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Make scev_is_linear_expression return false if the evolution is not affine multivariate.

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2009-07-30  Sebastian Pop  <sebastian.pop@amd.com>

	* tree-chrec.c (operator_is_linear): Handle BIT_NOT_EXPR.
	(scev_is_linear_expression): Return false if the evolution is not
	affine multivariate.

From-SVN: r150298
This commit is contained in:
Sebastian Pop 2009-07-31 02:38:13 +00:00 committed by Sebastian Pop
parent ed91d6616c
commit 765deab7d0
2 changed files with 13 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-07-30 Sebastian Pop <sebastian.pop@amd.com>
* tree-chrec.c (operator_is_linear): Handle BIT_NOT_EXPR.
(scev_is_linear_expression): Return false if the evolution is not
affine multivariate.
2009-07-30 Sebastian Pop <sebastian.pop@amd.com>
* tree-data-ref.c (graphite_find_data_references_in_stmt): New.

9
gcc/tree-chrec.c
View File

@ -1411,7 +1411,7 @@ for_each_scev_op (tree *scev, bool (*cbck) (tree *, void *), void *data)
case 2:
for_each_scev_op (&TREE_OPERAND (*scev, 1), cbck, data);
case 1:
for_each_scev_op (&TREE_OPERAND (*scev, 0), cbck, data);
@ -1438,6 +1438,7 @@ operator_is_linear (tree scev)
case NEGATE_EXPR:
case SSA_NAME:
case NON_LVALUE_EXPR:
case BIT_NOT_EXPR:
CASE_CONVERT:
return true;
@ -1461,6 +1462,10 @@ scev_is_linear_expression (tree scev)
return !(tree_contains_chrecs (TREE_OPERAND (scev, 0), NULL)
&& tree_contains_chrecs (TREE_OPERAND (scev, 1), NULL));
if (TREE_CODE (scev) == POLYNOMIAL_CHREC
&& !evolution_function_is_affine_multivariate_p (scev, CHREC_VARIABLE (scev)))
return false;
switch (TREE_CODE_LENGTH (TREE_CODE (scev)))
{
case 3:
@ -1471,7 +1476,7 @@ scev_is_linear_expression (tree scev)
case 2:
return scev_is_linear_expression (TREE_OPERAND (scev, 0))
&& scev_is_linear_expression (TREE_OPERAND (scev, 1));
case 1:
return scev_is_linear_expression (TREE_OPERAND (scev, 0));