Remove --log-regexp.

src/regexp/jsregexp.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.
 
 #include "src/regexp/jsregexp.h"
 
 #include <memory>
 
 #include "src/base/platform/platform.h"
 #include "src/compilation-cache.h"
@@ skipping 123 matching lines @@
 
 MaybeHandle<Object> RegExpImpl::Compile(Handle<JSRegExp> re,
                                         Handle<String> pattern,
                                         JSRegExp::Flags flags) {
   Isolate* isolate = re->GetIsolate();
   Zone zone(isolate->allocator());
   CompilationCache* compilation_cache = isolate->compilation_cache();
   MaybeHandle<FixedArray> maybe_cached =
       compilation_cache->LookupRegExp(pattern, flags);
   Handle<FixedArray> cached;
-  bool in_cache = maybe_cached.ToHandle(&cached);
-  LOG(isolate, RegExpCompileEvent(re, in_cache));
-
-  Handle<Object> result;
-  if (in_cache) {
+  if (maybe_cached.ToHandle(&cached)) {
     re->set_data(*cached);
     return re;
   }
   pattern = String::Flatten(pattern);
   PostponeInterruptsScope postpone(isolate);
   RegExpCompileData parse_result;
   FlatStringReader reader(isolate, pattern);
   if (!RegExpParser::ParseRegExp(re->GetIsolate(), &zone, &reader, flags,
                                  &parse_result)) {
     // Throw an exception if we fail to parse the pattern.
@@ skipping 6711 matching lines @@
 
 
 void RegExpResultsCache::Clear(FixedArray* cache) {
   for (int i = 0; i < kRegExpResultsCacheSize; i++) {
     cache->set(i, Smi::kZero);
   }
 }
 
 }  // namespace internal
 }  // namespace v8