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internal/cpu: new package to detect cpu features

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Implements detection of x86 cpu features that
are used in the go standard library.

Changes all standard library packages to use the new cpu package
instead of using runtime internal variables to check x86 cpu features.

Updates: #15403

Change-Id: I2999a10cb4d9ec4863ffbed72f4e021a1dbc4bb9
Reviewed-on: https://go-review.googlesource.com/41476
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Martin Möhrmann 2017-04-03 22:38:09 +02:00 committed by Keith Randall
parent 4fc498d89a
commit 69972aea74
31 changed files with 329 additions and 226 deletions
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12
src/bytes/bytes_amd64.go
View File

@ -4,19 +4,19 @@
package bytes
import "internal/cpu"
//go:noescape
// indexShortStr returns the index of the first instance of c in s, or -1 if c is not present in s.
// indexShortStr requires 2 <= len(c) <= shortStringLen
func indexShortStr(s, c []byte) int // ../runtime/asm_$GOARCH.s
func supportAVX2() bool // ../runtime/asm_$GOARCH.s
func supportPOPCNT() bool // ../runtime/asm_$GOARCH.s
func countByte(s []byte, c byte) int // ../runtime/asm_$GOARCH.s
func indexShortStr(s, c []byte) int // ../runtime/asm_amd64.s
func countByte(s []byte, c byte) int // ../runtime/asm_amd64.s
var shortStringLen int
func init() {
if supportAVX2() {
if cpu.X86.HasAVX2 {
shortStringLen = 63
} else {
shortStringLen = 31
@ -99,7 +99,7 @@ func Index(s, sep []byte) int {
// Count counts the number of non-overlapping instances of sep in s.
// If sep is an empty slice, Count returns 1 + the number of Unicode code points in s.
func Count(s, sep []byte) int {
if len(sep) == 1 && supportPOPCNT() {
if len(sep) == 1 && cpu.X86.HasPOPCNT {
return countByte(s, sep[0])
}
return countGeneric(s, sep)

