lossless_cast only recurses into widening casts
lossless_cast only recurses into widening casts


Former-commit-id: 78b6af8b870569470209c0a82f2c4d01e3fde4d0
Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide