diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index b4fcc2d..f4680b6 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -1215,6 +1215,18 @@ This macro is to set alignment of stack slot to the maximum alignment of all possible modes which the slot may have. @end defmac +@defmac LOCAL_DECL_ALIGNMENT (@var{decl}) +If defined, a C expression to compute the alignment for a local +variable @var{decl}. + +If this macro is not defined, then +@code{LOCAL_ALIGNMENT (TREE_TYPE (@var{decl}), DECL_ALIGN (@var{decl}))} +is used. + +One use of this macro is to increase alignment of medium-size data to +make it all fit in fewer cache lines. +@end defmac + @defmac EMPTY_FIELD_BOUNDARY Alignment in bits to be given to a structure bit-field that follows an empty field such as @code{int : 0;}. |