Richard Sandiford 086791eca2 Add TargetLowering::prepareVolatileOrAtomicLoad ... One unusual feature of the z architecture is that the result of a previous load can be reused indefinitely for subsequent loads, even if a cache-coherent store to that location is performed by another CPU. A special serializing instruction must be used if you want to force a load to be reattempted. Since volatile loads are not supposed to be omitted in this way, we should insert a serializing instruction before each such load. The same goes for atomic loads. The patch implements this at the IR->DAG boundary, in a similar way to atomic fences. It is a no-op for targets other than SystemZ. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196905 91177308-0d34-0410-b5e6-96231b3b80d8		2013-12-10 10:36:34 +00:00
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llvm	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:36:34 +00:00
llvm-c	Add a Scalarizer pass.	2013-11-22 16:58:05 +00:00