From 35ee7f54686d7cba0feb5c1750ae4071db252000 Mon Sep 17 00:00:00 2001
From: Jun Ma <JunMa@linux.alibaba.com>
Date: Fri, 17 May 2019 10:13:29 +0000
Subject: [PATCH] re PR tree-optimization/90106 (builtin sqrt() ignoring libm's
 sqrt call result)

	PR tree-optimization/90106
	* gcc.dg/cdce3.c: New test.

From-SVN: r271319
---
 gcc/testsuite/ChangeLog      |  5 +++++
 gcc/testsuite/gcc.dg/cdce3.c | 11 +++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/cdce3.c

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f6dd06d961e..053a9492168 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-05-17  Jun Ma  <JunMa@linux.alibaba.com>
+
+	PR tree-optimization/90106
+	* gcc.dg/cdce3.c: New test.
+
 2019-05-17  Andreas Krebbel  <krebbel@linux.ibm.com>
 
 	* gcc.target/s390/zvector/vec-sldw.c: New test.
diff --git a/gcc/testsuite/gcc.dg/cdce3.c b/gcc/testsuite/gcc.dg/cdce3.c
new file mode 100644
index 00000000000..8a7437969f2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cdce3.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump "cdce3.c:9: \[^\n\r]* function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump "sqrtf \\(\[^\n\r]*\\); \\\[tail call\\\]" "optimized" } } */
+
+float sqrtf (float);
+float foo (float x)
+{
+  return sqrtf (x);
+}
+