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loop.c (loop_giv_reduce_benefit): Copy mode size into int variable.

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* loop.c (loop_giv_reduce_benefit): Copy mode size into
	int variable.
	(check_ext_dependant_givs): Initialise u_start_val and
	u_end_val.
	(load_mems): Make last_max_reg unsigned.
	(try_swap_copy_prop): Use INSN_P and initialise set.

From-SVN: r39284
This commit is contained in:
Michael Hayes 2001-01-26 22:06:45 +00:00 committed by Michael Hayes
parent 5bb1db008c
commit 616fde536e
2 changed files with 22 additions and 10 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2001-01-27 Michael Hayes <mhayes@redhat.com>
* loop.c (loop_giv_reduce_benefit): Copy mode size into
int variable.
(check_ext_dependant_givs): Initialise u_start_val and
u_end_val.
(load_mems): Make last_max_reg unsigned.
(try_swap_copy_prop): Use INSN_P and initialise set.
Fri Jan 26 23:22:58 2001 Denis Chertykov <denisc@overta.ru>
* README.AVR : Removed.

23
gcc/loop.c
View File

@ -4135,17 +4135,19 @@ loop_giv_reduce_benefit (loop, bl, v, test_reg)
&& benefit > 0
&& GET_CODE (v->mult_val) == CONST_INT)
{
int size = GET_MODE_SIZE (GET_MODE (v->mem));
if (HAVE_POST_INCREMENT
&& INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem)))
&& INTVAL (v->mult_val) == size)
benefit += add_cost * bl->biv_count;
else if (HAVE_PRE_INCREMENT
&& INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem)))
&& INTVAL (v->mult_val) == size)
benefit += add_cost * bl->biv_count;
else if (HAVE_POST_DECREMENT
&& -INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem)))
&& -INTVAL (v->mult_val) == size)
benefit += add_cost * bl->biv_count;
else if (HAVE_PRE_DECREMENT
&& -INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem)))
&& -INTVAL (v->mult_val) == size)
benefit += add_cost * bl->biv_count;
}
#endif
@ -6482,7 +6484,8 @@ check_ext_dependant_givs (bl, loop_info)
int ze_ok = 0, se_ok = 0, info_ok = 0;
enum machine_mode biv_mode = GET_MODE (bl->biv->src_reg);
HOST_WIDE_INT start_val;
unsigned HOST_WIDE_INT u_end_val, u_start_val;
unsigned HOST_WIDE_INT u_end_val = 0;
unsigned HOST_WIDE_INT u_start_val = 0;
rtx incr = pc_rtx;
struct induction *v;
@ -8815,7 +8818,7 @@ load_mems (loop)
rtx end_label;
/* Nonzero if the next instruction may never be executed. */
int next_maybe_never = 0;
int last_max_reg = max_reg_num ();
unsigned int last_max_reg = max_reg_num ();
if (loop_info->mems_idx == 0)
return;
@ -9247,7 +9250,7 @@ try_swap_copy_prop (loop, replacement, regno)
unsigned int regno;
{
rtx insn;
rtx set;
rtx set = NULL_RTX;
unsigned int new_regno;
new_regno = REGNO (replacement);
@ -9257,7 +9260,7 @@ try_swap_copy_prop (loop, replacement, regno)
insn = next_insn_in_loop (loop, insn))
{
/* Search for the insn that copies REGNO to NEW_REGNO? */
if (GET_RTX_CLASS (GET_CODE (insn)) == 'i'
if (INSN_P (insn)
&& (set = single_set (insn))
&& GET_CODE (SET_DEST (set)) == REG
&& REGNO (SET_DEST (set)) == new_regno
@ -9266,7 +9269,7 @@ try_swap_copy_prop (loop, replacement, regno)
break;
}
if (insn != NULL_RTX)
if (set)
{
rtx prev_insn;
rtx prev_set;
@ -9277,7 +9280,7 @@ try_swap_copy_prop (loop, replacement, regno)
prev_insn = PREV_INSN (insn);
if (GET_RTX_CLASS (GET_CODE (insn)) == 'i'
if (INSN_P (insn)
&& (prev_set = single_set (prev_insn))
&& GET_CODE (SET_DEST (prev_set)) == REG
&& REGNO (SET_DEST (prev_set)) == regno)