Revert the entire VLA series.

This reverts the following patch series, as they cause some regresssions.

commit 37c1ab67a3
type: add c99 variable length array support

	gdb/
	* dwarf2loc.c (dwarf2_locexpr_baton_eval): New function.
	(dwarf2_evaluate_property): New function.
	* dwarf2loc.h (dwarf2_evaluate_property): New function prototype.
	* dwarf2read.c (attr_to_dynamic_prop): New function.
	(read_subrange_type): Use attr_to_dynamic_prop to read high bound
	attribute.
	* gdbtypes.c: Include dwarf2loc.h.
	(is_dynamic_type): New function.
	(resolve_dynamic_type): New function.
	(resolve_dynamic_bounds): New function.
	(get_type_length): New function.
	(check_typedef): Use get_type_length to compute type length.
	* gdbtypes.h (TYPE_HIGH_BOUND_KIND): New macro.
	(TYPE_LOW_BOUND_KIND): New macro.
	(is_dynamic_type): New function prototype.
	* value.c (value_from_contents_and_address): Call resolve_dynamic_type
	to resolve dynamic properties of the type. Update comment.
	* valops.c (get_value_at, value_at, value_at_lazy): Update comment.

commit 26cb189f8b
vla: enable sizeof operator to work with variable length arrays

	gdb/
	* eval.c (evaluate_subexp_for_sizeof) <OP_VAR_VALUE>: If the type
	passed to sizeof is dynamic evaluate the argument to compute the length.

commit 04b19544ef
vla: enable sizeof operator for indirection

	gdb/
	* eval.c (evaluate_subexp_for_sizeof) <UNOP_IND>: Create an indirect
	value and retrieve the dynamic type size.

commit bcd629a44f
vla: update type from newly created value

	gdb/
	* ada-lang.c (ada_value_primitive_packed_val): Re-fetch type from value.
	(ada_template_to_fixed_record_type_1): Likewise.
	(ada_to_fixed_type_1): Likewise.
	* cp-valprint.c (cp_print_value_fields_rtti): Likewise.
	(cp_print_value): Likewise.
	* d-valprint.c (dynamic_array_type): Likewise.
	* eval.c (evaluate_subexp_with_coercion): Likewise.
	* findvar.c (address_of_variable): Likewise.
	* jv-valprint.c (java_value_print): Likewise.
	* valops.c (value_ind): Likewise.
	* value.c (coerce_ref): Likewise.

commit b86138fb04
vla: print "variable length" for unresolved dynamic bounds

	gdb/
	* c-typeprint.c (c_type_print_varspec_suffix): Added
	check for not yet resolved high bound. If unresolved, print
	"variable length" string to the console instead of random
	length.

commit e1969afbd4
vla: support for DW_AT_count

	gdb/
	* dwarf2read.c (read_subrange_type): Convert DW_AT_count to a dynamic
	property and store it as the high bound and flag the range accordingly.
	* gdbtypes.c (resolve_dynamic_bounds): If range is flagged as
	RANGE_UPPER_BOUND_IS_COUNT assign low + high - 1 as the new high bound.
	* gdbtypes.h (enum range_flags): New enum.
	(struct range_bounds): Add flags member.

commit 92b09522dc
vla: resolve dynamic bounds if value contents is a constant byte-sequence

	gdb/
	* findvar.c (default_read_var_value): Resolve dynamic bounds if location
	points to a constant blob.

commit 3bce82377f
vla: evaluate operand of sizeof if its type is a vla

	gdb/
	* eval.c (evaluate_subexp_for_sizeof): Add enum noside argument.
	(evaluate_subexp_standard): Pass noside argument.
	(evaluate_subexp_for_sizeof) <BINOP_SUBSCRIPT>: Handle subscript case
	if noside equals EVAL_NORMAL. If the subscript yields a vla type
	re-evaluate subscript operation with EVAL_NORMAL to enable sideffects.
	* gdbtypes.c (resolve_dynamic_bounds): Mark bound as evaluated.
	* gdbtypes.h (enum range_flags): Add RANGE_EVALUATED case.

	gdb/testsuite

	* gdb.base/vla-sideeffect.c: New file.
	* gdb.base/vla-sideeffect.exp: New file.

