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[support] Add a macro wrapper for alignas and simplify some code.

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We wrap __attribute((aligned)) for GCC 4.7 and __declspec(align) for
MSVC. The latter behaves weird in some contexts so this should be used
carefully.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233910 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2015-04-02 11:32:48 +00:00
parent 3fabd02ea5
commit efdcf3d62d
3 changed files with 19 additions and 46 deletions
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22
unittests/Support/AlignOfTest.cpp
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@@ -39,24 +39,10 @@ namespace {
#endif
// Define some fixed alignment types to use in these tests.
#if __has_feature(cxx_alignas)
struct alignas(1) A1 { };
struct alignas(2) A2 { };
struct alignas(4) A4 { };
struct alignas(8) A8 { };
#elif defined(__GNUC__)
struct A1 { } __attribute__((aligned(1)));
struct A2 { } __attribute__((aligned(2)));
struct A4 { } __attribute__((aligned(4)));
struct A8 { } __attribute__((aligned(8)));
#elif defined(_MSC_VER)
__declspec(align(1)) struct A1 { };
__declspec(align(2)) struct A2 { };
__declspec(align(4)) struct A4 { };
__declspec(align(8)) struct A8 { };
#else
# error No supported align as directive.
#endif
struct LLVM_ALIGNAS(1) A1 {};
struct LLVM_ALIGNAS(2) A2 {};
struct LLVM_ALIGNAS(4) A4 {};
struct LLVM_ALIGNAS(8) A8 {};
struct S1 {};
struct S2 { char a; };