[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

4 files changed, 95 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr55022.c b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr55022.c
new file mode 100644
index 000000000..c631c0e23
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr55022.c
@@ -0,0 +1,27 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -fgraphite-identity" } */
+
+extern void abort (void);
+
+void __attribute__((noinline,noclone))
+f(int *limit, int minLen, int maxLen)
+{
+  int i;
+
+  for (i = minLen; i <= maxLen; i++) {
+      limit[i] = i;
+  }
+}
+
+int main()
+{
+  int limit[256], i;
+  f (limit, 0, 255);
+  for (i = 0; i < 256; ++i)
+    {
+      if (limit[i] != i)
+	abort ();
+      __asm__ volatile ("" : : : "memory");
+    }
+  return 0;
+}
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr59817-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr59817-1.c
new file mode 100644
index 000000000..175fa16fd
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr59817-1.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -floop-interchange" } */
+
+int kd;
+
+void
+n2(void)
+{
+  static int so;
+  static short int i5;
+  int wj;
+  int *il;
+  int *nk = &so;
+  for (wj = 0; wj < 2; ++wj)
+    *nk = ((i5 += *il) || kd );
+}
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr59817-2.c b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr59817-2.c
new file mode 100644
index 000000000..139500768
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr59817-2.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -floop-interchange" } */
+
+void
+xl(void)
+{
+  static int j3;
+  for (j3 = 0; j3 < 1; ++j3) {
+      static int f2;
+      static int w7;
+      short int b5;
+      int ok;
+      f2 = (b5 += ok) ? (w7 = 0): (w7 ? 0 : (f2 = ok));
+  }
+}
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr60979.c b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr60979.c
new file mode 100644
index 000000000..0004a5124
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/graphite/pr60979.c
@@ -0,0 +1,37 @@
+/* { dg-options "-O -fgraphite-identity" } */
+
+#include <setjmp.h>
+
+struct x;
+
+typedef struct x **(*a)(struct x *);
+
+struct x {
+    union {
+	struct {
+	    union {
+		a *i;
+	    } l;
+	    int s;
+	} y;
+    } e;
+};
+
+jmp_buf c;
+
+void
+b(struct x *r)
+{
+  int f;
+  static int w = 0;
+  volatile jmp_buf m;
+  f = (*(((struct x *)r)->e.y.l.i[2]((struct x *)r)))->e.y.s;
+  if (w++ != 0)
+    __builtin_memcpy((char *)m, (const char *)c, sizeof(jmp_buf));
+  if (setjmp (c) == 0) {
+      int z;
+      for (z = 0; z < 0; ++z)
+	;
+  }
+  d((const char *)m);
+}