From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 17 Jul 2012 07:47:50 +0000 (+0000)
Subject: Make sure constant bitwidth is <= 64 bit before calling getSExtValue().
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b4d4959fdda7afdf7994d3cb0b20c052ad0c7895;p=oota-llvm.git

Make sure constant bitwidth is <= 64 bit before calling getSExtValue().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160350 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 9902ed76fa7..d439a6f8699 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -2323,7 +2323,8 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,
         }
       }
 
-    if (!isLegalICmpImmediate(C1.getSExtValue())) {
+    if (C1.getMinSignedBits() <= 64 &&
+        !isLegalICmpImmediate(C1.getSExtValue())) {
       // (X & -256) == 256 -> (X >> 8) == 1
       if ((Cond == ISD::SETEQ || Cond == ISD::SETNE) &&
           N0.getOpcode() == ISD::AND && N0.hasOneUse()) {