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cmd/compile: implement duffcopy on ppc64x #17842

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bradfitz opened this issue Nov 8, 2016 · 2 comments
Open

cmd/compile: implement duffcopy on ppc64x #17842

bradfitz opened this issue Nov 8, 2016 · 2 comments
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsDecision Feedback is required from experts, contributors, and/or the community before a change can be made. Performance
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@bradfitz
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bradfitz commented Nov 8, 2016

implement duffcopy on ppc64x.

See TODO in code and stale pending CL https://go-review.googlesource.com/c/9684/ which could be resurrected.

/cc @minux @laboger

@bradfitz bradfitz added this to the Go1.9 milestone Nov 8, 2016
@laboger
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laboger commented Nov 15, 2016

Are there benchmarks to test the performance of duffzero and duffcopy? I don't see any.

I'm not sure the duff implementations would perform better than memclr and a memcpy (similar to current memmove) on ppc64x.

@bradfitz
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Probably src/runtime/memmove_test.go

@randall77 randall77 modified the milestones: Go1.10, Go1.9 May 31, 2017
@bradfitz bradfitz modified the milestones: Go1.10, Go1.11 Nov 28, 2017
@bradfitz bradfitz modified the milestones: Go1.11, Unplanned May 18, 2018
@ALTree ALTree added the NeedsDecision Feedback is required from experts, contributors, and/or the community before a change can be made. label Sep 26, 2019
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Jul 13, 2022
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