Research verification date: 2026-08-16 UTC LLVM MemorySSA official documentation https://llvm.org/docs/MemorySSA.html Verified facts: MemoryUse, MemoryDef, and MemoryPhi roles; MemoryPhi merges may-reach definitions; liveOnEntry is the function-entry memory definition; the default walker consults the active alias-analysis stack. LLVM MemorySSA is intraprocedural. LLVM Alias Analysis Infrastructure official documentation https://llvm.org/docs/AliasAnalysis.html Verified facts: NoAlias, MayAlias, PartialAlias, and MustAlias categories; ModRef queries are conservative. F408 skips a store only for a static-disjoint proof or NoAlias and skips a supported call only when ModRef has no Mod bit. LLVM MemorySSA API reference https://llvm.org/docs/doxygen/classllvm_1_1MemorySSA.html Verified fact: MemorySSA maps LLVM instructions to MemoryAccess objects and exposes the live-on-entry definition used by the fail-closed boundary. POSE: Path-optimal symbolic execution of heap-manipulating programs https://arxiv.org/abs/2407.16827 Verified fact: path-optimal heap reasoning aims not to fork on alias choices that are not program control-flow choices. F408 adopts only this direction. Boundary: F408 does not claim a general clobber walker serialization, loop or interprocedural completeness, full POSE, or performance results from the cited systems.