Switch from clear_builtin_types to TARGET_CLEANUP_BUILTINS

gcc/config/i386/i386-builtins.cc

@@ -227,8 +227,8 @@ static GTY(()) tree ix86_builtins[(int) IX86_BUILTIN_MAX + 1];
 
 struct builtin_isa ix86_builtins_isa[(int) IX86_BUILTIN_MAX];
 
-static void
-clear_builtin_types (void)
+void
+ix86_cleanup_builtins (void)
 {
   for (int i = 0 ; i < IX86_BT_LAST_CPTR + 1 ; i++)
     ix86_builtin_type_tab[i] = NULL;
@@ -1490,8 +1490,6 @@ ix86_init_builtins (void)
 {
   tree ftype, decl;
 
-  clear_builtin_types ();
-
   ix86_init_builtin_types ();
 
   /* Builtins to get CPU type and features. */

gcc/config/i386/i386-builtins.h

@@ -318,6 +318,7 @@ extern builtin_isa ix86_builtins_isa[(int) IX86_BUILTIN_MAX];
 tree ix86_builtin_vectorized_function (unsigned int fn, tree type_out,
 					      tree type_in);
 void ix86_init_builtins (void);
+void ix86_cleanup_builtins (void);
 tree ix86_vectorize_builtin_gather (const_tree mem_vectype,
 					   const_tree index_type, int scale);
 tree ix86_builtin_decl (unsigned code, bool);

gcc/config/i386/i386.cc

@@ -26538,6 +26538,8 @@ static const scoped_attribute_specs *const ix86_attribute_table[] =
 
 #undef TARGET_INIT_BUILTINS
 #define TARGET_INIT_BUILTINS ix86_init_builtins
+#undef TARGET_CLEANUP_BUILTINS
+#define TARGET_CLEANUP_BUILTINS ix86_cleanup_builtins
 #undef TARGET_BUILTIN_DECL
 #define TARGET_BUILTIN_DECL ix86_builtin_decl
 #undef TARGET_EXPAND_BUILTIN

gcc/doc/tm.texi

@@ -12112,6 +12112,13 @@ only language front ends that use those two functions will call
 @samp{TARGET_INIT_BUILTINS}.
 @end deftypefn
 
+@deftypefn {Target Hook} void TARGET_CLEANUP_BUILTINS (void)
+Define this hook if you have any machine-specific built-in functions
+that need to be cleaned up.  It should be a function that performs the
+necessary cleanup so that a second compilation in the same process via
+the jit frontend will not fail.
+@end deftypefn
+
 @deftypefn {Target Hook} tree TARGET_BUILTIN_DECL (unsigned @var{code}, bool @var{initialize_p})
 Define this hook if you have any machine-specific built-in functions
 that need to be defined.  It should be a function that returns the

gcc/doc/tm.texi.in

@@ -7868,6 +7868,8 @@ to by @var{ce_info}.
 
 @hook TARGET_INIT_BUILTINS
 
+@hook TARGET_CLEANUP_BUILTINS
+
 @hook TARGET_BUILTIN_DECL
 
 @hook TARGET_EXPAND_BUILTIN

gcc/jit/dummy-frontend.cc

@@ -1088,6 +1088,12 @@ jit_langhook_init (void)
   return true;
 }
 
+void
+jit_langhook_finish (void)
+{
+  //targetm.cleanup_builtins ();
+}
+
 static void
 jit_langhook_parse_file (void)
 {
@@ -1455,6 +1461,9 @@ jit_langhook_eh_personality (void)
 #undef LANG_HOOKS_INIT
 #define LANG_HOOKS_INIT		jit_langhook_init
 
+#undef LANG_HOOKS_FINISH
+#define LANG_HOOKS_FINISH		jit_langhook_finish
+
 #undef LANG_HOOKS_PARSE_FILE
 #define LANG_HOOKS_PARSE_FILE		jit_langhook_parse_file
 

gcc/target.def

@@ -2450,6 +2450,16 @@ only language front ends that use those two functions will call\n\
  void, (void),
  hook_void_void)
 
+/* Clean up target-specific built-in functions.  */
+DEFHOOK
+(cleanup_builtins,
+ "Define this hook if you have any machine-specific built-in functions\n\
+that need to be cleaned up.  It should be a function that performs the\n\
+necessary cleanup so that a second compilation in the same process via\n\
+the jit frontend will not fail.",
+ void, (void),
+ hook_void_void)
+
 /* Initialize (if INITIALIZE_P is true) and return the target-specific
    built-in function decl for CODE.
    Return NULL if that is not possible.  Return error_mark_node if CODE