Robin Morisset 9e98e7f7fc Answer to Philip Reames comments
- add check for volatile (probably unneeded, but I agree that we should be conservative about it).
- strengthen condition from isUnordered() to isSimple(), as I don't understand well enough Unordered semantics (and it also matches the comment better this way) to be confident in the previous behaviour (thanks for catching that one, I had missed the case Monotonic/Unordered).
- separate a condition in two.
- lengthen comment about aliasing and loads
- add tests in GVN/atomic.ll

llvm-svn: 215943
2014-08-18 22:18:14 +00:00
2014-08-18 22:18:14 +00:00
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