[turbofan] Variable liveness analysis for deopt

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/mips.gni")
 
 # Because standalone V8 builds are not supported, assume this is part of a
 # Chromium build.
@@ skipping 576 matching lines @@
     "src/compiler/js-intrinsic-lowering.h",
     "src/compiler/js-operator.cc",
     "src/compiler/js-operator.h",
     "src/compiler/js-typed-lowering.cc",
     "src/compiler/js-typed-lowering.h",
     "src/compiler/jump-threading.cc",
     "src/compiler/jump-threading.h",
     "src/compiler/linkage-impl.h",
     "src/compiler/linkage.cc",
     "src/compiler/linkage.h",
+    "src/compiler/liveness-analyzer.cc",
+    "src/compiler/liveness-analyzer.h",
     "src/compiler/load-elimination.cc",
     "src/compiler/load-elimination.h",
     "src/compiler/loop-peeling.cc",
     "src/compiler/loop-analysis.cc",
     "src/compiler/loop-analysis.h",
     "src/compiler/machine-operator-reducer.cc",
     "src/compiler/machine-operator-reducer.h",
     "src/compiler/machine-operator.cc",
     "src/compiler/machine-operator.h",
     "src/compiler/machine-type.cc",
@@ skipping 975 matching lines @@
       sources += [
         "src/d8-debug.cc",
         "$target_gen_dir/d8-js.cc",
       ]
     }
     if (v8_enable_i18n_support) {
       deps += [ "//third_party/icu" ]
     }
   }
 }