}
			// Note: needReg is false for values returning Tuple types.
			// Instead, we mark the corresponding Selects as needReg.
		}
	}
	s.computeLive()

	s.endRegs = make([][]endReg, f.NumBlocks())
	s.startRegs = make([][]startReg, f.NumBlocks())
	s.spillLive = make([][]ID, f.NumBlocks())
	s.sdom = f.Sdom()

	// wasm: Mark instructions that can be optimized to have their values only on the WebAssembly stack.

		ctxt.Out.Write8(MIPS_FPABI_SOFT) // fpAbi
	} else {
		// Go cannot make sure non odd-number-fpr is used (ie, in load a double from memory).
		// So, we mark the object is MIPS I style paired float/double register scheme,
		// aka MIPS_FPABI_ANY. If we mark the object as FPXX, the kernel may use FR=1 mode,
		// then we meet some problem.
		// Note: MIPS_FPABI_ANY is bad naming: in fact it is MIPS I style FPR usage.
		//       It is not for 'ANY'.

				m.Errs = m.Errs[:0]
				mg, err := rs.Graph(ctx)
				if err != nil {
					// The module graph is (or may be) incomplete — perhaps we failed to
					// load the requirements of some module. This is an error in matching
					// the patterns to packages, because we may be missing some packages
					// or we may erroneously match packages in the wrong versions of
					// modules. However, for cases like 'go list -e', the error should not

				// over.
				//
				// So omitting a root that was previously present may *reduce* the
				// selected versions of non-roots, but merely removing a requirement
				// cannot *increase* the selected versions of other roots as a result —
				// we don't need to mark this change as an upgrade. (This particular
				// change cannot invalidate any other roots.)
				continue
			}

	order := make([]*sym.Library, 0, len(libs)) // hold the result
	mark := make(map[*sym.Library]markKind, len(libs))
	for _, lib := range libs {
		dfs(lib, mark, &order)
	}
	return order
}

func dfs(lib *sym.Library, mark map[*sym.Library]markKind, order *[]*sym.Library) {
	if mark[lib] == visited {
		return
	}
	if mark[lib] == visiting {
		panic("found import cycle while visiting " + lib.Pkg)

//
// Once a file descriptor has been returned from Accept, it may be used to
// perform SHA1 hashing. The descriptor is not safe for concurrent use, but
// may be re-used repeatedly with subsequent Write and Read operations.
//
// When hashing a small byte slice or string, a single Write and Read may
// be used:
//
//	// Assume hashfd is already configured using the setup process.

	}

	// Remove target before writing it.
	xremove(link[targ])
	bgrun(&wg, "", link...)
	bgwait(&wg)
}

// packagefile returns the path to a compiled .a file for the given package
// path. Paths may need to be resolved with resolveVendor first.
func packagefile(pkg string) string {
	return pathf("%s/pkg/obj/go-bootstrap/%s_%s/%s.a", goroot, goos, goarch, pkg)
}

When 'go test' runs a test binary, it does so from within the
corresponding package's source code directory. Depending on the test,
it may be necessary to do the same when invoking a generated test
binary directly. Because that directory may be located within the
module cache, which may be read-only and is verified by checksums, the
test must not write to it or any other directory within the module

	//	if b.Control != nil && b.Control.Type.IsFlags() {
	//		flive = true
	//	}
	//	for i := len(b.Values) - 1; i >= 0; i-- {
	//		v := b.Values[i]
	//		if flive && (v.Op == v.Op == ssa.OpPPC64MOVDconst) {
	//			// The "mark" is any non-nil Aux value.
	//			v.Aux = v
	//		}
	//		if v.Type.IsFlags() {
	//			flive = false
	//		}
	//		for _, a := range v.Args {
	//			if a.Type.IsFlags() {
	//				flive = true
	//			}
	//		}

// as PE and XCOFF are based on COFF files.
// XCOFF files generated are 64 bits.

const (
	// Total amount of space to reserve at the start of the file
	// for File Header, Auxiliary Header, and Section Headers.
	// May waste some.
	XCOFFHDRRESERVE = FILHSZ_64 + AOUTHSZ_EXEC64 + SCNHSZ_64*23

	// base on dump -o, then rounded from 32B to 64B to
	// match worst case elf text section alignment on ppc64.
	XCOFFSECTALIGN int64 = 64