[4.9] Switch gcc-4.9 to use google/gcc-4_9 branch.

This source drop uses svn version r212828 of google/gcc-4.9 branch.
We also cherry-picked r213062, r213063 and r213064 to fix windows
build issues.
All gcc-4.9 patches before July 3rd are ported to google/gcc-4.9.
The following prior commits has not been merged to google branch yet.
(They are included in this commit).
e7af147f979e657fe2df00808e5b4319b0e088c6,
baf87df3cb2683649ba7e9872362a7e721117c23, and
c231900e5dcc14d8296bd9f62b45997a49d4d5e7.

Change-Id: I4bea3ea470387ff751c2be4cb0d4a12059b9299b

5 files changed, 111 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/g++.dg/opt/pr60849.C b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr60849.C
new file mode 100644
index 000000000..52d8826b0
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr60849.C
@@ -0,0 +1,13 @@
+// { dg-do compile }
+// { dg-options "-O2" }
+
+int g;
+
+extern "C" int isnan ();
+
+void foo(float a) {
+  int (*xx)(...);
+  xx = isnan;
+  if (xx(a))
+    g++;
+}
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/opt/pr60912.C b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr60912.C
new file mode 100644
index 000000000..ad51ba725
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr60912.C
@@ -0,0 +1,18 @@
+// { dg-do run }
+// { dg-options "-O -fno-inline -fipa-pta" }
+
+struct IFoo
+{
+  virtual void Foo () = 0;
+};
+
+struct Bar:IFoo
+{
+  void Foo () {}
+};
+
+int main ()
+{
+  (new Bar ())->Foo ();
+  return 0;
+}
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/opt/pr61456.C b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr61456.C
new file mode 100644
index 000000000..14a118b57
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr61456.C
@@ -0,0 +1,26 @@
+// { dg-do compile }
+// { dg-options "-O2 -std=c++11 -Werror=uninitialized" }
+
+int rand ();
+
+class Funcs
+{
+public:
+    int *f1 ();
+    int *f2 ();
+};
+typedef decltype (&Funcs::f1) pfunc;
+
+static int Set (Funcs * f, const pfunc & fp)
+{
+  (f->*fp) ();
+}
+
+void
+Foo ()
+{
+  pfunc fp = &Funcs::f1;
+  if (rand ())
+    fp = &Funcs::f2;
+  Set (0, fp);
+}
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/opt/pr61654.C b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr61654.C
new file mode 100644
index 000000000..78dc0c14c
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/opt/pr61654.C
@@ -0,0 +1,27 @@
+// PR middle-end/61654
+// { dg-do compile }
+
+class A
+{
+  virtual int a (int, int = 0) = 0;
+  int b (const int &);
+  int c;
+};
+
+class B : virtual A
+{
+  int d;
+  int a (int, int);
+};
+
+int
+A::b (const int &)
+{
+  return a ('\0');
+}
+
+int
+B::a (int, int)
+{
+  return 0 ? 0 : d;
+}
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/opt/typeinfo1.C b/gcc-4.9/gcc/testsuite/g++.dg/opt/typeinfo1.C
new file mode 100644
index 000000000..efac4cbd1
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/opt/typeinfo1.C
@@ -0,0 +1,27 @@
+// PR c++/61020
+// { dg-options "-O2" }
+// { dg-do run }
+
+#include <typeinfo>
+
+struct Base {
+  virtual ~Base() { }
+};
+
+struct Derived : public Base {
+};
+
+int compare(const Base& base)
+{
+  return typeid(base) == typeid(typeid(Derived));
+}
+
+int main()
+{
+  Base base;
+  Derived derived;
+
+  if (compare(base)) return 1;
+  if (compare(derived)) return 2;
+  return 0;
+}