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/sysPublic

Commit0c18c88

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cpu: add DIT option and hwcap DIT support
Follow-up tohttps://go.dev/cl/597377, add a option for DIT so it can beset via GODEBUG, and add hwcap support for Linux.Change-Id: Ib094b520edea9c099d37f121b09d02b31644a433Reviewed-on:https://go-review.googlesource.com/c/sys/+/598719LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>Reviewed-by: Ian Lance Taylor <iant@google.com>
1 parentdce4e64 commit0c18c88

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‎cpu/cpu_arm64.go

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@@ -38,6 +38,7 @@ func initOptions() {
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{Name:"dcpop",Feature:&ARM64.HasDCPOP},
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{Name:"asimddp",Feature:&ARM64.HasASIMDDP},
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{Name:"asimdfhm",Feature:&ARM64.HasASIMDFHM},
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{Name:"dit",Feature:&ARM64.HasDIT},
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}
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}
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‎cpu/cpu_linux_arm64.go

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@@ -35,6 +35,7 @@ const (
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hwcap_SHA512=1<<21
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hwcap_SVE=1<<22
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hwcap_ASIMDFHM=1<<23
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hwcap_DIT=1<<24
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hwcap2_SVE2=1<<1
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)
@@ -106,6 +107,8 @@ func doinit() {
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ARM64.HasSHA512=isSet(hwCap,hwcap_SHA512)
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ARM64.HasSVE=isSet(hwCap,hwcap_SVE)
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ARM64.HasASIMDFHM=isSet(hwCap,hwcap_ASIMDFHM)
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ARM64.HasDIT=isSet(hwCap,hwcap_DIT)
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// HWCAP2 feature bits
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ARM64.HasSVE2=isSet(hwCap2,hwcap2_SVE2)

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