Remove --stop-at flag from several backends.

src/full-codegen/arm64/full-codegen-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 92 matching lines @@
 // frames-arm.h for its layout.
 void FullCodeGenerator::Generate() {
   CompilationInfo* info = info_;
   profiling_counter_ = isolate()->factory()->NewCell(
       Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate()));
   SetFunctionPosition(literal());
   Comment cmnt(masm_, "[ Function compiled by full code generator");
 
   ProfileEntryHookStub::MaybeCallEntryHook(masm_);
 
-#ifdef DEBUG
-  if (strlen(FLAG_stop_at) > 0 &&
-      info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) {
-    __ Debug("stop-at", __LINE__, BREAK);
-  }
-#endif
-
   if (FLAG_debug_code && info->ExpectsJSReceiverAsReceiver()) {
     int receiver_offset = info->scope()->num_parameters() * kXRegSize;
     __ Peek(x10, receiver_offset);
     __ AssertNotSmi(x10);
     __ CompareObjectType(x10, x10, x11, FIRST_JS_RECEIVER_TYPE);
     __ Assert(ge, kSloppyFunctionExpectsJSReceiverReceiver);
   }
 
   // Open a frame scope to indicate that there is a frame on the stack.
   // The MANUAL indicates that the scope shouldn't actually generate code
@@ skipping 4600 matching lines @@
   }
 
   return INTERRUPT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64