Fixed cpuid to not clobber stack.
Fixed cpuid to not clobber stack.


Former-commit-id: 6f40b3bf6b723cc52a59e1c2fd65e725e287d485
darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide