From 9732f43e1cbf1d5025a049fb47a3e4c7b375410a Mon Sep 17 00:00:00 2001
From: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 14 Jan 2018 11:20:31 +0000
Subject: [PATCH] 	PR ipa/83051 	* gcc.c-torture/compile/pr83051.c: New
 testcase. 	* ipa-inline.c (edge_badness): Tolerate roundoff errors.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@256659 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog                                 |  5 +++++
 gcc/ipa-inline.c                              |  3 ++-
 gcc/testsuite/ChangeLog                       |  5 +++++
 gcc/testsuite/gcc.c-torture/compile/pr83051.c | 31 +++++++++++++++++++++++++++
 4 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.c-torture/compile/pr83051.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index abce2c83d53..ed1e0ef1324 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-14  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/83051
+	* ipa-inline.c (edge_badness): Tolerate roundoff errors.
+
 2018-01-14  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* ipa-inline.c (want_inline_small_function_p): Return false if
diff --git a/gcc/ipa-inline.c b/gcc/ipa-inline.c
index c3acfb29b40..145ffbb5ef0 100644
--- a/gcc/ipa-inline.c
+++ b/gcc/ipa-inline.c
@@ -997,7 +997,8 @@ edge_badness (struct cgraph_edge *edge, bool dump)
   /* Check that inlined time is better, but tolerate some roundoff issues.
      FIXME: When callee profile drops to 0 we account calls more.  This
      should be fixed by never doing that.  */
-  gcc_checking_assert ((edge_time - callee_info->time).to_int () <= 0
+  gcc_checking_assert ((edge_time * 100
+			- callee_info->time * 101).to_int () <= 0
 			|| callee->count.ipa ().initialized_p ());
   gcc_checking_assert (growth <= callee_info->size);
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d8263d6ab3a..c07fada1ac8 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-14  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/83051
+	* gcc.c-torture/compile/pr83051.c: New testcase.
+
 2018-01-14  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
 
 	PR tree-optimization/83501
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr83051.c b/gcc/testsuite/gcc.c-torture/compile/pr83051.c
new file mode 100644
index 00000000000..133cabc538b
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr83051.c
@@ -0,0 +1,31 @@
+
+int a[1], b, c, d, e, f, g, h;
+
+void fn1 (int p)
+{ 
+  b = b >> 8 ^ a[b ^ (c & 5)] >> 8 ^ a[(b ^ c) & 5];
+  b = b >> 8 ^ a[(b ^ c) & 5];
+}
+
+static void fn2 ()
+{ 
+  int k;
+  while (1)
+    while (e)
+      { 
+        while (g)
+          while (h)
+            for (k = 0; k < 6; k++)
+              while (f)
+                fn1 (0);
+        fn1 (0);
+        fn1 (0);
+        fn1 (0);
+      }
+}
+
+int main ()
+{ 
+  fn2 ();
+  return 0;
+}
-- 
2.11.4.GIT