sbgemm: avoid falling into SGEMM_KERNEL_DIRECT
sbgemm: avoid falling into SGEMM_KERNEL_DIRECT

xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS