re PR target/9348 ([HP-UX] error in int to unsigned long multiplication)
PR target/9348
* expr.c (expand_expr_real) <MULT_EXPR>: When performing widening
multiplies with a multiplication of the wrong signedness, its the
signedness of the multiplication that we've performed that needs to
be passed to expand_mult_highpart_adjust. Avoid emitting a nop-move
if expand_mult_highpart_adjust places the result in target.
* gcc.c-torture/execute/multdi-1.c: New test case.