predcom-1.C: New test.

2009-03-04  Nathan Sidwell  <nathan@codesourcery.com>

	* g++.dg/torture/predcom-1.C: New test.

From-SVN: r144629

gcc/testsuite/ChangeLog

+2009-03-04  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* g++.dg/torture/predcom-1.C: New test.
+
 2009-03-04  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/39362

gcc/testsuite/g++.dg/torture/predcom-1.C

+/* Test for ICE in predictive commoning with empty loop header block
+   on arm-none-linux-gnueabi.  */
+
+struct Foo
+{
+  double *ptr;
+  
+  Foo (double *ptr_)
+    : ptr (ptr_)
+  {
+  }
+  
+  Foo PostInc ()
+  {
+    return Foo (ptr++);
+  }
+};
+
+bool Baz (Foo first, double *last)
+{
+  Foo prev (first.ptr);
+  
+  first.ptr++;
+
+  while (first.ptr != last)
+    if (*first.PostInc ().ptr < *prev.PostInc ().ptr)
+      return false;
+}
+