Summary:
Tablegen was unable to determine that param loads/stores were actually
reading or writing from memory. I think this isn't a problem in
practice for param stores, because those occur in a block right before
we make our call. But param loads don't have to at the very beginning
of a function, so should be annotated as mayLoad so we don't incorrectly
optimize them.
Reviewers: jholewinski
Subscribers: jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D17471
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262381 91177308-0d34-0410-b5e6-96231b3b80d8
47e3ade685