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Fix chrec_contains_symbols_defined_in_loop.

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2010-08-20  Sebastian Pop  <sebastian.pop@amd.com>

	* tree-scalar-evolution.c (chrec_contains_symbols_defined_in_loop):
	Do not check for VAR_DECL, PARM_DECL, FUNCTION_DECL, LABEL_DECL,
	RESULT_DECL, and FIELD_DECL.  Return false for an
	SSA_NAME_IS_DEFAULT_DEF.
	(compute_scalar_evolution_in_loop): Do not further analyze the
	scalar evolution when no_evolution_in_loop_p returns true.

From-SVN: r164789
This commit is contained in:
Sebastian Pop 2010-09-30 21:18:38 +00:00 • committed by Sebastian Pop
parent 21d9100956
commit 492e545678
3 changed files with 32 additions and 11 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2010-09-30 Sebastian Pop <sebastian.pop@amd.com>
* tree-scalar-evolution.c (chrec_contains_symbols_defined_in_loop):
Do not check for VAR_DECL, PARM_DECL, FUNCTION_DECL, LABEL_DECL,
RESULT_DECL, and FIELD_DECL. Return false for an
SSA_NAME_IS_DEFAULT_DEF.
(compute_scalar_evolution_in_loop): Do not further analyze the
scalar evolution when no_evolution_in_loop_p returns true.
2010-09-30 Sebastian Pop <sebastian.pop@amd.com>
* tree-chrec.h (evolution_function_is_affine_p): Do not check

9
gcc/ChangeLog.graphite
View file

@ -1,3 +1,12 @@
2010-08-20 Sebastian Pop <sebastian.pop@amd.com>
* tree-scalar-evolution.c (chrec_contains_symbols_defined_in_loop):
Do not check for VAR_DECL, PARM_DECL, FUNCTION_DECL, LABEL_DECL,
RESULT_DECL, and FIELD_DECL. Return false for an
SSA_NAME_IS_DEFAULT_DEF.
(compute_scalar_evolution_in_loop): Do not further analyze the
scalar evolution when no_evolution_in_loop_p returns true.
2010-08-20 Sebastian Pop <sebastian.pop@amd.com>
* tree-chrec.h (evolution_function_is_affine_p): Do not check

25
gcc/tree-scalar-evolution.c
View file

@ -385,19 +385,17 @@ chrec_contains_symbols_defined_in_loop (const_tree chrec, unsigned loop_nb)
if (is_gimple_min_invariant (chrec))
return false;
if (TREE_CODE (chrec) == VAR_DECL
|| TREE_CODE (chrec) == PARM_DECL
|| TREE_CODE (chrec) == FUNCTION_DECL
|| TREE_CODE (chrec) == LABEL_DECL
|| TREE_CODE (chrec) == RESULT_DECL
|| TREE_CODE (chrec) == FIELD_DECL)
return true;
if (TREE_CODE (chrec) == SSA_NAME)
{
gimple def = SSA_NAME_DEF_STMT (chrec);
struct loop *def_loop = loop_containing_stmt (def);
struct loop *loop = get_loop (loop_nb);
gimple def;
loop_p def_loop, loop;
if (SSA_NAME_IS_DEFAULT_DEF (chrec))
return false;
def = SSA_NAME_DEF_STMT (chrec);
def_loop = loop_containing_stmt (def);
loop = get_loop (loop_nb);
if (def_loop == NULL)
return false;
@ -1834,13 +1832,18 @@ compute_scalar_evolution_in_loop (struct loop *wrto_loop,
struct loop *def_loop,
tree ev)
{
bool val;
tree res;
if (def_loop == wrto_loop)
return ev;
def_loop = superloop_at_depth (def_loop, loop_depth (wrto_loop) + 1);
res = compute_overall_effect_of_inner_loop (def_loop, ev);
if (no_evolution_in_loop_p (res, wrto_loop->num, &val) && val)
return res;
return analyze_scalar_evolution_1 (wrto_loop, res, chrec_not_analyzed_yet);
}