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| author | Andrew MacLeod <amacleod@redhat.com> | 2023-09-26 09:27:52 -0400 |
|---|---|---|
| committer | Andrew MacLeod <amacleod@redhat.com> | 2023-09-26 14:27:48 -0400 |
| commit | c9dbace008e60255b10891f0c966b44a0225d7ab (patch) | |
| tree | 5e3cea23bf0e82c361b95f86b114b984ac429748 /gcc/value-relation.cc | |
| parent | 53daf67fd55e005e37cb3ab33ac0783a71761de9 (diff) | |
| download | gcc-c9dbace008e60255b10891f0c966b44a0225d7ab.zip gcc-c9dbace008e60255b10891f0c966b44a0225d7ab.tar.gz gcc-c9dbace008e60255b10891f0c966b44a0225d7ab.tar.bz2 | |
Ensure ssa_name is still valid.
When the IL changes, an equivalence set may contain ssa_names that no
longer exist. Ensure names are still valid and not in the free list.
PR tree-optimization/111599
gcc/
* value-relation.cc (relation_oracle::valid_equivs): Ensure
ssa_name is valid.
gcc/testsuite/
* gcc.dg/pr111599.c: New.
Diffstat (limited to 'gcc/value-relation.cc')
| -rw-r--r-- | gcc/value-relation.cc | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gcc/value-relation.cc b/gcc/value-relation.cc index f2c668a..8fea4aa 100644 --- a/gcc/value-relation.cc +++ b/gcc/value-relation.cc @@ -274,9 +274,12 @@ relation_oracle::valid_equivs (bitmap b, const_bitmap equivs, basic_block bb) EXECUTE_IF_SET_IN_BITMAP (equivs, 0, i, bi) { tree ssa = ssa_name (i); - const_bitmap ssa_equiv = equiv_set (ssa, bb); - if (ssa_equiv == equivs) - bitmap_set_bit (b, i); + if (ssa && !SSA_NAME_IN_FREE_LIST (ssa)) + { + const_bitmap ssa_equiv = equiv_set (ssa, bb); + if (ssa_equiv == equivs) + bitmap_set_bit (b, i); + } } } |