From c84941be0af3a721183297ebb5e8511157a0c636 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Tue, 20 May 2008 20:59:51 +0000
Subject: [PATCH] Port the fix for the select operator from instcombine's
 ComputeNumSignBits to SelectionDAG's ComputeNumSignBits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51348 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 83e773ed313..c46271a2b76 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1690,9 +1690,9 @@ unsigned SelectionDAG::ComputeNumSignBits(SDOperand Op, unsigned Depth) const{
     return std::min(Tmp, Tmp2);
 
   case ISD::SELECT:
-    Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
+    Tmp = ComputeNumSignBits(Op.getOperand(1), Depth+1);
     if (Tmp == 1) return 1;  // Early out.
-    Tmp2 = ComputeNumSignBits(Op.getOperand(1), Depth+1);
+    Tmp2 = ComputeNumSignBits(Op.getOperand(2), Depth+1);
     return std::min(Tmp, Tmp2);
     
   case ISD::SETCC: