Remove unused function GeneratePreEntryCode from ia32 code generator.

vm/code_generator_ia32.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/code_generator.h"
 
 #include "lib/error.h"
@@ skipping 199 matching lines @@
                                       0,
                                       -1);
   __ jmp(&StubCode::FixCallersTargetLabel());
 }
 
 
 void CodeGenerator::GenerateDeferredCode() {
 }
 
 
-// Pre entry code is called before the frame has been constructed:
-// - check for stack overflow.
-// - optionally count function invocations.
-// - optionally trigger optimizing compiler if invocation threshold has been
-//   reached.
-// Note that first 5 bytes may be patched with a jump.
-// TODO(srdjan): Add check that no object is inlined in the first
-// 5 bytes (length of a jump instruction).
-void CodeGenerator::GeneratePreEntryCode() {
-  // TODO(srdjan): Still needed?
-  __ nop(5);
-}
-
-
 void CodeGenerator::FinalizePcDescriptors(const Code& code) {
   ASSERT(pc_descriptors_list_ != NULL);
   const PcDescriptors& descriptors = PcDescriptors::Handle(
       pc_descriptors_list_->FinalizePcDescriptors(code.EntryPoint()));
   descriptors.Verify(parsed_function_.function().is_optimizable());
   code.set_pc_descriptors(descriptors);
 }
 
 
 void CodeGenerator::FinalizeStackmaps(const Code& code) {
@@ skipping 2713 matching lines @@
   const Error& error = Error::Handle(
       Parser::FormatError(script, token_index, "Error", format, args));
   va_end(args);
   Isolate::Current()->long_jump_base()->Jump(1, error);
   UNREACHABLE();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32