123
src/cmd/dist/deps.go vendored
View File

@ -3,56 +3,57 @@
package main
var builddeps = map[string][]string{
"bufio": {"bytes", "errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"bytes": {"errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"cmd/go/internal/base": {"bufio", "bytes", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/bug": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/envcmd", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/buildid": {"bufio", "bytes", "cmd/go/internal/cfg", "compress/flate", "compress/zlib", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/cfg": {"bufio", "bytes", "errors", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/clean": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/doc": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/envcmd": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/fix": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "compress/flate", "compress/zlib", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/fmtcmd": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "compress/flate", "compress/zlib", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/generate": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/get": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "encoding/xml", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/singleflight", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/help": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/list": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/load": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/str", "compress/flate", "compress/zlib", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/run": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/str": {"bytes", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/test": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/cmdflag", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/tool": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/version": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/cmdflag": {"cmd/go/internal/base", "flag", "fmt", "os", "strconv", "strings"},
"cmd/go/internal/vet": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/cmdflag", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"bufio": {"bytes", "errors", "internal/cpu", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"bytes": {"errors", "internal/cpu", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"cmd/go/internal/base": {"bufio", "bytes", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/bug": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/envcmd", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/buildid": {"bufio", "bytes", "cmd/go/internal/cfg", "compress/flate", "compress/zlib", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go/internal/cfg": {"bufio", "bytes", "errors", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
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"crypto": {"errors", "hash", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"crypto/sha1": {"crypto", "errors", "hash", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
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"compress/zlib": {"bufio", "bytes", "compress/flate", "errors", "fmt", "hash", "hash/adler32", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "math/bits", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"container/heap": {"errors", "internal/cpu", "internal/race", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"context": {"errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"crypto": {"errors", "hash", "internal/cpu", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"crypto/sha1": {"crypto", "errors", "hash", "internal/cpu", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"debug/dwarf": {"encoding/binary", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"debug/elf": {"bufio", "bytes", "compress/flate", "compress/zlib", "debug/dwarf", "encoding/binary", "errors", "fmt", "hash", "hash/adler32", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "math/bits", "os", "path", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"debug/macho": {"bytes", "debug/dwarf", "encoding/binary", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"encoding": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"encoding/base64": {"errors", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"encoding/binary": {"errors", "internal/race", "io", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"encoding/json": {"bytes", "encoding", "encoding/base64", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"encoding/xml": {"bufio", "bytes", "encoding", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"encoding/base64": {"errors", "internal/cpu", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"encoding/binary": {"errors", "internal/cpu", "internal/race", "io", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"encoding/json": {"bytes", "encoding", "encoding/base64", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"encoding/xml": {"bufio", "bytes", "encoding", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"errors": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"flag": {"errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"fmt": {"errors", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"go/ast": {"bytes", "errors", "fmt", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/build": {"bufio", "bytes", "errors", "fmt", "go/ast", "go/doc", "go/parser", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/doc": {"bytes", "errors", "fmt", "go/ast", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/parser": {"bytes", "errors", "fmt", "go/ast", "go/scanner", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/scanner": {"bytes", "errors", "fmt", "go/token", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/token": {"errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"flag": {"errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"fmt": {"errors", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"go/ast": {"bytes", "errors", "fmt", "go/scanner", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/build": {"bufio", "bytes", "errors", "fmt", "go/ast", "go/doc", "go/parser", "go/scanner", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/doc": {"bytes", "errors", "fmt", "go/ast", "go/scanner", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/parser": {"bytes", "errors", "fmt", "go/ast", "go/scanner", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/scanner": {"bytes", "errors", "fmt", "go/token", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"go/token": {"errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"hash": {"errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic"},
"hash/adler32": {"errors", "hash", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic"},
"internal/cpu": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"internal/poll": {"errors", "internal/race", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"internal/race": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"internal/singleflight": {"internal/race", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic"},
@ -60,33 +61,33 @@ var builddeps = map[string][]string{
"internal/syscall/windows/registry": {"errors", "internal/race", "internal/syscall/windows/sysdll", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "syscall", "unicode/utf16"},
"internal/syscall/windows/sysdll": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"io": {"errors", "internal/race", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic"},
"io/ioutil": {"bytes", "errors", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"log": {"errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"math": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"io/ioutil": {"bytes", "errors", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"log": {"errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"math": {"internal/cpu", "runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"math/bits": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"net/url": {"bytes", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"net/url": {"bytes", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"os": {"errors", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"os/exec": {"bytes", "context", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"os/exec": {"bytes", "context", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"os/signal": {"errors", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "os", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
"path": {"errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"path/filepath": {"errors", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"reflect": {"errors", "internal/race", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"regexp": {"bytes", "errors", "internal/race", "io", "math", "reflect", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"regexp/syntax": {"bytes", "errors", "internal/race", "io", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"path": {"errors", "internal/cpu", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"path/filepath": {"errors", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"reflect": {"errors", "internal/cpu", "internal/race", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"regexp": {"bytes", "errors", "internal/cpu", "internal/race", "io", "math", "reflect", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"regexp/syntax": {"bytes", "errors", "internal/cpu", "internal/race", "io", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"runtime": {"runtime/internal/atomic", "runtime/internal/sys"},
"runtime/internal/atomic": {"runtime/internal/sys"},
"runtime/internal/sys": {},
"sort": {"errors", "internal/race", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"strconv": {"errors", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "unicode/utf8"},
"strings": {"errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"sort": {"errors", "internal/cpu", "internal/race", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
"strconv": {"errors", "internal/cpu", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "unicode/utf8"},
"strings": {"errors", "internal/cpu", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
"sync": {"internal/race", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync/atomic"},
"sync/atomic": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"syscall": {"errors", "internal/race", "internal/syscall/windows/sysdll", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode/utf16"},
"text/template": {"bytes", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "math", "net/url", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"text/template/parse": {"bytes", "errors", "fmt", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"text/template": {"bytes", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "math", "net/url", "os", "path/filepath", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"text/template/parse": {"bytes", "errors", "fmt", "internal/cpu", "internal/poll", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"time": {"errors", "internal/race", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "syscall", "unicode/utf16"},
"unicode": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"unicode/utf16": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"unicode/utf8": {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
"cmd/go": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/bug", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/clean", "cmd/go/internal/doc", "cmd/go/internal/envcmd", "cmd/go/internal/fix", "cmd/go/internal/fmtcmd", "cmd/go/internal/generate", "cmd/go/internal/get", "cmd/go/internal/help", "cmd/go/internal/list", "cmd/go/internal/load", "cmd/go/internal/run", "cmd/go/internal/str", "cmd/go/internal/test", "cmd/go/internal/tool", "cmd/go/internal/version", "cmd/go/internal/vet", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "encoding/xml", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/poll", "internal/race", "internal/singleflight", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
"cmd/go": {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/bug", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/clean", "cmd/go/internal/cmdflag", "cmd/go/internal/doc", "cmd/go/internal/envcmd", "cmd/go/internal/fix", "cmd/go/internal/fmtcmd", "cmd/go/internal/generate", "cmd/go/internal/get", "cmd/go/internal/help", "cmd/go/internal/list", "cmd/go/internal/load", "cmd/go/internal/run", "cmd/go/internal/str", "cmd/go/internal/test", "cmd/go/internal/tool", "cmd/go/internal/version", "cmd/go/internal/vet", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "encoding/xml", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/cpu", "internal/poll", "internal/race", "internal/singleflight", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "math/bits", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
}

