isl_printer_print_pw_aff: use isl_ast_build_expr_from_pw_aff in C format
In
554e4d0 (isl_printer_print_pw_aff: use isl_ast_expr when printing in
C format, Mon May 14 17:30:25 2012 +0200), we already changed
print_pw_aff_c to first convert each of the quasi-affine expressions
to an isl_ast_expr. Since then, the construction of isl_ast_expr
from an isl_set has also been improved, so we may as well
just call isl_ast_build_expr_from_pw_aff on the entire isl_pw_aff
to take advantage of these improvements too.
Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>