Revert of Version 5.0.71.10 (cherry-pick)

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 79f75fadf21d1a982e55502bd87c01f649e4edce..2565c45d310f7b0bf5196d0065aba0a7d00a71ac 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -1442,24 +1442,21 @@
   }
   __ bind(&runtime_call);
 
+  // Push arguments below the return address.
+  __ pop(ecx);
+  __ push(edx);
+  __ push(eax);
+
+  // Figure out which native to call and setup the arguments.
   if (cc == equal) {
-    {
-      FrameScope scope(masm, StackFrame::INTERNAL);
-      __ Push(edx);
-      __ Push(eax);
-      __ CallRuntime(strict() ? Runtime::kStrictEqual : Runtime::kEqual);
-    }
-    // Turn true into 0 and false into some non-zero value.
-    STATIC_ASSERT(EQUAL == 0);
-    __ sub(eax, Immediate(isolate()->factory()->true_value()));
-    __ Ret();
+    __ push(ecx);
+    __ TailCallRuntime(strict() ? Runtime::kStrictEquals : Runtime::kEquals);
   } else {
-    // Push arguments below the return address.
-    __ pop(ecx);
-    __ push(edx);
-    __ push(eax);
     __ push(Immediate(Smi::FromInt(NegativeComparisonResult(cc))));
+
+    // Restore return address on the stack.
     __ push(ecx);
+
     // Call the native; it returns -1 (less), 0 (equal), or 1 (greater)
     // tagged as a small integer.
     __ TailCallRuntime(Runtime::kCompare);