4
src/cmd/vet/all/whitelist/amd64.txt
View File

@ -15,10 +15,6 @@ runtime/asm_amd64.s: [amd64] morestack: use of 8(SP) points beyond argument fram
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: indexShortStr is in package strings
runtime/asm_amd64.s: [GOARCH] cannot check cross-package assembly function: Compare is in package bytes
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: indexShortStr is in package bytes
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: supportAVX2 is in package strings
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: supportAVX2 is in package bytes
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: supportPOPCNT is in package strings
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: supportPOPCNT is in package bytes
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: countByte is in package strings
runtime/asm_amd64.s: [amd64] cannot check cross-package assembly function: countByte is in package bytes

8
src/crypto/sha1/sha1block_amd64.go
View File

@ -4,18 +4,18 @@
package sha1
//go:noescape
import "internal/cpu"
//go:noescape
func blockAVX2(dig *digest, p []byte)
//go:noescape
func blockAMD64(dig *digest, p []byte)
func checkAVX2() bool
var hasAVX2 = checkAVX2()
var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI1 && cpu.X86.HasBMI2
func block(dig *digest, p []byte) {
if hasAVX2 && len(p) >= 256 {
if useAVX2 && len(p) >= 256 {
// blockAVX2 calculates sha1 for 2 block per iteration
// it also interleaves precalculation for next block.
// So it may read up-to 192 bytes past end of p

17
src/crypto/sha1/sha1block_amd64.s
View File

@ -1457,23 +1457,6 @@ TEXT ·blockAVX2(SB),$1408-32
CALC // RET is inside macros
// func checkAVX2() bool
// returns whether AVX2, BMI1 and BMI2 are supported
TEXT ·checkAVX2(SB),NOSPLIT,$0
CMPB runtime·support_avx2(SB), $0
JE noavx2
CMPB runtime·support_bmi1(SB), $0 // check for ANDNL instruction
JE noavx2
CMPB runtime·support_bmi2(SB), $0 // check for RORXL instruction
JE noavx2
MOVB $1, ret+0(FP)
RET
noavx2:
MOVB $0, ret+0(FP)
RET
DATA K_XMM_AR<>+0x00(SB)/4,$0x5a827999
DATA K_XMM_AR<>+0x04(SB)/4,$0x5a827999
DATA K_XMM_AR<>+0x08(SB)/4,$0x5a827999

9
src/crypto/sha256/sha256block_amd64.go Normal file
View File

@ -0,0 +1,9 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sha256
import "internal/cpu"
var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI2

