[regexp] Migrate constructor and compile to CSA

src/code-stub-assembler.h

 // Copyright 2016 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.
 
 #ifndef V8_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 688 matching lines @@
                           Int32Constant(0));
   }
 
   // Returns true if any of the |T|'s bits in given |word| are set.
   template <typename T>
   Node* IsSetWord(Node* word) {
     return WordNotEqual(WordAnd(word, IntPtrConstant(T::kMask)),
                         IntPtrConstant(0));
   }
 
+  // Returns true if any of the mask's bits in given |word| are set.
+  Node* IsSetWord(Node* word, uint32_t mask) {
+    return WordNotEqual(WordAnd(word, Int32Constant(mask)), Int32Constant(0));
+  }
+
   void SetCounter(StatsCounter* counter, int value);
   void IncrementCounter(StatsCounter* counter, int delta);
   void DecrementCounter(StatsCounter* counter, int delta);
 
   void Increment(Variable& variable, int value = 1,
                  ParameterMode mode = INTPTR_PARAMETERS);
 
   // Generates "if (false) goto label" code. Useful for marking a label as
   // "live" to avoid assertion failures during graph building. In the resulting
   // code this check will be eliminated.
@@ skipping 404 matching lines @@
   }
 #else
 #define CSA_SLOW_ASSERT(csa, x) ((void)0)
 #endif
 
 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags);
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_