Simplified codegen for conditional Allocates.
Simplified codegen for conditional Allocates.


Former-commit-id: 6d6e2b7160e4b3af926c38ffc64f7619a05bb426
darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide