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

3 files changed, 42 insertions, 20 deletions

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;
+    }
 }