One less dependent load in InvokeBuiltin.

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 352933678b74c2ae36bbd7a8cad29583d59e0095..c7ee13f68e5fcddf567f8250c1a3848b31b2efc6 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1396,16 +1396,18 @@ void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag) {
 
 
 void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
+  ASSERT(!target.is(edi));
+
+  // Load the builtins object into target register.
+  mov(target, Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX)));
+  mov(target, FieldOperand(target, GlobalObject::kBuiltinsOffset));
+
   // Load the JavaScript builtin function from the builtins object.
-  mov(edi, Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX)));
-  mov(edi, FieldOperand(edi, GlobalObject::kBuiltinsOffset));
-  int builtins_offset =
-      JSBuiltinsObject::kJSBuiltinsOffset + (id * kPointerSize);
-  mov(edi, FieldOperand(edi, builtins_offset));
-  // Load the code entry point from the function into the target register.
-  mov(target, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
-  mov(target, FieldOperand(target, SharedFunctionInfo::kCodeOffset));
-  add(Operand(target), Immediate(Code::kHeaderSize - kHeapObjectTag));
+  mov(edi, FieldOperand(target, JSBuiltinsObject::OffsetOfFunctionWithId(id)));
+
+  // Load the code entry point from the builtins object.
+  mov(target, FieldOperand(target, JSBuiltinsObject::OffsetOfCodeWithId(id)));
+  lea(target, FieldOperand(target, Code::kHeaderSize));
 }