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| author | Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org> | 2020-11-24 06:50:53 +0530 |
|---|---|---|
| committer | Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org> | 2020-11-24 06:57:46 +0530 |
| commit | 5700973f4a30762b4fc21687bb5f7843e55da2e4 (patch) | |
| tree | ab46cb4c3c4498841557134ca7ebb937458fc5f4 /gcc/c/c-parser.c | |
| parent | 6692c400f207c68fb11b44182ae127856e8b9ad3 (diff) | |
| download | gcc-5700973f4a30762b4fc21687bb5f7843e55da2e4.zip gcc-5700973f4a30762b4fc21687bb5f7843e55da2e4.tar.gz gcc-5700973f4a30762b4fc21687bb5f7843e55da2e4.tar.bz2 | |
tree-opt: Fix segfault in tree-if-conv.c with -march=armv8.2-a+sve [PR97849]
The issue here is that rpo vn may eliminate target ssa_name referred to in
redundant_ssa_names, and thus ifcvt_local_dce may replace candidate
ssa_name with invalid ssa_name resulting in incorrect IR. The patch simply
does ssa_name replacement before calling do_rpo_vn, which fixes the issue.
gcc/
2020-11-24 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
PR tree-optimization/97849
* tree-if-conv.c (tree_if_conversion): Move ssa_name
replacement code from ifcvt_local_dce to this function
before calling do_rpo_vn.
gcc/testsuite/
2020-11-24 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
PR tree-optimization/97849
* gcc.dg/tree-ssa/pr97849.c: New test.
Diffstat (limited to 'gcc/c/c-parser.c')
0 files changed, 0 insertions, 0 deletions