From: Jan Hubicka <hubicka@ucw.cz>
Date: Sun, 8 Dec 2019 16:57:20 +0000 (+0100)
Subject: Fix tp_first_run update in split_function.
X-Git-Tag: upstream/12.2.0~19790
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f514d0199a8ff8a0275f7b1081196f35807216e8;p=platform%2Fupstream%2Fgcc.git

Fix tp_first_run update in split_function.

The value 0 in tp_first_run is special meaing that profile is unknown.  We
should not set it to 1.

	* ipa-split.c (split_function): Preserve 0 tp_first_run.

From-SVN: r279091
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f051c23..416e7d6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2019-12-07  Jan Hubicka  <hubicka@ucw.cz>
 
+	* ipa-split.c (split_function): Preserve 0 tp_first_run.
+
+2019-12-07  Jan Hubicka  <hubicka@ucw.cz>
+
 	* ipa-inline-analysis.c (do_estimate_edge_time): Silence overactive
 	sanity check.
 
diff --git a/gcc/ipa-split.c b/gcc/ipa-split.c
index 2310c1a..81a2448 100644
--- a/gcc/ipa-split.c
+++ b/gcc/ipa-split.c
@@ -1369,7 +1369,8 @@ split_function (basic_block return_bb, class split_point *split_point,
 
 
   /* Let's take a time profile for splitted function.  */
-  node->tp_first_run = cur_node->tp_first_run + 1;
+  if (cur_node->tp_first_run)
+    node->tp_first_run = cur_node->tp_first_run + 1;
 
   /* For usual cloning it is enough to clear builtin only when signature
      changes.  For partial inlining we however cannot expect the part