From d29ce1783cabce806d94d20ca27920e9c7093c62 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Wed, 30 Jan 2008 07:45:37 +0000
Subject: [PATCH] Don't DCE FreeInst's. We were using those! Patch from Owen
 Anderson.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46553 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/DeadStoreElimination.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp
index 7e2588ab77d..ba0d1bdf2bd 100644
--- a/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -420,7 +420,7 @@ bool DSE::handleEndBlock(BasicBlock& BB,
     } else {
       // For any non-memory-affecting non-terminators, DCE them as we reach them
       Instruction *CI = BBI;
-      if (!CI->isTerminator() && CI->getNumUses() == 0) {
+      if (!CI->isTerminator() && CI->getNumUses() == 0 && !isa<FreeInst>(CI)) {
         
         // DCE instructions only used to calculate that load
         for (Instruction::op_iterator OI = CI->op_begin(), OE = CI->op_end();