[all-commits] [llvm/llvm-project] 9b0832: [SDAG] Ensure load is included in output chain of ...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/release/20.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 9b0832508ede38397c8ebb7a348d50ce1517af4a
      https://github.com/llvm/llvm-project/commit/9b0832508ede38397c8ebb7a348d50ce1517af4a
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2025-05-23 (Fri, 23 May 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    A llvm/test/CodeGen/X86/pr140491-sincos-lifetimes.ll

  Log Message:
  -----------
  [SDAG] Ensure load is included in output chain of sincos expansion (#140525)

The load not being included in the chain meant that it could materialize
after a `@llvm.lifetime.end` annotation on the pointer. This could
result in miscompiles if the stack slot is reused for another value.

Fixes https://github.com/llvm/llvm-project/issues/140491

(cherry picked from commit c9d62491981fe720c1b3255fa2f9ddf744590c65)



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