Enable virtual invokes, use new alloc, misc

Make use of the new alloc routines.  Extended the filter to allow
simple virtual invoke test to get through.  Fixed a register allocation
problem.

Note that the invoke sequeces are still the verbose & long path.
Will start using the new CodeandDirectMethods mechanism in upcoming CL

Change-Id: I8ff79f6392ff3da14d7679dcf65029ae48f18eba
diff --git a/src/compiler/codegen/arm/ArchFactory.cc b/src/compiler/codegen/arm/ArchFactory.cc
index cf606a3..c8c7e34 100644
--- a/src/compiler/codegen/arm/ArchFactory.cc
+++ b/src/compiler/codegen/arm/ArchFactory.cc
@@ -23,6 +23,20 @@
  */
 
 /*
+ * Utiltiy to load the current Method*.  Broken out
+ * to allow easy change between placing the current Method* in a
+ * dedicated register or its home location in the frame.
+ */
+static void loadCurrMethodDirect(CompilationUnit *cUnit, int rTgt)
+{
+#if defined(METHOD_IN_REG)
+    genRegCopy(cUnit, rTgt, rMETHOD);
+#else
+    loadWordDisp(cUnit, rSP, 0, rTgt);
+#endif
+}
+
+/*
  * Perform a "reg cmp imm" operation and jump to the PCR region if condition
  * satisfies.
  */