Makefile.in (LTO_STREAMER_H): Add pointer-set.h dependency.

2013-06-18  Richard Biener  <rguenther@suse.de>

	* Makefile.in (LTO_STREAMER_H): Add pointer-set.h dependency.
	* lto-streamer.h: Include pointer-set.h.
	(struct lto_decl_slot): Remove.
	(struct lto_tree_ref_encoder): Make tree_hash_table a pointer-map.
	Remove next_index entry.
	(lto_hash_decl_slot_node, lto_eq_decl_slot_node,
	lto_hash_type_slot_node, lto_eq_type_slot_node): Remove.
	(lto_init_tree_ref_encoder): Adjust.
	(lto_destroy_tree_ref_encoder): Likewise.
	* lto-section-out.c (lto_hash_decl_slot_node, lto_eq_decl_slot_node,
	lto_hash_type_slot_node, lto_eq_type_slot_node): Remove.
	(lto_output_decl_index): Adjust.
	(lto_new_out_decl_state): Likewise.
	(lto_record_function_out_decl_state): Likewise.
	* lto-streamer-out.c (copy_function): Likewise.

From-SVN: r200171

5 files changed, 32 insertions, 104 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4f0abd3..7e771b5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,23 @@
 2013-06-18  Richard Biener  <rguenther@suse.de>
 
+	* Makefile.in (LTO_STREAMER_H): Add pointer-set.h dependency.
+	* lto-streamer.h: Include pointer-set.h.
+	(struct lto_decl_slot): Remove.
+	(struct lto_tree_ref_encoder): Make tree_hash_table a pointer-map.
+	Remove next_index entry.
+	(lto_hash_decl_slot_node, lto_eq_decl_slot_node,
+	lto_hash_type_slot_node, lto_eq_type_slot_node): Remove.
+	(lto_init_tree_ref_encoder): Adjust.
+	(lto_destroy_tree_ref_encoder): Likewise.
+	* lto-section-out.c (lto_hash_decl_slot_node, lto_eq_decl_slot_node,
+	lto_hash_type_slot_node, lto_eq_type_slot_node): Remove.
+	(lto_output_decl_index): Adjust.
+	(lto_new_out_decl_state): Likewise.
+	(lto_record_function_out_decl_state): Likewise.
+	* lto-streamer-out.c (copy_function): Likewise.
+
+2013-06-18  Richard Biener  <rguenther@suse.de>
+
 	* Makefile.in (cgraphunit.o): Add $(CFGLOOP_H) dependency.
 	* cgraphunit.c: Include cfgloop.h.
 	(init_lowered_empty_function): Initialize the loop tree.
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index ea18292..d5121f3 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -967,7 +967,7 @@ LRA_INT_H = lra.h $(BITMAP_H) $(RECOG_H) $(INSN_ATTR_H) insn-codes.h \
 DBGCNT_H = dbgcnt.h dbgcnt.def
 LTO_STREAMER_H = lto-streamer.h $(LINKER_PLUGIN_API_H) $(TARGET_H) \
 		$(CGRAPH_H) $(VEC_H) $(HASH_TABLE_H) $(TREE_H) $(GIMPLE_H) \
-		$(GCOV_IO_H) $(DIAGNOSTIC_H) alloc-pool.h
+		$(GCOV_IO_H) $(DIAGNOSTIC_H) alloc-pool.h pointer-set.h
 DATA_STREAMER_H = data-streamer.h $(VEC_H) $(LTO_STREAMER_H)
 GIMPLE_STREAMER_H = gimple-streamer.h $(LTO_STREAMER_H) $(BASIC_BLOCK_H) \
 		    $(FUNCTION_H)
diff --git a/gcc/lto-section-out.c b/gcc/lto-section-out.c
index 7997c45..4b44408 100644
--- a/gcc/lto-section-out.c
+++ b/gcc/lto-section-out.c
@@ -48,59 +48,7 @@ static vec<lto_out_decl_state_ptr> decl_state_stack;
    generate the decl directory later. */
 
 vec<lto_out_decl_state_ptr> lto_function_decl_states;
-/* Returns a hash code for P.  */
 
-hashval_t
-lto_hash_decl_slot_node (const void *p)
-{
-  const struct lto_decl_slot *ds = (const struct lto_decl_slot *) p;
-
-  /*
-    return (hashval_t) DECL_UID (ds->t);
-  */
-  return (hashval_t) TREE_HASH (ds->t);
-}
-
-
-/* Returns nonzero if P1 and P2 are equal.  */
-
-int
-lto_eq_decl_slot_node (const void *p1, const void *p2)
-{
-  const struct lto_decl_slot *ds1 =
-    (const struct lto_decl_slot *) p1;
-  const struct lto_decl_slot *ds2 =
-    (const struct lto_decl_slot *) p2;
-
-  /*
-  return DECL_UID (ds1->t) == DECL_UID (ds2->t);
-  */
-  return ds1->t == ds2->t;
-}
-
-
-/* Returns a hash code for P.  */
-
-hashval_t
-lto_hash_type_slot_node (const void *p)
-{
-  const struct lto_decl_slot *ds = (const struct lto_decl_slot *) p;
-  return (hashval_t) TYPE_UID (ds->t);
-}
-
-
-/* Returns nonzero if P1 and P2 are equal.  */
-
-int
-lto_eq_type_slot_node (const void *p1, const void *p2)
-{
-  const struct lto_decl_slot *ds1 =
-    (const struct lto_decl_slot *) p1;
-  const struct lto_decl_slot *ds2 =
-    (const struct lto_decl_slot *) p2;
-
-  return TYPE_UID (ds1->t) == TYPE_UID (ds2->t);
-}
 
 /*****************************************************************************
    Output routines shared by all of the serialization passes.
@@ -278,29 +226,19 @@ lto_output_decl_index (struct lto_output_stream *obs,
 		       tree name, unsigned int *this_index)
 {
   void **slot;
-  struct lto_decl_slot d_slot;
   int index;
   bool new_entry_p = FALSE;
 
-  d_slot.t = name;
-  slot = htab_find_slot (encoder->tree_hash_table, &d_slot, INSERT);
+  slot = pointer_map_insert (encoder->tree_hash_table, name);
   if (*slot == NULL)
     {
-      struct lto_decl_slot *new_slot
-	= (struct lto_decl_slot *) xmalloc (sizeof (struct lto_decl_slot));
-      index = encoder->next_index++;
-
-      new_slot->t = name;
-      new_slot->slot_num = index;
-      *slot = new_slot;
+      index = encoder->trees.length ();
+      *slot = (void *)(uintptr_t) index;
       encoder->trees.safe_push (name);
       new_entry_p = TRUE;
     }
   else
-    {
-      struct lto_decl_slot *old_slot = (struct lto_decl_slot *)*slot;
-      index = old_slot->slot_num;
-    }
+    index = (uintptr_t) *slot;
 
   if (obs)
     streamer_write_uhwi_stream (obs, index);
@@ -440,23 +378,9 @@ lto_new_out_decl_state (void)
 {
   struct lto_out_decl_state *state = XCNEW (struct lto_out_decl_state);
   int i;
-  htab_hash hash_fn;
-  htab_eq eq_fn;
 
   for (i = 0; i < LTO_N_DECL_STREAMS; i++)
-    {
-      if (i == LTO_DECL_STREAM_TYPE)
-	{
-	  hash_fn = lto_hash_type_slot_node;
-	  eq_fn = lto_eq_type_slot_node;
-	}
-      else
-	{
-	  hash_fn = lto_hash_decl_slot_node;
-	  eq_fn = lto_eq_decl_slot_node;
-	}
-      lto_init_tree_ref_encoder (&state->streams[i], hash_fn, eq_fn);
-    }
+    lto_init_tree_ref_encoder (&state->streams[i]);
 
