From 5fd507d43194a3743799bb9453877d165148e61c Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Mon, 9 Jul 2007 23:57:18 +0000
Subject: [PATCH] Add an assertion if find_leader fails.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38477 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/GVNPRE.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Transforms/Scalar/GVNPRE.cpp b/lib/Transforms/Scalar/GVNPRE.cpp
index 73739c161a9..4a5dca94098 100644
--- a/lib/Transforms/Scalar/GVNPRE.cpp
+++ b/lib/Transforms/Scalar/GVNPRE.cpp
@@ -695,6 +695,7 @@ Value* GVNPRE::find_leader(ValueNumberedSet& vals, uint32_t v) {
     if (v == VN.lookup(*I))
       return *I;
   
+  assert(0 && "No leader found, but present bit is set?");
   return 0;
 }