https://github.com/vitalybuka created https://github.com/llvm/llvm-project/pull/101837
Before the patch each TU was executing pair `__asan_before_dynamic_init` and `__asan_after_dynamic_init`. `__asan_before_dynamic_init` supports incremental poisoning, but `__asan_after_dynamic_init` unpoisons all globals, so `__asan_before_dynamic_init` must repoison everything again. So it's O(N^2) where N is the number of globals (or TUs). It can be expensive for large binaries. The patch will make it O(N). The patch requires LLD and platform with SANITIZER_CAN_USE_PREINIT_ARRAY. For the rest it continue to be O(N^2). _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
