From: Richard Biener <rguenther@suse.de>
Date: Tue, 30 Jul 2019 08:57:35 +0000 (+0000)
Subject: re PR tree-optimization/91291 (gcc.dg/20020312-2.c FAILs)
X-Git-Tag: misc/cutover-git~3746
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8c955a4b9ca99dc1557dd4547068abf7a0838c8f;p=thirdparty%2Fgcc.git

re PR tree-optimization/91291 (gcc.dg/20020312-2.c FAILs)

2019-07-30  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91291
	* tree-ssa-sccvn.c (rpo_elim::eliminate_push_avail): Ignore
	constant values.

From-SVN: r273903
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f69542dc536e..1f71491727f1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-07-30  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/91291
+	* tree-ssa-sccvn.c (rpo_elim::eliminate_push_avail): Ignore
+	constant values.
+
 2019-07-30  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/91216
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index a2cb237293e4..23f7400f2e92 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -6253,7 +6253,8 @@ void
 rpo_elim::eliminate_push_avail (basic_block bb, tree leader)
 {
   tree valnum = VN_INFO (leader)->valnum;
-  if (valnum == VN_TOP)
+  if (valnum == VN_TOP
+      || is_gimple_min_invariant (valnum))
     return;
   if (dump_file && (dump_flags & TDF_DETAILS))
     {