Commit 71e73340 authored by multrus's avatar multrus Committed by Sandesh Venkatesh
Browse files

optimize frequent case of v_add_inc_fx()

parent 3187b18a

lib_com/ivas_tools.c

+25 −0
Original line number Diff line number Diff line
@@ -308,10 +308,35 @@ void v_add_inc_fx( 
    const Word16 N       /* i  : Vector length                         Q0*/

)

{

#ifndef FIX_1107_VADDINC

    Word16 i;

    Word16 ix1 = 0;

    Word16 ix2 = 0;

    Word16 iy = 0;

#else

    Word16 i, ix1, ix2, iy;



    /* The use of this function is currently always for the interleaved input format, */

    /* that means, the following conditions are always true and thus obsolete.        */

    test();

    test();

    test();

    test();

    IF( ( sub( x_inc, 2 ) == 0 ) && ( sub( x2_inc, 2 ) == 0 ) && ( sub( y_inc, 1 ) == 0 ) && ( &x1[1] == &x2[0] ) )

    {

        /* Interleaved input case, linear output */

        FOR( i = 0; i < N; i++ )

        {

            y[i] = L_add( x1[2 * i + 0], x1[2 * i + 1] ); /*Qx*/

            move32();

        }

        return;

    }



    ix1 = 0;

    ix2 = 0;

    iy = 0;

#endif

    move16();

    move16();

    move16();

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -96,4 +96,5 @@ 
#define FIX_1105_OPT_MINIMUM_SL                 /* FhG: Optimize minimum_s(), minimum_l(), avoid IF */

#define FIX_1104_OPT_GETMINSCALEFAC             /* FhG: Optimize get_min_scalefactor(), avoid IF */

#define FIX_1106_SIMPLIFY_SET32FX               /* FhG: simplify set32_fx() */

#define FIX_1107_VADDINC                        /* FhG: Optimize v_add_inc_fx() for most frequent case */

#endif