gimple-ssa-sprintf.c (format_string): Do not hardcode size of target's wchar_t.

* gimple-ssa-sprintf.c (format_string): Do not hardcode size of
        target's wchar_t.
        * tree.c (get_typenode_from_name): Moved from fortran/trans-types.c.
        * tree.h (get_typenode_from_name): Prototype.

        * trans-types.c (get_typenode_from_name): Moved into gcc/tree.c.

From-SVN: r264833

gcc/ChangeLog

@@ -1,3 +1,10 @@
+2018-10-03  Jeff Law  <law@redhat.com>
+
+        * gimple-ssa-sprintf.c (format_string): Do not hardcode size of
+        target's wchar_t.
+        * tree.c (get_typenode_from_name): Moved from fortran/trans-types.c.
+        * tree.h (get_typenode_from_name): Prototype.
+
 2018-10-03  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (*cmp<X87MODEF:mode>_<SWI24:mode>_i387):

gcc/fortran/ChangeLog

@@ -1,3 +1,7 @@
+2018-10-03  Jeff Law  <law@redhat.comg>
+
+        * trans-types.c (get_typenode_from_name): Moved into gcc/tree.c.
+
 2018-10-01  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/65677

gcc/fortran/trans-types.c

@@ -218,43 +218,6 @@ get_int_kind_from_node (tree type)
   return -1;
 }
 
-/* Return a typenode for the "standard" C type with a given name.  */
-static tree
-get_typenode_from_name (const char *name)
-{
-  if (name == NULL || *name == '\0')
-    return NULL_TREE;
-
-  if (strcmp (name, "char") == 0)
-    return char_type_node;
-  if (strcmp (name, "unsigned char") == 0)
-    return unsigned_char_type_node;
-  if (strcmp (name, "signed char") == 0)
-    return signed_char_type_node;
-
-  if (strcmp (name, "short int") == 0)
-    return short_integer_type_node;
-  if (strcmp (name, "short unsigned int") == 0)
-    return short_unsigned_type_node;
-
-  if (strcmp (name, "int") == 0)
-    return integer_type_node;
-  if (strcmp (name, "unsigned int") == 0)
-    return unsigned_type_node;
-
-  if (strcmp (name, "long int") == 0)
-    return long_integer_type_node;
-  if (strcmp (name, "long unsigned int") == 0)
-    return long_unsigned_type_node;
-
-  if (strcmp (name, "long long int") == 0)
-    return long_long_integer_type_node;
-  if (strcmp (name, "long long unsigned int") == 0)
-    return long_long_unsigned_type_node;
-
-  gcc_unreachable ();
-}
-
 static int
 get_int_kind_from_name (const char *name)
 {

gcc/gimple-ssa-sprintf.c

@@ -2179,7 +2179,19 @@ format_string (const directive &dir, tree arg, vr_values *)
   fmtresult res;
 
   /* Compute the range the argument's length can be in.  */
-  int count_by = dir.specifier == 'S' || dir.modifier == FMT_LEN_l ? 4 : 1;
+  int count_by = 1;
+  if (dir.specifier == 'S' || dir.modifier == FMT_LEN_l)
+    {
+      /* Get a node for a C type that will be the same size
+	 as a wchar_t on the target.  */
+      tree node = get_typenode_from_name (MODIFIED_WCHAR_TYPE);
+
+      /* Now that we have a suitable node, get the number of
+	 bytes it occupies.  */
+      count_by = int_size_in_bytes (node); 
+      gcc_checking_assert (count_by == 2 || count_by == 4);
+    }
+
   fmtresult slen = get_string_length (arg, count_by);
   if (slen.range.min == slen.range.max
       && slen.range.min < HOST_WIDE_INT_MAX)

gcc/tree.c

@@ -14408,6 +14408,43 @@ expr_type_first_operand_type_p (tree_code code)
     }
 }
 
+/* Return a typenode for the "standard" C type with a given name.  */
+tree
+get_typenode_from_name (const char *name)
+{
+  if (name == NULL || *name == '\0')
+    return NULL_TREE;
+
+  if (strcmp (name, "char") == 0)
+    return char_type_node;
+  if (strcmp (name, "unsigned char") == 0)
+    return unsigned_char_type_node;
+  if (strcmp (name, "signed char") == 0)
+    return signed_char_type_node;
+
+  if (strcmp (name, "short int") == 0)
+    return short_integer_type_node;
+  if (strcmp (name, "short unsigned int") == 0)
+    return short_unsigned_type_node;
+
+  if (strcmp (name, "int") == 0)
+    return integer_type_node;
+  if (strcmp (name, "unsigned int") == 0)
+    return unsigned_type_node;
+
+  if (strcmp (name, "long int") == 0)
+    return long_integer_type_node;
+  if (strcmp (name, "long unsigned int") == 0)
+    return long_unsigned_type_node;
+
+  if (strcmp (name, "long long int") == 0)
+    return long_long_integer_type_node;
+  if (strcmp (name, "long long unsigned int") == 0)
+    return long_long_unsigned_type_node;
+
+  gcc_unreachable ();
+}
+
 /* List of pointer types used to declare builtins before we have seen their
    real declaration.
 

gcc/tree.h

@@ -4987,6 +4987,9 @@ extern tree get_base_address (tree t);
    of EXP, an ARRAY_REF or an ARRAY_RANGE_REF.  */
 extern tree array_ref_element_size (tree);
 
+/* Return a typenode for the "standard" C type with a given name.  */
+extern tree get_typenode_from_name (const char *);
+
 /* Return a tree representing the upper bound of the array mentioned in
    EXP, an ARRAY_REF or an ARRAY_RANGE_REF.  */
 extern tree array_ref_up_bound (tree);