Enable Local CSE by default

src/IceCfg.h

Index: src/IceCfg.h
diff --git a/src/IceCfg.h b/src/IceCfg.h
index 02e8394511ec23bf74f72539487813647bb07cff..8cb81107a3c7a4092396820311c9b2b45cbe35f1 100644
--- a/src/IceCfg.h
+++ b/src/IceCfg.h
@@ -201,7 +201,7 @@ public:
   void advancedPhiLowering();
   void reorderNodes();
   void shuffleNodes();
-  void localCSE();
+  void localCSE(const bool NoSSA);

[Jim Stichnoth, 2016/07/29 14:49:02]

I would remove the "const" here.

Also, I think it's easier to understand when parameters like this convey the
positive sense rather than the negative sense.  Otherwise I might end up calling
it like this:

  static constexpr bool NoNoSSA = false;
  localCse(NoNoSSA);

E.g. call it "bool UseSSA" or "AssumeSSA" and invert the logic everywhere.

[manasijm, 2016/08/01 17:39:24]

Done.

   void shortCircuitJumps();
   void loopInvariantCodeMotion();