re PR target/65249 (unable to find a register to spill in class 'R0_REGS' when…

re PR target/65249 (unable to find a register to spill in class 'R0_REGS' when compiling protobuf on sh4)

gcc/testsuite/
	PR target/65249
	* g++.dg/torture/pr65249.C: New.

From-SVN: r221256

gcc/testsuite/ChangeLog

+2015-03-07  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/65249
+	* g++.dg/torture/pr65249.C: New.
+
 2015-03-07  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* gcc.target/i386/pr45685.c (uint64_t): Replace long with long

gcc/testsuite/g++.dg/torture/pr65249.C

+// { dg-do compile }
+// { dg-additional-options "-fPIC -fstack-protector-strong" { target fpic } }
+// { dg-require-effective-target fstack_protector }
+
+struct struct0
+{
+  struct0 (void(*)());
+};
+
+int func5 (int* ptr);
+void func3 (int*, struct0*);
+
+inline void
+func4 (int* a, void (*b)())
+{
+  if (func5 (a) != 2)
+  {
+    struct0 f (b);
+    func3(a, &f);
+  }
+}
+
+struct struct1
+{
+  const void* val0;
+  const void* val1;
+};
+
+void* func3 (const void*);
+
+static const void* gvar1 = 0;
+static const void* gvar2 = 0;
+static int gvar0 = 0;
+
+void
+func0 (void)
+{
+  gvar2 = func3 (gvar1);
+}
+
+inline void
+func1 (void)
+{
+  func4 (&gvar0, &func0);
+}
+
+struct1 func2 (void)
+{
+  func1 ();
+  struct1 s;
+  s.val0 = gvar1;
+  s.val1 = gvar2;
+  return s;
+}