Function renorm_cabac_decoder_once

libavcodec/cabac.h:302–369

}

static inline void renorm_cabac_decoder_once(CABACContext *c){
#ifdef ARCH_X86_DISABLED
    int temp;
#if 0
    //P3:683    athlon:475
    __asm__(
        "lea -0x100(%0), %2         \n\t"
        "shr $31, %2                \n\t"  //FIXME 31->63 for x86-64
        "shl %%cl, %0               \n\t"
        "shl %%cl, %1               \n\t"
        : "+r"(c->range), "+r"(c->low), "+c"(temp)
    );
#elif 0
    //P3:680    athlon:474
    __asm__(
        "cmp $0x100, %0             \n\t"
        "setb %%cl                  \n\t"  //FIXME 31->63 for x86-64
        "shl %%cl, %0               \n\t"
        "shl %%cl, %1               \n\t"
        : "+r"(c->range), "+r"(c->low), "+c"(temp)
    );
#elif 1
    int temp2;
    //P3:665    athlon:517
    __asm__(
        "lea -0x100(%0), %%eax      \n\t"
        "cltd                       \n\t"
        "mov %0, %%eax              \n\t"
        "and %%edx, %0              \n\t"
        "and %1, %%edx              \n\t"
        "add %%eax, %0              \n\t"
        "add %%edx, %1              \n\t"
        : "+r"(c->range), "+r"(c->low), "+a"(temp), "+d"(temp2)
    );
#elif 0
    int temp2;
    //P3:673    athlon:509
    __asm__(
        "cmp $0x100, %0             \n\t"
        "sbb %%edx, %%edx           \n\t"
        "mov %0, %%eax              \n\t"
        "and %%edx, %0              \n\t"
        "and %1, %%edx              \n\t"
        "add %%eax, %0              \n\t"
        "add %%edx, %1              \n\t"
        : "+r"(c->range), "+r"(c->low), "+a"(temp), "+d"(temp2)
    );
#else
    int temp2;
    //P3:677    athlon:511
    __asm__(
        "cmp $0x100, %0             \n\t"
        "lea (%0, %0), %%eax        \n\t"
        "lea (%1, %1), %%edx        \n\t"
        "cmovb %%eax, %0            \n\t"
        "cmovb %%edx, %1            \n\t"
        : "+r"(c->range), "+r"(c->low), "+a"(temp), "+d"(temp2)
    );