Semantic tests for memory invalidation at statepoints
These are simply a collection of tests intended to show that information about the contents of gc references in the heap is lost at a statepoint. I've tried to write them so that they don't disallow correct transformations, while still being fairly easy to understand.
p.s. Ideas for additional tests are welcome.
Differential Revision: http://reviews.llvm.org/D6491
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224971
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