Upgrade gcc-4.4.3 for Android toolchain.

- Backport upstream patches to support arm hardfp.
- Backport gcc-4.5 patches to support -march=atom. Now it is
able to build atom toolchain with glibc from this branch
- Develop a bunch of optimizations
- Fix a few arm dejagnu failures

To-do list:
- Support Android/atom
- Fix ia32 bootstrap failure

Change-Id: I5e10dcd21620d4d8ca984d1d1707a76067e61691

1 files changed, 70 insertions, 0 deletions

diff --git a/gcc-4.4.3/gcc/testsuite/gcc.dg/overlay1.c b/gcc-4.4.3/gcc/testsuite/gcc.dg/overlay1.c
new file mode 100644
index 000000000..a87dfa415
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.dg/overlay1.c
@@ -0,0 +1,70 @@
+/* Check that store sinking does not break stack overlay */
+/* { dg-do run } */
+/* { dg-options "-O2 -fearly-stack-alloc" } */
+
+extern void abort (void);
+
+struct a;
+
+typedef void (*func_t)(struct a*);
+
+struct a {
+  func_t impl;
+};
+
+struct b {
+  struct a base;
+};
+
+void
+a_impl (struct a *const this)
+{
+  abort();
+}
+
+void
+b_impl (struct a * const this)
+{
+}
+
+void __attribute__((noinline))
+a_interface (struct a * const this)
+{
+  this->impl(this);
+}
+
+int
+main(int argc, char **argv)
+{
+  {
+  struct b obj1;
+
+L1:
+    if (argc > 400)
+      return 0;
+    obj1.base.impl = b_impl;
+
+L2:
+    a_interface (&obj1.base);
+    obj1.base.impl = b_impl;
+    obj1.base.impl = a_impl;
+    if (argc > 200)
+      return 0;
+  }
+  {
+  struct b obj2;
+    obj2.base.impl = a_impl;
+
+L3:
+    obj2.base.impl = b_impl;
+    if (argc > 100)
+      return 0;
+
+L4:
+    a_interface (&obj2.base);
+    obj2.base.impl = b_impl;
+    obj2.base.impl = a_impl;
+  }
+
+  return 0;
+}