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re PR tree-optimization/77724 (bootstrap-O3 broken: ICE: in tree_to_uhwi, at tree.c:7330)

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Fix PR tree-optimization/77724

2016-09-27  Robin Dapp  <rdapp@linux.vnet.ibm.com>

        PR tree-optimization/77724
        * tree-vect-loop-manip.c (create_intersect_range_checks_index):
        Add tree_fits_shwi_p check.

From-SVN: r240565
This commit is contained in:
Robin Dapp 2016-09-28 05:13:19 +00:00 committed by Markus Trippelsdorf
parent c03049b614
commit 1f56389164
3 changed files with 25 additions and 5 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2016-09-27 Robin Dapp <rdapp@linux.vnet.ibm.com>
PR tree-optimization/77724
* tree-vect-loop-manip.c (create_intersect_range_checks_index):
Add tree_fits_shwi_p check.
2016-09-27 Jakub Jelinek <jakub@redhat.com>
* auto-inc-dec.c (try_merge): Remove break after return.

12
gcc/testsuite/gcc.dg/vect/pr77724.c Normal file
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@ -0,0 +1,12 @@
/* { dg-do compile } */
int a[81];
int b, c;
void
fn1()
{
int d = b;
for (; c; --c)
a[c + d] = a[c];
}

12
gcc/tree-vect-loop-manip.c
View File

@ -2301,6 +2301,9 @@ create_intersect_range_checks_index (loop_vec_info loop_vinfo, tree *cond_expr,
if (!tree_fits_uhwi_p (dr_a.seg_len) || !tree_fits_uhwi_p (dr_b.seg_len))
return false;
if (!tree_fits_shwi_p (DR_STEP (dr_a.dr)))
return false;
if (!operand_equal_p (DR_BASE_OBJECT (dr_a.dr), DR_BASE_OBJECT (dr_b.dr), 0))
return false;
@ -2310,9 +2313,8 @@ create_intersect_range_checks_index (loop_vec_info loop_vinfo, tree *cond_expr,
gcc_assert (TREE_CODE (DR_STEP (dr_a.dr)) == INTEGER_CST);
bool neg_step = tree_int_cst_compare (DR_STEP (dr_a.dr), size_zero_node) < 0;
unsigned HOST_WIDE_INT abs_step = tree_to_uhwi (DR_STEP (dr_a.dr));
if (neg_step)
abs_step = -abs_step;
unsigned HOST_WIDE_INT abs_step
= absu_hwi (tree_to_shwi (DR_STEP (dr_a.dr)));
unsigned HOST_WIDE_INT seg_len1 = tree_to_uhwi (dr_a.seg_len);
unsigned HOST_WIDE_INT seg_len2 = tree_to_uhwi (dr_b.seg_len);
@ -2331,7 +2333,7 @@ create_intersect_range_checks_index (loop_vec_info loop_vinfo, tree *cond_expr,
{
tree access1 = DR_ACCESS_FN (dr_a.dr, i);
tree access2 = DR_ACCESS_FN (dr_b.dr, i);
/* Two index must be the same if they are not scev, or not scev wrto
/* Two indices must be the same if they are not scev, or not scev wrto
current loop being vecorized. */
if (TREE_CODE (access1) != POLYNOMIAL_CHREC
|| TREE_CODE (access2) != POLYNOMIAL_CHREC
@ -2343,7 +2345,7 @@ create_intersect_range_checks_index (loop_vec_info loop_vinfo, tree *cond_expr,
return false;
}
/* Two index must have the same step. */
/* The two indices must have the same step. */
if (!operand_equal_p (CHREC_RIGHT (access1), CHREC_RIGHT (access2), 0))
return false;