[google] change dump_inline_decisions to make it print more useful and better looking info

[Dehao Chen]

Hi,

This patch makes the -fopt-info print more concise info:
1. only inline decisions after einline are printed
2. print in a more compact format

Bootstrapped with no problem.

Is it okay for google-4_6 and google-main branch?

Thanks,
Dehao

gcc/ChangeLog.google-4_6
2011-12-30  Dehao Chen  <de...@google.com>

        * ipa-inline.c (dump_inline_decision): Print more concise info when
        dumping inline decisions.

Index: gcc/ipa-inline.c
===================================================================
--- gcc/ipa-inline.c    (revision 182739)
+++ gcc/ipa-inline.c    (working copy)
@@ -303,26 +303,19 @@
   char *buf;
   size_t buf_size;
   const char *bfd_name = lang_hooks.dwarf_name (node->decl, 0);
-  const char *count_text = "count=";
-  const char *max_count_text = "max_count=";

   if (!bfd_name)
     bfd_name = "unknown";

   buf_size = strlen (bfd_name) + 1;
   if (flag_opt_info >= OPT_INFO_MED)
-    buf_size += (strlen (count_text) + MAX_INT_LENGTH + 1);
-  if (flag_opt_info >= OPT_INFO_MAX)
-    buf_size += (strlen (max_count_text) + MAX_INT_LENGTH + 1);
+    buf_size += (2 * MAX_INT_LENGTH + 5);
   buf = (char *) xmalloc (buf_size);

   strcpy (buf, bfd_name);
   if (flag_opt_info >= OPT_INFO_MED)
-    sprintf (buf, "%s,%s"HOST_WIDEST_INT_PRINT_DEC,
-            buf, count_text, node->count);
-  if (flag_opt_info >= OPT_INFO_MAX)
-    sprintf (buf, "%s,%s"HOST_WIDEST_INT_PRINT_DEC,
-            buf, max_count_text, node->max_bb_count);
+    sprintf (buf, "("HOST_WIDEST_INT_PRINT_DEC", "HOST_WIDEST_INT_PRINT_DEC")",
+            node->count, node->max_bb_count);
   return buf;
 }

@@ -369,6 +362,14 @@
   const char *inline_chain_text;
   const char *call_count_text;
   struct cgraph_node *final_caller = edge->caller;
+  tree decl = edge->caller->decl;
+
+  if (decl)
+    {
+      struct function *fn = DECL_STRUCT_FUNCTION (decl);
+      if (!fn || !fn->always_inline_functions_inlined)
+       return;
+    }

   if (final_caller->global.inlined_to != NULL)
     inline_chain_text = cgraph_node_call_chain (final_caller, &final_caller);