1 files changed, 204 insertions, 1 deletions

diff --git a/gcc/jit/dummy-frontend.cc b/gcc/jit/dummy-frontend.cc
index 327e8de..047c0c2 100644
--- a/gcc/jit/dummy-frontend.cc
+++ b/gcc/jit/dummy-frontend.cc
@@ -21,6 +21,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
+#include "target.h"
 #include "jit-playback.h"
 #include "stor-layout.h"
 #include "debug.h"
@@ -34,8 +35,12 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "diagnostic-format-text.h"
 #include "make-unique.h"
+#include "print-tree.h"
 
 #include <mpfr.h>
+#include <unordered_map>
+
+using namespace gcc::jit;
 
 /* Attribute handling.  */
 
@@ -140,6 +145,14 @@ static const struct attribute_spec::exclusions attr_target_exclusions[] =
   ATTR_EXCL (NULL, false, false, false),
 };
 
+/* These variables act as a cache for the target builtins. This is needed in
+   order to be able to type-check the calls since we can only get those types
+   in the playback phase while we need them in the recording phase.  */
+hash_map<nofree_string_hash, tree> target_builtins{};
+std::unordered_map<std::string, recording::function_type*> target_function_types
+{};
+recording::context target_builtins_ctxt{NULL};
+
 /* Table of machine-independent attributes supported in libgccjit.  */
 static const attribute_spec jit_gnu_attributes[] =
 {
@@ -1079,6 +1092,7 @@ jit_langhook_init (void)
 
   build_common_tree_nodes (flag_signed_char);
 
+  target_builtins.empty ();
   build_common_builtin_nodes ();
 
   /* The default precision for floating point numbers.  This is used
@@ -1086,6 +1100,8 @@ jit_langhook_init (void)
      eventually be controllable by a command line option.  */
   mpfr_set_default_prec (256);
 
+  targetm.init_builtins ();
+
   return true;
 }
 
@@ -1153,11 +1169,198 @@ jit_langhook_type_for_mode (machine_mode mode, int unsignedp)
   return NULL;
 }
 
