Remove --stop-at flag from several backends.

src/full-codegen/x64/full-codegen-x64.cc

 // Copyright 2012 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_X64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 80 matching lines @@
 // frames-x64.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))) {
-    __ int3();
-  }
-#endif
-
   if (FLAG_debug_code && info->ExpectsJSReceiverAsReceiver()) {
     StackArgumentsAccessor args(rsp, info->scope()->num_parameters());
     __ movp(rcx, args.GetReceiverOperand());
     __ AssertNotSmi(rcx);
     __ CmpObjectType(rcx, FIRST_JS_RECEIVER_TYPE, rcx);
     __ Assert(above_equal, 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 to set up
@@ skipping 4495 matching lines @@
   DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64