deps: update V8 to 6.4.388.40

PR-URL: https://github.com/nodejs/node/pull/17489
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>

1 files changed, 11 insertions, 5 deletions

diff --git a/deps/v8/src/safepoint-table.h b/deps/v8/src/safepoint-table.h
index 057d5d8c5e..9f063bac20 100644
--- a/deps/v8/src/safepoint-table.h
+++ b/deps/v8/src/safepoint-table.h
@@ -18,14 +18,14 @@ class Register;
 
 class SafepointEntry BASE_EMBEDDED {
  public:
-  SafepointEntry() : info_(0), bits_(NULL), trampoline_pc_(-1) {}
+  SafepointEntry() : info_(0), bits_(nullptr), trampoline_pc_(-1) {}
 
   SafepointEntry(unsigned info, uint8_t* bits, int trampoline_pc)
       : info_(info), bits_(bits), trampoline_pc_(trampoline_pc) {
     DCHECK(is_valid());
   }
 
-  bool is_valid() const { return bits_ != NULL; }
+  bool is_valid() const { return bits_ != nullptr; }
 
   bool Equals(const SafepointEntry& other) const {
     return info_ == other.info_ && bits_ == other.bits_;
@@ -33,7 +33,7 @@ class SafepointEntry BASE_EMBEDDED {
 
   void Reset() {
     info_ = 0;
-    bits_ = NULL;
+    bits_ = nullptr;
   }
 
   int deoptimization_index() const {
@@ -90,6 +90,9 @@ class SafepointEntry BASE_EMBEDDED {
 class SafepointTable BASE_EMBEDDED {
  public:
   explicit SafepointTable(Code* code);
+  explicit SafepointTable(Address instruction_start,
+                          size_t safepoint_table_offset, uint32_t stack_slots,
+                          bool has_deopt = false);
 
   int size() const {
     return kHeaderSize + (length_ * (kFixedEntrySize + entry_size_));
@@ -113,7 +116,8 @@ class SafepointTable BASE_EMBEDDED {
     DCHECK(index < length_);
     unsigned info = Memory::uint32_at(GetInfoLocation(index));
     uint8_t* bits = &Memory::uint8_at(entries_ + (index * entry_size_));
-    int trampoline_pc = Memory::int_at(GetTrampolineLocation(index));
+    int trampoline_pc =
+        has_deopt_ ? Memory::int_at(GetTrampolineLocation(index)) : -1;
     return SafepointEntry(info, bits, trampoline_pc);
   }
 
@@ -151,12 +155,14 @@ class SafepointTable BASE_EMBEDDED {
                         uint8_t byte, int digits);
 
   DisallowHeapAllocation no_allocation_;
-  Code* code_;
+  Address instruction_start_;
+  uint32_t stack_slots_;
   unsigned length_;
   unsigned entry_size_;
 
   Address pc_and_deoptimization_indexes_;
   Address entries_;
+  bool has_deopt_;
 
   friend class SafepointTableBuilder;
   friend class SafepointEntry;