[PATCH] D82124: [StackSafety] Add "Must Live" logic

[Vitaly Buka via Phabricator via llvm-commits]

vitalybuka created this revision.
vitalybuka added a reviewer: eugenis.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

Extend StackLifetime with option to calculate liveliness
where alloca is only considered alive on basic block entry
if all non-dead predecessors had it alive at terminators.

Depends on D82043 <https://reviews.llvm.org/D82043>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82124

Files:
  llvm/include/llvm/Analysis/StackLifetime.h
  llvm/lib/Analysis/StackLifetime.cpp
  llvm/lib/CodeGen/SafeStack.cpp
  llvm/test/Analysis/StackSafetyAnalysis/lifetime.ll

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