diff options
Diffstat (limited to 'gcc/config/rs6000/darwin.h')
| -rw-r--r-- | gcc/config/rs6000/darwin.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/config/rs6000/darwin.h b/gcc/config/rs6000/darwin.h index aef5d722e82..0ae4923600b 100644 --- a/gcc/config/rs6000/darwin.h +++ b/gcc/config/rs6000/darwin.h @@ -173,3 +173,21 @@ Boston, MA 02111-1307, USA. */ /* Fix for emit_group_load (): force large constants to be pushed via regs. */ #define ALWAYS_PUSH_CONSTS_USING_REGS_P 1 + +/* Darwin word-aligns FP doubles but doubleword-aligns 64-bit ints. */ +#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ + (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \ + ? get_inner_array_type (FIELD) \ + : TREE_TYPE (FIELD)) == DFmode \ + ? MIN ((COMPUTED), 32) : (COMPUTED)) + +/* Darwin increases natural record alignment to doubleword if the first + field is an FP double while the FP fields remain word aligned. */ +#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ + ((TREE_CODE (STRUCT) == RECORD_TYPE \ + || TREE_CODE (STRUCT) == UNION_TYPE \ + || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ + && TYPE_FIELDS (STRUCT) != 0 \ + && DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode \ + ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \ + : MAX ((COMPUTED), (SPECIFIED))) |