Revert of [regexp] Remove remainder of native RegExpExecStub

src/regexp/arm/regexp-macro-assembler-arm.h

Index: src/regexp/arm/regexp-macro-assembler-arm.h
diff --git a/src/regexp/arm/regexp-macro-assembler-arm.h b/src/regexp/arm/regexp-macro-assembler-arm.h
index a522f53d4ac6f357bbd3058574a6105dcbada45e..6c910644b2c14bf5ab23776b7f7aa5bc1a7b28f2 100644
--- a/src/regexp/arm/regexp-macro-assembler-arm.h
+++ b/src/regexp/arm/regexp-macro-assembler-arm.h
@@ -103,8 +103,9 @@
   static const int kStoredRegisters = kFramePointer;
   // Return address (stored from link register, read into pc on return).
   static const int kReturnAddress = kStoredRegisters + 8 * kPointerSize;
+  static const int kSecondaryReturnAddress = kReturnAddress + kPointerSize;
   // Stack parameters placed by caller.
-  static const int kRegisterOutput = kReturnAddress + kPointerSize;
+  static const int kRegisterOutput = kSecondaryReturnAddress + kPointerSize;
   static const int kNumOutputRegisters = kRegisterOutput + kPointerSize;
   static const int kStackHighEnd = kNumOutputRegisters + kPointerSize;
   static const int kDirectCall = kStackHighEnd + kPointerSize;