panic(boundsError{x: int64(hi)<<32 + int64(lo), signed: false, y: y, code: boundsSlice3C})
}

// Implemented in assembly, as they take arguments in registers.
// Declared here to mark them as ABIInternal.
func panicExtendIndex(hi int, lo uint, y int)
func panicExtendIndexU(hi uint, lo uint, y int)
func panicExtendSliceAlen(hi int, lo uint, y int)
func panicExtendSliceAlenU(hi uint, lo uint, y int)
func panicExtendSliceAcap(hi int, lo uint, y int)

		BoundsCheckFunc[ssa.BoundsConvert] = typecheck.LookupRuntimeFunc("panicSliceConvert")
	}
	if Arch.LinkArch.PtrSize == 4 {
		ExtendCheckFunc[ssa.BoundsIndex] = typecheck.LookupRuntimeVar("panicExtendIndex")
		ExtendCheckFunc[ssa.BoundsIndexU] = typecheck.LookupRuntimeVar("panicExtendIndexU")
		ExtendCheckFunc[ssa.BoundsSliceAlen] = typecheck.LookupRuntimeVar("panicExtendSliceAlen")