From: Cameron Zwarich <zwarich@apple.com>
Date: Thu, 24 Mar 2011 15:54:11 +0000 (+0000)
Subject: It is enough for the CallInst to have no uses to be made a tail call with a ret
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=dc31cfeb74c46fe564a350ffd20880e61d04f286;p=oota-llvm.git

It is enough for the CallInst to have no uses to be made a tail call with a ret
void; it doesn't need to have a void type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128212 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index fc7e13675cb..337a4d3c468 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -644,7 +644,7 @@ bool CodeGenPrepare::DupRetToEnableTailCallOpts(ReturnInst *RI) {
       if (++RI == RE)
         continue;
       CallInst *CI = dyn_cast<CallInst>(&*RI);
-      if (CI && CI->getType()->isVoidTy() && TLI->mayBeEmittedAsTailCall(CI))
+      if (CI && CI->use_empty() && TLI->mayBeEmittedAsTailCall(CI))
         TailCalls.push_back(CI);
     }
   }