Revert of Remove SIMD.js from V8.

src/arm64/code-stubs-arm64.cc

Index: src/arm64/code-stubs-arm64.cc
diff --git a/src/arm64/code-stubs-arm64.cc b/src/arm64/code-stubs-arm64.cc
index e9b90cbc6364d121a3185921ba0c629e258e5126..9da151d46e0dd5a92ffebe97a5dc8e161993034d 100644
--- a/src/arm64/code-stubs-arm64.cc
+++ b/src/arm64/code-stubs-arm64.cc
@@ -163,6 +163,9 @@
     // Call runtime on identical symbols since we need to throw a TypeError.
     __ Cmp(right_type, SYMBOL_TYPE);
     __ B(eq, slow);
+    // Call runtime on identical SIMD values since we must throw a TypeError.
+    __ Cmp(right_type, SIMD128_VALUE_TYPE);
+    __ B(eq, slow);
   } else if (cond == eq) {
     __ JumpIfHeapNumber(right, &heap_number);
   } else {
@@ -173,6 +176,9 @@
     __ B(ge, slow);
     // Call runtime on identical symbols since we need to throw a TypeError.
     __ Cmp(right_type, SYMBOL_TYPE);
+    __ B(eq, slow);
+    // Call runtime on identical SIMD values since we must throw a TypeError.
+    __ Cmp(right_type, SIMD128_VALUE_TYPE);
     __ B(eq, slow);
     // Normally here we fall through to return_equal, but undefined is
     // special: (undefined == undefined) == true, but