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| author | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2020-01-16 10:28:02 +0000 |
|---|---|---|
| committer | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2020-01-16 10:28:02 +0000 |
| commit | f7dff7699fd70d3b8c3e637818e18c86f93ccfec (patch) | |
| tree | af31f070a180f10ce3976fea11218eab523cbd19 /gcc/tree-ssa-sccvn.c | |
| parent | 3b5757ea87ad2274b841340335bf7536204e615b (diff) | |
| download | gcc-f7dff7699fd70d3b8c3e637818e18c86f93ccfec.zip gcc-f7dff7699fd70d3b8c3e637818e18c86f93ccfec.tar.gz gcc-f7dff7699fd70d3b8c3e637818e18c86f93ccfec.tar.bz2 | |
PR tree-optimization/92429 do not fold when updating epilogue statements
This patch addresses the problem reported in PR92429. When creating an
epilogue for vectorization we have to replace the SSA_NAMEs in the
PATTERN_DEF_SEQs and RELATED_STMTs of the epilogue's loop_vec_infos. When doing
this we were using simplify_replace_tree which always folds the replacement.
This may lead to a different tree-node than the one which was analyzed in
vect_loop_analyze. In turn the new tree-node may require a different
vectorization than the one we had prepared for which caused the ICE in
question.
gcc/ChangeLog:
2020-01-16 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR tree-optimization/92429
* tree-ssa-loop-niter.h (simplify_replace_tree): Add parameter.
* tree-ssa-loop-niter.c (simplify_replace_tree): Add parameter to
control folding.
* tree-vect-loop.c (update_epilogue_vinfo): Do not fold when replacing
tree.
gcc/testsuite/ChangeLog:
2020-01-16 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR tree-optimization/92429
* gcc.dg/vect/pr92429.c: New test.
Diffstat (limited to 'gcc/tree-ssa-sccvn.c')
0 files changed, 0 insertions, 0 deletions