Add stats support for existing optimizations

This patch adds support for the --dump-stats facility with existing
optimizations.

Change-Id: I68751b119a030952a11057cb651a3c63e87e73ea
Signed-off-by: Jean-Philippe Halimi <jean-philippe.halimi@intel.com>
diff --git a/compiler/optimizing/optimizing_compiler_stats.h b/compiler/optimizing/optimizing_compiler_stats.h
index 6375cf1..21af170 100644
--- a/compiler/optimizing/optimizing_compiler_stats.h
+++ b/compiler/optimizing/optimizing_compiler_stats.h
@@ -54,6 +54,10 @@
   kRemovedCheckedCast,
   kRemovedDeadInstruction,
   kRemovedNullCheck,
+  kConstantFolding,
+  kBooleanSimplifier,
+  kIntrinsicsRecognizer,
+  kLICM,
   kLastStat
 };
 
@@ -121,6 +125,10 @@
       case kRemovedCheckedCast: return "kRemovedCheckedCast";
       case kRemovedDeadInstruction: return "kRemovedDeadInstruction";
       case kRemovedNullCheck: return "kRemovedNullCheck";
+      case kConstantFolding: return "kConstantFolding";
+      case kBooleanSimplifier: return "kBooleanSimplifier";
+      case kIntrinsicsRecognizer: return "kIntrinsicsRecognizer";
+      case kLICM: return "kLICM";
 
       case kLastStat: break;  // Invalid to print out.
     }