[llvm-dev] Different passes for different functions

David Blaikie via llvm-dev llvm-dev at lists.llvm.org
Wed Oct 30 23:07:30 PDT 2019

There is limited support for different optimisations due to different
functions - subtarget features specifically can vary from function to
function and optimizations are intended to respect them. So the pass
pipeline remains the same, but passes should skip their work if the
subtarget features, attributes, etc, on a function indicate not to do a
certain optimization. (this is how the  "optnone" is supported for instance
- but also subtarget features like SSE versions, etc)

On Wed, Oct 30, 2019 at 8:13 PM Sooyeon Lee via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi all.
> (Assume that a program has one module.)
> Is there any way to apply different passes for different functions?
> If not, please advise me how to implement it while considering module
> passes.
> Best regards,
> Sooyeon
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> llvm-dev at lists.llvm.org
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