Ensure that all goto instructions have deoptimization target.

runtime/vm/flow_graph_compiler_arm.cc

Index: runtime/vm/flow_graph_compiler_arm.cc
diff --git a/runtime/vm/flow_graph_compiler_arm.cc b/runtime/vm/flow_graph_compiler_arm.cc
index ecbb5484112d2f3331daf995c15c7a677c60da75..5b0371a6407f16673c308cc7be101c54e5bfcaf3 100644
--- a/runtime/vm/flow_graph_compiler_arm.cc
+++ b/runtime/vm/flow_graph_compiler_arm.cc
@@ -342,9 +342,18 @@ 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);
   }
@@ -818,14 +827,13 @@ void FlowGraphCompiler::GenerateDartCall(intptr_t deopt_id,
   RecordSafepoint(locs);
   // Marks either the continuation point in unoptimized code or the
   // deoptimization point in optimized code, after call.
+  const intptr_t deopt_id_after = Isolate::ToDeoptAfter(deopt_id);
   if (is_optimizing()) {
-    AddDeoptIndexAtCall(deopt_id, token_pos);
+    AddDeoptIndexAtCall(deopt_id_after, token_pos);
   } else {
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
-    AddCurrentDescriptor(PcDescriptors::kDeoptAfter,
-                         deopt_id,
-                         token_pos);
+    AddCurrentDescriptor(PcDescriptors::kDeopt, deopt_id_after, token_pos);
   }
 }