[builtins] Properly optimize TypedArray/DataView accessors.

src/builtins.h

Index: src/builtins.h
diff --git a/src/builtins.h b/src/builtins.h
index f84993b25d9014779998db54423fb18185d2af42..b996bd964c637136dc695cebb33c3a41195292df 100644
--- a/src/builtins.h
+++ b/src/builtins.h
@@ -78,6 +78,9 @@ inline bool operator&(BuiltinExtraArguments lhs, BuiltinExtraArguments rhs) {
                                                                \
   V(DataViewConstructor, kNone)                                \
   V(DataViewConstructor_ConstructStub, kTargetAndNewTarget)    \
+  V(DataViewPrototypeGetBuffer, kNone)                         \
+  V(DataViewPrototypeGetByteLength, kNone)                     \
+  V(DataViewPrototypeGetByteOffset, kNone)                     \
                                                                \
   V(DateConstructor, kNone)                                    \
   V(DateConstructor_ConstructStub, kTargetAndNewTarget)        \
@@ -182,6 +185,8 @@ inline bool operator&(BuiltinExtraArguments lhs, BuiltinExtraArguments rhs) {
   V(SymbolConstructor, kNone)                                  \
   V(SymbolConstructor_ConstructStub, kTarget)                  \
                                                                \
+  V(TypedArrayPrototypeBuffer, kNone)                          \
+                                                               \
   V(HandleApiCall, kTargetAndNewTarget)                        \
   V(HandleApiCallAsFunction, kNone)                            \
   V(HandleApiCallAsConstructor, kNone)                         \
@@ -320,24 +325,27 @@ inline bool operator&(BuiltinExtraArguments lhs, BuiltinExtraArguments rhs) {
   CODE_AGE_LIST_WITH_ARG(DECLARE_CODE_AGE_BUILTIN, V)
 
 // Define list of builtins implemented in TurboFan (with JS linkage).
-#define BUILTIN_LIST_T(V)            \
-  V(FunctionPrototypeHasInstance, 2) \
-  V(GeneratorPrototypeNext, 2)       \
-  V(GeneratorPrototypeReturn, 2)     \
-  V(GeneratorPrototypeThrow, 2)      \
-  V(MathCeil, 2)                     \
-  V(MathClz32, 2)                    \
-  V(MathFloor, 2)                    \
-  V(MathLog, 2)                      \
-  V(MathRound, 2)                    \
-  V(MathSqrt, 2)                     \
-  V(MathTrunc, 2)                    \
-  V(ObjectHasOwnProperty, 2)         \
-  V(ArrayIsArray, 2)                 \
-  V(StringFromCharCode, 2)           \
-  V(StringPrototypeCharAt, 2)        \
-  V(StringPrototypeCharCodeAt, 2)    \
-  V(AtomicsLoad, 3)                  \
+#define BUILTIN_LIST_T(V)             \
+  V(FunctionPrototypeHasInstance, 2)  \
+  V(GeneratorPrototypeNext, 2)        \
+  V(GeneratorPrototypeReturn, 2)      \
+  V(GeneratorPrototypeThrow, 2)       \
+  V(MathCeil, 2)                      \
+  V(MathClz32, 2)                     \
+  V(MathFloor, 2)                     \
+  V(MathLog, 2)                       \
+  V(MathRound, 2)                     \
+  V(MathSqrt, 2)                      \
+  V(MathTrunc, 2)                     \
+  V(ObjectHasOwnProperty, 2)          \
+  V(ArrayIsArray, 2)                  \
+  V(StringFromCharCode, 2)            \
+  V(StringPrototypeCharAt, 2)         \
+  V(StringPrototypeCharCodeAt, 2)     \
+  V(TypedArrayPrototypeByteLength, 1) \
+  V(TypedArrayPrototypeByteOffset, 1) \
+  V(TypedArrayPrototypeLength, 1)     \
+  V(AtomicsLoad, 3)                   \
   V(AtomicsStore, 4)
 
 // Define list of builtin handlers implemented in assembly.
@@ -670,6 +678,16 @@ class Builtins {
 
   static void Generate_StringConstructor(MacroAssembler* masm);
   static void Generate_StringConstructor_ConstructStub(MacroAssembler* masm);
+
+  // ES6 section 22.2.3.2 get %TypedArray%.prototype.byteLength
+  static void Generate_TypedArrayPrototypeByteLength(
+      CodeStubAssembler* assembler);
+  // ES6 section 22.2.3.3 get %TypedArray%.prototype.byteOffset
+  static void Generate_TypedArrayPrototypeByteOffset(
+      CodeStubAssembler* assembler);
+  // ES6 section 22.2.3.18 get %TypedArray%.prototype.length
+  static void Generate_TypedArrayPrototypeLength(CodeStubAssembler* assembler);
+
   static void Generate_OnStackReplacement(MacroAssembler* masm);
   static void Generate_InterruptCheck(MacroAssembler* masm);
   static void Generate_StackCheck(MacroAssembler* masm);