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Ensure simd types are aligned to what we assume

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Turns out Clang is sensitive to the location of the alignment attribute.
This commit is contained in:
Matthew Barr 2017-04-07 16:40:11 +10:00
parent c0d7960954
commit 0b8f25a036
2 changed files with 9 additions and 1 deletions
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2
src/util/simd_types.h
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@ -43,7 +43,7 @@ typedef struct ALIGN_DIRECTIVE {u64a hi; u64a lo;} m128;
#if defined(HAVE_AVX2)
typedef __m256i m256;
#else
typedef ALIGN_AVX_DIRECTIVE struct {m128 lo; m128 hi;} m256;
typedef struct ALIGN_AVX_DIRECTIVE {m128 lo; m128 hi;} m256;
#endif
// these should align to 16 and 32 respectively

8
unit/internal/simd_utils.cpp
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@ -542,6 +542,7 @@ TYPED_TEST(SimdUtilsTest, load_store) {
auto mem_ptr = make_bytecode_ptr<char>(sizeof(a), alignof(TypeParam));
char *mem = mem_ptr.get();
ASSERT_EQ(0, (size_t)mem % 16U);
memset(mem, 0, sizeof(a));
@ -585,6 +586,13 @@ TYPED_TEST(SimdUtilsTest, loadbytes_storebytes) {
}
}
TEST(SimdUtilsTest, alignment) {
ASSERT_EQ(16, alignof(m128));
ASSERT_EQ(32, alignof(m256));
ASSERT_EQ(16, alignof(m384));
ASSERT_EQ(32, alignof(m512));
}
TEST(SimdUtilsTest, movq) {
m128 simd;