Fix tests crash on 2k3000

Forgot to add runtime check here, resulting in crash happend on 2k3000.

Author: jinboson

test/encoder/EncUT_DecodeMbAux.cpp

@@ -253,7 +253,8 @@ TEST (DecodeMbAuxTest, WelsIDctT4Rec_mmi) {
 #endif
 #if defined(HAVE_LASX)
 TEST (DecodeMbAuxTest, WelsIDctT4Rec_lasx) {
-  TestIDctT4Rec<int16_t> (WelsIDctT4Rec_lasx);
+  if (WelsCPUFeatureDetect (0) & WELS_CPU_LASX)
+    TestIDctT4Rec<int16_t> (WelsIDctT4Rec_lasx);
 }
 #endif
 template<typename clip_t>
@@ -428,6 +429,7 @@ TEST (DecodeMbAuxTest, WelsIDctRecI16x16Dc_mmi) {
 #endif
 #if defined(HAVE_LASX)
 TEST (DecodeMbAuxTest, WelsIDctFourT4Rec_lasx) {
-  TestIDctFourT4Rec<int16_t> (WelsIDctFourT4Rec_lasx);
+  if (WelsCPUFeatureDetect (0) & WELS_CPU_LASX)
+    TestIDctFourT4Rec<int16_t> (WelsIDctFourT4Rec_lasx);
 }
 #endif

test/encoder/EncUT_EncoderMbAux.cpp

@@ -294,11 +294,13 @@ TEST (EncodeMbAuxTest, WelsCalculateSingleCtr4x4_mmi) {
 #endif
 #ifdef HAVE_LASX
 TEST (EncodeMbAuxTest, WelsDctT4_lasx) {
-  TestDctT4 (WelsDctT4_lasx);
+  if (WelsCPUFeatureDetect (0) & WELS_CPU_LASX)
+    TestDctT4 (WelsDctT4_lasx);
 }
 
 TEST (EncodeMbAuxTest, WelsDctFourT4_lasx) {
-  TestDctFourT4 (WelsDctFourT4_lasx);
+  if (WelsCPUFeatureDetect (0) & WELS_CPU_LASX)
+    TestDctFourT4 (WelsDctFourT4_lasx);
 }
 #endif