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crypto/bn256: full switchover to cloudflare's code (#16301)

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* crypto/bn256: full switchover to cloudflare's code

* crypto/bn256: only use cloudflare for optimized architectures

* crypto/bn256: upstream fallback for non-optimized code

* .travis, build: drop support for Go 1.8 (need type aliases)

* crypto/bn256/cloudflare: enable curve mul lattice optimization
This commit is contained in:
Péter Szilágyi
2018-03-20 01:13:54 +09:00
committed by GitHub
parent 0965761a45
commit 1203c6a237
22 changed files with 783 additions and 174 deletions
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16
build/ci.go
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@ -182,13 +182,13 @@ func doInstall(cmdline []string) {
// Check Go version. People regularly open issues about compilation
// failure with outdated Go. This should save them the trouble.
if !strings.Contains(runtime.Version(), "devel") {
// Figure out the minor version number since we can't textually compare (1.10 < 1.8)
// Figure out the minor version number since we can't textually compare (1.10 < 1.9)
var minor int
fmt.Sscanf(strings.TrimPrefix(runtime.Version(), "go1."), "%d", &minor)
if minor < 8 {
if minor < 9 {
log.Println("You have Go version", runtime.Version())
log.Println("go-ethereum requires at least Go version 1.8 and cannot")
log.Println("go-ethereum requires at least Go version 1.9 and cannot")
log.Println("be compiled with an earlier version. Please upgrade your Go installation.")
os.Exit(1)
}
@ -262,16 +262,6 @@ func goTool(subcmd string, args ...string) *exec.Cmd {
func goToolArch(arch string, cc string, subcmd string, args ...string) *exec.Cmd {
cmd := build.GoTool(subcmd, args...)
if subcmd == "build" || subcmd == "install" || subcmd == "test" {
// Go CGO has a Windows linker error prior to 1.8 (https://github.com/golang/go/issues/8756).
// Work around issue by allowing multiple definitions for <1.8 builds.
var minor int
fmt.Sscanf(strings.TrimPrefix(runtime.Version(), "go1."), "%d", &minor)
if runtime.GOOS == "windows" && minor < 8 {
cmd.Args = append(cmd.Args, []string{"-ldflags", "-extldflags -Wl,--allow-multiple-definition"}...)
}
}
cmd.Env = []string{"GOPATH=" + build.GOPATH()}
if arch == "" || arch == runtime.GOARCH {
cmd.Env = append(cmd.Env, "GOBIN="+GOBIN)