diff options
Diffstat (limited to 'indra/llmath/tests')
| -rwxr-xr-x | indra/llmath/tests/alignment_test.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/indra/llmath/tests/alignment_test.cpp b/indra/llmath/tests/alignment_test.cpp new file mode 100755 index 0000000000..6b4a454fd2 --- /dev/null +++ b/indra/llmath/tests/alignment_test.cpp @@ -0,0 +1,127 @@ +/**
+ * @file v3dmath_test.cpp
+ * @author Vir
+ * @date 2011-12
+ * @brief v3dmath test cases.
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+// Tests related to allocating objects with alignment constraints, particularly for SSE support.
+
+#include "linden_common.h"
+#include "../test/lltut.h"
+#include "../llmath.h"
+#include "../llsimdmath.h"
+#include "../llvector4a.h"
+
+namespace tut
+{
+
+#define is_aligned(ptr,alignment) ((reinterpret_cast<uintptr_t>(ptr))%(alignment)==0)
+
+struct alignment_test {};
+
+typedef test_group<alignment_test> alignment_test_t;
+typedef alignment_test_t::object alignment_test_object_t;
+tut::alignment_test_t tut_alignment_test("LLAlignment");
+
+LL_ALIGN_PREFIX(16)
+class MyVector4a
+{
+ LLQuad mQ;
+} LL_ALIGN_POSTFIX(16);
+
+LL_ALIGN_PREFIX(64)
+class MyBigBlob
+{
+public:
+ ~MyBigBlob() {}
+private:
+ LLQuad mQ[4];
+} LL_ALIGN_POSTFIX(64);
+
+// In-place allocation of objects and arrays.
+template<> template<>
+void alignment_test_object_t::test<1>()
+{
+ ensure("LLAlignment reality is broken: ", (1==1));
+
+ MyVector4a vec1;
+ ensure("LLAlignment vec1 unaligned", is_aligned(&vec1,16));
+
+ MyBigBlob bb1;
+ ensure("LLAlignment bb1 unaligned", is_aligned(&bb1,64));
+
+
+ MyVector4a veca[12];
+ ensure("LLAlignment veca unaligned", is_aligned(veca,16));
+
+ MyBigBlob bba[12];
+ ensure("LLAlignment bba unaligned", is_aligned(bba,64));
+}
+
+// Heap allocation of objects and arrays.
+template<> template<>
+void alignment_test_object_t::test<2>()
+{
+ const int ARR_SIZE = 7;
+ for(int i=0; i<ARR_SIZE; i++)
+ {
+ MyVector4a *vecp = new MyVector4a;
+ ensure("LLAlignment vecp unaligned", is_aligned(vecp,16));
+ delete vecp;
+ }
+
+ MyVector4a *veca = new MyVector4a[ARR_SIZE];
+ for(int i=0; i<ARR_SIZE; i++)
+ {
+ ensure("LLAlignment veca unaligned", is_aligned(&veca[i],16));
+ }
+
+ for(int i=0; i<ARR_SIZE; i++)
+ {
+ void *aligned_addr = _aligned_malloc(sizeof(MyBigBlob),64);
+ MyBigBlob *bbp = new(aligned_addr) MyBigBlob;
+ ensure("LLAlignment bbp unaligned", is_aligned(bbp,64));
+ bbp->~MyBigBlob();
+ _aligned_free(aligned_addr);
+ }
+
+ ensure("LLAlignment big blob size",sizeof(MyBigBlob)==64);
+ void *aligned_addr = _aligned_malloc(ARR_SIZE*sizeof(MyBigBlob),64);
+ MyBigBlob *bba = new(aligned_addr) MyBigBlob[ARR_SIZE];
+ std::cout << "aligned_addr " << aligned_addr << std::endl;
+ std::cout << "bba " << bba << std::endl;
+ for(int i=0; i<ARR_SIZE; i++)
+ {
+ std::cout << "bba test " << i << std::endl;
+ ensure("LLAlignment bba unaligned", is_aligned(&bba[i],64));
+ }
+ for(int i=0; i<ARR_SIZE; i++)
+ {
+ bba[i].~MyBigBlob();
+ }
+ _aligned_free(aligned_addr);
+}
+
+}
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