QUO_ASSIGN // /=
	REM_ASSIGN // %=

	AND_ASSIGN     // &=
	OR_ASSIGN      // |=
	XOR_ASSIGN     // ^=
	SHL_ASSIGN     // <<=
	SHR_ASSIGN     // >>=
	AND_NOT_ASSIGN // &^=

	LAND  // &&
	LOR   // ||
	ARROW // <-
	INC   // ++
	DEC   // --

	EQL    // ==
	LSS    // <
	GTR    // >
	ASSIGN // =
	NOT    // !

	NEQ      // !=
	LEQ      // <=
	GEQ      // >=
	DEFINE   // :=

		e := n.(*ast.BinaryExpr)
		if seen[e] {
			// Already processed as a subexpression of an earlier node.
			return
		}

		var op boolOp
		switch e.Op {
		case token.LOR:
			op = or
		case token.LAND:
			op = and
		default:
			return
		}

		comm := op.commutativeSets(pass.TypesInfo, e, seen)
		for _, exprs := range comm {
			op.checkRedundant(pass, exprs)

	SRAV	$12, R3		// 00031b3b
	ROTR	$12, R8		// 00284302
	ROTRV	$63, R22	// 0036b7fe


//	LAND/LXOR/LNOR/LOR rreg ',' rreg
//	{
//		outcode(int($1), &$2, 0, &$4);
//	}
	AND	R14, R8		// 010e4024
	XOR	R15, R9		// 012f4826
	NOR	R16, R10	// 01505027
	OR	R17, R11	// 01715825

//	LAND/LXOR/LOR imm ',' rreg
//	{
//		outcode(int($1), &$2, 0, &$4);
//	}
	AND	$11, R17, R7	// 3227000b

        <!--</module>-->

        <!-- Coding -->

				tok = s.switch2(token.AND_NOT, token.AND_NOT_ASSIGN)
			} else {
				tok = s.switch3(token.AND, token.AND_ASSIGN, '&', token.LAND)
			}
		case '|':
			tok = s.switch3(token.OR, token.OR_ASSIGN, '|', token.LOR)
		case '~':
			tok = token.TILDE
		default:
			// next reports unexpected BOMs - don't repeat
			if ch != bom {
				// Report an informative error for U+201[CD] quotation

	{token.XOR_ASSIGN, "^=", operator},
	{token.SHL_ASSIGN, "<<=", operator},
	{token.SHR_ASSIGN, ">>=", operator},
	{token.AND_NOT_ASSIGN, "&^=", operator},

	{token.LAND, "&&", operator},
	{token.LOR, "||", operator},
	{token.ARROW, "<-", operator},
	{token.INC, "++", operator},
	{token.DEC, "--", operator},

	{token.EQL, "==", operator},
	{token.LSS, "<", operator},
	{token.GTR, ">", operator},

	x, y := match(x_, y_)

	switch x := x.(type) {
	case unknownVal:
		return x

	case boolVal:
		y := y.(boolVal)
		switch op {
		case token.LAND:
			return x && y
		case token.LOR:
			return x || y
		}

	case int64Val:
		a := int64(x)
		b := int64(y.(int64Val))
		var c int64
		switch op {
		case token.ADD:
			if !is63bit(a) || !is63bit(b) {

		token.QUO: allNumeric,
		token.REM: allInteger,

		token.AND:     allInteger,
		token.OR:      allInteger,
		token.XOR:     allInteger,
		token.AND_NOT: allInteger,

		token.LAND: allBoolean,
		token.LOR:  allBoolean,
	}
}

// If e != nil, it must be the binary expression; it may be nil for non-constant expressions
// (when invoked for an assignment operation where the binary expression is implicit).

		w.CanFail = true
		if last, ok := last.(*CondBreak); ok {
			// Add to the previous "if <cond> { break }" via a
			// logical OR, which will save verbosity.
			last.Cond = &ast.BinaryExpr{
				Op: token.LOR,
				X:  last.Cond,
				Y:  node.Cond,
			}
			return
		}
	}

	w.List = append(w.List, node)
}

// predeclared contains globally known tokens that should not be redefined.

}

// op2tok translates syntax.Operators into token.Tokens.
var op2tok = [...]token.Token{
	syntax.Def:  token.ILLEGAL,
	syntax.Not:  token.NOT,
	syntax.Recv: token.ILLEGAL,

	syntax.OrOr:   token.LOR,
	syntax.AndAnd: token.LAND,

	syntax.Eql: token.EQL,
	syntax.Neq: token.NEQ,
	syntax.Lss: token.LSS,
	syntax.Leq: token.LEQ,
	syntax.Gtr: token.GTR,
	syntax.Geq: token.GEQ,