   return state;
 }
@@ -514,7 +438,7 @@ lto_record_function_out_decl_state (tree fn_decl,
   for (i = 0; i < LTO_N_DECL_STREAMS; i++)
     if (state->streams[i].tree_hash_table)
       {
-	htab_delete (state->streams[i].tree_hash_table);
+	pointer_map_destroy (state->streams[i].tree_hash_table);
 	state->streams[i].tree_hash_table = NULL;
       }
   state->fn_decl = fn_decl;
diff --git a/gcc/lto-streamer-out.c b/gcc/lto-streamer-out.c
index b59bc8f..8fe7bd8 100644
--- a/gcc/lto-streamer-out.c
+++ b/gcc/lto-streamer-out.c
@@ -1922,9 +1922,9 @@ copy_function (struct cgraph_node *node)
 	 So just copy the vector.  All the encoders in the in state
 	 must be empty where we reach here. */
       gcc_assert (lto_tree_ref_encoder_size (encoder) == 0);
+      encoder->trees.reserve_exact (n);
       for (j = 0; j < n; j++)
 	encoder->trees.safe_push (trees[j]);
-      encoder->next_index = n;
     }
 
   lto_free_section_data (file_data, LTO_section_function_body, name,
diff --git a/gcc/lto-streamer.h b/gcc/lto-streamer.h
index 58a7f58..a3e2918 100644
--- a/gcc/lto-streamer.h
+++ b/gcc/lto-streamer.h
@@ -33,6 +33,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "alloc-pool.h"
 #include "gcov-io.h"
 #include "diagnostic.h"
+#include "pointer-set.h"
 
 /* Define when debugging the LTO streamer.  This causes the writer
    to output the numeric value for the memory address of the tree node
@@ -474,21 +475,12 @@ struct GTY(()) lto_tree_ref_table
 };
 
 
-/* Mapping between trees and slots in an array.  */
-struct lto_decl_slot
-{
-  tree t;
-  int slot_num;
-};
-
-
 /* The lto_tree_ref_encoder struct is used to encode trees into indices. */
 
 struct lto_tree_ref_encoder
 {
-  htab_t tree_hash_table;	/* Maps pointers to indices. */
-  unsigned int next_index;	/* Next available index. */
-  vec<tree> trees;	/* Maps indices to pointers. */
+  pointer_map_t *tree_hash_table;	/* Maps pointers to indices. */
+  vec<tree> trees;			/* Maps indices to pointers. */
 };
 
 
@@ -788,10 +780,6 @@ extern void lto_value_range_error (const char *,
 				   HOST_WIDE_INT) ATTRIBUTE_NORETURN;
 
 /* In lto-section-out.c  */
-extern hashval_t lto_hash_decl_slot_node (const void *);
-extern int lto_eq_decl_slot_node (const void *, const void *);
-extern hashval_t lto_hash_type_slot_node (const void *);
-extern int lto_eq_type_slot_node (const void *, const void *);
 extern void lto_begin_section (const char *, bool);
 extern void lto_end_section (void);
 extern void lto_write_stream (struct lto_output_stream *);
@@ -1007,11 +995,9 @@ lto_tag_check_range (enum LTO_tags actual, enum LTO_tags tag1,
 
 /* Initialize an lto_out_decl_buffer ENCODER.  */
 static inline void
-lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder,
-			   htab_hash hash_fn, htab_eq eq_fn)
+lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder)
 {
-  encoder->tree_hash_table = htab_create (37, hash_fn, eq_fn, free);
-  encoder->next_index = 0;
+  encoder->tree_hash_table = pointer_map_create ();
   encoder->trees.create (0);
 }
 
@@ -1023,7 +1009,7 @@ lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder)
 {
   /* Hash table may be delete already.  */
   if (encoder->tree_hash_table)
-    htab_delete (encoder->tree_hash_table);
+    pointer_map_destroy (encoder->tree_hash_table);
   encoder->trees.release ();
 }