================
@@ -10000,3 +9983,46 @@ different languages to coexist on the same call stack
while each interpreting
exceptions according to their own rules.
}];
}
+
+def AlignedDocs : Documentation {
+ let Category = DocCatDecl;
+ let Heading = "aligned";
+ let Content = [{
+The ``aligned`` attribute specifies a minimum alignment (in bytes) for a
+variable, structure field, or type definition. The attribute takes an
+optional non-negative integral constant expression. If the value is a
+power of two, the compiler ensures the declaration is aligned to at least
+that boundary; a value of zero has no effect.
+
+.. code-block:: c++
+
+ struct __attribute__((aligned(8))) S {
+ short f[3];
+ };
+
+If the alignment factor is omitted, the compiler defaults to the largest(the
most strict)
+alignment supported by the target machine for any data type.
+
+Applying this attribute to a structure or union changes the type's layout
+properties. To ensure that array indexing and pointer arithmetic remain
+consistent, the compiler automatically increases the structure's total size
+(via tail padding) to a multiple of the alignment value. For example, a
+struct with a natural size of 6 bytes marked ``aligned(8)`` will be
+padded to 8 bytes.
----------------
Ko496-glitch wrote:
thanks, i have added this
https://github.com/llvm/llvm-project/pull/195278
_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
