Revert "[Arguments] Merge (7442,7496] from bleeding_edge."

src/ia32/cpu-ia32.cc

Index: src/ia32/cpu-ia32.cc
diff --git a/src/ia32/cpu-ia32.cc b/src/ia32/cpu-ia32.cc
index 615dbfed2b69017152a34567a3f9c7b5c2d120d8..286ed7b80137255cab9c495614733bcc42413fba 100644
--- a/src/ia32/cpu-ia32.cc
+++ b/src/ia32/cpu-ia32.cc
@@ -42,12 +42,12 @@ namespace v8 {
 namespace internal {
 
 void CPU::Setup() {
-  CpuFeatures::Probe();
-}
-
-
-bool CPU::SupportsCrankshaft() {
-  return CpuFeatures::IsSupported(SSE2);
+  CpuFeatures* cpu_features = Isolate::Current()->cpu_features();
+  cpu_features->Clear();
+  cpu_features->Probe(true);
+  if (!cpu_features->IsSupported(SSE2) || Serializer::enabled()) {
+    V8::DisableCrankshaft();
+  }
 }