Index: gcc/fold-const.c
===================================================================
--- gcc/fold-const.c	(révision 128023)
+++ gcc/fold-const.c	(copie de travail)
@@ -10771,6 +10771,12 @@
       if (operand_equal_p (arg0, arg1, 0))
 	return non_lvalue (fold_convert (type, arg0));
 
+      /* Functions are always aligned.  */
+      if (TREE_CODE (arg0) == ADDR_EXPR
+	  && TREE_CODE (TREE_OPERAND (arg0, 0)) == FUNCTION_DECL
+	  && integer_onep(arg1))
+	return omit_one_operand (type, integer_zero_node, arg0);
+
       /* ~X & X is always zero.  */
       if (TREE_CODE (arg0) == BIT_NOT_EXPR
 	  && operand_equal_p (TREE_OPERAND (arg0, 0), arg1, 0))