From: Craig Topper <craig.topper@gmail.com>
Date: Sun, 30 Apr 2017 07:44:55 +0000 (+0000)
Subject: [X86] Clear KnownBits instead of reconstructing it. NFC
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=78c3b9ec3d90dbae67666966a7636ac9a4d19818;p=llvm

[X86] Clear KnownBits instead of reconstructing it. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301767 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 535be01abc5..d767a7a7d2c 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -26682,7 +26682,7 @@ void X86TargetLowering::computeKnownBitsForTargetNode(const SDValue Op,
          "Should use MaskedValueIsZero if you don't know whether Op"
          " is a target node!");
 
-  Known = KnownBits(BitWidth);   // Don't know anything.
+  Known.Zero.clearAllBits(); Known.One.clearAllBits();
   switch (Opc) {
   default: break;
   case X86ISD::ADD: