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expr.c (store_field): Force usage of bitfield instructions when the field position requires it... 

* expr.c (store_field): Force usage of bitfield instructions when
        the field position requires it, whatever SLOW_UNALIGNED_ACCESS.
        (expand_expr, case BIT_FIELD_REF): likewise.

From-SVN: r65701
This commit is contained in:
Olivier Hainque 2003-04-16 23:30:35 +02:00 committed by Richard Kenner
parent f2d80e7e81
commit 15b19a7dbf
2 changed files with 11 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2003-04-16 Olivier Hainque <hainque@act-europe.fr>
* expr.c (store_field): Force usage of bitfield instructions when
the field position requires it, whatever SLOW_UNALIGNED_ACCESS.
(expand_expr, case BIT_FIELD_REF): likewise.
2003-04-16 Mark Mitchell <mark@codesourcery.com>
PR middle-end/8866

10
gcc/expr.c
View File

@ -5564,8 +5564,9 @@ store_field (target, bitsize, bitpos, mode, exp, value_mode, unsignedp, type,
|| GET_CODE (target) == SUBREG
/* If the field isn't aligned enough to store as an ordinary memref,
store it as a bit field. */
|| (mode != BLKmode && SLOW_UNALIGNED_ACCESS (mode, MEM_ALIGN (target))
&& (MEM_ALIGN (target) < GET_MODE_ALIGNMENT (mode)
|| (mode != BLKmode
&& ((SLOW_UNALIGNED_ACCESS (mode, MEM_ALIGN (target))
&& (MEM_ALIGN (target) < GET_MODE_ALIGNMENT (mode)))
|| bitpos % GET_MODE_ALIGNMENT (mode)))
/* If the RHS and field are a constant size and the size of the
RHS isn't the same size as the bitfield, we must use bitfield
@ -7504,9 +7505,8 @@ expand_expr (exp, target, tmode, modifier)
/* If the field isn't aligned enough to fetch as a memref,
fetch it as a bit field. */
|| (mode1 != BLKmode
&& SLOW_UNALIGNED_ACCESS (mode1, MEM_ALIGN (op0))
&& ((TYPE_ALIGN (TREE_TYPE (tem))
< GET_MODE_ALIGNMENT (mode))
&& ((TYPE_ALIGN (TREE_TYPE (tem)) < GET_MODE_ALIGNMENT (mode)
&& SLOW_UNALIGNED_ACCESS (mode1, MEM_ALIGN (op0)))
|| (bitpos % GET_MODE_ALIGNMENT (mode) != 0)))
/* If the type and the field are a constant size and the
size of the type isn't the same size as the bitfield,