[AMDGPU] AMDGPULateCodeGenPrepare Legacy PM: replace `setPreservesAll()` with `setPreservesCFG()`#148167

Merged

arsenm merged 9 commits intollvm:mainfrom

J-MR-T:amdgpu-late-cgp-preserve-cfg-not-all

Aug 12, 2025

Commits on Jul 12, 2025

[NFC] adjust comment, see review
J-MR-T
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Commits on Aug 12, 2025