From: Jan Hubicka <hubicka@ucw.cz>
Date: Mon, 12 Oct 2015 06:08:06 +0000 (+0200)
Subject: cgraphbuild.c (compute_call_stmt_bb_frequency): Use counts when these are more inform... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5330a79d3409f2e0f0dfd314414e53e29136cf89;p=gcc.git

cgraphbuild.c (compute_call_stmt_bb_frequency): Use counts when these are more informative.


	* cgraphbuild.c (compute_call_stmt_bb_frequency): Use
	counts when these are more informative.

From-SVN: r228703
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 931dedeec60..5d38bf67c98 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-10-11  Jan Hubicka  <hubicka@ucw.cz>
+
+	* cgraphbuild.c (compute_call_stmt_bb_frequency): Use
+	counts when these are more informative.
+
 2015-10-11  Jan Hubicka  <hubicka@ucw.cz>
 
 	* tree-profile.c (tree_profiling): Do not clear
diff --git a/gcc/cgraphbuild.c b/gcc/cgraphbuild.c
index 33b01be83ac..a7b4af6d9fb 100644
--- a/gcc/cgraphbuild.c
+++ b/gcc/cgraphbuild.c
@@ -202,15 +202,21 @@ compute_call_stmt_bb_frequency (tree decl, basic_block bb)
 {
   int entry_freq = ENTRY_BLOCK_PTR_FOR_FN
   		     (DECL_STRUCT_FUNCTION (decl))->frequency;
-  int freq = bb->frequency;
+  gcov_type entry_count = ENTRY_BLOCK_PTR_FOR_FN
+			    (DECL_STRUCT_FUNCTION (decl))->count;
+  gcov_type freq = bb->frequency;
 
   if (profile_status_for_fn (DECL_STRUCT_FUNCTION (decl)) == PROFILE_ABSENT)
     return CGRAPH_FREQ_BASE;
 
-  if (!entry_freq)
-    entry_freq = 1, freq++;
-
-  freq = freq * CGRAPH_FREQ_BASE / entry_freq;
+  if (entry_count > entry_freq)
+    freq = RDIV (bb->count * CGRAPH_FREQ_BASE, entry_count);
+  else
+    {
+      if (!entry_freq)
+        entry_freq = 1, freq++;
+      freq = RDIV (freq * CGRAPH_FREQ_BASE, entry_freq);
+    }
   if (freq > CGRAPH_FREQ_MAX)
     freq = CGRAPH_FREQ_MAX;