From c262f7298f826347aee1519e20f5166b1d29e842 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 9 Jul 2001 19:38:52 +0000
Subject: [PATCH] Don't clean out the type plane of the constant pool... this
 is a hack.  FIXME

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/DCE.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/DCE.cpp b/lib/Transforms/Scalar/DCE.cpp
index fa2c9c72215..f1582d3346b 100644
--- a/lib/Transforms/Scalar/DCE.cpp
+++ b/lib/Transforms/Scalar/DCE.cpp
@@ -37,7 +37,12 @@ using namespace cfg;
 
 struct ConstPoolDCE { 
   enum { EndOffs = 0 };
-  static bool isDCEable(const Value *) { return true; } 
+  static bool isDCEable(const ConstPoolVal *CPV) {
+    // TODO: The bytecode writer requires that all used types are in the
+    // constant pool for the current method.  This is messy and is really
+    // irritating. FIXME
+    return CPV->getType() != Type::TypeTy;  // Don't DCE Type plane constants!
+  }
 };
 
 struct BasicBlockDCE {