commit 504f34326e
test: cover subranges with present DW_AT_count attribute

	gdb/testsuite/
	* gdb.dwarf2/count.exp: New file.

commit 1a237e0ee5
test: multi-dimensional c99 vla.

	gdb/testsuite/
	* gdb.base/vla-multi.c: New file.
	* gdb.base/vla-multi.exp: New file.

commit 024e13b46f
test: evaluate pointers to C99 vla correctly.

	gdb/testsuite/
	* gdb.base/vla-ptr.c: New file.
	* gdb.base/vla-ptr.exp: New file.

commit c8655f75e2
test: basic c99 vla tests for C primitives

	gdb/testsuite/
	* gdb.base/vla-datatypes.c: New file.
	* gdb.base/vla-datatypes.exp: New file.

commit 58a84dcf29
test: add mi vla test

	gdb/testsuite/
	* gdb.mi/mi-vla-c99.exp: New file.
	* gdb.mi/vla.c: New file.

gdb/valops.c

@@ -266,7 +266,6 @@ value_cast_structs (struct type *type, struct value *v2)
 	{
 	  v = value_full_object (v2, real_type, full, top, using_enc);
 	  v = value_at_lazy (real_type, value_address (v));
-	  real_type = value_type (v);
 
 	  /* We might be trying to cast to the outermost enclosing
 	     type, in which case search_struct_field won't work.  */
@@ -802,7 +801,6 @@ value_dynamic_cast (struct type *type, struct value *arg)
     return value_at_lazy (type, addr);
 
   tem = value_at (type, addr);
-  type = value_type (tem);
 
   /* The first dynamic check specified in 5.2.7.  */
   if (is_public_ancestor (arg_type, TYPE_TARGET_TYPE (resolved_type)))
@@ -902,10 +900,7 @@ value_one (struct type *type)
   return val;
 }
 
-/* Helper function for value_at, value_at_lazy, and value_at_lazy_stack.
-   The type of the created value may differ from the passed type TYPE.
-   Make sure to retrieve the returned values's new type after this call
-   e.g. in case the type is a variable length array.  */
+/* Helper function for value_at, value_at_lazy, and value_at_lazy_stack.  */
 
 static struct value *
 get_value_at (struct type *type, CORE_ADDR addr, int lazy)
@@ -930,10 +925,7 @@ get_value_at (struct type *type, CORE_ADDR addr, int lazy)
    value_at_lazy instead.  value_at_lazy simply records the address of
    the data and sets the lazy-evaluation-required flag.  The lazy flag
    is tested in the value_contents macro, which is used if and when
-   the contents are actually required.  The type of the created value
-   may differ from the passed type TYPE.  Make sure to retrieve the
-   returned values's new type after this call e.g. in case the type
-   is a variable length array.
+   the contents are actually required.
 
    Note: value_at does *NOT* handle embedded offsets; perform such
    adjustments before or after calling it.  */
@@ -944,10 +936,7 @@ value_at (struct type *type, CORE_ADDR addr)
   return get_value_at (type, addr, 0);
 }
 
-/* Return a lazy value with type TYPE located at ADDR (cf. value_at).
-   The type of the created value may differ from the passed type TYPE.
-   Make sure to retrieve the returned values's new type after this call
-   e.g. in case the type is a variable length array.  */
+/* Return a lazy value with type TYPE located at ADDR (cf. value_at).  */
 
 struct value *
 value_at_lazy (struct type *type, CORE_ADDR addr)
@@ -1322,7 +1311,6 @@ address_of_variable (struct symbol *var, const struct block *b)
      Lazy evaluation pays off here.  */
 
   val = value_of_variable (var, b);
-  type = value_type (val);
 
   if ((VALUE_LVAL (val) == lval_memory && value_lazy (val))
       || TYPE_CODE (type) == TYPE_CODE_FUNC)
@@ -1571,7 +1559,6 @@ value_ind (struct value *arg1)
 			      (value_as_address (arg1)
 			       - value_pointed_to_offset (arg1)));
 
-      enc_type = value_type (arg2);
       return readjust_indirect_value_type (arg2, enc_type, base_type, arg1);
     }