Remove --check-stack flag from V8.

src/arm/virtual-frame-arm.cc

 // Copyright 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 128 matching lines @@
 
 
 void VirtualFrame::AllocateStackSlots() {
   int count = local_count();
   if (count > 0) {
     Comment cmnt(masm(), "[ Allocate space for locals");
     Adjust(count);
       // Initialize stack slots with 'undefined' value.
     __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
   }
-  if (FLAG_check_stack) {
-    __ LoadRoot(r2, Heap::kStackLimitRootIndex);
-  }
+  __ LoadRoot(r2, Heap::kStackLimitRootIndex);
   for (int i = 0; i < count; i++) {
     __ push(ip);
   }
-  if (FLAG_check_stack) {
-    // Put the lr setup instruction in the delay slot.  The kInstrSize is added
-    // to the implicit 8 byte offset that always applies to operations with pc
-    // and gives a return address 12 bytes down.
-    masm()->add(lr, pc, Operand(Assembler::kInstrSize));
-    masm()->cmp(sp, Operand(r2));
-    StackCheckStub stub;
-    // Call the stub if lower.
-    masm()->mov(pc,
-                Operand(reinterpret_cast<intptr_t>(stub.GetCode().location()),
-                        RelocInfo::CODE_TARGET),
-                LeaveCC,
-                lo);
-  }
+  // Check the stack for overflow or a break request.
+  // Put the lr setup instruction in the delay slot.  The kInstrSize is added
+  // to the implicit 8 byte offset that always applies to operations with pc
+  // and gives a return address 12 bytes down.
+  masm()->add(lr, pc, Operand(Assembler::kInstrSize));
+  masm()->cmp(sp, Operand(r2));
+  StackCheckStub stub;
+  // Call the stub if lower.
+  masm()->mov(pc,
+              Operand(reinterpret_cast<intptr_t>(stub.GetCode().location()),
+                      RelocInfo::CODE_TARGET),
+              LeaveCC,
+              lo);
 }
 
 
+
 void VirtualFrame::SaveContextRegister() {
   UNIMPLEMENTED();
 }
 
 
 void VirtualFrame::RestoreContextRegister() {
   UNIMPLEMENTED();
 }
 
 
@@ skipping 206 matching lines @@
   ASSERT(stack_pointer_ == element_count() - 1);
   elements_.Add(FrameElement::MemoryElement());
   stack_pointer_++;
   __ push(reg);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal