* Add assertion to ExprTypeConvert to detect error earlier than without it

* Fix bug in LevelRaise.cpp, correcting this problem:
    test/Regression/Transforms/LevelRaise/2002-07-16-RaiseCrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2920 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/LevelRaise.cpp

@@ -227,6 +227,7 @@ static bool PeepholeOptimize(BasicBlock *BB, BasicBlock::iterator &BI) {
       // source type of the cast...
       //
       ConvertedTypes.clear();
+      ConvertedTypes[CI] = Src->getType();  // Make sure the cast _does_ change
       if (ValueConvertableToType(CI, Src->getType(), ConvertedTypes)) {
         PRINT_PEEPHOLE3("CAST-DEST-EXPR-CONV:in ", Src, CI, BB->getParent());