--- a/gcc/ggc.h	Thu Oct 25 07:37:49 2018 +0900
+++ b/gcc/ggc.h	Thu Feb 13 11:34:05 2020 +0900
@@ -1,6 +1,6 @@
 /* Garbage collection for the GNU compiler.
 
-   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   Copyright (C) 1998-2020 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -149,7 +149,7 @@
 /* Free a block.  To be used when known for certain it's not reachable.  */
 extern void ggc_free (void *);
 
-extern void dump_ggc_loc_statistics (bool);
+extern void dump_ggc_loc_statistics ();
 
 /* Reallocator.  */
 #define GGC_RESIZEVEC(T, P, N) \
@@ -185,6 +185,18 @@
 						 PASS_MEM_STAT));
 }
 
+/* GGC allocation function that does not call finalizer for type
+   that have need_finalization_p equal to true.  User is responsible
+   for calling of the destructor.  */
+
+template<typename T>
+inline T *
+ggc_alloc_no_dtor (ALONE_CXX_MEM_STAT_INFO)
+{
+  return static_cast<T *> (ggc_internal_alloc (sizeof (T), NULL, 0, 1
+					       PASS_MEM_STAT));
+}
+
 template<typename T>
 inline T *
 ggc_cleared_alloc (ALONE_CXX_MEM_STAT_INFO)
@@ -230,6 +242,16 @@
     return ggc_internal_alloc (s PASS_MEM_STAT);
 }
 
+/* Call destructor and free the garbage collected memory.  */
+
+template <typename T>
+inline void
+ggc_delete (T *ptr)
+{
+  ptr->~T ();
+  ggc_free (ptr);
+}
+
 /* Allocate a gc-able string, and fill it with LENGTH bytes from CONTENTS.
    If LENGTH is -1, then CONTENTS is assumed to be a
    null-terminated string and the memory sized accordingly.  */
@@ -243,6 +265,9 @@
    function is called, not during allocations.  */
 extern void ggc_collect	(void);
 
+/* Return unused memory pages to the system.  */
+extern void ggc_trim (void);
+
 /* Assume that all GGC memory is reachable and grow the limits for next collection. */
 extern void ggc_grow (void);
 
@@ -263,6 +288,9 @@
 /* Heuristics.  */
 extern void init_ggc_heuristics (void);
 
+/* Report current heap memory use to stderr.  */
+extern void report_heap_memory_use (void);
+
 #define ggc_alloc_rtvec_sized(NELT)				\
   (rtvec_def *) ggc_internal_alloc (sizeof (struct rtvec_def)		\
 		       + ((NELT) - 1) * sizeof (rtx))		\