diff options
Diffstat (limited to 'gcc/config/rs6000/darwin.h')
| -rw-r--r-- | gcc/config/rs6000/darwin.h | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/gcc/config/rs6000/darwin.h b/gcc/config/rs6000/darwin.h index 374f0014e13..b8cbdcc2dd1 100644 --- a/gcc/config/rs6000/darwin.h +++ b/gcc/config/rs6000/darwin.h @@ -374,26 +374,28 @@ do { \ /* Fix for emit_group_load (): force large constants to be pushed via regs. */ #define ALWAYS_PUSH_CONSTS_USING_REGS_P 1 -/* This now supports a natural alignment mode */ -/* Darwin word-aligns FP doubles but doubleword-aligns 64-bit ints. */ -#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ - (TARGET_ALIGN_NATURAL ? (COMPUTED) : \ - (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \ - ? get_inner_array_type (FIELD) \ - : TREE_TYPE (FIELD)) == DFmode \ - ? MIN ((COMPUTED), 32) : (COMPUTED))) +/* Compute field alignment. This is similar to the version of the + macro in the Apple version of GCC, except that version supports + 'mac68k' alignment, and that version uses the computed alignment + always for the first field of a structure. The first-field + behaviour is dealt with by + darwin_rs6000_special_round_type_align. */ +#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ + (TARGET_ALIGN_NATURAL ? (COMPUTED) \ + : (COMPUTED) == 128 ? 128 \ + : MIN ((COMPUTED), 32)) /* 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) \ - && TARGET_ALIGN_NATURAL == 0 \ - ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ - : (TREE_CODE (STRUCT) == VECTOR_TYPE \ - && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT))) \ - ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \ +#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ + ((TREE_CODE (STRUCT) == RECORD_TYPE \ + || TREE_CODE (STRUCT) == UNION_TYPE \ + || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ + && TARGET_ALIGN_NATURAL == 0 \ + ? darwin_rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ + : (TREE_CODE (STRUCT) == VECTOR_TYPE \ + && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT))) \ + ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \ : MAX ((COMPUTED), (SPECIFIED))) /* Specify padding for the last element of a block move between |