[turbofan] Factored out the test live range builder.

test/unittests/compiler/coalesced-live-ranges-unittest.cc

Index: test/unittests/compiler/coalesced-live-ranges-unittest.cc
diff --git a/test/unittests/compiler/coalesced-live-ranges-unittest.cc b/test/unittests/compiler/coalesced-live-ranges-unittest.cc
index e728c9ff6461ae1cecb174ea9b1076c0f8718aef..fe8fac4bfe815fa44d09988383a4a6cd966497a4 100644
--- a/test/unittests/compiler/coalesced-live-ranges-unittest.cc
+++ b/test/unittests/compiler/coalesced-live-ranges-unittest.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "src/compiler/coalesced-live-ranges.h"
+#include "test/unittests/compiler/live-range-builder.h"
 #include "test/unittests/test-utils.h"
 
 namespace v8 {
@@ -10,50 +11,6 @@ namespace internal {
 namespace compiler {
 
 
-// Utility offering shorthand syntax for building up a range by providing its ID
-// and pairs (start, end) specifying intervals. Circumvents current incomplete
-// support for C++ features such as instantiation lists, on OS X and Android.
-class TestRangeBuilder {
- public:
-  explicit TestRangeBuilder(Zone* zone) : id_(-1), pairs_(), zone_(zone) {}
-
-  TestRangeBuilder& Id(int id) {
-    id_ = id;
-    return *this;
-  }
-  TestRangeBuilder& Add(int start, int end) {
-    pairs_.push_back({start, end});
-    return *this;
-  }
-
-  LiveRange* Build(int start, int end) { return Add(start, end).Build(); }
-
-  LiveRange* Build() {
-    TopLevelLiveRange* range =
-        new (zone_) TopLevelLiveRange(id_, MachineType::kRepTagged);
-    // Traverse the provided interval specifications backwards, because that is
-    // what LiveRange expects.
-    for (int i = static_cast<int>(pairs_.size()) - 1; i >= 0; --i) {
-      Interval pair = pairs_[i];
-      LifetimePosition start = LifetimePosition::FromInt(pair.first);
-      LifetimePosition end = LifetimePosition::FromInt(pair.second);
-      CHECK(start < end);
-      range->AddUseInterval(start, end, zone_);
-    }
-
-    pairs_.clear();
-    return range;
-  }
-
- private:
-  typedef std::pair<int, int> Interval;
-  typedef std::vector<Interval> IntervalList;
-  int id_;
-  IntervalList pairs_;
-  Zone* zone_;
-};
-
-
 class CoalescedLiveRangesTest : public TestWithZone {
  public:
   CoalescedLiveRangesTest() : TestWithZone(), ranges_(zone()) {}