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2020 Nov 12
5
Complex proposal v3 + roundtable agenda
...g existing
optimizations how to handle the new complex intrinsics seems like a
LOT of unnecessary work.
That said, we recently had this same conversation at Simon Moll's
native predication sync-up meeting. Simon had some convincing ways to
workaround predicated intrinsic optimization (e.g. the
PredicatedInstruction class). Maybe we should explore a more
generalized solution that would cover complex intrinsics too?
Digressing a bit, have we ever discussed using a branch to develop
something like complex support? That way we would avoid an
experimental intrinsic implementation, but also not disturb the
codebas...
2020 Nov 12
0
Complex proposal v3 + roundtable agenda
...g existing optimizations how to handle the new complex intrinsics seems like a LOT of unnecessary work.
That said, we recently had this same conversation at Simon Moll's native predication sync-up meeting. Simon had some convincing ways to workaround predicated intrinsic optimization (e.g. the PredicatedInstruction class). Maybe we should explore a more generalized solution that would cover complex intrinsics too?
Digressing a bit, have we ever discussed using a branch to develop something like complex support? That way we would avoid an experimental intrinsic implementation, but also not disturb the codebas...
2020 Nov 12
0
Complex proposal v3 + roundtable agenda
...hts on how this might clash with the available instructions on other targets.
>
> That said, we recently had this same conversation at Simon Moll's
> native predication sync-up meeting. Simon had some convincing ways to
> workaround predicated intrinsic optimization (e.g. the
> PredicatedInstruction class). Maybe we should explore a more
> generalized solution that would cover complex intrinsics too?
>
> Digressing a bit, have we ever discussed using a branch to develop
> something like complex support? That way we would avoid an
> experimental intrinsic implementation, but als...
2019 Oct 22
4
Complex proposal v3 + roundtable agenda
Ahead of the Wednesday’s roundtable at the developers’ conference, here is version three of
the proposal for first-class complex types in LLVM. I was not able to add Krzysztof Parzyszek’s
suggestion of a “cunzip” intrinsic returning two vectors as I could not find examples of intrinsics
that return two values at the IR level. The Hexagon intrinsics declared to return two values do
not actually