5
src/crypto/sha256/sha256block_amd64.s
View File

@ -559,11 +559,8 @@
ADDL y3, h // h = t1 + S0 + MAJ // --
TEXT ·block(SB), 0, $536-32
CMPB runtime·support_avx2(SB), $0
JE noavx2bmi2
CMPB runtime·support_bmi2(SB), $1 // check for RORXL instruction
CMPB ·useAVX2(SB), $1
JE avx2
noavx2bmi2:
MOVQ p_base+8(FP), SI
MOVQ p_len+16(FP), DX

9
src/crypto/sha512/sha512block_amd64.go
View File

@ -6,19 +6,18 @@
package sha512
import "internal/cpu"
//go:noescape
func blockAVX2(dig *digest, p []byte)
//go:noescape
func blockAMD64(dig *digest, p []byte)
//go:noescape
func checkAVX2() bool
var hasAVX2 = checkAVX2()
var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI1 && cpu.X86.HasBMI2
func block(dig *digest, p []byte) {
if hasAVX2 {
if useAVX2 {
blockAVX2(dig, p)
} else {
blockAMD64(dig, p)

13
src/crypto/sha512/sha512block_amd64.s
View File

@ -1472,16 +1472,3 @@ loop2:
done_hash:
VZEROUPPER
RET
// func checkAVX2() bool
// returns whether AVX2 is supported
TEXT ·checkAVX2(SB), NOSPLIT, $0
MOVB runtime·support_avx2(SB), AX
CMPB AX,$0
JNE check_bmi2
MOVB AX, ret+0(FP)
RET
check_bmi2:
MOVB runtime·support_bmi2(SB), AX
MOVB AX, ret+0(FP)
RET

4
src/go/build/deps_test.go
View File

@ -43,6 +43,7 @@ var pkgDeps = map[string][]string{
"sync": {"internal/race", "runtime", "sync/atomic", "unsafe"},
"sync/atomic": {"unsafe"},
"unsafe": {},
"internal/cpu": {"runtime"},
"L0": {
"errors",
@ -52,11 +53,12 @@ var pkgDeps = map[string][]string{
"sync",
"sync/atomic",
"unsafe",
"internal/cpu",
},
// L1 adds simple functions and strings processing,
// but not Unicode tables.
"math": {"unsafe"},
"math": {"internal/cpu", "unsafe"},
"math/bits": {},
"math/cmplx": {"math"},
"math/rand": {"L0", "math"},

30
src/hash/crc32/crc32_amd64.go
View File

@ -8,23 +8,20 @@
package crc32
import "unsafe"
import (
"internal/cpu"
"unsafe"
)
// This file contains the code to call the SSE 4.2 version of the Castagnoli
// and IEEE CRC.
// haveSSE41/haveSSE42/haveCLMUL are defined in crc_amd64.s and use
// CPUID to test for SSE 4.1, 4.2 and CLMUL support.
func haveSSE41() bool
func haveSSE42() bool
func haveCLMUL() bool
// castagnoliSSE42 is defined in crc32_amd64.s and uses the SSE4.2 CRC32
// castagnoliSSE42 is defined in crc32_amd64.s and uses the SSE 4.2 CRC32
// instruction.
//go:noescape
func castagnoliSSE42(crc uint32, p []byte) uint32
// castagnoliSSE42Triple is defined in crc32_amd64.s and uses the SSE4.2 CRC32
// castagnoliSSE42Triple is defined in crc32_amd64.s and uses the SSE 4.2 CRC32
// instruction.
//go:noescape
func castagnoliSSE42Triple(
@ -38,9 +35,6 @@ func castagnoliSSE42Triple(
//go:noescape
func ieeeCLMUL(crc uint32, p []byte) uint32
var sse42 = haveSSE42()
var useFastIEEE = haveCLMUL() && haveSSE41()
const castagnoliK1 = 168
const castagnoliK2 = 1344
@ -50,11 +44,11 @@ var castagnoliSSE42TableK1 *sse42Table
var castagnoliSSE42TableK2 *sse42Table
func archAvailableCastagnoli() bool {
return sse42
return cpu.X86.HasSSE42
}
func archInitCastagnoli() {
if !sse42 {
if !cpu.X86.HasSSE42 {
panic("arch-specific Castagnoli not available")
}
castagnoliSSE42TableK1 = new(sse42Table)
@ -86,7 +80,7 @@ func castagnoliShift(table *sse42Table, crc uint32) uint32 {
}
func archUpdateCastagnoli(crc uint32, p []byte) uint32 {
if !sse42 {
if !cpu.X86.HasSSE42 {
panic("not available")
}
@ -197,13 +191,13 @@ func archUpdateCastagnoli(crc uint32, p []byte) uint32 {
}
func archAvailableIEEE() bool {
return useFastIEEE
return cpu.X86.HasPCLMULQDQ && cpu.X86.HasSSE41
}
var archIeeeTable8 *slicing8Table
func archInitIEEE() {
if !useFastIEEE {
if !cpu.X86.HasPCLMULQDQ || !cpu.X86.HasSSE41 {
panic("not available")
}
// We still use slicing-by-8 for small buffers.
@ -211,7 +205,7 @@ func archInitIEEE() {
}
func archUpdateIEEE(crc uint32, p []byte) uint32 {
if !useFastIEEE {
if !cpu.X86.HasPCLMULQDQ || !cpu.X86.HasSSE41 {
panic("not available")
}

30
src/hash/crc32/crc32_amd64.s
View File

@ -134,36 +134,6 @@ loop:
MOVL DX, retC+104(FP)
RET
// func haveSSE42() bool
TEXT ·haveSSE42(SB),NOSPLIT,$0
XORQ AX, AX
INCL AX
CPUID
SHRQ $20, CX
ANDQ $1, CX
MOVB CX, ret+0(FP)
RET
// func haveCLMUL() bool
TEXT ·haveCLMUL(SB),NOSPLIT,$0
XORQ AX, AX
INCL AX
CPUID
SHRQ $1, CX
ANDQ $1, CX
MOVB CX, ret+0(FP)
RET
// func haveSSE41() bool
TEXT ·haveSSE41(SB),NOSPLIT,$0
XORQ AX, AX
INCL AX
CPUID
SHRQ $19, CX
ANDQ $1, CX
MOVB CX, ret+0(FP)
RET
// CRC32 polynomial data
//
// These constants are lifted from the

14
src/hash/crc32/crc32_amd64p32.go
View File

@ -4,33 +4,29 @@
package crc32
import "internal/cpu"
// This file contains the code to call the SSE 4.2 version of the Castagnoli
// CRC.
// haveSSE42 is defined in crc32_amd64p32.s and uses CPUID to test for SSE 4.2
// support.
func haveSSE42() bool
// castagnoliSSE42 is defined in crc32_amd64p32.s and uses the SSE4.2 CRC32
// instruction.
//go:noescape
func castagnoliSSE42(crc uint32, p []byte) uint32
var sse42 = haveSSE42()
func archAvailableCastagnoli() bool {
return sse42
return cpu.X86.HasSSE42
}
func archInitCastagnoli() {
if !sse42 {
if !cpu.X86.HasSSE42 {
panic("not available")
}
// No initialization necessary.
}
func archUpdateCastagnoli(crc uint32, p []byte) uint32 {
if !sse42 {
if !cpu.X86.HasSSE42 {
panic("not available")
}
return castagnoliSSE42(crc, p)

11
src/hash/crc32/crc32_amd64p32.s
View File

@ -51,14 +51,3 @@ done:
NOTL AX
MOVL AX, ret+16(FP)
RET
// func haveSSE42() bool
TEXT ·haveSSE42(SB),NOSPLIT,$0
XORQ AX, AX
INCL AX
CPUID
SHRQ $20, CX
ANDQ $1, CX
MOVB CX, ret+0(FP)
RET

