deps: update V8 to 6.5.254.31

PR-URL: https://github.com/nodejs/node/pull/18453
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Yang Guo <yangguo@chromium.org>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

1 files changed, 16 insertions, 32 deletions

diff --git a/deps/v8/src/compiler/js-operator.h b/deps/v8/src/compiler/js-operator.h
index 94a9b1fdb6..3875234d5a 100644
--- a/deps/v8/src/compiler/js-operator.h
+++ b/deps/v8/src/compiler/js-operator.h
@@ -10,6 +10,7 @@
 #include "src/handles.h"
 #include "src/runtime/runtime.h"
 #include "src/type-hints.h"
+#include "src/vector-slot-pair.h"
 
 namespace v8 {
 namespace internal {
@@ -18,7 +19,6 @@ class AllocationSite;
 class BoilerplateDescription;
 class ConstantElementsPair;
 class SharedFunctionInfo;
-class FeedbackVector;
 
 namespace compiler {
 
@@ -59,32 +59,6 @@ std::ostream& operator<<(std::ostream&, CallFrequency);
 
 CallFrequency CallFrequencyOf(Operator const* op) WARN_UNUSED_RESULT;
 
-// Defines a pair of {FeedbackVector} and {FeedbackSlot}, which
-// is used to access the type feedback for a certain {Node}.
-class V8_EXPORT_PRIVATE VectorSlotPair {
- public:
-  VectorSlotPair();
-  VectorSlotPair(Handle<FeedbackVector> vector, FeedbackSlot slot)
-      : vector_(vector), slot_(slot) {}
-
-  bool IsValid() const { return !vector_.is_null() && !slot_.IsInvalid(); }
-
-  Handle<FeedbackVector> vector() const { return vector_; }
-  FeedbackSlot slot() const { return slot_; }
-
-  int index() const;
-
- private:
-  const Handle<FeedbackVector> vector_;
-  const FeedbackSlot slot_;
-};
-
-bool operator==(VectorSlotPair const&, VectorSlotPair const&);
-bool operator!=(VectorSlotPair const&, VectorSlotPair const&);
-
-size_t hash_value(VectorSlotPair const&);
-
-
 // Defines the flags for a JavaScript call forwarding parameters. This
 // is used as parameter by JSConstructForwardVarargs operators.
 class ConstructForwardVarargsParameters final {
@@ -187,8 +161,10 @@ class CallParameters final {
  public:
   CallParameters(size_t arity, CallFrequency frequency,
                  VectorSlotPair const& feedback,
-                 ConvertReceiverMode convert_mode)
+                 ConvertReceiverMode convert_mode,
+                 SpeculationMode speculation_mode)
       : bit_field_(ArityField::encode(arity) |
+                   SpeculationModeField::encode(speculation_mode) |
                    ConvertReceiverModeField::encode(convert_mode)),
         frequency_(frequency),
         feedback_(feedback) {}
@@ -200,6 +176,10 @@ class CallParameters final {
   }
   VectorSlotPair const& feedback() const { return feedback_; }
 
+  SpeculationMode speculation_mode() const {
+    return SpeculationModeField::decode(bit_field_);
+  }
+
   bool operator==(CallParameters const& that) const {
     return this->bit_field_ == that.bit_field_ &&
            this->frequency_ == that.frequency_ &&
@@ -212,7 +192,8 @@ class CallParameters final {
     return base::hash_combine(p.bit_field_, p.frequency_, p.feedback_);
   }
 
-  typedef BitField<size_t, 0, 29> ArityField;
+  typedef BitField<size_t, 0, 28> ArityField;
+  typedef BitField<SpeculationMode, 28, 1> SpeculationModeField;
   typedef BitField<ConvertReceiverMode, 29, 2> ConvertReceiverModeField;
 
   uint32_t const bit_field_;
@@ -693,11 +674,13 @@ class V8_EXPORT_PRIVATE JSOperatorBuilder final
   const Operator* Call(
       size_t arity, CallFrequency frequency = CallFrequency(),
       VectorSlotPair const& feedback = VectorSlotPair(),
-      ConvertReceiverMode convert_mode = ConvertReceiverMode::kAny);
+      ConvertReceiverMode convert_mode = ConvertReceiverMode::kAny,
+      SpeculationMode speculation_mode = SpeculationMode::kAllowSpeculation);
   const Operator* CallWithArrayLike(CallFrequency frequency);
   const Operator* CallWithSpread(
       uint32_t arity, CallFrequency frequency = CallFrequency(),
-      VectorSlotPair const& feedback = VectorSlotPair());
+      VectorSlotPair const& feedback = VectorSlotPair(),
+      SpeculationMode speculation_mode = SpeculationMode::kAllowSpeculation);
   const Operator* CallRuntime(Runtime::FunctionId id);
   const Operator* CallRuntime(Runtime::FunctionId id, size_t arity);
   const Operator* CallRuntime(const Runtime::Function* function, size_t arity);
@@ -761,8 +744,9 @@ class V8_EXPORT_PRIVATE JSOperatorBuilder final
 
   // Used to implement Ignition's RestoreGeneratorState bytecode.
   const Operator* GeneratorRestoreContinuation();
-  // Used to implement Ignition's RestoreGeneratorRegisters bytecode.
+  // Used to implement Ignition's ResumeGenerator bytecode.
   const Operator* GeneratorRestoreRegister(int index);
+  const Operator* GeneratorRestoreInputOrDebugPos();
 
   const Operator* StackCheck();
   const Operator* Debugger();