[PATCH] D148269: [Pipeline] Don't limit ArgumentPromotion to -O3

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

In D148269#4272922 <https://reviews.llvm.org/D148269#4272922>, @yonghong-song wrote:

> The bpf backend calling convention is only allowing 5
> parameters in registers and does not allow pass arguments
> through stacks.

To clarify, is this a limitation of the BPF backend, or BPF itself? That is, is the backend just missing legalization support for converting too many arguments into pass by stack?

Generally I'd be fine with a TTI hook to control the maximum number of arguments though.


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  https://reviews.llvm.org/D148269/new/

https://reviews.llvm.org/D148269