[llvm-dev] [cfe-dev] [LLVMdev] Clang devirtualization proposal

[Reid Kleckner via llvm-dev]

On Sat, Aug 8, 2015 at 8:03 AM, Stephen Cross <scross at scross.co.uk> wrote:
>
> I may not have followed the discussion completely, but would it be
> possible to simply strip the 'readonly' attributes when dead arguments
> are eliminated?


I think this actually works. Think of it this way: the result of
functionattrs is actually an analysis that we cache and maintain in the IR.
DAE invalidates that analysis, so it must flush the cache or repopulate it.
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