The new [ParseOID] function parses a dot-encoded ASN.1 Object Identifier string.
The [OID] type now implements the [encoding.BinaryMarshaler],

	obj      Object // object denoted by x.f
	index    []int  // path from x to x.f
	indirect bool   // set if there was any pointer indirection on the path
}

// Kind returns the selection kind.
func (s *Selection) Kind() SelectionKind { return s.kind }

// Recv returns the type of x in x.f.
func (s *Selection) Recv() Type { return s.recv }

// Obj returns the object denoted by x.f; a *Var for

	stdout, err := cmd.Output()
	if err != nil {
		return nil, fmt.Errorf("cannot run go list: %v\n%s", err, stderr.Bytes())
	}
	dec := json.NewDecoder(bytes.NewReader(stdout))
	for {
		var pkg Pkg
		err := dec.Decode(&pkg)
		if err == io.EOF {
			break
		}
		if err != nil {
			return nil, fmt.Errorf("decoding go list json: %v", err)
		}
		pkgs[pkg.ImportPath] = &pkg
	}
	return pkgs, nil
}

	x = x*y + y
	return &x
}

//go:noinline
func f3a_ssa(x int) *int {
	return &x
}

//go:noinline
func f3b_ssa(x int) interface{} { // ./foo.go:15: internal error: f3b_ssa ~r1 (type interface {}) recorded as live on entry
	return &x
}

//go:noinline
func f3c_ssa(y int) interface{} {
	x := y
	return &x
}

type V struct {
	p    *V
	w, x int64
}

func args(t *testing.T) {

		fmt.Fprintf(w, "typs[%d] = %s\n", i, typ)
	}
	fmt.Fprintln(w, "return typs[:]")
	fmt.Fprintln(w, "}")
}

// typeInterner maps Go type expressions to compiler code that
// constructs the denoted type. It recognizes and reuses common
// subtype expressions.
type typeInterner struct {
	typs []string
	hash map[string]int
}

func (i *typeInterner) intern(t ast.Expr) int {
	x := i.mktype(t)

	// in the V7 path field as a directory even though the full path
	// recorded elsewhere (e.g., via PAX record) contains no trailing slash.
	if len(s) > len(b) && b[len(b)-1] == '/' {
		n := len(strings.TrimRight(s[:len(b)-1], "/"))
		b[n] = 0 // Replace trailing slash with NUL terminator
	}
}

// fitsInBase256 reports whether x can be encoded into n bytes using base-256

Field names refer to fields on RawPackage and rawFile.
The file uses little endian encoding for the uint32s.
Strings are written into the string table at the end of the file.
Each string is prefixed with a uvarint-encoded length.
Bools are written as uint32s: 0 for false and 1 for true.

The following is the format for a full module:

“go index v2\n”
str uint32 - offset of string table
n uint32 - number of packages

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "../../../../../runtime/textflag.h"

TEXT asmtest(SB),DUPOK|NOSPLIT,$0
	// Instructions that were encoded with BYTE sequences.
	// Included to simplify validation of CL that fixed that.
	MOVQ (AX), M0  // 0f6f00
	MOVQ M0, 8(SP) // 0f7f442408
	MOVQ 8(SP), M0 // 0f6f442408
	MOVQ M0, (AX)  // 0f7f00
	MOVQ M0, (BX)  // 0f7f03

		Set expected package import to pkgpath.
	-shared
		Generate code that can be linked into a shared library.
	-spectre list
		Enable spectre mitigations in list (all, ret).
	-trimpath prefix
		Remove prefix from recorded source file paths.
	-v
		Print debug output.

Input language:

The assembler uses mostly the same syntax for all architectures,
the main variation having to do with addressing modes. Input is

	OutputFile = flag.String("o", "", "output file; default foo.o for /a/b/c/foo.s as first argument")
	TrimPath   = flag.String("trimpath", "", "remove prefix from recorded source file paths")
	Shared     = flag.Bool("shared", false, "generate code that can be linked into a shared library")
	Dynlink    = flag.Bool("dynlink", false, "support references to Go symbols defined in other shared libraries")