!10353 [ms][lite][cpu] 6x8 matmul avx optimize

From: @lzkcode
Reviewed-by: @zhanghaibo5,@hangangqiang,@zhang_xue_tong
Signed-off-by: @zhang_xue_tong

mindspore/lite/nnacl/x86_64_sse/ConvDwFp32IndirectRow.c

@@ -49,7 +49,7 @@ void ConvDwFp32Avx5x5(float *output, float **input, const float *weights, const
         __m256 in4 = _mm256_loadu_ps(in[k + 3]);
         __m256 w4 = _mm256_loadu_ps(w + 24);
         out1 = _mm256_fmadd_ps(in3, w3, out1);
-        __m256 in5 = _mm256_loadu_ps(in[k + 8]);
+        __m256 in5 = _mm256_loadu_ps(in[k + 4]);
         __m256 w5 = _mm256_loadu_ps(w + 32);
         out1 = _mm256_fmadd_ps(in4, w4, out1);
         w += 40;
@@ -68,7 +68,10 @@ void ConvDwFp32Avx5x5(float *output, float **input, const float *weights, const
         __m256 zero = _mm256_setzero_ps();
         out1 = _mm256_max_ps(out1, zero);
       }
-      if (c == C8NUM) {
+      if (c > C8NUM || c8_mod == 0) {
+        _mm256_storeu_ps(output, out1);
+        output += C8NUM;
+      } else {
         __m128 tmp;
         switch (c8_mod) {
           case 1:
@@ -105,10 +108,7 @@ void ConvDwFp32Avx5x5(float *output, float **input, const float *weights, const
             _mm256_storeu_ps(output, out1);
             break;
         }
-        output += c8_mod == 0 ? C8NUM : c8_mod;
-      } else {
-        _mm256_storeu_ps(output, out1);
-        output += C8NUM;
+        output += c8_mod;
       }
     }
   }