Invoke support for Quick Compiler

Fleshed out invoke and const-string support.  Fixed a bug in Phi node
insertion.

With this CL, the "Recursive Fibonacci" and "HelloWorld" milestones are
met.

Added are a set of "HL" (for High-Level) invoke intrinsics.  Until we
complete the merging of the Quick & Iceland runtime models the invoke
code sequences are slightly different.  Thus, the Greenland IR needs
to represent invokes at a somewhat higher level than Iceland.  The
test for fast/slow path needs to happen during the lowering of the
HLInvokeXXX intrinsics in both the Quick and Portable paths.

This will generally be the case in the short term - push fast/slow
path determination below the Greenland IR level.  As unification
proceeds, we'll pull as much as makes sense into the common front end.

Change-Id: I0a18edf1be18583c0afdc3f7e10a3e4691968e77
diff --git a/src/compiler/codegen/GenCommon.cc b/src/compiler/codegen/GenCommon.cc
index 29f3cca..a1c7645 100644
--- a/src/compiler/codegen/GenCommon.cc
+++ b/src/compiler/codegen/GenCommon.cc
@@ -1083,8 +1083,8 @@
   }
 }
 
-void genConstClass(CompilationUnit* cUnit, uint32_t type_idx, RegLocation rlDest,
-                   RegLocation rlSrc)
+void genConstClass(CompilationUnit* cUnit, uint32_t type_idx,
+                   RegLocation rlDest)
 {
   RegLocation rlMethod = loadCurrMethod(cUnit);
   int resReg = oatAllocTemp(cUnit);
@@ -1145,8 +1145,8 @@
   }
 }
 
-void genConstString(CompilationUnit* cUnit, uint32_t string_idx, RegLocation rlDest,
-          RegLocation rlSrc)
+void genConstString(CompilationUnit* cUnit, uint32_t string_idx,
+                    RegLocation rlDest)
 {
   /* NOTE: Most strings should be available at compile time */
   int32_t offset_of_string = Array::DataOffset(sizeof(String*)).Int32Value() +