Some mv instructions were useful when first introduced to preserve a0 and a1 before function calls. However the code has changed and they are now redundant. Remove them. Signed-off-by: Nam Cao <namcaov@gmail.com> Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20230725053835.138910-1-namcaov@gmail.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>