[all-commits] [llvm/llvm-project] c9d624: [SDAG] Ensure load is included in output chain of ...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c9d62491981fe720c1b3255fa2f9ddf744590c65
      https://github.com/llvm/llvm-project/commit/c9d62491981fe720c1b3255fa2f9ddf744590c65
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2025-05-20 (Tue, 20 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



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