Compress deopt instructions in memory using variable length encoding.

runtime/vm/code_generator.cc

Index: runtime/vm/code_generator.cc
diff --git a/runtime/vm/code_generator.cc b/runtime/vm/code_generator.cc
index 03bcef9099dcbbe13d5cd51e1b1f138463975ecf..aa4671f44a0a3c8a62241817f89b3ed3ad9f7aba 100644
--- a/runtime/vm/code_generator.cc
+++ b/runtime/vm/code_generator.cc
@@ -1436,7 +1436,7 @@ void DeoptimizeAt(const Code& optimized_code, uword pc) {
   ASSERT(optimized_code.is_optimized());
   ICData::DeoptReasonId deopt_reason = ICData::kDeoptUnknown;
   uint32_t deopt_flags = 0;
-  const DeoptInfo& deopt_info = DeoptInfo::Handle(
+  const TypedData& deopt_info = TypedData::Handle(
       optimized_code.GetDeoptInfoAtPc(pc, &deopt_reason, &deopt_flags));
   ASSERT(!deopt_info.IsNull());
   const Function& function = Function::Handle(optimized_code.function());