1 files changed, 26 insertions, 14 deletions

diff --git a/deps/v8/src/base/flags.h b/deps/v8/src/base/flags.h
index 3bec12cb88..c1637de81c 100644
--- a/deps/v8/src/base/flags.h
+++ b/deps/v8/src/base/flags.h
@@ -27,15 +27,15 @@ class Flags final {
   typedef T flag_type;
   typedef S mask_type;
 
-  Flags() : mask_(0) {}
-  Flags(flag_type flag)  // NOLINT(runtime/explicit)
+  constexpr Flags() : mask_(0) {}
+  constexpr Flags(flag_type flag)  // NOLINT(runtime/explicit)
       : mask_(static_cast<S>(flag)) {}
-  explicit Flags(mask_type mask) : mask_(static_cast<S>(mask)) {}
+  constexpr explicit Flags(mask_type mask) : mask_(static_cast<S>(mask)) {}
 
-  bool operator==(flag_type flag) const {
+  constexpr bool operator==(flag_type flag) const {
     return mask_ == static_cast<S>(flag);
   }
-  bool operator!=(flag_type flag) const {
+  constexpr bool operator!=(flag_type flag) const {
     return mask_ != static_cast<S>(flag);
   }
 
@@ -52,22 +52,34 @@ class Flags final {
     return *this;
   }
 
-  Flags operator&(const Flags& flags) const { return Flags(*this) &= flags; }
-  Flags operator|(const Flags& flags) const { return Flags(*this) |= flags; }
-  Flags operator^(const Flags& flags) const { return Flags(*this) ^= flags; }
+  constexpr Flags operator&(const Flags& flags) const {
+    return Flags(*this) &= flags;
+  }
+  constexpr Flags operator|(const Flags& flags) const {
+    return Flags(*this) |= flags;
+  }
+  constexpr Flags operator^(const Flags& flags) const {
+    return Flags(*this) ^= flags;
+  }
 
   Flags& operator&=(flag_type flag) { return operator&=(Flags(flag)); }
   Flags& operator|=(flag_type flag) { return operator|=(Flags(flag)); }
   Flags& operator^=(flag_type flag) { return operator^=(Flags(flag)); }
 
-  Flags operator&(flag_type flag) const { return operator&(Flags(flag)); }
-  Flags operator|(flag_type flag) const { return operator|(Flags(flag)); }
-  Flags operator^(flag_type flag) const { return operator^(Flags(flag)); }
+  constexpr Flags operator&(flag_type flag) const {
+    return operator&(Flags(flag));
+  }
+  constexpr Flags operator|(flag_type flag) const {
+    return operator|(Flags(flag));
+  }
+  constexpr Flags operator^(flag_type flag) const {
+    return operator^(Flags(flag));
+  }
 
-  Flags operator~() const { return Flags(~mask_); }
+  constexpr Flags operator~() const { return Flags(~mask_); }
 
-  operator mask_type() const { return mask_; }
-  bool operator!() const { return !mask_; }
+  constexpr operator mask_type() const { return mask_; }
+  constexpr bool operator!() const { return !mask_; }
 
   friend size_t hash_value(const Flags& flags) { return flags.mask_; }