[arm] Disable --turbo-types by default instead of ignoring the flag.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/561913004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23903 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler.cc

@@ -140,10 +140,7 @@ void CompilationInfo::Initialize(Isolate* isolate,
   if (isolate_->debug()->is_active()) MarkAsDebug();
   if (FLAG_context_specialization) MarkAsContextSpecializing();
   if (FLAG_turbo_inlining) MarkAsInliningEnabled();
-#if !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_ARM64 && V8_TURBOFAN_BACKEND
-  // TODO(mstarzinger): Bugs in ARM back-end block enabling typed pipeline.
   if (FLAG_turbo_types) MarkAsTypingEnabled();
-#endif
 
   if (!shared_info_.is_null()) {
     DCHECK(strict_mode() == SLOPPY);

src/flag-definitions.h

@@ -333,7 +333,11 @@ DEFINE_BOOL(trace_turbo_types, true, "trace generated TurboFan types")
 DEFINE_BOOL(trace_turbo_scheduler, false, "trace generated TurboFan scheduler")
 DEFINE_BOOL(turbo_verify, false, "verify TurboFan graphs at each phase")
 DEFINE_BOOL(turbo_stats, false, "print TurboFan statistics")
+#if !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_ARM64 && V8_TURBOFAN_BACKEND
 DEFINE_BOOL(turbo_types, true, "use typed lowering in TurboFan")
+#else
+DEFINE_BOOL(turbo_types, false, "use typed lowering in TurboFan")
+#endif
 DEFINE_BOOL(turbo_source_positions, false,
             "track source code positions when building TurboFan IR")
 DEFINE_BOOL(context_specialization, false,