From 4146c1756d81d37675d802371109848132e6bf80 Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin@google.com>
Date: Tue, 2 Aug 2022 12:14:24 -0700
Subject: [PATCH] [nfc] Remove unused parameter in
 TailDuplicator::duplicateSimpleBB

Differential Revision: https://reviews.llvm.org/D131008
---
 llvm/include/llvm/CodeGen/TailDuplicator.h | 3 +--
 llvm/lib/CodeGen/TailDuplicator.cpp        | 5 ++---
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/llvm/include/llvm/CodeGen/TailDuplicator.h b/llvm/include/llvm/CodeGen/TailDuplicator.h
index 94e8092..8fdce30 100644
--- a/llvm/include/llvm/CodeGen/TailDuplicator.h
+++ b/llvm/include/llvm/CodeGen/TailDuplicator.h
@@ -115,8 +115,7 @@ private:
   bool canCompletelyDuplicateBB(MachineBasicBlock &BB);
   bool duplicateSimpleBB(MachineBasicBlock *TailBB,
                          SmallVectorImpl<MachineBasicBlock *> &TDBBs,
-                         const DenseSet<Register> &RegsUsedByPhi,
-                         SmallVectorImpl<MachineInstr *> &Copies);
+                         const DenseSet<Register> &RegsUsedByPhi);
   bool tailDuplicate(bool IsSimple,
                      MachineBasicBlock *TailBB,
                      MachineBasicBlock *ForcedLayoutPred,
diff --git a/llvm/lib/CodeGen/TailDuplicator.cpp b/llvm/lib/CodeGen/TailDuplicator.cpp
index 18507b8..461971a 100644
--- a/llvm/lib/CodeGen/TailDuplicator.cpp
+++ b/llvm/lib/CodeGen/TailDuplicator.cpp
@@ -716,8 +716,7 @@ bool TailDuplicator::canCompletelyDuplicateBB(MachineBasicBlock &BB) {
 
 bool TailDuplicator::duplicateSimpleBB(
     MachineBasicBlock *TailBB, SmallVectorImpl<MachineBasicBlock *> &TDBBs,
-    const DenseSet<Register> &UsedByPhi,
-    SmallVectorImpl<MachineInstr *> &Copies) {
+    const DenseSet<Register> &UsedByPhi) {
   SmallPtrSet<MachineBasicBlock *, 8> Succs(TailBB->succ_begin(),
                                             TailBB->succ_end());
   SmallVector<MachineBasicBlock *, 8> Preds(TailBB->predecessors());
@@ -826,7 +825,7 @@ bool TailDuplicator::tailDuplicate(bool IsSimple, MachineBasicBlock *TailBB,
   getRegsUsedByPHIs(*TailBB, &UsedByPhi);
 
   if (IsSimple)
-    return duplicateSimpleBB(TailBB, TDBBs, UsedByPhi, Copies);
+    return duplicateSimpleBB(TailBB, TDBBs, UsedByPhi);
 
   // Iterate through all the unique predecessors and tail-duplicate this
   // block into them, if possible. Copying the list ahead of time also
-- 
2.7.4