Commit f0e3ade7 authored by multrus's avatar multrus Committed by Sandesh Venkatesh
Browse files

Optimize minimum_s(), minimum_l(), avoid IF

parent 75e324a3

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -93,4 +93,5 @@ 
#define FIX_1052_COPY_CMPLX_DISCREPANCY       /* VA: modify IF-ELSE statements used in Copy*() functions to avoid dependency on x[] and y[] in RAM */

#define FIX_1049_SHR_RO_COMPLEXITY              /* VA: fix for issue 1049: incorrect counting of complexity in the shr_ro() function */

#define FIX_1103_OPT_L_NORM_ARR                 /* FhG: Optimize L_norm_arr(), avoid IF */

#define FIX_1105_OPT_MINIMUM_SL                 /* FhG: Optimize minimum_s(), minimum_l(), avoid IF */

#endif

lib_com/tools.c

+34 −0
Original line number Diff line number Diff line
@@ -879,15 +879,27 @@ Word16 minimum_s( 
    Word16 *min_val    /* o  : minimum value in the input vector */

)

{

#ifdef FIX_1105_OPT_MINIMUM_SL

    Word16 i, ind;

#else

    Word16 i, ind, tmp;

#endif



    ind = 0;

    move16();

#ifndef FIX_1105_OPT_MINIMUM_SL

    tmp = vec[0];

    move16();

#endif



    FOR( i = 1; i < lvec; i++ )

    {

#ifdef FIX_1105_OPT_MINIMUM_SL

        if ( LT_16( vec[i], vec[ind] ) )

        {

            ind = add( i, 0 );

        }

#else

        IF( LT_16( vec[i], tmp ) )

        {

            ind = i;
@@ -895,11 +907,16 @@ Word16 minimum_s( 
            tmp = vec[i];

            move16();

        }

#endif

    }



    if ( min_val != NULL )

    {

#ifdef FIX_1105_OPT_MINIMUM_SL

        *min_val = vec[ind];

#else

        *min_val = tmp;

#endif

        move16();

    }
@@ -920,15 +937,27 @@ Word16 minimum_l( 
)

{

    Word16 i, ind;

#ifndef FIX_1105_OPT_MINIMUM_SL

    Word32 tmp;

#endif



    ind = 0;

#ifndef FIX_1105_OPT_MINIMUM_SL

    tmp = vec[0];

#endif

    move16();

#ifndef FIX_1105_OPT_MINIMUM_SL

    move32();

#endif



    FOR( i = 1; i < lvec; i++ )

    {

#ifdef FIX_1105_OPT_MINIMUM_SL

        if ( LT_32( vec[i], vec[ind] ) )

        {

            ind = add( i, 0 );

        }

#else

        IF( LT_32( vec[i], tmp ) )

        {

            ind = i;
@@ -936,11 +965,16 @@ Word16 minimum_l( 
            move16();

            move32();

        }

#endif

    }



    if ( min_val != NULL )

    {

#ifdef FIX_1105_OPT_MINIMUM_SL

        *min_val = vec[ind];

#else

        *min_val = tmp;

#endif

        move32();

    }