macOS: Enabled posix_memalign() like on other Unix platforms.

intern/cycles/util/util_aligned_malloc.cpp

@@ -46,13 +46,7 @@ void *util_aligned_malloc(size_t size, int alignment)
   return MEM_mallocN_aligned(size, alignment, "Cycles Aligned Alloc");
 #elif defined(_WIN32)
   return _aligned_malloc(size, alignment);
-#elif defined(__APPLE__)
-  /* On Mac OS X, both the heap and the stack are guaranteed 16-byte aligned so
-   * they work natively with SSE types with no further work.
-   */
-  assert(alignment == 16);
-  return malloc(size);
-#elif defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__)
   void *result;
   if (posix_memalign(&result, alignment, size)) {
     /* Non-zero means allocation error

intern/guardedalloc/intern/mallocn.c

@@ -72,14 +72,7 @@ void *aligned_malloc(size_t size, size_t alignment)
 {
 #ifdef _WIN32
   return _aligned_malloc(size, alignment);
-#elif defined(__APPLE__)
-  /* On Mac OS X, both the heap and the stack are guaranteed 16-byte aligned so
-   * they work natively with SSE types with no further work.
-   */
-  assert(alignment == 16);
-  (void)alignment;
-  return malloc(size);
-#elif defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined (__APPLE__)
   void *result;
 
   if (posix_memalign(&result, alignment, size)) {

intern/libmv/libmv/base/aligned_malloc.cc

@@ -44,12 +44,7 @@ namespace libmv {
 void *aligned_malloc(int size, int alignment) {
 #ifdef _WIN32
   return _aligned_malloc(size, alignment);
-#elif defined(__APPLE__)
-  // On Mac OS X, both the heap and the stack are guaranteed 16-byte aligned so
-  // they work natively with SSE types with no further work.
-  CHECK_EQ(alignment, 16);
-  return malloc(size);
-#elif defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__)
   void *result;
 
   if (posix_memalign(&result, alignment, size)) {