[regexp] Print correct kind of regexp code (native/bytecode) when tier-up

is enabled.

Change-Id: Iab87b9c7a0d0600782b02537844338ff065622ab
Bug: chromium:996234
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1765531Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Ana Pesko <anapesko@google.com>
Cr-Commit-Position: refs/heads/master@{#63360}

src/regexp/regexp-compiler.cc

@@ -274,7 +274,7 @@ RegExpCompiler::CompilationResult RegExpCompiler::Assemble(
   isolate->IncreaseTotalRegexpCodeGenerated(code->Size());
   work_list_ = nullptr;
 #ifdef ENABLE_DISASSEMBLER
-  if (FLAG_print_code && !FLAG_regexp_interpret_all) {
+  if (FLAG_print_code && code->IsCode()) {
     CodeTracer::Scope trace_scope(isolate->GetCodeTracer());
     OFStream os(trace_scope.file());
     Handle<Code>::cast(code)->Disassemble(pattern->ToCString().get(), os);

test/mjsunit/regress/regress-996234.js

+// Copyright 2019 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.
+
+// Flags: --regexp-tier-up --print-code --trace-regexp-bytecodes
+
+// Test printing of regexp code and bytecode when tiering up from the
+// interpreter to the compiler.
+function __f_13544(__v_62631) {
+  __v_62631.replace(/\s/g);
+}
+
+__f_13544("No");
+
+let re = /^.$/;
+re.test("a");
+re.test("3");
+re.test("π");