6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-03 15:26:18 +00:00
Code Issues Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

14
include/llvm/Support/Compiler.h
View File

@@ -281,6 +281,20 @@
# define LLVM_ASSUME_ALIGNED(p, a) (p)
#endif
/// \macro LLVM_ALIGNAS
/// \brief Used to specify a minimum alignment for a structure or variable. The
/// alignment must be a constant integer.
///
/// Note that __declspec(align) has special quirks, it's not legal to pass a
/// structure with __declspec(align) as a formal parameter.
#ifdef _MSC_VER
# define LLVM_ALIGNAS(x) __declspec(align(x))
#elif __GNUC__ && !__has_feature(cxx_alignas) && !LLVM_GNUC_PREREQ(4, 8, 0)
# define LLVM_ALIGNAS(x) __attribute__((aligned(x)))
#else
# define LLVM_ALIGNAS(x) alignas(x)
#endif
/// \macro LLVM_FUNCTION_NAME
/// \brief Expands to __func__ on compilers which support it. Otherwise,
/// expands to a compiler-dependent replacement.