub was the wrong way round.

[r27885]

ir/be/sparc/sparc_transform.c

@@ -442,36 +442,23 @@ static ir_node *gen_Quot(ir_node *node)
 	                          new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
 }
 
-/**
- * transform abs node:
- * mov a, b
- * sra b, 31, b
- * xor a, b
- * sub a, b
- *
- * @return
- */
-static ir_node *gen_Abs(ir_node *node) {
-	ir_node  *block   = be_transform_node(get_nodes_block(node));
-	ir_mode  *mode    = get_irn_mode(node);
-	dbg_info *dbgi    = get_irn_dbg_info(node);
-	ir_node   *op     = get_Abs_op(node);
-
-	ir_node *mov, *sra, *xor, *sub, *new_op;
+static ir_node *gen_Abs(ir_node *node)
+{
+	ir_mode *const mode = get_irn_mode(node);
 
 	if (mode_is_float(mode)) {
 		return gen_helper_binfpop(node, mode, new_bd_sparc_fabs_s,
 		                          new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
+	} else {
+		ir_node  *const block  = be_transform_node(get_nodes_block(node));
+		dbg_info *const dbgi   = get_irn_dbg_info(node);
+		ir_node  *const op     = get_Abs_op(node);
+		ir_node  *const new_op = be_transform_node(op);
+		ir_node  *const sra    = new_bd_sparc_Sra_imm(dbgi, block, new_op, 31);
+		ir_node  *const xor    = new_bd_sparc_Xor_reg(dbgi, block, new_op, sra);
+		ir_node  *const sub    = new_bd_sparc_Sub_reg(dbgi, block, xor,    sra);
+		return sub;
 	}
-
-	new_op = be_transform_node(op);
-
-	mov = new_bd_sparc_Mov_reg(dbgi, block, new_op);
-	sra = new_bd_sparc_Sra_imm(dbgi, block, mov, 31);
-	xor = new_bd_sparc_Xor_reg(dbgi, block, new_op, sra);
-	sub = new_bd_sparc_Sub_reg(dbgi, block, sra, xor);
-
-	return sub;
 }
 
 /**