Move int type methods out of dwarf2_per_cu_data

These methods rely on the current objfile to create types based on it.
Since dwarf2_per_cu_data is to become objfile-independent, these methods
need to mvoe.

int_type can be in dwarf2_per_objfile, as it only requires knowing about
the objfile.

addr_sized_int_type and addr_type also need to know about the DWARF
address type size, which is CU-specific.  The dwarf2_cu objects seems
like a good place for it, as it knows both about the current objfile and
the current CU.

gdb/ChangeLog:

	* dwarf2/read.h (struct dwarf2_per_cu_data) <addr_type,
	addr_sized_int_type>: Move to dwarf2_cu.
	<int_type>: Move to dwarf2_per_objfile.
	(struct dwarf2_per_objfile) <int_type>: Move here.
	* dwarf2/read.c (struct dwarf2_cu) <addr_type,
	addr_sized_int_type>: Move here.
	(read_func_scope): Update.
	(read_array_type): Update.
	(read_tag_string_type): Update.
	(attr_to_dynamic_prop): Update.
	(dwarf2_per_cu_data::int_type): Rename to...
	(dwarf2_per_objfile::int_type): ... this.
	(dwarf2_per_cu_data::addr_sized_int_type): Rename to...
	(dwarf2_cu::addr_sized_int_type): ... this.
	(read_subrange_type): Update.
	(dwarf2_per_cu_data::addr_type): Rename to...
	(dwarf2_cu::addr_type): ... this.
	(set_die_type): Update.

Change-Id: Ic4708ef99d43a8d99325ff91dee59b2eb706cb8f

3 files changed, 53 insertions, 35 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7ab7f6c..e754c13 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,26 @@
 2020-05-27  Simon Marchi  <simon.marchi@efficios.com>
 
+	* dwarf2/read.h (struct dwarf2_per_cu_data) <addr_type,
+	addr_sized_int_type>: Move to dwarf2_cu.
+	<int_type>: Move to dwarf2_per_objfile.
+	(struct dwarf2_per_objfile) <int_type>: Move here.
+	* dwarf2/read.c (struct dwarf2_cu) <addr_type,
+	addr_sized_int_type>: Move here.
+	(read_func_scope): Update.
+	(read_array_type): Update.
+	(read_tag_string_type): Update.
+	(attr_to_dynamic_prop): Update.
+	(dwarf2_per_cu_data::int_type): Rename to...
+	(dwarf2_per_objfile::int_type): ... this.
+	(dwarf2_per_cu_data::addr_sized_int_type): Rename to...
+	(dwarf2_cu::addr_sized_int_type): ... this.
+	(read_subrange_type): Update.
+	(dwarf2_per_cu_data::addr_type): Rename to...
+	(dwarf2_cu::addr_type): ... this.
+	(set_die_type): Update.
+
+2020-05-27  Simon Marchi  <simon.marchi@efficios.com>
+
 	* dwarf2/read.c (queue_and_load_all_dwo_tus): Access per_objfile
 	data through per_cu->cu.
 
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 4b63b8e..5ab0e8e 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -421,6 +421,16 @@ struct dwarf2_cu
   /* Reset the builder.  */
   void reset_builder () { m_builder.reset (); }
 
+  /* Return a type that is a generic pointer type, the size of which
+     matches the address size given in the compilation unit header for
+     this CU.  */
+  struct type *addr_type () const;
+
+  /* Find an integer type the same size as the address size given in
+     the compilation unit header for this CU.  UNSIGNED_P controls if
+     the integer is unsigned or not.  */
+  struct type *addr_sized_int_type (bool unsigned_p) const;
+
   /* The header of the compilation unit.  */
   struct comp_unit_head header {};
 
@@ -13107,7 +13117,7 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu)
       newobj->static_link
 	= XOBNEW (&objfile->objfile_obstack, struct dynamic_prop);
       attr_to_dynamic_prop (attr, die, cu, newobj->static_link,
-			    cu->per_cu->addr_type ());
+			    cu->addr_type ());
     }
 
   cu->list_in_scope = cu->get_builder ()->get_local_symbols ();
@@ -15499,8 +15509,7 @@ read_structure_type (struct die_info *die, struct dwarf2_cu *cu)
       else
 	{
 	  struct dynamic_prop prop;
-	  if (attr_to_dynamic_prop (attr, die, cu, &prop,
-				    cu->per_cu->addr_type ()))
+	  if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ()))
 	    type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop);
           TYPE_LENGTH (type) = 0;
 	}
@@ -16186,7 +16195,7 @@ read_array_type (struct die_info *die, struct dwarf2_cu *cu)
   if (attr != NULL)
     {
       int stride_ok;
-      struct type *prop_type = cu->per_cu->addr_sized_int_type (false);
+      struct type *prop_type = cu->addr_sized_int_type (false);
 
       byte_stride_prop
 	= (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop));
@@ -16986,13 +16995,13 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu)
 	  /* Pass 0 as the default as we know this attribute is constant
 	     and the default value will not be returned.  */
 	  LONGEST sz = len->constant_value (0);
-	  prop_type = cu->per_cu->int_type (sz, true);
+	  prop_type = cu->per_objfile->int_type (sz, true);
 	}
       else
 	{
 	  /* If the size is not specified then we assume it is the size of
 	     an address on this target.  */
-	  prop_type = cu->per_cu->addr_sized_int_type (true);
+	  prop_type = cu->addr_sized_int_type (true);
 	}
 
       /* Convert the attribute into a dynamic property.  */
@@ -17622,9 +17631,8 @@ attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die,
 /* See read.h.  */
 
 struct type *
-dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const
+dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const
 {
-  struct objfile *objfile = dwarf2_per_objfile->objfile;
   struct type *int_type;
 
   /* Helper macro to examine the various builtin types.  */
@@ -17649,10 +17657,10 @@ dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const
 /* See read.h.  */
 
 struct type *
-dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const
+dwarf2_cu::addr_sized_int_type (bool unsigned_p) const
 {
-  int addr_size = this->addr_size ();
-  return int_type (addr_size, unsigned_p);
+  int addr_size = this->per_cu->addr_size ();
+  return this->per_objfile->int_type (addr_size, unsigned_p);
 }
 
 /* Read the DW_AT_type attribute for a sub-range.  If this attribute is not
@@ -17677,7 +17685,7 @@ read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu)
      FIXME: muller/2010-05-28: Possible references to object for low bound,
      high bound or count are not yet handled by this code.  */
   if (index_type->code () == TYPE_CODE_VOID)
-    index_type = cu->per_cu->addr_sized_int_type (false);
+    index_type = cu->addr_sized_int_type (false);
 
   return index_type;
 }
@@ -17807,7 +17815,7 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu)
   attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu);
   if (attr_byte_stride != nullptr)
     {
-      struct type *prop_type = cu->per_cu->addr_sized_int_type (false);
+      struct type *prop_type = cu->addr_sized_int_type (false);
       attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop,
 			    prop_type);
     }
@@ -17827,7 +17835,7 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu)
 	}
       else
 	{
-	  struct type *prop_type = cu->per_cu->addr_sized_int_type (false);
+	  struct type *prop_type = cu->addr_sized_int_type (false);
 	  attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop,
 				prop_type);
 	}
@@ -23395,12 +23403,12 @@ dwarf2_per_cu_data::text_offset () const
 /* See read.h.  */
 
 struct type *
-dwarf2_per_cu_data::addr_type () const
+dwarf2_cu::addr_type () const
 {
-  struct objfile *objfile = dwarf2_per_objfile->objfile;
+  struct objfile *objfile = this->per_objfile->objfile;
   struct type *void_type = objfile_type (objfile)->builtin_void;
   struct type *addr_type = lookup_pointer_type (void_type);
-  int addr_size = this->addr_size ();
+  int addr_size = this->per_cu->addr_size ();
 
   if (TYPE_LENGTH (addr_type) == addr_size)
     return addr_type;
@@ -23738,7 +23746,7 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
   attr = dwarf2_attr (die, DW_AT_allocated, cu);
   if (attr != NULL && attr->form_is_block ())
     {
-      struct type *prop_type = cu->per_cu->addr_sized_int_type (false);
+      struct type *prop_type = cu->addr_sized_int_type (false);
       if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type))
         type->add_dyn_prop (DYN_PROP_ALLOCATED, prop);
     }
@@ -23753,7 +23761,7 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
   attr = dwarf2_attr (die, DW_AT_associated, cu);
   if (attr != NULL && attr->form_is_block ())
     {
-      struct type *prop_type = cu->per_cu->addr_sized_int_type (false);
+      struct type *prop_type = cu->addr_sized_int_type (false);
       if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type))
         type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop);
     }
@@ -23766,8 +23774,7 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
 
   /* Read DW_AT_data_location and set in type.  */
   attr = dwarf2_attr (die, DW_AT_data_location, cu);
-  if (attr_to_dynamic_prop (attr, die, cu, &prop,
-			    cu->per_cu->addr_type ()))
+  if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ()))
     type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop);
 
   if (dwarf2_per_objfile->die_type_hash == NULL)
diff --git a/gdb/dwarf2/read.h b/gdb/dwarf2/read.h
index e9c74a4..77c1f24 100644
--- a/gdb/dwarf2/read.h
+++ b/gdb/dwarf2/read.h
@@ -301,6 +301,10 @@ struct dwarf2_per_objfile
   /* Set the compunit_symtab associated to PER_CU.  */
   void set_symtab (const dwarf2_per_cu_data *per_cu, compunit_symtab *symtab);
 
+  /* Find an integer type SIZE_IN_BYTES bytes in size and return it.
+     UNSIGNED_P controls if the integer is unsigned or not.  */
+  struct type *int_type (int size_in_bytes, bool unsigned_p) const;
+
   /* Back link.  */
   struct objfile *objfile;
 
@@ -510,20 +514,6 @@ struct dwarf2_per_cu_data
      corresponding offset in the parent objfile.  */
   CORE_ADDR text_offset () const;
 
-  /* Return a type that is a generic pointer type, the size of which
-     matches the address size given in the compilation unit header for
-     this CU.  */
-  struct type *addr_type () const;
-
-  /* Find an integer type SIZE_IN_BYTES bytes in size and return it.
-     UNSIGNED_P controls if the integer is unsigned or not.  */
-  struct type *int_type (int size_in_bytes, bool unsigned_p) const;
-
-  /* Find an integer type the same size as the address size given in
-     the compilation unit header for this CU.  UNSIGNED_P controls if
-     the integer is unsigned or not.  */
-  struct type *addr_sized_int_type (bool unsigned_p) const;
-
   /* Return DWARF version number of this CU.  */
   short version () const
   {