isl_basic_map_project_out: special case obviously empty input
commitb15427f62fc2006cbd80f438804aa4d9694227e9
authorSven Verdoolaege <skimo@kotnet.org>
Fri, 14 Oct 2016 08:56:05 +0000 (14 10:56 +0200)
committerSven Verdoolaege <skimo@kotnet.org>
Tue, 21 Mar 2017 13:45:48 +0000 (21 14:45 +0100)
tree2ec16063491f9468b1083ef9297058da7ab21200
parentc7c406eac1c64b3044b3b26e29310ff92ff78502
isl_basic_map_project_out: special case obviously empty input

The input may simply have been marked empty, e.g., by
isl_basic_map_is_empty, but retaining its original constraints.
Make sure those original constraints have been removed
to avoid needless computations.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
isl_map.c