From 766824e844e84d40255dd3baa5c4d6d5d422a0a2 Mon Sep 17 00:00:00 2001 From: Vitaly Buka Date: Mon, 22 May 2017 21:33:54 +0000 Subject: [PATCH] [CodeGen] Fix uninitialized variables exposed by r303084 All other calls of analyzeBranch reset PredTBB and PredFBB, so I assume it's expected behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303581 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/TailDuplicator.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/CodeGen/TailDuplicator.cpp b/lib/CodeGen/TailDuplicator.cpp index d2414200e9d..d40f7af431a 100644 --- a/lib/CodeGen/TailDuplicator.cpp +++ b/lib/CodeGen/TailDuplicator.cpp @@ -749,7 +749,7 @@ bool TailDuplicator::canTailDuplicate(MachineBasicBlock *TailBB, if (PredBB->succ_size() > 1) return false; - MachineBasicBlock *PredTBB, *PredFBB; + MachineBasicBlock *PredTBB = nullptr, *PredFBB = nullptr; SmallVector PredCond; if (TII->analyzeBranch(*PredBB, PredTBB, PredFBB, PredCond)) return false; @@ -832,7 +832,7 @@ bool TailDuplicator::tailDuplicate(bool IsSimple, MachineBasicBlock *TailBB, appendCopies(PredBB, CopyInfos, Copies); // Simplify - MachineBasicBlock *PredTBB, *PredFBB; + MachineBasicBlock *PredTBB = nullptr, *PredFBB = nullptr; SmallVector PredCond; TII->analyzeBranch(*PredBB, PredTBB, PredFBB, PredCond); -- 2.11.0