Added a benchmark to quantify the benefit of fusion
Added a benchmark to quantify the benefit of fusion


Former-commit-id: 27c2b6aaa1d6554a8d17151fe7baaaaec569d5df
Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide