[llvm] [MachineCopyPropagation] Recognise and delete no-op moves produced after forwarded uses (PR #129889)

[via llvm-commits]

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git-clang-format --diff dd662d8028de628f569a62887378e4ed48d57fb9 03e255ff80a9ed59a47dfa0ebee55fc82e31aeb0 --extensions cpp -- llvm/lib/CodeGen/MachineCopyPropagation.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/MachineCopyPropagation.cpp b/llvm/lib/CodeGen/MachineCopyPropagation.cpp
index 9bc0f5836f..41df808185 100644
--- a/llvm/lib/CodeGen/MachineCopyPropagation.cpp
+++ b/llvm/lib/CodeGen/MachineCopyPropagation.cpp
@@ -975,7 +975,8 @@ void MachineCopyPropagation::ForwardCopyPropagateBlock(MachineBasicBlock &MBB) {
     // register move (i.e. one where source and destination registers are the
     // same). If so, delete it.
     CopyOperands = isCopyInstr(MI, *TII, UseCopyInstr);
-    if (CopyOperands && CopyOperands->Source->getReg() == CopyOperands->Destination->getReg()) {
+    if (CopyOperands &&
+        CopyOperands->Source->getReg() == CopyOperands->Destination->getReg()) {
       MI.eraseFromParent();
       NumDeletes++;
       Changed = true;

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https://github.com/llvm/llvm-project/pull/129889