commit 5a3eecdfd8e677396e381326182e310266a24ed1
author Dan Gohman <gohman@apple.com> Wed May 07 00:35:55 2008 +0000
committer Dan Gohman <gohman@apple.com> Wed May 07 00:35:55 2008 +0000
tree a0081dae5ef19cbdc849befbb3b2e469acf37a53
parent cab93d58c3b87e986a796a453064e7faa67d038e

Fix a bug in the ComputeMaskedBits logic for multiply.

llvm-svn: 50793

llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 3e75f7b..3d5a126 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1244,8 +1244,8 @@
     unsigned TrailZ = KnownZero.countTrailingOnes() +
                       KnownZero2.countTrailingOnes();
     unsigned LeadZ =  std::max(KnownZero.countLeadingOnes() +
-                               KnownZero2.countLeadingOnes() +
-                               1, BitWidth) - BitWidth;
+                               KnownZero2.countLeadingOnes(),
+                               BitWidth) - BitWidth;
 
     TrailZ = std::min(TrailZ, BitWidth);
     LeadZ = std::min(LeadZ, BitWidth);