-fuse-caller-save - Add test-case

2014-04-24  Radovan Obradovic  <robradovic@mips.com>
            Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/fuse-caller-save.c: New test.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r209745

gcc/testsuite/ChangeLog

+2014-04-24  Radovan Obradovic  <robradovic@mips.com>
+            Tom de Vries  <tom@codesourcery.com>
+
+	* gcc.dg/fuse-caller-save.c: New test.
+
 2014-04-24  Joey Ye  <joey.ye@arm.com>
 
 	* g++.dg/cpp0x/nsdmi-union5.C: Change to runtime test.

gcc/testsuite/gcc.dg/fuse-caller-save.c

+/* { dg-do run } */
+/* { dg-options "-fuse-caller-save" } */
+/* Testing -fuse-caller-save optimization option.  */
+
+static int __attribute__((noinline))
+bar (int x)
+{
+  return x + 3;
+}
+
+int __attribute__((noinline))
+foo (int y)
+{
+  return y + bar (y);
+}
+
+int
+main (void)
+{
+  return !(foo (5) == 13);
+}