Finish implementing lazy deoptimization (ia32, x64). Ran tests with --deoptimize-alot.

runtime/vm/code_patcher_ia32.cc

Index: runtime/vm/code_patcher_ia32.cc
===================================================================
--- runtime/vm/code_patcher_ia32.cc	(revision 12092)
+++ runtime/vm/code_patcher_ia32.cc	(working copy)
@@ -260,21 +260,13 @@
 }
 
 
-RawArray* CodePatcher::GetTypeTestArray(uword instruction_address) {
-  Array& result = Array::Handle();
-  uint32_t* target_addr = reinterpret_cast<uint32_t*>(instruction_address + 1);
-  result ^= reinterpret_cast<RawObject*>(*target_addr);
-  return result.raw();
+void CodePatcher::InsertCallAt(uword start, uword target) {
+  *reinterpret_cast<uint8_t*>(start) = 0xE8;
+  CallPattern call(start);
+  call.SetTargetAddress(target);
 }
 
 
-void CodePatcher::SetTypeTestArray(uword instruction_address,
-                                   const Array& value) {
-  uint32_t* target_addr = reinterpret_cast<uint32_t*>(instruction_address + 1);
-  *target_addr = reinterpret_cast<uint32_t>(value.raw());
-}
-
-
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32