Commit 6361d298 authored by Laurent Vivier's avatar Laurent Vivier
Browse files

m68k: remove dead code (Coverity CID1390617) 



floatx80_sin() and floatx80_cos() are derived from one
sincos() function. They have both unused code coming from
their common origin. Remove it.

Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Message-Id: <20180430170156.1860-2-laurent@vivier.eu>
parent 981348af

target/m68k/softfloat.c

+14 −29
Original line number Diff line number Diff line
@@ -1497,7 +1497,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status) 
    int32_t compact, l, n, j;

    floatx80 fp0, fp1, fp2, fp3, fp4, fp5, x, invtwopi, twopi1, twopi2;

    float32 posneg1, twoto63;

    flag adjn, endflag;

    flag endflag;



    aSig = extractFloatx80Frac(a);

    aExp = extractFloatx80Exp(a);
@@ -1515,8 +1515,6 @@ floatx80 floatx80_sin(floatx80 a, float_status *status) 
        return packFloatx80(aSign, 0, 0);

    }



    adjn = 0;



    user_rnd_mode = status->float_rounding_mode;

    user_rnd_prec = status->floatx80_rounding_precision;

    status->float_rounding_mode = float_round_nearest_even;
@@ -1591,14 +1589,8 @@ floatx80 floatx80_sin(floatx80 a, float_status *status) 
            status->float_rounding_mode = user_rnd_mode;

            status->floatx80_rounding_precision = user_rnd_prec;



            if (adjn) {

                /* COSTINY */

                a = floatx80_sub(fp0, float32_to_floatx80(

                                 make_float32(0x00800000), status), status);

            } else {

            /* SINTINY */

            a = floatx80_move(a, status);

            }

            float_raise(float_flag_inexact, status);



            return a;
@@ -1616,7 +1608,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status) 
                           status); /* FP0 IS R = (X-Y1)-Y2 */



    sincont:

        if ((n + adjn) & 1) {

        if (n & 1) {

            /* COSPOLY */

            fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */

            fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */
@@ -1629,7 +1621,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status) 
            xExp = extractFloatx80Exp(fp0);

            xSig = extractFloatx80Frac(fp0);



            if (((n + adjn) >> 1) & 1) {

            if ((n >> 1) & 1) {

                xSign ^= 1;

                posneg1 = make_float32(0xBF800000); /* -1 */

            } else {
@@ -1681,7 +1673,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status) 
            xExp = extractFloatx80Exp(fp0);

            xSig = extractFloatx80Frac(fp0);



            xSign ^= ((n + adjn) >> 1) & 1; /* X IS NOW R'= SGN*R */

            xSign ^= (n >> 1) & 1; /* X IS NOW R'= SGN*R */



            fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */

            fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */
@@ -1744,7 +1736,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) 
    int32_t compact, l, n, j;

    floatx80 fp0, fp1, fp2, fp3, fp4, fp5, x, invtwopi, twopi1, twopi2;

    float32 posneg1, twoto63;

    flag adjn, endflag;

    flag endflag;



    aSig = extractFloatx80Frac(a);

    aExp = extractFloatx80Exp(a);
@@ -1762,8 +1754,6 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) 
        return packFloatx80(0, one_exp, one_sig);

    }



    adjn = 1;



    user_rnd_mode = status->float_rounding_mode;

    user_rnd_prec = status->floatx80_rounding_precision;

    status->float_rounding_mode = float_round_nearest_even;
@@ -1837,15 +1827,10 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) 
            status->float_rounding_mode = user_rnd_mode;

            status->floatx80_rounding_precision = user_rnd_prec;



            if (adjn) {

            /* COSTINY */

            a = floatx80_sub(fp0, float32_to_floatx80(

                             make_float32(0x00800000), status),

                             status);

            } else {

                /* SINTINY */

                a = floatx80_move(a, status);

            }

            float_raise(float_flag_inexact, status);



            return a;
@@ -1863,7 +1848,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) 
                           status); /* FP0 IS R = (X-Y1)-Y2 */



    sincont:

        if ((n + adjn) & 1) {

        if ((n + 1) & 1) {

            /* COSPOLY */

            fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */

            fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */
@@ -1876,7 +1861,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) 
            xExp = extractFloatx80Exp(fp0);

            xSig = extractFloatx80Frac(fp0);



            if (((n + adjn) >> 1) & 1) {

            if (((n + 1) >> 1) & 1) {

                xSign ^= 1;

                posneg1 = make_float32(0xBF800000); /* -1 */

            } else {
@@ -1927,7 +1912,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) 
            xExp = extractFloatx80Exp(fp0);

            xSig = extractFloatx80Frac(fp0);



            xSign ^= ((n + adjn) >> 1) & 1; /* X IS NOW R'= SGN*R */

            xSign ^= ((n + 1) >> 1) & 1; /* X IS NOW R'= SGN*R */



            fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */

            fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */