From: Dan Gohman <gohman@apple.com>
Date: Mon, 26 Jul 2010 23:40:24 +0000 (+0000)
Subject: Fix a use-after-free.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3eca15bdb5823d0f9ff5059a179a1759fee1a185;p=oota-llvm.git

Fix a use-after-free.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109468 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CriticalAntiDepBreaker.cpp b/lib/CodeGen/CriticalAntiDepBreaker.cpp
index cb15166cd4a..98d4d413201 100644
--- a/lib/CodeGen/CriticalAntiDepBreaker.cpp
+++ b/lib/CodeGen/CriticalAntiDepBreaker.cpp
@@ -41,8 +41,6 @@ CriticalAntiDepBreaker::~CriticalAntiDepBreaker() {
 }
 
 void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) {
-  Classes.clear();
-
   const unsigned BBSize = BB->size();
   for (unsigned i = 0, e = TRI->getNumRegs(); i != e; ++i) {
     // Clear out the register class data.