cgraph.c (dump_graphviz): New function.

	* cgraph.c (dump_graphviz): New function.
	* cgraph.h (dump_graphviz): New function.
	* symtab.c (dump_graphviz): New function.

	* lang.opt (flag_dump_callgraph): New flag.
	* lto-dump.c (dump_symtab_graphviz): New function.
	(dump_tool_help): New option.
	(lto_main): Handle graphviz dumping.

From-SVN: r273708

7 files changed, 90 insertions, 20 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index faa3bde..eda95a0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-07-02  Giuliano Belinassi  <giuliano.belinassi@usp.br>
+
+	* cgraph.c (dump_graphviz): New function.
+	* cgraph.h (dump_graphviz): New function.
+	* symtab.c (dump_graphviz): New function.
+
 2019-07-22  Sylvia Taylor  <sylvia.taylor@arm.com>
 
 	* config/aarch64/aarch64-simd.md
diff --git a/gcc/cgraph.c b/gcc/cgraph.c
index a7e3bcf..477db38 100644
--- a/gcc/cgraph.c
+++ b/gcc/cgraph.c
@@ -2204,6 +2204,22 @@ cgraph_node::dump (FILE *f)
     }
 }
 
+/* Dump call graph node to file F in graphviz format.  */
+
+void
+cgraph_node::dump_graphviz (FILE *f)
+{
+  cgraph_edge *edge;
+
+  for (edge = callees; edge; edge = edge->next_callee)
+    {
+      cgraph_node *callee = edge->callee;
+
+      fprintf (f, "\t\"%s\" -> \"%s\"\n", name (), callee->name ());
+    }
+}
+
+
 /* Dump call graph node NODE to stderr.  */
 
 DEBUG_FUNCTION void
diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index fa5224f..a7c97de 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -135,6 +135,9 @@ public:
   /* Dump symtab node to F.  */
   void dump (FILE *f);
 
+  /* Dump symtab callgraph in graphviz format.  */
+  void dump_graphviz (FILE *f);
+
   /* Dump symtab node to stderr.  */
   void DEBUG_FUNCTION debug (void);
 
@@ -1106,6 +1109,9 @@ struct GTY((tag ("SYMTAB_FUNCTION"))) cgraph_node : public symtab_node
   /* Dump call graph node to file F.  */
   void dump (FILE *f);
 
+  /* Dump call graph node to file F.  */
+  void dump_graphviz (FILE *f);
+
   /* Dump call graph node to stderr.  */
   void DEBUG_FUNCTION debug (void);
 
@@ -2282,6 +2288,9 @@ public:
   /* Dump symbol table to F.  */
   void dump (FILE *f);
 
+  /* Dump symbol table to F in graphviz format.  */
+  void dump_graphviz (FILE *f);
+
   /* Dump symbol table to stderr.  */
   void DEBUG_FUNCTION debug (void);
 
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 22e7739..c18b2c4 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,10 @@
+2019-07-22  Giuliano Belinassi  <giuliano.belinassi@usp.br>
+
+	* lang.opt (flag_dump_callgraph): New flag.
+	* lto-dump.c (dump_symtab_graphviz): New function.
+	(dump_tool_help): New option.
+	(lto_main): Handle graphviz dumping.
+
 2019-07-18  Jan Hubicka  <hubicka@ucw.cz>
 
 	* lto-common.c (gimple_register_canonical_type_1): Do not look for
diff --git a/gcc/lto/lang.opt b/gcc/lto/lang.opt
index 5bacef3..c62dd5a 100644
--- a/gcc/lto/lang.opt
+++ b/gcc/lto/lang.opt
@@ -127,6 +127,9 @@ help
 LTODump Var(flag_lto_dump_tool_help)
 Dump the dump tool command line options.
 
