Add support for IncrementCounter in Hydrogen.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index a938ee56ba80197dcf183a65dc7381eda456f7bb..debb668a62d6729f8c59a38674a8ae9a41443387 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -80,6 +80,7 @@ class LCodeGen;
   V(CmpT)                                       \
   V(CmpConstantEqAndBranch)                     \
   V(ConstantD)                                  \
+  V(ConstantE)                                  \
   V(ConstantI)                                  \
   V(ConstantS)                                  \
   V(ConstantT)                                  \
@@ -1221,6 +1222,14 @@ class LConstantD: public LTemplateInstruction<1, 0, 1> {
   double value() const { return hydrogen()->DoubleValue(); }
 };
 
+class LConstantE: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(ConstantE, "constant-e")
+  DECLARE_HYDROGEN_ACCESSOR(Constant)
+
+  ExternalReference value() const { return hydrogen()->ExternalValue(); }
+};
+
 
 class LConstantT: public LTemplateInstruction<1, 0, 0> {
  public: