David Majnemer 124bdb7497 [FunctionAttrs] Volatile loads should disable readonly ...

A volatile load has side effects beyond what callers expect readonly to
signify.  For example, it is not safe to reorder two function calls
which each perform a volatile load to the same memory location.

llvm-svn: 270671

2016-05-25 05:53:04 +00:00

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