libgccjit: Generate debug info for variables

Finalize declares via available helpers after location is set. Set
TYPE_NAME of primitives and friends to "int" etc. Debug info is now
set properly for variables.

Signed-off-by:
2021-09-09	Petter Tomner	<tomner@kth.se>

gcc/jit/
	* jit-playback.c: Moved global var processing to after loc handling.
	  Setting TYPE_NAME for fundamental types.
	  Using common functions for finalizing globals.
	* jit-playback.h: New method init_types().
	  Changed get_tree_node_for_type() to method.

gcc/testsuite/
	* jit.dg/test-error-array-bounds.c: Array is not unsigned
	* jit.dg/jit.exp: Helper function
	* jit.dg/test-debuginfo.c: New testcase

2 files changed, 61 insertions, 14 deletions

diff --git a/gcc/jit/jit-playback.c b/gcc/jit/jit-playback.c
index 79ac525..59399de 100644
--- a/gcc/jit/jit-playback.c
+++ b/gcc/jit/jit-playback.c
@@ -165,7 +165,8 @@ gt_ggc_mx ()
 
 /* Given an enum gcc_jit_types value, get a "tree" type.  */
 
-static tree
+tree
+playback::context::
 get_tree_node_for_type (enum gcc_jit_types type_)
 {
   switch (type_)
@@ -192,11 +193,7 @@ get_tree_node_for_type (enum gcc_jit_types type_)
       return short_unsigned_type_node;
 
     case GCC_JIT_TYPE_CONST_CHAR_PTR:
-      {
-	tree const_char = build_qualified_type (char_type_node,
-						TYPE_QUAL_CONST);
-	return build_pointer_type (const_char);
-      }
+      return m_const_char_ptr;
 
     case GCC_JIT_TYPE_INT:
       return integer_type_node;
@@ -579,10 +576,6 @@ playback::lvalue *
 playback::context::
 global_finalize_lvalue (tree inner)
 {
-  varpool_node::get_create (inner);
-
-  varpool_node::finalize_decl (inner);
-
   m_globals.safe_push (inner);
 
   return new lvalue (this, inner);
@@ -2952,9 +2945,7 @@ replay ()
 {
   JIT_LOG_SCOPE (get_logger ());
 
-  m_const_char_ptr
-    = build_pointer_type (build_qualified_type (char_type_node,
-						TYPE_QUAL_CONST));
+  init_types ();
 
   /* Replay the recorded events:  */
   timevar_push (TV_JIT_REPLAY);
@@ -2984,10 +2975,17 @@ replay ()
     {
       int i;
       function *func;
-
+      tree global;
       /* No GC can happen yet; process the cached source locations.  */
       handle_locations ();
 
+      /* Finalize globals. See how FORTRAN 95 does it in gfc_be_parse_file()
+         for a simple reference. */
+      FOR_EACH_VEC_ELT (m_globals, i, global)
+        rest_of_decl_compilation (global, true, true);
+
+      wrapup_global_declarations (m_globals.address(), m_globals.length());
+
       /* We've now created tree nodes for the stmts in the various blocks
 	 in each function, but we haven't built each function's single stmt
 	 list yet.  Do so now.  */
@@ -3081,6 +3079,50 @@ location_comparator (const void *lhs, const void *rhs)
   return loc_lhs->get_column_num () - loc_rhs->get_column_num ();
 }
 
+/* Initialize the NAME_TYPE of the primitive types as well as some
+   others. */
+void
+playback::context::
+init_types ()
+{
+  /* See lto_init() in lto-lang.c or void visit (TypeBasic *t) in D's types.cc 
+     for reference. If TYPE_NAME is not set, debug info will not contain types */
+#define NAME_TYPE(t,n) \
+if (t) \
+  TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \
+                              get_identifier (n), t)
+
+  NAME_TYPE (integer_type_node, "int");
+  NAME_TYPE (char_type_node, "char");
+  NAME_TYPE (long_integer_type_node, "long int");
+  NAME_TYPE (unsigned_type_node, "unsigned int");
+  NAME_TYPE (long_unsigned_type_node, "long unsigned int");
+  NAME_TYPE (long_long_integer_type_node, "long long int");
+  NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int");
+  NAME_TYPE (short_integer_type_node, "short int");
+  NAME_TYPE (short_unsigned_type_node, "short unsigned int");
+  if (signed_char_type_node != char_type_node)
+    NAME_TYPE (signed_char_type_node, "signed char");
+  if (unsigned_char_type_node != char_type_node)
+    NAME_TYPE (unsigned_char_type_node, "unsigned char");
+  NAME_TYPE (float_type_node, "float");
+  NAME_TYPE (double_type_node, "double");
+  NAME_TYPE (long_double_type_node, "long double");
+  NAME_TYPE (void_type_node, "void");
+  NAME_TYPE (boolean_type_node, "bool");
+  NAME_TYPE (complex_float_type_node, "complex float");
+  NAME_TYPE (complex_double_type_node, "complex double");
+  NAME_TYPE (complex_long_double_type_node, "complex long double");
+  
+  m_const_char_ptr = build_pointer_type(
+    build_qualified_type (char_type_node, TYPE_QUAL_CONST));
+
+  NAME_TYPE (m_const_char_ptr, "char");
+  NAME_TYPE (size_type_node, "size_t");
+  NAME_TYPE (fileptr_type_node, "FILE");
+#undef NAME_TYPE
+}
+
 /* Our API allows locations to be created in arbitrary orders, but the
    linemap API requires locations to be created in ascending order
    as if we were tokenizing files.
diff --git a/gcc/jit/jit-playback.h b/gcc/jit/jit-playback.h
index 825a3e1..f670c9e 100644
--- a/gcc/jit/jit-playback.h
+++ b/gcc/jit/jit-playback.h
@@ -271,8 +271,13 @@ private:
   source_file *
   get_source_file (const char *filename);
 
+  tree
+  get_tree_node_for_type (enum gcc_jit_types type_);
+
   void handle_locations ();
 
+  void init_types ();
+
   const char * get_path_c_file () const;
   const char * get_path_s_file () const;
   const char * get_path_so_file () const;