From fba565d044a8979cfd916ce52655a6847bfaa601 Mon Sep 17 00:00:00 2001
From: Mike Stump <mrs@apple.com>
Date: Wed, 16 Dec 2009 03:07:12 +0000
Subject: [PATCH] Add an addition check for undefined behavior for when we hit
 a __builtin_unreachable.  WIP.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91499 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CGBuiltin.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index c70443245c..96bc3ef62c 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -229,6 +229,8 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
     return RValue::get(Builder.CreateCall(F));
   }
   case Builtin::BI__builtin_unreachable: {
+    if (CatchUndefined && HaveInsertPoint())
+      EmitBranch(getTrapBB());
     Value *V = Builder.CreateUnreachable();
     Builder.ClearInsertionPoint();
     return RValue::get(V);
-- 
2.50.1