p.From.Type = obj.TYPE_MEM
			p.From.Reg = srcReg
			p.From.Offset = offset + 32
			p.To.Type = obj.TYPE_REG
			p.To.Reg = ppc64.REG_VS32

			p = s.Prog(ppc64.ALXV)
			p.From.Type = obj.TYPE_MEM
			p.From.Reg = srcReg
			p.From.Offset = offset + 48
			p.To.Type = obj.TYPE_REG
			p.To.Reg = ppc64.REG_VS33

			// generate 16 byte stores
			p = s.Prog(ppc64.ASTXV)
			p.From.Type = obj.TYPE_REG

		case "linux":
			// Copied from golang.org/x/sys/unix/dev_linux.go.
			major := uint32((dev & 0x00000000000fff00) >> 8)
			major |= uint32((dev & 0xfffff00000000000) >> 32)
			minor := uint32((dev & 0x00000000000000ff) >> 0)
			minor |= uint32((dev & 0x00000ffffff00000) >> 12)
			h.Devmajor, h.Devminor = int64(major), int64(minor)
		case "darwin", "ios":
			// Copied from golang.org/x/sys/unix/dev_darwin.go.

// findPath returns the (reversed) list of objects []Object{to, ... from}
// such that there is a path of object dependencies from 'from' to 'to'.
// If there is no such path, the result is nil.
func findPath(objMap map[Object]*declInfo, from, to Object, seen map[Object]bool) []Object {
	if seen[from] {
		return nil
	}
	seen[from] = true

	for d := range objMap[from].deps {
		if d == to {
			return []Object{d}
		}

	_test/           old test directory, left from Makefiles
	_testmain.go     old gotest file, left from Makefiles
	test.out         old test log, left from Makefiles
	build.out        old test log, left from Makefiles
	*.[568ao]        object files, left from Makefiles

	DIR(.exe)        from go build
	DIR.test(.exe)   from go test -c
	MAINFILE(.exe)   from go build MAINFILE.go
	*.so             from SWIG

	// worthwhile.
	//
	// Graph pruning adds an extra wrinkle: a given node in the module graph
	// may be reached from a root whose dependencies are pruned, and from a root
	// whose dependencies are not pruned. It may be the case that the path from
	// the unpruned root leads to a conflict, while the path from the pruned root
	// prunes out the requirements that would lead to that conflict.

// assume that the version strings are semantic versions; instead, the Max method
// gives access to the comparison operation.
//
// It must be safe to call methods on a Reqs from multiple goroutines simultaneously.
// Because a Reqs may read the underlying graph from the network on demand,
// the MVS algorithms parallelize the traversal to overlap network delays.
type Reqs interface {

)

// cacheREADME is a message stored in a README in the cache directory.
// Because the cache lives outside the normal Go trees, we leave the
// README as a courtesy to explain where it came from.
const cacheREADME = `This directory holds cached build artifacts from the Go build system.
Run "go clean -cache" if the directory is getting too large.
Run "go clean -fuzzcache" to delete the fuzz cache.
See golang.org to learn more about Go.
`

		}
		// Assume all functions are referenced at least as
		// ABIInternal, since they may be referenced from
		// other packages.
		fn.ABIRefs.Set(obj.ABIInternal, true)

		// If a symbol is defined in this package (either in
		// Go or assembly) and given a linkname, it may be
		// referenced from another package, so make it
		// callable via any ABI. It's important that we know

				return nil, vcsErrorf("unexpected revno from bzr log: %q", line)
			}
			revno = i
		case "timestamp":
			j := strings.Index(val, " ")
			if j < 0 {
				return nil, vcsErrorf("unexpected timestamp from bzr log: %q", line)
			}
			t, err := time.Parse("2006-01-02 15:04:05 -0700", val[j+1:])
			if err != nil {
				return nil, vcsErrorf("unexpected timestamp from bzr log: %q", line)
			}
			tm = t.UTC()
		}

}

// compilerEnv returns a map from "goos/goarch" to the
// compiler setting to use for that platform.
// The entry for key "" covers any goos/goarch not explicitly set in the map.
// For example, compilerEnv("CC", "gcc") returns the C compiler settings
// read from $CC, defaulting to gcc.
//
// The result is a map because additional environment variables