// result: (SHLXL x y)
	for {
		x := v_0
		y := v_1
		if !(buildcfg.GOAMD64 >= 3) {
			break
		}
		v.reset(OpAMD64SHLXL)
		v.AddArg2(x, y)
		return true
	}
	return false
}
func rewriteValueAMD64latelower_OpAMD64SHLQ(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (SHLQ x y)
	// cond: buildcfg.GOAMD64 >= 3
	// result: (SHLXQ x y)
	for {
		x := v_0

	"testing"
)

func TestConfigFlags(t *testing.T) {
	os.Setenv("GOAMD64", "v1")
	if goamd64() != 1 {
		t.Errorf("Wrong parsing of GOAMD64=v1")
	}
	os.Setenv("GOAMD64", "v4")
	if goamd64() != 4 {
		t.Errorf("Wrong parsing of GOAMD64=v4")
	}
	Error = nil
	os.Setenv("GOAMD64", "1")
	if goamd64(); Error == nil {
		t.Errorf("Wrong parsing of GOAMD64=1")
	}

	os.Setenv("GORISCV64", "rva20u64")
	if goriscv64() != 20 {

	if x := os.Getenv(key); x != "" {
		return x
	}
	return value
}

func goamd64() int {
	switch v := envOr("GOAMD64", defaultGOAMD64); v {
	case "v1":
		return 1
	case "v2":
		return 2
	case "v3":
		return 3
	case "v4":
		return 4
	}
	Error = fmt.Errorf("invalid GOAMD64: must be v1, v2, v3, v4")
	return int(defaultGOAMD64[len("v")] - '0')
}

type goarmFeatures struct {

(MOVWQZX x) && zeroUpper48Bits(x,3)...

	telemetry.Inc("go/platform/target/goarch:" + cfg.Goarch)
	switch cfg.Goarch {
	case "386":
		telemetry.Inc("go/platform/target/go386:" + cfg.GO386)
	case "amd64":
		telemetry.Inc("go/platform/target/goamd64:" + cfg.GOAMD64)
	case "arm":
		telemetry.Inc("go/platform/target/goarm:" + cfg.GOARM)
	case "arm64":
		telemetry.Inc("go/platform/target/goarm64:" + cfg.GOARM64)
	case "mips":

	CGO_CXXFLAGS_DISALLOW
	CGO_ENABLED
	CGO_FFLAGS
	CGO_FFLAGS_ALLOW
	CGO_FFLAGS_DISALLOW
	CGO_LDFLAGS
	CGO_LDFLAGS_ALLOW
	CGO_LDFLAGS_DISALLOW
	CXX
	FC
	GCCGO
	GO111MODULE
	GO386
	GOAMD64
	GOARCH
	GOARM
	GOARM64
	GOBIN
	GOCACHE
	GOCACHEPROG
	GOENV
	GOEXE
	GOEXPERIMENT
	GOFLAGS
	GOGCCFLAGS
	GOHOSTARCH
	GOHOSTOS
	GOINSECURE
	GOMIPS
	GOMIPS64
	GOMODCACHE

	fmt.Fprintln(&buf)
	fmt.Fprintf(&buf, "import \"runtime\"\n")
	fmt.Fprintln(&buf)
	fmt.Fprintf(&buf, "const defaultGO386 = `%s`\n", go386)
	fmt.Fprintf(&buf, "const defaultGOAMD64 = `%s`\n", goamd64)
	fmt.Fprintf(&buf, "const defaultGOARM = `%s`\n", goarm)
	fmt.Fprintf(&buf, "const defaultGOARM64 = `%s`\n", goarm64)
	fmt.Fprintf(&buf, "const defaultGOMIPS = `%s`\n", gomips)