deps: update V8 to 5.7.492.69

PR-URL: https://github.com/nodejs/node/pull/11752
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

1 files changed, 44 insertions, 11 deletions

diff --git a/deps/v8/src/interpreter/bytecode-operands.h b/deps/v8/src/interpreter/bytecode-operands.h
index 55485027d3..f649d93a08 100644
--- a/deps/v8/src/interpreter/bytecode-operands.h
+++ b/deps/v8/src/interpreter/bytecode-operands.h
@@ -23,27 +23,33 @@ namespace interpreter {
   V(RegOutPair, OperandTypeInfo::kScalableSignedByte) \
   V(RegOutTriple, OperandTypeInfo::kScalableSignedByte)
 
-#define UNSIGNED_SCALAR_OPERAND_TYPE_LIST(V)          \
-  V(Flag8, OperandTypeInfo::kFixedUnsignedByte)       \
-  V(IntrinsicId, OperandTypeInfo::kFixedUnsignedByte) \
+#define SIGNED_SCALABLE_SCALAR_OPERAND_TYPE_LIST(V) \
+  V(Imm, OperandTypeInfo::kScalableSignedByte)
+
+#define UNSIGNED_SCALABLE_SCALAR_OPERAND_TYPE_LIST(V) \
   V(Idx, OperandTypeInfo::kScalableUnsignedByte)      \
   V(UImm, OperandTypeInfo::kScalableUnsignedByte)     \
-  V(RegCount, OperandTypeInfo::kScalableUnsignedByte) \
+  V(RegCount, OperandTypeInfo::kScalableUnsignedByte)
+
+#define UNSIGNED_FIXED_SCALAR_OPERAND_TYPE_LIST(V)    \
+  V(Flag8, OperandTypeInfo::kFixedUnsignedByte)       \
+  V(IntrinsicId, OperandTypeInfo::kFixedUnsignedByte) \
   V(RuntimeId, OperandTypeInfo::kFixedUnsignedShort)
 
-#define SIGNED_SCALAR_OPERAND_TYPE_LIST(V) \
-  V(Imm, OperandTypeInfo::kScalableSignedByte)
+// Carefully ordered for operand type range checks below.
+#define NON_REGISTER_OPERAND_TYPE_LIST(V)       \
+  INVALID_OPERAND_TYPE_LIST(V)                  \
+  UNSIGNED_FIXED_SCALAR_OPERAND_TYPE_LIST(V)    \
+  UNSIGNED_SCALABLE_SCALAR_OPERAND_TYPE_LIST(V) \
+  SIGNED_SCALABLE_SCALAR_OPERAND_TYPE_LIST(V)
 
+// Carefully ordered for operand type range checks below.
 #define REGISTER_OPERAND_TYPE_LIST(V) \
   REGISTER_INPUT_OPERAND_TYPE_LIST(V) \
   REGISTER_OUTPUT_OPERAND_TYPE_LIST(V)
 
-#define NON_REGISTER_OPERAND_TYPE_LIST(V) \
-  INVALID_OPERAND_TYPE_LIST(V)            \
-  UNSIGNED_SCALAR_OPERAND_TYPE_LIST(V)    \
-  SIGNED_SCALAR_OPERAND_TYPE_LIST(V)
-
 // The list of operand types used by bytecodes.
+// Carefully ordered for operand type range checks below.
 #define OPERAND_TYPE_LIST(V)        \
   NON_REGISTER_OPERAND_TYPE_LIST(V) \
   REGISTER_OPERAND_TYPE_LIST(V)
@@ -125,6 +131,33 @@ V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
                                            const OperandSize& operand_size);
 std::ostream& operator<<(std::ostream& os, const OperandType& operand_type);
 
+class BytecodeOperands {
+ public:
+  // Returns true if |accumulator_use| reads the accumulator.
+  static constexpr bool ReadsAccumulator(AccumulatorUse accumulator_use) {
+    return accumulator_use == AccumulatorUse::kRead ||
+           accumulator_use == AccumulatorUse::kReadWrite;
+  }
+
+  // Returns true if |accumulator_use| writes the accumulator.
+  static constexpr bool WritesAccumulator(AccumulatorUse accumulator_use) {
+    return accumulator_use == AccumulatorUse::kWrite ||
+           accumulator_use == AccumulatorUse::kReadWrite;
+  }
+
+  // Returns true if |operand_type| is a scalable signed byte.
+  static constexpr bool IsScalableSignedByte(OperandType operand_type) {
+    return operand_type >= OperandType::kImm &&
+           operand_type <= OperandType::kRegOutTriple;
+  }
+
+  // Returns true if |operand_type| is a scalable unsigned byte.
+  static constexpr bool IsScalableUnsignedByte(OperandType operand_type) {
+    return operand_type >= OperandType::kIdx &&
+           operand_type <= OperandType::kRegCount;
+  }
+};
+
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8