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Add another item to the list of things that indvars does.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73355 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-06-14 22:38:41 +00:00
parent ec08da01fc
commit ea73f3c2e1
1 changed files with 4 additions and 1 deletions
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5
lib/Transforms/Scalar/IndVarSimplify.cpp
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@ -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: