dilithium/fips202x4: align _mm_storel_pd result using double on stack

crypto_sign/dilithium2/avx2/fips202x4.c

@@ -91,17 +91,22 @@ static void keccakx4_squeezeblocks(uint8_t *out0,
                                    unsigned int r,
                                    __m256i s[25]) {
     unsigned int i;
+    double temp0, temp1;
     __m128d t;
 
     while (nblocks > 0) {
         PQCLEAN_DILITHIUM2_AVX2_f1600x4(s, KeccakF_RoundConstants);
         for (i = 0; i < r / 8; ++i) {
             t = _mm_castsi128_pd(_mm256_castsi256_si128(s[i]));
-            _mm_storel_pd((double *)&out0[8 * i], t);
-            _mm_storeh_pd((double *)&out1[8 * i], t);
+            _mm_storel_pd(&temp0, t);
+            _mm_storeh_pd(&temp1, t);
+            memmove(&out0[8 * i], &temp0, sizeof(double));
+            memmove(&out1[8 * i], &temp1, sizeof(double));
             t = _mm_castsi128_pd(_mm256_extracti128_si256(s[i], 1));
-            _mm_storel_pd((double *)&out2[8 * i], t);
-            _mm_storeh_pd((double *)&out3[8 * i], t);
+            _mm_storel_pd(&temp0, t);
+            _mm_storeh_pd(&temp1, t);
+            memmove(&out2[8 * i], &temp0, sizeof(double));
+            memmove(&out3[8 * i], &temp1, sizeof(double));
         }
 
         out0 += r;

crypto_sign/dilithium3/avx2/fips202x4.c

@@ -91,17 +91,22 @@ static void keccakx4_squeezeblocks(uint8_t *out0,
                                    unsigned int r,
                                    __m256i s[25]) {
     unsigned int i;
+    double temp0, temp1;
     __m128d t;
 
     while (nblocks > 0) {
         PQCLEAN_DILITHIUM3_AVX2_f1600x4(s, KeccakF_RoundConstants);
         for (i = 0; i < r / 8; ++i) {
             t = _mm_castsi128_pd(_mm256_castsi256_si128(s[i]));
-            _mm_storel_pd((double *)&out0[8 * i], t);
-            _mm_storeh_pd((double *)&out1[8 * i], t);
+            _mm_storel_pd(&temp0, t);
+            _mm_storeh_pd(&temp1, t);
+            memmove(&out0[8 * i], &temp0, sizeof(double));
+            memmove(&out1[8 * i], &temp1, sizeof(double));
             t = _mm_castsi128_pd(_mm256_extracti128_si256(s[i], 1));
-            _mm_storel_pd((double *)&out2[8 * i], t);
-            _mm_storeh_pd((double *)&out3[8 * i], t);
+            _mm_storel_pd(&temp0, t);
+            _mm_storeh_pd(&temp1, t);
+            memmove(&out2[8 * i], &temp0, sizeof(double));
+            memmove(&out3[8 * i], &temp1, sizeof(double));
         }
 
         out0 += r;

crypto_sign/dilithium5/avx2/fips202x4.c

@@ -91,17 +91,22 @@ static void keccakx4_squeezeblocks(uint8_t *out0,
                                    unsigned int r,
                                    __m256i s[25]) {
     unsigned int i;
+    double temp0, temp1;
     __m128d t;
 
     while (nblocks > 0) {
         PQCLEAN_DILITHIUM5_AVX2_f1600x4(s, KeccakF_RoundConstants);
         for (i = 0; i < r / 8; ++i) {
             t = _mm_castsi128_pd(_mm256_castsi256_si128(s[i]));
-            _mm_storel_pd((double *)&out0[8 * i], t);
-            _mm_storeh_pd((double *)&out1[8 * i], t);
+            _mm_storel_pd(&temp0, t);
+            _mm_storeh_pd(&temp1, t);
+            memmove(&out0[8 * i], &temp0, sizeof(double));
+            memmove(&out1[8 * i], &temp1, sizeof(double));
             t = _mm_castsi128_pd(_mm256_extracti128_si256(s[i], 1));
-            _mm_storel_pd((double *)&out2[8 * i], t);
-            _mm_storeh_pd((double *)&out3[8 * i], t);
+            _mm_storel_pd(&temp0, t);
+            _mm_storeh_pd(&temp1, t);
+            memmove(&out2[8 * i], &temp0, sizeof(double));
+            memmove(&out3[8 * i], &temp1, sizeof(double));
         }
 
         out0 += r;