1 files changed, 6 insertions, 0 deletions
diff --git a/deps/v8/src/arm64/constants-arm64.h b/deps/v8/src/arm64/constants-arm64.h
index 406b139a50..1b87ce572c 100644
--- a/deps/v8/src/arm64/constants-arm64.h
+++ b/deps/v8/src/arm64/constants-arm64.h
@@ -26,6 +26,7 @@ STATIC_ASSERT(sizeof(1L) == sizeof(int64_t));
 namespace v8 {
 namespace internal {
 
+constexpr size_t kMaxPCRelativeCodeRangeInMB = 128;
 
 const unsigned kInstructionSize = 4;
 const unsigned kInstructionSizeLog2 = 2;
@@ -140,6 +141,11 @@ const unsigned kFloat16MantissaBits = 10;
 const unsigned kFloat16ExponentBits = 5;
 const unsigned kFloat16ExponentBias = 15;
 
+// Actual value of root register is offset from the root array's start
+// to take advantage of negative displacement values.
+// TODO(sigurds): Choose best value.
+constexpr int kRootRegisterBias = 256;
+
 typedef uint16_t float16;
 
 #define INSTRUCTION_FIELDS_LIST(V_)                     \