From b9128445547544408b483e19a6da67b5e2dd4de6 Mon Sep 17 00:00:00 2001
From: Zhou Sheng <zhousheng00@gmail.com>
Date: Wed, 14 Mar 2007 03:21:24 +0000
Subject: [PATCH] Enable KnownZero/One.clear().

llvm-svn: 35093
---
 llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
index 93dde275b6cd..e072d966a7b3 100644
--- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -1598,8 +1598,8 @@ bool InstCombiner::SimplifyDemandedBits(Value *V, APInt DemandedMask,
     return false;
   }
   
-  //KnownZero.clear(); 
-  //KnownOne.clear();
+  KnownZero.clear(); 
+  KnownOne.clear();
   if (!V->hasOneUse()) {    // Other users may use these bits.
     if (Depth != 0) {       // Not at the root.
       // Just compute the KnownZero/KnownOne bits to simplify things downstream.