From b85ffb689eab10ea63f24c5f489a92e2b49e44ae Mon Sep 17 00:00:00 2001
From: Mike Stump <mrs@apple.com>
Date: Wed, 16 Dec 2009 03:07:12 +0000
Subject: Add an addition check for undefined behavior for when we hit a
 __builtin_unreachable.  WIP.

llvm-svn: 91499
---
 clang/lib/CodeGen/CGBuiltin.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'clang/lib/CodeGen/CGBuiltin.cpp')

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index c70443245c7..96bc3ef62cb 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/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);
-- 
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