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| author | Fei Yang <felix.yang@huawei.com> | 2020-06-12 11:37:00 +0100 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2020-06-12 11:37:00 +0100 |
| commit | d30846a02eb9ea43b61311e74fbf05692ffefba2 (patch) | |
| tree | ff2094dc7651fb89194c9657397bd7e474fd1f96 /gcc/gimplify.c | |
| parent | 135a8ad3a59972ea64b1244b0e221cdded9a6ec6 (diff) | |
| download | gcc-d30846a02eb9ea43b61311e74fbf05692ffefba2.zip gcc-d30846a02eb9ea43b61311e74fbf05692ffefba2.tar.gz gcc-d30846a02eb9ea43b61311e74fbf05692ffefba2.tar.bz2 | |
vect: Fix an ICE in vect_loop_versioning [PR95570]
In the test case for PR95570, the only data reference in the loop is a
gather-statter access. Scalar evolution analysis for this data reference
failed, so DR_STEP is NULL_TREE. This leads to the segmentation fault.
We should filter out scatter-gather access in vect_enhance_data_refs_alignment.
2020-06-12 Felix Yang <felix.yang@huawei.com>
gcc/
PR tree-optimization/95570
* tree-vect-data-refs.c (vect_relevant_for_alignment_p): New function.
(vect_verify_datarefs_alignment): Call it to filter out data references
in the loop whose alignment is irrelevant.
(vect_get_peeling_costs_all_drs): Likewise.
(vect_peeling_supportable): Likewise.
(vect_enhance_data_refs_alignment): Likewise.
gcc/testsuite/
PR tree-optimization/95570
* gcc.dg/vect/pr95570.c: New test.
Diffstat (limited to 'gcc/gimplify.c')
0 files changed, 0 insertions, 0 deletions