From c8ecd22037d4e72ca8e3757c09095b830502cc5a Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 22 Nov 2003 02:13:08 +0000
Subject: [PATCH] Do not crash when deleing a region with a dead invoke
 instruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10161 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/ADCE.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Transforms/Scalar/ADCE.cpp b/lib/Transforms/Scalar/ADCE.cpp
index 4d7efd8ae4d..a06e746b0e0 100644
--- a/lib/Transforms/Scalar/ADCE.cpp
+++ b/lib/Transforms/Scalar/ADCE.cpp
@@ -430,6 +430,10 @@ bool ADCE::doADCE() {
         }
         
         // Delete the old terminator instruction...
+        const Type *TermTy = BB->getTerminator()->getType();
+        if (TermTy != Type::VoidTy)
+          BB->getTerminator()->replaceAllUsesWith(
+                               Constant::getNullValue(TermTy));
         BB->getInstList().pop_back();
         const Type *RetTy = Func->getReturnType();
         new ReturnInst(RetTy != Type::VoidTy ?