[turbofan] Less aggressively insert SOFT deopts for property access.

src/compiler/js-native-context-specialization.cc

Index: src/compiler/js-native-context-specialization.cc
diff --git a/src/compiler/js-native-context-specialization.cc b/src/compiler/js-native-context-specialization.cc
index fb8e53b034878cc5ec9d203f2832ad98ae3b9db8..a2fe6c182957661110134a04f28acd06f5df7fab 100644
--- a/src/compiler/js-native-context-specialization.cc
+++ b/src/compiler/js-native-context-specialization.cc
@@ -573,6 +573,7 @@ Reduction JSNativeContextSpecialization::ReduceNamedAccess(
       Object* maybe_constructor = receiver_map->GetConstructor();
       // Detached global proxies have |null| as their constructor.
       if (maybe_constructor->IsJSFunction() &&
+          JSFunction::cast(maybe_constructor)->has_context() &&
           JSFunction::cast(maybe_constructor)->native_context() ==
               *native_context()) {
         return ReduceGlobalAccess(node, receiver, value, name, access_mode,
@@ -799,17 +800,6 @@ Reduction JSNativeContextSpecialization::ReduceNamedAccessFromNexus(
     }
   }
 
-  // Check if the {nexus} reports type feedback for the IC.
-  if (nexus.IsUninitialized()) {
-    if ((flags() & kDeoptimizationEnabled) &&
-        (flags() & kBailoutOnUninitialized)) {
-      return ReduceSoftDeoptimize(
-          node,
-          DeoptimizeReason::kInsufficientTypeFeedbackForGenericNamedAccess);
-    }
-    return NoChange();
-  }
-
   // Extract receiver maps from the IC using the {nexus}.
   MapHandleList receiver_maps;
   if (!ExtractReceiverMaps(receiver, effect, nexus, &receiver_maps)) {
@@ -1194,17 +1184,6 @@ Reduction JSNativeContextSpecialization::ReduceKeyedAccess(
     }
   }
 
-  // Check if the {nexus} reports type feedback for the IC.
-  if (nexus.IsUninitialized()) {
-    if ((flags() & kDeoptimizationEnabled) &&
-        (flags() & kBailoutOnUninitialized)) {
-      return ReduceSoftDeoptimize(
-          node,
-          DeoptimizeReason::kInsufficientTypeFeedbackForGenericKeyedAccess);
-    }
-    return NoChange();
-  }
-
   // Extract receiver maps from the {nexus}.
   MapHandleList receiver_maps;
   if (!ExtractReceiverMaps(receiver, effect, nexus, &receiver_maps)) {
@@ -2250,7 +2229,10 @@ bool JSNativeContextSpecialization::ExtractReceiverMaps(
     }
     return true;
   }
-  return false;
+  // Check if the {nexus} actually reports feedback for the IC. We return
+  // true if the IC is still uninitialized, which translates to a SOFT
+  // deoptimization exit in the callers.
+  return nexus.IsUninitialized();
 }
 
 bool JSNativeContextSpecialization::InferReceiverMaps(