32
src/internal/cpu/cpu.go Normal file
View File

@ -0,0 +1,32 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package cpu implements processor feature detection
// used by the Go standard libary.
package cpu
var X86 x86
// The booleans in x86 contain the correspondingly named cpuid feature bit.
// HasAVX and HasAVX2 are only set if the OS does support XMM and YMM registers
// in addition to the cpuid feature bit being set.
// The struct is padded to avoid false sharing.
type x86 struct {
_ [CacheLineSize]byte
HasAES bool
HasAVX bool
HasAVX2 bool
HasBMI1 bool
HasBMI2 bool
HasERMS bool
HasOSXSAVE bool
HasPCLMULQDQ bool
HasPOPCNT bool
HasSSE2 bool
HasSSE3 bool
HasSSSE3 bool
HasSSE41 bool
HasSSE42 bool
_ [CacheLineSize]byte
}

7
src/internal/cpu/cpu_arm.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 32

7
src/internal/cpu/cpu_arm64.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 32

7
src/internal/cpu/cpu_mips.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 32

7
src/internal/cpu/cpu_mips64.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 32

7
src/internal/cpu/cpu_mips64le.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 32

7
src/internal/cpu/cpu_mipsle.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 32

7
src/internal/cpu/cpu_ppc64.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 128

7
src/internal/cpu/cpu_ppc64le.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 128

7
src/internal/cpu/cpu_s390x.go Normal file
View File

@ -0,0 +1,7 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu
const CacheLineSize = 256

27
src/internal/cpu/cpu_test.go Normal file
View File

@ -0,0 +1,27 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpu_test
import (
"internal/cpu"
"runtime"
"testing"
)
func TestAMD64minimalFeatures(t *testing.T) {
if runtime.GOARCH == "amd64" {
if !cpu.X86.HasSSE2 {
t.Fatalf("HasSSE2 expected true, got false")
}
}
}
func TestAVX2hasAVX(t *testing.T) {
if runtime.GOARCH == "amd64" {
if cpu.X86.HasAVX2 && !cpu.X86.HasAVX {
t.Fatalf("HasAVX expected true, got false")
}
}
}

59
src/internal/cpu/cpu_x86.go Normal file
View File

@ -0,0 +1,59 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build 386 amd64 amd64p32
package cpu
const CacheLineSize = 64
// cpuid is implemented in cpu_x86.s.
func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
// xgetbv with ecx = 0 is implemented in cpu_x86.s.
func xgetbv() (eax, edx uint32)
func init() {
maxId, _, _, _ := cpuid(0, 0)
if maxId < 1 {
return
}
_, _, ecx1, edx1 := cpuid(1, 0)
X86.HasSSE2 = isSet(26, edx1)
X86.HasSSE3 = isSet(0, ecx1)
X86.HasPCLMULQDQ = isSet(1, ecx1)
X86.HasSSSE3 = isSet(9, ecx1)
X86.HasSSE41 = isSet(19, ecx1)
X86.HasSSE42 = isSet(20, ecx1)
X86.HasPOPCNT = isSet(23, ecx1)
X86.HasAES = isSet(25, ecx1)
X86.HasOSXSAVE = isSet(27, ecx1)
osSupportsAVX := false
// For XGETBV, OSXSAVE bit is required and sufficient.
if X86.HasOSXSAVE {
eax, _ := xgetbv()
// Check if XMM and YMM registers have OS support.
osSupportsAVX = isSet(1, eax) && isSet(2, eax)
}
X86.HasAVX = isSet(28, ecx1) && osSupportsAVX
if maxId < 7 {
return
}
_, ebx7, _, _ := cpuid(7, 0)
X86.HasBMI1 = isSet(3, ebx7)
X86.HasAVX2 = isSet(5, ebx7) && osSupportsAVX
X86.HasBMI2 = isSet(8, ebx7)
X86.HasERMS = isSet(9, ebx7)
}
func isSet(bitpos uint, value uint32) bool {
return value&(1<<bitpos) != 0
}

32
src/internal/cpu/cpu_x86.s Normal file
View File

@ -0,0 +1,32 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build 386 amd64 amd64p32
#include "textflag.h"
// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
TEXT ·cpuid(SB), NOSPLIT, $0-24
MOVL eaxArg+0(FP), AX
MOVL ecxArg+4(FP), CX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func xgetbv() (eax, edx uint32)
TEXT ·xgetbv(SB),NOSPLIT,$0-8
#ifdef GOOS_nacl
// nacl does not support XGETBV.
MOVL $0, eax+0(FP)
MOVL $0, edx+4(FP)
#else
MOVL $0, CX
XGETBV
MOVL AX, eax+0(FP)
MOVL DX, edx+4(FP)
#endif
RET

