[ignition/turbofan] Wrap bytecode liveness bitvectors

test/unittests/compiler/bytecode-analysis-unittest.cc

 // Copyright 2015 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"
 
 #include "src/compiler/bytecode-analysis.h"
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-decoder.h"
@@ skipping 19 matching lines @@
 
     TestWithIsolateAndZone::SetUpTestCase();
   }
 
   static void TearDownTestCase() {
     TestWithIsolateAndZone::TearDownTestCase();
     i::FLAG_ignition_peephole = old_FLAG_ignition_peephole_;
     i::FLAG_ignition_reo = old_FLAG_ignition_reo_;
   }
 
-  std::string ToLivenessString(const BitVector* liveness) const {
+  std::string ToLivenessString(const BytecodeLivenessState* liveness) const {
+    const BitVector& bit_vector = liveness->bit_vector();
+
     std::string out;
-    out.resize(liveness->length());
-    for (int i = 0; i < liveness->length(); ++i) {
-      if (liveness->Contains(i)) {
+    out.resize(bit_vector.length());
+    for (int i = 0; i < bit_vector.length(); ++i) {
+      if (bit_vector.Contains(i)) {
         out[i] = 'L';
       } else {
         out[i] = '.';
       }
     }
     return out;
   }
 
   void EnsureLivenessMatches(
       Handle<BytecodeArray> bytecode,
@@ skipping 351 matching lines @@
   expected_liveness.emplace_back("...L", "....");
 
   Handle<BytecodeArray> bytecode = builder.ToBytecodeArray(isolate());
 
   EnsureLivenessMatches(bytecode, expected_liveness);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8