On Sun, Mar 9, 2008 at 08:15, Richard Guenther <richard.guenther@gmail.com> wrote: > What is GIMPLE_SINGLE_RHS after all? Represents a "copy" operation, an operand with no operator (e.g., a = 3, b = c) '3' and 'c' are "single" operands. There is no operator involved in the assignment.