Minor cleanup related to my latest scheduler changes.

[oota-llvm.git] / lib / Transforms / InstCombine / InstCombine.h

diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h
index 6f9609cf997ba05352c3e460662ad5b0945d093a..3a58708166dfe129726f25f1fd4a9cee0bbf4273 100644 (file)
--- a/lib/Transforms/InstCombine/InstCombine.h
+++ b/lib/Transforms/InstCombine/InstCombine.h
@@ -81,7 +81,9 @@ public:
   BuilderTy *Builder;
       
   static char ID; // Pass identification, replacement for typeid
-  InstCombiner() : FunctionPass(ID), TD(0), Builder(0) {}
+  InstCombiner() : FunctionPass(ID), TD(0), Builder(0) {
+    initializeInstCombinerPass(*PassRegistry::getPassRegistry());
+  }
 
 public:
   virtual bool runOnFunction(Function &F);
@@ -284,9 +286,16 @@ public:
 
 private:
 
-  /// SimplifyCommutative - This performs a few simplifications for 
-  /// commutative operators.
-  bool SimplifyCommutative(BinaryOperator &I);
+  /// SimplifyAssociativeOrCommutative - This performs a few simplifications for
+  /// operators which are associative or commutative.
+  bool SimplifyAssociativeOrCommutative(BinaryOperator &I);
+
+  /// SimplifyUsingDistributiveLaws - This tries to simplify binary operations
+  /// which some other binary operation distributes over either by factorizing
+  /// out common terms (eg "(A*B)+(A*C)" -> "A*(B+C)") or expanding out if this
+  /// results in simplifications (eg: "A & (B | C) -> (A&B) | (A&C)" if this is
+  /// a win).  Returns the simplified value, or null if it didn't simplify.
+  Value *SimplifyUsingDistributiveLaws(BinaryOperator &I);
 
   /// SimplifyDemandedUseBits - Attempts to replace V with a simpler value
   /// based on the demanded bits.