[compiler] Introduce initial StrictEqualStub.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 9e8364feca34c4593ceffaa63d039f1092623c71..7be35447ce3132366d7669ebf3a43d09afa9e66b 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -3179,10 +3179,17 @@ void CompareICStub::GenerateStrings(MacroAssembler* masm) {
 
   // Handle more complex cases in runtime.
   __ bind(&runtime);
-  __ Push(left, right);
   if (equality) {
-    __ TailCallRuntime(Runtime::kStringEquals);
+    {
+      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
+      __ Push(left, right);
+      __ CallRuntime(Runtime::kStringEqual);
+    }
+    __ LoadRoot(r1, Heap::kTrueValueRootIndex);
+    __ sub(r0, r0, r1);
+    __ Ret();
   } else {
+    __ Push(left, right);
     __ TailCallRuntime(Runtime::kStringCompare);
   }