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var-tracking.c (variable_different_p): Add a parameter compare_current_location...

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* var-tracking.c (variable_different_p): Add a parameter
	compare_current_location, compare current location of variable parts
	if it is true.
	(dataflow_set_different_1): Pass compare_current_location == false.
	(dataflow_set_different_2): Pass compare_current_location == false.
	(emit_notes_for_differences_1): Pass compare_current_location == true.

From-SVN: r81242
This commit is contained in:
Josef Zlomek 2004-04-28 08:00:45 +02:00 committed by Josef Zlomek
parent cfa2949646
commit 83532fb78e
2 changed files with 28 additions and 8 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2004-04-28 Josef Zlomek <zlomekj@suse.cz>
* var-tracking.c (variable_different_p): Add a parameter
compare_current_location, compare current location of variable parts
if it is true.
(dataflow_set_different_1): Pass compare_current_location == false.
(dataflow_set_different_2): Pass compare_current_location == false.
(emit_notes_for_differences_1): Pass compare_current_location == true.
2004-04-28 Ulrich Weigand <uweigand@de.ibm.com> 2004-04-28 Ulrich Weigand <uweigand@de.ibm.com>
* config/s390/s390.md ("casesi"): Mark jump table access as * config/s390/s390.md ("casesi"): Mark jump table access as

27
gcc/var-tracking.c
View File

@ -304,7 +304,7 @@ static int variable_union_info_cmp_pos (const void *, const void *);
static int variable_union (void **, void *); static int variable_union (void **, void *);
static void dataflow_set_union (dataflow_set *, dataflow_set *); static void dataflow_set_union (dataflow_set *, dataflow_set *);
static bool variable_part_different_p (variable_part *, variable_part *); static bool variable_part_different_p (variable_part *, variable_part *);
static bool variable_different_p (variable, variable); static bool variable_different_p (variable, variable, bool);
static int dataflow_set_different_1 (void **, void *); static int dataflow_set_different_1 (void **, void *);
static int dataflow_set_different_2 (void **, void *); static int dataflow_set_different_2 (void **, void *);
static bool dataflow_set_different (dataflow_set *, dataflow_set *); static bool dataflow_set_different (dataflow_set *, dataflow_set *);
@ -1260,12 +1260,13 @@ variable_part_different_p (variable_part *vp1, variable_part *vp2)
return false; return false;
} }
/* Return true if variables VAR1 and VAR2 are different (only the first /* Return true if variables VAR1 and VAR2 are different.
location in the list of locations is checked for each offset, If COMPARE_CURRENT_LOCATION is true compare also the cur_loc of each
i.e. when true is returned a note should be emitted). */ variable part. */
static bool static bool
variable_different_p (variable var1, variable var2) variable_different_p (variable var1, variable var2,
bool compare_current_location)
{ {
int i; int i;
@ -1279,6 +1280,16 @@ variable_different_p (variable var1, variable var2)
{ {
if (var1->var_part[i].offset != var2->var_part[i].offset) if (var1->var_part[i].offset != var2->var_part[i].offset)
return true; return true;
if (compare_current_location)
{
if (!((GET_CODE (var1->var_part[i].cur_loc) == REG
&& GET_CODE (var2->var_part[i].cur_loc) == REG
&& (REGNO (var1->var_part[i].cur_loc)
== REGNO (var2->var_part[i].cur_loc)))
|| rtx_equal_p (var1->var_part[i].cur_loc,
var2->var_part[i].cur_loc)))
return true;
}
if (variable_part_different_p (&var1->var_part[i], &var2->var_part[i])) if (variable_part_different_p (&var1->var_part[i], &var2->var_part[i]))
return true; return true;
if (variable_part_different_p (&var2->var_part[i], &var1->var_part[i])) if (variable_part_different_p (&var2->var_part[i], &var1->var_part[i]))
@ -1307,7 +1318,7 @@ dataflow_set_different_1 (void **slot, void *data)
return 0; return 0;
} }
if (variable_different_p (var1, var2)) if (variable_different_p (var1, var2, false))
{ {
dataflow_set_different_value = true; dataflow_set_different_value = true;
@ -1342,7 +1353,7 @@ dataflow_set_different_2 (void **slot, void *data)
#ifdef ENABLE_CHECKING #ifdef ENABLE_CHECKING
/* If both variables are defined they have been already checked for /* If both variables are defined they have been already checked for
equivalence. */ equivalence. */
if (variable_different_p (var1, var2)) if (variable_different_p (var1, var2, false))
abort (); abort ();
#endif #endif
@ -2286,7 +2297,7 @@ emit_notes_for_differences_1 (void **slot, void *data)
empty_var->n_var_parts = 0; empty_var->n_var_parts = 0;
variable_was_changed (empty_var, NULL); variable_was_changed (empty_var, NULL);
} }
else if (variable_different_p (old_var, new_var)) else if (variable_different_p (old_var, new_var, true))
{ {
variable_was_changed (new_var, NULL); variable_was_changed (new_var, NULL);
} }