builtins.c (expand_builtin_nonlocal_goto): Avoid evaluating PIC_OFFSET_TABLE_REGNUM twice.

	* builtins.c (expand_builtin_nonlocal_goto): Avoid evaluating
	PIC_OFFSET_TABLE_REGNUM twice.

From-SVN: r241625

gcc/ChangeLog

+2016-10-27  Aldy Hernandez  <aldyh@redhat.com>
+
+	* builtins.c (expand_builtin_nonlocal_goto): Avoid evaluating
+	PIC_OFFSET_TABLE_REGNUM twice.
+
 2016-10-27  Bin Cheng  <bin.cheng@arm.com>
 
 	* match.pd ((convert (op:s (convert@2 @0) (convert?@3 @1)))): Add

gcc/builtins.c

@@ -1140,8 +1140,8 @@ expand_builtin_nonlocal_goto (tree exp)
 	 to targets with a nonlocal_goto pattern; they are free
 	 to implement it in their own way.  Note also that this is
 	 a no-op if the GP register is a global invariant.)  */
-      if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
-	  && fixed_regs[PIC_OFFSET_TABLE_REGNUM])
+      unsigned regnum = PIC_OFFSET_TABLE_REGNUM;
+      if (regnum != INVALID_REGNUM && fixed_regs[regnum])
 	emit_use (pic_offset_table_rtx);
 
       emit_indirect_jump (r_label);