Having the last pass be CSE pulled out constants that mess up codegen
Having the last pass be CSE pulled out constants that mess up codegen


Former-commit-id: 899b73f28ef4288fa731ad6146ebe07da06008e9
darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide