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gcse.c (try_replace_reg): Use num_changes_pending.

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2002-07-23  Jan Hubicka  <jh@suse.cz>

	* gcse.c (try_replace_reg): Use num_changes_pending.
	* recog.c (num_changes_pending): New function.
	(validate_replace_src): Use validate_repalce_src_group.
	(validate_replace_src_group): New.
	* recog.h (validate_repalce_src_group): New.
	(num_changes_pending): Likewise.

From-SVN: r55677
This commit is contained in:
Jan Hubicka 2002-07-23 14:08:10 +02:00 • committed by Gerald Pfeifer
parent a0dc500c86
commit 2b773ee2c1
4 changed files with 33 additions and 8 deletions
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9
gcc/ChangeLog
View file

@ -1,3 +1,12 @@
2002-07-23 Jan Hubicka <jh@suse.cz>
* gcse.c (try_replace_reg): Use num_changes_pending.
* recog.c (num_changes_pending): New function.
(validate_replace_src): Use validate_repalce_src_group.
(validate_replace_src_group): New.
* recog.h (validate_repalce_src_group): New.
(num_changes_pending): Likewise.
Tue Jul 23 12:16:58 2002 J"orn Rennecke <joern.rennecke@superh.com>
* calls.c (emit_library_call_value_1): If

7
gcc/gcse.c
View file

@ -3977,10 +3977,9 @@ try_replace_reg (from, to, insn)
int success = 0;
rtx set = single_set (insn);
if (reg_mentioned_p (from, PATTERN (insn)))
{
success = validate_replace_src (from, to, insn);
}
validate_replace_src_group (from, to, insn);
if (num_changes_pending () && apply_change_group ())
success = 1;
if (!success && set && reg_mentioned_p (from, SET_SRC (set)))
{

23
gcc/recog.c
View file

@ -308,6 +308,13 @@ insn_invalid_p (insn)
return 0;
}
/* Return number of changes made and not validated yet. */
int
num_changes_pending ()
{
return num_changes;
}
/* Apply a group of changes previously issued with `validate_change'.
Return 1 if all changes are valid, zero otherwise. */
@ -671,11 +678,10 @@ validate_replace_src_1 (x, data)
}
/* Try replacing every occurrence of FROM in INSN with TO, avoiding
SET_DESTs. After all changes have been made, validate by seeing if
INSN is still valid. */
SET_DESTs. */
int
validate_replace_src (from, to, insn)
void
validate_replace_src_group (from, to, insn)
rtx from, to, insn;
{
struct validate_replace_src_data d;
@ -684,6 +690,15 @@ validate_replace_src (from, to, insn)
d.to = to;
d.insn = insn;
note_uses (&PATTERN (insn), validate_replace_src_1, &d);
}
/* Same as validate_repalace_src_group, but validate by seeing if
INSN is still valid. */
int
validate_replace_src (from, to, insn)
rtx from, to, insn;
{
validate_replace_src_group (from, to, insn);
return apply_change_group ();
}

2
gcc/recog.h
View file

@ -89,6 +89,8 @@ extern int validate_replace_rtx_subexp PARAMS ((rtx, rtx, rtx, rtx *));
extern int validate_replace_rtx PARAMS ((rtx, rtx, rtx));
extern void validate_replace_rtx_group PARAMS ((rtx, rtx, rtx));
extern int validate_replace_src PARAMS ((rtx, rtx, rtx));
extern void validate_replace_src_group PARAMS ((rtx, rtx, rtx));
extern int num_changes_pending PARAMS ((void));
#ifdef HAVE_cc0
extern int next_insn_tests_no_inequality PARAMS ((rtx));
#endif