(Zero [1] ptr mem) => (MOVBstore ptr (MOVWconst [0]) mem)
(Zero [2] {t} ptr mem) && t.Alignment()%2 == 0 =>
	(MOVHstore ptr (MOVWconst [0]) mem)
(Zero [2] ptr mem) =>
	(MOVBstore [1] ptr (MOVWconst [0])
		(MOVBstore [0] ptr (MOVWconst [0]) mem))
(Zero [4] {t} ptr mem) && t.Alignment()%4 == 0 =>
	(MOVWstore ptr (MOVWconst [0]) mem)
(Zero [4] {t} ptr mem) && t.Alignment()%2 == 0 =>
	(MOVHstore [2] ptr (MOVWconst [0])

		panic("bad package prefix")
	}
	return p.Prefix == "sync/atomic" || p.Prefix == "internal/runtime/atomic"
}

// CalcSize calculates and stores the size, alignment, eq/hash algorithm,
// and ptrBytes for t.
// If CalcSizeDisabled is set, and the size/alignment
// have not already been calculated, it calls Fatal.
// This is used to prevent data races in the back end.
func CalcSize(t *Type) {

func parseNotes(reader io.Reader, alignment int, order binary.ByteOrder) ([]elfNote, error) {
	r := bufio.NewReader(reader)

	// padding returns the number of bytes required to pad the given size to an
	// alignment boundary.
	padding := func(size int) int {
		return ((size + (alignment - 1)) &^ (alignment - 1)) - size
	}

	var notes []elfNote
	for {

// AlignmentPadding bytes to add to align code as requested.
// Alignment is restricted to powers of 2 between 8 and 2048 inclusive.
//
// pc_: current offset in function, in bytes
// p:  a PCALIGN or PCALIGNMAX prog
// ctxt: the context, for current function
// cursym: current function being assembled
// returns number of bytes of padding needed,
// updates minimum alignment for the function.

	"bar"  // a comment
)

// comments + renames
import (
       "unrenamed" // a comment
       renamed "renameMe"
       . "io" /* a comment */
       _ "io/ioutil" // a comment
       "io" // testing alignment
       . "os"
       // a comment
)

// a case that caused problems in the past (comment placement)
import (
	. "fmt"
	"io"
	"malloc"	// for the malloc count test only
	"math"
	"strings"

	FileAttributes uint32

	// Pad out to 8-byte alignment.
	//
	// Without this padding, TestChmod fails due to an argument validation error
	// in SetFileInformationByHandle on windows/386.
	//
	// https://learn.microsoft.com/en-us/cpp/build/reference/zp-struct-member-alignment?view=msvc-170
	// says that “The C/C++ headers in the Windows SDK assume the platform's
	// default alignment is used.” What we see here is padding rather than

where better alignment (8 or 16 instead of 4) might be helpful. This directive
exists in PPC64 assembler and is frequently used by PPC64 assembler writers.

PCALIGN $16
PCALIGN $8

By default, functions in Go are aligned to 16 bytes, as is the case in all
other compilers for PPC64. If there is a PCALIGN directive requesting alignment
greater than 16, then the alignment of the containing function must be

		}

		alignment := make(map[int]int)
		if m.deviceHasTopologyAlignment(tc.resource) {
			for d := range allocated {
				if m.allDevices[tc.resource][d].Topology != nil {
					alignment[int(m.allDevices[tc.resource][d].Topology.Nodes[0].ID)]++
				}
			}
		}

		if !reflect.DeepEqual(alignment, tc.expectedAlignment) {

	"bar"
	"foo"	// a comment
	"bar"	// a comment
)

// comments + renames
import (
	"unrenamed"	// a comment
	renamed "renameMe"
	. "io"		/* a comment */
	_ "io/ioutil"	// a comment
	"io"		// testing alignment
	. "os"
	// a comment
)

// a case that caused problems in the past (comment placement)
import (
	. "fmt"
	"io"
	"malloc"	// for the malloc count test only
	"math"
	"strings"
	"testing"
)

		a.fregs++
	}
	return true
}

// stackAssign reserves space for one value that is "size" bytes
// large with alignment "alignment" to the stack.
//
// Should not be called directly; use addArg instead.
func (a *abiSeq) stackAssign(size, alignment uintptr) {
	a.stackBytes = align(a.stackBytes, alignment)
	a.steps = append(a.steps, abiStep{
		kind:   abiStepStack,