[all-commits] [llvm/llvm-project] 2cacf4: [X86][TargetLowering] Avoid deleting temporary nod...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/release/20.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 2cacf46f35c8fa174a30a4b628a4b19e391a4798
      https://github.com/llvm/llvm-project/commit/2cacf46f35c8fa174a30a4b628a4b19e391a4798
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2025-05-13 (Tue, 13 May 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    A llvm/test/CodeGen/X86/pr138982.ll

  Log Message:
  -----------
  [X86][TargetLowering] Avoid deleting temporary nodes in `getNegatedExpression` (#139029)

In the original case, the third call to `getCheaperNegatedExpression`
deletes the SDNode returned by the first call.
Similar to 74e6030bcbcc8e628f9a99a424342a0c656456f9, this patch uses
`HandleSDNodes` to prevent nodes from being deleted by subsequent calls.
Closes https://github.com/llvm/llvm-project/issues/138944.

(cherry picked from commit 143cce72b1f50bc37363315793b80ae92d2b0ae3)



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