Align memory allocation for SIMD operations

Change-Id: I035d4a3b14e6c56a55b06dea57b4a49cd161e69f

test/selfguided_filter_test.cc

diff --git a/test/selfguided_filter_test.cc b/test/selfguided_filter_test.cc
index 397519a..6e4f5d8 100644
--- a/test/selfguided_filter_test.cc
+++ b/test/selfguided_filter_test.cc
@@ -46,7 +46,7 @@
 
     uint8_t *input = new uint8_t[w * h];
     uint8_t *output = new uint8_t[w * h];
-    int32_t *tmpbuf = (int32_t *)aom_malloc(RESTORATION_TMPBUF_SIZE);
+    int32_t *tmpbuf = (int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE);
     memset(tmpbuf, 0, RESTORATION_TMPBUF_SIZE);
 
     ACMRandom rnd(ACMRandom::DeterministicSeed());
@@ -92,7 +92,7 @@
     uint8_t *input = new uint8_t[stride * max_h];
     uint8_t *output = new uint8_t[out_stride * max_h];
     uint8_t *output2 = new uint8_t[out_stride * max_h];
-    int32_t *tmpbuf = (int32_t *)aom_malloc(RESTORATION_TMPBUF_SIZE);
+    int32_t *tmpbuf = (int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE);
     memset(tmpbuf, 0, RESTORATION_TMPBUF_SIZE);
 
     ACMRandom rnd(ACMRandom::DeterministicSeed());
@@ -163,7 +163,7 @@
 
     uint16_t *input = new uint16_t[w * h];
     uint16_t *output = new uint16_t[w * h];
-    int32_t *tmpbuf = (int32_t *)aom_malloc(RESTORATION_TMPBUF_SIZE);
+    int32_t *tmpbuf = (int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE);
     memset(tmpbuf, 0, RESTORATION_TMPBUF_SIZE);
 
     ACMRandom rnd(ACMRandom::DeterministicSeed());
@@ -212,7 +212,7 @@
     uint16_t *input = new uint16_t[stride * max_h];
     uint16_t *output = new uint16_t[out_stride * max_h];
     uint16_t *output2 = new uint16_t[out_stride * max_h];
-    int32_t *tmpbuf = (int32_t *)aom_malloc(RESTORATION_TMPBUF_SIZE);
+    int32_t *tmpbuf = (int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE);
     memset(tmpbuf, 0, RESTORATION_TMPBUF_SIZE);
 
     ACMRandom rnd(ACMRandom::DeterministicSeed());