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bfin.h (LOCAL_ALIGNMENT): Define. 

* config/bfin/bfin.h (LOCAL_ALIGNMENT): Define.
	* config/bfin/bfin.c (bfin_local_alignment): New function.
	* config/bfin/bfin-protos.h (bfin_local_alignment): Declare it.

From-SVN: r124570
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Bernd Schmidt 2007-05-09 11:57:49 +00:00 committed by Bernd Schmidt
parent 0416068158
commit 520c62adcd
4 changed files with 37 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-05-08 Bernd Schmidt <bernd.schmidt@analog.com>
* config/bfin/bfin.h (LOCAL_ALIGNMENT): Define.
* config/bfin/bfin.c (bfin_local_alignment): New function.
* config/bfin/bfin-protos.h (bfin_local_alignment): Declare it.
2007-05-08 Chao-ying Fu <fu@mips.com>
* doc/md.texi (msub@var{m}@var{n}4, usub@var{m}@var{n}4): Document.

1
gcc/config/bfin/bfin-protos.h
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@ -86,6 +86,7 @@ extern void override_options (void);
extern void asm_conditional_branch (rtx, rtx *, int, int);
extern rtx bfin_gen_compare (rtx, Mmode);
extern int bfin_local_alignment (tree, int);
extern int bfin_return_in_memory (tree);
extern void initialize_trampoline (rtx, rtx, rtx);
extern bool bfin_legitimate_address_p (Mmode, rtx, int);

18
gcc/config/bfin/bfin.c
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@ -3045,6 +3045,24 @@ bfin_expand_movmem (rtx dst, rtx src, rtx count_exp, rtx align_exp)
return false;
}
/* Compute the alignment for a local variable.
TYPE is the data type, and ALIGN is the alignment that
the object would ordinarily have. The value of this macro is used
instead of that alignment to align the object. */
int
bfin_local_alignment (tree type, int align)
{
/* Increasing alignment for (relatively) big types allows the builtin
memcpy can use 32 bit loads/stores. */
if (TYPE_SIZE (type)
&& TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST
&& (TREE_INT_CST_LOW (TYPE_SIZE (type)) > 8
|| TREE_INT_CST_HIGH (TYPE_SIZE (type))) && align < 32)
return 32;
return align;
}
/* Implement TARGET_SCHED_ISSUE_RATE. */
static int

12
gcc/config/bfin/bfin.h
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@ -227,6 +227,18 @@ extern const char *bfin_library_id_string;
/*#define DATA_ALIGNMENT(TYPE, BASIC-ALIGN) for arrays.. */
/* If defined, a C expression to compute the alignment for a local
variable. TYPE is the data type, and ALIGN is the alignment that
the object would ordinarily have. The value of this macro is used
instead of that alignment to align the object.
If this macro is not defined, then ALIGN is used.
One use of this macro is to increase alignment of medium-size
data to make it all fit in fewer cache lines. */
#define LOCAL_ALIGNMENT(TYPE, ALIGN) bfin_local_alignment ((TYPE), (ALIGN))
/* Make strings word-aligned so strcpy from constants will be faster. */
#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
(TREE_CODE (EXP) == STRING_CST \