// get writebarrier-ed or adjusted during a stack copy. This should handle
			// all the cases badPointerTypedef used to handle, but hopefully will
			// continue to work going forward without any more need for cgo changes.
			tt.Go = c.Ident(incomplete)
			typedef[name.Name] = &tt
			break
		}
		switch dt.Kind {
		case "class", "union":
			t.Go = c.Opaque(t.Size)

	GReg        register
	allocatable regMask

	// live values at the end of each block.  live[b.ID] is a list of value IDs
	// which are live at the end of b, together with a count of how many instructions
	// forward to the next use.
	live [][]liveInfo
	// desired register assignments at the end of each block.
	// Note that this is a static map computed before allocation occurs. Dynamic

				spInputs++
			} else {
				return false, r
			}
		}
		return v.Type.IsMemory() && memInputs == 1 &&
			regInputs == 1 && spInputs == 1, r
	}

	// OpArg*Reg values we've seen so far on our forward walk,
	// for which we have not yet seen a corresponding spill.
	regArgs := make([]ID, 0, 32)

	// removeReg tries to remove a value from regArgs, returning true
	// if found and removed, or false otherwise.

		//
		// aux | rounding mode
		// ----+-----------------------------------
		//   1 | round to nearest, ties away from 0
		//   4 | round to nearest, ties to even
		//   5 | round toward 0
		//   6 | round toward +∞
		//   7 | round toward -∞
		{name: "FIDBR", argLength: 1, reg: fp11, asm: "FIDBR", aux: "Int8"},

	t.wantEtype(TMAP)
	return t.extra.(*Map)
}

// Forward contains Type fields specific to forward types.
type Forward struct {
	Copyto      []*Type  // where to copy the eventual value to
	Embedlineno src.XPos // first use of this type as an embedded type
}

// forwardType returns t's extra forward-type-specific fields.
func (t *Type) forwardType() *Forward {
	t.wantEtype(TFORW)
	return t.extra.(*Forward)
}

			// this the start of a type parameter list, with some caveats:
			// a single name followed by "]" tilts the decision towards an
			// array declaration; a type parameter type that could also be
			// an ordinary expression but which is followed by a comma tilts
			// the decision towards a type parameter list.
			if pname, ptype := extractName(x, p.tok == _Comma); pname != nil && (ptype != nil || p.tok != _Rbrack) {

			for _, e := range e.ElemList {
				if kv, _ := e.(*syntax.KeyValueExpr); kv != nil {
					// Ideally, we should also "use" kv.Key but we can't know
					// if it's an externally defined struct key or not. Going
					// forward anyway can lead to other errors. Give up instead.
					e = kv.Value
				}
				check.use(e)
			}
			// if utyp is invalid, an error was reported before
			if isValid(utyp) {