From 0d0f5dc54f1d0bb984361a48d4a525621b8052c5 Mon Sep 17 00:00:00 2001
From: kyukhin <kyukhin@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 23 Sep 2014 08:26:34 +0000
Subject: [PATCH] gcc/ 	* cfgcleanup.c (try_optimize_cfg): Do not remove label
 	with LABEL_PRESERVE_P flag set.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215498 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog    | 5 +++++
 gcc/cfgcleanup.c | 1 +
 2 files changed, 6 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca76b17..61de16a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-09-23  Ilya Enkovich  <ilya.enkovich@intel.com>
+
+	* cfgcleanup.c (try_optimize_cfg): Do not remove label
+	with LABEL_PRESERVE_P flag set.
+
 2014-09-23  Alexander Ivchenko  <alexander.ivchenko@intel.com>
 	    Maxim Kuznetsov  <maxim.kuznetsov@intel.com>
 	    Anna Tikhonova  <anna.tikhonova@intel.com>
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c
index a008168..9325ea0 100644
--- a/gcc/cfgcleanup.c
+++ b/gcc/cfgcleanup.c
@@ -2701,6 +2701,7 @@ try_optimize_cfg (int mode)
 		  && (single_pred_edge (b)->flags & EDGE_FALLTHRU)
 		  && !(single_pred_edge (b)->flags & EDGE_COMPLEX)
 		  && LABEL_P (BB_HEAD (b))
+		  && !LABEL_PRESERVE_P (BB_HEAD (b))
 		  /* If the previous block ends with a branch to this
 		     block, we can't delete the label.  Normally this
 		     is a condjump that is yet to be simplified, but
-- 
2.7.4