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strings, bytes, strconv, runtime: use SSE4.2 string instructions on amd64 #6749

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gopherbot opened this issue Nov 11, 2013 · 7 comments
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strings, bytes, strconv, runtime: use SSE4.2 string instructions on amd64 #6749

gopherbot opened this issue Nov 11, 2013 · 7 comments
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@gopherbot
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by rayneolivetti:

Chapter 10 of Intel Architectures Optimization Reference Manual describes use cases of
several SSE4 instructions that can speed up various routines in strings, bytes, strconv
and runtime packages.

The instructions are missing from 6l/6a by the way.
@rsc
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rsc commented Nov 27, 2013

Comment 1:

Labels changed: added go1.3maybe.

@rsc
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rsc commented Dec 4, 2013

Comment 2:

Labels changed: added release-none, removed go1.3maybe.

@rsc
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rsc commented Dec 4, 2013

Comment 3:

Labels changed: added repo-main.

@bradfitz bradfitz removed the new label Dec 18, 2014
@rsc rsc added this to the Unplanned milestone Apr 10, 2015
@agnivade
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@rsc - Is this still valid ? We already have SSE and AVX2 supported instructions in asm_amd64.s.

@agnivade
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ping @martisch / @quasilyte - Does this still need to remain open ?

@randall77
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@TocarIP

@TocarIP
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TocarIP commented Sep 24, 2018 •
edited

We are using sse4.2 for Index. I think this should be closed, and if there are some other places where sse4.2 makes sense, we should open specific bug for each potential function from runtime/strconv.

@dmitshur dmitshur changed the title strings, bytes, strconv, runtime: use SSE4.2 string instructions on am64 strings, bytes, strconv, runtime: use SSE4.2 string instructions on amd64 Sep 14, 2019
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@bradfitz @rsc @agnivade @randall77 @gopherbot @TocarIP