Merge pull request #14605 from terfendail:wsignmask_fixavx

modules/core/include/opencv2/core/hal/intrin_avx.hpp

@@ -1227,18 +1227,14 @@ inline int v_signmask(const v_uint8x32& a)
 { return v_signmask(v_reinterpret_as_s8(a)); }
 
 inline int v_signmask(const v_int16x16& a)
-{
-    v_int8x32 v = v_int8x32(_mm256_packs_epi16(a.val, a.val));
-    return v_signmask(v) & 255;
-}
+{ return v_signmask(v_pack(a, a)) & 0xFFFF; }
 inline int v_signmask(const v_uint16x16& a)
 { return v_signmask(v_reinterpret_as_s16(a)); }
 
 inline int v_signmask(const v_int32x8& a)
 {
-    __m256i a16 = _mm256_packs_epi32(a.val, a.val);
-    v_int8x32 v = v_int8x32(_mm256_packs_epi16(a16, a16));
-    return v_signmask(v) & 15;
+    v_int16x16 a16 = v_pack(a, a);
+    return v_signmask(v_pack(a16, a16)) & 0xFF;
 }
 inline int v_signmask(const v_uint32x8& a)
 { return v_signmask(v_reinterpret_as_s32(a)); }

modules/core/test/test_intrin_utils.hpp

@@ -32,8 +32,7 @@ template <> struct initializer<64>
         return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15],
         d[16], d[17], d[18], d[19], d[20], d[21], d[22], d[23], d[24], d[25], d[26], d[27], d[28], d[29], d[30], d[31],
         d[32], d[33], d[34], d[35], d[36], d[37], d[38], d[39], d[40], d[41], d[42], d[43], d[44], d[45], d[46], d[47],
-        d[48], d[49], d[50], d[51], d[52], d[53], d[54], d[55], d[56], d[57], d[58], d[59], d[50], d[51], d[52], d[53],
-        d[54], d[55], d[56], d[57], d[58], d[59], d[60], d[61], d[62], d[63]);
+        d[48], d[49], d[50], d[51], d[52], d[53], d[54], d[55], d[56], d[57], d[58], d[59], d[60], d[61], d[62], d[63]);
     }
 };
 
@@ -660,7 +659,7 @@ template<typename R> struct TheTest
         {
             SCOPED_TRACE(cv::format("i=%d", i));
             EXPECT_COMPARE_EQ((float)std::sqrt(dataA[i]), (float)resB[i]);
-            EXPECT_COMPARE_EQ(1/(float)std::sqrt(dataA[i]), (float)resC[i]);
+            EXPECT_COMPARE_EQ((float)(1/std::sqrt(dataA[i])), (float)resC[i]);
             EXPECT_COMPARE_EQ((float)abs(dataA[i]), (float)resE[i]);
         }
 
@@ -808,8 +807,8 @@ template<typename R> struct TheTest
         dataC *= (LaneType)-1;
         R a = dataA, b = dataB, c = dataC, d = dataD, e = dataE;
 
-        int m = v_signmask(a);
-        EXPECT_EQ(2, m);
+        EXPECT_EQ(2, v_signmask(a));
+        EXPECT_EQ(2 | (1 << (R::nlanes / 2)) | (1 << (R::nlanes - 1)), v_signmask(b));
 
         EXPECT_EQ(false, v_check_all(a));
         EXPECT_EQ(false, v_check_all(b));