Simplify MacroAssembler::InvokePrologue a bit.

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 4a595783e2dc56353c72a0a6cc089144161de3ec..5cc7752f737d66f29f7f2cafaabe44a15eb55ed6 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1921,8 +1921,6 @@ void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) {
 
 void MacroAssembler::InvokePrologue(const ParameterCount& expected,
                                     const ParameterCount& actual,
-                                    Handle<Code> code_constant,
-                                    const Operand& code_operand,
                                     Label* done,
                                     bool* definitely_mismatches,
                                     InvokeFlag flag,
@@ -1973,13 +1971,6 @@ void MacroAssembler::InvokePrologue(const ParameterCount& expected,
   if (!definitely_matches) {
     Handle<Code> adaptor =
         isolate()->builtins()->ArgumentsAdaptorTrampoline();
-    if (!code_constant.is_null()) {
-      mov(edx, Immediate(code_constant));
-      add(edx, Immediate(Code::kHeaderSize - kHeapObjectTag));
-    } else if (!code_operand.is_reg(edx)) {
-      mov(edx, code_operand);
-    }
-
     if (flag == CALL_FUNCTION) {
       call_wrapper.BeforeCall(CallSize(adaptor, RelocInfo::CODE_TARGET));
       call(adaptor, RelocInfo::CODE_TARGET);
@@ -2005,9 +1996,8 @@ void MacroAssembler::InvokeCode(const Operand& code,
 
   Label done;
   bool definitely_mismatches = false;
-  InvokePrologue(expected, actual, Handle<Code>::null(), code,
-                 &done, &definitely_mismatches, flag, Label::kNear,
-                 call_wrapper);
+  InvokePrologue(expected, actual, &done, &definitely_mismatches, flag,
+                 Label::kNear, call_wrapper);
   if (!definitely_mismatches) {
     if (flag == CALL_FUNCTION) {
       call_wrapper.BeforeCall(CallSize(code));