Remove --check-stack flag from V8.

src/ia32/codegen-ia32.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2185 matching lines @@
 };
 
 
 void DeferredStackCheck::Generate() {
   StackCheckStub stub;
   __ CallStub(&stub);
 }
 
 
 void CodeGenerator::CheckStack() {
-  if (FLAG_check_stack) {
-    DeferredStackCheck* deferred = new DeferredStackCheck;
-    ExternalReference stack_guard_limit =
-        ExternalReference::address_of_stack_guard_limit();
-    __ cmp(esp, Operand::StaticVariable(stack_guard_limit));
-    deferred->Branch(below);
-    deferred->BindExit();
-  }
+  DeferredStackCheck* deferred = new DeferredStackCheck;
+  ExternalReference stack_guard_limit =
+      ExternalReference::address_of_stack_guard_limit();
+  __ cmp(esp, Operand::StaticVariable(stack_guard_limit));
+  deferred->Branch(below);
+  deferred->BindExit();
 }
 
 
 void CodeGenerator::VisitAndSpill(Statement* statement) {
   ASSERT(in_spilled_code());
   set_in_spilled_code(false);
   Visit(statement);
   if (frame_ != NULL) {
     frame_->SpillAll();
   }
@@ skipping 5854 matching lines @@
 
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) < (1 << 15));
   return (static_cast<unsigned>(cc_) << 1) | (strict_ ? 1 : 0);
 }
 
 #undef __
 
 } }  // namespace v8::internal