[PATCH] D156206: [BOLT] Accept function start as valid jump table entry

[Maksim Panchenko via Phabricator via llvm-commits]

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Jump tables may contain a function start address. One real-world example
is when a target basic block contains a recursive tail call that is
later optimized/folded into a jump table target.

While analyzing a jump table, we treat start address similar to an
address past the end of the containing function (a result of
__builtin_unreachable), i.e. we require another "regular" entry for the
heuristic to proceed.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D156206

Files:
  bolt/lib/Core/BinaryContext.cpp
  bolt/test/X86/jump-table-func-entry.s

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