Simplify invocation sequence at monomorphic function invocation sites.

src/ia32/lithium-codegen-ia32.h

Index: src/ia32/lithium-codegen-ia32.h
diff --git a/src/ia32/lithium-codegen-ia32.h b/src/ia32/lithium-codegen-ia32.h
index 52befc69746cc320e8d40812fcc4403d45712c69..a2810f05c3b5e0b0fde3e06a46e6b65979897939 100644
--- a/src/ia32/lithium-codegen-ia32.h
+++ b/src/ia32/lithium-codegen-ia32.h
@@ -206,12 +206,18 @@ class LCodeGen BASE_EMBEDDED {
                                LInstruction* instr,
                                LOperand* context);
 
+  enum EDIState {
+    EDI_UNINITIALIZED,
+    EDI_CONTAINS_TARGET
+  };
+
   // Generate a direct call to a known function.  Expects the function
   // to be in edi.
   void CallKnownFunction(Handle<JSFunction> function,
                          int arity,
                          LInstruction* instr,
-                         CallKind call_kind);
+                         CallKind call_kind,
+                         EDIState edi_state);
 
   void RecordSafepointWithLazyDeopt(LInstruction* instr,
                                     SafepointMode safepoint_mode);