obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 65 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/opt/mmx1.C b/gcc/testsuite/g++.dg/opt/mmx1.C
new file mode 100644
index 000000000..7af0d0145
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/mmx1.C
@@ -0,0 +1,65 @@
+// PR optimization/4994
+// This testcase ICEd because movsi was not supporting direct
+// mmx -> mmx register moves.
+// { dg-do compile }
+// { dg-options "-O2" }
+// { dg-options "-fno-exceptions -O2 -mmmx -fPIC" { target { { i?86-*-* x86_64-*-* } && { ilp32 && fpic } } } }
+
+struct A {
+  unsigned a0;
+  bool a1 () { return !--a0; }
+  void a2 ();
+};
+
+struct B
+{
+  B ();
+  B (const B &);
+  ~B();
+  B &operator= (const B &);
+  B b0 (unsigned long x, int y = 0, int z = 10) const;
+
+private:
+  A *b1;
+  static A *b2;
+};
+
+inline B::~B()
+{
+  if (b1->a1 () && b1 == b2)
+    b1->a2();
+}
+
+struct C
+{
+  C *c0;
+};
+
+struct D
+{
+  C *d0;
+  D ();
+  D (const D &c0) {}
+  D &operator++ () {
+    C *x = d0; C *y = x->c0;
+    while (x == y->c0)
+      x = y;
+    d0 = x;
+    return *this;
+  }
+};
+
+B foo (const char *x, const B &y);
+
+void bar (void)
+{
+  B *y = 0;
+  B z;
+  for (unsigned long l = 0; l < 2147483647L * 2UL + 1; l++)
+    {
+      z = y->b0 (l);
+      *y = foo ("data", z);
+    }
+  D d;
+  ++d;
+}