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Diffstat (limited to 'gcc/tree-ssa-strlen.c')
| -rw-r--r-- | gcc/tree-ssa-strlen.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c index 75d27f1989b..5c21b92ec68 100644 --- a/gcc/tree-ssa-strlen.c +++ b/gcc/tree-ssa-strlen.c @@ -1952,6 +1952,28 @@ strlen_enter_block (struct dom_walk_data *walk_data ATTRIBUTE_UNUSED, int count_vdef = 100; do_invalidate (dombb, phi, visited, &count_vdef); BITMAP_FREE (visited); + if (count_vdef == 0) + { + /* If there were too many vdefs in between immediate + dominator and current bb, invalidate everything. + If stridx_to_strinfo has been unshared, we need + to free it, otherwise just set it to NULL. */ + if (!strinfo_shared ()) + { + unsigned int i; + strinfo si; + + for (i = 1; + vec_safe_iterate (stridx_to_strinfo, i, &si); + ++i) + { + free_strinfo (si); + (*stridx_to_strinfo)[i] = NULL; + } + } + else + stridx_to_strinfo = NULL; + } break; } } |