[compiler] Introduce initial StrictEqualStub.

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 32250a861159880509ba61a7a5aade5f8f49a79d..147881f7cf9fabeff5e4d0c8873c0ff6f4391341 100644
--- a/src/arm64/code-stubs-arm64.cc
+++ b/src/arm64/code-stubs-arm64.cc
@@ -2868,10 +2868,17 @@ void CompareICStub::GenerateStrings(MacroAssembler* masm) {
 
   // Handle more complex cases in runtime.
   __ Bind(&runtime);
-  __ Push(lhs, rhs);
   if (equality) {
-    __ TailCallRuntime(Runtime::kStringEquals);
+    {
+      FrameScope scope(masm, StackFrame::INTERNAL);
+      __ Push(lhs, rhs);
+      __ CallRuntime(Runtime::kStringEqual);
+    }
+    __ LoadRoot(x1, Heap::kTrueValueRootIndex);
+    __ Sub(x0, x0, x1);
+    __ Ret();
   } else {
+    __ Push(lhs, rhs);
     __ TailCallRuntime(Runtime::kStringCompare);
   }