From d3af7cc9d903bf272e3c318e1c0cb40c3001714b Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Sat, 28 Nov 2015 21:43:12 +0000
Subject: [PATCH] [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
---
lib/Transforms/Utils/SimplifyLibCalls.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
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) {
--
2.34.1