[all-commits] [llvm/llvm-project] 870bdc: Reapply "[AMDGPU]Optimize SGPR spills (#93668)"

[Vikash Gupta via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 870bdc6ea7d98538a2ac80b85d97b7dd1e5ad42d
      https://github.com/llvm/llvm-project/commit/870bdc6ea7d98538a2ac80b85d97b7dd1e5ad42d
  Author: vikashgu <Vikash.Gupta at amd.com>
  Date:   2024-10-03 (Thu, 03 Oct 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/test/CodeGen/AMDGPU/llc-pipeline.ll
    M llvm/test/CodeGen/AMDGPU/preserve-wwm-copy-dst-reg.ll
    M llvm/test/CodeGen/AMDGPU/sgpr-regalloc-flags.ll
    M llvm/test/CodeGen/AMDGPU/si-lower-sgpr-spills-vgpr-lanes-usage.mir
    M llvm/test/CodeGen/AMDGPU/spill-scavenge-offset.ll

  Log Message:
  -----------
  Reapply "[AMDGPU]Optimize SGPR spills (#93668)"

This reverts commit c2fc7f75f67039bb1ed577bc0edbd699a850cd9d. As the
dependent patch about split vgpr regalloc pipeline solved the issue(#96353).



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