[llvm] Reapply [AMDGPU] SIFixSgprCopies should not process twice VGPR to SGPR copies inserted by PHI preprocessing. (PR #135243)

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git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp b/llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
index 1a9bef748..bb8e9a092 100644
--- a/llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
+++ b/llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
@@ -932,7 +932,7 @@ void SIFixSGPRCopies::analyzeVGPRToSGPRCopy(MachineInstr* MI) {
   const TargetRegisterClass *DstRC = MRI->getRegClass(DstReg);
 
   V2SCopyInfo Info(getNextVGPRToSGPRCopyId(), MI,
-                      TRI->getRegSizeInBits(*DstRC));
+                   TRI->getRegSizeInBits(*DstRC));
   SmallVector<MachineInstr *, 8> AnalysisWorklist;
   // Needed because the SSA is not a tree but a graph and may have
   // forks and joins. We should not then go same way twice.

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https://github.com/llvm/llvm-project/pull/135243