// causing the bits in the input to be processed in the reverse of the usual order.

var crctab [256]uint32

func init() {
	const poly = 0x04C11DB7
	for i := range crctab {
		crc := uint32(i) << 24
		for j := 0; j < 8; j++ {
			if crc&0x80000000 != 0 {
				crc = (crc << 1) ^ poly
			} else {
				crc <<= 1
			}
		}
		crctab[i] = crc
	}
}

		t.funcnametab = data(3)
		t.cutab = data(4)
		t.filetab = data(5)
		t.pctab = data(6)
		t.funcdata = data(7)
		t.functab = data(7)
		functabsize := (int(t.nfunctab)*2 + 1) * t.functabFieldSize()
		t.functab = t.functab[:functabsize]
	case ver116:
		t.nfunctab = uint32(offset(0))
		t.nfiletab = uint32(offset(1))
		t.funcnametab = data(2)
		t.cutab = data(3)
		t.filetab = data(4)
		t.pctab = data(5)

//     a, b, c []byte,
//     rounds uint32,
// ) (retA uint32, retB uint32, retC uint32)
TEXT ·castagnoliSSE42Triple(SB),NOSPLIT,$0
	MOVL crcA+0(FP), AX
	MOVL crcB+4(FP), CX
	MOVL crcC+8(FP), DX

	MOVQ a+16(FP), R8   // data pointer
	MOVQ b+40(FP), R9   // data pointer
	MOVQ c+64(FP), R10  // data pointer

	MOVL rounds+88(FP), R11

loop:
	CRC32Q (R8), AX
	CRC32Q (R9), CX
	CRC32Q (R10), DX

	return cuOffsets
}

// generatePctab creates the runtime.pctab variable, holding all the
// deduplicated pcdata.
func (state *pclntab) generatePctab(ctxt *Link, funcs []loader.Sym) {
	ldr := ctxt.loader

	// Pctab offsets of 0 are considered invalid in the runtime. We respect
	// that by just padding a single byte at the beginning of runtime.pctab,
	// that way no real offsets can be zero.
	size := int64(1)

		// Compute CRC(I, A), CRC(0, B), and CRC(0, C).
		crcA, crcB, crcC := castagnoliSSE42Triple(
			crc, 0, 0,
			p, p[castagnoliK2:], p[castagnoliK2*2:],
			castagnoliK2/24)

		// CRC(I, AB) = CRC(CRC(I, A), O) xor CRC(0, B)
		crcAB := castagnoliShift(castagnoliSSE42TableK2, crcA) ^ crcB
		// CRC(I, ABC) = CRC(CRC(I, AB), O) xor CRC(0, C)
		crc = castagnoliShift(castagnoliSSE42TableK2, crcAB) ^ crcC
		p = p[castagnoliK2*3:]
	}

	if resultNameTab != nil {
		csa.rescoreBasedOnCallResultUses(fn, resultNameTab, cstab)
	}

	disableDebugTrace()

	if ic != nil && callSiteTab != nil {
		// Integrate the calls from this cstab into the table for the caller.
		if err := callSiteTab.merge(cstab); err != nil {
			base.FatalfAt(ic.Pos(), "%v", err)
		}
	} else {
		callSiteTab = cstab
	}
}

// ScoreCallsCleanup resets the state of the callsite cache

	funcnameOffset uintptr // offset to the funcnametab variable from pcHeader
	cuOffset       uintptr // offset to the cutab variable from pcHeader
	filetabOffset  uintptr // offset to the filetab variable from pcHeader
	pctabOffset    uintptr // offset to the pctab variable from pcHeader
	pclnOffset     uintptr // offset to the pclntab variable from pcHeader
}

//
// DESCRIPTION:
//
// Returns complex logarithm to the base e (2.718...) of
// the complex argument z.
//
// If
//       z = x + iy, r = sqrt( x**2 + y**2 ),
// then
//       w = log(r) + i arctan(y/x).
//
// The arctangent ranges from -PI to +PI.
//
// ACCURACY:
//
//                      Relative error:
// arithmetic   domain     # trials      peak         rms

	ifNil.Cond = ir.NewBinaryExpr(base.Pos, ir.OEQ, srcItab, typecheck.NodNil())
	base.Pos = base.Pos.WithNotStmt() // disable statement marks after the first check.
	ifNil.Cond = typecheck.Expr(ifNil.Cond)
	ifNil.Cond = typecheck.DefaultLit(ifNil.Cond, nil)
	// ifNil.Nbody assigned later.
	sw.Compiled.Append(ifNil)

	// Load hash from type or itab.
	dotHash := typeHashFieldOf(base.Pos, srcItab)

	// array and then call "f" on it.
	for pidx, p := range mm.pkgs {
		fids := make([]int, 0, len(p.ctab))
		for fid := range p.ctab {
			fids = append(fids, int(fid))
		}
		sort.Ints(fids)
		if *verbflag >= 4 {
			fmt.Printf("fids for pk=%d: %+v\n", pidx, fids)
		}
		for _, fid := range fids {
			fp := p.ctab[uint32(fid)]
			if *verbflag >= 4 {