Added more simplification rules useful for complex arithmetic.
Added more simplification rules useful for complex arithmetic.


Former-commit-id: c896bd28b026e315a0a833c57c0a9e97f9fdc85f
Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide