From 1430ef134d36888b99d2e6fedd2b025882593538 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 6 May 2005 06:46:58 +0000
Subject: preserve the tail marker

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21734 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/IPO/DeadArgumentElimination.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'lib/Transforms/IPO/DeadArgumentElimination.cpp')

diff --git a/lib/Transforms/IPO/DeadArgumentElimination.cpp b/lib/Transforms/IPO/DeadArgumentElimination.cpp
index 3a2a5f08a8..2dbc5c3169 100644
--- a/lib/Transforms/IPO/DeadArgumentElimination.cpp
+++ b/lib/Transforms/IPO/DeadArgumentElimination.cpp
@@ -430,6 +430,8 @@ void DAE::RemoveDeadArgumentsFromFunction(Function *F) {
                            Args, "", Call);
     } else {
       New = new CallInst(NF, Args, "", Call);
+      if (cast<CallInst>(Call)->isTailCall())
+        cast<CallInst>(New)->setTailCall();
     }
     Args.clear();
 
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