1 files changed, 21 insertions, 1 deletions
diff --git a/deps/v8/src/interpreter/bytecode-operands.h b/deps/v8/src/interpreter/bytecode-operands.h
index 68e6800169..42d7445df0 100644
--- a/deps/v8/src/interpreter/bytecode-operands.h
+++ b/deps/v8/src/interpreter/bytecode-operands.h
@@ -114,8 +114,10 @@ enum class ImplicitRegisterUse : uint8_t {
   kNone = 0,
   kReadAccumulator = 1 << 0,
   kWriteAccumulator = 1 << 1,
-  kWriteShortStar = 1 << 2,
+  kClobberAccumulator = 1 << 2,
+  kWriteShortStar = 1 << 3,
   kReadWriteAccumulator = kReadAccumulator | kWriteAccumulator,
+  kReadAndClobberAccumulator = kReadAccumulator | kClobberAccumulator,
   kReadAccumulatorWriteShortStar = kReadAccumulator | kWriteShortStar
 };
 
@@ -187,6 +189,24 @@ class BytecodeOperands : public AllStatic {
            ImplicitRegisterUse::kWriteAccumulator;
   }
 
+  // Returns true if |implicit_register_use| clobbers the
+  // accumulator.
+  static constexpr bool ClobbersAccumulator(
+      ImplicitRegisterUse implicit_register_use) {
+    return (implicit_register_use & ImplicitRegisterUse::kClobberAccumulator) ==
+           ImplicitRegisterUse::kClobberAccumulator;
+  }
+
+  // Returns true if |implicit_register_use| writes or clobbers the
+  // accumulator.
+  static constexpr bool WritesOrClobbersAccumulator(
+      ImplicitRegisterUse implicit_register_use) {
+    return (implicit_register_use &
+            (ImplicitRegisterUse::kWriteAccumulator |
+             ImplicitRegisterUse::kClobberAccumulator)) !=
+           ImplicitRegisterUse::kNone;
+  }
+
   // Returns true if |implicit_register_use| writes to a
   // register not specified by an operand.
   static constexpr bool WritesImplicitRegister(