[PATCH] Fix dumps for IPA passes

[Sharad Singhai <singhai at google dot com>]

Hi,

This patch fixes a problem with the new dump infrastructure as discussed in
http://gcc.gnu.org/ml/gcc/2012-10/msg00227.html.

It removes a check for current_function_decl so that dumps will work
for IPA passes. In addition, this patch also adds a new inline
function to check if any dump files are available.

I have bootstrapped and tested on x86_64. Okay for trunk?

Thanks,
Sharad


2012-10-18  Sharad Singhai  <singhai@google.com>

* dumpfile.c (dump_enabled_phase): New function.
(dump_enabled_p): Rename to dump_enabled_phase. Update all callers.
A new function with the same name to check if any of the dump files
is available.
(dump_kind_p): Remove check for current_function_decl. Add check for
dumpfile and alt_dump_file.
* dumpfile.h: Add declaration of dump_enabled_p.

Index: dumpfile.c
===================================================================
--- dumpfile.c (revision 192549)
+++ dumpfile.c (working copy)
@@ -35,7 +35,7 @@ static int alt_flags;                /* current op
 static FILE *alt_dump_file = NULL;

 static void dump_loc (int, FILE *, source_location);
-static int dump_enabled_p (int);
+static int dump_enabled_phase (int);
 static FILE *dump_open_alternate_stream (struct dump_file_info *);

 /* Table of tree dump switches. This must be consistent with the
@@ -380,7 +380,7 @@ dump_start (int phase, int *flag_ptr)
   char *name;
   struct dump_file_info *dfi;
   FILE *stream;
-  if (phase == TDI_none || !dump_enabled_p (phase))
+  if (phase == TDI_none || !dump_enabled_phase (phase))
     return 0;

   dfi = get_dump_file_info (phase);
@@ -461,7 +461,7 @@ dump_begin (int phase, int *flag_ptr)
   struct dump_file_info *dfi;
   FILE *stream;

-  if (phase == TDI_none || !dump_enabled_p (phase))
+  if (phase == TDI_none || !dump_enabled_phase (phase))
     return NULL;

   name = get_dump_file_name (phase);
@@ -493,8 +493,8 @@ dump_begin (int phase, int *flag_ptr)
    If PHASE is TDI_tree_all, return nonzero if any dump is enabled for
    any phase.  */

-int
-dump_enabled_p (int phase)
+static int
+dump_enabled_phase (int phase)
 {
   if (phase == TDI_tree_all)
     {
@@ -514,6 +514,14 @@ dump_begin (int phase, int *flag_ptr)
     }
 }

+/* Return true if any of the dumps are enabled, false otherwise. */
+
+inline bool
+dump_enabled_p (void)
+{
+  return (dump_file || alt_dump_file);
+}
+
 /* Returns nonzero if tree dump PHASE has been initialized.  */

 int
@@ -834,9 +842,8 @@ opt_info_switch_p (const char *arg)
 bool
 dump_kind_p (int msg_type)
 {
-  if (!current_function_decl)
-    return 0;
-  return ((msg_type & pflags) || (msg_type & alt_flags));
+  return (dump_file && (msg_type & pflags))
+    || (alt_dump_file && (msg_type & alt_flags));
 }

 /* Print basic block on the dump streams.  */
Index: dumpfile.h
===================================================================
--- dumpfile.h (revision 192549)
+++ dumpfile.h (working copy)
@@ -121,6 +121,7 @@ extern int dump_switch_p (const char *);
 extern int opt_info_switch_p (const char *);
 extern const char *dump_flag_name (int);
 extern bool dump_kind_p (int);
+extern inline bool dump_enabled_p (void);
 extern void dump_printf (int, const char *, ...) ATTRIBUTE_PRINTF_2;
 extern void dump_printf_loc (int, source_location,
                              const char *, ...) ATTRIBUTE_PRINTF_3;