From b60736ec1405bb0a8dd40989f67ef4c93da068ab Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Tue, 16 Feb 2021 21:13:02 +0100
Subject: Vendor import of llvm-project main 8e464dd76bef, the last commit
 before the upstream release/12.x branch was created.

---
 llvm/lib/Target/ARM/A15SDOptimizer.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'llvm/lib/Target/ARM/A15SDOptimizer.cpp')

diff --git a/llvm/lib/Target/ARM/A15SDOptimizer.cpp b/llvm/lib/Target/ARM/A15SDOptimizer.cpp
index f8a86a70c077..bb81233cf803 100644
--- a/llvm/lib/Target/ARM/A15SDOptimizer.cpp
+++ b/llvm/lib/Target/ARM/A15SDOptimizer.cpp
@@ -359,8 +359,7 @@ void A15SDOptimizer::elideCopiesAndPHIs(MachineInstr *MI,
    SmallVector<MachineInstr *, 8> Front;
    Front.push_back(MI);
    while (Front.size() != 0) {
-     MI = Front.back();
-     Front.pop_back();
+     MI = Front.pop_back_val();
 
      // If we have already explored this MachineInstr, ignore it.
      if (Reached.find(MI) != Reached.end())
-- 
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