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h8300.c (h8300_hard_regno_scratch_ok): New.

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* config/h8300/h8300.c (h8300_hard_regno_scratch_ok): New.
(TARGET_HARD_REGNO_SCRATCH_OK): Define.

From-SVN: r138038
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DJ Delorie 2008-07-21 13:41:13 -04:00 committed by DJ Delorie
parent a03f1b22cb
commit 2e76288428
2 changed files with 23 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2008-07-21 DJ Delorie <dj@redhat.com>
* config/h8300/h8300.c (h8300_hard_regno_scratch_ok): New.
(TARGET_HARD_REGNO_SCRATCH_OK): Define.
2008-07-21 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/spu.md ("div<mode>3"): Convert into expander, move

18
gcc/config/h8300/h8300.c
View File

@ -111,6 +111,7 @@ static unsigned int h8300_bitfield_length (rtx, rtx);
static unsigned int h8300_binary_length (rtx, const h8300_length_table *);
static bool h8300_short_move_mem_p (rtx, enum rtx_code);
static unsigned int h8300_move_length (rtx *, const h8300_length_table *);
static bool h8300_hard_regno_scratch_ok (unsigned int);
/* CPU_TYPE, says what cpu we're compiling for. */
int cpu_type;
@ -5612,6 +5613,20 @@ h8300_hard_regno_rename_ok (unsigned int old_reg ATTRIBUTE_UNUSED,
return 1;
}
/* Returns true if register REGNO is safe to be allocated as a scratch
register in the current function. */
static bool
h8300_hard_regno_scratch_ok (unsigned int regno)
{
if (h8300_current_function_interrupt_function_p ()
&& ! WORD_REG_USED (regno))
return false;
return true;
}
/* Return nonzero if X is a legitimate constant. */
int
@ -5745,6 +5760,9 @@ h8300_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
#undef TARGET_MACHINE_DEPENDENT_REORG
#define TARGET_MACHINE_DEPENDENT_REORG h8300_reorg
#undef TARGET_HARD_REGNO_SCRATCH_OK
#define TARGET_HARD_REGNO_SCRATCH_OK h8300_hard_regno_scratch_ok
#undef TARGET_DEFAULT_TARGET_FLAGS
#define TARGET_DEFAULT_TARGET_FLAGS TARGET_DEFAULT