diff options
Diffstat (limited to 'llvm/include')
| -rw-r--r-- | llvm/include/llvm/Support/Compiler.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/llvm/include/llvm/Support/Compiler.h b/llvm/include/llvm/Support/Compiler.h index f744237e583..99a02f7ada0 100644 --- a/llvm/include/llvm/Support/Compiler.h +++ b/llvm/include/llvm/Support/Compiler.h @@ -293,6 +293,34 @@ # define LLVM_ALIGNAS(x) alignas(x) #endif +/// \macro LLVM_PACKED +/// \brief Used to specify a packed structure. +/// LLVM_PACKED( +/// struct A { +/// int i; +/// int j; +/// int k; +/// long long l; +/// }); +/// +/// LLVM_PACKED_START +/// struct B { +/// int i; +/// int j; +/// int k; +/// long long l; +/// }; +/// LLVM_PACKED_END +#ifdef _MSC_VER +# define LLVM_PACKED(d) __pragma(pack(push, 1)) d __pragma(pack(pop)) +# define LLVM_PACKED_START __pragma(pack(push, 1)) +# define LLVM_PACKED_END __pragma(pack(pop)) +#else +# define LLVM_PACKED(d) d __attribute__((packed)) +# define LLVM_PACKED_START _Pragma("pack(push, 1)") +# define LLVM_PACKED_END _Pragma("pack(pop)") +#endif + /// \macro LLVM_PTR_SIZE /// \brief A constant integer equivalent to the value of sizeof(void*). /// Generally used in combination with LLVM_ALIGNAS or when doing computation in |
