Summary: The minimum compilers support all have alignas, and we don't use LLVM_ALIGNAS anywhere anymore. This also removes an MSVC diagnostic which, according to the comment above, isn't relevant anymore.
Reviewers: rnk
Subscribers: mgorny, jkorous, dexonsmith, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D65458
llvm-svn: 367383
# recursively expanded use the := operator instead of the = operator.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
-PREDEFINED = LLVM_ALIGNAS(x)=
+PREDEFINED =
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
# recursively expanded use the := operator instead of the = operator.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
-PREDEFINED = LLVM_ALIGNAS(x)=
+PREDEFINED =
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
# is fixed.
-wd4709 # Suppress comma operator within array index expression
- # Ideally, we'd like this warning to be enabled, but MSVC 2013 doesn't
- # support the 'aligned' attribute in the way that clang sources requires (for
- # any code that uses the LLVM_ALIGNAS macro), so this is must be disabled to
- # avoid unwanted alignment warnings.
- # When we switch to requiring a version of MSVC that supports the 'alignas'
- # specifier (MSVC 2015?) this warning can be re-enabled.
- -wd4324 # Suppress 'structure was padded due to __declspec(align())'
-
# Promoted warnings.
-w14062 # Promote 'enumerator in switch of enum is not handled' to level 1 warning.
# recursively expanded use the := operator instead of the = operator.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
-PREDEFINED = LLVM_ALIGNAS(x)=
+PREDEFINED =
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
# define LLVM_ASSUME_ALIGNED(p, a) (p)
#endif
-/// \macro LLVM_ALIGNAS
-/// Used to specify a minimum alignment for a structure or variable.
-#if __GNUC__ && !__has_feature(cxx_alignas) && !LLVM_GNUC_PREREQ(4, 8, 1)
-# define LLVM_ALIGNAS(x) __attribute__((aligned(x)))
-#else
-# define LLVM_ALIGNAS(x) alignas(x)
-#endif
-
/// \macro LLVM_PACKED
/// Used to specify a packed structure.
/// LLVM_PACKED(
/// \macro LLVM_PTR_SIZE
/// A constant integer equivalent to the value of sizeof(void*).
-/// Generally used in combination with LLVM_ALIGNAS or when doing computation in
-/// the preprocessor.
+/// Generally used in combination with alignas or when doing computation in the
+/// preprocessor.
#ifdef __SIZEOF_POINTER__
# define LLVM_PTR_SIZE __SIZEOF_POINTER__
#elif defined(_WIN64)
#endif
// Define some fixed alignment types to use in these tests.
-struct LLVM_ALIGNAS(1) A1 {};
-struct LLVM_ALIGNAS(2) A2 {};
-struct LLVM_ALIGNAS(4) A4 {};
-struct LLVM_ALIGNAS(8) A8 {};
+struct alignas(1) A1 {};
+struct alignas(2) A2 {};
+struct alignas(4) A4 {};
+struct alignas(8) A8 {};
struct S1 {};
struct S2 { char a; };