From: Richard Biener <rguenther@suse.de>
Date: Fri, 1 Feb 2019 08:07:35 +0000 (+0000)
Subject: re PR rtl-optimization/88593 (cleanup_cfg may make cached dominance info stale)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=09822562e4f196d209b1a5a59609ea9e9cdb892f;p=gcc.git

re PR rtl-optimization/88593 (cleanup_cfg may make cached dominance info stale)

2019-02-01  Richard Biener  <rguenth@suse.de>

	PR rtl-optimization/88593
	* mode-switching.c (optimize_mode_switching): Free dominators before
	calling cleanup_cfg.

From-SVN: r268442
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d4ee2a2754c..6b3437fe7b0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-02-01  Richard Biener  <rguenth@suse.de>
+
+	PR rtl-optimization/88593
+	* mode-switching.c (optimize_mode_switching): Free dominators before
+	calling cleanup_cfg.
+
 2019-02-01  Bin Cheng  <bin.cheng@linux.alibaba.com>
 
 	PR tree-optimization/88932
diff --git a/gcc/mode-switching.c b/gcc/mode-switching.c
index ef6f6e1984c..2ff21a40081 100644
--- a/gcc/mode-switching.c
+++ b/gcc/mode-switching.c
@@ -856,7 +856,10 @@ optimize_mode_switching (void)
     commit_edge_insertions ();
 
   if (targetm.mode_switching.entry && targetm.mode_switching.exit)
-    cleanup_cfg (CLEANUP_NO_INSN_DEL);
+    {
+      free_dominance_info (CDI_DOMINATORS);
+      cleanup_cfg (CLEANUP_NO_INSN_DEL);
+    }
   else if (!need_commit && !emitted)
     return 0;