From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified
 gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream
 tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
---
 gcc/testsuite/gcc.dg/tree-ssa/flatten-2.c | 85 +++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/flatten-2.c

(limited to 'gcc/testsuite/gcc.dg/tree-ssa/flatten-2.c')

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/flatten-2.c b/gcc/testsuite/gcc.dg/tree-ssa/flatten-2.c
new file mode 100644
index 000000000..ffed23cf4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/flatten-2.c
@@ -0,0 +1,85 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-early-inlining" } */
+
+extern void do_something_usefull();
+/* Check that we finish compiling even if instructed to
+   flatten a cyclic callgraph.  Verify we correctly
+   flatten with another function marked flatten in the
+   callgraph. 
+
+   Main inline is cureful about indirect calls giving
+   precedence to breaking cycle at indirect call sites.
+   Early inliner can't do similar analysis, so we need
+   to disable it if we want cycles to be broken consistently.  */
+
+void __attribute__((flatten)) direct(void)
+{
+  direct();
+}
+
+
+void __attribute__((flatten)) indirect(void);
+static void indirect1(void)
+{
+  indirect();
+}
+void __attribute__((flatten)) indirect(void)
+{
+  indirect1();
+}
+
+
+void __attribute__((flatten)) doubleindirect(void);
+static void doubleindirect2(void)
+{
+  doubleindirect();
+  do_something_usefull ();
+}
+static void doubleindirect1(void)
+{
+  doubleindirect2();
+}
+void __attribute__((flatten)) doubleindirect(void)
+{
+  doubleindirect1();
+}
+
+
+static void subcycle1(void);
+static void subcycle2(void)
+{
+  subcycle1();
+  do_something_usefull ();
+}
+static void subcycle1(void)
+{
+  subcycle2();
+}
+void __attribute__((flatten)) subcycle(void)
+{
+  subcycle1();
+}
+
+
+static void doublesubcycle1(void);
+static void doublesubcycle2(void);
+static void doublesubcycle3(void)
+{
+  doublesubcycle1();
+  do_something_usefull ();
+}
+static void doublesubcycle2(void)
+{
+  doublesubcycle3();
+}
+static void doublesubcycle1(void)
+{
+  doublesubcycle2();
+}
+void __attribute__((flatten)) doublesubcycle(void)
+{
+  doublesubcycle1();
+}
+
+/* { dg-final { scan-assembler "cycle\[123\]\[: \t\n\]" } } */
+/* { dg-final { scan-assembler-not "indirect\[12\]\[: \t\n\]" } } */
-- 
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