Improved asm sniffing in simd_op_check so it doesn't miss vst2
Improved asm sniffing in simd_op_check so it doesn't miss vst2


Former-commit-id: 3361e3bc3ac4d2364672140bf97a1e8cf5a14d08
darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide