func libfuzzerTraceConstCmp2(uint16, uint16, uint)
func libfuzzerTraceConstCmp4(uint32, uint32, uint)
func libfuzzerTraceConstCmp8(uint64, uint64, uint)
func libfuzzerHookStrCmp(string, string, uint)
func libfuzzerHookEqualFold(string, string, uint)

func addCovMeta(p unsafe.Pointer, len uint32, hash [16]byte, pkpath string, pkgId int, cmode uint8, cgran uint8) uint32

// architecture variants
var x86HasPOPCNT bool

	{"libfuzzerTraceConstCmp2", funcTag, 150},
	{"libfuzzerTraceConstCmp4", funcTag, 151},
	{"libfuzzerTraceConstCmp8", funcTag, 152},
	{"libfuzzerHookStrCmp", funcTag, 153},
	{"libfuzzerHookEqualFold", funcTag, 153},
	{"addCovMeta", funcTag, 155},
	{"x86HasPOPCNT", varTag, 6},
	{"x86HasSSE41", varTag, 6},
	{"x86HasFMA", varTag, 6},
	{"armHasVFPv4", varTag, 6},
	{"arm64HasATOMICS", varTag, 6},

type hookInfo struct {
	paramType   types.Kind
	argsNum     int
	runtimeFunc string
}

var hooks = map[string]hookInfo{
	"strings.EqualFold": {paramType: types.TSTRING, argsNum: 2, runtimeFunc: "libfuzzerHookEqualFold"},
}

// walkCall walks an OCALLFUNC or OCALLINTER node.
func walkCall(n *ir.CallExpr, init *ir.Nodes) ir.Node {
	if n.Op() == ir.OCALLMETH {
		base.FatalfAt(n.Pos(), "OCALLMETH missed by typecheck")
	}