[runtime] Unify and fix the strict equality comparison.

src/arm64/code-stubs-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/bootstrapper.h"
@@ skipping 634 matching lines @@
 
   // Never fall through to here.
   if (FLAG_debug_code) {
     __ Unreachable();
   }
 
   __ Bind(&slow);
 
   __ Push(lhs, rhs);
   // Figure out which native to call and setup the arguments.
-  Builtins::JavaScript native;
-  if (cond == eq) {
-    native = strict() ? Builtins::STRICT_EQUALS : Builtins::EQUALS;
+  if (cond == eq && strict()) {
+    __ TailCallRuntime(Runtime::kStrictEquals, 2, 1);
   } else {
-    native =
-        is_strong(strength()) ? Builtins::COMPARE_STRONG : Builtins::COMPARE;
-    int ncr;  // NaN compare result
-    if ((cond == lt) || (cond == le)) {
-      ncr = GREATER;
+    Builtins::JavaScript native;
+    if (cond == eq) {
+      native = Builtins::EQUALS;
     } else {
-      DCHECK((cond == gt) || (cond == ge));  // remaining cases
-      ncr = LESS;
+      native =
+          is_strong(strength()) ? Builtins::COMPARE_STRONG : Builtins::COMPARE;
+      int ncr;  // NaN compare result
+      if ((cond == lt) || (cond == le)) {
+        ncr = GREATER;
+      } else {
+        DCHECK((cond == gt) || (cond == ge));  // remaining cases
+        ncr = LESS;
+      }
+      __ Mov(x10, Smi::FromInt(ncr));
+      __ Push(x10);
     }
-    __ Mov(x10, Smi::FromInt(ncr));
-    __ Push(x10);
+
+    // Call the native; it returns -1 (less), 0 (equal), or 1 (greater)
+    // tagged as a small integer.
+    __ InvokeBuiltin(native, JUMP_FUNCTION);
   }
 
-  // Call the native; it returns -1 (less), 0 (equal), or 1 (greater)
-  // tagged as a small integer.
-  __ InvokeBuiltin(native, JUMP_FUNCTION);
-
   __ Bind(&miss);
   GenerateMiss(masm);
 }
 
 
 void StoreBufferOverflowStub::Generate(MacroAssembler* masm) {
   CPURegList saved_regs = kCallerSaved;
   CPURegList saved_fp_regs = kCallerSavedFP;
 
   // We don't allow a GC during a store buffer overflow so there is no need to
@@ skipping 5304 matching lines @@
                            MemOperand(fp, 6 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64