15
src/math/floor_amd64.s
View File

@ -6,20 +6,9 @@
#define Big 0x4330000000000000 // 2**52
// func hasSSE4() bool
// returns whether SSE4.1 is supported
TEXT ·hasSSE4(SB),NOSPLIT,$0
XORQ AX, AX
INCL AX
CPUID
SHRQ $19, CX
ANDQ $1, CX
MOVB CX, ret+0(FP)
RET
// func Floor(x float64) float64
TEXT ·Floor(SB),NOSPLIT,$0
CMPB math·useSSE4(SB), $1
CMPB ·useSSE41(SB), $1
JNE nosse4
ROUNDSD $1, x+0(FP), X0
MOVQ X0, ret+8(FP)
@ -47,7 +36,7 @@ isBig_floor:
// func Ceil(x float64) float64
TEXT ·Ceil(SB),NOSPLIT,$0
CMPB math·useSSE4(SB), $1
CMPB ·useSSE41(SB), $1
JNE nosse4
ROUNDSD $2, x+0(FP), X0
MOVQ X0, ret+8(FP)

5
src/math/floor_asm.go
View File

@ -6,7 +6,6 @@
package math
//defined in floor_amd64.s
func hasSSE4() bool
import "internal/cpu"
var useSSE4 = hasSSE4()
var useSSE41 = cpu.X86.HasSSE41

21
src/runtime/asm_amd64.s
View File

@ -1706,27 +1706,6 @@ big_loop_avx2_exit:
VZEROUPPER
JMP loop
TEXT strings·supportAVX2(SB),NOSPLIT,$0-1
MOVBLZX runtime·support_avx2(SB), AX
MOVB AX, ret+0(FP)
RET
TEXT bytes·supportAVX2(SB),NOSPLIT,$0-1
MOVBLZX runtime·support_avx2(SB), AX
MOVB AX, ret+0(FP)
RET
TEXT strings·supportPOPCNT(SB),NOSPLIT,$0-1
MOVBLZX runtime·support_popcnt(SB), AX
MOVB AX, ret+0(FP)
RET
TEXT bytes·supportPOPCNT(SB),NOSPLIT,$0-1
MOVBLZX runtime·support_popcnt(SB), AX
MOVB AX, ret+0(FP)
RET
TEXT strings·indexShortStr(SB),NOSPLIT,$0-40
MOVQ s+0(FP), DI
// We want len in DX and AX, because PCMPESTRI implicitly consumes them

12
src/strings/strings_amd64.go
View File

@ -4,19 +4,19 @@
package strings
import "internal/cpu"
//go:noescape
// indexShortStr returns the index of the first instance of c in s, or -1 if c is not present in s.
// indexShortStr requires 2 <= len(c) <= shortStringLen
func indexShortStr(s, c string) int // ../runtime/asm_$GOARCH.s
func supportAVX2() bool // ../runtime/asm_$GOARCH.s
func supportPOPCNT() bool // ../runtime/asm_$GOARCH.s
func countByte(s string, c byte) int // ../runtime/asm_$GOARCH.s
func indexShortStr(s, c string) int // ../runtime/asm_amd64.s
func countByte(s string, c byte) int // ../runtime/asm_amd64.s
var shortStringLen int
func init() {
if supportAVX2() {
if cpu.X86.HasAVX2 {
shortStringLen = 63
} else {
shortStringLen = 31
@ -99,7 +99,7 @@ func Index(s, substr string) int {
// Count counts the number of non-overlapping instances of substr in s.
// If substr is an empty string, Count returns 1 + the number of Unicode code points in s.
func Count(s, substr string) int {
if len(substr) == 1 && supportPOPCNT() {
if len(substr) == 1 && cpu.X86.HasPOPCNT {
return countByte(s, byte(substr[0]))
}
return countGeneric(s, substr)