[turbofan] Add option to filter --print-opt-code.

BUG=

Review-Url: https://codereview.chromium.org/2375933003
Cr-Commit-Position: refs/heads/master@{#39837}

src/codegen.cc

@@ -146,7 +146,8 @@ void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) {
       isolate->bootstrapper()->IsActive()
           ? FLAG_print_builtin_code
           : (FLAG_print_code || (info->IsStub() && FLAG_print_code_stubs) ||
-             (info->IsOptimizing() && FLAG_print_opt_code));
+             (info->IsOptimizing() && FLAG_print_opt_code &&
+              info->shared_info()->PassesFilter(FLAG_print_opt_code_filter)));
   if (print_code) {
     std::unique_ptr<char[]> debug_name = info->GetDebugName();
     CodeTracer::Scope tracing_scope(info->isolate()->GetCodeTracer());

src/flag-definitions.h

@@ -1124,6 +1124,7 @@ DEFINE_BOOL(test_primary_stub_cache, false,
 // codegen-ia32.cc / codegen-arm.cc
 DEFINE_BOOL(print_code, false, "print generated code")
 DEFINE_BOOL(print_opt_code, false, "print optimized code")
+DEFINE_STRING(print_opt_code_filter, "*", "filter for printing optimized code")
 DEFINE_BOOL(print_unopt_code, false,
             "print unoptimized code before "
             "printing optimized code based on it")