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stor-layout.c (compute_record_mode): Remove very obsolete test that forces BLKmode for records with fields crossing... 

* stor-layout.c (compute_record_mode): Remove very obsolete test
	that forces BLKmode for records with fields crossing word boundary.

From-SVN: r69297
This commit is contained in:
Richard Kenner 2003-07-13 17:12:28 +00:00 committed by Richard Kenner
parent ae26c8e25f
commit 0acf4f8857
2 changed files with 5 additions and 15 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-07-13 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* stor-layout.c (compute_record_mode): Remove very obsolete test
that forces BLKmode for records with fields crossing word boundary.
2003-07-13 Zack Weinberg <zack@codesourcery.com>
* Makefile.in: Remove orphan reference to acconfig.h.

15
gcc/stor-layout.c
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@ -1310,8 +1310,6 @@ compute_record_mode (tree type)
BLKmode only because it isn't aligned. */
for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
{
unsigned HOST_WIDE_INT bitpos;
if (TREE_CODE (field) != FIELD_DECL)
continue;
@ -1323,19 +1321,6 @@ compute_record_mode (tree type)
|| ! host_integerp (DECL_SIZE (field), 1))
return;
bitpos = int_bit_position (field);
/* Must be BLKmode if any field crosses a word boundary,
since extract_bit_field can't handle that in registers. */
if (bitpos / BITS_PER_WORD
!= ((tree_low_cst (DECL_SIZE (field), 1) + bitpos - 1)
/ BITS_PER_WORD)
/* But there is no problem if the field is entire words
or bigger than a word. */
&& ! (tree_low_cst (DECL_SIZE (field), 1) % BITS_PER_WORD == 0
|| compare_tree_int (DECL_SIZE (field), BITS_PER_WORD) > 0))
return;
/* If this field is the whole struct, remember its mode so
that, say, we can put a double in a class into a DF
register instead of forcing it to live in the stack. */