[AllocToken, Clang] Implement TypeHashPointerSplit mode #156840
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Created using spr 1.3.8-beta.1
Created using spr 1.3.8-beta.1
This was referenced Sep 4, 2025
melver
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Sep 5, 2025
Implement the TypeHashPointerSplit mode: This mode assigns a token ID based on the hash of the allocated type's name, where the top half ID-space is reserved for types that contain pointers and the bottom half for types that do not contain pointers. This mode with max tokens of 2 (`-falloc-token-max=2`) may also be valuable for heap hardening strategies that simply separate pointer types from non-pointer types. Make it the new default mode. Link: https://discourse.llvm.org/t/rfc-a-framework-for-allocator-partitioning-hints/87434 Pull Request: llvm#156840
Created using spr 1.3.8-beta.1
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Implement the TypeHashPointerSplit mode: This mode assigns a token ID
based on the hash of the allocated type's name, where the top half
ID-space is reserved for types that contain pointers and the bottom half
for types that do not contain pointers.
This mode with max tokens of 2 (
-falloc-token-max=2) may alsobe valuable for heap hardening strategies that simply separate pointer
types from non-pointer types.
Make it the new default mode.
Link: https://discourse.llvm.org/t/rfc-a-framework-for-allocator-partitioning-hints/87434
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