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cmd/compile: implement duffcopy on ppc64x #17842

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bradfitz opened this Issue Nov 8, 2016 · 2 comments

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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 the Performance label Nov 8, 2016

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

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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.

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bradfitz commented Nov 15, 2016

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

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