-/* Record a builtin function.  We just ignore builtin functions.  */
+recording::type* tree_type_to_jit_type (tree type)
+{
+  if (TREE_CODE (type) == VECTOR_TYPE)
+  {
+    tree inner_type = TREE_TYPE (type);
+    recording::type* element_type = tree_type_to_jit_type (inner_type);
+    poly_uint64 size = TYPE_VECTOR_SUBPARTS (type);
+    long constant_size = size.to_constant ();
+    if (element_type != NULL)
+      return element_type->get_vector (constant_size);
+    return NULL;
+  }
+  if (TREE_CODE (type) == REFERENCE_TYPE)
+    // For __builtin_ms_va_start.
+    // FIXME: wrong type.
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_VOID);
+  if (TREE_CODE (type) == RECORD_TYPE)
+    // For __builtin_sysv_va_copy.
+    // FIXME: wrong type.
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_VOID);
+  /* TODO: Remove when we add support for sized floating-point types.  */
+  for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++)
+    if (type == FLOATN_NX_TYPE_NODE (i))
+      // FIXME: wrong type.
+      return new recording::memento_of_get_type (&target_builtins_ctxt,
+						 GCC_JIT_TYPE_VOID);
+  if (type == void_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_VOID);
+  else if (type == ptr_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_VOID_PTR);
+  else if (type == const_ptr_type_node)
+  {
+    // Void const ptr.
+    recording::type* result =
+      new recording::memento_of_get_type (&target_builtins_ctxt,
+					  GCC_JIT_TYPE_VOID_PTR);
+    return new recording::memento_of_get_const (result);
+  }
+  else if (type == unsigned_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_UNSIGNED_INT);
+  else if (type == long_unsigned_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_UNSIGNED_LONG);
+  else if (type == integer_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_INT);
+  else if (type == long_integer_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_LONG);
+  else if (type == long_long_integer_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_LONG_LONG);
+  else if (type == signed_char_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_SIGNED_CHAR);
+  else if (type == char_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_CHAR);
+  else if (type == unsigned_intQI_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_UINT8_T);
+  else if (type == short_integer_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_SHORT);
+  else if (type == short_unsigned_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_UNSIGNED_SHORT);
+  else if (type == complex_float_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_COMPLEX_FLOAT);
+  else if (type == complex_double_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_COMPLEX_DOUBLE);
+  else if (type == complex_long_double_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					    GCC_JIT_TYPE_COMPLEX_LONG_DOUBLE);
+  else if (type == float_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_FLOAT);
+  else if (type == double_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_DOUBLE);
+  else if (type == long_double_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_LONG_DOUBLE);
+  else if (type == bfloat16_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_BFLOAT16);
+  else if (type == dfloat128_type_node)
+    // FIXME: wrong type.
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_VOID);
+  else if (type == long_long_unsigned_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_UNSIGNED_LONG_LONG);
+  else if (type == boolean_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_BOOL);
+  else if (type == size_type_node)
+    return new recording::memento_of_get_type (&target_builtins_ctxt,
+					       GCC_JIT_TYPE_SIZE_T);
+  else if (TREE_CODE (type) == POINTER_TYPE)
+  {
+    tree inner_type = TREE_TYPE (type);
+    recording::type* element_type = tree_type_to_jit_type (inner_type);
+    return element_type->get_pointer ();
+  }
+  else
+  {
+    // Attempt to find an unqualified type when the current type has qualifiers.
+    tree tp = TYPE_MAIN_VARIANT (type);
+    for ( ; tp != NULL ; tp = TYPE_NEXT_VARIANT (tp))
+    {
+      if (TYPE_QUALS (tp) == 0 && type != tp)
+      {
+	recording::type* result = tree_type_to_jit_type (tp);
+	if (result != NULL)
+	{
+	  if (TYPE_READONLY (tp))
+	    result = new recording::memento_of_get_const (result);
+	  if (TYPE_VOLATILE (tp))
+	    result = new recording::memento_of_get_volatile (result);
+	  return result;
+	}
+      }
+    }
+
+    fprintf (stderr, "Unknown type:\n");
+    debug_tree (type);
+    abort ();
+  }
+
+  return NULL;
+}
+
+/* Record a builtin function.  We save their types to be able to check types
+   in recording and for reflection.  */
 
 static tree
 jit_langhook_builtin_function (tree decl)
 {
+  if (TREE_CODE (decl) == FUNCTION_DECL)
+  {
+    const char* name = IDENTIFIER_POINTER (DECL_NAME (decl));
+    target_builtins.put (name, decl);
+
+    std::string string_name (name);
+    if (target_function_types.count (string_name) == 0)
+    {
+      tree function_type = TREE_TYPE (decl);
+      tree arg = TYPE_ARG_TYPES (function_type);
+      bool is_variadic = false;
+
+      auto_vec <recording::type *> param_types;
+
+      while (arg != void_list_node)
+      {
+	if (arg == NULL)
+	{
+	  is_variadic = true;
+	  break;
+	}
+	if (arg != void_list_node)
+	{
+	  recording::type* arg_type = tree_type_to_jit_type (TREE_VALUE (arg));
+	  if (arg_type == NULL)
+	    return decl;
+	  param_types.safe_push (arg_type);
+	}
+	arg = TREE_CHAIN (arg);
+      }
+
+      tree result_type = TREE_TYPE (function_type);
+      recording::type* return_type = tree_type_to_jit_type (result_type);
+
+      if (return_type == NULL)
+	return decl;
+
+      recording::function_type* func_type =
+	new recording::function_type (&target_builtins_ctxt, return_type,
+				      param_types.length (),
+				      param_types.address (), is_variadic,
+				      false);
+
+      target_function_types[string_name] = func_type;
+    }
+  }
   return decl;
 }