internal/cpu: update arm64 cpu features

Follow the Linux Kernel 4.15
Add Arm64 minimalFeatures test

Change-Id: I1c092521ba59b1e4096c27786fa0464f9ef7d311
Reviewed-on: https://go-review.googlesource.com/103636
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/internal/cpu/cpu.go

@@ -73,6 +73,21 @@ type arm64 struct {
 	HasSHA2     bool
 	HasCRC32    bool
 	HasATOMICS  bool
+	HasFPHP     bool
+	HasASIMDHP  bool
+	HasCPUID    bool
+	HasASIMDRDM bool
+	HasJSCVT    bool
+	HasFCMA     bool
+	HasLRCPC    bool
+	HasDCPOP    bool
+	HasSHA3     bool
+	HasSM3      bool
+	HasSM4      bool
+	HasASIMDDP  bool
+	HasSHA512   bool
+	HasSVE      bool
+	HasASIMDFHM bool
 	_           [CacheLineSize]byte
 }
 

src/internal/cpu/cpu_arm64.go

@@ -25,6 +25,21 @@ const (
 	hwcap_SHA2     = (1 << 6)
 	hwcap_CRC32    = (1 << 7)
 	hwcap_ATOMICS  = (1 << 8)
+	hwcap_FPHP     = (1 << 9)
+	hwcap_ASIMDHP  = (1 << 10)
+	hwcap_CPUID    = (1 << 11)
+	hwcap_ASIMDRDM = (1 << 12)
+	hwcap_JSCVT    = (1 << 13)
+	hwcap_FCMA     = (1 << 14)
+	hwcap_LRCPC    = (1 << 15)
+	hwcap_DCPOP    = (1 << 16)
+	hwcap_SHA3     = (1 << 17)
+	hwcap_SM3      = (1 << 18)
+	hwcap_SM4      = (1 << 19)
+	hwcap_ASIMDDP  = (1 << 20)
+	hwcap_SHA512   = (1 << 21)
+	hwcap_SVE      = (1 << 22)
+	hwcap_ASIMDFHM = (1 << 23)
 )
 
 func init() {
@@ -38,6 +53,21 @@ func init() {
 	ARM64.HasSHA2 = isSet(arm64_hwcap, hwcap_SHA2)
 	ARM64.HasCRC32 = isSet(arm64_hwcap, hwcap_CRC32)
 	ARM64.HasATOMICS = isSet(arm64_hwcap, hwcap_ATOMICS)
+	ARM64.HasFPHP = isSet(arm64_hwcap, hwcap_FPHP)
+	ARM64.HasASIMDHP = isSet(arm64_hwcap, hwcap_ASIMDHP)
+	ARM64.HasCPUID = isSet(arm64_hwcap, hwcap_CPUID)
+	ARM64.HasASIMDRDM = isSet(arm64_hwcap, hwcap_ASIMDRDM)
+	ARM64.HasJSCVT = isSet(arm64_hwcap, hwcap_JSCVT)
+	ARM64.HasFCMA = isSet(arm64_hwcap, hwcap_FCMA)
+	ARM64.HasLRCPC = isSet(arm64_hwcap, hwcap_LRCPC)
+	ARM64.HasDCPOP = isSet(arm64_hwcap, hwcap_DCPOP)
+	ARM64.HasSHA3 = isSet(arm64_hwcap, hwcap_SHA3)
+	ARM64.HasSM3 = isSet(arm64_hwcap, hwcap_SM3)
+	ARM64.HasSM4 = isSet(arm64_hwcap, hwcap_SM4)
+	ARM64.HasASIMDDP = isSet(arm64_hwcap, hwcap_ASIMDDP)
+	ARM64.HasSHA512 = isSet(arm64_hwcap, hwcap_SHA512)
+	ARM64.HasSVE = isSet(arm64_hwcap, hwcap_SVE)
+	ARM64.HasASIMDFHM = isSet(arm64_hwcap, hwcap_ASIMDFHM)
 }
 
 func isSet(hwc uint, value uint) bool {

src/internal/cpu/cpu_test.go

@@ -48,3 +48,14 @@ func TestPPC64minimalFeatures(t *testing.T) {
 		}
 	}
 }
+
+func TestARM64minimalFeatures(t *testing.T) {
+	if runtime.GOARCH == "arm64" {
+		if !cpu.ARM64.HasASIMD {
+			t.Fatalf("HasASIMD expected true, got false")
+		}
+		if !cpu.ARM64.HasFP {
+			t.Fatalf("HasFP expected true, got false")
+		}
+	}
+}