From 888a1049c2561ccad90da753ab9234b10052eee7 Mon Sep 17 00:00:00 2001
From: Richard Biener <rguenther@suse.de>
Date: Mon, 14 Jul 2014 11:22:34 +0000
Subject: [PATCH] re PR lto/61786 (wrong code by LTO on x86_64-linux-gnu)

2014-07-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/61786
	* gcc.dg/torture/pr61786.c: New testcase.
	* gcc.dg/lto/pr61786_0.c: Likewise.
	* gcc.dg/lto/pr61786_1.c: Likewise.

From-SVN: r212515
---
 gcc/testsuite/ChangeLog                |  7 ++++++
 gcc/testsuite/gcc.dg/lto/pr61786_0.c   | 27 ++++++++++++++++++++++
 gcc/testsuite/gcc.dg/lto/pr61786_1.c   |  8 +++++++
 gcc/testsuite/gcc.dg/torture/pr61786.c | 31 ++++++++++++++++++++++++++
 4 files changed, 73 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/lto/pr61786_0.c
 create mode 100644 gcc/testsuite/gcc.dg/lto/pr61786_1.c
 create mode 100644 gcc/testsuite/gcc.dg/torture/pr61786.c

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a2529fc17b3..a6483a68ec1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2014-07-14  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/61786
+	* gcc.dg/torture/pr61786.c: New testcase.
+	* gcc.dg/lto/pr61786_0.c: Likewise.
+	* gcc.dg/lto/pr61786_1.c: Likewise.
+
 2014-07-14  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/61757
diff --git a/gcc/testsuite/gcc.dg/lto/pr61786_0.c b/gcc/testsuite/gcc.dg/lto/pr61786_0.c
new file mode 100644
index 00000000000..442b5b2c302
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/pr61786_0.c
@@ -0,0 +1,27 @@
+/* { dg-lto-do run } */
+/* { dg-lto-options { { -flto } } } */
+/* { dg-extra-ld-options "-O" } */
+
+int a, *c = &a, d;
+char b = 1;
+
+void
+fn1 (void)
+{
+  d = 1;
+lbl:
+  if (b == d)
+    {
+      d = *c;
+      if (b)
+	goto lbl;
+    }
+}
+
+int
+fn2 (void)
+{
+  fn1 ();
+  return 0;
+}
+
diff --git a/gcc/testsuite/gcc.dg/lto/pr61786_1.c b/gcc/testsuite/gcc.dg/lto/pr61786_1.c
new file mode 100644
index 00000000000..4cfd0aa0b69
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/pr61786_1.c
@@ -0,0 +1,8 @@
+int fn2 (void);
+
+int
+main ()
+{
+  fn2 ();
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/torture/pr61786.c b/gcc/testsuite/gcc.dg/torture/pr61786.c
new file mode 100644
index 00000000000..1e32a822b2e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr61786.c
@@ -0,0 +1,31 @@
+/* { dg-do run } */
+
+int a, *c = &a, d; 
+char b = 1;
+
+void
+fn1 ()
+{
+  d = 1;
+lbl:
+  if (b == d)
+    {
+      d = *c;
+      if (b)
+	goto lbl;
+    }
+}
+
+int
+fn2 ()
+{
+  fn1 ();
+  return 0;
+}
+
+int
+main ()
+{
+  fn2 ();
+  return 0;
+}