buildcfg.GOARCH = goarch
	architecture := arch.Set(goarch, false)
	if architecture == nil {
		panic("asm: unrecognized architecture " + goarch)
	}
	ctxt := obj.Linknew(architecture.LinkArch)
	ctxt.Pkgpath = "pkg"
	return architecture, ctxt
}

func newParser(goarch string) *Parser {
	architecture, ctxt := setArch(goarch)
	return NewParser(ctxt, architecture, nil)
}

// sizeHistogram
func (h *sizeHistogram) mergeV1(v sizeHistogramV1) {
	var oidx, nidx int
	for oidx < len(v) {
		intOld, intNew := ObjectsHistogramIntervalsV1[oidx], ObjectsHistogramIntervals[nidx]
		// skip intervals that aren't common to both histograms
		if intOld.start != intNew.start || intOld.end != intNew.end {
			nidx++
			continue
		}
		h[nidx] += v[oidx]
		oidx++
		nidx++
	}
}