diff options
| author | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 1993-02-08 10:49:05 +0000 |
|---|---|---|
| committer | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 1993-02-08 10:49:05 +0000 |
| commit | de3aac5967439c16fe95210855b37fd7dd0ac17d (patch) | |
| tree | d1532a33d142e36bcb797becc233ccc9cd1b4b2d /gcc/expr.h | |
| parent | 3285790eddfd7178920cfb9cfa6a3f11895364e2 (diff) | |
| download | gcc-de3aac5967439c16fe95210855b37fd7dd0ac17d.tar.gz | |
(MUST_PASS_IN_STACK_BAD_ALIGN): Deleted.
(MUST_PASS_IN_STACK): No problem anymore with nonaligned structs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@3438 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/gcc/expr.h b/gcc/expr.h index 4bcdc17f2b3..cd3658b9812 100644 --- a/gcc/expr.h +++ b/gcc/expr.h @@ -202,19 +202,11 @@ enum direction {none, upward, downward}; /* Value has this type. */ - if the type is marked as addressable (it is required to be constructed into the stack) - if the padding and mode of the type is such that a copy into a register - would put it into the wrong part of the register - - when STRICT_ALIGNMENT and the type is BLKmode and is is not - aligned to a boundary corresponding to what can be loaded into a - register. */ - -#define MUST_PASS_IN_STACK_BAD_ALIGN(MODE,TYPE) \ - (STRICT_ALIGNMENT && MODE == BLKmode \ - && TYPE_ALIGN (TYPE) < (BIGGEST_ALIGNMENT < BITS_PER_WORD \ - ? BIGGEST_ALIGNMENT : BITS_PER_WORD)) - -/* Which padding can't be supported depends on the byte endianness. */ + would put it into the wrong part of the register. + +/* Which padding can't be supported depends on the byte endianness. -/* A value in a register is implicitly padded at the most significant end. + A value in a register is implicitly padded at the most significant end. On a big-endian machine, that is the lower end in memory. So a value padded in memory at the upper end can't go in a register. For a little-endian machine, the reverse is true. */ @@ -231,8 +223,7 @@ enum direction {none, upward, downward}; /* Value has this type. */ || TREE_ADDRESSABLE (TYPE) \ || ((MODE) == BLKmode \ && (FUNCTION_ARG_PADDING (MODE, TYPE) \ - == MUST_PASS_IN_STACK_BAD_PADDING)) \ - || MUST_PASS_IN_STACK_BAD_ALIGN (MODE, TYPE))) + == MUST_PASS_IN_STACK_BAD_PADDING)))) /* Nonzero if type TYPE should be returned in memory (even though its mode is not BLKmode). |