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| author | Dan Gohman <gohman@apple.com> | 2009-06-14 22:38:41 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-06-14 22:38:41 +0000 |
| commit | 9b4c85ff62486d9d65a55f067f105bd0fd84b093 (patch) | |
| tree | 862e3e31aa534140a5f072d2f2538eac21f5ca16 /llvm/lib/Transforms | |
| parent | b6495b26e52629572ad9ee37cd5e66481e4da808 (diff) | |
| download | bcm5719-llvm-9b4c85ff62486d9d65a55f067f105bd0fd84b093.tar.gz bcm5719-llvm-9b4c85ff62486d9d65a55f067f105bd0fd84b093.zip | |
Add another item to the list of things that indvars does.
llvm-svn: 73355
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp index 38b11985519..429de935369 100644 --- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/llvm/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: |
