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| author | Steve Ellcey <sje@cup.hp.com> | 2001-12-11 23:04:36 +0000 |
|---|---|---|
| committer | Janis Johnson <janis@gcc.gnu.org> | 2001-12-11 23:04:36 +0000 |
| commit | 0d7839daeef826108df3788cc82c198df2e56b2d (patch) | |
| tree | 204c988a001cb54478276500f93ea95df61d9865 /gcc/stor-layout.c | |
| parent | 81deb0a3e6fc4528d84b11356a470c4054b171a1 (diff) | |
| download | gcc-0d7839daeef826108df3788cc82c198df2e56b2d.zip gcc-0d7839daeef826108df3788cc82c198df2e56b2d.tar.gz gcc-0d7839daeef826108df3788cc82c198df2e56b2d.tar.bz2 | |
tm.texi (FUNCTION_ARG_REG_LITTLE_ENDIAN): New.
2001-12-11 Steve Ellcey <sje@cup.hp.com>
* doc/tm.texi (FUNCTION_ARG_REG_LITTLE_ENDIAN): New.
* defaults.h (FUNCTION_ARG_REG_LITTLE_ENDIAN): New.
* calls.c (store_unaligned_arguments_into_pseudos): Check
FUNCTION_ARG_REG_LITTLE_ENDIAN to see how structures
are passed/returned.
* expr.c (move_block_from_reg): Ditto.
(move_block_from_reg): Ditto.
(copy_blkmode_from_reg): Ditto.
* stmt.c (expand_return): Ditto.
* stor-layout.c (compute_record_mode): If
FUNCTION_ARG_REG_LITTLE_ENDIAN is set then check
MEMBER_TYPE_FORCES_BLK even if mode == VOIDmode.
* config/ia64/hpux.h (MEMBER_TYPE_FORCES_BLK): Set to true
so that Structures of one field are still treated as structures.
(FUNCTION_ARG_REG_LITTLE_ENDIAN): New, set it to true.
(FUNCTION_ARG_PADDING): Set to ia64_hpux_function_arg_padding().
(PAD_VARARGS_DOWN): Modify from default to not pad structures down.
* config/ia64/ia64-protos.h (ia64_hpux_function_arg_padding): New.
* config/ia64/ia64.c (ia64_hpux_function_arg_padding): New function
to special case handling of structure padding.
From-SVN: r47904
Diffstat (limited to 'gcc/stor-layout.c')
| -rw-r--r-- | gcc/stor-layout.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index 05eaf24..f657463 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -1149,7 +1149,17 @@ compute_record_mode (type) #ifdef MEMBER_TYPE_FORCES_BLK /* With some targets, eg. c4x, it is sub-optimal to access an aligned BLKmode structure as a scalar. */ - if (mode == VOIDmode && MEMBER_TYPE_FORCES_BLK (field)) + + /* On ia64-*-hpux we need to ensure that we don't change the + mode of a structure containing a single field or else we + will pass it incorrectly. Since a structure with a single + field causes mode to get set above we can't allow the + check for mode == VOIDmode in this case. Perhaps + MEMBER_TYPE_FORCES_BLK should be extended to include mode + as an argument and the check could be put in there for c4x. */ + + if ((mode == VOIDmode || FUNCTION_ARG_REG_LITTLE_ENDIAN) + && MEMBER_TYPE_FORCES_BLK (field)) return; #endif /* MEMBER_TYPE_FORCES_BLK */ } |