[llvm-dev] RFC: Strong GC References in LLVM

Lawrence, Peter via llvm-dev llvm-dev at lists.llvm.org
Mon Jul 18 18:13:21 PDT 2016

>     Hi all,



>        2. Introduce a flag on load and stores that either

>             a. Denotes a "gc_safety" control dependence.

>             b. Denotes a "blackbox_safety" control dependence.  In this case

>                we will probably have some optional metadata on loads and

>                stores to indicate that the control dependence is actually on

>                GC safety.



> Suggested name for 2b: "unsafe" or "predicated". Essentially, that the

> load is not generally safe to do even if the *memory* is generally safe

> to load from because of some external effect.

Sounds like "volatile" to me ...

--Peter Lawrence.
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