Simplify v8/Isolate teardown.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index a3231e2c89a22013d6b377a79ef79b6303a6f773..a44627f588266edf6fc85c225bdb172d6ee2f83d 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -103,7 +103,8 @@ const char* DwVfpRegister::AllocationIndexToString(int index) {
 void CpuFeatures::Probe() {
   uint64_t standard_features = static_cast<unsigned>(
       OS::CpuFeaturesImpliedByPlatform()) | CpuFeaturesImpliedByCompiler();
-  ASSERT(supported_ == 0 || supported_ == standard_features);
+  ASSERT(supported_ == 0 ||
+         (supported_ & standard_features) == standard_features);

[jochen (gone - plz use gerrit), 2014/04/17 13:24:57]

unrelated?

[Sven Panne, 2014/04/22 07:28:36]

Alas, no: ARM has to be treated specially, which is quite unfortunate, but this
cleanup is better done in a separate CL. Furthermore, the ASSERT is more
correct: It makes sure that repeated Probe calls don't remove features.

 #ifdef DEBUG
   initialized_ = true;
 #endif