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re PR middle-end/23290 (Layout changed for structure with single complex field) 

PR middle-end/23290
	* stor-layout.c (compute_record_mode): For records with a single
	field, actually check the field's mode size against the type size.

From-SVN: r104171
This commit is contained in:
J"orn Rennecke 2005-09-12 13:49:56 +00:00 committed by Joern Rennecke
parent cd41bae5fd
commit f439f9a536
2 changed files with 8 additions and 3 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
2005-09-12 J"orn Rennecke <joern.rennecke@st.com>
PR middle-end/23290
* stor-layout.c (compute_record_mode): For records with a single
field, actually check the field's mode size against the type size.
* sh.h (HARD_REGNO_MODE_OK): Allow V4SFmode in general purpose
registers for TARGET_SHMEDIA.
(enum reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Rename

7
gcc/stor-layout.c
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@ -1367,14 +1367,15 @@ compute_record_mode (tree type)
#endif /* MEMBER_TYPE_FORCES_BLK */
}
TYPE_MODE (type) = mode_for_size_tree (TYPE_SIZE (type), MODE_INT, 1);
/* If we only have one real field; use its mode if that mode's size
matches the type's size. This only applies to RECORD_TYPE. This
does not apply to unions. */
if (TREE_CODE (type) == RECORD_TYPE && mode != VOIDmode
&& GET_MODE_SIZE (mode) == GET_MODE_SIZE (TYPE_MODE (type)))
&& host_integerp (TYPE_SIZE (type), 1)
&& GET_MODE_BITSIZE (mode) == TREE_INT_CST_LOW (TYPE_SIZE (type)))
TYPE_MODE (type) = mode;
else
TYPE_MODE (type) = mode_for_size_tree (TYPE_SIZE (type), MODE_INT, 1);
/* If structure's known alignment is less than what the scalar
mode would need, and it matters, then stick with BLKmode. */