[compiler] Introduce code stubs for string relational comparisons.

src/code-factory.cc

 // Copyright 2014 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/code-factory.h"
 
 #include "src/bootstrapper.h"
 #include "src/ic/ic.h"
 
 namespace v8 {
@@ skipping 219 matching lines @@
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 // static
 Callable CodeFactory::StringAdd(Isolate* isolate, StringAddFlags flags,
                                 PretenureFlag pretenure_flag) {
   StringAddStub stub(isolate, flags, pretenure_flag);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
-
-// static
-Callable CodeFactory::StringCompare(Isolate* isolate) {
-  StringCompareStub stub(isolate);
-  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
-}
-
 // static
+Callable CodeFactory::StringCompare(Isolate* isolate, Token::Value token) {
+  switch (token) {
+    case Token::EQ:
+    case Token::EQ_STRICT:
+      return StringEqual(isolate);
+    case Token::NE:
+    case Token::NE_STRICT:
+      return StringNotEqual(isolate);
+    case Token::LT:
+      return StringLessThan(isolate);
+    case Token::GT:
+      return StringGreaterThan(isolate);
+    case Token::LTE:
+      return StringLessThanOrEqual(isolate);
+    case Token::GTE:
+      return StringGreaterThanOrEqual(isolate);
+    default:
+      break;
+  }
+  UNREACHABLE();
+  return StringEqual(isolate);
+}
+
+// static
 Callable CodeFactory::StringEqual(Isolate* isolate) {
   StringEqualStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 // static
 Callable CodeFactory::StringNotEqual(Isolate* isolate) {
   StringNotEqualStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 // static
+Callable CodeFactory::StringLessThan(Isolate* isolate) {
+  StringLessThanStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+// static
+Callable CodeFactory::StringLessThanOrEqual(Isolate* isolate) {
+  StringLessThanOrEqualStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+// static
+Callable CodeFactory::StringGreaterThan(Isolate* isolate) {
+  StringGreaterThanStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+// static
+Callable CodeFactory::StringGreaterThanOrEqual(Isolate* isolate) {
+  StringGreaterThanOrEqualStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+// static
 Callable CodeFactory::SubString(Isolate* isolate) {
   SubStringStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 
 // static
 Callable CodeFactory::Typeof(Isolate* isolate) {
   TypeofStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
@@ skipping 141 matching lines @@
 // static
 Callable CodeFactory::InterpreterCEntry(Isolate* isolate, int result_size) {
   // Note: If we ever use fpregs in the interpreter then we will need to
   // save fpregs too.
   CEntryStub stub(isolate, result_size, kDontSaveFPRegs, kArgvInRegister);
   return Callable(stub.GetCode(), InterpreterCEntryDescriptor(isolate));
 }
 
 }  // namespace internal
 }  // namespace v8