* Change ExpressionConvertableToType to more closely match map behavior of

ConvertExpressionToType
* Make ValueHandle's remove instruction from maps when they are deleted so that
  no false map hits occur if a subsequent instruction is allocated to the same
  space in memory.  This was a VERY VERY VERY EVIL NASTY BUG to track down. :-P


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1288 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/TransformInternals.h

@@ -95,8 +95,9 @@ void ConvertUsersType(Value *V, Value *NewVal, ValueMapCache &VMC);
 // 
 class ValueHandle : public Instruction {
   ValueHandle(const ValueHandle &); // DO NOT IMPLEMENT
+  ValueMapCache &Cache;
 public:
-  ValueHandle(Value *V);
+  ValueHandle(ValueMapCache &VMC, Value *V);
   ~ValueHandle();
 
   virtual Instruction *clone() const { abort(); return 0; }