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stor-layout.c (layout_decl): Do not bump the alignment of a bit-field to more than byte alignment if... 

* stor-layout.c (layout_decl): Do not bump the alignment of a
	bit-field to more than byte alignment if it is packed.

From-SVN: r132614
This commit is contained in:
Eric Botcazou 2008-02-25 09:55:26 +00:00 committed by Eric Botcazou
parent 9dd39a15b8
commit d4cba6d442
2 changed files with 9 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2008-02-25 Eric Botcazou <ebotcazou@adacore.com>
* stor-layout.c (layout_decl): Do not bump the alignment of a
bit-field to more than byte alignment if it is packed.
2008-02-24 David Edelsohn <edelsohn@gnu.org>
* config/rs6000/rs6000.c (processor_costs): Add cache costs for

8
gcc/stor-layout.c
View File

@ -388,13 +388,13 @@ layout_decl (tree decl, unsigned int known_align)
{
enum machine_mode xmode
= mode_for_size_tree (DECL_SIZE (decl), MODE_INT, 1);
unsigned int xalign = GET_MODE_ALIGNMENT (xmode);
if (xmode != BLKmode
&& (known_align == 0
|| known_align >= GET_MODE_ALIGNMENT (xmode)))
&& !(xalign > BITS_PER_UNIT && DECL_PACKED (decl))
&& (known_align == 0 || known_align >= xalign))
{
DECL_ALIGN (decl) = MAX (GET_MODE_ALIGNMENT (xmode),
DECL_ALIGN (decl));
DECL_ALIGN (decl) = MAX (xalign, DECL_ALIGN (decl));
DECL_MODE (decl) = xmode;
DECL_BIT_FIELD (decl) = 0;
}