//go:noescape
func getcallerpc() uintptr

//go:noescape
func getcallersp() uintptr // implemented as an intrinsic on all platforms

// getclosureptr returns the pointer to the current closure.
// getclosureptr can only be used in an assignment statement
// at the entry of a function. Moreover, go:nosplit directive
// must be specified at the declaration of caller function,

	return memhash(p, h, 2)
}

func memhash128(p unsafe.Pointer, h uintptr) uintptr {
	return memhash(p, h, 16)
}

//go:nosplit
func memhash_varlen(p unsafe.Pointer, h uintptr) uintptr {
	ptr := getclosureptr()
	size := *(*uintptr)(unsafe.Pointer(ptr + unsafe.Sizeof(h)))
	return memhash(p, h, size)
}

// runtime variable to check if the processor we're running on
// actually supports the instructions used by the AES-based

		mem)

// Checks
(IsNonNil ...) => (SNEZ ...)
(IsInBounds ...) => (Less64U ...)
(IsSliceInBounds ...) => (Leq64U ...)

// Trivial lowering
(NilCheck ...) => (LoweredNilCheck ...)
(GetClosurePtr ...) => (LoweredGetClosurePtr ...)
(GetCallerSP ...) => (LoweredGetCallerSP ...)
(GetCallerPC ...) => (LoweredGetCallerPC ...)

// Write barrier.
(WB ...) => (LoweredWB ...)

	// Pseudo-ops
	{name: "GetG", argLength: 1, zeroWidth: true}, // runtime.getg() (read g pointer). arg0=mem
	{name: "GetClosurePtr"},                       // get closure pointer from dedicated register
	{name: "GetCallerPC"},                         // for getcallerpc intrinsic

// Calls
// Lowering calls
(StaticCall ...) => (CALLstatic ...)
(ClosureCall ...) => (CALLclosure ...)
(InterCall ...) => (CALLinter ...)
(TailCall ...) => (CALLtail ...)

// Miscellaneous
(GetClosurePtr ...) => (LoweredGetClosurePtr ...)
(GetCallerSP ...) => (LoweredGetCallerSP ...)
(GetCallerPC ...) => (LoweredGetCallerPC ...)
(IsNonNil ptr) => (NotEqual (CMPconst [0] ptr))

(NilCheck ...) => (LoweredNilCheck ...)
(IsNonNil ptr) => (NotEqual (CMPconst [0] ptr))
(IsInBounds      idx len) => (LessThanU  (CMP idx len))
(IsSliceInBounds idx len) => (LessEqualU (CMP idx len))

// pseudo-ops
(GetClosurePtr ...) => (LoweredGetClosurePtr ...)
(GetCallerSP   ...) => (LoweredGetCallerSP   ...)
(GetCallerPC   ...) => (LoweredGetCallerPC   ...)

// Absorb pseudo-ops into blocks.

(IsSliceInBounds idx len) => (SETBE (CMPQ idx len))
(NilCheck ...) => (LoweredNilCheck ...)
(GetG mem) && v.Block.Func.OwnAux.Fn.ABI() != obj.ABIInternal => (LoweredGetG mem) // only lower in old ABI. in new ABI we have a G register.
(GetClosurePtr ...) => (LoweredGetClosurePtr ...)
(GetCallerPC ...) => (LoweredGetCallerPC ...)
(GetCallerSP ...) => (LoweredGetCallerSP ...)

(HasCPUFeature {s}) => (SETNE (CMPLconst [0] (LoweredHasCPUFeature {s})))

			s.vars[memVar] = s.newValue2(ssa.OpKeepAlive, types.TypeMem, data, s.mem())
			return nil
		},
		all...)
	add("runtime", "getclosureptr",
		func(s *state, n *ir.CallExpr, args []*ssa.Value) *ssa.Value {
			return s.newValue0(ssa.OpGetClosurePtr, s.f.Config.Types.Uintptr)
		},
		all...)

	add("runtime", "getcallerpc",
		func(s *state, n *ir.CallExpr, args []*ssa.Value) *ssa.Value {

		argLen:   2,
		nilCheck: true,
		generic:  true,
	},
	{
		name:      "GetG",
		argLen:    1,
		zeroWidth: true,
		generic:   true,
	},
	{
		name:    "GetClosurePtr",
		argLen:  0,
		generic: true,
	},
	{
		name:    "GetCallerPC",
		argLen:  0,
		generic: true,
	},
	{
		name:    "GetCallerSP",
		argLen:  1,

		v.Op = OpRISCV64FMADDD
		return true
	case OpGetCallerPC:
		v.Op = OpRISCV64LoweredGetCallerPC
		return true
	case OpGetCallerSP:
		v.Op = OpRISCV64LoweredGetCallerSP
		return true
	case OpGetClosurePtr:
		v.Op = OpRISCV64LoweredGetClosurePtr
		return true
	case OpHmul32:
		return rewriteValueRISCV64_OpHmul32(v)
	case OpHmul32u:
		return rewriteValueRISCV64_OpHmul32u(v)
	case OpHmul64: