When checking against non-parametrized types use a cache to hold result tuples (class, result). Tha…

runtime/vm/code_patcher_x64.cc

Index: runtime/vm/code_patcher_x64.cc
===================================================================
--- runtime/vm/code_patcher_x64.cc	(revision 6245)
+++ runtime/vm/code_patcher_x64.cc	(working copy)
@@ -241,6 +241,24 @@
   return DartCallPattern::kCallPatternSize;
 }
 
+
+RawArray* CodePatcher::GetTypeTestArray(uword instruction_address) {
+  UNIMPLEMENTED();  // Untested.
+  Array& result = Array::Handle();
+  uint64_t* target_addr = reinterpret_cast<uint64_t*>(instruction_address + 1);

[regis, 2012/04/06 00:44:01]

I do not think offset +1 is correct.
You always told me not to submit untested code :-)

[srdjan, 2012/04/06 15:58:34]

Deleting the code in both, leaving UNIMPLEMENTED.

+  result ^= reinterpret_cast<RawObject*>(*target_addr);
+  return result.raw();
+}
+
+
+void CodePatcher::SetTypeTestArray(uword instruction_address,
+                                   const Array& value) {
+  UNIMPLEMENTED();  // Untested.
+  uint64_t* target_addr = reinterpret_cast<uint64_t*>(instruction_address + 1);

[regis, 2012/04/06 00:44:01]

ditto

[srdjan, 2012/04/06 15:58:34]

ditto

+  *target_addr = reinterpret_cast<uint64_t>(value.raw());
+}
+
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64