// Rewrite mask to apply after the final left shift.
	mask_3 := (mask_1 & mask_2) << uint(GetPPC64Shiftsh(sld))

	r_1 := 32 - srw
	r_2 := GetPPC64Shiftsh(sld)
	r_3 := (r_1 + r_2) & 31 // This can wrap.

	if uint64(uint32(mask_3)) != mask_3 || mask_3 == 0 {
		return 0
	}
	return encodePPC64RotateMask(int64(r_3), int64(mask_3), 32)
}

									CacheSize:  pointer.Int32(10),
								},
							},
						},
					},
				},
			},
			expectedError: "resource \"secrets\" is masked by earlier rule \"*.\"",
		},
		{
			desc: "*. masked by *. group",
			config: &apiserver.EncryptionConfiguration{
				Resources: []apiserver.ResourceConfiguration{
					{
						Resources: []string{
							"*.",
						},

			masked: Prefix{},
		},
	}
	for _, test := range tests {
		t.Run(test.prefix.String(), func(t *testing.T) {
			got := test.prefix.Masked()
			if got != test.masked {
				t.Errorf("Masked=%s, want %s", got, test.masked)
			}
		})
	}
}

func TestPrefix(t *testing.T) {
	tests := []struct {
		prefix      string
		ip          Addr
		bits        int
		str         string

	// the address of the first word referenced by mask.
	addr uintptr

	// mask is a bitmask where each bit corresponds to pointer-words after addr.
	// Bit 0 is the pointer-word at addr, Bit 1 is the next word, and so on.
	// If a bit is 1, then there is a pointer at that word.
	// nextFast and next mask out bits in this mask as their pointers are processed.
	mask uintptr

}

// allocReg chooses a register from the set of registers in mask.
// If there is no unused register, a Value will be kicked out of
// a register to make room.
func (s *regAllocState) allocReg(mask regMask, v *Value) register {
	if v.OnWasmStack {
		return noRegister
	}

	mask &= s.allocatable
	mask &^= s.nospill
	if mask == 0 {
		s.f.Fatalf("no register available for %s", v.LongString())
	}

      padded_val.push_back(padding_val[i]);
      if (mask) *mask |= 1 << i;
    }
  }

  LogicalResult matchAndRewrite(Operation *op,
                                PatternRewriter &rewriter) const override {
    TF::StridedSliceOp strided_slice_op = llvm::cast<TF::StridedSliceOp>(op);

    // Handle ellipsis mask.
    if (strided_slice_op.getEllipsisMask() != 0) {

//sys	fanotifyMark(fd int, flags uint, mask uint64, dirFd int, pathname *byte) (err error)

func FanotifyMark(fd int, flags uint, mask uint64, dirFd int, pathname string) (err error) {
	if pathname == "" {
		return fanotifyMark(fd, flags, mask, dirFd, nil)
	}
	p, err := BytePtrFromString(pathname)
	if err != nil {
		return err
	}
	return fanotifyMark(fd, flags, mask, dirFd, p)
}

	}

	pattern := event.NewPattern(prefix, suffix)

	var eventNames []event.Name
	var mask pubsub.Mask
	for _, ev := range values[peerRESTListenEvents] {
		eventName, err := event.ParseName(ev)
		if err != nil {
			return grid.NewRemoteErr(err)
		}
		mask.MergeMaskable(eventName)
		eventNames = append(eventNames, eventName)
	}

func (b PSAPI_WORKING_SET_EX_BLOCK) intField(start, length int) uint64 {
	var mask PSAPI_WORKING_SET_EX_BLOCK
	for pos := start; pos < start+length; pos++ {
		mask |= (1 << pos)
	}

	masked := b & mask
	return uint64(masked >> start)
}

// PSAPI_WORKING_SET_EX_INFORMATION contains extended working set information for a process.

// is valid to merge the shift mask (^(uint64(0)<<c)) into the selected
// bits mask (i.e. that the resultant mask is non-zero and contiguous).
//
(RISBGZ (SLDconst x [c]) {r}) && r.InMerge(^uint64(0)<<c) != nil => (RISBGZ x {(*r.InMerge(^uint64(0)<<c)).RotateLeft(c)})
(RISBGZ (SRDconst x [c]) {r}) && r.InMerge(^uint64(0)>>c) != nil => (RISBGZ x {(*r.InMerge(^uint64(0)>>c)).RotateLeft(-c)})