From 020decc2b4a193a22314e174808269a5ea430dfe Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Fri, 25 Jul 2008 21:35:43 +0000
Subject: [PATCH] In order to avoid reprocessing a register more than once, we
 need to add it to the handled set so it will get filtered out in future
 iterations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54065 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/StrongPHIElimination.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/CodeGen/StrongPHIElimination.cpp b/lib/CodeGen/StrongPHIElimination.cpp
index 9a9fba550b8..7f98463e48c 100644
--- a/lib/CodeGen/StrongPHIElimination.cpp
+++ b/lib/CodeGen/StrongPHIElimination.cpp
@@ -741,7 +741,7 @@ void StrongPHIElimination::ScheduleCopies(MachineBasicBlock* MBB,
   std::set<unsigned> RegHandled;
   for (SmallVector<std::pair<unsigned, MachineInstr*>, 4>::iterator I =
        InsertedPHIDests.begin(), E = InsertedPHIDests.end(); I != E; ++I)
-    if (!RegHandled.count(I->first))
+    if (!RegHandled.insert(I->first).second)
       LI.addLiveRangeToEndOfBlock(I->first, I->second);
 }