Slightly reduced redundant code in benchmarks.
Slightly reduced redundant code in benchmarks.


Former-commit-id: ccfa9f9e7ba993643c54e4fe9e78e9bc3f83d166
darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide