[turbofan] Deferred blocks splintering.

src/compiler/live-range-separator.h

Index: src/compiler/live-range-separator.h
diff --git a/src/compiler/preprocess-live-ranges.h b/src/compiler/live-range-separator.h
similarity index 56%
rename from src/compiler/preprocess-live-ranges.h
rename to src/compiler/live-range-separator.h
index aa852fc7ca40606959596efd900ab67fbad234c0..2abefe88c235c0355d1c2fbb1ec395f3e6047b1b 100644
--- a/src/compiler/preprocess-live-ranges.h
+++ b/src/compiler/live-range-separator.h
@@ -12,15 +12,31 @@ namespace internal {
 namespace compiler {
 
 
-class PreprocessLiveRanges final {
+// A register allocation pair of transformations: splinter and merge live ranges
+class LiveRangeSeparator final {
  public:
-  PreprocessLiveRanges(RegisterAllocationData* data, Zone* zone)
+  LiveRangeSeparator(RegisterAllocationData* data, Zone* zone)
       : data_(data), zone_(zone) {}
-  void PreprocessRanges();
+
+  void Splinter();
 
  private:
-  void SplitRangesAroundDeferredBlocks();
+  RegisterAllocationData* data() { return data_; }

[Benedikt Meurer, 2015/08/24 04:33:26]

Nit: mark these accessors const.

[Mircea Trofin, 2015/08/24 20:55:10]

Done.

+  Zone* zone() { return zone_; }
+
+  RegisterAllocationData* data_;

[Benedikt Meurer, 2015/08/24 04:33:26]

Nit: use const fields, i.e. RegisterAllocationData* const data_;

[Mircea Trofin, 2015/08/24 20:55:10]

Done.

+  Zone* zone_;
+};
 
+
+class LiveRangeMerger final {
+ public:
+  LiveRangeMerger(RegisterAllocationData* data, Zone* zone)
+      : data_(data), zone_(zone) {}
+
+  void Merge();
+
+ private:
   RegisterAllocationData* data() { return data_; }

[Benedikt Meurer, 2015/08/24 04:33:26]

See above.

[Mircea Trofin, 2015/08/24 20:55:10]

Done.

   Zone* zone() { return zone_; }