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/goPublic

runtime: optimize zeroing of registers in secret_amd64.s#76830

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@CAFxXCAFxX commentedDec 14, 2025•
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Use VPXORQ instead of VMOVAPD because the former, when in the form of a zeroing idiom, is handled directly by the renamer.

Tweak also the KXORQs to operate each on a single register, making it trivial to understand what the intent is, and so that all can potentially execute in parallel.

Use VPXORQ instead of VMOVAPD because the former, when in the form of a zeroing idiom, is handled directly by the renamer.Tweak also the KXORQs to operate each on a single register, making it trivial to understand what the intent is, and so that all can potentially execute in parallel.
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This PR (HEAD:2e02768) has been imported to Gerrit for code review.

Please visit Gerrit athttps://go-review.googlesource.com/c/go/+/729940.

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Message from Gopher Robot:

Patch Set 1:

(1 comment)

Please don’t reply on this GitHub thread. Visitgolang.org/cl/729940.
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Message from Jorropo:

Patch Set 1:

(1 comment)

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Message from Carlo Alberto Ferraris:

Patch Set 2:

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Message from Carlo Alberto Ferraris:

Patch Set 2:

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Message from Daniel Morsing:

Patch Set 2: Code-Review+1

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Message from Jorropo:

Patch Set 2:

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Message from Keith Randall:

Patch Set 2:

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Message from Martin Möhrmann:

Patch Set 2:

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Message from Carlo Alberto Ferraris:

Patch Set 2:

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Message from Carlo Alberto Ferraris:

Patch Set 2:

(1 comment)

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