Add loop recognition and CFG simplifications in new compiler.

We do three simplifications:
- Split critical edges, for code generation from SSA (new).
- Ensure one back edge per loop, to simplify loop recognition (new).
- Ensure only one pre header for a loop, to simplify SSA creation (existing).

Change-Id: I9bfccd4b236a00486a261078627b091c8a68be33

1 files changed, 3 insertions, 3 deletions

diff --git a/runtime/base/bit_vector.h b/runtime/base/bit_vector.h
index 6ee6b00e07..2a6839619a 100644
--- a/runtime/base/bit_vector.h
+++ b/runtime/base/bit_vector.h
@@ -148,11 +148,11 @@ class BitVector {
 
     bool EnsureSizeAndClear(unsigned int num);
 
-    void Dump(std::ostream& os, const char* prefix);
-    void DumpDot(FILE* file, const char* prefix, bool last_entry = false);
+    void Dump(std::ostream& os, const char* prefix) const;
+    void DumpDot(FILE* file, const char* prefix, bool last_entry = false) const;
 
   protected:
-    void DumpHelper(std::ostringstream& buffer, const char* prefix);
+    void DumpHelper(std::ostringstream& buffer, const char* prefix) const;
 
   private:
     Allocator* const allocator_;