diff --git a/deps/dr/dr_mp3.h b/deps/dr/dr_mp3.h index 1686188747..f4a62ec01a 100644 --- a/deps/dr/dr_mp3.h +++ b/deps/dr/dr_mp3.h @@ -1064,12 +1064,22 @@ static void drmp3_L3_midside_stereo(float *left, int n) int i = 0; float *right = left + 576; #if DRMP3_HAVE_SIMD - if (drmp3_have_simd()) for (; i < n - 3; i += 4) + if (drmp3_have_simd()) { - drmp3_f4 vl = DRMP3_VLD(left + i); - drmp3_f4 vr = DRMP3_VLD(right + i); - DRMP3_VSTORE(left + i, DRMP3_VADD(vl, vr)); - DRMP3_VSTORE(right + i, DRMP3_VSUB(vl, vr)); + for (; i < n - 3; i += 4) + { + drmp3_f4 vl = DRMP3_VLD(left + i); + drmp3_f4 vr = DRMP3_VLD(right + i); + DRMP3_VSTORE(left + i, DRMP3_VADD(vl, vr)); + DRMP3_VSTORE(right + i, DRMP3_VSUB(vl, vr)); + } +#ifdef __GNUC__ + /* Workaround for spurious -Waggressive-loop-optimizations warning from gcc. + * For more info see: https://github.com/lieff/minimp3/issues/88 + */ + if (__builtin_constant_p(n % 4 == 0) && n % 4 == 0) + return; +#endif } #endif for (; i < n; i++)