Merge pull request #30 from antoyo/feature/sizeof

Implement sizeof

Author: antoyo

gcc/jit/jit-playback.cc

@@ -1131,6 +1131,16 @@ new_rvalue_from_const <void *> (type *type,
 
 /* Construct a playback::rvalue instance (wrapping a tree).  */
 
+playback::rvalue *
+playback::context::
+new_sizeof (type *type)
+{
+  tree inner = TYPE_SIZE_UNIT (type->as_tree ());
+  return new rvalue (this, inner);
+}
+
+/* Construct a playback::rvalue instance (wrapping a tree).  */
+
 playback::rvalue *
 playback::context::
 new_string_literal (const char *value)

gcc/jit/jit-playback.h

@@ -153,6 +153,9 @@ class context : public log_user
   new_rvalue_from_const (type *type,
 			 HOST_TYPE value);
 
+  rvalue *
+  new_sizeof (type *type);
+
   rvalue *
   new_string_literal (const char *value);
 

gcc/jit/jit-recording.cc

@@ -1125,6 +1125,21 @@ recording::context::new_global_init_rvalue (lvalue *variable,
   gbl->set_rvalue_init (init); /* Needed by the global for write dump.  */
 }
 
+/* Create a recording::memento_of_sizeof instance and add it
+   to this context's list of mementos.
+
+   Implements the post-error-checking part of
+   gcc_jit_context_new_sizeof.  */
+
+recording::rvalue *
+recording::context::new_sizeof (recording::type *type)
+{
+  recording::rvalue *result =
+    new memento_of_new_sizeof (this, NULL, type);
+  record (result);
+  return result;
+}
+
 /* Create a recording::memento_of_new_string_literal instance and add it
    to this context's list of mementos.
 
@@ -5535,6 +5550,43 @@ memento_of_new_rvalue_from_const <void *>::write_reproducer (reproducer &r)
 
 } // namespace recording
 
+/* The implementation of class gcc::jit::recording::memento_of_new_sizeof.  */
+
+/* Implementation of pure virtual hook recording::memento::replay_into
+   for recording::memento_of_new_sizeof.  */
+
+void
+recording::memento_of_new_sizeof::replay_into (replayer *r)
+{
+  set_playback_obj (r->new_sizeof (m_type->playback_type ()));
+}
+
+/* Implementation of recording::memento::make_debug_string for
+   sizeof expressions.  */
+
+recording::string *
+recording::memento_of_new_sizeof::make_debug_string ()
+{
+  return string::from_printf (m_ctxt,
+			      "sizeof (%s)",
+			      m_type->get_debug_string ());
+}
+
+/* Implementation of recording::memento::write_reproducer for sizeof
+   expressions. */
+
+void
+recording::memento_of_new_sizeof::write_reproducer (reproducer &r)
+{
+  const char *id = r.make_identifier (this, "rvalue");
+  r.write ("  gcc_jit_rvalue *%s =\n"
+    "    gcc_jit_context_new_sizeof (%s, /* gcc_jit_context *ctxt */\n"
+    "                                %s); /* gcc_jit_type *type */\n",
+    id,
+    r.get_identifier (get_context ()),
+    m_type->get_debug_string ());
+}
+
 /* The implementation of class gcc::jit::recording::memento_of_new_string_literal.  */
 
 /* Implementation of pure virtual hook recording::memento::replay_into

gcc/jit/jit-recording.h

@@ -177,6 +177,9 @@ class context : public log_user
   new_rvalue_from_const (type *type,
 			 HOST_TYPE value);
 
+  rvalue *
+  new_sizeof (type *type);
+
   rvalue *
   new_string_literal (const char *value);
 
@@ -1723,6 +1726,31 @@ class memento_of_new_rvalue_from_const : public rvalue
   HOST_TYPE m_value;
 };
 
+class memento_of_new_sizeof : public rvalue
+{
+public:
+  memento_of_new_sizeof (context *ctxt,
+			 location *loc,
+			 type *type)
+  : rvalue (ctxt, loc, ctxt->get_type (GCC_JIT_TYPE_INT)),
+    m_type (type) {}
+
+  void replay_into (replayer *r) final override;
+
+  void visit_children (rvalue_visitor *) final override {}
+
+private:
+  string * make_debug_string () final override;
+  void write_reproducer (reproducer &r) final override;
+  enum precedence get_precedence () const final override
+  {
+    return PRECEDENCE_PRIMARY;
+  }
+
+private:
+  type *m_type;
+};
+
 class memento_of_new_string_literal : public rvalue
 {
 public:

gcc/jit/libgccjit.cc

@@ -2128,6 +2128,23 @@ gcc_jit_context_null (gcc_jit_context *ctxt,
   return gcc_jit_context_new_rvalue_from_ptr (ctxt, pointer_type, NULL);
 }
 
+/* Public entrypoint.  See description in libgccjit.h.
+
+   After error-checking, the real work is done by the
+   gcc::jit::recording::context::new_sizeof method in
+   jit-recording.cc.  */
+
+gcc_jit_rvalue *
+gcc_jit_context_new_sizeof (gcc_jit_context *ctxt,
+			    gcc_jit_type *type)
+{
+  RETURN_NULL_IF_FAIL (ctxt, NULL, NULL, "NULL context");
+  JIT_LOG_FUNC (ctxt->get_logger ());
+
+  return ((gcc_jit_rvalue *)ctxt
+	  ->new_sizeof (type));
+}
+
 /* Public entrypoint.  See description in libgccjit.h.
 
    After error-checking, the real work is done by the

gcc/jit/libgccjit.h

@@ -1102,6 +1102,10 @@ extern gcc_jit_rvalue *
 gcc_jit_context_null (gcc_jit_context *ctxt,
 		      gcc_jit_type *pointer_type);
 
+extern gcc_jit_rvalue *
+gcc_jit_context_new_sizeof (gcc_jit_context *ctxt,
+			    gcc_jit_type *type);
+
 /* String literals. */
 extern gcc_jit_rvalue *
 gcc_jit_context_new_string_literal (gcc_jit_context *ctxt,

gcc/jit/libgccjit.map

@@ -331,3 +331,8 @@ LIBGCCJIT_ABI_34 {
   global:
     gcc_jit_type_get_restrict;
 } LIBGCCJIT_ABI_33;
+
+LIBGCCJIT_ABI_35 {
+  global:
+    gcc_jit_context_new_sizeof;
+} LIBGCCJIT_ABI_34;