From 5fd2ab3518d4d37da7f91b23a03d36f7ed4880f9 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 23 Oct 2004 03:10:23 +0000
Subject: [PATCH] Fix a bug that Brian brought to my attention.  This corrects:
 Assembler/2004-10-22-BCWriterUndefBug.llx

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17177 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Bytecode/Writer/SlotCalculator.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Bytecode/Writer/SlotCalculator.cpp b/lib/Bytecode/Writer/SlotCalculator.cpp
index d4145dbcdca..0f298dcd003 100644
--- a/lib/Bytecode/Writer/SlotCalculator.cpp
+++ b/lib/Bytecode/Writer/SlotCalculator.cpp
@@ -150,7 +150,8 @@ void SlotCalculator::processModule() {
         TypePlane &Plane = Table[plane];
         unsigned FirstNonStringID = 0;
         for (unsigned i = 0, e = Plane.size(); i != e; ++i)
-          if (isa<ConstantAggregateZero>(Plane[i]) ||
+          if (isa<ConstantAggregateZero>(Plane[i]) || 
+	      isa<UndefValue>(Plane[i]) ||
               cast<ConstantArray>(Plane[i])->isString()) {
             // Check to see if we have to shuffle this string around.  If not,
             // don't do anything.