Ensure that all goto instructions have deoptimization target.

runtime/vm/flow_graph_compiler_mips.cc

Index: runtime/vm/flow_graph_compiler_mips.cc
diff --git a/runtime/vm/flow_graph_compiler_mips.cc b/runtime/vm/flow_graph_compiler_mips.cc
index 1a88c4d5ff95ee5e6961ae0d45cbe5ff662f911b..6facfc27a19a4dbe8788820984c9a4bb3389ced6 100644
--- a/runtime/vm/flow_graph_compiler_mips.cc
+++ b/runtime/vm/flow_graph_compiler_mips.cc
@@ -127,7 +127,6 @@ RawSubtypeTestCache* FlowGraphCompiler::GenerateInlineInstanceof(
 
 
 void FlowGraphCompiler::GenerateInstanceOf(intptr_t token_pos,
-                                           intptr_t deopt_id,
                                            const AbstractType& type,
                                            bool negate_result,
                                            LocationSummary* locs) {
@@ -148,9 +147,18 @@ void FlowGraphCompiler::EmitInstructionPrologue(Instruction* instr) {
   if (!is_optimizing()) {
     if (FLAG_enable_type_checks && instr->IsAssertAssignable()) {
       AssertAssignableInstr* assert = instr->AsAssertAssignable();
-      AddCurrentDescriptor(PcDescriptors::kDeoptBefore,
+      AddCurrentDescriptor(PcDescriptors::kDeopt,
                            assert->deopt_id(),
                            assert->token_pos());
+    } else if (instr->IsGuardField()) {
+      GuardFieldInstr* guard = instr->AsGuardField();
+      AddCurrentDescriptor(PcDescriptors::kDeopt,
+                           guard->deopt_id(),
+                           Scanner::kDummyTokenIndex);
+    } else if (instr->CanBeDeoptimizationTarget()) {
+      AddCurrentDescriptor(PcDescriptors::kDeopt,
+                           instr->deopt_id(),
+                           Scanner::kDummyTokenIndex);
     }
     AllocateRegistersLocally(instr);
   }