From b8cd66b5d78eaeba41ab372aaca5180dd54e4385 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Wed, 25 Jul 2012 21:19:40 +0000
Subject: [PATCH] It's not safe to blindly remove invoke instructions. This
 happens when we encounter an invoke of an allocation function. This should
 fix the dragonegg bootstrap. Testcase to follow, later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160757 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/IPO/GlobalOpt.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 72623a36e50..6d950d20240 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -352,7 +352,8 @@ static bool IsSafeComputationToRemove(Value *V) {
       return true;
     if (!V->hasOneUse())
       return false;
-    if (isa<LoadInst>(V) || isa<Argument>(V) || isa<GlobalValue>(V))
+    if (isa<LoadInst>(V) || isa<InvokeInst>(V) || isa<Argument>(V) ||
+        isa<GlobalValue>(V))
       return false;
     if (isAllocationFn(V))
       return true;
-- 
2.34.1