Come up with fast {function,call}_summary classes (PR ipa/89306).

2019-02-18  Martin Liska  <mliska@suse.cz>

	PR ipa/89306
	* cgraph.c (symbol_table::create_edge): Set m_summary_id to -1
	by default.
	(symbol_table::free_edge): Recycle m_summary_id.
	* cgraph.h (get_summary_id): New.
	(symbol_table::release_symbol): Set m_summary_id to -1
	by default.
	(symbol_table::allocate_cgraph_symbol): Recycle m_summary_id.
	* ipa-fnsummary.c (ipa_fn_summary_t): Switch from
	function_summary to fast_function_summary.
	* ipa-fnsummary.h (ipa_fn_summary_t): Likewise.
	* ipa-pure-const.c (class funct_state_summary_t):
	Switch from function_summary to fast_function_summary.
	* ipa-reference.c (class ipa_ref_var_info_summary_t): Likewise.
	(class ipa_ref_opt_summary_t): Switch from function_summary
	to fast_function_summary.
	* symbol-summary.h (class function_summary_base): New class
	that is created from base of former function_summary.
	(function_summary_base::unregister_hooks): New.
	(class function_summary): Inherit from function_summary_base.
	(class call_summary_base): New class
	that is created from base of former call_summary.
	(class call_summary): Inherit from call_summary_base.
	(struct is_same): New.
	(class fast_function_summary): New summary class.
	(class fast_call_summary): New summary class.
	* vec.h (vec_safe_grow_cleared): New function.

From-SVN: r268979

gcc/ChangeLog

 2019-02-18  Martin Liska  <mliska@suse.cz>
 
+	PR ipa/89306
+	* cgraph.c (symbol_table::create_edge): Set m_summary_id to -1
+	by default.
+	(symbol_table::free_edge): Recycle m_summary_id.
+	* cgraph.h (get_summary_id): New.
+	(symbol_table::release_symbol): Set m_summary_id to -1
+	by default.
+	(symbol_table::allocate_cgraph_symbol): Recycle m_summary_id.
+	* ipa-fnsummary.c (ipa_fn_summary_t): Switch from
+	function_summary to fast_function_summary.
+	* ipa-fnsummary.h (ipa_fn_summary_t): Likewise.
+	* ipa-pure-const.c (class funct_state_summary_t):
+	Switch from function_summary to fast_function_summary.
+	* ipa-reference.c (class ipa_ref_var_info_summary_t): Likewise.
+	(class ipa_ref_opt_summary_t): Switch from function_summary
+	to fast_function_summary.
+	* symbol-summary.h (class function_summary_base): New class
+	that is created from base of former function_summary.
+	(function_summary_base::unregister_hooks): New.
+	(class function_summary): Inherit from function_summary_base.
+	(class call_summary_base): New class
+	that is created from base of former call_summary.
+	(class call_summary): Inherit from call_summary_base.
+	(struct is_same): New.
+	(class fast_function_summary): New summary class.
+	(class fast_call_summary): New summary class.
+	* vec.h (vec_safe_grow_cleared): New function.
+
+2019-02-18  Martin Liska  <mliska@suse.cz>
+
 	* config/i386/i386.c (ix86_get_multilib_abi_name): New function.
 	(TARGET_GET_MULTILIB_ABI_NAME): New macro defined.
 	* doc/tm.texi: Document new target hook.

gcc/cgraph.c

@@ -852,7 +852,10 @@ symbol_table::create_edge (cgraph_node *caller, cgraph_node *callee,
       free_edges = NEXT_FREE_EDGE (edge);
     }
   else
+    {
       edge = ggc_alloc<cgraph_edge> ();
+      edge->m_summary_id = -1;
+    }
 
   edges_count++;
 
@@ -1014,7 +1017,9 @@ symbol_table::free_edge (cgraph_edge *e)
     ggc_free (e->indirect_info);
 
   /* Clear out the edge so we do not dangle pointers.  */
+  int summary_id = e->m_summary_id;
   memset (e, 0, sizeof (*e));
+  e->m_summary_id = summary_id;
   NEXT_FREE_EDGE (e) = free_edges;
   free_edges = e;
   edges_count--;

gcc/cgraph.h

@@ -1302,6 +1302,12 @@ public:
     return m_uid;
   }
 
+  /* Get summary id of the node.  */
+  inline int get_summary_id ()
+  {
+    return m_summary_id;
+  }
+
   /* Record that DECL1 and DECL2 are semantically identical function
      versions.  */
   static void record_function_versions (tree decl1, tree decl2);
@@ -1470,6 +1476,9 @@ private:
   /* Unique id of the node.  */
   int m_uid;
 
+  /* Summary id that is recycled.  */
+  int m_summary_id;
+
   /* Worker for call_for_symbol_and_aliases.  */
   bool call_for_symbol_and_aliases_1 (bool (*callback) (cgraph_node *,
 						        void *),
@@ -1728,6 +1737,12 @@ struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"),
     return m_uid;
   }
 
+  /* Get summary id of the edge.  */
+  inline int get_summary_id ()
+  {
+    return m_summary_id;
+  }
+
   /* Rebuild cgraph edges for current function node.  This needs to be run after
      passes that don't update the cgraph.  */
   static unsigned int rebuild_edges (void);
@@ -1805,6 +1820,9 @@ private:
   /* Unique id of the edge.  */
   int m_uid;
 
+  /* Summary id that is recycled.  */
+  int m_summary_id;
+
   /* Remove the edge from the list of the callers of the callee.  */
   void remove_caller (void);
 
@@ -2051,7 +2069,8 @@ public:
   friend class cgraph_node;
   friend class cgraph_edge;
 
-  symbol_table (): cgraph_max_uid (1), edges_max_uid (1)
+  symbol_table (): cgraph_max_uid (1), cgraph_max_summary_id (0),
+  edges_max_uid (1), edges_max_summary_id (0)
   {
   }
 
@@ -2254,15 +2273,31 @@ public:
   /* Dump symbol table to stderr.  */
   void DEBUG_FUNCTION debug (void);
 
+  /* Assign a new summary ID for the callgraph NODE.  */
+  inline int assign_summary_id (cgraph_node *node)
+  {
+    node->m_summary_id = cgraph_max_summary_id++;
+    return node->m_summary_id;
+  }
+
+  /* Assign a new summary ID for the callgraph EDGE.  */
+  inline int assign_summary_id (cgraph_edge *edge)
+  {
+    edge->m_summary_id = edges_max_summary_id++;
+    return edge->m_summary_id;
+  }
+
   /* Return true if assembler names NAME1 and NAME2 leads to the same symbol
      name.  */
   static bool assembler_names_equal_p (const char *name1, const char *name2);
 
   int cgraph_count;
   int cgraph_max_uid;
+  int cgraph_max_summary_id;
 
   int edges_count;
   int edges_max_uid;
+  int edges_max_summary_id;
 
   symtab_node* GTY(()) nodes;
   asm_node* GTY(()) asmnodes;
@@ -2634,8 +2669,10 @@ symbol_table::release_symbol (cgraph_node *node)
 
   /* Clear out the node to NULL all pointers and add the node to the free
      list.  */
+  int summary_id = node->m_summary_id;
   memset (node, 0, sizeof (*node));
   node->type = SYMTAB_FUNCTION;
+  node->m_summary_id = summary_id;
   SET_NEXT_FREE_NODE (node, free_nodes);
   free_nodes = node;
 }
@@ -2653,7 +2690,10 @@ symbol_table::allocate_cgraph_symbol (void)
       free_nodes = NEXT_FREE_NODE (node);
     }
   else
+    {
       node = ggc_cleared_alloc<cgraph_node> ();
+      node->m_summary_id = -1;
+    }
 
   node->m_uid = cgraph_max_uid++;
   return node;

gcc/ipa-fnsummary.c

@@ -85,8 +85,8 @@ along with GCC; see the file COPYING3.  If not see
 #include "attribs.h"
 
 /* Summaries.  */
-function_summary <ipa_fn_summary *> *ipa_fn_summaries;
-call_summary <ipa_call_summary *> *ipa_call_summaries;
+fast_function_summary <ipa_fn_summary *, va_gc> *ipa_fn_summaries;
+fast_call_summary <ipa_call_summary *, va_heap> *ipa_call_summaries;
 
 /* Edge predicates goes here.  */
 static object_allocator<predicate> edge_predicate_pool ("edge predicates");
@@ -532,7 +532,7 @@ ipa_fn_summary_alloc (void)
 {
   gcc_checking_assert (!ipa_fn_summaries);
   ipa_fn_summaries = ipa_fn_summary_t::create_ggc (symtab);
-  ipa_call_summaries = new ipa_call_summary_t (symtab, false);
+  ipa_call_summaries = new ipa_call_summary_t (symtab);
 }
 
 ipa_call_summary::~ipa_call_summary ()

gcc/ipa-fnsummary.h

@@ -173,16 +173,17 @@ struct GTY(()) ipa_fn_summary
   static const int size_scale = 2;
 };
 
-class GTY((user)) ipa_fn_summary_t: public function_summary <ipa_fn_summary *>
+class GTY((user)) ipa_fn_summary_t:
+  public fast_function_summary <ipa_fn_summary *, va_gc>
 {
 public:
-  ipa_fn_summary_t (symbol_table *symtab, bool ggc):
-    function_summary <ipa_fn_summary *> (symtab, ggc) {}
+  ipa_fn_summary_t (symbol_table *symtab):
+    fast_function_summary <ipa_fn_summary *, va_gc> (symtab) {}
 
   static ipa_fn_summary_t *create_ggc (symbol_table *symtab)
   {
     struct ipa_fn_summary_t *summary = new (ggc_alloc <ipa_fn_summary_t> ())
-      ipa_fn_summary_t(symtab, true);
+      ipa_fn_summary_t (symtab);
     summary->disable_insertion_hook ();
     return summary;
   }
@@ -200,7 +201,8 @@ public:
 			  ipa_fn_summary *src_data, ipa_fn_summary *dst_data);
 };
 
-extern GTY(()) function_summary <ipa_fn_summary *> *ipa_fn_summaries;
+extern GTY(()) fast_function_summary <ipa_fn_summary *, va_gc>
+  *ipa_fn_summaries;
 
 /* Information kept about callgraph edges.  */
 struct ipa_call_summary
@@ -236,11 +238,11 @@ struct ipa_call_summary
   bool is_return_callee_uncaptured;
 };
 
-class ipa_call_summary_t: public call_summary <ipa_call_summary *>
+class ipa_call_summary_t: public fast_call_summary <ipa_call_summary *, va_heap>
 {
 public:
-  ipa_call_summary_t (symbol_table *symtab, bool ggc):
-    call_summary <ipa_call_summary *> (symtab, ggc) {}
+  ipa_call_summary_t (symbol_table *symtab):
+    fast_call_summary <ipa_call_summary *, va_heap> (symtab) {}
 
   /* Hook that is called by summary when an edge is duplicated.  */
   virtual void duplicate (cgraph_edge *src, cgraph_edge *dst,
@@ -248,7 +250,7 @@ public:
 			  ipa_call_summary *dst_data);
 };
 
-extern call_summary <ipa_call_summary *> *ipa_call_summaries;
+extern fast_call_summary <ipa_call_summary *, va_heap> *ipa_call_summaries;
 
 /* In ipa-fnsummary.c  */
 void ipa_debug_fn_summary (struct cgraph_node *);

gcc/ipa-pure-const.c

@@ -128,11 +128,12 @@ typedef struct funct_state_d * funct_state;
    possibility that it may be desirable to move this to the cgraph
    local info.  */
 
-class funct_state_summary_t: public function_summary <funct_state_d *>
+class funct_state_summary_t:
+  public fast_function_summary <funct_state_d *, va_heap>
 {
 public:
   funct_state_summary_t (symbol_table *symtab):
-    function_summary <funct_state_d *> (symtab) {}
+    fast_function_summary <funct_state_d *, va_heap> (symtab) {}
 
   virtual void insert (cgraph_node *, funct_state_d *state);
   virtual void duplicate (cgraph_node *src_node, cgraph_node *dst_node,

gcc/ipa-reference.c

@@ -110,23 +110,22 @@ static bitmap_obstack local_info_obstack;
 /* Obstack holding global analysis live forever.  */
 static bitmap_obstack optimization_summary_obstack;
 
-class ipa_ref_var_info_summary_t: public function_summary
-			  <ipa_reference_vars_info_d *>
+class ipa_ref_var_info_summary_t: public fast_function_summary
+			  <ipa_reference_vars_info_d *, va_heap>
 {
 public:
   ipa_ref_var_info_summary_t (symbol_table *symtab):
-    function_summary <ipa_reference_vars_info_d *> (symtab) {}
+    fast_function_summary <ipa_reference_vars_info_d *, va_heap> (symtab) {}
 };
 
 static ipa_ref_var_info_summary_t *ipa_ref_var_info_summaries = NULL;
 
-class ipa_ref_opt_summary_t: public function_summary
-			     <ipa_reference_optimization_summary_d *>
+class ipa_ref_opt_summary_t: public fast_function_summary
+			     <ipa_reference_optimization_summary_d *, va_heap>
 {
 public:
   ipa_ref_opt_summary_t (symbol_table *symtab):
-    function_summary <ipa_reference_optimization_summary_d *> (symtab) {}
-
+    fast_function_summary <ipa_reference_optimization_summary_d *, va_heap> (symtab) {}
 
   virtual void remove (cgraph_node *src_node,
 		       ipa_reference_optimization_summary_d *data);

gcc/vec.h

@@ -732,6 +732,17 @@ vec_safe_grow_cleared (vec<T, A, vl_embed> *&v, unsigned len CXX_MEM_STAT_INFO)
 }
 
 
+/* Assume V is not NULL.  */
+
+template<typename T>
+inline void
+vec_safe_grow_cleared (vec<T, va_heap, vl_ptr> *&v,
+		       unsigned len CXX_MEM_STAT_INFO)
+{
+  v->safe_grow_cleared (len);
+}
+
+
 /* If V is NULL return false, otherwise return V->iterate(IX, PTR).  */
 template<typename T, typename A>
 inline bool