From: Dan Gohman <gohman@apple.com>
Date: Sun, 27 Sep 2009 16:10:30 +0000 (+0000)
Subject: Grab an LLVM Context from an instruction that exists rather than one
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f37cfed7911971e0326ed0b2de526bcc26c92950;p=oota-llvm.git

Grab an LLVM Context from an instruction that exists rather than one
that is deleted in some situations. This fixes a use-after-free.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82903 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LICM.cpp b/lib/Transforms/Scalar/LICM.cpp
index fe37ab4caa1..6df246fa80e 100644
--- a/lib/Transforms/Scalar/LICM.cpp
+++ b/lib/Transforms/Scalar/LICM.cpp
@@ -593,7 +593,7 @@ void LICM::sink(Instruction &I) {
     if (AI) {
       std::vector<AllocaInst*> Allocas;
       Allocas.push_back(AI);
-      PromoteMemToReg(Allocas, *DT, *DF, I.getContext(), CurAST);
+      PromoteMemToReg(Allocas, *DT, *DF, AI->getContext(), CurAST);
     }
   }
 }