[llvm] [Pipeliner] Fix Phi node dependency calculation (PR #160056)

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Mon Sep 22 02:29:59 PDT 2025


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/MachinePipeliner.cpp
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``````````diff
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 4b9e3fda4..3be2e48ee 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -3013,10 +3013,11 @@ bool SwingSchedulerDAG::mayOverlapInLaterIter(
   // having the same value, but not from the same parent instruction.
   // This is possible if the values come via phi nodes. So check
   // for the parents of phi nodes.
-  auto doesOverlap = [&](MachineInstr* MI, MachineInstr* MI2) {
+  auto doesOverlap = [&](MachineInstr *MI, MachineInstr *MI2) {
     if (MI->isPHI()) {
       for (auto MO : MI->operands()) {
-        if (!MO.isReg()) continue;
+        if (!MO.isReg())
+          continue;
         if (MI2 == MRI.getVRegDef(MO.getReg()))
           return true;
       }

``````````

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https://github.com/llvm/llvm-project/pull/160056


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