[llvm-dev] [RFC] `opt-out` attribute list for intrinsics

[Stefan Stipanovic via llvm-dev]

Hi all,

A while back we started annotating intrinsics with new attributes (
https://reviews.llvm.org/D65377)

After some discussion it was decided it would be good to have an `opt-out`
attribute list for intrinsics. Some attributes that can be added to the
list could be: nosync, nofree, nounwind, willreturn

For now, there are 2 approaches:

   1. Filtering opt-out attributes in tablegen source (
   https://reviews.llvm.org/D70365)
   2. Having tablegen handle opt-out list (
   https://reviews.llvm.org/D70365?id=229732)

How do people feel about these approaches? Is any of the two better than
the other? Maybe I should consider something else?

Thanks,
Stefan
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