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[Support] Fix AlignOf test on i386-linux. 

On i386 alignof(double) = 8 is not the same as alignof(struct { double
}) = 4. This used to be not an issue because the old implementation
always measured alignment inside of structs. Wrap a dummy struct around
the test to avoid this issue.

llvm-svn: 284812
This commit is contained in:
Benjamin Kramer 2016-10-21 09:15:57 +00:00
parent 41189656ed
commit aa48572b9d
1 changed files with 15 additions and 12 deletions
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27
llvm/unittests/Support/AlignOfTest.cpp
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@ -89,6 +89,8 @@ V6::~V6() {}
V7::~V7() {}
V8::~V8() {}
template <typename M> struct T { M m; };
TEST(AlignOfTest, BasicAlignedArray) {
EXPECT_LE(1u, alignof(AlignedCharArrayUnion<A1>));
EXPECT_LE(2u, alignof(AlignedCharArrayUnion<A2>));
@ -124,19 +126,20 @@ TEST(AlignOfTest, BasicAlignedArray) {
// For other tests we simply assert that the alignment of the union mathes
// that of the fundamental type and hope that we have any weird type
// productions that would trigger bugs.
EXPECT_EQ(alignof(char), alignof(AlignedCharArrayUnion<char>));
EXPECT_EQ(alignof(short), alignof(AlignedCharArrayUnion<short>));
EXPECT_EQ(alignof(int), alignof(AlignedCharArrayUnion<int>));
EXPECT_EQ(alignof(long), alignof(AlignedCharArrayUnion<long>));
EXPECT_EQ(alignof(long long), alignof(AlignedCharArrayUnion<long long>));
EXPECT_EQ(alignof(float), alignof(AlignedCharArrayUnion<float>));
EXPECT_EQ(alignof(double), alignof(AlignedCharArrayUnion<double>));
EXPECT_EQ(alignof(long double), alignof(AlignedCharArrayUnion<long double>));
EXPECT_EQ(alignof(void *), alignof(AlignedCharArrayUnion<void *>));
EXPECT_EQ(alignof(int *), alignof(AlignedCharArrayUnion<int *>));
EXPECT_EQ(alignof(double (*)(double)),
EXPECT_EQ(alignof(T<char>), alignof(AlignedCharArrayUnion<char>));
EXPECT_EQ(alignof(T<short>), alignof(AlignedCharArrayUnion<short>));
EXPECT_EQ(alignof(T<int>), alignof(AlignedCharArrayUnion<int>));
EXPECT_EQ(alignof(T<long>), alignof(AlignedCharArrayUnion<long>));
EXPECT_EQ(alignof(T<long long>), alignof(AlignedCharArrayUnion<long long>));
EXPECT_EQ(alignof(T<float>), alignof(AlignedCharArrayUnion<float>));
EXPECT_EQ(alignof(T<double>), alignof(AlignedCharArrayUnion<double>));
EXPECT_EQ(alignof(T<long double>),
alignof(AlignedCharArrayUnion<long double>));
EXPECT_EQ(alignof(T<void *>), alignof(AlignedCharArrayUnion<void *>));
EXPECT_EQ(alignof(T<int *>), alignof(AlignedCharArrayUnion<int *>));
EXPECT_EQ(alignof(T<double (*)(double)>),
alignof(AlignedCharArrayUnion<double (*)(double)>));
EXPECT_EQ(alignof(double (S6::*)()),
EXPECT_EQ(alignof(T<double (S6::*)()>),
alignof(AlignedCharArrayUnion<double (S6::*)()>));
EXPECT_EQ(alignof(S1), alignof(AlignedCharArrayUnion<S1>));
EXPECT_EQ(alignof(S2), alignof(AlignedCharArrayUnion<S2>));