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| author | Bin Cheng <bin.cheng@arm.com> | 2016-12-08 10:56:41 +0000 |
|---|---|---|
| committer | Bin Cheng <amker@gcc.gnu.org> | 2016-12-08 10:56:41 +0000 |
| commit | a5b03f2a17a7d41380de232bae2ab4800015407f (patch) | |
| tree | f6d9ab2f801704b0ab09524609d6e2bd89bd9d9f /gcc/tree-vect-loop-manip.c | |
| parent | 1adc60671c93ef3618983155d5a4304e3421614c (diff) | |
| download | gcc-a5b03f2a17a7d41380de232bae2ab4800015407f.zip gcc-a5b03f2a17a7d41380de232bae2ab4800015407f.tar.gz gcc-a5b03f2a17a7d41380de232bae2ab4800015407f.tar.bz2 | |
re PR middle-end/78684 (ICE in create_intersect_range_checks_index, at tree-vect-loop-manip.c:2074)
PR middle-end/78684
* tree-vect-loop-manip.c (create_intersect_range_checks_index): Check
sign bit for index step of data reference.
gcc/testsuite
PR middle-end/78684
* g++.dg/torture/pr78684.C: New test.
From-SVN: r243431
Diffstat (limited to 'gcc/tree-vect-loop-manip.c')
| -rw-r--r-- | gcc/tree-vect-loop-manip.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/gcc/tree-vect-loop-manip.c b/gcc/tree-vect-loop-manip.c index e13d6a2..beb2f06 100644 --- a/gcc/tree-vect-loop-manip.c +++ b/gcc/tree-vect-loop-manip.c @@ -2070,8 +2070,7 @@ create_intersect_range_checks_index (loop_vec_info loop_vinfo, tree *cond_expr, /* Index must have const step, otherwise DR_STEP won't be constant. */ gcc_assert (TREE_CODE (idx_step) == INTEGER_CST); /* Index must evaluate in the same direction as DR. */ - gcc_assert (!neg_step - || tree_int_cst_compare (idx_step, size_zero_node) < 0); + gcc_assert (!neg_step || tree_int_cst_sign_bit (idx_step) == 1); tree min1 = CHREC_LEFT (access1); tree min2 = CHREC_LEFT (access2); |