From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Sat, 28 Nov 2015 21:43:12 +0000 (+0000)
Subject: [SimplifyLibCalls] Fix inverted condition that lead to an uninitialized memory read... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=d3af7cc9d903bf272e3c318e1c0cb40c3001714b

[SimplifyLibCalls] Fix inverted condition that lead to an uninitialized memory read below.

Found by msan!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254238 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/SimplifyLibCalls.cpp b/lib/Transforms/Utils/SimplifyLibCalls.cpp
index 67e1697c7da..8389e39f7af 100644
--- a/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -1454,8 +1454,8 @@ LibCallSimplifier::classifyArgUse(Value *Val, BasicBlock *BB, bool IsFloat,
 
   Function *Callee = CI->getCalledFunction();
   LibFunc::Func Func;
-  if (Callee && (!TLI->getLibFunc(Callee->getName(), Func) || !TLI->has(Func) ||
-                 !isTrigLibCall(CI)))
+  if (!Callee || !TLI->getLibFunc(Callee->getName(), Func) || !TLI->has(Func) ||
+      !isTrigLibCall(CI))
     return;
 
   if (IsFloat) {