diff options
| -rw-r--r-- | lib/Transforms/Scalar/IndVarSimplify.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp index 38b1198..429de93 100644 --- a/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -17,7 +17,10 @@ // which starts at zero and steps by one. // 2. The canonical induction variable is guaranteed to be the first PHI node // in the loop header block. -// 3. Any pointer arithmetic recurrences are raised to use array subscripts. +// 3. The canonical induction variable is guaranteed to be in a wide enough +// type so that IV expressions need not be (directly) zero-extended or +// sign-extended. +// 4. Any pointer arithmetic recurrences are raised to use array subscripts. // // If the trip count of a loop is computable, this pass also makes the following // changes: |