+callgraph
+LTODump Var(flag_dump_callgraph)
+Dump the symtab callgraph.
 
 fresolution=
 LTO Joined
diff --git a/gcc/lto/lto-dump.c b/gcc/lto/lto-dump.c
index 262f9f2..74d99b5 100644
--- a/gcc/lto/lto-dump.c
+++ b/gcc/lto/lto-dump.c
@@ -215,6 +215,12 @@ void dump_list_variables (void)
     }
 }
 
+/* Dump symbol table in graphviz format.  */
+void dump_symtab_graphviz (void)
+{
+  symtab->dump_graphviz (stdout);
+}
+
 /* Dump symbol list.  */
 
 void dump_list (void)
@@ -269,26 +275,27 @@ void dump_body ()
 /* List of command line options for dumping.  */
 void dump_tool_help ()
 {
-  printf ("Usage: lto-dump [OPTION]... SUB_COMMAND [OPTION]...\n\n");
-  printf ("LTO dump tool command line options.\n\n");
-  printf ("  -list [options]           Dump the symbol list.\n");
-  printf ("    -demangle               Dump the demangled output.\n");
-  printf ("    -defined-only           Dump only the defined symbols.\n");
-  printf ("    -print-value            Dump initial values of the "
-	  "variables.\n");
-  printf ("    -name-sort              Sort the symbols alphabetically.\n");
-  printf ("    -size-sort              Sort the symbols according to size.\n");
-  printf ("    -reverse-sort           Dump the symbols in reverse order.\n");
-  printf ("  -symbol=                  Dump the details of specific symbol.\n");
-  printf ("  -objects                  Dump the details of LTO objects.\n");
-  printf ("  -type-stats               Dump statistics of tree types.\n");
-  printf ("  -tree-stats               Dump statistics of trees.\n");
-  printf ("  -gimple-stats             Dump statistics of gimple "
-	  "statements.\n");
-  printf ("  -dump-body=               Dump the specific gimple body.\n");
-  printf ("  -dump-level=              Deciding the optimization level "
-	  "of body.\n");
-  printf ("  -help                     Display the dump tool help.\n");
+  const char *msg =
+    "Usage: lto-dump [OPTION]... SUB_COMMAND [OPTION]...\n\n"
+    "LTO dump tool command line options.\n\n"
+    "  -list [options]           Dump the symbol list.\n"
+    "    -demangle               Dump the demangled output.\n"
+    "    -defined-only           Dump only the defined symbols.\n"
+    "    -print-value            Dump initial values of the variables.\n"
+    "    -name-sort              Sort the symbols alphabetically.\n"
+    "    -size-sort              Sort the symbols according to size.\n"
+    "    -reverse-sort           Dump the symbols in reverse order.\n"
+    "  -symbol=                  Dump the details of specific symbol.\n"
+    "  -objects                  Dump the details of LTO objects.\n"
+    "  -callgraph                Dump the callgraph in graphviz format.\n"
+    "  -type-stats               Dump statistics of tree types.\n"
+    "  -tree-stats               Dump statistics of trees.\n"
+    "  -gimple-stats             Dump statistics of gimple statements.\n"
+    "  -dump-body=               Dump the specific gimple body.\n"
+    "  -dump-level=              Deciding the optimization level of body.\n"
+    "  -help                     Display the dump tool help.\n";
+
+  fputs (msg, stdout);
   return;
 }
 
@@ -362,4 +369,9 @@ lto_main (void)
       dump_body ();
       return;
     }
+  else if (flag_dump_callgraph)
+    {
+      dump_symtab_graphviz ();
+      return;
+    }
 }
diff --git a/gcc/symtab.c b/gcc/symtab.c
index b1589ea..63e2820 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -956,6 +956,13 @@ symtab_node::dump (FILE *f)
 }
 
 void
+symtab_node::dump_graphviz (FILE *f)
+{
+  if (cgraph_node *cnode = dyn_cast <cgraph_node *> (this))
+    cnode->dump_graphviz (f);
+}
+
+void
 symbol_table::dump (FILE *f)
 {
   symtab_node *node;
@@ -964,6 +971,16 @@ symbol_table::dump (FILE *f)
     node->dump (f);
 }
 
+void
+symbol_table::dump_graphviz (FILE *f)
+{
+  symtab_node *node;
+  fprintf (f, "digraph symtab {\n");
+  FOR_EACH_SYMBOL (node)
+    node->dump_graphviz (f);
+  fprintf (f, "}\n");
+}
+
 DEBUG_FUNCTION void
 symbol_table::debug (void)
 {