commit 3cf92802148655027d277940eafb1f38d4d6b1fb
author Cameron Zwarich <zwarich@apple.com> Thu Feb 24 10:00:20 2011 +0000
committer Cameron Zwarich <zwarich@apple.com> Thu Feb 24 10:00:20 2011 +0000
tree a13a69800ee4f3ccaf75082c850ae5c86e238655
parent 97eb52da7b25467014e1bb99a82a2fb515461b37

Add a getNumSignBits() method to APInt.

llvm-svn: 126379

llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 2fb2f2d..0b7cbcc 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2088,12 +2088,7 @@
 
   case ISD::Constant: {
     const APInt &Val = cast<ConstantSDNode>(Op)->getAPIntValue();
-    // If negative, return # leading ones.
-    if (Val.isNegative())
-      return Val.countLeadingOnes();
-
-    // Return # leading zeros.
-    return Val.countLeadingZeros();
+    return Val.getNumSignBits();
   }
 
   case ISD::SIGN_EXTEND: